/* ==========================================================================
   THE SEVEN SINS OF MEDICINE (1949) — STYLESHEET
   Design System: Linear-Inspired Dark/Light Theme with Editorial Polish
   ========================================================================== */

:root {
  /* Color Palette - Dark Mode (Default) */
  --bg-app: #08090c;
  --bg-surface: #0f1117;
  --bg-surface-elevated: #161922;
  --bg-surface-hover: #1c212d;
  --bg-glass: rgba(15, 17, 23, 0.88);
  
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-medium: rgba(255, 255, 255, 0.16);
  --border-strong: rgba(255, 255, 255, 0.28);
  
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --text-inverse: #090d16;
  
  --accent-primary: #6366f1;
  --accent-primary-hover: #4f46e5;
  --accent-primary-glow: rgba(99, 102, 241, 0.3);
  --accent-gold: #f59e0b;
  --accent-gold-glow: rgba(245, 158, 11, 0.25);
  --accent-teal: #14b8a6;
  --accent-rose: #f43f5e;
  
  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-display: 'Plus Jakarta Sans', var(--font-sans);
  --font-serif: 'Newsreader', Georgia, Cambria, serif;
  --font-mono: 'JetBrains Mono', monospace;
  
  /* Dimensions & Spacing */
  --header-height: 64px;
  --container-max: 1280px;
  --reading-max: 980px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 250ms cubic-bezier(0.16, 1, 0.3, 1);
  
  /* Shadows */
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.4);
  --shadow-md: 0 6px 18px 0 rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 14px 36px 0 rgba(0, 0, 0, 0.6);
}

/* Light Theme Overrides */
html.light {
  --bg-app: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #f1f5f9;
  --bg-surface-hover: #e2e8f0;
  --bg-glass: rgba(255, 255, 255, 0.92);
  
  --border-subtle: rgba(0, 0, 0, 0.08);
  --border-medium: rgba(0, 0, 0, 0.16);
  --border-strong: rgba(0, 0, 0, 0.28);
  
  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --text-inverse: #ffffff;
  
  --accent-primary: #4f46e5;
  --accent-primary-hover: #4338ca;
  --accent-primary-glow: rgba(79, 70, 229, 0.2);
  
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 6px 18px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 14px 36px rgba(0, 0, 0, 0.12);
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg-app);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

/* Container */
.container {
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* ==========================================================================
   SITE HEADER & NAVIGATION
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background-color: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  transition: border-color var(--transition-fast);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 16px;
}

.brand-group {
  display: flex;
  align-items: center;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-primary);
  cursor: pointer;
}

.brand-badge {
  background: linear-gradient(135deg, #4f46e5, #ec4899);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.05em;
  box-shadow: var(--shadow-sm);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--text-primary);
}

.brand-subtitle {
  font-size: 0.7rem;
  color: var(--text-muted);
}

/* Nav Tabs */
.nav-tabs {
  display: flex;
  align-items: center;
  gap: 4px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 4px;
  border-radius: var(--radius-md);
}

.nav-tab {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.nav-tab svg {
  pointer-events: none;
}

.nav-tab span {
  pointer-events: none;
}

.nav-tab:hover {
  color: var(--text-primary);
  background: var(--bg-surface-elevated);
}

.nav-tab.active {
  color: #fff;
  background: var(--accent-primary);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.icon-btn:hover {
  color: var(--text-primary);
  background: var(--bg-surface-hover);
  border-color: var(--border-medium);
}

.search-trigger-btn {
  width: auto;
  padding: 0 10px;
  gap: 8px;
}

.kbd-hint {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-medium);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 1px 5px;
  border-radius: 4px;
  color: var(--text-muted);
}

/* Lang Toggle */
.lang-toggle-wrapper {
  display: flex;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 2px;
}

.lang-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 4px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.lang-btn.active {
  background: var(--accent-primary);
  color: #fff;
}

/* Theme Toggle Icons */
html.dark .sun-icon { display: block; }
html.dark .moon-icon { display: none; }
html.light .sun-icon { display: none; }
html.light .moon-icon { display: block; }

/* Reading Progress Bar */
.reading-progress-track {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: transparent;
}

.reading-progress-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #6366f1, #ec4899, #f59e0b);
  transition: width 50ms linear;
}

