/* ==========================================================================
   BULLET.QUEST — TACTICAL TERMINAL DESIGN SYSTEM
   Metaphor: Bloomberg Terminal x Linear.app x Anki
   Palette: Obsidian Dark, Electric Amber, Cobalt Blue, Terminal Monospace
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:ital,wght@0,400;0,500;0,600;0,700;1,400&display=swap');

:root {
  --bg-primary: #07090e;
  --bg-surface: #0e131f;
  --bg-elevated: #141b2d;
  --bg-hover: #1c263d;
  
  --border-subtle: #1a2235;
  --border-default: #25324d;
  --border-focus: #3b82f6;
  
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --brand-amber: #f59e0b;
  --brand-amber-dim: rgba(245, 158, 11, 0.12);
  --brand-orange: #ea580c;
  
  --accent-blue: #2563eb;
  --accent-blue-dim: rgba(37, 99, 235, 0.12);
  --accent-cyan: #06b6d4;
  
  --status-success: #10b981;
  --status-success-dim: rgba(16, 185, 129, 0.12);
  --status-danger: #f43f5e;
  --status-danger-dim: rgba(244, 63, 94, 0.12);
  --status-warning: #fbbf24;
  --status-purple: #8b5cf6;
  
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-full: 9999px;
  
  --shadow-terminal: 0 4px 20px -2px rgba(0, 0, 0, 0.6);
  --shadow-glow-amber: 0 0 15px -3px rgba(245, 158, 11, 0.35);
  --shadow-glow-blue: 0 0 15px -3px rgba(37, 99, 235, 0.35);
}

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

html, body {
  height: 100%;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Scrollbars */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--border-default);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* Typography Utilities */
.font-mono { font-family: var(--font-mono); }
.font-sans { font-family: var(--font-sans); }

.tracking-tight { letter-spacing: -0.025em; }
.tracking-wide { letter-spacing: 0.05em; }
.tracking-wider { letter-spacing: 0.1em; }

/* Grid Layout Shell */
.terminal-layout {
  display: flex;
  min-height: 100vh;
  background-color: var(--bg-primary);
}

/* Sidebar Navigation (Linear style) */
.terminal-sidebar {
  width: 250px;
  flex-shrink: 0;
  background-color: var(--bg-surface);
  border-right: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
  z-index: 40;
}

.brand-header {
  padding: 18px 20px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 16px;
  letter-spacing: -0.03em;
}

.brand-glyph {
  width: 26px;
  height: 26px;
  background: linear-gradient(135deg, var(--brand-amber), var(--brand-orange));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #000;
  font-weight: 900;
  font-family: var(--font-mono);
  font-size: 14px;
}

.nav-section {
  padding: 14px 12px 6px 12px;
}

.nav-section-title {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  padding: 0 10px 6px 10px;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 13px;
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
  margin-bottom: 2px;
}

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

.nav-link.active {
  background-color: var(--bg-hover);
  color: #fff;
  border-left: 2px solid var(--brand-amber);
  padding-left: 10px;
}

.nav-link svg {
  width: 16px;
  height: 16px;
  opacity: 0.8;
}

.nav-link.active svg {
  color: var(--brand-amber);
  opacity: 1;
}

.nav-badge {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 1px 6px;
  border-radius: var(--radius-sm);
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}

.nav-badge.amber {
  background: var(--brand-amber-dim);
  border-color: rgba(245, 158, 11, 0.3);
  color: var(--brand-amber);
}

.sidebar-profile {
  margin-top: auto;
  padding: 14px 16px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(10, 14, 23, 0.5);
}

.profile-avatar {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 12px;
  color: var(--brand-amber);
}

.profile-meta {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.profile-name {
  font-weight: 600;
  font-size: 12px;
  white-space: nowrap;
  text-overflow: ellipsis;
  overflow: hidden;
}

.profile-exam {
  font-size: 10px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  white-space: nowrap;
  text-overflow: ellipsis;
  overflow: hidden;
}

/* Main Content Surface */
.terminal-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  background-color: var(--bg-primary);
}

/* Header Bar */
.terminal-topbar {
  height: 52px;
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 30;
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.system-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-secondary);
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--status-success);
  box-shadow: 0 0 8px var(--status-success);
  animation: pulse-dot 2s infinite ease-in-out;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 14px;
}

.telemetry-chip {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-secondary);
}

.telemetry-chip strong {
  color: var(--text-primary);
  font-weight: 600;
}

.telemetry-chip.streak {
  border-color: rgba(245, 158, 11, 0.3);
  background: var(--brand-amber-dim);
  color: var(--brand-amber);
}

