/* ============================================================================
   Exam Simulator Styles
   ============================================================================ */

/* Layout */
.exam-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.5rem;
  font-family: 'Space Grotesk', 'Inter', system-ui, sans-serif;
  color: var(--text);
  min-height: 100vh;
}

/* ---- Start Screen ---- */
.exam-start-screen {
  max-width: 640px;
  margin: 2rem auto;
}

.exam-start-screen h1 {
  font-family: 'Fraunces', serif;
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  margin: 0 0 0.5rem;
}

.exam-start-screen .exam-subtitle {
  color: var(--muted);
  margin: 0 0 2rem;
}

.exam-config {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.5rem;
  margin-bottom: 2rem;
}

.exam-config h2 {
  font-size: 1.15rem;
  margin: 0 0 1.25rem;
  color: var(--accent);
}

.config-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  gap: 1rem;
}

.config-row label {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--text);
}

.config-row select,
.config-row input[type="number"] {
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  padding: 0.5rem 0.75rem;
  font-size: 0.95rem;
  min-width: 120px;
  font-family: inherit;
}

.config-row select:focus,
.config-row input[type="number"]:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-soft, rgba(255, 138, 91, 0.18));
}

.exam-question-count {
  font-size: 1.1rem;
  color: var(--accent-2);
  margin-bottom: 1rem;
  font-weight: 600;
}

.btn-start-exam {
  display: block;
  width: 100%;
  padding: 0.9rem 1.5rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 0.75rem;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, transform 0.15s;
  font-family: inherit;
}

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

.btn-start-exam:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* Attempt history */
.exam-history {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.5rem;
}

.exam-history h2 {
  font-size: 1.15rem;
  margin: 0 0 1rem;
  color: var(--accent);
}

.exam-history-empty {
  color: var(--muted);
  font-style: italic;
}

.exam-history-trend {
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
  padding: 0.5rem 0.75rem;
  border-radius: 0.5rem;
  font-weight: 600;
}

.exam-history-trend.improving {
  color: var(--status-success-text);
  background: rgba(52, 211, 153, 0.1);
}

.exam-history-trend.declining {
  color: var(--status-error-text);
  background: rgba(248, 113, 113, 0.1);
}

.exam-history-trend.stable {
  color: var(--muted);
  background: rgba(148, 163, 184, 0.08);
}

.history-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.history-table th,
.history-table td {
  padding: 0.55rem 0.65rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.history-table th {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.history-pass { color: var(--status-success-text); }
.history-fail { color: var(--status-error-text); }

/* ---- Active Exam Screen ---- */
.exam-active-screen {
  display: none;
}

.exam-active-screen.visible {
  display: block;
}

.exam-top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  padding: 0.75rem 1.25rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.exam-timer {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--accent-2);
  min-width: 90px;
  text-align: center;
}

.exam-timer.warning {
  color: var(--status-error-text);
  animation: timer-pulse 1s ease-in-out infinite;
}

@keyframes timer-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

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

.btn-submit-exam {
  padding: 0.5rem 1.25rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 0.5rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.9rem;
  transition: background 0.2s;
}

.btn-submit-exam:hover {
  background: var(--accent-strong);
}

/* Exam body: sidebar navigator + question area */
.exam-body {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 1.25rem;
  align-items: start;
}

@media (max-width: 768px) {
  .exam-body {
    grid-template-columns: 1fr;
  }
  .exam-nav-sidebar {
    order: 2;
  }
  .exam-question-area {
    order: 1;
  }
}

/* Navigator sidebar */
.exam-nav-sidebar {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  padding: 1rem;
  position: sticky;
  top: 1rem;
}

.exam-nav-sidebar h3 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  margin: 0 0 0.75rem;
}

.exam-nav-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.35rem;
}

.exam-nav-btn {
  width: 100%;
  aspect-ratio: 1;
  border: 1px solid var(--border);
  border-radius: 0.35rem;
  background: var(--bg);
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
  padding: 0;
  font-family: inherit;
}

