/* 
  PLE-CC2 OSPE Practice System — Design System v2.0 (Test Sandbox)
  File: style.css
  =============================================================
  App Shell theme matching PLE CC Quiz & Flashcard design language.
  Warm cream palette, Bai Jamjuree + IBM Plex Mono, adaptive wide layout.
  No dark mode. Single unified warm light theme.
*/

@import url('https://fonts.googleapis.com/css2?family=Bai+Jamjuree:wght@300;400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600;700&display=swap');

/* ══════════════════════════════════════════════════════════════
   DESIGN TOKENS — v2.0 (matches Quiz & Flashcard Palette)
   ══════════════════════════════════════════════════════════════ */
:root {
  /* ── Background & Surfaces ── */
  --bg: #F6F5F1;
  --bg-primary: #F6F5F1;
  --bg-secondary: #ECEAE4;
  --surface: #FFFFFF;
  --card: #FFFFFF;
  --border: #E4E2DA;
  --border-dark: #D0CCC2;

  /* ── Typography & Ink ── */
  --ink: #1C2320;
  --ink-soft: #555C54;
  --ink-faint: #475569;
  --text-primary: #1C2320;
  --text-secondary: #555C54;
  --text-muted: #475569;

  /* ── Primary / Accent ── */
  --accent: #0E7490;
  --accent-soft: #ECFEFF;
  --accent-hover: #0891B2;
  --accent-glow: rgba(14, 116, 144, 0.16);
  --primary: #0E7490;
  --primary-hover: #0891B2;
  --primary-light: #ECFEFF;

  /* ── Categories ── */
  --clinic: #0891B2;
  --clinic-soft: #ECFEFF;
  --clinic-light: #ECFEFF;
  --clinic-border: #A5F3FC;

  --product: #7C3AED;
  --product-soft: #F3E8FF;
  --product-light: #F3E8FF;
  --product-border: #DDD6FE;

  --sap: #D97706;
  --sap-soft: #FEF3C7;
  --sap-light: #FEF3C7;
  --sap-border: #FDE68A;

  --all-track: #4F46E5;
  --all-soft: #EEF2FF;
  --all-border: #C7D2FE;

  /* ── Status ── */
  --success: #16A34A;
  --success-soft: #DCFCE7;
  --success-border: #86EFAC;
  --warning: #D97706;
  --danger: #DC2626;
  --danger-soft: #FEE2E2;
  --danger-border: #FECACA;

  /* ── Shadows & Radius ── */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.02);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.07);
  --shadow-lg: 0 20px 48px rgba(0,0,0,0.10);
  --shadow-glow: 0 0 20px rgba(14, 116, 144, 0.15);

  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  --radius: 12px;

  --transition: all 0.25s cubic-bezier(0.2, 0.9, 0.3, 1);

  --font-title: 'Bai Jamjuree', sans-serif;
  --font-body: 'Bai Jamjuree', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
}

/* --- Base resets & general styles --- */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  min-height: 100dvh;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: flex-start;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-title);
  font-weight: 700;
  letter-spacing: -0.02em;
}

a {
  color: inherit;
  text-decoration: none;
}

/* ══════════════════════════════════════════════════════════════
   APP SHELL — Modern Fluid Full-Bleed Layout
   ══════════════════════════════════════════════════════════════ */
.app-shell {
  width: 100%;
  max-width: 100%;
  background: var(--bg);
  border: none;
  border-radius: 0;
  box-shadow: none;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  overflow: visible;
  position: relative;
}

.shell-index,
.shell-library,
.shell-viewer,
.shell-sim {
  max-width: 100%;
}

/* Fullscreen Mode */
:fullscreen .app-shell,
:-webkit-full-screen .app-shell,
body.is-fullscreen .app-shell {
  max-width: 100% !important;
  width: 100% !important;
  border-radius: 0 !important;
  border: none !important;
  box-shadow: none !important;
  min-height: 100vh !important;
  margin: 0 !important;
}

:fullscreen body,
:-webkit-full-screen body,
body.is-fullscreen {
  padding: 0 !important;
  background: var(--bg) !important;
}

.phone-notch {
  display: none !important;
}

/* Responsive container defaults */
@media (max-width: 860px) {
  html, body {
    padding: 0 !important;
    margin: 0 !important;
    background: var(--bg) !important;
    overflow-x: clip !important;
    width: 100% !important;
  }
  .app-shell, .page-viewport {
    overflow-x: clip !important;
  }
}

.page-viewport {
  flex: 1;
  overflow-y: visible;
  display: flex;
  flex-direction: column;
}

/* --- Global Layout Wrapper --- */
.container {
  width: 100%;
  max-width: 100%;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ══════════════════════════════════════════════════════════════
   TOPBAR NAVIGATION — replaces old navbar
   ══════════════════════════════════════════════════════════════ */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 18px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  min-height: 56px;
}
.topbar-left { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.topbar-right { display: flex; align-items: center; gap: 6px; flex-shrink: 0; }
.topbar .titles {
  flex: 1;
  text-align: center;
  min-width: 0;
  padding: 0 8px;
  overflow: hidden;
}
.topbar .app-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.25;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.topbar .app-sub {
  font-size: 11.5px;
  color: var(--ink-faint);
  font-weight: 500;
  margin-top: 1px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* App Logo in Topbar */
.topbar-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}
.topbar-logo-badge {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}
.topbar-logo-text {
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
  white-space: nowrap;
}

/* Nav Action Buttons in Topbar */
.icon-btn {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--ink);
  cursor: pointer;
  font-family: inherit;
  font-size: 14px;
  transition: var(--transition);
  flex-shrink: 0;
  text-decoration: none;
}
.icon-btn:hover {
  background: var(--clinic-soft);
  border-color: var(--clinic);
  color: var(--clinic);
  transform: translateY(-1px);
}
.icon-btn.active {
  background: var(--clinic);
  color: #fff;
  border-color: var(--clinic);
}

/* Back Button in Topbar */
.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--ink);
  font-family: inherit;
  font-size: 12.5px;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
}
.back-btn:hover {
  background: var(--clinic-soft);
  color: var(--clinic);
  border-color: var(--clinic);
  transform: translateY(-1px);
}

/* Topbar Navigation Tabs (Homepage) */
.topbar-nav-tabs {
  display: flex;
  gap: 4px;
}
.topbar-nav-tab {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 14px;
  border-radius: 10px;
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-soft);
  text-decoration: none;
  background: transparent;
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition);
}
.topbar-nav-tab:hover {
  background: var(--bg);
  color: var(--ink);
  border-color: var(--border);
}
.topbar-nav-tab.active {
  background: var(--clinic-soft);
  color: var(--clinic);
  border-color: var(--clinic-border);
  font-weight: 700;
}

/* Legacy Navbar Fallback */
.navbar { display: none !important; }
.theme-toggle-btn { display: none !important; }

/* ══════════════════════════════════════════════════════════════
   HERO SECTION — Modern Warm Teal Gradient
   ══════════════════════════════════════════════════════════════ */
.hero {
  background: linear-gradient(160deg, #093746 0%, #0E7490 55%, #0891B2 100%);
  padding: 2.75rem 1.5rem 2.25rem;
  text-align: center;
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
}
.hero::before {
  content: '';
  position: absolute;
  top: -50px;
  left: 50%;
  transform: translateX(-50%);
  width: 700px;
  height: 350px;
  background: radial-gradient(ellipse at center, rgba(255,255,255,0.12) 0%, transparent 70%);
  pointer-events: none;
}
.hero .container {
  position: relative;
  z-index: 1;
  max-width: 960px;
  margin: 0 auto;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.25);
  color: rgba(255,255,255,0.92);
  padding: 0.35rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 700;
  font-family: var(--font-title);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}

.hero-title {
  font-size: clamp(1.8rem, 4vw, 2.75rem);
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 0.85rem;
  font-family: var(--font-title);
  line-height: 1.2;
  letter-spacing: -0.025em;
}

.hero-subtitle {
  font-size: 1rem;
  color: rgba(255,255,255,0.8);
  max-width: 620px;
  margin: 0 auto 2rem auto;
  font-weight: 400;
  line-height: 1.65;
}

.hero-cta {
  display: flex;
  gap: 0.85rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* Section typography helpers */
.section-heading {
  text-align: center;
  font-size: 1.45rem;
  margin-bottom: 0.5rem;
  font-family: var(--font-title);
  color: var(--ink);
  letter-spacing: -0.02em;
}
.section-lead {
  text-align: center;
  color: var(--ink-soft);
  max-width: 580px;
  margin: 0 auto 2rem auto;
  line-height: 1.6;
  font-size: 0.92rem;
}

/* Stat Cards (Inside Hero) */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 0.85rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.22);
  border-radius: var(--radius-lg);
  padding: 1.15rem 0.85rem;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(8px);
}
.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}
.stat-card.clinic-stat::before  { background: #67e8f9; }
.stat-card.product-stat::before { background: #c4b5fd; }
.stat-card.sap-stat::before     { background: #fcd34d; }
.stat-card.total-stat::before   { background: #ffffff; }

.stat-card:hover {
  transform: translateY(-3px);
  background: rgba(255,255,255,0.18);
}

.stat-num {
  font-family: var(--font-mono);
  font-size: 2.35rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 0.35rem;
}
.stat-label {
  font-family: var(--font-title);
  color: rgba(255,255,255,0.7);
  font-size: 0.76rem;
  font-weight: 600;
  text-align: center;
  line-height: 1.35;
}
.stat-card.clinic-stat .stat-num  { color: #67e8f9; }
.stat-card.product-stat .stat-num { color: #c4b5fd; }
.stat-card.sap-stat .stat-num     { color: #fcd34d; }
.stat-card.total-stat .stat-num   { color: #ffffff; }

/* Buttons & Navigation */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-title);
  font-weight: 600;
  font-size: 1rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  border: none;
}

.btn:active,
.icon-btn:active,
.role-btn:active,
.btn-filter-action:active,
.cinematic-search-btn:active {
  transform: scale(0.97) translateY(0);
  filter: brightness(0.92);
}

.btn:focus-visible,
.icon-btn:focus-visible,
.role-btn:focus-visible,
.topbar-nav-tab:focus-visible,
.case-card:focus-visible,
.checklist-item:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.btn-primary {
  background-color: var(--primary);
  color: white;
  box-shadow: 0 4px 14px 0 rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px 0 rgba(99, 102, 241, 0.4);
}

.btn-secondary {
  background-color: var(--surface);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background-color: var(--bg-secondary);
  transform: translateY(-2px);
}

.btn-clinic {
  background-color: var(--clinic);
  color: white;
}
.btn-clinic:hover { background-color: #0891b2; }

.btn-product {
  background-color: var(--product);
  color: white;
}
.btn-product:hover { background-color: #7c3aed; }

.btn-sap {
  background-color: var(--sap);
  color: white;
}
.btn-sap:hover { background-color: #d97706; }

.btn-danger {
  background-color: var(--danger);
  color: white;
}
.btn-danger:hover { background-color: #dc2626; }

/* ══════════════════════════════════════════════════
   INTERACTIVE HOVER BUTTON (Magic UI / Modern Aesthetic)
   ══════════════════════════════════════════════════ */
.btn-interactive-hover {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border-radius: 9999px;
  border: 1.5px solid var(--border);
  background-color: var(--surface);
  color: var(--text-primary);
  padding: 0.75rem 1.75rem;
  font-family: var(--font-title);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1), transform 0.2s ease;
  text-decoration: none;
  user-select: none;
}

.btn-interactive-hover:hover {
  border-color: var(--primary);
  box-shadow: 0 10px 25px -5px rgba(26, 115, 232, 0.25);
  transform: translateY(-2px);
}

.btn-interactive-hover .btn-text-default {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transform: translateX(0);
  opacity: 1;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 2;
}

.btn-interactive-hover:hover .btn-text-default {
  transform: translateX(2.5rem);
  opacity: 0;
}

.btn-interactive-hover .btn-text-hover {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  color: #ffffff !important;
  opacity: 0;
  transform: translateX(2rem);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-interactive-hover:hover .btn-text-hover {
  transform: translateX(0);
  opacity: 1;
}

.btn-interactive-hover .btn-bubble-dot {
  position: absolute;
  left: 18px;
  top: 50%;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--primary);
  transform: translateY(-50%) scale(1);
  transition: all 0.45s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 1;
}

.btn-interactive-hover:hover .btn-bubble-dot {
  left: 50%;
  top: 50%;
  width: 120%;
  height: 250%;
  border-radius: 9999px;
  transform: translate(-50%, -50%) scale(1.5);
  background-color: var(--primary);
}

/* Primary Accent Variant */
.btn-interactive-hover.btn-variant-primary {
  border-color: var(--primary);
  background-color: var(--surface);
  color: var(--primary);
}
.btn-interactive-hover.btn-variant-primary .btn-bubble-dot {
  background-color: var(--primary);
}

/* Clinic Accent Variant */
.btn-interactive-hover.btn-variant-clinic {
  border-color: var(--clinic);
  color: var(--clinic);
}
.btn-interactive-hover.btn-variant-clinic .btn-bubble-dot {
  background-color: var(--clinic);
}

/* Product Accent Variant */
.btn-interactive-hover.btn-variant-product {
  border-color: var(--product);
  color: var(--product);
}
.btn-interactive-hover.btn-variant-product .btn-bubble-dot {
  background-color: var(--product);
}

/* Dark Mode Adaptation */
[data-theme="dark"] .btn-interactive-hover {
  background-color: var(--surface);
  border-color: var(--border);
  color: var(--text-primary);
}
[data-theme="dark"] .btn-interactive-hover:hover {
  border-color: var(--primary-light, var(--primary));
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.5);
}

.btn:disabled {
  background-color: var(--border);
  color: var(--text-muted);
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

/* --- Main Grid / Sections --- */
.main-section {
  padding: 4rem 0;
  flex: 1;
}

.grid-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

/* Category Cards — vibrant header band design */
.card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s cubic-bezier(0.4,0,0.2,1),
              box-shadow 0.25s cubic-bezier(0.4,0,0.2,1);
  display: flex;
  flex-direction: column;
  overflow: hidden; /* clip the colored header */
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

/* Colored header band per category */
.card-header-band {
  padding: 1.5rem 1.5rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.card-clinic  .card-header-band { background: linear-gradient(135deg, #0e7490 0%, #06b6d4 100%); }
.card-product .card-header-band { background: linear-gradient(135deg, #6d28d9 0%, #8b5cf6 100%); }
.card-sap     .card-header-band { background: linear-gradient(135deg, #b45309 0%, #f59e0b 100%); }

.card-icon {
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  background: rgba(255,255,255,0.2);
  flex-shrink: 0;
}

.card-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: white;
  font-family: var(--font-title);
  line-height: 1.3;
  margin: 0;
}

.card-body {
  padding: 1.25rem 1.5rem 1.5rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.card-desc {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 1.25rem;
  flex-grow: 1;
  line-height: 1.65;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-family: var(--font-title);
}

.badge-clinic { background-color: var(--clinic-light); color: #0e7490; font-weight: 700; border: 1px solid var(--clinic-border); }
.badge-product { background-color: var(--product-light); color: #6d28d9; font-weight: 700; border: 1px solid var(--product-border); }
.badge-sap { background-color: var(--sap-light); color: #78350f; font-weight: 700; border: 1px solid var(--sap-border); }

/* --- Library / Filter Styles --- */
.filter-bar {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin-bottom: 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  box-shadow: var(--shadow-sm);
}

.search-input-wrapper {
  flex: 1;
  min-width: 250px;
  position: relative;
}

.search-input {
  width: 100%;
  padding: 0.75rem 1rem 0.75rem 2.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 0.95rem;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  transition: var(--transition);
}

.search-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.search-icon-svg {
  position: absolute;
  left: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}

.filter-selects {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.select-filter {
  padding: 0.75rem 2rem 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-family: var(--font-title);
  font-size: 0.95rem;
  background-color: var(--surface);
  color: var(--text-primary);
  cursor: pointer;
  min-width: 160px;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%23475569'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 1rem;
}