.telemetry-chip.streak strong {
  color: var(--brand-amber);
}

/* Content Container */
.content-body {
  padding: 24px;
  flex: 1;
}

/* Terminal Cards */
.card-terminal {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-terminal);
  position: relative;
  overflow: hidden;
}

.card-terminal::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.08), transparent);
}

.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-title {
  font-size: 14px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

.card-body {
  padding: 20px;
}

/* Metric / Stat Blocks */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.metric-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: border-color 0.2s;
}

.metric-box:hover {
  border-color: var(--border-default);
}

.metric-box.active-glow {
  border-color: rgba(245, 158, 11, 0.4);
  box-shadow: var(--shadow-glow-amber);
}

.metric-label {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.metric-value {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.metric-sub {
  margin-top: 8px;
  font-size: 11px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 5px;
}

/* Button UI */
.btn-tactical {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.15s ease;
  line-height: 1.2;
}

.btn-primary {
  background: var(--brand-amber);
  color: #000;
  border-color: var(--brand-amber);
}
.btn-primary:hover {
  background: #d97706;
  border-color: #d97706;
  box-shadow: var(--shadow-glow-amber);
}

.btn-blue {
  background: var(--accent-blue);
  color: #fff;
  border-color: var(--accent-blue);
}
.btn-blue:hover {
  background: #1d4ed8;
  box-shadow: var(--shadow-glow-blue);
}

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

.btn-danger {
  background: var(--status-danger-dim);
  border-color: rgba(244, 63, 94, 0.4);
  color: var(--status-danger);
}
.btn-danger:hover {
  background: var(--status-danger);
  color: #fff;
}

.btn-sm {
  padding: 5px 10px;
  font-size: 11px;
}

/* Tactical Tags / Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 7px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border: 1px solid transparent;
}

.badge-amber {
  background: var(--brand-amber-dim);
  border-color: rgba(245, 158, 11, 0.3);
  color: var(--brand-amber);
}

.badge-blue {
  background: var(--accent-blue-dim);
  border-color: rgba(37, 99, 235, 0.3);
  color: #60a5fa;
}

.badge-green {
  background: var(--status-success-dim);
  border-color: rgba(16, 185, 129, 0.3);
  color: var(--status-success);
}

.badge-rose {
  background: var(--status-danger-dim);
  border-color: rgba(244, 63, 94, 0.3);
  color: var(--status-danger);
}

.badge-purple {
  background: rgba(139, 92, 246, 0.15);
  border-color: rgba(139, 92, 246, 0.35);
  color: #c084fc;
}

.badge-neutral {
  background: var(--bg-elevated);
  border-color: var(--border-subtle);
  color: var(--text-secondary);
}

/* Streak Heatmap Component (365 days / matrix) */
.heatmap-container {
  overflow-x: auto;
  padding-bottom: 8px;
}
.heatmap-grid {
  display: grid;
  grid-template-rows: repeat(7, 11px);
  grid-auto-flow: column;
  grid-auto-columns: 11px;
  gap: 3px;
}
.heatmap-cell {
  width: 11px;
  height: 11px;
  border-radius: 2px;
  background-color: var(--bg-elevated);
  border: 1px solid rgba(255, 255, 255, 0.03);
  cursor: pointer;
  transition: transform 0.1s;
}
.heatmap-cell:hover {
  transform: scale(1.3);
  border-color: #fff;
  z-index: 10;
}
.heatmap-cell.level-1 { background-color: rgba(245, 158, 11, 0.25); }
.heatmap-cell.level-2 { background-color: rgba(245, 158, 11, 0.50); }
.heatmap-cell.level-3 { background-color: rgba(245, 158, 11, 0.75); }
.heatmap-cell.level-4 { background-color: #f59e0b; box-shadow: 0 0 6px rgba(245, 158, 11, 0.5); }

/* Keyboard Shortcut Pills */
.kbd {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  padding: 1px 5px;
  color: var(--text-secondary);
  background-color: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-bottom: 2px solid var(--border-default);
  border-radius: 3px;
  line-height: 1.2;
}

/* ==========================================================================
   MODULE A: BULLET NODE MICRO-LEARNING PLAYER
   ========================================================================== */
.bullet-player-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 20px;
  height: calc(100vh - 120px);
}

.video-pane {
  display: flex;
  flex-direction: column;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.video-wrapper {
  position: relative;
  background: #000;
  aspect-ratio: 16 / 9;
  width: 100%;
}

.video-wrapper video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.chapter-timeline {
  padding: 16px;
  background: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  overflow-y: auto;
  flex: 1;
}

.chapter-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  margin-bottom: 6px;
  transition: all 0.15s ease;
}

.chapter-item:hover {
  background: var(--bg-elevated);
  border-color: var(--border-subtle);
}