.exam-nav-btn:hover {
  border-color: var(--accent);
  color: var(--text);
}

.exam-nav-btn.current {
  border-color: var(--accent);
  background: var(--accent-soft, rgba(255, 138, 91, 0.18));
  color: var(--accent);
}

.exam-nav-btn.answered {
  background: rgba(52, 211, 153, 0.15);
  border-color: rgba(52, 211, 153, 0.4);
  color: var(--status-success-text);
}

.exam-nav-btn.flagged {
  position: relative;
  border-color: var(--status-warning-text);
  color: var(--status-warning-text);
}

.exam-nav-btn.flagged::after {
  content: '';
  position: absolute;
  top: 2px;
  right: 2px;
  width: 6px;
  height: 6px;
  background: var(--status-warning-text);
  border-radius: 50%;
}

.exam-nav-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.75rem;
  font-size: 0.7rem;
  color: var(--muted);
}

.exam-nav-legend span {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.legend-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.legend-dot.answered { background: var(--status-success-text); }
.legend-dot.flagged { background: var(--status-warning-text); }
.legend-dot.current { background: var(--accent); }

/* Question area */
.exam-question-area {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.75rem;
  min-height: 350px;
}

.exam-question-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.exam-question-number {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.exam-question-category {
  font-size: 0.8rem;
  color: var(--muted);
  background: var(--chip-bg, rgba(15, 23, 42, 0.55));
  padding: 0.25rem 0.6rem;
  border-radius: 0.35rem;
  border: 1px solid var(--chip-border, rgba(148, 163, 184, 0.3));
}

.exam-question-text {
  font-size: 1.05rem;
  line-height: 1.65;
  margin-bottom: 1.5rem;
  color: var(--text);
}

.exam-question-text pre {
  background: var(--code-bg);
  border-radius: 0.5rem;
  padding: 1rem;
  overflow-x: auto;
  margin: 0.75rem 0;
  border: 1px solid var(--border);
}

.exam-question-text code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.88rem;
}

.exam-question-text p code {
  background: var(--code-bg);
  padding: 0.15rem 0.4rem;
  border-radius: 0.25rem;
  font-size: 0.88em;
}

/* Answer options */
.exam-options {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-bottom: 1.5rem;
}

.exam-option-label {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.85rem 1rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 0.6rem;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
  line-height: 1.5;
}

.exam-option-label:hover {
  border-color: var(--accent);
  background: var(--accent-soft, rgba(255, 138, 91, 0.06));
}

.exam-option-label.selected {
  border-color: var(--accent);
  background: var(--accent-soft, rgba(255, 138, 91, 0.12));
}

.exam-option-label input[type="radio"],
.exam-option-label input[type="checkbox"] {
  margin-top: 0.2rem;
  accent-color: var(--accent);
  flex-shrink: 0;
}

.exam-option-text {
  flex: 1;
  color: var(--text);
  font-size: 0.95rem;
}

.exam-option-text code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.88em;
  background: var(--code-bg);
  padding: 0.1rem 0.35rem;
  border-radius: 0.2rem;
}

.exam-option-text pre {
  background: var(--code-bg);
  border-radius: 0.5rem;
  padding: 0.75rem;
  overflow-x: auto;
  margin: 0.5rem 0 0;
}

/* ---- MCQ (Multiple-Choice Question) Styles ---- */
.exam-mcq {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-bottom: 1.5rem;
}

.exam-mcq-instruction {
  font-size: 0.9rem;
  color: var(--muted);
  font-weight: 600;
  margin: 0 0 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.exam-mcq-option {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  border: 2px solid var(--border, rgba(148, 163, 184, 0.25));
  border-radius: 0.6rem;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  min-height: 44px;
  line-height: 1.5;
  user-select: none;
}

.exam-mcq-option:hover {
  border-color: var(--accent);
  background: var(--accent-soft, rgba(255, 138, 91, 0.06));
}

.exam-mcq-option.selected {
  border-color: var(--accent);
  background: var(--accent-soft, rgba(255, 138, 91, 0.12));
}