/* Category Tabs */
.tabs-wrapper {
  display: flex;
  gap: 0.5rem;
}

.tab-btn {
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  font-family: var(--font-title);
  font-weight: 600;
  cursor: pointer;
  background-color: transparent;
  color: var(--text-secondary);
  transition: var(--transition);
}

.tab-btn:hover {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
}

.tab-btn.active {
  background-color: var(--primary);
  color: white;
}

/* Case list cards grid */
.case-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.case-card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  cursor: pointer;
}

.case-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md), var(--shadow-glow);
}

.case-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}

.case-card-id {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.case-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  font-family: var(--font-title);
}

.case-card-meta {
  margin-top: auto;
  border-top: 1px solid var(--border);
  padding-top: 0.75rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.difficulty-stars {
  color: var(--sap);
}

.case-card-tag {
  background-color: var(--bg-secondary);
  border-radius: var(--radius-sm);
  padding: 0.2rem 0.5rem;
  font-size: 0.75rem;
  font-weight: 500;
  font-family: var(--font-title);
}

/* --- Viewer / Continuous Single-Column Layout (แนวเดียวกันตลอด) --- */
.viewer-grid {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  width: 100%;
}

.viewer-pane {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem 2rem;
  box-shadow: var(--shadow-sm);
  min-height: auto;
  width: 100%;
}

.viewer-header {
  border-bottom: 1px solid var(--border);
  padding-bottom: 1.5rem;
  margin-bottom: 1.5rem;
}

.viewer-title {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.viewer-meta-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.viewer-section-title {
  font-size: 1.25rem;
  margin-bottom: 1rem;
  border-left: 4px solid var(--primary);
  padding-left: 0.75rem;
  color: var(--text-primary);
  margin-top: 1.5rem;
}

/* Patient info Table styling */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  margin-bottom: 1.5rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
}

.table-patient-info {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.table-patient-info th, 
.table-patient-info td {
  padding: 0.75rem 1rem;
  font-size: 0.95rem;
  word-break: normal !important;
  overflow-wrap: break-word !important;
  vertical-align: top;
}

.table-patient-info th p,
.table-patient-info td p {
  display: block !important;
  clear: both !important;
  margin: 0.4rem 0 !important;
  line-height: 1.5 !important;
  white-space: pre-wrap !important;
}

.table-patient-info th p:first-child,
.table-patient-info td p:first-child {
  margin-top: 0 !important;
}

.table-patient-info th p:last-child,
.table-patient-info td p:last-child {
  margin-bottom: 0 !important;
}

.table-patient-info th {
  background-color: var(--bg-secondary);
  font-weight: 600;
  font-family: var(--font-title);
  border-bottom: 1px solid var(--border);
}

.table-patient-info tr:not(:last-child) {
  border-bottom: 1px solid var(--border);
}

.table-patient-info tr > td:first-child:nth-last-child(2),
.table-patient-info tr > th:first-child:nth-last-child(2) {
  font-weight: 600;
  width: 30%;
  color: var(--text-secondary);
}

.table-patient-info th:nth-child(1),
.table-patient-info td:nth-child(1) {
  min-width: 120px;
  white-space: nowrap;
}

.table-patient-info th:nth-child(2),
.table-patient-info td:nth-child(2) {
  min-width: 60px;
}

#case-patient-content,
#exam-patient-content,
.case-content-body,
.table-patient-info {
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

/* Scenario, Patient, Equipment & Exam Lists (Universal Bullet & Numbered Support) */
/* Scenario, Patient, Equipment & Exam Lists (Universal Bullet & Numbered Support) */
ul.bullet-list,
#case-scenario-content ul,
#case-patient-content ul,
#case-equipment-content ul,
#note-content-area ul,
#exam-scenario-content ul,
#exam-patient-content ul,
#exam-equipment-content ul,
#exam-note-content-area ul,
.print-section-content ul {
  list-style-type: disc !important;
  padding-left: 1.35rem !important;
  margin: 0.25rem 0 !important;
  white-space: normal !important;
}

ol.ordered-list,
#case-scenario-content ol,
#case-patient-content ol,
#case-equipment-content ol,
#note-content-area ol,
#exam-scenario-content ol,
#exam-patient-content ol,
#exam-equipment-content ol,
#exam-note-content-area ol,
.print-section-content ol {
  list-style-type: decimal !important;
  padding-left: 1.35rem !important;
  margin: 0.25rem 0 !important;
  white-space: normal !important;
}

/* Nested lists */
ul.bullet-list ul,
#case-scenario-content ul ul,
#case-patient-content ul ul,
#case-equipment-content ul ul,
#exam-scenario-content ul ul,
#exam-patient-content ul ul,
#exam-equipment-content ul ul,
.print-section-content ul ul {
  list-style-type: circle !important;
  margin: 0.15rem 0 0.15rem 0 !important;
  padding-left: 1.25rem !important;
  white-space: normal !important;
}

ul.bullet-list ol,
ol.ordered-list ol,
#case-scenario-content ul ol,
#case-patient-content ul ol,
#case-equipment-content ul ol,
#exam-scenario-content ul ol,
#exam-patient-content ul ol,
#exam-equipment-content ul ol,
.print-section-content ul ol {
  list-style-type: decimal !important;
  margin: 0.15rem 0 0.15rem 0 !important;
  padding-left: 1.25rem !important;
  white-space: normal !important;
}

ul.bullet-list li,
ol.ordered-list li,
#case-scenario-content li,
#case-patient-content li,
#case-equipment-content li,
#note-content-area li,
#exam-scenario-content li,
#exam-patient-content li,
#exam-equipment-content li,
#exam-note-content-area li,
.print-section-content li {
  margin-bottom: 0.15rem !important;
  line-height: 1.45 !important;
  white-space: normal !important;
}

/* Checklist Styling */
.checklist-container {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.checklist-group-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 0.5rem;
  border-bottom: 1px dashed var(--border);
  padding-bottom: 0.25rem;
}

.checklist-item {
  display: flex;
  min-height: 44px;
  gap: 0.75rem;
  align-items: flex-start;
  padding: 0.75rem 1rem;
  margin-bottom: 0.65rem;
  background-color: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
}

.checklist-item:hover {
  border-color: var(--primary);
  background-color: var(--surface);
}

.checklist-item.checked {
  background-color: rgba(16, 185, 129, 0.08);
  border-color: var(--success);
}

.checkbox-custom {
  width: 1.35rem;
  height: 1.35rem;
  border-radius: var(--radius-sm);
  border: 2px solid var(--text-muted);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.checklist-item.checked .checkbox-custom {
  background-color: var(--success);
  border-color: var(--success);
  color: white;
}

.checkbox-custom::after {
  content: "✓";
  font-size: 0.9rem;
  font-weight: 700;
  opacity: 0;
  transition: var(--transition);
}

.checklist-item.checked .checkbox-custom::after {
  opacity: 1;
}

.checklist-item-score {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--primary);
  background-color: var(--bg-secondary);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  flex-shrink: 0;
  white-space: nowrap;
}

.checklist-item-score.zero-score {
  color: #ef4444;
  background-color: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.25);
}

.checklist-item-text {
  font-size: 0.95rem;
}

.checklist-item.checked .checklist-item-text {
  text-decoration: line-through;
  color: var(--text-secondary);
}

/* Subset / Nested Checklist Items */
.checklist-item.is-subset {
  margin-left: 1.75rem;
  border-left: 3px solid var(--primary-light, #94a3b8);
  background-color: var(--surface);
  font-size: 0.9rem;
}

.checklist-item.is-subset:hover {
  border-left-color: var(--primary);
  background-color: var(--bg-primary);
}

/* Rubric Single-Choice Tier (Radio Style) */
.checklist-item.is-subset.is-rubric .checkbox-custom {
  border-radius: 50% !important;
}

.checklist-item.is-subset.is-rubric.checked .checkbox-custom {
  background-color: #3b82f6 !important;
  border-color: #3b82f6 !important;
}

.checklist-item.is-subset.is-rubric.checked .checkbox-custom::after {
  content: "●" !important;
  font-size: 0.72rem !important;
  font-weight: 900 !important;
  line-height: 1;
}

/* Additive Multi-Choice (Checkbox Style) */
.checklist-item.is-subset.is-additive .checkbox-custom {
  border-radius: var(--radius-sm) !important;
}

.checklist-item.is-subset.is-additive.checked .checkbox-custom {
  background-color: var(--success) !important;
  border-color: var(--success) !important;
}

.checklist-item.is-subset.is-additive.checked .checkbox-custom::after {
  content: "✓" !important;
  font-size: 0.9rem !important;
  font-weight: 700 !important;
}

/* Descriptive Sub-details (Nested Bullets within Checklist Items) */
.checklist-sub-details {
  margin: 0.4rem 0 0.1rem 1.25rem !important;
  padding: 0 !important;
  list-style-type: disc !important;
  font-size: 0.88rem !important;
  color: var(--text-secondary) !important;
  line-height: 1.5 !important;
}

.checklist-sub-details li {
  margin-bottom: 0.25rem !important;
}

.checklist-item.checked .checklist-sub-details {
  color: var(--text-muted) !important;
}

/* Progress area */
.progress-card {
  background-color: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  border: 1px solid var(--border);
}

.progress-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.75rem;
  font-weight: 700;
  font-family: var(--font-title);
}

.progress-bar-bg {
  width: 100%;
  height: 10px;
  background-color: var(--border);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  width: 0%;
  background-color: var(--danger);
  border-radius: var(--radius-full);
  transition: width 0.3s ease;
}

.progress-bar-fill.pass {
  background-color: var(--success);
}

/* Note/Answer Toggle */
.note-container {
  margin-top: 1.5rem;
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
}

.note-content {
  background-color: var(--bg-secondary);
  border-left: 4px solid var(--sap);
  padding: 1.5rem;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin-top: 1rem;
}

/* Content Spacing & Tab-Stop Alignment (Google Docs 100% Alignment & Spacing) */
#case-scenario-content,
#case-patient-content,
#case-equipment-content,
#note-content-area,
#exam-scenario-content,
#exam-patient-content,
#exam-equipment-content,
.note-content,
.exam-note-content-area,
.viewer-card-body,
.case-content-body {
  white-space: pre-wrap;
  tab-size: 10;
  -moz-tab-size: 10;
  word-break: break-word;
}

#case-scenario-content p,
#case-patient-content p,
#case-equipment-content p,
#note-content-area p,
#exam-scenario-content p,
#exam-patient-content p,
#exam-equipment-content p,
.note-content p,
.exam-note-content-area p {
  white-space: pre-wrap;
  tab-size: 10;
  -moz-tab-size: 10;
  margin-top: 0.2rem;
  margin-bottom: 0.2rem;
  line-height: 1.55;
}

/* --- Exam Simulation Mode --- */
.setup-panel {
  max-width: 1120px;
  width: 100%;
  margin: 1.5rem auto;
  padding: 2rem 2.5rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-family: var(--font-title);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.form-input-number {
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  width: 100%;
  font-family: var(--font-mono);
  background-color: var(--surface);
  color: var(--text-primary);
}

.slider-group {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  background-color: var(--bg-secondary);
  padding: 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
}

.slider-row {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.slider-row span {
  font-family: var(--font-title);
  font-weight: 600;
  width: 80px;
}

.slider-row input[type="range"] {
  flex: 1;
  accent-color: var(--primary);
}

.slider-val {
  width: 30px;
  font-family: var(--font-mono);
  font-weight: 700;
  text-align: right;
}

/* Exam Running Layout */
.exam-layout {
  display: block;
  width: 100%;
  height: auto;
  overflow: visible;
}

@media (max-width: 900px) {
  .exam-layout {
    grid-template-columns: 1fr;
    height: auto;
    overflow: visible;
  }
}

.exam-content-pane {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  overflow-y: visible;
  height: auto;
  width: 100%;
}

.exam-sidebar-pane {
  display: none;
}

/* Timer styles */
.timer-card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.timer-display {
  font-family: var(--font-mono);
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--success);
  margin-bottom: 0.5rem;
  letter-spacing: -0.05em;
  transition: color 0.3s ease;
}

.timer-display.warn { color: var(--warning); }
.timer-display.danger { color: var(--danger); animation: pulse 1s infinite; }

.timer-controls {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
}

@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.03); }
  100% { transform: scale(1); }
}

/* ---------- Control Tab Redesign ---------- */
.control-tab {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: visible;
}

.tab-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 14px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-secondary);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.control-tab .tabs {
  display: flex;
  gap: 4px;
  background: var(--bg-primary);
  padding: 3px;
  border-radius: var(--radius-md);
}

.control-tab .tab {
  border: none;
  background: transparent;
  cursor: pointer;
  font-family: inherit;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 5px 12px;
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
}

.control-tab .tab.active {
  background: var(--surface);
  color: var(--text-primary);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.station-indicator {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
}

.station-indicator span {
  color: var(--primary);
  font-weight: 700;
}

.tab-panel {
  padding: 10px 14px;
}

.tab-panel.hidden {
  display: none !important;
}

/* Timer row & Fuse Bar ("ชนวนระเบิด") */
.exam-sticky-timer-bar {
  position: -webkit-sticky;
  position: sticky;
  top: 0 !important;
  z-index: 1000;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 8px 14px;
  padding-top: max(8px, env(safe-area-inset-top, 0px));
  margin-bottom: 0.75rem;
  box-shadow: var(--shadow-md);
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.exam-sticky-top-header {
  background: var(--bg);
  margin-bottom: 1.25rem;
}

.timer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin: 0;
}

.timer-fuse-col {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
  min-width: 260px;
}

.timer-readout-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.timer-action-btns {
  display: flex;
  align-items: center;
  gap: 6px;
}

.timer-fuse-track {
  width: 100%;
  height: 6px;
  background: var(--bg-secondary);
  border-radius: 4px;
  overflow: hidden;
  margin-top: 2px;
  position: relative;
}

.timer-fuse-track #timer-fuse-fill,
.timer-fuse-fill {
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, #6366f1, #8b5cf6, #3b82f6, #06b6d4);
  border-radius: 4px;
  transition: width 0.3s linear, background 0.4s ease;
  box-shadow: 0 0 6px rgba(99, 102, 241, 0.4);
}

.timer-readout {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.timer-readout #exam-timer {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1;
  color: var(--primary);
  transition: color 0.3s ease;
}

.timer-readout small {
  font-size: 11.5px;
  color: var(--text-secondary);
}

.score-chip {
  display: flex;
  align-items: baseline;
  gap: 6px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 6px 12px;
  font-size: 12px;
  color: var(--text-secondary);
}

.score-chip strong {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text-primary);
  font-weight: 700;
}

.score-chip em {
  font-style: normal;
  color: var(--success);
  font-weight: 700;
  background: var(--primary-light);
  padding: 1px 5px;
  border-radius: 4px;
}

/* Blister rail */
.rail-wrap {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 14px;
}

.rail {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 4px 2px 8px;
  scroll-behavior: smooth;
  flex: 1;
}

.rail::-webkit-scrollbar {
  height: 4px;
}

.rail::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

.rail-nav {
  flex-shrink: 0;
  width: 28px;
  height: 38px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 16px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

.rail-nav:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--bg-secondary);
}

/* Blister / Pill Station Cell */
.station-cell {
  position: relative;
  flex-shrink: 0;
  width: 36px;
  height: 46px;
  border-radius: 18px 18px 8px 8px;
  border: 1.5px solid var(--border);
  background: linear-gradient(180deg, var(--surface), var(--bg-secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 13px;
  color: var(--text-primary) !important;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  box-sizing: border-box;
}

.station-cell:hover {
  transform: translateY(-2px);
  border-color: var(--primary);
  color: var(--primary) !important;
}

.station-cell.current {
  background: #4f46e5 !important;
  background: linear-gradient(180deg, #6366f1, #4338ca) !important;
  border-color: #3730a3 !important;
  color: #ffffff !important;
  font-weight: 800 !important;
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.45), 0 0 0 3px rgba(99, 102, 241, 0.35) !important;
  transform: translateY(-3px);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