.chapter-item.active {
  background: var(--bg-hover);
  border-color: var(--brand-amber);
}

.chapter-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

.chapter-time {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
}

.notes-pane {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.notes-content {
  padding: 24px;
  overflow-y: auto;
  flex: 1;
  font-size: 14px;
  color: var(--text-secondary);
}

.notes-content h1, .notes-content h2, .notes-content h3 {
  color: var(--text-primary);
  margin: 16px 0 10px 0;
}

.notes-content p {
  margin-bottom: 12px;
  line-height: 1.6;
}

.notes-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 12px;
}

.notes-content th, .notes-content td {
  padding: 8px 12px;
  border: 1px solid var(--border-subtle);
  text-align: left;
}

.notes-content th {
  background: var(--bg-elevated);
  color: var(--text-primary);
  font-family: var(--font-mono);
}

/* Interactive Checkpoint Modal */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(7, 9, 14, 0.85);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

.checkpoint-modal {
  width: 90%;
  max-width: 580px;
  background: var(--bg-surface);
  border: 2px solid var(--brand-amber);
  border-radius: var(--radius-lg);
  box-shadow: 0 0 35px -5px rgba(245, 158, 11, 0.4);
  padding: 28px;
  animation: modal-enter 0.2s ease-out;
}

@keyframes modal-enter {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

/* ==========================================================================
   MODULE B: ACTIVE RECALL SYSTEM (ARS FLASHCARDS)
   ========================================================================== */
.flashcard-stage {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.flashcard-card {
  min-height: 380px;
  perspective: 1200px;
  cursor: pointer;
}

.flashcard-inner {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 380px;
  text-align: left;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  transform-style: preserve-3d;
}

.flashcard-card.is-flipped .flashcard-inner {
  transform: rotateY(180deg);
}

.flashcard-face {
  position: absolute;
  inset: 0;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: 36px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-terminal);
}

.flashcard-back {
  transform: rotateY(180deg);
  border-color: var(--brand-amber);
  background: #0f1524;
}

.flashcard-text {
  font-size: 19px;
  line-height: 1.5;
  color: var(--text-primary);
  font-weight: 500;
  margin: auto 0;
}

.sm2-rating-bar {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 10px;
}

.rating-btn {
  padding: 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-default);
  background: var(--bg-elevated);
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  transition: all 0.15s;
}

.rating-btn:hover {
  border-color: var(--brand-amber);
  background: var(--bg-hover);
}

.rating-btn.again { border-color: rgba(244, 63, 94, 0.4); }
.rating-btn.again:hover { background: var(--status-danger-dim); }

.rating-btn.good { border-color: rgba(59, 130, 246, 0.4); }
.rating-btn.good:hover { background: var(--accent-blue-dim); }

.rating-btn.easy { border-color: rgba(16, 185, 129, 0.4); }
.rating-btn.easy:hover { background: var(--status-success-dim); }

/* ==========================================================================
   MODULE C: GRANULAR ERROR DIAGNOSTIC (GED) TEST ENGINE
   ========================================================================== */
/* TCS iON Simulator Layout */
.tcs-ion-container {
  display: grid;
  grid-template-columns: 1fr 340px;
  height: calc(100vh - 106px);
  background: #f8fafc;
  color: #1e293b;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
}

.tcs-ion-left {
  display: flex;
  flex-direction: column;
  background: #ffffff;
  border-right: 1px solid #cbd5e1;
}

.tcs-ion-header {
  background: #1e3a8a;
  color: #ffffff;
  padding: 10px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  font-weight: 600;
}

.tcs-ion-question-body {
  padding: 24px 28px;
  overflow-y: auto;
  flex: 1;
}

.tcs-option-label {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 14px;
  border: 1px solid #e2e8f0;
  border-radius: 4px;
  margin-bottom: 10px;
  cursor: pointer;
  background: #f8fafc;
  transition: all 0.15s;
}

.tcs-option-label:hover {
  background: #f1f5f9;
  border-color: #94a3b8;
}

.tcs-option-label.selected {
  background: #eff6ff;
  border-color: #2563eb;
  font-weight: 600;
}

.tcs-ion-footer {
  padding: 12px 20px;
  border-top: 1px solid #cbd5e1;
  background: #f1f5f9;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* TCS iON Candidate Palette Panel */
.tcs-ion-right {
  background: #f8fafc;
  display: flex;
  flex-direction: column;
  padding: 14px;
}

.candidate-box {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px;
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 4px;
  margin-bottom: 12px;
}

.candidate-photo {
  width: 44px;
  height: 48px;
  background: #cbd5e1;
  border-radius: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 12px;
  color: #475569;
}

