/* ═══════════════════════════════════════════════════════════════════════════
   CritPharm Academy 2025 — Full Design System
   ICU Medical Academy Color System + Educational UI Components
   ═══════════════════════════════════════════════════════════════════════════ */

/* ── CSS Variables ─────────────────────────────────────────────────────────── */
:root {
  /* Primary palette - ICU blue */
  --primary: #1a56db;
  --primary-dark: #1041b2;
  --primary-light: #3f83f8;
  --primary-pale: #e8f0fe;

  /* Secondary - medical teal */
  --secondary: #0694a2;
  --secondary-dark: #047481;
  --secondary-light: #7edce2;

  /* Accent colors */
  --success: #0e9f6e;
  --success-light: #d1fae5;
  --warning: #e3a008;
  --warning-light: #fef3c7;
  --danger: #e02424;
  --danger-light: #fde8e8;
  --purple: #7e3af2;
  --purple-light: #edebff;

  /* Mastery colors */
  --mastery-gold: #f59e0b;
  --mastery-gold-light: #fffbeb;
  --xp-color: #8b5cf6;

  /* Neutral palette */
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  /* Border radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 10px 10px -5px rgba(0,0,0,0.04);
  --shadow-glow: 0 0 20px rgba(26,86,219,0.3);

  /* Transitions */
  --transition: all 0.2s cubic-bezier(0.4,0,0.2,1);
  --transition-slow: all 0.4s cubic-bezier(0.4,0,0.2,1);
}

/* ── Base Reset ────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-sans);
  background: var(--gray-50);
  color: var(--gray-800);
  line-height: 1.6;
  min-height: 100vh;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; }
button { cursor: pointer; font-family: inherit; }
ul { list-style: none; }

/* ── Safety Banner ──────────────────────────────────────────────────────────── */
.safety-banner {
  background: linear-gradient(135deg, #7e1d1d, #991b1b);
  color: white;
  padding: 10px var(--space-lg);
  text-align: center;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  position: sticky;
  top: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border-bottom: 2px solid rgba(255,255,255,0.2);
}

/* ── Navbar ─────────────────────────────────────────────────────────────────── */
.navbar {
  background: white;
  border-bottom: 1px solid var(--gray-200);
  position: sticky;
  top: 36px;
  z-index: 999;
  box-shadow: var(--shadow);
}
.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  gap: var(--space-md);
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}
.brand-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1rem;
  box-shadow: var(--shadow-md);
}
.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.brand-name {
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--gray-900);
  letter-spacing: -0.02em;
}
.brand-year {
  font-size: 0.65rem;
  color: var(--primary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  flex-wrap: nowrap;
  overflow-x: auto;
}
.nav-link {
  padding: 0.375rem 0.65rem;
  border-radius: var(--radius-md);
  color: var(--gray-600);
  font-size: 0.825rem;
  font-weight: 500;
  white-space: nowrap;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 0.35rem;
  text-decoration: none;
}
.nav-link:hover { background: var(--gray-100); color: var(--gray-900); text-decoration: none; }
.nav-link.active { background: var(--primary-pale); color: var(--primary); font-weight: 600; }
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  padding: 0.5rem;
  color: var(--gray-600);
}

/* ── Sections ───────────────────────────────────────────────────────────────── */
.section { display: none; animation: fadeIn 0.3s ease; }
.section.active { display: block; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
.section-container {
  max-width: 1300px;
  margin: 0 auto;
  padding: var(--space-2xl) var(--space-lg);
}
.section-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}
.section-title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}
.section-subtitle {
  font-size: 1.05rem;
  color: var(--gray-500);
  max-width: 600px;
  margin: 0 auto;
}

/* ── Hero Section ───────────────────────────────────────────────────────────── */
.hero {
  background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 50%, #1a56db 100%);
  color: white;
  padding: var(--space-3xl) var(--space-lg);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
  min-height: 560px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 60%;
  height: 200%;
  background: radial-gradient(ellipse, rgba(255,255,255,0.05) 0%, transparent 70%);
  pointer-events: none;
}
.hero-content { position: relative; z-index: 1; max-width: 620px; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255,255,255,0.15);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.2);
  padding: 0.4rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: var(--space-lg);
  color: rgba(255,255,255,0.9);
}
.hero-title {
  font-size: 3.2rem;
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-lg);
}
.hero-highlight {
  background: linear-gradient(90deg, #93c5fd, #6ee7f7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: 1.05rem;
  opacity: 0.85;
  margin-bottom: var(--space-xl);
  line-height: 1.7;
}
.hero-stats {
  display: flex;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
  flex-wrap: wrap;
}
.stat { text-align: center; }
.stat-num {
  display: block;
  font-size: 2rem;
  font-weight: 900;
  color: #93c5fd;
  letter-spacing: -0.02em;
  line-height: 1;
}
.stat-label {
  display: block;
  font-size: 0.7rem;
  opacity: 0.7;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 0.2rem;
}
.hero-actions {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