/* ==========================================================================
   BUTTONS & UI CONTROLS
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 10px 18px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-lg {
  padding: 12px 24px;
  font-size: 0.95rem;
  border-radius: var(--radius-md);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.8rem;
  border-radius: var(--radius-sm);
}

.btn-primary {
  background: var(--accent-primary);
  color: #fff;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2), 0 0 16px var(--accent-primary-glow);
}

.btn-primary:hover {
  background: var(--accent-primary-hover);
  transform: translateY(-1px);
}

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

.btn-secondary:hover {
  background: var(--bg-surface-hover);
  border-color: var(--border-strong);
}

.btn-tertiary {
  background: rgba(245, 158, 11, 0.15);
  color: #f59e0b;
  border: 1px solid rgba(245, 158, 11, 0.35);
}

.btn-tertiary:hover {
  background: rgba(245, 158, 11, 0.25);
  border-color: #f59e0b;
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--border-medium);
  color: var(--text-secondary);
}

.btn-outline:hover {
  background: var(--bg-surface-elevated);
  color: var(--text-primary);
  border-color: var(--border-strong);
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */

.hero-section {
  padding: 56px 0 48px;
  position: relative;
  border-bottom: 1px solid var(--border-subtle);
}

.hero-container {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}

.hero-badge-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}

.hero-pill-date {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  padding: 5px 14px;
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.hero-pill-delta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(245, 158, 11, 0.15);
  border: 1px solid rgba(245, 158, 11, 0.35);
  color: var(--accent-gold);
  padding: 5px 12px;
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
}

.pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-gold);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(1.3); }
  100% { opacity: 1; transform: scale(1); }
}

.hero-title {
  font-family: var(--font-display);
  font-size: 3.25rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.gradient-text {
  background: linear-gradient(135deg, #818cf8 0%, #c084fc 50%, #f472b6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 28px;
}

/* Historic Evidence Card (Enlarged and High-Contrast) */
.historic-evidence-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 32px;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-fast);
}

.historic-evidence-card:hover {
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-lg);
}

.evidence-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
  gap: 12px;
}

.evidence-tag {
  background: rgba(20, 184, 166, 0.2);
  color: var(--accent-teal);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 800;
  padding: 3px 10px;
  border-radius: 4px;
  letter-spacing: 0.05em;
}

.evidence-meta {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.evidence-zoom-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-medium);
  color: var(--text-primary);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.evidence-zoom-btn:hover {
  color: #fff;
  background: var(--accent-primary);
  border-color: var(--accent-primary);
}

.evidence-image-frame {
  background: #ffffff;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  padding: 16px;
  overflow: hidden;
  cursor: pointer;
  transition: transform var(--transition-fast);
}

.evidence-image-frame:hover {
  transform: scale(1.01);
}

.evidence-img {
  width: 100%;
  height: auto;
  display: block;
  filter: contrast(1.1);
}

.evidence-overlay-caption {
  margin-top: 10px;
  font-size: 0.825rem;
  color: #1e293b;
  line-height: 1.45;
  border-top: 1px solid #e2e8f0;
  padding-top: 8px;
}

/* Metrics Grid */
.hero-metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 32px;
}

.metric-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 14px;
  display: flex;
  flex-direction: column;
}

.metric-num {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.1;
}

.metric-label {
  font-size: 0.725rem;
  color: var(--text-muted);
  margin-top: 4px;
  line-height: 1.3;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

/* Hero Media Showcase */
.hero-media-wrapper {
  position: relative;
}

.hero-art-frame {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  position: relative;
}

.hero-art-img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform var(--transition-normal);
}

.hero-art-frame:hover .hero-art-img {
  transform: scale(1.02);
}

.hero-art-tag {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 16px 20px;
  background: linear-gradient(0deg, rgba(8, 9, 12, 0.95) 0%, transparent 100%);
  display: flex;
  flex-direction: column;
  color: #ffffff;
}

.hero-art-tag span {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.hero-art-tag small {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* ==========================================================================
   DOCK SECTION (7 SINS NAVIGATION GRID)
   ========================================================================== */

.dock-section {
  padding: 48px 0;
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-surface);
}

.dock-header {
  margin-bottom: 24px;
}

.dock-kicker {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-primary);
  letter-spacing: 0.1em;
}