.station-cell.done {
  background: linear-gradient(180deg, var(--success), #059669) !important;
  border-color: #059669 !important;
  color: #ffffff !important;
  font-weight: 700 !important;
}

.station-cell.done.current {
  background: linear-gradient(180deg, #10b981, #047857) !important;
  border-color: #047857 !important;
  color: #ffffff !important;
  font-weight: 800 !important;
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.45), 0 0 0 3px rgba(16, 185, 129, 0.35) !important;
}

.station-cell.rest {
  border-style: dashed;
  background: var(--bg-secondary);
  color: var(--text-muted);
}

.station-cell[data-cat="clinic"]  { border-top: 3px solid var(--clinic); }
.station-cell[data-cat="product"] { border-top: 3px solid var(--product); }
.station-cell[data-cat="sap"]     { border-top: 3px solid var(--sap); }

.control-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}

/* Overview tab grid */
.overview-caption {
  font-size: 12.5px;
  color: var(--text-secondary);
  margin: 0 0 12px;
}

.grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.grid .station-cell {
  width: 40px;
  height: 50px;
  font-size: 13.5px;
}

/* Station preview banner */
.station-preview {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

.station-preview-head {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.station-preview h2 {
  font-size: 1.1rem;
  margin: 0;
  font-weight: 700;
  color: var(--text-primary);
}

.station-code {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 700;
}

/* Rest station */
.minimap-cell.rest {
  background-color: var(--bg-secondary);
  color: var(--text-muted);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  cursor: default !important;
  border-style: dashed;
}

/* Navigation buttons at bottom of exam */
.exam-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border);
  padding-top: 1rem;
  margin-top: 1.5rem;
}

/* Simulation Results screen */
.results-screen {
  padding: 1.5rem 1rem 3rem 1rem;
}

.results-card {
  max-width: 1280px;
  width: min(1280px, 96vw);
  margin: 0 auto;
  padding: 2.25rem 2rem !important;
  box-sizing: border-box;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: 0 10px 30px -5px rgba(0, 0, 0, 0.08);
}

@media (max-width: 768px) {
  .results-screen {
    padding: 1rem 0.5rem 2rem 0.5rem;
  }
  .results-card {
    width: 100%;
    padding: 1.25rem 0.75rem !important;
    border-radius: var(--radius-md);
  }
}

.results-checklist-item-wrap {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.55rem 0.75rem;
  border-radius: 6px;
  margin-bottom: 0.35rem;
  box-sizing: border-box;
}

.results-checklist-text {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 0.86rem;
  line-height: 1.5;
  color: var(--text-primary);
  word-break: break-word;
  overflow-wrap: anywhere;
  white-space: normal;
}

.results-score-display {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 2rem;
  padding-bottom: 1.75rem;
  border-bottom: 1px solid var(--border);
}

.results-score-circle {
  min-width: 150px;
  max-width: 260px;
  width: auto;
  min-height: 150px;
  height: auto;
  padding: 1.25rem 1.75rem;
  border-radius: var(--radius-full);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--clinic));
  color: white;
  margin: 0 auto 1rem auto;
  box-shadow: 0 10px 25px -5px rgba(99, 102, 241, 0.4);
  box-sizing: border-box;
}

.results-score-num {
  font-family: var(--font-mono);
  font-size: clamp(1.8rem, 6vw, 2.8rem);
  font-weight: 800;
  line-height: 1.1;
  white-space: nowrap;
  text-align: center;
}

.results-score-pct {
  font-family: var(--font-title);
  font-size: 1.15rem;
  font-weight: 600;
  opacity: 0.95;
  margin-top: 4px;
}

.results-status {
  font-family: var(--font-title);
  font-size: 1.4rem;
  font-weight: 800;
  text-align: center;
}

.results-status.passed { color: var(--success); }
.results-status.failed { color: var(--danger); }

.table-responsive {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
  background: var(--surface);
  box-sizing: border-box;
}

/* Breakdown tables */
.breakdown-table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  margin-bottom: 0;
}

.breakdown-table th, .breakdown-table td {
  padding: 0.7rem 0.9rem;
  text-align: left;
}

.breakdown-table th {
  background: var(--bg-secondary);
  border-bottom: 2px solid var(--border);
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 0.84rem;
  white-space: nowrap;
}

.breakdown-table td {
  font-size: 0.88rem;
  white-space: nowrap;
}

.breakdown-table td:nth-child(2) {
  white-space: normal;
  min-width: 160px;
  max-width: 260px;
  word-break: break-word;
}

.breakdown-table tr:not(:last-child) td {
  border-bottom: 1px solid var(--border);
}

/* --- Loader, Empty States, Modals --- */
.loader-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 4rem 0;
  gap: 1rem;
}

.loader-spinner {
  width: 3rem;
  height: 3rem;
  border: 4px solid var(--border);
  border-top-color: var(--primary);
  border-radius: var(--radius-full);
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-secondary);
}

.empty-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

/* Footer credit sub-text */
.footer-credit {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

/* Footer style */
.footer {
  background-color: var(--surface);
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  margin-top: auto;
  font-size: 0.9rem;
  color: var(--text-secondary);
  text-align: center;
  font-family: var(--font-title);
}

.footer p {
  margin-bottom: 0.5rem;
}

/* Embedded Document Frame styling */
.doc-iframe-wrapper {
  position: relative;
  width: 100%;
  height: 600px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-top: 1rem;
}

.doc-iframe {
  width: 100%;
  height: 100%;
  border: none;
}

/* Tab button groups in viewer */
.viewer-tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1.5rem;
}

.viewer-tab-btn {
  padding: 0.75rem 1.25rem;
  border: none;
  background: none;
  font-family: var(--font-title);
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  border-bottom: 3px solid transparent;
  transition: var(--transition);
}

.viewer-tab-btn:hover {
  color: var(--primary);
}

.viewer-tab-btn.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

/* Responsive adjustments */
/* ── Mobile Responsive ── */
@media (max-width: 768px) {
  .hero-title {
    font-size: 2rem;
  }

  .hero {
    padding: 3rem 0 2.5rem 0;
  }

  .navbar .container {
    position: relative;
    flex-wrap: wrap;
    height: auto;
    padding: 0.75rem 1.25rem;
    gap: 0;
  }

  /* Hamburger button — shown on mobile */
  .nav-hamburger {
    display: flex;
    background: none;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.35rem 0.5rem;
    color: var(--text-secondary);
    cursor: pointer;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
  }
  .nav-hamburger:hover {
    background-color: var(--bg-secondary);
  }

  .nav-links {
    display: none;
    flex-direction: column;
    width: 100%;
    gap: 0.25rem;
    padding: 0.75rem 0;
    border-top: 1px solid var(--border);
    margin-top: 0.5rem;
  }
  .nav-links.open {
    display: flex;
  }
  .nav-link {
    width: 100%;
    padding: 0.65rem 0.75rem;
  }
}

/* Hamburger hidden on desktop */
@media (min-width: 769px) {
  .nav-hamburger {
    display: none;
  }
}

/* Base64 Images & Case Media Formatting */
.case-image-wrapper {
  margin: 1.5rem 0;
  text-align: center;
  width: 100%;
}
.case-image {
  max-width: 100% !important;
  height: auto !important;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  transition: transform 0.2s;
}
.case-image:hover {
  transform: scale(1.02);
}

/* Table styling for patient info in dark mode */
[data-theme="dark"] .table-patient-info th {
  background-color: var(--bg-secondary);
}
[data-theme="dark"] .table-patient-info td {
  background-color: var(--surface);
}

/* --- Side-by-Side Image Row (for multiple inline images on same line) --- */
.case-images-row {
  display: flex !important;
  flex-direction: row !important;
  justify-content: center !important;
  align-items: center !important;
  gap: 12px !important;
  margin: 1rem 0 !important;
  width: 100% !important;
}

.case-images-row .case-image-wrapper {
  flex: 1 1 0 !important;
  max-width: 50% !important;
  width: auto !important;
  margin: 0 !important;
}

.case-images-row img,
.case-images-row .case-image {
  max-width: 100% !important;
  max-height: 380px !important;
  width: auto !important;
  height: auto !important;
  object-fit: contain !important;
  margin: 0 auto !important;
}

/* --- Table Image Grid (for tables used as side-by-side image layout) --- */
.table-image-grid {
  width: 100% !important;
  table-layout: fixed !important;
  border-collapse: collapse !important;
  margin: 1rem 0 !important;
}

.table-image-grid th,
.table-image-grid td {
  vertical-align: middle !important;
  text-align: center !important;
  padding: 6px !important;
  border: 1px solid var(--border) !important;
  background: transparent !important;
  word-break: normal !important;
  white-space: normal !important;
}

.table-image-grid .case-image-wrapper {
  margin: 0 auto !important;
  width: 100% !important;
}

.table-image-grid img,
.table-image-grid .case-image {
  max-width: 100% !important;
  max-height: 380px !important;
  width: auto !important;
  height: auto !important;
  object-fit: contain !important;
  margin: 0 auto !important;
}

/* Overrides for any images inside any table cells */
.table-patient-info td .case-image-wrapper,
.table-patient-info th .case-image-wrapper {
  margin: 0.25rem auto !important;
  width: 100% !important;
}

.table-patient-info td img,
.table-patient-info th img {
  max-width: 100% !important;
  max-height: 380px !important;
  margin: 0 auto !important;
}

[data-theme="dark"] .table-image-grid td,
[data-theme="dark"] .table-image-grid th {
  background-color: var(--surface);
  border-color: var(--border);
}

/* --- Examiner Split View Layout (Toggled via JS) --- */
.viewer-grid.examiner-layout {
  display: grid !important;
  grid-template-columns: 1fr 1fr !important;
  gap: 1.5rem !important;
  align-items: start !important;
}

@media (max-width: 992px) {
  .viewer-grid.examiner-layout {
    display: flex !important;
    flex-direction: column !important;
  }
}

.viewer-grid.examiner-layout #left-pane {
  display: block !important;
  width: 100% !important;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
}

.viewer-grid.examiner-layout #right-pane {
  display: block !important;
  width: 100% !important;
  flex: none !important;
  max-width: 100% !important;
}

.viewer-grid.examiner-layout .checklist-container,
.exam-layout.examiner-layout #exam-checklist-container,
.exam-layout.examiner-layout .checklist-container {
  display: flex !important;
  flex-direction: column !important;
  gap: 0.75rem !important;
}

.viewer-grid.examiner-layout .checklist-group-title,
.exam-layout.examiner-layout .checklist-group-title {
  margin-top: 1rem !important;
  border-left: 4px solid var(--primary);
  padding-left: 0.5rem;
}

/* --- Print-Only & No-Print Helpers --- */
.print-only-block {
  display: none;
}

@media print {
  @page {
    size: A4 portrait;
    margin: 10mm 10mm 10mm 10mm;
  }

  .no-print {
    display: none !important;
  }
  .print-only-block {
    display: block !important;
  }
  
  body {
    background-color: white !important;
    color: black !important;
    font-size: 10pt !important;
    line-height: 1.45 !important;
    padding: 0 !important;
    margin: 0 !important;
    width: 100% !important;
  }
  
  .container {
    max-width: 100% !important;
    width: 100% !important;
    padding: 0 !important;
    margin: 0 !important;
  }

  .viewer-grid, .exam-layout {
    display: block !important;
    width: 100% !important;
    margin: 0 !important;
    padding: 0 !important;
  }

  .viewer-pane, .exam-content-pane, .exam-sidebar-pane {
    box-shadow: none !important;
    border: none !important;
    background: transparent !important;
    padding: 0 !important;
    margin: 0 !important;
    width: 100% !important;
  }

  /* Printable Checklist Table Design */
  table.print-checklist-table {
    width: 100% !important;
    border-collapse: collapse !important;
    margin-top: 0.5rem !important;
    margin-bottom: 1rem !important;
    page-break-inside: auto !important;
    break-inside: auto !important;
  }

  table.print-checklist-table thead {
    display: table-header-group !important;
  }

  table.print-checklist-table tr {
    page-break-inside: avoid !important;
    break-inside: avoid !important;
  }

  table.print-checklist-table th, table.print-checklist-table td {
    border: 1px solid #475569 !important;
    padding: 0.4rem 0.6rem !important;
    text-align: left !important;
    color: black !important;
    font-size: 9.5pt !important;
    line-height: 1.35 !important;
  }

  table.print-checklist-table th {
    background-color: #f1f5f9 !important;
    -webkit-print-color-adjust: exact !important;
    print-color-adjust: exact !important;
    font-weight: 700 !important;
    text-align: center !important;
  }

  .print-center-cell {
    text-align: center !important;
    vertical-align: middle !important;
    padding: 0.4rem 0.2rem !important;
  }

  .print-eval-box {
    display: inline-block !important;
    width: 16px !important;
    height: 16px !important;
    margin: 0 auto !important;
    vertical-align: middle !important;
    line-height: 1 !important;
  }

  table.print-checklist-table td.print-center-cell {
    text-align: center !important;
    vertical-align: middle !important;
  }

  table.print-checklist-table tr.print-row-parent {
    background-color: #f1f5f9 !important;
    -webkit-print-color-adjust: exact !important;
    print-color-adjust: exact !important;
  }

  table.print-checklist-table tr.print-row-parent td {
    font-weight: 700 !important;
    color: #0f172a !important;
  }

  table.print-checklist-table tr.print-row-subset {
    background-color: #ffffff !important;
  }

  table.print-checklist-table tr.print-row-subset td:first-child {
    padding-left: 2rem !important;
    color: #334155 !important;
  }

  table.print-checklist-table tr.print-table-group-row td {
    background-color: #e2e8f0 !important;
    -webkit-print-color-adjust: exact !important;
    print-color-adjust: exact !important;
    font-weight: 800 !important;
    color: #1e293b !important;
  }

  .print-page-break {
    page-break-before: auto !important;
    break-before: auto !important;
  }

  h1, h2, h3, h4, .viewer-section-title {
    page-break-after: avoid !important;
    break-after: avoid !important;
  }
}


/* ══════════════════════════════════════════════════
   SKELETON LOADING SYSTEM
   ══════════════════════════════════════════════════ */

/* Base shimmer animation */
@keyframes skeleton-shimmer {
  0% { background-position: -600px 0; }
  100% { background-position: 600px 0; }
}

.skeleton {
  background: linear-gradient(
    90deg,
    var(--border) 25%,
    var(--bg-secondary) 50%,
    var(--border) 75%
  );
  background-size: 600px 100%;
  animation: skeleton-shimmer 1.4s ease infinite;
  border-radius: var(--radius-sm);
  display: block;
}

[data-theme="dark"] .skeleton {
  background: linear-gradient(
    90deg,
    #1e293b 25%,
    #334155 50%,
    #1e293b 75%
  );
  background-size: 600px 100%;
  animation: skeleton-shimmer 1.4s ease infinite;
}

/* ── Skeleton: Stat Card (หน้าแรก) ── */
.skeleton-stat-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
}
.skeleton-stat-card .skel-num {
  width: 60px;
  height: 42px;
  border-radius: var(--radius-md);
}
.skeleton-stat-card .skel-label {
  width: 100px;
  height: 14px;
}

/* ── Skeleton: Case Card (คลังเคส) ── */
.skeleton-case-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  box-shadow: var(--shadow-sm);
  min-height: 160px;
}
.skeleton-case-card .skel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.skeleton-case-card .skel-badge {
  width: 60px;
  height: 22px;
  border-radius: var(--radius-full);
}
.skeleton-case-card .skel-id {
  width: 80px;
  height: 16px;
}
.skeleton-case-card .skel-title {
  width: 85%;
  height: 20px;
  border-radius: var(--radius-sm);
}
.skeleton-case-card .skel-title-short {
  width: 60%;
  height: 20px;
  border-radius: var(--radius-sm);
}
.skeleton-case-card .skel-tag {
  width: 120px;
  height: 14px;
}
.skeleton-case-card .skel-meta {
  display: flex;
  justify-content: space-between;
  margin-top: auto;
}
.skeleton-case-card .skel-stars {
  width: 60px;
  height: 14px;
}
.skeleton-case-card .skel-author {
  width: 90px;
  height: 14px;
}