/* ── Buttons ────────────────────────────────────────────────────────────────── */
.btn-primary {
  background: white;
  color: var(--primary-dark);
  border: 2px solid white;
  padding: 0.7rem 1.5rem;
  border-radius: var(--radius-lg);
  font-weight: 700;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition);
  box-shadow: var(--shadow-md);
}
.btn-primary:hover {
  background: #f0f7ff;
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}
.btn-secondary {
  background: rgba(255,255,255,0.15);
  color: white;
  border: 2px solid rgba(255,255,255,0.4);
  padding: 0.7rem 1.5rem;
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition);
  backdrop-filter: blur(8px);
}
.btn-secondary:hover {
  background: rgba(255,255,255,0.25);
  transform: translateY(-1px);
}
.btn-outline {
  background: transparent;
  color: rgba(255,255,255,0.8);
  border: 2px solid rgba(255,255,255,0.3);
  padding: 0.7rem 1.5rem;
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition);
}
.btn-outline:hover { border-color: rgba(255,255,255,0.6); color: white; }
.btn-success {
  background: var(--success);
  color: white;
  border: none;
  padding: 0.7rem 1.5rem;
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition);
}
.btn-success:hover { background: #047857; transform: translateY(-1px); }
.back-btn {
  background: var(--gray-100);
  color: var(--gray-700);
  border: 1px solid var(--gray-200);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  font-weight: 500;
  font-size: 0.875rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: var(--transition);
  margin-bottom: var(--space-lg);
}
.back-btn:hover { background: var(--gray-200); }

/* ── Hero Visual ────────────────────────────────────────────────────────────── */
.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 400px;
}
.pulse-ring {
  position: absolute;
  width: 300px;
  height: 300px;
  border: 2px solid rgba(147,197,253,0.3);
  border-radius: 50%;
  animation: pulse-ring 3s ease-in-out infinite;
}
.pulse-ring::after {
  content: '';
  position: absolute;
  inset: -20px;
  border: 2px solid rgba(147,197,253,0.15);
  border-radius: 50%;
  animation: pulse-ring 3s ease-in-out infinite 1s;
}
@keyframes pulse-ring {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.05); opacity: 0.7; }
}
.hero-icon-wrap {
  width: 120px;
  height: 120px;
  background: rgba(255,255,255,0.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(10px);
  z-index: 1;
}
.hero-icon { font-size: 3.5rem; color: rgba(255,255,255,0.9); }
.floating-cards {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.float-card {
  position: absolute;
  background: rgba(255,255,255,0.12);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-xl);
  padding: 0.6rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: white;
  white-space: nowrap;
}
.float-1 { top: 15%; left: 5%; animation: float-anim 4s ease-in-out infinite; }
.float-2 { top: 15%; right: 5%; animation: float-anim 4s ease-in-out infinite 1s; }
.float-3 { bottom: 20%; left: 5%; animation: float-anim 4s ease-in-out infinite 2s; }
.float-4 { bottom: 20%; right: 5%; animation: float-anim 4s ease-in-out infinite 3s; }
@keyframes float-anim {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* ── Module Filters ──────────────────────────────────────────────────────────── */
.module-filter {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: var(--space-md);
}
.filter-btn {
  background: white;
  color: var(--gray-600);
  border: 1px solid var(--gray-200);
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 500;
  transition: var(--transition);
}
.filter-btn:hover, .filter-btn.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

/* ── Modules Grid ────────────────────────────────────────────────────────────── */
.modules-grid, .modules-preview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-lg);
}
.module-card {
  background: white;
  border-radius: var(--radius-xl);
  border: 1px solid var(--gray-200);
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
  box-shadow: var(--shadow);
  position: relative;
}
.module-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-light);
}
.module-card-header {
  padding: 1.2rem;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  position: relative;
}
.module-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.2rem;
  flex-shrink: 0;
}
.module-card-info { flex: 1; min-width: 0; }
.module-card-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 0.2rem;
  line-height: 1.3;
}
.module-card-subtitle {
  font-size: 0.75rem;
  color: var(--gray-500);
  line-height: 1.4;
}
.module-card-body { padding: 0 1.2rem 1.2rem; }
.module-card-preview { font-size: 0.8rem; color: var(--gray-600); line-height: 1.5; margin-bottom: 0.75rem; }
.module-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.75rem;
  border-top: 1px solid var(--gray-100);
}
.module-card-tag {
  font-size: 0.7rem;
  color: var(--gray-500);
  font-weight: 500;
}
.module-card-arrow {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  transition: var(--transition);
}
.module-card:hover .module-card-arrow {
  transform: translateX(3px);
}
.module-mastery-badge {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  background: var(--mastery-gold);
  color: white;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-full);
  font-size: 0.65rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