.dock-title {
  font-family: var(--font-display);
  font-size: 1.85rem;
  font-weight: 800;
  margin-top: 4px;
}

.dock-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.dock-card {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 20px;
  text-decoration: none;
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
  position: relative;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.dock-card:hover {
  background: var(--bg-surface-hover);
  border-color: var(--accent-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.dock-num {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.dock-card:hover .dock-num {
  color: var(--accent-primary);
}

.dock-name {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
}

.dock-name-pt {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-gold);
  margin-bottom: 8px;
}

.dock-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.dock-arrow {
  position: absolute;
  top: 20px;
  right: 20px;
  color: var(--text-muted);
  font-size: 1.1rem;
  transition: transform var(--transition-fast), color var(--transition-fast);
}

.dock-card:hover .dock-arrow {
  transform: translateX(4px);
  color: var(--accent-primary);
}

/* ==========================================================================
   VIEW PANELS & READING VIEW (LARGER TYPOGRAPHY)
   ========================================================================== */

.view-panel {
  display: none;
  padding: 48px 0 96px;
}

.view-panel.active {
  display: block;
}

.reading-container {
  max-width: var(--reading-max);
}

/* Reading Toolbar */
.reading-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  padding: 12px 18px;
  margin-bottom: 40px;
  position: sticky;
  top: calc(var(--header-height) + 12px);
  z-index: 90;
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(14px);
  gap: 12px;
  flex-wrap: wrap;
}

.toolbar-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.toolbar-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 600;
}

.tb-btn {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.tb-btn.active {
  background: var(--accent-primary);
  color: #fff;
  border-color: var(--accent-primary);
}

.tb-icon-btn {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.tb-icon-btn:hover {
  color: var(--text-primary);
  background: var(--bg-surface-hover);
}

.tb-btn-speech {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(99, 102, 241, 0.18);
  color: var(--accent-primary);
  border-color: rgba(99, 102, 241, 0.35);
  font-weight: 600;
}

.tb-btn-speech:hover {
  background: var(--accent-primary);
  color: #fff;
}

/* Article Body & Meta (Noticeably Larger & Crisper) */
.article-header-meta {
  text-align: center;
  margin-bottom: 48px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border-medium);
}

.publication-badge {
  display: inline-block;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-medium);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent-gold);
  padding: 5px 16px;
  border-radius: var(--radius-full);
  margin-bottom: 18px;
}

.article-main-title {
  font-family: var(--font-serif);
  font-size: 3.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 18px;
}

.author-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.author-name {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: 0.05em;
}

.author-creds {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.author-role {
  font-size: 0.95rem;
  color: var(--text-muted);
}

.lecture-origin-note {
  margin-top: 16px;
  font-size: 0.9rem;
  color: var(--text-muted);
  font-style: italic;
}

/* Exordium */
.exordium-section {
  margin-bottom: 56px;
}

.lead-dropcap::first-letter {
  font-family: var(--font-serif);
  font-size: 4.2rem;
  float: left;
  line-height: 0.75;
  margin-right: 14px;
  margin-top: 8px;
  color: var(--accent-primary);
  font-weight: 700;
}

/* Sin Block Container */
.sin-block {
  margin-bottom: 84px;
  padding-top: 40px;
  border-top: 1px solid var(--border-subtle);
  position: relative;
}

.sin-header-sticky {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 28px;
}

.sin-badge {
  background: var(--accent-primary);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 800;
  padding: 5px 12px;
  border-radius: var(--radius-sm);
}

.sin-title {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.sin-title-sub {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-muted);
}

.sin-subheading {
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 700;
  margin: 32px 0 16px;
  color: var(--accent-gold);
}

/* Sin Visual Card */
.sin-visual-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 32px;
  box-shadow: var(--shadow-md);
}

.sin-visual-img {
  width: 100%;
  height: auto;
  display: block;
}

.sin-visual-caption {
  padding: 14px 20px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  border-top: 1px solid var(--border-subtle);
  background: var(--bg-surface-elevated);
}

/* Dual Content (EN / PT / Split) */
.content-dual {
  position: relative;
}

/* Single View Mode (PT or EN active) */
body[data-reading-lang="pt"] .content-en { display: none; }
body[data-reading-lang="pt"] .content-pt { display: block; }

body[data-reading-lang="en"] .content-pt { display: none; }
body[data-reading-lang="en"] .content-en { display: block; }