.palette-legend {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  font-size: 11px;
  margin-bottom: 14px;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.palette-shape {
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  color: #fff;
  border-radius: 3px;
  font-family: var(--font-mono);
}

.palette-shape.answered { background: #16a34a; }
.palette-shape.not-answered { background: #dc2626; }
.palette-shape.not-visited { background: #94a3b8; }
.palette-shape.marked { background: #7c3aed; }

.palette-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
  overflow-y: auto;
  max-height: 240px;
  padding: 4px;
}

.palette-btn {
  height: 34px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 13px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: transform 0.1s;
}
.palette-btn:hover { transform: scale(1.06); }

/* UPSC / State PSC Mode (OMR Sheet) */
.upsc-mode-container {
  display: grid;
  grid-template-columns: 1.4fr 380px;
  gap: 20px;
  height: calc(100vh - 120px);
}

.upsc-paper-pane {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 30px;
  overflow-y: auto;
}

.omr-sheet-pane {
  background: #ffffff;
  color: #0f172a;
  border-radius: var(--radius-md);
  border: 2px solid #334155;
  box-shadow: var(--shadow-terminal);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.omr-header {
  background: #0f172a;
  color: #f8fafc;
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.omr-grid-container {
  padding: 16px;
  overflow-y: auto;
  flex: 1;
}

.omr-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 7px 10px;
  border-bottom: 1px dashed #e2e8f0;
  font-family: var(--font-mono);
}

.omr-row.active {
  background: #f1f5f9;
}

.omr-qnum {
  font-weight: 700;
  font-size: 12px;
  width: 28px;
}

.omr-bubbles {
  display: flex;
  gap: 10px;
}

.omr-bubble {
  width: 24px;
  height: 24px;
  border: 1.5px solid #334155;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  cursor: pointer;
  user-select: none;
  transition: all 0.1s ease;
}

.omr-bubble:hover {
  background: #cbd5e1;
}

.omr-bubble.filled {
  background: #0f172a;
  color: #ffffff;
  border-color: #0f172a;
  box-shadow: inset 0 0 4px #000;
}

/* GED 4-Bucket Diagnostic Styles */
.ged-card {
  padding: 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  margin-bottom: 12px;
}

.ged-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 3px;
  font-weight: 700;
}

.ged-tag.KNOWLEDGE_GAP { background: rgba(244, 63, 94, 0.15); color: #fb7185; border: 1px solid rgba(244, 63, 94, 0.4); }
.ged-tag.SLUGGISH_OVERTHINK { background: rgba(245, 158, 11, 0.15); color: #fbbf24; border: 1px solid rgba(245, 158, 11, 0.4); }
.ged-tag.CARELESS_MISREAD { background: rgba(139, 92, 246, 0.15); color: #c084fc; border: 1px solid rgba(139, 92, 246, 0.4); }
.ged-tag.GUESSWORK_TRAP { background: rgba(225, 29, 72, 0.25); color: #f43f5e; border: 1px solid #f43f5e; }
.ged-tag.CORRECT { background: rgba(16, 185, 129, 0.15); color: #34d399; border: 1px solid rgba(16, 185, 129, 0.4); }

/* ==========================================================================
   MODULE D: HYBRID CENTER MANAGEMENT & OMR SCANNER
   ========================================================================== */
.terminal-floor-map {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
  padding: 20px;
  background: var(--bg-elevated);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
}

.desk-seat {
  height: 64px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-default);
  background: var(--bg-surface);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  cursor: pointer;
  transition: all 0.15s;
}

.desk-seat:hover:not(.occupied) {
  border-color: var(--brand-amber);
  background: var(--bg-hover);
}

.desk-seat.selected {
  border-color: var(--brand-amber);
  background: var(--brand-amber-dim);
  color: var(--brand-amber);
}

.desk-seat.occupied {
  opacity: 0.35;
  cursor: not-allowed;
  background: #111;
}

/* OMR Canvas Detection Simulator */
.omr-scanner-canvas {
  width: 100%;
  max-height: 420px;
  background: #1e293b;
  border: 2px dashed var(--border-default);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.scan-laser-line {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--brand-amber);
  box-shadow: 0 0 10px var(--brand-amber);
  animation: scan-vertical 2.5s infinite linear;
}

@keyframes scan-vertical {
  0% { top: 0%; }
  50% { top: 100%; }
  100% { top: 0%; }
}

/* Responsive Breakpoints */
@media (max-width: 1024px) {
  .bullet-player-grid, .tcs-ion-container, .upsc-mode-container {
    grid-template-columns: 1fr;
    height: auto;
  }
  .terminal-sidebar {
    position: fixed;
    left: -250px;
    transition: left 0.3s;
  }
  .terminal-sidebar.open {
    left: 0;
  }
}