/* ── Module Detail ──────────────────────────────────────────────────────────── */
.module-detail-header {
  background: linear-gradient(135deg, #1e3a8a, #1a56db);
  color: white;
  padding: var(--space-2xl);
  border-radius: var(--radius-2xl);
  margin-bottom: var(--space-2xl);
  position: relative;
  overflow: hidden;
}
.module-detail-header::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -10%;
  width: 50%;
  height: 200%;
  background: radial-gradient(ellipse, rgba(255,255,255,0.08) 0%, transparent 70%);
}
.module-detail-title { font-size: 2rem; font-weight: 800; margin-bottom: 0.5rem; }
.module-detail-subtitle { opacity: 0.8; font-size: 1rem; margin-bottom: var(--space-lg); }
.module-detail-meta { display: flex; gap: var(--space-lg); flex-wrap: wrap; }
.module-detail-meta-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  opacity: 0.85;
}

.module-content-tabs {
  display: flex;
  gap: 0.5rem;
  border-bottom: 2px solid var(--gray-200);
  margin-bottom: var(--space-xl);
  overflow-x: auto;
}
.tab-btn {
  background: none;
  border: none;
  padding: 0.75rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--gray-500);
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  white-space: nowrap;
  transition: var(--transition);
}
.tab-btn:hover { color: var(--gray-900); }
.tab-btn.active { color: var(--primary); border-bottom-color: var(--primary); }

.tab-content { display: none; animation: fadeIn 0.2s ease; }
.tab-content.active { display: block; }

/* Key Points List */
.key-points-list { display: flex; flex-direction: column; gap: 0.75rem; }
.key-point-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 1rem;
  background: white;
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-100);
  transition: var(--transition);
}
.key-point-item:hover { border-color: var(--primary-light); background: var(--primary-pale); }
.key-point-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--primary-pale);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 0.1rem;
}
.key-point-text { font-size: 0.875rem; color: var(--gray-700); line-height: 1.6; }

/* Protocol Steps */
.protocol-steps { display: flex; flex-direction: column; gap: 1rem; }
.protocol-step {
  background: white;
  border-left: 4px solid var(--primary);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  padding: 1rem 1.25rem;
  box-shadow: var(--shadow-sm);
}
.protocol-step-title {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 0.3rem;
}
.protocol-step-content { font-size: 0.825rem; color: var(--gray-600); line-height: 1.6; }

/* Medications Table */
.medications-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}
.medications-table th {
  background: var(--gray-100);
  padding: 0.75rem 1rem;
  text-align: left;
  font-weight: 700;
  color: var(--gray-700);
  border-bottom: 2px solid var(--gray-200);
}
.medications-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--gray-100);
  color: var(--gray-700);
  vertical-align: top;
}
.medications-table tr:hover td { background: var(--primary-pale); }
.drug-name { font-weight: 600; color: var(--primary); }
.drug-dose { font-family: var(--font-mono); font-size: 0.8rem; color: var(--gray-600); }

/* Mnemonic Cards */
.mnemonic-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1rem; }
.mnemonic-card {
  background: linear-gradient(135deg, var(--purple) 0%, #5521b5 100%);
  color: white;
  border-radius: var(--radius-xl);
  padding: 1.5rem;
}
.mnemonic-card-text { font-size: 0.9rem; font-weight: 600; line-height: 1.6; }

/* ── Dashboard Styles ────────────────────────────────────────────────────────── */
.dashboard-hero {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}
.dash-stat-card {
  background: white;
  border-radius: var(--radius-xl);
  border: 1px solid var(--gray-200);
  padding: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.dash-stat-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.xp-card { border-color: var(--xp-color); }
.mastery-card { border-color: var(--mastery-gold); }
.dash-stat-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-lg);
  background: var(--primary-pale);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}
.xp-card .dash-stat-icon { background: #ede9fe; color: var(--xp-color); }
.mastery-card .dash-stat-icon { background: var(--mastery-gold-light); color: var(--mastery-gold); }
.dash-stat-num {
  font-size: 2rem;
  font-weight: 900;
  color: var(--gray-900);
  line-height: 1;
  margin-bottom: 0.25rem;
}
.dash-stat-label { font-size: 0.8rem; color: var(--gray-500); font-weight: 500; }

.progress-overview {
  background: white;
  border-radius: var(--radius-xl);
  border: 1px solid var(--gray-200);
  padding: 1.5rem;
  margin-bottom: var(--space-xl);
  box-shadow: var(--shadow);
}
.progress-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 0.75rem;
}
.progress-bar-outer {
  height: 12px;
  background: var(--gray-100);
  border-radius: var(--radius-full);
  overflow: hidden;
}
.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: var(--radius-full);
  transition: width 0.6s cubic-bezier(0.4,0,0.2,1);
}

.dash-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}
@media (max-width: 900px) { .dash-grid-2 { grid-template-columns: 1fr; } }

.dash-card {
  background: white;
  border-radius: var(--radius-xl);
  border: 1px solid var(--gray-200);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}
.dash-card-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.module-progress-list { display: flex; flex-direction: column; gap: 0.6rem; max-height: 380px; overflow-y: auto; }
.module-progress-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 0.75rem;
  border-radius: var(--radius-md);
  background: var(--gray-50);
  font-size: 0.8rem;
}
.module-progress-indicator {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--gray-300);
  flex-shrink: 0;
}
.module-progress-indicator.viewed { background: var(--warning); }
.module-progress-indicator.mastered { background: var(--success); }
.module-progress-name { flex: 1; font-weight: 500; color: var(--gray-700); }
.module-progress-score {
  font-weight: 700;
  font-size: 0.75rem;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-full);
}
.score-mastery { background: var(--success-light); color: #065f46; }
.score-partial { background: var(--warning-light); color: #92400e; }
.score-none { background: var(--gray-100); color: var(--gray-500); }