.exam-mcq-option input[type="radio"],
.exam-mcq-option input[type="checkbox"] {
  margin-top: 0.2rem;
  accent-color: var(--accent);
  flex-shrink: 0;
  width: 18px;
  height: 18px;
}

.exam-mcq-letter {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--bg, rgba(15, 23, 42, 0.55));
  border: 2px solid var(--border, rgba(148, 163, 184, 0.25));
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--muted);
  flex-shrink: 0;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
}

.exam-mcq-option.selected .exam-mcq-letter {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.exam-mcq-text {
  flex: 1;
  color: var(--text);
  font-size: 0.95rem;
}

.exam-mcq-text code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.88em;
  background: var(--code-bg);
  padding: 0.1rem 0.35rem;
  border-radius: 0.2rem;
}

.exam-mcq-text pre {
  background: var(--code-bg);
  border-radius: 0.5rem;
  padding: 0.75rem;
  overflow-x: auto;
  margin: 0.5rem 0 0;
}

/* MCQ Review Mode */
.exam-mcq.review-mode .exam-mcq-option {
  cursor: default;
  position: relative;
}

.exam-mcq.review-mode .exam-mcq-option.correct {
  border-color: var(--status-success-text, #34d399);
  background: rgba(52, 211, 153, 0.08);
}

.exam-mcq.review-mode .exam-mcq-option.correct .exam-mcq-letter {
  background: var(--status-success-text, #34d399);
  border-color: var(--status-success-text, #34d399);
  color: #fff;
}

.exam-mcq.review-mode .exam-mcq-option.incorrect {
  border-color: var(--status-error-text, #f87171);
  background: rgba(248, 113, 113, 0.08);
}

.exam-mcq.review-mode .exam-mcq-option.incorrect .exam-mcq-letter {
  background: var(--status-error-text, #f87171);
  border-color: var(--status-error-text, #f87171);
  color: #fff;
}

.exam-mcq-status-icon {
  margin-left: auto;
  font-size: 1.1rem;
  font-weight: 700;
  flex-shrink: 0;
  line-height: 1;
}

.exam-mcq-status-icon.correct-icon {
  color: var(--status-success-text, #34d399);
}

.exam-mcq-status-icon.incorrect-icon {
  color: var(--status-error-text, #f87171);
}

/* Free-response textarea (fallback for non-multiple-choice) */
.exam-free-response {
  width: 100%;
  min-height: 120px;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 0.6rem;
  padding: 0.85rem 1rem;
  font-family: inherit;
  font-size: 0.95rem;
  resize: vertical;
  margin-bottom: 1.5rem;
}

.exam-free-response:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-soft, rgba(255, 138, 91, 0.18));
}

/* Question actions */
.exam-question-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.exam-btn {
  padding: 0.55rem 1.1rem;
  border-radius: 0.5rem;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  border: 1px solid var(--border);
  transition: all 0.15s;
  font-family: inherit;
  background: var(--bg);
  color: var(--text);
}

.exam-btn:hover {
  border-color: var(--accent);
}

.exam-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

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

.exam-btn.primary:hover {
  background: var(--accent-strong);
}

.exam-btn.flag {
  border-color: var(--status-warning-text);
  color: var(--status-warning-text);
}

.exam-btn.flag.active {
  background: rgba(251, 191, 36, 0.15);
}

/* ---- Results Screen ---- */
.exam-results-screen {
  display: none;
  max-width: 900px;
  margin: 0 auto;
}

.exam-results-screen.visible {
  display: block;
}

.results-summary {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 2rem;
  text-align: center;
  margin-bottom: 1.5rem;
}

.results-score {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  margin: 0.5rem 0;
  font-family: 'Fraunces', serif;
}

.results-score.pass { color: var(--status-success-text); }
.results-score.fail { color: var(--status-error-text); }

