/* ==========================================================================
   THI THỬ BẰNG LÁI XE CALIFORNIA (DMV) - TIẾNG VIỆT
   Thiết kế giao diện mô phỏng màn hình cảm ứng TouchScreen DMV California
   Thân thiện với người lớn tuổi: Chữ to rõ, màu tương phản cao, phím bấm lớn
   ========================================================================== */

:root {
  /* DMV California Colors */
  --dmv-navy: #002b49;
  --dmv-blue: #004b87;
  --dmv-blue-light: #e6f0fa;
  --dmv-gold: #ffcc00;
  --dmv-gold-dark: #b28900;
  
  /* Status Colors */
  --color-correct: #16a34a;
  --color-correct-bg: #f0fdf4;
  --color-correct-border: #86efac;
  --color-wrong: #dc2626;
  --color-wrong-bg: #fef2f2;
  --color-wrong-border: #fca5a5;
  --color-skip: #d97706;
  --color-skip-bg: #fffbeb;
  
  /* Neutral Palette */
  --bg-page: #f8fafc;
  --bg-card: #ffffff;
  --text-main: #0f172a;
  --text-muted: #475569;
  --border-light: #cbd5e1;
  --border-dark: #94a3b8;
  
  /* Sizing and Shadows */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
  
  /* Dynamic Font Sizing for Mom / Seniors */
  --font-base: 18px;
  --font-q-title: 1.45rem;
  --font-option: 1.25rem;
}

/* Font Size Modifiers (Elderly Friendly) */
body.text-size-small {
  --font-base: 17px;
  --font-q-title: 1.35rem;
  --font-option: 1.15rem;
}

body.text-size-medium {
  --font-base: 20px;
  --font-q-title: 1.55rem;
  --font-option: 1.3rem;
}

body.text-size-large {
  --font-base: 23px;
  --font-q-title: 1.8rem;
  --font-option: 1.5rem;
}

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

html {
  font-size: var(--font-base);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bg-page);
  color: var(--text-main);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Selection */
::selection {
  background: rgba(0, 75, 135, 0.2);
  color: var(--dmv-navy);
}

/* Custom Themed Scrollbar */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
::-webkit-scrollbar-track {
  background: #f1f5f9;
}
::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover {
  background: #94a3b8;
}

/* Focus Visible Indicators (WCAG 2.1 AA) */
:focus-visible {
  outline: 3px solid var(--dmv-blue);
  outline-offset: 3px;
}

.option-btn:focus-visible {
  outline: 3px solid var(--dmv-blue);
  outline-offset: 2px;
  border-color: var(--dmv-blue);
}

.btn-confirm:focus-visible,
.btn-skip:focus-visible,
.btn-secondary:focus-visible,
.btn-nav-back:focus-visible,
.test-card:focus-visible,
.mode-card:focus-visible,
.audio-btn:focus-visible,
.btn-toggle:focus-visible {
  outline: 3px solid #b28900;
  outline-offset: 2px;
}

/* --------------------------------------------------------------------------
   HEADER & DMV BANNER
   -------------------------------------------------------------------------- */
.dmv-header {
  background: linear-gradient(135deg, var(--dmv-navy) 0%, #003865 100%);
  color: #ffffff;
  padding: 12px 20px;
  box-shadow: 0 3px 10px rgba(0, 43, 73, 0.25);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-container {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 15px;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 14px;
  cursor: pointer;
  user-select: none;
  transition: opacity 0.2s ease;
}

.header-brand:hover {
  opacity: 0.92;
}

.dmv-seal {
  width: 58px;
  height: 58px;
  flex-shrink: 0;
}

.seal-svg {
  width: 100%;
  height: 100%;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.3));
}

.header-titles .main-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: #ffffff;
  letter-spacing: 0.5px;
  line-height: 1.25;
}

.header-titles .sub-title {
  font-size: 0.85rem;
  color: var(--dmv-gold);
  font-weight: 500;
  margin-top: 2px;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.control-group {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.12);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.control-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: #e2e8f0;
}

.btn-group {
  display: flex;
  gap: 4px;
}

.btn-toggle {
  background: transparent;
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.4);
  padding: 4px 10px;
  font-size: 0.9rem;
  font-weight: 700;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-toggle.active, .btn-toggle:hover {
  background: var(--dmv-gold);
  color: var(--dmv-navy);
  border-color: var(--dmv-gold);
}