.competency-domains { display: flex; flex-direction: column; gap: 1rem; }
.competency-domain-item { display: flex; align-items: center; gap: 0.75rem; }
.domain-label {
  width: 180px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--gray-700);
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-shrink: 0;
}
.domain-bar {
  flex: 1;
  height: 8px;
  background: var(--gray-100);
  border-radius: var(--radius-full);
  overflow: hidden;
}
.domain-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  border-radius: var(--radius-full);
  transition: width 0.6s ease;
}
.cr-fill { background: linear-gradient(90deg, var(--success), #34d399); }
.dm-fill { background: linear-gradient(90deg, var(--purple), #a78bfa); }
.sk-fill { background: linear-gradient(90deg, var(--secondary), #67e8f9); }
.pp-fill { background: linear-gradient(90deg, var(--warning), #fbbf24); }
.domain-pct { font-size: 0.75rem; font-weight: 700; color: var(--gray-600); width: 35px; text-align: right; }

.mastery-info-box {
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  border-radius: var(--radius-lg);
  padding: 0.75rem;
  font-size: 0.8rem;
  color: #1e40af;
  margin-top: 1rem;
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  line-height: 1.5;
}

.learning-path { display: flex; flex-direction: column; gap: 1rem; }
.path-step {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-200);
}
.path-number {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--primary);
  color: white;
  font-weight: 800;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.path-content { flex: 1; }
.path-content strong { display: block; font-size: 0.9rem; color: var(--gray-900); margin-bottom: 0.25rem; }
.path-content p { font-size: 0.8rem; color: var(--gray-600); }
.path-btn {
  background: var(--primary);
  color: white;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.8rem;
  font-weight: 600;
  white-space: nowrap;
}
.path-btn:hover { background: var(--primary-dark); }

/* ── Simulation Styles ──────────────────────────────────────────────────────── */
.sim-disclaimer {
  background: #fffbeb;
  border: 1px solid #fcd34d;
  border-radius: var(--radius-lg);
  padding: 0.875rem 1.25rem;
  font-size: 0.875rem;
  color: #92400e;
  margin-bottom: var(--space-xl);
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.sim-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-lg);
}
.sim-card {
  background: white;
  border-radius: var(--radius-xl);
  border: 1px solid var(--gray-200);
  overflow: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow);
  cursor: pointer;
}
.sim-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-xl); border-color: var(--primary-light); }
.sim-card-header {
  background: linear-gradient(135deg, #1e3a8a, var(--primary));
  color: white;
  padding: 1.5rem;
  position: relative;
  overflow: hidden;
}
.sim-card-header::after {
  content: '';
  position: absolute;
  top: -20px;
  right: -20px;
  width: 80px;
  height: 80px;
  background: rgba(255,255,255,0.1);
  border-radius: 50%;
}
.sim-card-icon { font-size: 2.2rem; margin-bottom: 0.75rem; }
.sim-card-title { font-size: 1rem; font-weight: 800; margin-bottom: 0.3rem; }
.sim-card-module { font-size: 0.75rem; opacity: 0.75; }
.sim-card-body { padding: 1.25rem; }
.sim-card-desc { font-size: 0.825rem; color: var(--gray-600); line-height: 1.6; margin-bottom: 1rem; }
.sim-card-meta {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}
.sim-tag {
  background: var(--gray-100);
  color: var(--gray-600);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  font-size: 0.7rem;
  font-weight: 600;
}
.sim-tag.difficulty-advanced { background: #fef3c7; color: #92400e; }
.sim-tag.difficulty-expert { background: #fde8e8; color: #991b1b; }
.sim-tag.difficulty-intermediate { background: #d1fae5; color: #065f46; }
.sim-start-btn {
  width: 100%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  border: none;
  padding: 0.7rem;
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: 0.875rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: var(--transition);
}
.sim-start-btn:hover { transform: translateY(-1px); box-shadow: var(--shadow-md); }

/* Simulation active */
.sim-content-area {
  background: white;
  border-radius: var(--radius-xl);
  border: 1px solid var(--gray-200);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.sim-header {
  background: linear-gradient(135deg, #1e3a8a, var(--primary));
  color: white;
  padding: 1.5rem 2rem;
}
.sim-header h2 { font-size: 1.4rem; font-weight: 800; margin-bottom: 0.25rem; }
.sim-header p { opacity: 0.8; font-size: 0.875rem; }
.sim-step-progress {
  padding: 1rem 2rem;
  background: var(--gray-50);
  border-bottom: 1px solid var(--gray-200);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.sim-step-dot {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2px solid var(--gray-300);
  background: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--gray-400);
  transition: var(--transition);
}
.sim-step-dot.active { border-color: var(--primary); background: var(--primary); color: white; }
.sim-step-dot.done { border-color: var(--success); background: var(--success); color: white; }
.sim-step-line { flex: 1; height: 2px; background: var(--gray-200); }
.sim-step-line.done { background: var(--success); }