/* ── Skeleton: Hero Stats (index page) ── */
.stats-grid.is-loading .stat-card {
  position: relative;
  overflow: hidden;
}
.stats-grid.is-loading .stat-num,
.stats-grid.is-loading .stat-label {
  color: transparent;
  border-radius: var(--radius-sm);
}
.stats-grid.is-loading .stat-num::after,
.stats-grid.is-loading .stat-label::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(
    90deg,
    var(--border) 25%,
    var(--bg-secondary) 50%,
    var(--border) 75%
  );
  background-size: 600px 100%;
  animation: skeleton-shimmer 1.4s ease infinite;
}

/* ── Page fade-in after skeleton ── */
@keyframes content-fade-in {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
.content-loaded {
  animation: content-fade-in 0.4s ease forwards;
}
.case-card {
  opacity: 0;
  animation: content-fade-in 0.35s ease forwards;
}
/* Staggered delay for cards */
.case-card:nth-child(1)  { animation-delay: 0.00s; }
.case-card:nth-child(2)  { animation-delay: 0.04s; }
.case-card:nth-child(3)  { animation-delay: 0.08s; }
.case-card:nth-child(4)  { animation-delay: 0.12s; }
.case-card:nth-child(5)  { animation-delay: 0.16s; }
.case-card:nth-child(6)  { animation-delay: 0.20s; }
.case-card:nth-child(7)  { animation-delay: 0.24s; }
.case-card:nth-child(8)  { animation-delay: 0.28s; }
.case-card:nth-child(9)  { animation-delay: 0.32s; }
.case-card:nth-child(10) { animation-delay: 0.36s; }
.case-card:nth-child(n+11) { animation-delay: 0.40s; }

/* ── List View Modifiers ── */
.case-grid.list-view {
  grid-template-columns: 1fr;
  gap: 0.75rem;
}

.case-grid.list-view .case-card,
.case-grid.list-view .skeleton-case-card {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 1.5rem;
  padding: 1rem 1.5rem;
  min-height: auto;
}

.case-grid.list-view .case-card-header {
  flex: 0 0 150px;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.25rem;
  margin-bottom: 0;
}

.case-grid.list-view .case-card-title {
  flex: 1;
  font-size: 1.05rem;
  margin: 0;
}

.case-grid.list-view .case-card-tag {
  display: none;
}
.case-grid.list-view .case-card > div:nth-child(3) {
  display: none;
}

.case-grid.list-view .case-card-meta {
  flex: 0 0 150px;
  margin-top: 0;
  border-top: none;
  padding-top: 0;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.25rem;
}

/* Skeleton List View Modifiers */
.case-grid.list-view .skel-header {
  flex: 0 0 150px;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.25rem;
}
.case-grid.list-view .skel-title {
  flex: 1;
  margin: 0;
}
.case-grid.list-view .skel-title-short,
.case-grid.list-view .skel-tag {
  display: none;
}
.case-grid.list-view .skel-meta {
  flex: 0 0 150px;
  margin-top: 0;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.25rem;
}

/* Mobile responsive for list view */
@media (max-width: 600px) {
  .case-grid.list-view .case-card,
  .case-grid.list-view .skeleton-case-card {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 1rem;
  }
  .case-grid.list-view .case-card-header,
  .case-grid.list-view .case-card-meta,
  .case-grid.list-view .skel-header,
  .case-grid.list-view .skel-meta {
    flex: auto;
    width: 100%;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

/* ══════════════════════════════════════════════════
   API STATUS BANNER & MODAL (Migrated from inline)
   ══════════════════════════════════════════════════ */

.api-banner {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.35rem 1rem;
  font-size: 0.78rem;
  font-weight: 600;
  width: 100%;
  text-align: center;
  font-family: var(--font-title);
  transition: opacity 0.4s ease, transform 0.4s ease;
  backdrop-filter: blur(8px);
}
.api-banner.connected {
  background-color: rgba(16, 185, 129, 0.1);
  color: #047857;
  border-bottom: 1px solid rgba(16, 185, 129, 0.25);
}
.api-banner.offline {
  background-color: rgba(245, 158, 11, 0.1);
  color: #b45309;
  border-bottom: 1px solid rgba(245, 158, 11, 0.25);
}

/* Modal System */
.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(15, 23, 42, 0.5); /* backdrop */
  backdrop-filter: blur(4px);
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease;
  border: none;
}
.modal.show {
  display: flex;
  opacity: 1;
}
.modal-content {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  width: 90%;
  max-width: 500px;
  box-shadow: var(--shadow-lg);
  transform: translateY(20px);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.modal.show .modal-content {
  transform: translateY(0);
}
.modal-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.modal-title {
  font-size: 1.25rem;
  font-family: var(--font-title);
  color: var(--primary);
  margin: 0;
}
.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
}
.modal-close:hover {
  color: var(--danger);
}
.modal-body {
  padding: 1.5rem;
}
.modal-footer {
  padding: 1.25rem 1.5rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  background-color: var(--bg-secondary);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

/* API Config Inputs */
.config-inputs {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.config-input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: var(--transition);
}
.config-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

/* ══════════════════════════════════════════════════
   EXAM SIMULATION PAGE — Specific Styles
   ══════════════════════════════════════════════════ */

/* OTP 4-box room code input */
.otp-box {
  width: 3.2rem;
  height: 3.8rem;
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  text-align: center;
  font-size: 2rem;
  font-weight: 800;
  font-family: var(--font-mono);
  color: var(--primary);
  background: var(--surface);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.otp-box:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}
.otp-box.filled {
  border-color: var(--primary);
  background: color-mix(in srgb, var(--primary) 8%, var(--surface));
}

/* Screen visibility states */
.setup-screen { display: block; }
.exam-screen { display: none; }
.results-screen { display: none; }

/* Exam header */
.exam-header-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.75rem;
}
.current-station-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  font-family: var(--font-title);
}

/* Station category badge */
.station-badge {
  display: inline-block;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 0.9rem;
  color: white;
  font-family: var(--font-title);
}
.station-badge.clinic { background-color: var(--clinic); }
.station-badge.product { background-color: var(--product); }
.station-badge.sap { background-color: var(--sap); }
.station-badge.rest { background-color: var(--text-muted); }

/* Exam note toggle area */
.exam-note-content-area {
  display: none;
  padding: 1rem;
  border: 1px solid var(--border);
  border-top: none;
  background: var(--surface);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  font-size: 0.85rem;
}
.exam-note-content-area.show {
  display: block;
}

/* Proportion row (category checkbox+number) */
.proportion-row {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.65rem 0.8rem;
  border-radius: var(--radius-md);
  background: var(--surface);
  border: 1px solid var(--border);
  margin-bottom: 0;
  transition: all 0.2s;
}
.proportion-row.disabled-row {
  opacity: 0.45;
}
.proportion-row input[type="checkbox"] {
  width: 1.1rem;
  height: 1.1rem;
  accent-color: var(--primary);
  flex-shrink: 0;
  cursor: pointer;
}
.proportion-label {
  font-weight: 700;
  min-width: 48px;
  font-size: 0.88rem;
}
.proportion-label.clinic { color: var(--clinic); }
.proportion-label.product { color: var(--product); }
.proportion-label.sap { color: var(--sap); }
.proportion-label.rest { color: #64748b; }
[data-theme="dark"] .proportion-label.rest { color: #94a3b8; }
.proportion-num-input {
  width: 54px;
  padding: 0.25rem 0.35rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 700;
  text-align: center;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-title);
}
.proportion-num-input:disabled {
  background: var(--surface);
  color: var(--text-muted);
}
.proportion-hint {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-left: auto;
}

/* Full-screen overlay (countdown + timeout popup) */
.fullscreen-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(15, 23, 42, 0.88); /* Uses --bg-primary base, not bare black */
  backdrop-filter: blur(5px);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  color: white;
}

/* Countdown screen (lobby & solo pre-start) */
#lobby-countdown-screen {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(15, 23, 42, 0.92);
  backdrop-filter: blur(6px);
  z-index: 9999;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  color: white;
  animation: fadeIn 0.2s ease;
}

#lobby-countdown-number {
  font-size: 8.5rem;
  font-weight: 900;
  color: var(--primary-light, #818cf8);
  font-family: var(--font-title);
  line-height: 1;
  text-shadow: 0 0 40px rgba(99, 102, 241, 0.6);
  animation: cdNumberPop 1s ease infinite;
}

@keyframes cdNumberPop {
  0% { transform: scale(0.6); opacity: 0; }
  25% { transform: scale(1.12); opacity: 1; }
  40% { transform: scale(1); opacity: 1; }
  85% { transform: scale(1); opacity: 1; }
  100% { transform: scale(1.2); opacity: 0; }
}

/* --- Asymmetric Case Database Layout --- */
.library-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 1.75rem;
  align-items: start;
  margin-top: 1.5rem;
}

@media (max-width: 900px) {
  .library-layout {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  .filter-console {
    position: relative;
    top: 0;
    box-shadow: none;
  }
}

.filter-console {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 1rem 0.85rem;
  position: sticky;
  top: 5rem;
  z-index: 10;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.filter-console .search-input-wrapper {
  position: relative;
  width: 100% !important;
  min-width: 0 !important;
  box-sizing: border-box !important;
}

.filter-console .search-input {
  width: 100% !important;
  box-sizing: border-box !important;
  padding: 0.42rem 0.75rem 0.42rem 2.2rem;
  font-size: 0.82rem;
  height: 34px;
}

.filter-console .search-icon-svg {
  position: absolute;
  left: 0.65rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  width: 15px;
  height: 15px;
}

.filter-group-label {
  font-family: var(--font-title);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  margin-bottom: -0.35rem;
  display: block;
}

.filter-console .filter-selects {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  width: 100% !important;
  min-width: 0 !important;
  box-sizing: border-box !important;
}

.filter-console .select-filter {
  width: 100% !important;
  max-width: 100% !important;
  box-sizing: border-box !important;
  margin: 0 !important;
  border-radius: var(--radius-md);
  padding: 0.4rem 1.6rem 0.4rem 0.65rem !important;
  font-size: 0.82rem !important;
  height: 34px !important;
  background-position: right 0.5rem center !important;
  background-size: 0.85rem !important;
}

.filter-toolbar-row {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 0.2rem;
  width: 100%;
}

.filter-console .view-toggles {
  display: flex;
  gap: 0.15rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.15rem;
  flex-shrink: 0;
}

.filter-console .view-toggle-btn {
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  padding: 0.25rem 0.45rem;
  cursor: pointer;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  height: 28px;
}

.filter-console .view-toggle-btn.active {
  background: var(--surface);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-compact-reset {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  font-size: 0.76rem;
  font-weight: 600;
  font-family: var(--font-body);
  height: 30px;
  padding: 0 0.5rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-compact-reset:hover {
  background: var(--surface);
  color: var(--text-primary);
  border-color: var(--text-muted);
}

.filter-actions-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.4rem;
  width: 100%;
}

.btn-filter-action {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  font-size: 1.05rem;
  font-weight: 700;
  font-family: var(--font-body);
  height: 36px;
  padding: 0 0.35rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.18s ease;
  white-space: nowrap;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
  box-sizing: border-box;
  margin: 0;
}

.btn-filter-action:hover {
  background: var(--bg-secondary);
  border-color: var(--text-muted);
  transform: translateY(-1px);
}

/* 2-Column Action Buttons Grid in Case Viewer */
.viewer-actions-grid-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  margin-top: 1rem;
}
.viewer-actions-grid-2col .btn {
  width: 100% !important;
  padding: 0.55rem 0.5rem !important;
  font-size: 0.85rem !important;
  font-weight: 600 !important;
  justify-content: center !important;
  text-align: center !important;
}

.btn-print-action {
  border: 1px solid var(--primary);
  background: transparent;
  color: var(--primary);
}

.btn-print-action:hover {
  background: var(--primary);
  color: #fff;
}

.btn-report-action {
  border: 1px solid #e53e3e;
  background: transparent;
  color: #e53e3e;
}

.btn-report-action:hover {
  background: #e53e3e;
  color: #fff;
}

[data-theme="dark"] .btn-report-action {
  border-color: #fc8181;
  color: #fc8181;
}

[data-theme="dark"] .btn-report-action:hover {
  background: #fc8181;
  color: #1a202c;
}

/* ══════════════════════════════════════════════════
   PASSWORD GATE UI (AUTH LOCK SCREEN)
   ══════════════════════════════════════════════════ */
body.auth-locked {
  overflow: hidden !important;
}

body.auth-locked > *:not(#auth-gate-overlay) {
  filter: blur(8px);
  pointer-events: none;
  user-select: none;
}

.auth-gate-overlay {
  position: fixed;
  inset: 0;
  z-index: 999999;
  background: rgba(15, 23, 42, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  animation: authFadeIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes authFadeIn {
  from { opacity: 0; transform: scale(0.96); }
  to   { opacity: 1; transform: scale(1); }
}

.auth-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5), var(--shadow-glow);
  width: 100%;
  max-width: 440px;
  padding: 2.5rem 2rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.auth-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--clinic), var(--product), var(--sap));
}

.auth-icon-circle {
  width: 4.5rem;
  height: 4.5rem;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.2rem;
  margin: 0 auto 1.25rem auto;
  box-shadow: var(--shadow-sm);
}

.auth-title {
  font-size: 1.6rem;
  font-weight: 700;
  font-family: var(--font-title);
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.auth-subtitle {
  font-size: 0.92rem;
  color: var(--text-secondary);
  margin-bottom: 1.75rem;
  line-height: 1.55;
}

.auth-input-group {
  position: relative;
  margin-bottom: 1.25rem;
}

.auth-input {
  width: 100%;
  padding: 0.85rem 3rem 0.85rem 1.25rem;
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 1.1rem;
  letter-spacing: 0.05em;
  transition: var(--transition);
}

.auth-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px var(--primary-light);
}

.auth-eye-btn {
  position: absolute;
  right: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.25rem;
  display: flex;
  align-items: center;
  transition: var(--transition);
}

.auth-eye-btn:hover {
  color: var(--primary);
}

.auth-error-msg {
  display: none;
  color: var(--danger);
  font-size: 0.85rem;
  font-weight: 600;
  font-family: var(--font-title);
  margin-bottom: 1.25rem;
  padding: 0.6rem;
  background: rgba(239, 68, 68, 0.1);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(239, 68, 68, 0.25);
}

.auth-submit-btn {
  width: 100%;
  padding: 0.85rem;
  font-size: 1rem;
  font-weight: 700;
  font-family: var(--font-title);
}

.nav-logout-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-family: var(--font-title);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: var(--transition);
}

.nav-logout-btn:hover {
  background: rgba(239, 68, 68, 0.1);
  color: var(--danger);
  border-color: var(--danger);
}

/* ══════════════════════════════════════════════════
   INLINE CONTENT IMAGE CONSTRAINTS & LIGHTBOX SYSTEM
   ══════════════════════════════════════════════════ */

#case-scenario-content img,
#case-patient-content img,
#case-equipment-content img,
#exam-scenario-content img,
#exam-patient-content img,
#exam-equipment-content img,
.case-content-area img {
  max-width: 100% !important;
  max-height: 460px !important;
  width: auto !important;
  height: auto !important;
  object-fit: contain !important;
  display: block;
  margin: 1rem auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  cursor: zoom-in;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

#case-scenario-content img:hover,
#case-patient-content img:hover,
#case-equipment-content img:hover,
#exam-scenario-content img:hover,
#exam-patient-content img:hover,
#exam-equipment-content img:hover,
.case-content-area img:hover {
  transform: scale(1.015);
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
}

/* Interactive Zoom & Drag Lightbox */
.lightbox-overlay {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(15, 23, 42, 0.94);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  z-index: 999999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 1.25rem;
}

.lightbox-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.lightbox-toolbar {
  width: 100%;
  max-width: 900px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 10;
  gap: 1rem;
  background: var(--surface);
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
}