.btn-icon, .btn-secondary, .btn-primary, .btn-warning, .btn-success {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
  text-decoration: none;
}

.btn-icon {
  background: rgba(255, 255, 255, 0.15);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.25);
}

.btn-icon:hover {
  background: rgba(255, 255, 255, 0.25);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.2);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
  background: #ffffff;
  color: var(--dmv-navy);
}

/* --------------------------------------------------------------------------
   LAYOUT CONTAINER & VIEWS
   -------------------------------------------------------------------------- */
.app-container {
  max-width: 1100px;
  width: 100%;
  margin: 20px auto;
  padding: 0 16px 40px;
  flex: 1;
}

.app-view {
  display: none;
}

.app-view.active {
  display: block;
  animation: fadeIn 0.25s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* --------------------------------------------------------------------------
   VIEW 1: HOME SCREEN
   -------------------------------------------------------------------------- */
.home-welcome {
  margin-bottom: 24px;
}

.welcome-card {
  background: var(--bg-card);
  border: 2px solid #e2e8f0;
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.welcome-header h2 {
  font-size: 1.4rem;
  color: var(--dmv-navy);
  font-weight: 800;
  margin-bottom: 8px;
}

.welcome-header p {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.6;
}

.dmv-rules-banner {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  margin-top: 18px;
  background: #f8fafc;
  padding: 16px;
  border-radius: var(--radius-sm);
  border: 2px solid #cbd5e1;
}

.rule-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.rule-icon {
  font-size: 1.5rem;
  line-height: 1;
}

.rule-item strong {
  display: block;
  color: var(--dmv-navy);
  font-size: 1.02rem;
  margin-bottom: 2px;
}

.rule-item span {
  font-size: 0.95rem;
  color: var(--text-muted);
}

/* Feature Modes Grid (Random, Wrong Review, Handbook) */
.feature-modes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin-bottom: 35px;
}

.mode-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 24px;
  border: 2px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: all 0.25s ease;
  position: relative;
  display: flex;
  flex-direction: column;
}

.mode-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--dmv-blue);
}

.mode-card.primary-mode {
  border-color: var(--dmv-blue);
  background: linear-gradient(180deg, #ffffff 0%, #f0f7ff 100%);
}

.mode-badge {
  position: absolute;
  top: 14px;
  right: 14px;
  background: var(--dmv-blue);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 4px 8px;
  border-radius: 4px;
  letter-spacing: 0.5px;
}

.review-mode .mode-badge {
  background: #e11d48;
}

.handbook-mode .mode-badge {
  background: #0369a1;
}

.mode-icon {
  font-size: 2.3rem;
  margin-bottom: 12px;
}

.mode-card h3 {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--dmv-navy);
  margin-bottom: 8px;
}

.mode-card p {
  color: var(--text-muted);
  font-size: 0.98rem;
  margin-bottom: 20px;
  flex: 1;
}

.btn-start-mode {
  background: var(--dmv-blue);
  color: #ffffff;
  border: none;
  padding: 12px 18px;
  font-size: 1.05rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  cursor: pointer;
  width: 100%;
  text-align: center;
  transition: background 0.2s;
}

.btn-start-mode:hover {
  background: var(--dmv-navy);
}

.review-mode .btn-start-mode {
  background: #e11d48;
}
.review-mode .btn-start-mode:hover {
  background: #be123c;
}

/* Tests Grid */
.section-heading {
  margin-bottom: 16px;
}

.section-heading h2 {
  font-size: 1.4rem;
  color: var(--dmv-navy);
  font-weight: 800;
}

.section-heading p {
  color: var(--text-muted);
  font-size: 1rem;
}

.tests-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}

.test-card-btn {
  background: var(--bg-card);
  border: 2px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 20px;
  text-align: left;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.test-card-btn:hover {
  border-color: var(--dmv-blue);
  background: var(--dmv-blue-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.test-card-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--dmv-navy);
  margin-bottom: 6px;
}

.test-card-meta {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.test-card-status {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid #e2e8f0;
  padding-top: 10px;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--dmv-blue);
}