/* Split / Parallel View */
body[data-reading-lang="bilingual"] .content-dual {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
}

body[data-reading-lang="bilingual"] .content-en,
body[data-reading-lang="bilingual"] .content-pt {
  display: block;
}

body[data-reading-lang="bilingual"] .content-en {
  border-right: 1px solid var(--border-subtle);
  padding-right: 28px;
}

/* Article Body Typography (Default 1.3rem - Generous & Legible) */
.article-body p {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  line-height: 1.85;
  color: var(--text-primary);
  margin-bottom: 24px;
}

body.font-sans-mode .article-body p {
  font-family: var(--font-sans);
  font-size: 1.15rem;
  line-height: 1.75;
}

.article-body em {
  font-style: italic;
  color: var(--accent-gold);
}

.article-body strong {
  font-weight: 700;
  color: var(--text-primary);
}

.poem-quote {
  background: var(--bg-surface);
  border-left: 4px solid var(--accent-gold);
  padding: 20px 28px;
  margin: 28px 0;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.25rem;
  line-height: 1.7;
  color: var(--text-primary);
}

.final-words {
  font-weight: 700;
  color: var(--accent-teal) !important;
  margin-top: 28px;
}

.footnote-inline {
  font-size: 0.85rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
  margin-top: 14px;
  padding-top: 10px;
  border-top: 1px dashed var(--border-subtle);
}

/* Teaching Pearl Box */
.teaching-pearl-box {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.09) 0%, rgba(20, 184, 166, 0.06) 100%);
  border: 1px solid rgba(99, 102, 241, 0.28);
  border-radius: var(--radius-md);
  padding: 22px 24px;
  margin: 36px 0 20px;
}

.pearl-header {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--accent-primary);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  margin-bottom: 10px;
}

.pearl-content {
  font-size: 0.975rem;
  line-height: 1.6;
  color: var(--text-primary);
}

/* ==========================================================================
   VIEW 2: PARALLEL COMPARISON MATRIX (1949 vs 2026+)
   ========================================================================== */

.section-intro {
  text-align: center;
  max-width: 820px;
  margin: 0 auto 48px;
}

.section-kicker {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--accent-primary);
  letter-spacing: 0.1em;
}

.section-heading {
  font-family: var(--font-display);
  font-size: 2.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 8px 0 12px;
}

.section-subtext {
  font-size: 1.05rem;
  color: var(--text-secondary);
}

.parallel-matrix-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.matrix-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.matrix-card:hover {
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-md);
}

.matrix-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.sin-badge-sm {
  background: var(--accent-primary);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 800;
  padding: 3px 10px;
  border-radius: 4px;
}

.matrix-card-header h3 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 800;
}

.matrix-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 18px;
}

.matrix-era {
  background: var(--bg-surface-elevated);
  border-radius: var(--radius-md);
  padding: 18px;
  border: 1px solid var(--border-subtle);
}

.era-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 800;
  margin-bottom: 8px;
  letter-spacing: 0.05em;
}

.era-1949 .era-tag { color: var(--accent-gold); }
.era-modern .era-tag { color: var(--accent-teal); }

.matrix-era p {
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--text-secondary);
}

.matrix-lesson {
  background: rgba(99, 102, 241, 0.1);
  border-left: 4px solid var(--accent-primary);
  padding: 12px 16px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.9rem;
  color: var(--text-primary);
}

/* ==========================================================================
   VIEW 3: CLINICAL CASE SIMULATOR
   ========================================================================== */

.simulator-container {
  max-width: 840px;
}

.quiz-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.quiz-progress-bar {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--border-subtle);
}

.quiz-progress-fill {
  height: 100%;
  background: var(--accent-primary);
  transition: width var(--transition-normal);
}

.quiz-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.quiz-counter {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--accent-primary);
}

.quiz-score {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent-gold);
}

.quiz-scenario-box {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 22px;
  margin-bottom: 24px;
}

.quiz-scenario-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.quiz-scenario-text {
  font-size: 1rem;
  line-height: 1.65;
  color: var(--text-secondary);
}

.quiz-options-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-bottom: 24px;
}