.results-badge {
  display: inline-block;
  padding: 0.4rem 1.25rem;
  border-radius: 2rem;
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.results-badge.pass {
  background: rgba(52, 211, 153, 0.15);
  color: var(--status-success-text);
  border: 1px solid rgba(52, 211, 153, 0.3);
}

.results-badge.fail {
  background: rgba(248, 113, 113, 0.15);
  color: var(--status-error-text);
  border: 1px solid rgba(248, 113, 113, 0.3);
}

.results-stats {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-top: 1rem;
  flex-wrap: wrap;
}

.results-stat {
  text-align: center;
}

.results-stat-value {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text);
}

.results-stat-label {
  font-size: 0.8rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* Results controls */
.results-controls {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

/* Review list */
.results-review-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.review-item {
  background: var(--card);
  border-radius: 0.75rem;
  padding: 1.25rem;
  border-left: 4px solid;
}

.review-item.correct {
  border-left-color: var(--status-success-text);
}

.review-item.incorrect {
  border-left-color: var(--status-error-text);
}

.review-item.skipped {
  border-left-color: var(--muted);
}

.review-item-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}

.review-item-number {
  font-weight: 700;
  font-size: 0.85rem;
}

.review-item-number.correct { color: var(--status-success-text); }
.review-item-number.incorrect { color: var(--status-error-text); }
.review-item-number.skipped { color: var(--muted); }

.review-item-badge {
  font-size: 0.75rem;
  padding: 0.2rem 0.6rem;
  border-radius: 0.3rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.review-item-badge.correct {
  background: rgba(52, 211, 153, 0.12);
  color: var(--status-success-text);
}

.review-item-badge.incorrect {
  background: rgba(248, 113, 113, 0.12);
  color: var(--status-error-text);
}

.review-item-badge.skipped {
  background: rgba(148, 163, 184, 0.12);
  color: var(--muted);
}

.review-question-text {
  font-size: 0.95rem;
  line-height: 1.55;
  margin-bottom: 0.75rem;
  color: var(--text);
}

.review-question-text pre {
  background: var(--code-bg);
  border-radius: 0.5rem;
  padding: 0.75rem;
  overflow-x: auto;
  margin: 0.5rem 0;
  border: 1px solid var(--border);
}

.review-question-text code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
}

.review-answers {
  font-size: 0.9rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.review-answer-row {
  padding: 0.4rem 0.6rem;
  border-radius: 0.35rem;
}

.review-answer-row.user-answer {
  background: rgba(248, 113, 113, 0.08);
  border: 1px solid rgba(248, 113, 113, 0.2);
}

.review-answer-row.correct-answer {
  background: rgba(52, 211, 153, 0.08);
  border: 1px solid rgba(52, 211, 153, 0.2);
}

.review-answer-label {
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-right: 0.5rem;
}

.review-answer-label.yours { color: var(--status-error-text); }
.review-answer-label.correct { color: var(--status-success-text); }

.review-explanation {
  margin-top: 0.75rem;
  padding: 0.75rem;
  background: var(--bg);
  border-radius: 0.5rem;
  border: 1px solid var(--border);
  font-size: 0.9rem;
  line-height: 1.55;
  color: var(--muted);
}

.review-explanation pre {
  background: var(--code-bg);
  border-radius: 0.5rem;
  padding: 0.75rem;
  overflow-x: auto;
  margin: 0.5rem 0;
}

.review-explanation code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
}

/* ---- Confirmation Dialog ---- */
.exam-dialog-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 9999;
  justify-content: center;
  align-items: center;
}

.exam-dialog-overlay.visible {
  display: flex;
}

.exam-dialog {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 2rem;
  max-width: 420px;
  width: 90%;
  text-align: center;
}

.exam-dialog h3 {
  margin: 0 0 0.75rem;
  font-size: 1.2rem;
}

.exam-dialog p {
  color: var(--muted);
  margin: 0 0 1.5rem;
  font-size: 0.95rem;
  line-height: 1.5;
}

.exam-dialog-actions {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
}

/* ---- No Questions State ---- */
.exam-empty {
  text-align: center;
  padding: 4rem 1rem;
  color: var(--muted);
}