/* --------------------------------------------------------------------------
   VIEW 2: DMV TOUCHSCREEN TEST TERMINAL
   -------------------------------------------------------------------------- */
.terminal-status-bar {
  background: var(--dmv-navy);
  color: #ffffff;
  padding: 14px 20px;
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
}

.status-left {
  display: flex;
  align-items: center;
  gap: 14px;
}

.test-title-badge {
  background: var(--dmv-gold);
  color: var(--dmv-navy);
  font-size: 0.95rem;
  font-weight: 800;
  padding: 5px 12px;
  border-radius: 6px;
  letter-spacing: 0.5px;
}

.question-tracker {
  font-size: 1.15rem;
  font-weight: 700;
}

.tracker-val {
  font-size: 1.45rem;
  color: var(--dmv-gold);
  font-weight: 900;
}

.tracker-total {
  color: #cbd5e1;
  font-size: 1.05rem;
}

.status-center {
  display: flex;
  gap: 12px;
}

.score-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 30px;
  font-size: 0.95rem;
  font-weight: 700;
}

.pill-correct {
  background: #14532d;
  color: #86efac;
  border: 1px solid #22c55e;
}

.pill-wrong {
  background: #7f1d1d;
  color: #fca5a5;
  border: 1px solid #ef4444;
}

.score-number {
  font-size: 1.25rem;
  font-weight: 900;
}

.score-limit {
  font-size: 0.85rem;
  opacity: 0.9;
  font-weight: 500;
}

.status-right {
  display: flex;
  gap: 10px;
}

.btn-audio-listen {
  background: #1e3a8a;
  color: #ffffff;
  border: 1px solid #3b82f6;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.2s;
}

.btn-audio-listen:hover {
  background: #2563eb;
}

.btn-exit {
  background: rgba(255, 255, 255, 0.15);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.3);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
}

.btn-exit:hover {
  background: rgba(255, 255, 255, 0.3);
}

.progress-bar-container {
  height: 8px;
  background: #e2e8f0;
  width: 100%;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, #3b82f6 0%, var(--dmv-blue) 100%);
  transition: width 0.3s ease;
}

/* Question Card */
.question-card {
  background: var(--bg-card);
  border: 3px solid var(--dmv-navy);
  border-top: none;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  padding: 28px 32px;
  box-shadow: var(--shadow-lg);
}

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

.q-badge {
  display: inline-block;
  background: #e2e8f0;
  color: var(--dmv-navy);
  font-size: 0.9rem;
  font-weight: 800;
  padding: 4px 10px;
  border-radius: 6px;
  margin-bottom: 10px;
  letter-spacing: 0.5px;
}

.q-text {
  font-size: var(--font-q-title);
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.45;
}

/* Question Image Container */
.question-image-box {
  background: #f8fafc;
  border: 2px solid #e2e8f0;
  border-radius: var(--radius-sm);
  padding: 16px;
  text-align: center;
  margin-bottom: 24px;
  min-height: 180px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.question-image-box img {
  max-width: 100%;
  max-height: 300px;
  object-fit: contain;
  border-radius: 6px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

.image-caption {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 6px;
  font-style: italic;
}

/* Options Container (Touchscreen Buttons) */
.options-container {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 28px;
}

.option-btn {
  background: #ffffff;
  border: 3px solid #cbd5e1;
  border-radius: var(--radius-md);
  padding: 18px 24px;
  display: flex;
  align-items: center;
  gap: 18px;
  cursor: pointer;
  text-align: left;
  font-size: var(--font-option);
  color: var(--text-main);
  transition: all 0.2s ease;
  user-select: none;
  outline: none;
  min-height: 72px;
}

.option-btn:hover:not(:disabled) {
  border-color: var(--dmv-blue);
  background: var(--dmv-blue-light);
  transform: translateX(4px);
}

.option-letter {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: #f1f5f9;
  border: 2px solid #94a3b8;
  border-radius: 50%;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--dmv-navy);
  flex-shrink: 0;
  transition: all 0.2s;
}

.option-text {
  flex: 1;
  font-weight: 600;
  line-height: 1.45;
}

/* State: Selected */
.option-btn.selected {
  border-color: var(--dmv-blue);
  background: #ebf5ff;
  box-shadow: 0 0 0 3px rgba(0, 75, 135, 0.25);
}