.sim-step-body { padding: 2rem; }
.sim-step-type {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--primary-pale);
  color: var(--primary);
  padding: 0.3rem 0.7rem;
  border-radius: var(--radius-full);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}
.sim-step-prompt {
  font-size: 1rem;
  font-weight: 600;
  color: var(--gray-900);
  line-height: 1.6;
  margin-bottom: 1.5rem;
  background: var(--gray-50);
  border-left: 4px solid var(--primary);
  padding: 1rem 1.25rem;
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
}
.sim-options { display: flex; flex-direction: column; gap: 0.75rem; margin-bottom: 1.5rem; }
.sim-option {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-lg);
  border: 2px solid var(--gray-200);
  cursor: pointer;
  transition: var(--transition);
  background: white;
  text-align: left;
  width: 100%;
}
.sim-option:hover { border-color: var(--primary-light); background: var(--primary-pale); }
.sim-option.selected-optimal { border-color: var(--success); background: var(--success-light); }
.sim-option.selected-suboptimal { border-color: var(--warning); background: var(--warning-light); }
.sim-option.selected-wrong { border-color: var(--danger); background: var(--danger-light); }
.sim-option.revealed-optimal { border-color: var(--success); background: var(--success-light); }
.sim-option-letter {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--gray-100);
  color: var(--gray-600);
  font-weight: 700;
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.sim-option-text { font-size: 0.875rem; color: var(--gray-700); line-height: 1.5; }
.sim-feedback-box {
  margin-top: 1rem;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-lg);
  font-size: 0.875rem;
  line-height: 1.6;
  display: none;
}
.sim-feedback-box.show { display: block; }
.sim-feedback-box.optimal { background: var(--success-light); color: #065f46; border-left: 4px solid var(--success); }
.sim-feedback-box.suboptimal { background: var(--warning-light); color: #92400e; border-left: 4px solid var(--warning); }

.sim-clinical-pearl {
  background: linear-gradient(135deg, #ede9fe, #ddd6fe);
  border: 1px solid #c4b5fd;
  border-radius: var(--radius-lg);
  padding: 1rem 1.25rem;
  font-size: 0.85rem;
  color: #5b21b6;
  line-height: 1.6;
  margin-top: 1rem;
}
.sim-clinical-pearl strong { display: block; margin-bottom: 0.3rem; font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.05em; }

.sim-nav-btns { display: flex; gap: 0.75rem; justify-content: flex-end; }

/* Debrief */
.sim-debrief {
  background: linear-gradient(135deg, #1e3a8a, #1a56db);
  color: white;
  border-radius: var(--radius-xl);
  padding: 2rem;
  margin: 1.5rem 2rem;
}
.sim-debrief h3 { font-size: 1.2rem; font-weight: 800; margin-bottom: 1rem; }
.sim-debrief-text { font-size: 0.875rem; opacity: 0.9; line-height: 1.8; white-space: pre-wrap; }
.sim-score-display {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  padding: 1rem 1.5rem;
  margin-bottom: 1.5rem;
}
.sim-score-big { font-size: 3.5rem; font-weight: 900; }
.sim-score-label { font-size: 0.8rem; opacity: 0.75; }

/* ── Assessment Styles ──────────────────────────────────────────────────────── */
.assessment-info-banner {
  background: linear-gradient(135deg, #1e3a8a, var(--primary));
  color: white;
  border-radius: var(--radius-xl);
  padding: 1.5rem 2rem;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: var(--space-xl);
}
.ai-banner-icon {
  width: 48px;
  height: 48px;
  background: rgba(255,255,255,0.2);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}
.assessment-info-banner strong { display: block; font-size: 1rem; margin-bottom: 0.4rem; }
.assessment-info-banner p { font-size: 0.875rem; opacity: 0.85; line-height: 1.6; }

.assessment-module-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-md);
}
.assessment-module-card {
  background: white;
  border-radius: var(--radius-xl);
  border: 1px solid var(--gray-200);
  padding: 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}
.assessment-module-card:hover { border-color: var(--primary-light); box-shadow: var(--shadow-md); transform: translateY(-1px); }
.assessment-module-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.assessment-module-info { flex: 1; min-width: 0; }
.assessment-module-name { font-size: 0.85rem; font-weight: 700; color: var(--gray-900); margin-bottom: 0.2rem; }
.assessment-module-meta { font-size: 0.75rem; color: var(--gray-500); }
.assessment-module-badge {
  flex-shrink: 0;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  font-size: 0.7rem;
  font-weight: 700;
}
.badge-mastery { background: var(--success-light); color: #065f46; }
.badge-partial { background: var(--warning-light); color: #92400e; }
.badge-new { background: var(--gray-100); color: var(--gray-500); }