.lightbox-hint {
  font-family: var(--font-title);
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.lightbox-actions {
  display: flex;
  gap: 0.4rem;
  align-items: center;
}

.lightbox-btn {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-md);
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition);
}

.lightbox-btn:hover {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.lightbox-btn-close {
  background: var(--danger);
  color: white;
  border-color: var(--danger);
  border-radius: var(--radius-full);
  width: 2.2rem;
  height: 2.2rem;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox-btn-close:hover {
  background: #dc2626;
}

.lightbox-img-wrapper {
  flex: 1;
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
  position: relative;
  cursor: grab;
  user-select: none;
}

.lightbox-content {
  max-width: 88vw;
  max-height: 80vh;
  border-radius: var(--radius-md);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.6);
  transition: transform 0.08s ease-out;
  transform-origin: center center;
  object-fit: contain;
  pointer-events: auto;
}

/* ==========================================================================
   Database Preload Splash Screen (Game-style Glassmorphism)
   ========================================================================== */
.db-splash-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(15, 23, 42, 0.96); /* Deep slate dark */
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 99999;
  transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.4s;
  opacity: 0;
  visibility: hidden;
  font-family: var(--font-body);
}

.db-splash-overlay.active {
  opacity: 1;
  visibility: visible;
}

.db-splash-card {
  width: 90%;
  max-width: 440px;
  background: rgba(30, 41, 59, 0.75); /* Translucent slate */
  border: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: var(--radius-xl);
  padding: 3rem 2rem;
  text-align: center;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7), 
              0 0 60px rgba(99, 102, 241, 0.2); /* Indigo aura */
  color: #f8fafc;
  transform: translateY(20px);
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.db-splash-overlay.active .db-splash-card {
  transform: translateY(0);
}

.db-splash-logo {
  font-size: 3.8rem;
  margin-bottom: 1.25rem;
  display: inline-block;
  animation: splash-pulse-glow 2.2s infinite ease-in-out;
}

@keyframes splash-pulse-glow {
  0%, 100% { 
    transform: scale(1); 
    filter: drop-shadow(0 0 8px rgba(99, 102, 241, 0.4)); 
  }
  50% { 
    transform: scale(1.06); 
    filter: drop-shadow(0 0 24px rgba(99, 102, 241, 0.85)); 
  }
}

.db-splash-title {
  font-family: var(--font-title);
  font-size: 1.9rem;
  font-weight: 800;
  margin: 0 0 0.5rem 0;
  background: linear-gradient(135deg, #a5b4fc, #6366f1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.5px;
}

.db-splash-status {
  font-size: 0.88rem;
  color: #94a3b8;
  margin: 0 0 1.75rem 0;
  line-height: 1.5;
}

.db-splash-progress-container {
  width: 100%;
  height: 10px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: 0.8rem;
  border: 1px solid rgba(255, 255, 255, 0.05);
  position: relative;
}

.db-splash-progress-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #4f46e5, #818cf8);
  box-shadow: 0 0 15px rgba(99, 102, 241, 0.7);
  border-radius: var(--radius-full);
  transition: width 0.1s ease-out;
}

.db-splash-percentage {
  font-size: 1.4rem;
  font-weight: 800;
  font-family: var(--font-mono);
  color: #818cf8;
  margin-bottom: 1.75rem;
}

.db-splash-hint {
  font-size: 0.78rem;
  color: #64748b;
  line-height: 1.5;
  margin: 0;
}

/* ══════════════════════════════════════════════════════════════
   Print Customization & Batch Multi-Case Print System
   ══════════════════════════════════════════════════════════════ */

.print-modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 1;
  animation: fadeInModal 0.2s ease-out;
}

@keyframes fadeInModal {
  from { opacity: 0; transform: scale(0.98); }
  to { opacity: 1; transform: scale(1); }
}

.print-modal-card {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--border);
  width: 100%;
  max-width: 960px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.print-modal-header {
  padding: 1.25rem 1.5rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.print-modal-body {
  padding: 1.5rem;
  overflow-y: auto;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.print-options-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}

.print-option-group {
  background: var(--bg-secondary);
  padding: 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
}

.print-option-title {
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-primary);
  margin-bottom: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.print-radio-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.print-radio-label {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-primary);
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: rgba(0,0,0,0.05);
  transition: all 0.15s ease;
  min-height: 44px;
}

.print-radio-label:hover,
.print-radio-label:active {
  border-color: var(--primary);
  background: var(--bg-secondary);
}

.print-radio-label input[type="radio"],
.print-radio-label input[type="checkbox"] {
  margin-top: 0.15rem;
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  cursor: pointer;
}

.print-preview-container {
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  max-height: 320px;
  overflow: auto;
  display: flex;
  justify-content: center;
}

.print-preview-paper {
  background: #ffffff;
  color: #0f172a;
  padding: 1.5rem;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  border-radius: 4px;
  transform-origin: top center;
  transition: transform 0.2s ease;
}

.print-preview-paper.landscape {
  width: 100%;
  max-width: 850px;
}

.print-preview-paper.portrait {
  width: 100%;
  max-width: 620px;
}

/* Print Specific Overrides via Body CSS Classes */
body.print-mode-question .print-hide-question {
  display: none !important;
}

body.print-mode-checklist .print-hide-checklist {
  display: none !important;
}

.print-eval-box {
  display: inline-block;
  width: 18px;
  height: 18px;
  border: 1.5px solid #334155;
  border-radius: 3px;
  background-color: #ffffff;
  margin: 0 auto;
  vertical-align: middle;
}

/* Screen isolation when print dialog is active (iOS AirPrint & Mobile Safari) */
body.is-printing > *:not(#single-case-print-execution-area):not(#batch-print-execution-area):not(#ospe-results-print-area) {
  display: none !important;
}

body.is-printing #single-case-print-execution-area,
body.is-printing #batch-print-execution-area,
body.is-printing #ospe-results-print-area {
  display: block !important;
  visibility: visible !important;
  position: absolute !important;
  top: 0 !important;
  left: 0 !important;
  width: 100% !important;
  z-index: 999999 !important;
  background: #ffffff !important;
}

@media print {
  html, body {
    height: auto !important;
    min-height: 100% !important;
    overflow: visible !important;
    position: static !important;
    background: #ffffff !important;
    color: #000000 !important;
    -webkit-print-color-adjust: exact !important;
    print-color-adjust: exact !important;
    margin: 0 !important;
    padding: 0 !important;
    width: 100% !important;
  }

  /* Universal Mobile (iOS Safari & Android Chrome) & Desktop Isolation */
  body > *:not(#single-case-print-execution-area):not(#batch-print-execution-area):not(#ospe-results-print-area) {
    display: none !important;
  }

  .no-print,
  .navbar,
  .hero,
  .main-section,
  #main-nav,
  #main-footer,
  #case-viewer-app,
  .footer,
  .print-modal-overlay,
  .filter-console,
  .loader-container,
  aside, header, nav, footer, iframe {
    display: none !important;
  }

  #single-case-print-execution-area,
  #batch-print-execution-area,
  #ospe-results-print-area {
    display: block !important;
    position: static !important;
    width: 100% !important;
    margin: 0 !important;
    padding: 0 !important;
    visibility: visible !important;
    box-shadow: none !important;
    background: transparent !important;
    overflow: visible !important;
  }

  h1, h2, h3, h4, .viewer-section-title {
    page-break-after: avoid !important;
    break-after: avoid !important;
  }

  .print-page-break-before {
    page-break-before: always !important;
    break-before: page !important;
    margin-top: 1rem !important;
  }

  .print-center-cell {
    text-align: center !important;
    vertical-align: middle !important;
  }

  body.print-scale-80 {
    font-size: 8pt !important;
    zoom: 80% !important;
  }

  body.print-scale-100 {
    font-size: 10pt !important;
    zoom: 100% !important;
  }

  body.print-scale-120 {
    font-size: 12pt !important;
    zoom: 120% !important;
  }

  body.print-scale-140 {
    font-size: 14pt !important;
    zoom: 140% !important;
  }

  body.print-scale-160 {
    font-size: 16pt !important;
    zoom: 160% !important;
  }

  .batch-print-case {
    page-break-after: always !important;
    break-after: page !important;
    padding-bottom: 2rem !important;
  }

  .batch-print-case p,
  .print-preview-paper p {
    margin: 0 0 0.45rem 0 !important;
    line-height: 1.55 !important;
  }

  .batch-print-case ul,
  .batch-print-case ol,
  .print-preview-paper ul,
  .print-preview-paper ol {
    margin: 0.35rem 0 !important;
    padding-left: 1.6rem !important;
  }

  .batch-print-case li,
  .print-preview-paper li {
    margin-bottom: 0.3rem !important;
    line-height: 1.45 !important;
  }
}



/* ══════════════════════════════════════════════════════════════════
   CASE REPORT SYSTEM
   ══════════════════════════════════════════════════════════════════ */

/* ── Report Button in Filter Sidebar ── */
.btn-report-case {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  padding: 0.6rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 600;
  font-family: var(--font-body);
  border: 1.5px solid #e53e3e;
  background: transparent;
  color: #e53e3e;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.18s ease;
  margin-top: 0.5rem;
}
.btn-report-case:hover {
  background: #e53e3e;
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(229, 62, 62, 0.25);
}
[data-theme="dark"] .btn-report-case { border-color: #fc8181; color: #fc8181; }
[data-theme="dark"] .btn-report-case:hover { background: #fc8181; color: #1a202c; }

/* ── Report Modal Overlay ── */
.report-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  backdrop-filter: blur(4px);
  z-index: 9000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}
.report-modal-overlay.show { opacity: 1; pointer-events: all; }

/* ── Report Modal Card ── */
.report-modal-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) * 2);
  box-shadow: 0 20px 60px rgba(0,0,0,0.25);
  width: 100%;
  max-width: 560px;
  max-height: 90vh;
  overflow-y: auto;
  transform: translateY(20px) scale(0.97);
  transition: transform 0.22s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.report-modal-overlay.show .report-modal-card { transform: translateY(0) scale(1); }
.report-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
}
.report-modal-header h3 {
  font-family: var(--font-title);
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-primary);
}
.report-modal-close {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-secondary);
  padding: 0.25rem;
  border-radius: var(--radius);
  font-size: 1.25rem;
  line-height: 1;
  transition: background 0.15s;
}
.report-modal-close:hover { background: var(--bg-secondary); }
.report-modal-body { padding: 1.5rem; display: flex; flex-direction: column; gap: 1.1rem; }

/* ── Form Elements ── */
.report-form-group { display: flex; flex-direction: column; gap: 0.4rem; }
.report-form-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  font-family: var(--font-title);
}
.report-form-label .required { color: #e53e3e; margin-left: 2px; }

.report-case-search-wrapper { position: relative; }
.report-case-search-input, .report-select, .report-textarea {
  width: 100%;
  padding: 0.6rem 0.75rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 0.9rem;
  font-family: var(--font-body);
  box-sizing: border-box;
  transition: border-color 0.15s;
}
.report-case-search-input:focus, .report-select:focus, .report-textarea:focus {
  outline: none;
  border-color: var(--primary);
}
.report-textarea { resize: vertical; min-height: 90px; line-height: 1.5; }

.report-case-dropdown {
  position: absolute;
  top: calc(100% + 4px);
  left: 0; right: 0;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 8px 24px rgba(0,0,0,0.12);
  max-height: 200px;
  overflow-y: auto;
  z-index: 100;
  display: none;
}
.report-case-dropdown.show { display: block; }
.report-case-option {
  padding: 0.55rem 0.75rem;
  font-size: 0.875rem;
  cursor: pointer;
  color: var(--text-primary);
  transition: background 0.1s;
  border-bottom: 1px solid var(--border);
}
.report-case-option:last-child { border-bottom: none; }
.report-case-option:hover { background: var(--bg-secondary); }
.report-case-option .opt-id { font-weight: 700; color: var(--primary); margin-right: 0.4rem; font-size: 0.8rem; }
.report-case-option .opt-title { color: var(--text-secondary); font-size: 0.82rem; }

.report-selected-case-badge {
  display: none;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.75rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-top: 0.35rem;
}
.report-selected-case-badge.show { display: flex; }
.report-selected-case-badge strong { color: var(--primary); }
.report-selected-case-clear {
  margin-left: auto; cursor: pointer; color: var(--text-muted);
  background: none; border: none; font-size: 1rem; padding: 0; line-height: 1;
}
.report-selected-case-clear:hover { color: #e53e3e; }

.report-modal-footer {
  display: flex; align-items: center; justify-content: flex-end;
  gap: 0.75rem; padding: 1rem 1.5rem; border-top: 1px solid var(--border);
}
.report-submit-btn {
  display: inline-flex; align-items: center; gap: 0.4rem;
  padding: 0.6rem 1.25rem; background: #e53e3e; color: #fff;
  border: none; border-radius: var(--radius); font-weight: 700;
  font-size: 0.9rem; cursor: pointer; transition: all 0.15s;
  font-family: var(--font-body);
}
.report-submit-btn:hover:not(:disabled) { background: #c53030; transform: translateY(-1px); }
.report-submit-btn:disabled { opacity: 0.6; cursor: not-allowed; }
.report-cancel-btn {
  display: inline-flex; align-items: center; padding: 0.6rem 1rem;
  background: var(--bg-secondary); color: var(--text-secondary);
  border: 1px solid var(--border); border-radius: var(--radius);
  font-weight: 600; font-size: 0.9rem; cursor: pointer;
  transition: background 0.15s; font-family: var(--font-body);
}
.report-cancel-btn:hover { background: var(--border); }

/* ── Toast ── */
.report-toast {
  position: fixed;
  bottom: 1.5rem; left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: #2f855a; color: #fff;
  padding: 0.75rem 1.5rem;
  border-radius: calc(var(--radius) * 2);
  font-weight: 600; font-size: 0.9rem;
  font-family: var(--font-body);
  box-shadow: 0 8px 24px rgba(0,0,0,0.2);
  z-index: 9999;
  transition: transform 0.3s cubic-bezier(0.34,1.56,0.64,1), opacity 0.3s ease;
  opacity: 0; pointer-events: none;
  display: flex; align-items: center; gap: 0.5rem;
  white-space: nowrap;
}
.report-toast.show { transform: translateX(-50%) translateY(0); opacity: 1; }
.report-toast.error-toast { background: #c53030; }

/* ── Report History Section ── */
.report-history-section {
  padding: 2rem 0;
  margin-top: 1rem;
  border-top: 2px dashed var(--border);
}
.report-history-header {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; margin-bottom: 1rem; flex-wrap: wrap;
}
.report-history-title {
  display: flex; align-items: center; gap: 0.5rem;
  font-family: var(--font-title); font-size: 1.1rem; font-weight: 700;
  color: var(--text-primary); margin: 0;
}
.report-history-count-badge {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 22px; height: 22px; padding: 0 6px;
  background: #e53e3e; color: #fff; border-radius: 999px;
  font-size: 0.75rem; font-weight: 700;
}
.report-history-filter-group { display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap; }
.report-history-filter-btn {
  padding: 0.3rem 0.7rem;
  border: 1.5px solid var(--border); border-radius: 999px;
  background: transparent; color: var(--text-secondary);
  font-size: 0.8rem; font-weight: 600; cursor: pointer;
  transition: all 0.15s; font-family: var(--font-body);
}
.report-history-filter-btn:hover,
.report-history-filter-btn.active {
  border-color: var(--primary); color: var(--primary);
  background: rgba(66,153,225,0.08);
}
.report-history-toggle-btn {
  padding: 0.4rem 0.85rem;
  border: 1.5px solid var(--border); border-radius: var(--radius);
  background: var(--bg-secondary); color: var(--text-secondary);
  font-size: 0.82rem; font-weight: 600; cursor: pointer;
  transition: all 0.15s; font-family: var(--font-body);
}
.report-history-toggle-btn:hover { background: var(--border); }