.option-btn.selected .option-letter {
  background: var(--dmv-blue);
  color: #ffffff;
  border-color: var(--dmv-blue);
}

/* State: Correct Answer */
.option-btn.state-correct {
  border-color: var(--color-correct) !important;
  background: var(--color-correct-bg) !important;
  color: #14532d !important;
  box-shadow: 0 0 0 3px rgba(22, 163, 74, 0.3) !important;
}

.option-btn.state-correct .option-letter {
  background: var(--color-correct) !important;
  color: #ffffff !important;
  border-color: var(--color-correct) !important;
}

/* State: Wrong Answer Selected */
.option-btn.state-wrong {
  border-color: var(--color-wrong) !important;
  background: var(--color-wrong-bg) !important;
  color: #7f1d1d !important;
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.3) !important;
}

.option-btn.state-wrong .option-letter {
  background: var(--color-wrong) !important;
  color: #ffffff !important;
  border-color: var(--color-wrong) !important;
}

/* Disabled state */
.option-btn:disabled {
  cursor: default;
}

/* Explanation Box */
.explanation-box {
  background: #fffbeb;
  border: 2px solid #fde68a;
  border-radius: var(--radius-sm);
  padding: 20px;
  margin-bottom: 26px;
  animation: fadeIn 0.3s ease;
}

.explanation-header {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1.15rem;
  color: #92400e;
  margin-bottom: 8px;
}

.explanation-content {
  color: #78350f;
  font-size: 1.08rem;
  line-height: 1.6;
  font-weight: 500;
}

.explanation-image-box {
  margin-top: 14px;
  text-align: center;
}

.explanation-image-box img {
  max-width: 100%;
  max-height: 250px;
  border-radius: 6px;
  border: 1px solid #fcd34d;
}

/* Action Bar */
.terminal-action-bar {
  display: flex;
  gap: 16px;
  justify-content: space-between;
  border-top: 2px solid #e2e8f0;
  padding-top: 22px;
}

.btn-terminal {
  padding: 16px 26px;
  border-radius: var(--radius-md);
  font-size: 1.2rem;
  font-weight: 800;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  transition: all 0.2s ease;
  border: none;
}

.btn-skip {
  background: #f1f5f9;
  color: #475569;
  border: 2px solid #94a3b8;
  flex: 1;
  max-width: 340px;
}

.btn-skip:hover:not(:disabled) {
  background: #e2e8f0;
  color: #1e293b;
  border-color: #64748b;
}

.btn-confirm {
  background: var(--dmv-blue);
  color: #ffffff;
  flex: 2;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
}

.btn-confirm:hover:not(:disabled) {
  background: var(--dmv-navy);
  transform: translateY(-2px);
  box-shadow: 0 6px 14px rgba(0, 0, 0, 0.2);
}

.btn-confirm:disabled, .btn-skip:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

/* Next Question Button Style when answer is submitted */
.btn-confirm.is-next {
  background: #15803d;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
}

.btn-confirm.is-next:hover {
  background: #166534;
}

/* --------------------------------------------------------------------------
   VIEW 3: RESULTS SCREEN
   -------------------------------------------------------------------------- */
.result-card {
  background: var(--bg-card);
  border: 2px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 36px 30px;
  box-shadow: var(--shadow-md);
}

.result-banner {
  text-align: center;
  padding: 24px;
  border-radius: var(--radius-md);
  margin-bottom: 28px;
}

.result-banner.pass {
  background: linear-gradient(180deg, #ecfdf5 0%, #d1fae5 100%);
  border: 3px solid #10b981;
  color: #065f46;
}

.result-banner.fail {
  background: linear-gradient(180deg, #fef2f2 0%, #fee2e2 100%);
  border: 3px solid #ef4444;
  color: #991b1b;
}

.result-badge-icon {
  font-size: 3.5rem;
  margin-bottom: 8px;
}

.result-banner h2 {
  font-size: 1.85rem;
  font-weight: 900;
  margin-bottom: 6px;
}

.result-banner p {
  font-size: 1.15rem;
  font-weight: 600;
}

.result-stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 30px;
}

.stat-box {
  background: #f8fafc;
  border: 2px solid #e2e8f0;
  border-radius: var(--radius-sm);
  padding: 18px;
  text-align: center;
}