/* Assessment header bar */
.assessment-header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.assessment-progress-indicator { font-size: 0.875rem; font-weight: 600; color: var(--gray-600); }
.assessment-timer {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--gray-500);
  background: var(--gray-100);
  padding: 0.3rem 0.6rem;
  border-radius: var(--radius-md);
}
.assessment-progress-bar {
  height: 6px;
  background: var(--gray-100);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: var(--space-lg);
}
.assessment-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: var(--radius-full);
  transition: width 0.3s ease;
}

/* Question */
.question-container {
  background: white;
  border-radius: var(--radius-xl);
  border: 1px solid var(--gray-200);
  padding: 2rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow);
}
.question-metadata {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}
.q-tag {
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  font-size: 0.7rem;
  font-weight: 600;
}
.q-tag-module { background: var(--primary-pale); color: var(--primary); }
.q-tag-difficulty { background: var(--warning-light); color: #92400e; }
.q-tag-blooms { background: var(--purple-light); color: var(--purple); }
.q-tag-type { background: var(--gray-100); color: var(--gray-600); }

.question-vignette {
  background: #fefce8;
  border: 1px solid #fde68a;
  border-radius: var(--radius-lg);
  padding: 1rem;
  font-size: 0.85rem;
  color: #78350f;
  margin-bottom: 1rem;
  line-height: 1.6;
}
.question-vignette strong { display: block; margin-bottom: 0.4rem; font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.05em; }

.question-stem {
  font-size: 1rem;
  font-weight: 600;
  color: var(--gray-900);
  line-height: 1.65;
  margin-bottom: 1.5rem;
}
.question-options { display: flex; flex-direction: column; gap: 0.6rem; }
.question-option {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.875rem 1rem;
  border-radius: var(--radius-lg);
  border: 2px solid var(--gray-200);
  cursor: pointer;
  transition: var(--transition);
  background: white;
  text-align: left;
  width: 100%;
}
.question-option:hover { border-color: var(--primary-light); background: var(--primary-pale); }
.question-option.selected { border-color: var(--primary); background: var(--primary-pale); }
.question-option.correct { border-color: var(--success); background: var(--success-light); }
.question-option.incorrect { border-color: var(--danger); background: var(--danger-light); }
.question-option.missed { border-color: var(--success); background: var(--success-light); opacity: 0.8; }
.q-option-letter {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--gray-100);
  color: var(--gray-600);
  font-weight: 700;
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.question-option.selected .q-option-letter { background: var(--primary); color: white; }
.question-option.correct .q-option-letter { background: var(--success); color: white; }
.question-option.incorrect .q-option-letter { background: var(--danger); color: white; }
.q-option-text { font-size: 0.875rem; color: var(--gray-700); line-height: 1.5; }
.question-actions { display: flex; gap: 0.75rem; justify-content: flex-end; }

/* Results */
.results-container {
  max-width: 800px;
  margin: 0 auto;
}
.results-header {
  text-align: center;
  background: white;
  border-radius: var(--radius-2xl);
  padding: 2.5rem;
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow-lg);
  margin-bottom: var(--space-xl);
}
.results-score-circle {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  margin: 0 auto 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  font-size: 2.5rem;
  font-weight: 900;
  position: relative;
}
.results-score-circle.mastery {
  background: radial-gradient(circle, var(--mastery-gold-light), #fef3c7);
  border: 4px solid var(--mastery-gold);
  color: #92400e;
}
.results-score-circle.pass {
  background: var(--success-light);
  border: 4px solid var(--success);
  color: #065f46;
}
.results-score-circle.fail {
  background: var(--danger-light);
  border: 4px solid var(--danger);
  color: #991b1b;
}
.results-score-label { font-size: 0.7rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; }
.results-mastery-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--mastery-gold);
  color: white;
  padding: 0.5rem 1.2rem;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 0.875rem;
  margin-bottom: 1rem;
}
.results-xp-earned {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--purple-light);
  color: var(--purple);
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 700;
}

.results-adaptive {
  background: white;
  border-radius: var(--radius-xl);
  border: 1px solid var(--gray-200);
  padding: 1.5rem;
  margin-bottom: var(--space-xl);
  box-shadow: var(--shadow);
}
.results-adaptive h3 { font-size: 1rem; font-weight: 700; margin-bottom: 0.75rem; display: flex; align-items: center; gap: 0.5rem; }
.adaptive-box {
  padding: 1rem;
  border-radius: var(--radius-lg);
  font-size: 0.875rem;
  line-height: 1.6;
}
.adaptive-box.advance { background: var(--success-light); color: #065f46; border-left: 4px solid var(--success); }
.adaptive-box.review { background: var(--warning-light); color: #92400e; border-left: 4px solid var(--warning); }
.adaptive-box.remediate { background: var(--danger-light); color: #991b1b; border-left: 4px solid var(--danger); }