/* ── Report Table ── */
.report-history-table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}
.report-history-table {
  width: 100%; border-collapse: collapse;
  font-size: 0.875rem; font-family: var(--font-body);
  min-width: 700px;
}
.report-history-table th {
  padding: 0.7rem 1rem;
  background: var(--bg-secondary); color: var(--text-secondary);
  font-weight: 700; text-align: left;
  border-bottom: 2px solid var(--border);
  white-space: nowrap; font-size: 0.8rem;
  letter-spacing: 0.02em; text-transform: uppercase;
}
.report-history-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-primary); vertical-align: top;
}
.report-history-table tr:last-child td { border-bottom: none; }
.report-history-table tr:hover td { background: var(--bg-secondary); }

.report-case-id-link {
  font-weight: 700; color: var(--primary);
  text-decoration: none; font-size: 0.82rem;
}
.report-case-id-link:hover { text-decoration: underline; }
.report-problem-type {
  font-size: 0.78rem; color: var(--text-secondary);
  background: var(--bg-secondary); border: 1px solid var(--border);
  border-radius: 999px; padding: 0.15rem 0.55rem;
  display: inline-block; white-space: nowrap;
}
.report-description-cell {
  max-width: 250px; white-space: normal; line-height: 1.4;
  font-size: 0.85rem; color: var(--text-secondary);
}
.report-staff-notes-cell {
  max-width: 200px; font-size: 0.82rem; color: var(--text-secondary); font-style: italic;
}
.report-timestamp { font-size: 0.78rem; color: var(--text-muted); white-space: nowrap; }

/* ── Status Badges ── */
.report-status-badge {
  display: inline-flex; align-items: center; gap: 0.3rem;
  padding: 0.25rem 0.65rem; border-radius: 999px;
  font-weight: 700; font-size: 0.78rem; white-space: nowrap;
  border: 1.5px solid transparent;
}
.report-status-badge.status-pending {
  background: rgba(229,62,62,0.1); color: #c53030; border-color: rgba(229,62,62,0.3);
}
.report-status-badge.status-in-progress {
  background: rgba(237,137,54,0.1); color: #c05621; border-color: rgba(237,137,54,0.3);
}
.report-status-badge.status-resolved {
  background: rgba(47,133,90,0.1); color: #276749; border-color: rgba(47,133,90,0.3);
}
[data-theme="dark"] .report-status-badge.status-pending { background: rgba(252,129,74,0.15); color: #fc8181; border-color: rgba(252,129,74,0.3); }
[data-theme="dark"] .report-status-badge.status-in-progress { background: rgba(246,173,85,0.15); color: #f6ad55; border-color: rgba(246,173,85,0.3); }
[data-theme="dark"] .report-status-badge.status-resolved { background: rgba(104,211,145,0.15); color: #68d391; border-color: rgba(104,211,145,0.3); }

/* ── Empty / Loading ── */
.report-history-empty { text-align: center; padding: 2.5rem 1rem; color: var(--text-muted); font-size: 0.9rem; }
.report-history-empty .empty-icon { font-size: 2.5rem; margin-bottom: 0.5rem; }
.report-history-loading {
  display: flex; align-items: center; justify-content: center;
  gap: 0.5rem; padding: 2rem; color: var(--text-secondary); font-size: 0.9rem;
}
.report-history-spinner {
  width: 18px; height: 18px;
  border: 2px solid var(--border); border-top-color: var(--primary);
  border-radius: 50%; animation: spin 0.7s linear infinite;
}

@media (max-width: 600px) {
  .report-modal-card { max-width: 100%; }
  .report-history-header { flex-direction: column; align-items: flex-start; }
  .report-history-table { min-width: 500px; }
}

/* ══════════════════════════════════════════════════════════════
   MOBILE RESPONSIVE EXAM & VIEWER OPTIMIZATIONS (<= 768px)
   ══════════════════════════════════════════════════════════════ */
@media (max-width: 768px) {
  /* Prevent horizontal overflow across the entire page without breaking sticky */
  html, body {
    overflow-x: clip !important;
    max-width: 100vw !important;
  }

  .container {
    padding: 0 10px !important;
    width: 100% !important;
    max-width: 100% !important;
  }

  .app-shell, .page-viewport {
    width: 100% !important;
    max-width: 100% !important;
    overflow-x: clip !important;
  }

  /* Setup view panel */
  .setup-panel {
    padding: 1.25rem 0.85rem !important;
    margin: 0.75rem auto !important;
  }

  .mode-selection-grid {
    grid-template-columns: 1fr !important;
    gap: 0.75rem !important;
  }

  /* Compact Sticky Timer Bar for Mobile & iPad */
  .exam-sticky-timer-bar {
    position: -webkit-sticky !important;
    position: sticky !important;
    top: 0 !important;
    top: env(safe-area-inset-top, 0px) !important;
    z-index: 1000 !important;
    padding: 6px 10px !important;
    padding-top: max(6px, env(safe-area-inset-top, 0px)) !important;
    margin-bottom: 6px !important;
    border-radius: var(--radius-sm) !important;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08) !important;
    background: var(--surface) !important;
  }

  .exam-sticky-timer-bar .timer-row {
    flex-direction: row !important;
    align-items: center !important;
    justify-content: space-between !important;
    gap: 6px !important;
    flex-wrap: nowrap !important;
  }

  .exam-sticky-timer-bar .timer-fuse-col {
    min-width: 0 !important;
    flex: 1 1 auto !important;
  }

  .exam-sticky-timer-bar .timer-readout-wrap {
    gap: 6px !important;
    flex-wrap: nowrap !important;
  }

  .exam-sticky-timer-bar .timer-readout #exam-timer {
    font-size: 21px !important;
    letter-spacing: -0.02em !important;
  }

  .exam-sticky-timer-bar #exam-timer-label {
    display: none !important;
  }

  .exam-sticky-timer-bar .timer-action-btns {
    gap: 8px !important;
  }

  .exam-sticky-timer-bar .timer-action-btns .btn {
    padding: 6px 10px !important;
    min-height: 38px !important;
    font-size: 12px !important;
    border-radius: var(--radius-sm) !important;
    white-space: nowrap !important;
  }

  .exam-sticky-timer-bar .timer-fuse-track {
    height: 4px !important;
    margin-top: 2px !important;
  }

  .exam-sticky-timer-bar .score-chip {
    padding: 3px 8px !important;
    font-size: 11px !important;
    gap: 4px !important;
    flex-shrink: 0 !important;
    white-space: nowrap !important;
  }

  .exam-sticky-timer-bar .score-chip strong {
    font-size: 12px !important;
  }

  /* Control Tab & Blister Rail on Mobile */
  .exam-sticky-top-header {
    margin-bottom: 0.75rem !important;
  }

  .control-tab {
    border-radius: var(--radius-md) !important;
    margin-bottom: 6px !important;
  }

  .tab-head {
    padding: 6px 10px !important;
  }

  .control-tab .tab {
    padding: 4px 9px !important;
    font-size: 11.5px !important;
  }

  .station-indicator {
    font-size: 11.5px !important;
  }

  .tab-panel {
    padding: 8px 10px !important;
  }

  .rail-wrap {
    gap: 4px !important;
    margin-bottom: 6px !important;
  }

  .rail {
    padding: 2px 0 6px 0 !important;
    gap: 6px !important;
  }

  .station-cell {
    width: 33px !important;
    height: 40px !important;
    font-size: 11.5px !important;
    border-radius: 16px 16px 6px 6px !important;
  }

  .rail-nav {
    width: 22px !important;
    height: 34px !important;
    font-size: 14px !important;
  }

  .control-actions {
    gap: 6px !important;
  }

  .control-actions .exam-nav {
    gap: 4px !important;
  }

  .control-actions .btn {
    padding: 5px 9px !important;
    font-size: 11.5px !important;
  }

  /* Station Preview Banner */
  .station-preview {
    padding: 10px 12px !important;
    margin-top: 6px !important;
    margin-bottom: 8px !important;
    border-radius: var(--radius-md) !important;
    gap: 8px !important;
  }

  .station-preview-head {
    gap: 6px !important;
  }

  .station-badge {
    font-size: 11px !important;
    padding: 2px 7px !important;
  }

  .station-preview h2 {
    font-size: 1.05rem !important;
    line-height: 1.35 !important;
  }

  .station-code {
    font-size: 11px !important;
  }

  #btn-update-sim-doc {
    font-size: 11px !important;
    padding: 4px 8px !important;
    width: 100% !important;
    text-align: center !important;
    justify-content: center !important;
  }

  /* Exam Content Pane */
  .exam-content-pane {
    padding: 1.15rem 0.85rem !important;
    border-radius: var(--radius-md) !important;
  }

  .viewer-section-title {
    font-size: 1.05rem !important;
    margin-top: 0.25rem !important;
    margin-bottom: 0.75rem !important;
    padding-left: 0.5rem !important;
  }

  #exam-scenario-content,
  #exam-patient-content,
  #exam-equipment-content,
  #exam-note-content-area {
    font-size: 0.95rem !important;
    line-height: 1.6 !important;
  }

  /* Image Responsive Overrides */
  #exam-scenario-content img,
  #exam-patient-content img,
  #exam-equipment-content img,
  .case-image,
  .case-image-wrapper img {
    max-width: 100% !important;
    height: auto !important;
    max-height: 320px !important;
    margin: 0.6rem auto !important;
  }

  .case-images-row {
    flex-direction: column !important;
    gap: 8px !important;
  }

  .case-images-row .case-image-wrapper {
    max-width: 100% !important;
    width: 100% !important;
  }

  .table-image-grid {
    width: 100% !important;
    table-layout: auto !important;
  }

  .table-image-grid td, .table-image-grid th {
    padding: 3px !important;
  }

  /* Accordions */
  .patient-accordion, .equipment-accordion {
    margin-bottom: 1rem !important;
    border-radius: var(--radius-md) !important;
  }

  #exam-patient-toggle-btn, #exam-equipment-toggle-btn {
    padding: 0.65rem 0.85rem !important;
    font-size: 0.92rem !important;
  }

  #exam-patient-content, #exam-equipment-content {
    padding: 0.75rem !important;
  }

  .table-patient-info {
    font-size: 0.82rem !important;
  }

  .table-patient-info th, .table-patient-info td {
    padding: 0.4rem 0.5rem !important;
  }

  /* Examiner Layout on Mobile */
  .viewer-grid.examiner-layout .checklist-container,
  .exam-layout.examiner-layout #exam-checklist-container,
  .exam-layout.examiner-layout .checklist-container {
    grid-template-columns: 1fr !important;
    gap: 0.6rem !important;
  }

  .checklist-item {
    min-height: 44px !important;
    padding: 0.65rem 0.75rem !important;
    margin-bottom: 0.5rem !important;
    gap: 0.6rem !important;
  }

  .checklist-item.is-subset {
    margin-left: 1rem !important;
  }

  .checklist-item-text {
    font-size: 0.9rem !important;
  }

  /* Results Screen */
  .results-card {
    padding: 1.25rem 0.75rem !important;
    border-radius: var(--radius-md) !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .results-score-circle {
    min-width: 130px !important;
    max-width: 220px !important;
    min-height: 130px !important;
    padding: 1rem 1.25rem !important;
  }

  .results-score-num {
    font-size: clamp(1.5rem, 6.5vw, 2.2rem) !important;
  }

  .results-score-pct {
    font-size: 1.05rem !important;
  }

  .results-status {
    font-size: 1.25rem !important;
  }

  #results-summary-desc {
    font-size: 0.82rem !important;
    line-height: 1.45 !important;
  }

  .table-responsive {
    border-radius: var(--radius-sm) !important;
    margin-top: 0.75rem !important;
  }

  .breakdown-table th, .breakdown-table td {
    padding: 0.55rem 0.65rem !important;
    font-size: 0.8rem !important;
  }
}

/* ══════════════════════════════════════════════════════════════
   DIGITAL SCRATCHPAD & DRAWING CANVAS (v2.0)
   ══════════════════════════════════════════════════════════════ */
.scratchpad-fab {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 1050;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.15rem;
  background: var(--surface);
  color: var(--primary);
  border: 1.5px solid var(--primary);
  border-radius: var(--radius-full);
  box-shadow: 0 4px 16px rgba(14, 116, 144, 0.20), var(--shadow-md);
  font-family: var(--font-title);
  font-size: 0.88rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.2, 0.9, 0.3, 1);
  user-select: none;
}
.scratchpad-fab:hover {
  background: var(--primary);
  color: #FFFFFF;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(14, 116, 144, 0.30);
}
.scratchpad-fab.active {
  background: var(--primary);
  color: #FFFFFF;
}
.scratchpad-fab-icon {
  font-size: 1.15rem;
  line-height: 1;
}
.scratchpad-badge {
  display: inline-block;
  width: 8px;
  height: 8px;
  background: #EF4444;
  border-radius: 50%;
  margin-left: 2px;
}

/* Scratchpad Panel Container */
.scratchpad-panel {
  position: fixed;
  bottom: 84px;
  right: 24px;
  z-index: 1060;
  width: 480px;
  max-width: calc(100vw - 20px);
  height: 540px;
  max-height: calc(100vh - 20px);
  background: var(--surface);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-lg);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.16), 0 2px 8px rgba(0, 0, 0, 0.08);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: width 0.18s ease, height 0.18s ease, transform 0.18s ease;
  animation: spSlideUp 0.25s cubic-bezier(0.2, 0.9, 0.3, 1);
  touch-action: none;
}

.scratchpad-panel.resizing,
.scratchpad-panel.dragging {
  transition: none !important;
  user-select: none !important;
}
.scratchpad-panel.resizing .sp-canvas-wrapper,
.scratchpad-panel.dragging .sp-canvas-wrapper,
.scratchpad-panel.resizing .sp-textarea,
.scratchpad-panel.dragging .sp-textarea {
  pointer-events: none !important;
}

@keyframes spSlideUp {
  from {
    opacity: 0;
    transform: translateY(16px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.scratchpad-panel.minimized {
  height: 48px !important;
  max-height: 48px !important;
  overflow: hidden;
}
.scratchpad-panel.minimized .sp-body,
.scratchpad-panel.minimized .sp-resizer {
  display: none !important;
}

.scratchpad-panel.maximized {
  top: 16px !important;
  bottom: 16px !important;
  left: 16px !important;
  right: 16px !important;
  width: auto !important;
  height: auto !important;
  max-width: none !important;
  max-height: none !important;
  border-radius: var(--radius-md) !important;
}
.scratchpad-panel.maximized .sp-resizer {
  display: none !important;
}

/* 8-Direction Dynamic Resizers */
.sp-resizer {
  position: absolute;
  z-index: 40;
  touch-action: none;
}
.sp-resizer-t {
  top: 0;
  left: 0;
  right: 0;
  height: 8px;
  cursor: ns-resize;
}
.sp-resizer-b {
  bottom: 0;
  left: 0;
  right: 0;
  height: 8px;
  cursor: ns-resize;
}
.sp-resizer-l {
  top: 0;
  bottom: 0;
  left: 0;
  width: 8px;
  cursor: ew-resize;
}
.sp-resizer-r {
  top: 0;
  bottom: 0;
  right: 0;
  width: 8px;
  cursor: ew-resize;
}
.sp-resizer-tl {
  top: 0;
  left: 0;
  width: 20px;
  height: 20px;
  cursor: nwse-resize;
  z-index: 42;
}
.sp-resizer-tr {
  top: 0;
  right: 0;
  width: 20px;
  height: 20px;
  cursor: nesw-resize;
  z-index: 42;
}
.sp-resizer-bl {
  bottom: 0;
  left: 0;
  width: 20px;
  height: 20px;
  cursor: nesw-resize;
  z-index: 42;
}
.sp-resizer-br {
  bottom: 0;
  right: 0;
  width: 20px;
  height: 20px;
  cursor: nwse-resize;
  z-index: 42;
}