.stat-value {
  display: block;
  font-size: 2.1rem;
  font-weight: 900;
  line-height: 1.2;
}

.stat-name {
  font-size: 0.92rem;
  color: var(--text-muted);
  font-weight: 700;
}

.stat-correct .stat-value { color: var(--color-correct); }
.stat-wrong .stat-value { color: var(--color-wrong); }
.stat-score .stat-value { color: var(--dmv-blue); }
.stat-status .stat-value { color: var(--dmv-navy); }

.result-action-buttons {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 36px;
  border-bottom: 2px solid #e2e8f0;
  padding-bottom: 28px;
}

.btn-primary { background: var(--dmv-blue); color: #ffffff; }
.btn-primary:hover { background: var(--dmv-navy); }

.btn-warning { background: #b45309; color: #ffffff; }
.btn-warning:hover { background: #92400e; }

.btn-success { background: #15803d; color: #ffffff; }
.btn-success:hover { background: #166534; }

/* Breakdown in Result View */
.breakdown-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
}

.breakdown-header h3 {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--dmv-navy);
}

.breakdown-filters {
  display: flex;
  gap: 8px;
}

.btn-filter {
  background: #f1f5f9;
  border: 1px solid #cbd5e1;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.92rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-filter.active {
  background: var(--dmv-navy);
  color: #ffffff;
  border-color: var(--dmv-navy);
}

.breakdown-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.breakdown-item {
  border: 2px solid #e2e8f0;
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  background: #ffffff;
  content-visibility: auto;
  contain-intrinsic-size: 0 140px;
}

.breakdown-item.is-correct {
  border-color: #86efac;
}

.breakdown-item.is-wrong {
  border-color: #fca5a5;
  background: #fffbfa;
}

.breakdown-item-header {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 10px;
}

.breakdown-status-icon {
  font-size: 1.2rem;
  line-height: 1.2;
}

.breakdown-q-title {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text-main);
}

.breakdown-answers {
  margin-top: 8px;
  font-size: 0.98rem;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.ans-line {
  padding: 4px 8px;
  border-radius: 4px;
}

.ans-line.user-wrong {
  background: #fee2e2;
  color: #991b1b;
}

.ans-line.correct-ans {
  background: #dcfce7;
  color: #166534;
  font-weight: 700;
}

.breakdown-expl {
  margin-top: 10px;
  font-size: 0.92rem;
  background: #f8fafc;
  padding: 10px;
  border-radius: 4px;
  color: var(--text-muted);
  border-left: 3px solid #cbd5e1;
}

/* --------------------------------------------------------------------------
   VIEW 4: COMPLETE 280 QUESTIONS HANDBOOK
   -------------------------------------------------------------------------- */
.handbook-header {
  background: var(--bg-card);
  border: 2px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 20px;
}

.handbook-title-area h2 {
  font-size: 1.4rem;
  color: var(--dmv-navy);
  font-weight: 800;
  margin-bottom: 4px;
}

.handbook-title-area p {
  color: var(--text-muted);
  font-size: 1rem;
  margin-bottom: 18px;
}

.handbook-controls {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.search-input {
  flex: 2;
  min-width: 260px;
  padding: 12px 16px;
  font-size: 1.05rem;
  border: 2px solid var(--border-light);
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color 0.2s;
}

.search-input:focus {
  border-color: var(--dmv-blue);
}

.select-input {
  flex: 1;
  min-width: 180px;
  padding: 12px 16px;
  font-size: 1rem;
  border: 2px solid var(--border-light);
  border-radius: var(--radius-sm);
  background: #ffffff;
  font-weight: 600;
  color: var(--text-main);
  outline: none;
}

.handbook-summary-bar {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  padding: 0 4px;
}

.handbook-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.handbook-card {
  background: var(--bg-card);
  border: 2px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 22px;
  box-shadow: var(--shadow-sm);
  content-visibility: auto;
  contain-intrinsic-size: 0 200px;
}

.handbook-card-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.handbook-test-badge {
  background: var(--dmv-blue);
  color: #ffffff;
  font-size: 0.8rem;
  font-weight: 800;
  padding: 3px 8px;
  border-radius: 4px;
}