.results-review-list { display: flex; flex-direction: column; gap: 0.75rem; }
.review-item {
  background: white;
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-200);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.review-item-header {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.875rem 1rem;
  cursor: pointer;
  justify-content: space-between;
}
.review-item-status {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  flex-shrink: 0;
}
.status-correct { background: var(--success-light); color: var(--success); }
.status-incorrect { background: var(--danger-light); color: var(--danger); }
.review-item-stem { font-size: 0.875rem; font-weight: 600; color: var(--gray-800); line-height: 1.5; }
.review-item-explanation {
  padding: 0.875rem 1rem;
  background: var(--gray-50);
  border-top: 1px solid var(--gray-200);
  font-size: 0.8rem;
  color: var(--gray-700);
  line-height: 1.6;
  display: none;
}
.review-item-explanation.show { display: block; }
.review-pdf-ref {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  background: var(--primary-pale);
  color: var(--primary);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  font-size: 0.7rem;
  font-weight: 600;
  margin-top: 0.5rem;
}

/* ── AI Assistant Styles ──────────────────────────────────────────────────── */
.ai-disclaimer {
  background: #fff7ed;
  border: 1px solid #fdba74;
  border-radius: var(--radius-xl);
  padding: 1rem 1.5rem;
  margin-bottom: var(--space-xl);
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.875rem;
  color: #7c2d12;
  line-height: 1.6;
}
.ai-container { max-width: 900px; margin: 0 auto; }
.chat-window {
  background: var(--gray-50);
  border-radius: var(--radius-xl);
  border: 1px solid var(--gray-200);
  min-height: 400px;
  max-height: 560px;
  overflow-y: auto;
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  scroll-behavior: smooth;
  margin-bottom: 1rem;
}
.chat-message {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  animation: fadeIn 0.2s ease;
}
.chat-message.user-message { flex-direction: row-reverse; }
.message-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}
.bot-message .message-icon { background: var(--primary); color: white; }
.user-message .message-icon { background: var(--gray-700); color: white; }
.message-content {
  max-width: 75%;
  padding: 0.875rem 1.1rem;
  border-radius: var(--radius-xl);
  font-size: 0.875rem;
  line-height: 1.7;
}
.bot-message .message-content { background: white; border: 1px solid var(--gray-200); color: var(--gray-800); border-top-left-radius: 4px; }
.user-message .message-content { background: var(--primary); color: white; border-top-right-radius: 4px; }
.message-content p { margin-bottom: 0.5rem; }
.message-content p:last-child { margin-bottom: 0; }
.message-content ul { margin: 0.5rem 0; padding-left: 1rem; list-style: disc; }
.message-content li { margin-bottom: 0.3rem; }
.message-content strong { font-weight: 700; }
.message-sources {
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--gray-200);
}
.message-sources-label { font-size: 0.7rem; font-weight: 700; color: var(--gray-500); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 0.4rem; }
.source-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  background: var(--primary-pale);
  color: var(--primary);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  font-size: 0.7rem;
  font-weight: 600;
  margin: 0.15rem;
}
.confidence-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  font-size: 0.7rem;
  font-weight: 600;
  margin-top: 0.4rem;
}
.confidence-high { background: var(--success-light); color: #065f46; }
.confidence-medium { background: var(--warning-light); color: #92400e; }
.confidence-low { background: var(--danger-light); color: #991b1b; }

.chat-input-area {
  display: flex;
  gap: 0.75rem;
  align-items: flex-end;
}
.chat-input-wrap {
  flex: 1;
  position: relative;
}
.chat-input {
  width: 100%;
  padding: 0.875rem 1.1rem;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-xl);
  font-size: 0.9rem;
  font-family: inherit;
  resize: none;
  transition: var(--transition);
  line-height: 1.5;
}
.chat-input:focus { outline: none; border-color: var(--primary); }
.chat-send-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary);
  color: white;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: var(--transition);
  flex-shrink: 0;
}
.chat-send-btn:hover { background: var(--primary-dark); transform: scale(1.05); }
.chat-send-btn:disabled { background: var(--gray-300); cursor: not-allowed; transform: none; }
.chat-suggestions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  align-items: center;
  margin-top: 0.75rem;
  font-size: 0.75rem;
  color: var(--gray-500);
}
.suggestion-btn {
  background: white;
  border: 1px solid var(--gray-200);
  color: var(--gray-600);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  transition: var(--transition);
}
.suggestion-btn:hover { border-color: var(--primary-light); color: var(--primary); background: var(--primary-pale); }
.typing-indicator { display: flex; align-items: center; gap: 0.3rem; }
.typing-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gray-400);
  animation: typing 1.4s infinite;
}
.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }
@keyframes typing { 0%, 60%, 100% { transform: translateY(0); opacity: 0.5; } 30% { transform: translateY(-6px); opacity: 1; } }