/* Visual Corner Grips */
.sp-corner-grip {
  position: absolute;
  width: 12px;
  height: 12px;
  pointer-events: none;
  opacity: 0.6;
  transition: opacity 0.15s ease, border-color 0.15s ease;
}
.sp-resizer:hover .sp-corner-grip,
.scratchpad-panel.resizing .sp-corner-grip {
  opacity: 1;
}
.sp-corner-grip.tl {
  top: 3px;
  left: 3px;
  border-top: 2.5px solid var(--text-secondary);
  border-left: 2.5px solid var(--text-secondary);
  border-top-left-radius: 4px;
}
.sp-corner-grip.br {
  bottom: 3px;
  right: 3px;
  border-bottom: 2.5px solid var(--text-secondary);
  border-right: 2.5px solid var(--text-secondary);
  border-bottom-right-radius: 4px;
}
.sp-resizer:hover .sp-corner-grip.tl,
.sp-resizer:hover .sp-corner-grip.br {
  border-color: var(--primary);
}

/* Mobile Pull Handle */
.sp-mobile-drag-handle {
  display: none;
  width: 100%;
  padding: 6px 0 3px 0;
  cursor: grab;
  touch-action: none;
  text-align: center;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-light);
}
.sp-mobile-drag-handle span {
  display: inline-block;
  width: 44px;
  height: 5px;
  border-radius: 3px;
  background: var(--border-dark);
}

/* Header (Draggable) */
.sp-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.55rem 0.85rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  gap: 0.5rem;
  user-select: none;
  flex-shrink: 0;
  cursor: grab;
}
.scratchpad-panel.dragging .sp-header {
  cursor: grabbing;
}
.sp-drag-indicator {
  font-size: 0.85rem;
  color: #94A3B8;
  margin-right: 2px;
  cursor: grab;
  opacity: 0.7;
}
.sp-header:hover .sp-drag-indicator {
  opacity: 1;
  color: var(--primary);
}
.sp-header-left {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  min-width: 0;
}
.sp-icon {
  font-size: 1rem;
}
.sp-title {
  font-family: var(--font-title);
  font-size: 0.84rem;
  font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Mode Tabs */
.sp-tabs {
  display: flex;
  gap: 0.25rem;
  background: var(--surface);
  padding: 2px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}
.sp-tab-btn {
  border: none;
  background: transparent;
  padding: 0.22rem 0.55rem;
  font-family: var(--font-title);
  font-size: 0.74rem;
  font-weight: 600;
  color: var(--text-secondary);
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}
.sp-tab-btn:hover {
  color: var(--primary);
}
.sp-tab-btn.active {
  background: var(--primary);
  color: #FFFFFF;
}

/* Window Actions */
.sp-window-actions {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}
.sp-win-btn {
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  background: transparent;
  border-radius: 6px;
  font-size: 0.76rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s ease;
}
.sp-win-btn:hover {
  background: var(--surface);
  border-color: var(--border);
  color: var(--text-primary);
}
.sp-win-btn.sp-win-close:hover {
  background: #FEE2E2;
  border-color: #FCA5A5;
  color: #DC2626;
}

/* Body */
.sp-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg);
  min-height: 0;
}

/* Draw View */
.sp-view-draw {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-height: 0;
}

.sp-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.45rem;
  padding: 0.45rem 0.75rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.sp-tool-group {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

/* Color Buttons */
.sp-color-btn {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 2px solid #FFFFFF;
  box-shadow: 0 0 0 1px var(--border);
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  padding: 0;
}
.sp-color-btn:hover {
  transform: scale(1.15);
}
.sp-color-btn.active {
  transform: scale(1.18);
  box-shadow: 0 0 0 2px var(--primary);
}

/* Size Buttons */
.sp-size-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.2rem 0.45rem;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 6px;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s ease;
}
.sp-size-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.sp-size-btn.active {
  background: var(--accent-soft);
  border-color: var(--primary);
  color: var(--primary);
}
.sp-dot {
  display: inline-block;
  background: currentColor;
  border-radius: 50%;
}

/* Action Buttons */
.sp-action-btn {
  padding: 0.22rem 0.5rem;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 6px;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}
.sp-action-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--bg-secondary);
}
.sp-action-btn.active {
  background: #FEF3C7;
  border-color: #F59E0B;
  color: #B45309;
}
.sp-action-btn.sp-action-danger:hover {
  background: #FEE2E2;
  border-color: #F87171;
  color: #DC2626;
}

/* Canvas Wrapper */
.sp-canvas-wrapper {
  flex: 1;
  background: #FFFFFF;
  margin: 0.5rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.04);
  position: relative;
  overflow: hidden;
  touch-action: none;
}
.sp-canvas {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
  cursor: crosshair;
}

/* Type View */
.sp-view-type {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  padding: 0.65rem 0.75rem;
  gap: 0.5rem;
  min-height: 0;
}
.sp-type-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}
.sp-type-hint {
  font-size: 0.75rem;
  color: var(--text-secondary);
  line-height: 1.3;
}
.sp-textarea {
  flex: 1;
  width: 100%;
  padding: 0.75rem;
  font-family: var(--font-body);
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  resize: none;
  outline: none;
  box-shadow: inset 0 1px 3px rgba(0,0,0,0.03);
  box-sizing: border-box;
}
.sp-textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px var(--accent-soft);
}
.sp-type-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.72rem;
  color: var(--text-muted);
}
.sp-station-tag {
  background: var(--bg-secondary);
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  font-weight: 600;
  color: var(--text-secondary);
}

/* Multi-Label Subbar */
.sp-label-subbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.35rem 0.75rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
  scrollbar-width: none;
  flex-shrink: 0;
}
.sp-label-subbar::-webkit-scrollbar {
  display: none;
}
.sp-label-tabs {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}
.sp-label-tab {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.22rem 0.55rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-family: var(--font-title);
  font-size: 0.74rem;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s ease;
}
.sp-label-tab:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.sp-label-tab.active {
  background: #059669;
  border-color: #059669;
  color: #ffffff;
  box-shadow: 0 1px 3px rgba(5, 150, 105, 0.25);
}
.sp-lbl-del {
  border: none;
  background: transparent;
  color: inherit;
  font-size: 0.7rem;
  opacity: 0.7;
  cursor: pointer;
  padding: 0 2px;
  border-radius: 3px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.sp-lbl-del:hover {
  opacity: 1;
  background: rgba(0,0,0,0.15);
}
.sp-label-actions {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  flex-shrink: 0;
}
.sp-label-add-btn {
  border: 1px dashed var(--border);
  background: var(--surface);
  padding: 0.22rem 0.5rem;
  border-radius: 6px;
  font-family: var(--font-title);
  font-size: 0.74rem;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}
.sp-label-add-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--accent-soft);
}
.sp-label-send-btn {
  border: 1px solid #10b981;
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: #ffffff;
  padding: 0.24rem 0.65rem;
  border-radius: 6px;
  font-family: var(--font-title);
  font-size: 0.74rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(16, 185, 129, 0.3);
  transition: all 0.15s ease;
  white-space: nowrap;
}
.sp-label-send-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 10px rgba(16, 185, 129, 0.4);
  background: linear-gradient(135deg, #059669 0%, #047857 100%);
}
.sp-toast {
  position: absolute;
  bottom: 18px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: rgba(15, 23, 42, 0.92);
  backdrop-filter: blur(8px);
  color: #ffffff;
  padding: 0.45rem 0.9rem;
  border-radius: 9999px;
  font-family: var(--font-title);
  font-size: 0.78rem;
  font-weight: 600;
  box-shadow: 0 8px 24px rgba(0,0,0,0.25);
  pointer-events: none;
  opacity: 0;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 100;
  white-space: nowrap;
}
.sp-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* Mobile Responsiveness for Scratchpad */
@media (max-width: 768px) {
  .scratchpad-fab {
    bottom: 16px;
    right: 16px;
    padding: 0.55rem 0.95rem;
    font-size: 0.82rem;
  }
  .scratchpad-panel {
    bottom: 0 !important;
    right: 0 !important;
    left: 0 !important;
    width: 100% !important;
    max-width: 100% !important;
    height: 52vh !important;
    max-height: 94vh !important;
    min-height: 180px !important;
    border-radius: 20px 20px 0 0 !important;
    border-bottom: none !important;
    border-left: none !important;
    border-right: none !important;
    box-shadow: 0 -10px 32px rgba(0, 0, 0, 0.28) !important;
    animation: spSlideUp 0.24s cubic-bezier(0.16, 1, 0.3, 1) !important;
  }
  .sp-mobile-drag-handle {
    display: flex !important;
    align-items: center;
    justify-content: center;
  }
  .sp-resizer {
    display: none !important;
  }
  .sp-drag-indicator {
    display: none;
  }
  .scratchpad-panel.minimized {
    height: 48px !important;
    max-height: 48px !important;
  }
  .scratchpad-panel.maximized {
    top: 0 !important;
    bottom: 0 !important;
    left: 0 !important;
    right: 0 !important;
    height: 94vh !important;
    max-height: 94vh !important;
    border-radius: 20px 20px 0 0 !important;
  }
  .sp-toolbar {
    padding: 0.4rem 0.5rem;
  }
  .sp-tool-group {
    gap: 0.25rem;
  }
}

/* ==========================================================================
   Google Docs Inserted Equations (.doc-equation)
   ========================================================================== */
.doc-equation {
  display: inline-flex;
  align-items: baseline;
  font-family: 'Cambria Math', 'KaTeX_Math', 'Times New Roman', serif, var(--font-body);
  font-style: normal;
  padding: 0.05em 0.25em;
  margin: 0 0.1em;
  background: rgba(37, 99, 235, 0.04);
  border-radius: 4px;
  vertical-align: baseline;
  line-height: 1.2;
  word-break: keep-all;
  white-space: nowrap;
}

[data-theme="dark"] .doc-equation {
  background: rgba(96, 165, 250, 0.08);
}

sup, sub,
.doc-equation sub,
.doc-equation sup {
  font-size: 0.75em;
  line-height: 0;
  position: relative;
  vertical-align: baseline;
}

sup,
.doc-equation sup {
  top: -0.45em;
}

sub,
.doc-equation sub {
  bottom: -0.22em;
}

/* Fractions */
.equation-fraction {
  display: inline-flex;
  flex-direction: column;
  vertical-align: middle;
  text-align: center;
  padding: 0 0.2em;
  font-size: 0.9em;
  line-height: 1;
}

.equation-num {
  border-bottom: 1px solid currentColor;
  padding-bottom: 1px;
}

.equation-denom {
  padding-top: 1px;
}

/* Square root */
.equation-sqrt {
  display: inline-flex;
  align-items: baseline;
}

.equation-radicand {
  border-top: 1px solid currentColor;
  padding-top: 1px;
  margin-left: 1px;
}

@media (max-width: 640px) {
  .doc-equation {
    max-width: 100%;
    overflow-x: auto;
    white-space: normal;
  }
}

@media print {
  .doc-equation {
    background: transparent !important;
    color: #000000 !important;
    font-size: 0.95em !important;
    font-family: 'Cambria Math', 'Times New Roman', serif !important;
    white-space: normal !important;
  }
  .equation-fraction {
    vertical-align: middle !important;
  }
  .equation-num {
    border-bottom: 1px solid #000000 !important;
  }
}


/* ─── Serpentine OSPE Carousel Circuit ─── */
.circuit-station-card {
  flex: 1;
  min-width: 190px;
  max-width: 230px;
  background: var(--bg-primary);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.75rem 0.85rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.82rem;
  position: relative;
  transition: all 0.2s ease;
}
.circuit-station-card:hover {
  border-color: var(--primary);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.12);
}
.circuit-station-card.my-station {
  border-color: var(--primary) !important;
  background: rgba(99, 102, 241, 0.06) !important;
  box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.25) !important;
}
.circuit-station-card.is-rest {
  background: rgba(100, 116, 139, 0.05);
  border-style: dashed;
}
.circuit-arrow-h {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  flex-shrink: 0;
  user-select: none;
}
.circuit-connector-row {
  display: flex;
  margin: 0.2rem 0;
  user-select: none;
}
.circuit-loopback-banner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  margin-top: 0.85rem;
  padding: 0.65rem 1rem;
  background: rgba(99, 102, 241, 0.08);
  border: 1.5px dashed var(--primary);
  border-radius: var(--radius-md);
  color: var(--primary);
  font-weight: 700;
  font-size: 0.84rem;
}

@media (max-width: 680px) {
  .lobby-header-layout {
    grid-template-columns: 1fr !important;
  }
}

/* ─── VDO Link / YouTube Rich Media & Print System (Harmonized Note Integration) ─── */
.youtube-embed-card,
.vdo-embed-card {
  margin: 1rem 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md, 8px);
  overflow: hidden;
  box-shadow: none !important;
  white-space: normal !important;
  display: block !important;
  max-width: 620px;
  transition: border-color 0.15s ease;
}
.youtube-embed-card:hover,
.vdo-embed-card:hover {
  border-color: rgba(99, 102, 241, 0.4);
}
.youtube-card-header,
.drive-card-header {
  display: flex !important;
  justify-content: space-between !important;
  align-items: center !important;
  padding: 0.45rem 0.75rem !important;
  background: rgba(0, 0, 0, 0.02) !important;
  border-bottom: 1px solid var(--border) !important;
  gap: 0.5rem;
  white-space: normal !important;
}
.youtube-card-title {
  display: flex !important;
  align-items: center !important;
  gap: 0.4rem !important;
  font-family: var(--font-title);
  font-size: 0.84rem !important;
  font-weight: 600 !important;
  color: var(--text-secondary) !important;
  white-space: normal !important;
  margin: 0 !important;
  padding: 0 !important;
}
.youtube-icon-badge,
.drive-icon-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  line-height: 1;
  flex-shrink: 0;
}
.youtube-ext-btn {
  font-size: 0.75rem !important;
  font-weight: 600 !important;
  color: var(--text-secondary) !important;
  text-decoration: none !important;
  padding: 0.2rem 0.55rem !important;
  border-radius: 4px !important;
  background: var(--bg-primary) !important;
  border: 1px solid var(--border) !important;
  transition: all 0.15s ease !important;
  white-space: nowrap !important;
  display: inline-flex !important;
  align-items: center !important;
  gap: 0.2rem;
  flex-shrink: 0;
}
.youtube-ext-btn:hover {
  background: var(--surface) !important;
  color: var(--primary) !important;
  border-color: var(--primary) !important;
}
.drive-ext-btn {
  color: var(--text-secondary) !important;
  background: var(--bg-primary) !important;
  border: 1px solid var(--border) !important;
}
.drive-ext-btn:hover {
  color: #2563eb !important;
  border-color: #2563eb !important;
  background: rgba(37, 99, 235, 0.06) !important;
}
.youtube-player-wrapper {
  position: relative;
  width: 100% !important;
  padding-bottom: 56.25% !important; /* 16:9 ratio */
  height: 0 !important;
  background: #090d16;
  overflow: hidden !important;
  display: block !important;
}
.youtube-player-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100% !important;
  height: 100% !important;
  border: 0 !important;
}
.vdo-fallback-card {
  white-space: normal !important;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* YouTube Print Card */
.youtube-print-card,
.vdo-print-card {
  display: none; /* hidden on web screen by default */
  margin: 1rem 0;
  page-break-inside: avoid;
  break-inside: avoid;
  white-space: normal !important;
}
.youtube-print-box {
  border: 1.5px solid #475569;
  border-radius: 8px;
  padding: 10px 14px;
  background: #f8fafc;
}
.youtube-print-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid #cbd5e1;
  padding-bottom: 5px;
  margin-bottom: 8px;
  font-size: 0.88rem;
  color: #1e293b;
}
.youtube-print-body {
  display: flex;
  align-items: center;
  gap: 16px;
}
.youtube-print-qr-wrap {
  flex: 0 0 95px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.youtube-print-qr {
  width: 90px;
  height: 90px;
  border: 1px solid #94a3b8;
  padding: 3px;
  background: #ffffff;
  border-radius: 6px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}
.vdo-print-link-wrap {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.vdo-print-link-title {
  font-size: 0.82rem;
  font-weight: 700;
  color: #334155;
}
.youtube-print-url {
  font-family: var(--font-mono, monospace);
  font-size: 0.82rem;
  font-weight: 600;
  color: #1d4ed8;
  word-break: break-all;
  background: #ffffff;
  padding: 4px 8px;
  border-radius: 4px;
  border: 1px solid #cbd5e1;
  display: inline-block;
}
.youtube-print-scan-hint {
  font-size: 0.72rem;
  color: #64748b;
  font-weight: 600;
  margin-top: 2px;
}