.handbook-q-badge {
  background: #f1f5f9;
  color: var(--text-muted);
  font-size: 0.82rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
}

.handbook-q-text {
  font-size: 1.22rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 16px;
  line-height: 1.45;
}

.handbook-img-box {
  margin: 12px 0;
  text-align: center;
}

.handbook-img-box img {
  max-height: 200px;
  max-width: 100%;
  border-radius: 6px;
  border: 1px solid #e2e8f0;
}

.handbook-options {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 14px;
}

.handbook-opt-item {
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  font-size: 1.02rem;
  font-weight: 600;
}

.handbook-opt-item.is-correct-opt {
  background: #f0fdf4;
  border-color: #86efac;
  color: #166534;
  font-weight: 700;
}

.handbook-expl-box {
  background: #fffbeb;
  border: 1px solid #fde68a;
  padding: 12px 14px;
  border-radius: 4px;
  font-size: 0.95rem;
  color: #78350f;
  margin-top: 10px;
}

/* --------------------------------------------------------------------------
   TOAST POPUP NOTIFICATION
   -------------------------------------------------------------------------- */
.toast-popup {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: rgba(15, 23, 42, 0.94);
  color: #ffffff;
  padding: 14px 24px;
  border-radius: 30px;
  font-size: 1.05rem;
  font-weight: 700;
  box-shadow: 0 10px 25px rgba(0,0,0,0.25);
  z-index: 1000;
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
}

.toast-popup.visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* --------------------------------------------------------------------------
   FOOTER
   -------------------------------------------------------------------------- */
.app-footer {
  margin-top: auto;
  background: #f1f5f9;
  border-top: 1px solid #cbd5e1;
  padding: 24px 20px;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.footer-container {
  max-width: 1000px;
  margin: 0 auto;
  line-height: 1.6;
}

.footer-sub {
  font-size: 0.85rem;
  color: #475569;
  margin-top: 4px;
}

/* --------------------------------------------------------------------------
   RESPONSIVE DESIGN (iPad & Mobile)
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
  .header-container {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }
  
  .header-controls {
    justify-content: flex-start;
    flex-wrap: wrap;
    gap: 8px;
  }
  
  .question-card {
    padding: 20px 16px;
  }
  
  .terminal-status-bar {
    padding: 12px 16px;
  }
  
  .terminal-action-bar {
    flex-direction: column-reverse;
    gap: 12px;
  }
  
  .btn-skip, .btn-confirm {
    max-width: 100%;
    width: 100%;
  }
  
  .option-btn {
    padding: 14px 16px;
    min-height: 64px;
  }
}

/* Small Mobile Phones (iPhone SE / <= 480px) */
@media (max-width: 480px) {
  .dmv-seal {
    width: 44px;
    height: 44px;
  }
  
  .header-titles .main-title {
    font-size: 1.15rem;
  }
  
  .header-titles .sub-title {
    font-size: 0.78rem;
  }
  
  .terminal-status-bar {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 10px;
    padding: 12px 14px;
  }
  
  .status-left {
    grid-column: 1;
    grid-row: 1;
  }
  
  .status-right {
    grid-column: 2;
    grid-row: 1;
    justify-content: flex-end;
  }
  
  .status-center {
    grid-column: 1 / -1;
    grid-row: 2;
    display: flex;
    justify-content: space-between;
    width: 100%;
    gap: 8px;
  }
  
  .score-pill {
    flex: 1;
    justify-content: center;
    padding: 6px 10px;
    font-size: 0.88rem;
  }

  .tests-grid {
    grid-template-columns: 1fr;
  }

  .result-action-buttons .btn-secondary {
    width: 100%;
    justify-content: center;
  }
  
  .handbook-controls {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }
  
  .search-input, .select-input {
    width: 100%;
    min-width: 0;
  }
}

/* --------------------------------------------------------------------------
   ACCESSIBILITY: REDUCED MOTION (WCAG 2.1 AA)
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  
  .app-view,
  .explanation-box,
  .toast-popup {
    animation: none !important;
  }
  
  .test-card,
  .mode-card,
  .option-btn,
  .btn-terminal,
  .btn-secondary {
    transition: none !important;
    transform: none !important;
  }
}