/* ── Search Styles ────────────────────────────────────────────────────────── */
.search-container { max-width: 800px; margin: 0 auto; }
.search-input-wrap { position: relative; margin-bottom: var(--space-xl); }
.search-input {
  width: 100%;
  padding: 1.1rem 1.4rem 1.1rem 3.2rem;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-xl);
  font-size: 1rem;
  transition: var(--transition);
  background: white;
  box-shadow: var(--shadow);
}
.search-input:focus { outline: none; border-color: var(--primary); box-shadow: var(--shadow-glow); }
.search-icon {
  position: absolute;
  left: 1.1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--gray-400);
  font-size: 1rem;
}
.search-results { display: flex; flex-direction: column; gap: 0.75rem; }
.search-result-card {
  background: white;
  border-radius: var(--radius-xl);
  border: 1px solid var(--gray-200);
  padding: 1.25rem;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}
.search-result-card:hover { border-color: var(--primary-light); box-shadow: var(--shadow-md); transform: translateX(3px); }
.search-result-title { font-size: 0.95rem; font-weight: 700; color: var(--gray-900); margin-bottom: 0.3rem; }
.search-result-type { font-size: 0.7rem; color: var(--primary); font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 0.4rem; }
.search-result-excerpt { font-size: 0.825rem; color: var(--gray-600); line-height: 1.6; }
.search-highlight { background: #fef08a; padding: 0.05rem 0.15rem; border-radius: 3px; }

/* ── About Section ────────────────────────────────────────────────────────── */
.about-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: var(--space-lg); }
.about-card {
  background: white;
  border-radius: var(--radius-xl);
  border: 1px solid var(--gray-200);
  padding: 1.75rem;
  box-shadow: var(--shadow);
}
.about-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-lg);
  background: var(--primary-pale);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 1rem;
}
.about-card h3 { font-size: 1rem; font-weight: 700; color: var(--gray-900); margin-bottom: 0.75rem; }
.about-card p { font-size: 0.875rem; color: var(--gray-600); line-height: 1.7; margin-bottom: 0.75rem; }
.about-card ul { list-style: disc; padding-left: 1.2rem; }
.about-card li { font-size: 0.875rem; color: var(--gray-600); margin-bottom: 0.4rem; }
.chapter-list { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 0.5rem; }
.chapter-tag {
  background: var(--primary-pale);
  color: var(--primary);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  font-size: 0.7rem;
  font-weight: 600;
}

/* ── Footer ────────────────────────────────────────────────────────────────── */
.footer {
  background: var(--gray-900);
  color: var(--gray-300);
  padding: var(--space-xl) var(--space-lg);
  margin-top: var(--space-3xl);
}
.footer-container {
  max-width: 1300px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  flex-wrap: wrap;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 800;
  font-size: 1rem;
  color: white;
}
.footer-disclaimer {
  font-size: 0.75rem;
  color: var(--gray-400);
  max-width: 500px;
  line-height: 1.6;
}
.footer-links { display: flex; gap: 1.5rem; }
.footer-links a { color: var(--gray-400); font-size: 0.8rem; transition: var(--transition); }
.footer-links a:hover { color: white; text-decoration: none; }

/* ── Loading / Utility ──────────────────────────────────────────────────────── */
.loading-placeholder {
  text-align: center;
  color: var(--gray-400);
  padding: 2rem;
  font-size: 0.875rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}
.loading-spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--gray-200);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.empty-state {
  text-align: center;
  padding: var(--space-3xl) var(--space-lg);
  color: var(--gray-400);
}
.empty-state-icon { font-size: 3rem; margin-bottom: 1rem; }
.empty-state-title { font-size: 1.1rem; font-weight: 700; color: var(--gray-600); margin-bottom: 0.5rem; }
.empty-state-desc { font-size: 0.875rem; }

.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  font-size: 0.7rem;
  font-weight: 700;
}
.pill-blue { background: var(--primary-pale); color: var(--primary); }
.pill-green { background: var(--success-light); color: #065f46; }
.pill-amber { background: var(--warning-light); color: #92400e; }
.pill-red { background: var(--danger-light); color: #991b1b; }

/* ── Responsive ──────────────────────────────────────────────────────────────── */
@media (max-width: 1100px) {
  .hero { grid-template-columns: 1fr; min-height: auto; }
  .hero-visual { display: none; }
  .hero-title { font-size: 2.4rem; }
}
@media (max-width: 768px) {
  .nav-links { display: none; flex-direction: column; position: absolute; top: 60px; left: 0; right: 0; background: white; border-bottom: 1px solid var(--gray-200); padding: 0.75rem; z-index: 998; box-shadow: var(--shadow-lg); }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }
  .hero-title { font-size: 2rem; }
  .hero-stats { gap: var(--space-lg); }
  .section-title { font-size: 1.6rem; }
  .sim-step-body, .sim-debrief { padding: 1.25rem; }
  .question-container { padding: 1.25rem; }
  .assessment-header-bar { flex-direction: column; align-items: flex-start; }
  .sim-grid { grid-template-columns: 1fr; }
  .dashboard-hero { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .hero { padding: var(--space-xl) var(--space-md); }
  .section-container { padding: var(--space-lg) var(--space-md); }
  .hero-stats { justify-content: center; }
  .dashboard-hero { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; }
  .hero-actions button { width: 100%; justify-content: center; }
}