@media print {
  .youtube-embed-card {
    display: none !important;
  }
  .youtube-print-card {
    display: block !important;
    page-break-inside: avoid !important;
    break-inside: avoid !important;
  }
}

/* In Single Case Print Preview Paper on screen */
.print-preview-paper .youtube-embed-card {
  display: none !important;
}
.print-preview-paper .youtube-print-card {
  display: block !important;
}

/* ══════════════════════════════════════════════════════════════
   RESPONSIVE DESIGN SYSTEM (Mobile-First, Fluid & Safe Area)
   ══════════════════════════════════════════════════════════════ */
@supports (padding-top: env(safe-area-inset-top)) {
  .app-shell {
    padding-top: env(safe-area-inset-top, 0px);
    padding-bottom: env(safe-area-inset-bottom, 0px);
    padding-left: env(safe-area-inset-left, 0px);
    padding-right: env(safe-area-inset-right, 0px);
  }
}

/* Smooth Touch Scrolling across viewports (modals & isolated dialogs only) */
.theater-body,
.modal-body {
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-y: contain;
}

/* Mobile Touch Targets & Navigation Adaptations */
@media (max-width: 640px) {
  .topbar-nav-tabs {
    overflow-x: auto;
    max-width: 60vw;
    scrollbar-width: none;
    -ms-overflow-style: none;
    padding-bottom: 2px;
  }
  .topbar-nav-tabs::-webkit-scrollbar {
    display: none;
  }
  .topbar-nav-tab {
    padding: 6px 10px;
    font-size: 12px;
    white-space: nowrap;
    min-height: 40px;
  }
  .btn, .icon-btn, .back-btn {
    min-height: 44px;
  }
}

/* ══════════════════════════════════════════════════════════════
   MODERN LOBBY & MULTIPLAYER DESIGN SYSTEM (Impeccable Minimal)
   ══════════════════════════════════════════════════════════════ */
.lobby-waiting-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  max-width: 960px;
  margin: 0 auto 2rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
}

.lobby-main-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 1.25rem;
  margin-top: 1.25rem;
  text-align: left;
  align-items: start;
}

@media (max-width: 768px) {
  .lobby-main-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
}

.lobby-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.9rem 1rem;
  transition: var(--transition);
}

.lobby-box-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.lobby-code-box {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius-md);
  padding: 1rem;
  text-align: center;
}

.lobby-code-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.15rem;
}

.lobby-code-digits {
  font-family: var(--font-mono);
  font-size: 2.85rem;
  font-weight: 800;
  letter-spacing: 0.35rem;
  color: var(--primary);
  line-height: 1.05;
  margin: 0.25rem 0 0.5rem;
  text-shadow: 0 2px 8px rgba(99, 102, 241, 0.15);
}

.lobby-code-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.lobby-code-copy {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: var(--surface);
  border: 1px solid var(--border);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0.3rem 0.65rem;
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
}
.lobby-code-copy:hover {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.lobby-code-fullscreen-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: var(--primary);
  border: 1px solid var(--primary);
  font-size: 0.75rem;
  font-weight: 600;
  color: #ffffff;
  cursor: pointer;
  padding: 0.3rem 0.65rem;
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
  box-shadow: 0 2px 6px rgba(99, 102, 241, 0.25);
}
.lobby-code-fullscreen-btn:hover {
  opacity: 0.92;
  transform: translateY(-1px);
}

.lobby-seg-control {
  display: flex;
  background: var(--bg-secondary);
  padding: 3px;
  border-radius: var(--radius-sm);
  gap: 2px;
}

.lobby-seg-btn {
  flex: 1;
  padding: 0.4rem 0.6rem;
  font-size: 0.78rem;
  font-weight: 600;
  border: none;
  border-radius: 6px;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
}

.lobby-seg-btn.active {
  background: var(--surface);
  color: var(--text-primary);
  font-weight: 700;
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}

.lobby-members-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.9rem 1rem;
  display: flex;
  flex-direction: column;
  min-height: auto;
}

.lobby-members-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 0.5rem;
  margin-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.lobby-member-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.45rem 0.65rem;
  background: #f8fafc;
  border: 1px solid #f1f5f9;
  border-radius: var(--radius-sm);
  margin-bottom: 0.35rem;
  font-size: 0.82rem;
}

.lobby-breakout-card {
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1rem 1.15rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
  transition: var(--transition);
}

.lobby-breakout-card:hover {
  border-color: var(--primary-light, #93c5fd);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}

.lobby-breakout-card.is-active {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.2);
}

.scratchpad-fab {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 900;
  background: #0f172a;
  color: #f8fafc;
  border: 1px solid rgba(255,255,255,0.1);
  padding: 0.55rem 1rem;
  border-radius: 9999px;
  font-size: 0.82rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  box-shadow: 0 4px 14px rgba(0,0,0,0.18);
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease;
}
.scratchpad-fab:hover {
  transform: translateY(-2px);
  background: #1e293b;
  color: #ffffff;
}

/* ══════════════════════════════════════════════════
   BACKGROUND MUSIC PLAYER (ดนตรีให้กำลังใจม่วนๆ)
   ══════════════════════════════════════════════════ */
.ple-bgm-pill {
  display: none;
  position: fixed;
  bottom: 24px;
  left: 24px;
  z-index: 900;
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
  border-radius: 9999px;
  padding: 0.35rem 0.65rem 0.35rem 0.45rem;
  align-items: center;
  gap: 0.5rem;
  font-family: inherit;
  backdrop-filter: blur(8px);
  transition: all 0.2s ease;
  user-select: none;
}

.ple-bgm-pill.is-visible {
  display: flex !important;
}

.ple-bgm-pill:hover {
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.16);
  border-color: var(--primary-light, #93c5fd);
}

.ple-bgm-pill.is-playing {
  border-color: #10b981;
  background: #f0fdf4;
}

.ple-bgm-inner {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.ple-bgm-toggle-btn {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: none;
  background: #e2e8f0;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  position: relative;
  transition: transform 0.15s ease, background 0.15s ease;
}

.ple-bgm-toggle-btn:hover {
  transform: scale(1.05);
}

.ple-bgm-pill.is-playing .ple-bgm-toggle-btn {
  background: linear-gradient(135deg, #10b981, #059669);
  color: white;
  box-shadow: 0 2px 8px rgba(16, 185, 129, 0.35);
}

.ple-bgm-waves {
  display: none;
  align-items: flex-end;
  gap: 2px;
  height: 12px;
  position: absolute;
  right: -2px;
  bottom: 0px;
}

.ple-bgm-pill.is-playing .ple-bgm-waves {
  display: flex;
}

.ple-bgm-waves span {
  display: block;
  width: 3px;
  height: 100%;
  background: #10b981;
  border-radius: 2px;
  animation: bgmEqualizer 0.8s ease-in-out infinite alternate;
}

.ple-bgm-waves span:nth-child(1) { animation-delay: 0.1s; height: 60%; }
.ple-bgm-waves span:nth-child(2) { animation-delay: 0.3s; height: 100%; }
.ple-bgm-waves span:nth-child(3) { animation-delay: 0.2s; height: 80%; }

@keyframes bgmEqualizer {
  0% { transform: scaleY(0.3); }
  100% { transform: scaleY(1); }
}

.ple-bgm-info {
  display: flex;
  flex-direction: column;
  cursor: pointer;
  padding: 0 0.25rem;
  max-width: 140px;
}

.ple-bgm-title {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.2;
}

.ple-bgm-status {
  font-size: 0.68rem;
  color: var(--text-secondary);
  white-space: nowrap;
  line-height: 1.1;
}

.ple-bgm-next-btn {
  background: transparent;
  border: none;
  font-size: 0.82rem;
  padding: 0.2rem 0.3rem;
  cursor: pointer;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.15s ease, background 0.15s ease;
}

.ple-bgm-next-btn:hover {
  background: #e2e8f0;
  transform: scale(1.1);
}

.ple-bgm-vol-wrap {
  display: flex;
  align-items: center;
  padding-right: 0.25rem;
}

.ple-bgm-slider {
  width: 55px;
  height: 4px;
  accent-color: #10b981;
  cursor: pointer;
}

.ple-bgm-close-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 0.85rem;
  width: 24px;
  height: 24px;
  padding: 0;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s ease, color 0.15s ease, transform 0.15s ease;
  flex-shrink: 0;
}

.ple-bgm-close-btn:hover {
  background: #e2e8f0;
  color: var(--text-primary);
  transform: scale(1.1);
}

.ple-bgm-close-btn:active {
  transform: scale(0.92);
}

.ple-bgm-pill.is-minimized .ple-bgm-info,
.ple-bgm-pill.is-minimized .ple-bgm-next-btn,
.ple-bgm-pill.is-minimized .ple-bgm-vol-wrap,
.ple-bgm-pill.is-minimized .ple-bgm-close-btn {
  display: none;
}

.ple-bgm-pill.is-minimized {
  padding: 0.25rem;
}

.topbar-bgm-icon-btn.is-active-music {
  color: #10b981 !important;
  background: rgba(16, 185, 129, 0.12) !important;
  border-color: rgba(16, 185, 129, 0.3) !important;
}

@media (max-width: 640px) {
  .ple-bgm-pill {
    bottom: 16px;
    left: 16px;
  }
  .ple-bgm-info {
    max-width: 100px;
  }
  .ple-bgm-slider {
    width: 42px;
  }
}

/* ══════════════════════════════════════════════════════════════
   INTERACTIVE FILL-IN-THE-BLANK & LIVE EXAM STYLES
   ══════════════════════════════════════════════════════════════ */
.interactive-blank-wrapper {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin: 0.2rem 0.35rem;
  vertical-align: middle;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.15rem 0.35rem;
  transition: all 0.2s ease;
}

.interactive-blank-wrapper:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.18);
}

.interactive-blank-wrapper.is-correct {
  border-color: #10b981;
  background: rgba(16, 185, 129, 0.06);
}

.interactive-blank-wrapper.is-wrong {
  border-color: #ef4444;
  background: rgba(239, 68, 68, 0.05);
}

.interactive-blank-input {
  border: none;
  background: transparent;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.25rem 0.4rem;
  min-width: 160px;
  outline: none;
}

.interactive-blank-input::placeholder {
  color: var(--text-muted);
  font-weight: normal;
  font-size: 0.82rem;
}

.btn-check-blank {
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 4px;
  font-family: var(--font-title);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.55rem;
  cursor: pointer;
  transition: all 0.15s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.2rem;
  user-select: none;
  flex-shrink: 0;
}

.btn-check-blank:hover {
  filter: brightness(1.1);
  transform: scale(1.02);
}

.btn-check-blank:active {
  transform: scale(0.98);
}

.blank-status-badge {
  display: none;
  font-size: 0.76rem;
  font-weight: 700;
  border-radius: 4px;
  padding: 0.15rem 0.4rem;
  white-space: nowrap;
}

.blank-status-badge.is-correct {
  color: #065f46;
  background: #d1fae5;
  border: 1px solid #a7f3d0;
}

.blank-status-badge.is-wrong {
  color: #991b1b;
  background: #fee2e2;
  border: 1px solid #fecaca;
}

.blank-status-badge.is-empty {
  color: #92400e;
  background: #fef3c7;
  border: 1px solid #fde68a;
}

.interactive-blank-examiner-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.3);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
  color: var(--primary);
  font-size: 0.85rem;
  margin: 0.2rem 0.3rem;
  vertical-align: middle;
}

.interactive-blank-examiner-badge strong {
  color: var(--text-primary);
}

.blank-score-label {
  font-size: 0.76rem;
  color: var(--text-muted);
  font-weight: 600;
}

.examiner-live-submission-panel {
  animation: fadeIn 0.2s ease;
}



/* ══════════════════════════════════════════════════════════════
   MOBILE FLOATING POPUP / DRAWER NAVIGATION & ICON POLISH
   ══════════════════════════════════════════════════════════════ */
.mobile-nav-toggle-btn {
  display: none;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--ink);
  align-items: center;
  justify-content: center;
  font-size: 16px;
  cursor: pointer;
  transition: var(--transition);
  flex-shrink: 0;
}

.mobile-nav-toggle-btn:hover {
  background: var(--clinic-soft);
  color: var(--clinic);
  border-color: var(--clinic);
}

.mobile-nav-drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(4px);
  z-index: 9998;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.mobile-nav-drawer-overlay.show {
  opacity: 1;
  visibility: visible;
}

.mobile-nav-drawer {
  position: fixed;
  top: 0;
  right: -300px;
  width: 280px;
  max-width: 85vw;
  height: 100%;
  height: 100dvh;
  background: var(--surface);
  border-left: 1px solid var(--border);
  box-shadow: -8px 0 30px rgba(0, 0, 0, 0.15);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  transition: right 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  padding: 1.25rem;
}

.mobile-nav-drawer.show {
  right: 0;
}

.mobile-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1rem;
}

.mobile-drawer-title {
  font-family: var(--font-title);
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.mobile-drawer-close {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 1rem;
}

.mobile-drawer-nav-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex: 1;
  overflow-y: auto;
}

.mobile-drawer-item {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  color: var(--text-primary);
  text-decoration: none;
  font-family: var(--font-title);
  font-size: 0.95rem;
  font-weight: 600;
  background: var(--bg-primary);
  border: 1px solid transparent;
  transition: all 0.15s ease;
}

.mobile-drawer-item:hover {
  background: var(--clinic-soft);
  color: var(--clinic);
  border-color: var(--clinic-border);
}

.mobile-drawer-item.active {
  background: var(--clinic-soft);
  color: var(--clinic);
  border-color: var(--clinic-border);
  font-weight: 700;
}

.mobile-drawer-icon {
  font-size: 1.25rem;
  width: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
}

@media (max-width: 860px) {
  .topbar-nav-tabs {
    display: none !important;
  }
  .mobile-nav-toggle-btn {
    display: inline-flex !important;
  }
  .topbar-logo-text {
    max-width: 140px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 0.88rem;
  }
  .topbar {
    padding: 8px 12px;
  }
}

@media (max-width: 640px) {
  .topbar {
    padding: 6px 10px !important;
    min-height: 48px !important;
    gap: 8px !important;
  }
  .topbar .titles {
    padding: 0 4px !important;
  }
  .topbar .app-name {
    font-size: 0.88rem !important;
    max-width: 140px !important;
  }
  .topbar .app-sub {
    display: none !important; /* Hide long subtitle on mobile to avoid vertical text clutter */
  }
  .topbar-left .back-btn {
    padding: 4px 8px !important;
    font-size: 0.82rem !important;
  }
  .topbar-right {
    gap: 4px !important;
  }
  .topbar-right .icon-btn[href="handbook-library.html"],
  .topbar-right .icon-btn[href="video-library.html"] {
    display: none !important; /* Hide secondary links on narrow screens */
  }
}

@media (max-width: 400px) {
  .topbar .app-name {
    max-width: 105px !important;
    font-size: 0.82rem !important;
  }
  .topbar-left .back-btn {
    padding: 3px 6px !important;
    font-size: 0.78rem !important;
  }
}

/* ============================================================
   AI Auto-Checklist Visual Styles (Distinct from Manual Checked)
   ============================================================ */
.checklist-item.ai-checked {
  background: rgba(14, 165, 233, 0.08) !important;
  border-left: 3.5px solid #0ea5e9 !important;
  position: relative;
}

.checklist-item.ai-checked .checkbox-custom {
  background: #0ea5e9 !important;
  border-color: #0284c7 !important;
}

.checklist-item.ai-checked::after {
  content: "🤖";
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.8rem;
  opacity: 0.8;
  pointer-events: none;
}

#btn-auto-checklist-toggle.active {
  background: #0ea5e9 !important;
  color: #ffffff !important;
  border-color: #0284c7 !important;
  box-shadow: 0 0 8px rgba(14, 165, 233, 0.4);
}

@keyframes stChatToastSlide {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}