.quiz-opt-btn {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 15px 20px;
  border-radius: var(--radius-md);
  text-align: left;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.quiz-opt-btn:hover:not(:disabled) {
  background: var(--bg-surface-hover);
  border-color: var(--accent-primary);
  transform: translateX(4px);
}

.quiz-opt-btn.correct {
  background: rgba(20, 184, 166, 0.2);
  border-color: var(--accent-teal);
  color: #fff;
}

.quiz-opt-btn.incorrect {
  background: rgba(244, 63, 94, 0.2);
  border-color: var(--accent-rose);
  color: #fff;
}

.quiz-feedback-box {
  background: var(--bg-surface-elevated);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-bottom: 24px;
  border-left: 4px solid var(--accent-primary);
}

.quiz-feedback-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.quiz-feedback-desc {
  font-size: 0.925rem;
  line-height: 1.55;
  color: var(--text-secondary);
}

.quiz-feedback-quote {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 0.9rem;
  color: var(--accent-gold);
  margin-top: 10px;
  display: block;
}

.quiz-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* ==========================================================================
   VIEW 4: PRECEPTOR GUIDE & ROUNDS CHECKLIST
   ========================================================================== */

.preceptor-container {
  max-width: 920px;
}

.print-actions {
  margin-top: 18px;
}

.checklist-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-top: 36px;
}

.check-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 22px;
  display: flex;
  gap: 18px;
  align-items: flex-start;
  transition: all var(--transition-fast);
}

.check-card:hover {
  background: var(--bg-surface-hover);
  border-color: var(--accent-primary);
}

.check-icon {
  background: var(--accent-primary);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 800;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.check-content h4 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 800;
  margin-bottom: 6px;
}

.check-content p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 10px;
}

.check-cue {
  font-size: 0.85rem;
  color: var(--accent-gold);
  background: var(--bg-surface-elevated);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
}

/* ==========================================================================
   MODALS (SEARCH & FACSIMILE SCAN VIEWER)
   ========================================================================== */

.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
}

.modal-backdrop.active {
  opacity: 1;
  visibility: visible;
}

.modal-dialog {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-height: 92vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform: scale(0.96);
  transition: transform var(--transition-fast);
}

.modal-backdrop.active .modal-dialog {
  transform: scale(1);
}

/* Search Dialog */
.search-dialog {
  max-width: 680px;
}

.search-input-wrapper {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 24px;
  border-bottom: 1px solid var(--border-subtle);
}

.search-input-wrapper input {
  flex: 1;
  background: transparent;
  border: none;
  font-family: var(--font-sans);
  font-size: 1.05rem;
  color: var(--text-primary);
  outline: none;
}

.search-input-wrapper input::placeholder {
  color: var(--text-muted);
}

.kbd-esc {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-medium);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 3px 8px;
  border-radius: 4px;
  color: var(--text-muted);
}

.search-results-list {
  padding: 16px;
  overflow-y: auto;
  max-height: 420px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.search-empty-state {
  text-align: center;
  padding: 36px;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.search-result-item {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  color: var(--text-primary);
}

.search-result-item:hover {
  background: var(--bg-surface-hover);
  border-color: var(--accent-primary);
}

.search-result-title {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--accent-primary);
  margin-bottom: 4px;
}

.search-result-snippet {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.45;
}

.search-result-snippet mark {
  background: rgba(245, 158, 11, 0.35);
  color: #fff;
  padding: 0 3px;
  border-radius: 2px;
}

/* Scan Dialog (Large High-Resolution) */
.scan-dialog {
  max-width: 1040px;
  height: 90vh;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 24px;
  border-bottom: 1px solid var(--border-subtle);
}

.modal-title-group h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 800;
}

.modal-subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.scan-tabs {
  display: flex;
  gap: 6px;
  padding: 10px 24px;
  background: var(--bg-surface-elevated);
  border-bottom: 1px solid var(--border-subtle);
  overflow-x: auto;
}

.scan-tab-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-fast);
}

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

.scan-tab-btn.active {
  background: var(--accent-primary);
  color: #fff;
}

.scan-image-viewer {
  flex: 1;
  background: #0b0d12;
  overflow: auto;
  padding: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.scan-full-img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: var(--radius-sm);
  box-shadow: 0 6px 28px rgba(0,0,0,0.6);
}