.exam-empty h2 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--text);
}

/* ---- Breadcrumb ---- */
.exam-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
  font-size: 0.88rem;
  color: var(--muted);
  flex-wrap: wrap;
}

.exam-breadcrumb a {
  color: var(--accent);
  text-decoration: none;
}

.exam-breadcrumb a:hover {
  text-decoration: underline;
}

.exam-breadcrumb .sep {
  color: var(--border);
}

/* ---- Responsive ---- */
@media (max-width: 600px) {
  .exam-container {
    padding: 1rem;
  }

  .exam-top-bar {
    flex-direction: column;
    align-items: stretch;
    text-align: center;
  }

  .config-row {
    flex-direction: column;
    align-items: stretch;
    gap: 0.35rem;
  }

  .exam-question-actions {
    flex-direction: column;
  }

  .exam-question-actions .exam-btn {
    width: 100%;
    text-align: center;
  }

  .results-stats {
    gap: 1rem;
  }

  .exam-dialog-actions {
    flex-direction: column;
  }

  .exam-nav-grid {
    grid-template-columns: repeat(5, 1fr);
  }
}

@media (max-width: 480px) {
  .exam-nav-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ---- Pass Threshold on Start Screen ---- */
.exam-pass-threshold {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--accent-2, #60a5fa);
  margin: 0.75rem 0 1rem;
  padding: 0.5rem 0.75rem;
  background: var(--accent-soft, rgba(96, 165, 250, 0.1));
  border-radius: 0.5rem;
  border: 1px solid rgba(96, 165, 250, 0.25);
  text-align: center;
}

/* ---- Category Breakdown on Results ---- */
.exam-category-breakdown {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.exam-category-breakdown h3 {
  font-size: 1.15rem;
  margin: 0 0 1rem;
  color: var(--accent);
}

.exam-cat-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--border);
}

.exam-cat-row:last-child {
  border-bottom: none;
}

.exam-cat-name {
  min-width: 160px;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text);
  flex-shrink: 0;
}

.exam-cat-bar-track {
  flex: 1;
  height: 10px;
  background: var(--bg);
  border-radius: 5px;
  overflow: hidden;
  min-width: 80px;
}

.exam-cat-bar {
  height: 100%;
  border-radius: 5px;
  transition: width 0.4s ease;
}

.exam-cat-bar.exam-cat-red {
  background: var(--status-error-text, #f87171);
}

.exam-cat-bar.exam-cat-yellow {
  background: var(--status-warning-text, #fbbf24);
}

.exam-cat-bar.exam-cat-green {
  background: var(--status-success-text, #34d399);
}

.exam-cat-pct {
  font-weight: 700;
  font-size: 0.9rem;
  min-width: 40px;
  text-align: right;
}

.exam-cat-pct.exam-cat-red {
  color: var(--status-error-text, #f87171);
}

.exam-cat-pct.exam-cat-yellow {
  color: var(--status-warning-text, #fbbf24);
}

.exam-cat-pct.exam-cat-green {
  color: var(--status-success-text, #34d399);
}

.exam-cat-score {
  font-size: 0.85rem;
  color: var(--muted);
  min-width: 35px;
  text-align: center;
}

.exam-cat-study-link {
  font-size: 0.85rem;
  color: var(--accent);
  text-decoration: none;
  white-space: nowrap;
  font-weight: 500;
}

.exam-cat-study-link:hover {
  text-decoration: underline;
}

@media (max-width: 600px) {
  .exam-cat-row {
    flex-wrap: wrap;
    gap: 0.4rem;
  }

  .exam-cat-name {
    min-width: 100%;
  }

  .exam-cat-bar-track {
    min-width: 60px;
  }
}

/* ── Reduced motion ─────────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .exam-timer.warning,
  .btn-start-exam,
  .btn-submit-exam,
  .exam-btn,
  .exam-nav-btn,
  .exam-option-label,
  .exam-mcq-option,
  .exam-mcq-letter {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}