.scan-footer {
  padding: 12px 24px;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.8rem;
  color: var(--text-muted);
  text-align: center;
}

/* ==========================================================================
   AUDIO BAR (FLOATING)
   ========================================================================== */

.audio-bar {
  position: fixed;
  bottom: 24px;
  left: 0;
  right: 0;
  z-index: 99;
}

.audio-bar-inner {
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-full);
  padding: 10px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow-lg);
  max-width: 720px;
}

.audio-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.audio-pulse {
  width: 10px;
  height: 10px;
  background: var(--accent-teal);
  border-radius: 50%;
  animation: pulse 1.5s infinite;
}

.audio-info strong {
  display: block;
  font-size: 0.85rem;
  line-height: 1.2;
}

.audio-info small {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.audio-controls {
  display: flex;
  align-items: center;
  gap: 10px;
}

.audio-btn {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-medium);
  color: var(--text-primary);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.audio-speed-select {
  display: flex;
  background: var(--bg-surface-elevated);
  border-radius: var(--radius-full);
  padding: 2px;
}

.speed-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: var(--radius-full);
  cursor: pointer;
}

.speed-btn.active {
  background: var(--accent-primary);
  color: #fff;
}

/* ==========================================================================
   SITE FOOTER
   ========================================================================== */

.site-footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  padding: 64px 0 24px;
}

.footer-container {
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-logo {
  margin-bottom: 14px;
}

.footer-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.footer-title {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--accent-primary);
}

.shortcuts-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.shortcut-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.shortcut-item kbd {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-medium);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 2px 7px;
  border-radius: 4px;
  color: var(--text-primary);
}

.footer-bottom {
  border-top: 1px solid var(--border-subtle);
  padding-top: 24px;
}

.footer-bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 12px;
}

.footer-tagline {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--accent-gold);
}

/* ==========================================================================
   RESPONSIVE DESIGN & PRINT STYLES
   ========================================================================== */

@media (max-width: 1024px) {
  .hero-container {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  
  .hero-media-wrapper {
    max-width: 600px;
    margin: 0 auto;
  }
  
  .footer-container {
    grid-template-columns: 1fr 1fr;
  }
  
  body[data-reading-lang="bilingual"] .content-dual {
    grid-template-columns: 1fr;
  }
  
  body[data-reading-lang="bilingual"] .content-en {
    border-right: none;
    border-bottom: 1px dashed var(--border-subtle);
    padding-right: 0;
    padding-bottom: 24px;
    margin-bottom: 24px;
  }
}

@media (max-width: 768px) {
  .site-header {
    height: auto;
    min-height: 56px;
    padding: 6px 0;
  }

  .header-inner {
    flex-wrap: wrap;
    gap: 8px;
  }

  .brand-subtitle {
    display: none;
  }

  .nav-tabs {
    order: 3;
    width: 100%;
    justify-content: space-around;
  }

  .nav-tabs span {
    display: inline;
    font-size: 0.75rem;
  }
  
  .nav-tab {
    padding: 6px 8px;
    gap: 4px;
    flex: 1;
    justify-content: center;
  }

  .nav-tab svg {
    display: none;
  }
  
  .hero-title {
    font-size: 2.2rem;
  }
  
  .hero-metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .matrix-compare {
    grid-template-columns: 1fr;
  }
  
  .footer-container {
    grid-template-columns: 1fr;
  }
  
  .scan-modal-trigger span {
    display: none;
  }

  .reading-toolbar {
    position: relative;
    top: 0;
    margin-bottom: 24px;
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .reading-toolbar .toolbar-group {
    width: 100%;
    justify-content: space-between;
  }
}

@media print {
  .site-header,
  .dock-section,
  .hero-actions,
  .reading-toolbar,
  .audio-bar,
  .site-footer,
  .modal-backdrop,
  .print-actions {
    display: none !important;
  }
  
  body {
    background: #fff !important;
    color: #000 !important;
  }
  
  .view-panel {
    display: block !important;
  }
  
  .matrix-card, .check-card, .teaching-pearl-box {
    border: 1px solid #ccc !important;
    break-inside: avoid;
    box-shadow: none !important;
    background: #fff !important;
    color: #000 !important;
  }
}