/* ========================================
   Legal AI Assessment Trainer
   Modern minimalist design system
   ======================================== */

:root {
  /* Color palette */
  --color-bg: #fafaf9;
  --color-surface: #ffffff;
  --color-text: #1c1917;
  --color-text-secondary: #57534e;
  --color-text-muted: #a8a29e;
  --color-border: #e7e5e4;
  --color-border-light: #f5f5f4;

  /* Accent colors by category */
  --color-tag: #3b82f6;
  --color-tag-light: #eff6ff;
  --color-tag-border: #bfdbfe;
  --color-tal: #8b5cf6;
  --color-tal-light: #f5f3ff;
  --color-tal-border: #c4b5fd;
  --color-tsg: #f59e0b;
  --color-tsg-light: #fffbeb;
  --color-tsg-border: #fde68a;
  --color-tsl: #10b981;
  --color-tsl-light: #ecfdf5;
  --color-tsl-border: #a7f3d0;

  /* Risk colors */
  --color-low: #22c55e;
  --color-low-light: #f0fdf4;
  --color-moderate: #f59e0b;
  --color-moderate-light: #fffbeb;
  --color-high: #ef4444;
  --color-high-light: #fef2f2;
  --color-noai: #6b7280;
  --color-noai-light: #f3f4f6;

  /* Risk border colors (matches category badge pattern) */
  --color-low-border: #86efac;
  --color-moderate-border: #fde68a;
  --color-high-border: #fca5a5;
  --color-noai-border: #d1d5db;

  /* Feedback */
  --color-correct: #16a34a;
  --color-correct-bg: #f0fdf4;
  --color-incorrect: #dc2626;
  --color-incorrect-bg: #fef2f2;
  --color-partial: #d97706;
  --color-partial-bg: #fffbeb;

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

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* Layout */
  --max-width: 72rem;
  --content-width: 48rem;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.04);

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
}

/* ---- Reset ---- */
*, *::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 {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.65;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main { flex: 1; }

a {
  color: var(--color-tag);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover { color: var(--color-tal); }

img { max-width: 100%; display: block; }

/* ---- Navigation ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 250, 249, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 3.5rem;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 600;
  font-size: 1rem;
  color: var(--color-text);
  text-decoration: none;
}
.nav-logo:hover { color: var(--color-text); }
.logo-icon { font-size: 1.25rem; }

.nav-links {
  display: flex;
  list-style: none;
  gap: var(--space-xs);
}

.nav-links a {
  display: block;
  padding: var(--space-sm) var(--space-md);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--color-text);
  background: var(--color-border-light);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
}
.nav-toggle span {
  width: 20px;
  height: 2px;
  background: var(--color-text);
  border-radius: 1px;
  transition: all var(--transition-base);
}

/* ---- Footer ---- */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-2xl) var(--space-xl);
  margin-top: var(--space-4xl);
}

.footer-container {
  max-width: var(--max-width);
  margin: 0 auto;
  text-align: center;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.footer-note {
  margin-top: var(--space-sm);
  font-size: 0.75rem;
}

/* ---- Hero ---- */
.hero {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-4xl) var(--space-xl) var(--space-3xl);
  text-align: center;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: var(--space-lg);
}

.hero .tagline {
  font-size: clamp(1.0625rem, 2.5vw, 1.25rem);
  color: var(--color-text-secondary);
  max-width: 36rem;
  margin: 0 auto var(--space-2xl);
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.625rem 1.25rem;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  line-height: 1.4;
}

.btn-primary {
  background: var(--color-text);
  color: var(--color-bg);
  border-color: var(--color-text);
}
.btn-primary:hover {
  background: #44403c;
  border-color: #44403c;
  color: var(--color-bg);
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border-color: var(--color-border);
}
.btn-secondary:hover {
  background: var(--color-border-light);
  border-color: var(--color-text-muted);
  color: var(--color-text);
}

.btn-sm {
  padding: 0.375rem 0.875rem;
  font-size: 0.8125rem;
}

.btn-lg {
  padding: 0.75rem 1.75rem;
  font-size: 1rem;
}

/* ---- Section containers ---- */
.section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-3xl) var(--space-xl);
}

.section-narrow {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: var(--space-3xl) var(--space-xl);
}

.section-title {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-sm);
}

.section-subtitle {
  font-size: 1rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2xl);
}

/* ---- Cards ---- */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--transition-base);
}
.card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-text-muted);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.card p {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ---- Category badges ---- */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.1875rem 0.5rem;
  font-size: 0.6875rem;
  font-weight: 600;
  font-family: var(--font-mono);
  letter-spacing: 0.03em;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
}
.badge-tag { background: var(--color-tag-light); color: var(--color-tag); border: 1px solid var(--color-tag-border); }
.badge-tal { background: var(--color-tal-light); color: var(--color-tal); border: 1px solid var(--color-tal-border); }
.badge-tsg { background: var(--color-tsg-light); color: var(--color-tsg); border: 1px solid var(--color-tsg-border); }
.badge-tsl { background: var(--color-tsl-light); color: var(--color-tsl); border: 1px solid var(--color-tsl-border); }

/* Risk badges */
.badge-low { background: var(--color-low-light); color: var(--color-low); border: 1px solid var(--color-low-border); }
.badge-moderate { background: var(--color-moderate-light); color: var(--color-moderate); border: 1px solid var(--color-moderate-border); }
.badge-high { background: var(--color-high-light); color: var(--color-high); border: 1px solid var(--color-high-border); }
.badge-noai { background: var(--color-noai-light); color: var(--color-noai); border: 1px solid var(--color-noai-border); }

/* ---- Taxonomy grid ---- */
.taxonomy-grid {
  display: grid;
  grid-template-columns: auto 1fr 1fr;
  grid-template-rows: auto 1fr 1fr;
  gap: 2px;
  background: var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  max-width: 40rem;
  margin: var(--space-2xl) auto;
}

.taxonomy-grid .grid-label {
  background: var(--color-bg);
  padding: var(--space-md);
  font-size: 0.8125rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--color-text-secondary);
}

.taxonomy-grid .grid-cell {
  background: var(--color-surface);
  padding: var(--space-lg);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-base);
}
.taxonomy-grid .grid-cell:hover {
  transform: scale(1.02);
  z-index: 1;
}
.taxonomy-grid .grid-cell h4 {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--space-xs);
}
.taxonomy-grid .grid-cell p {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.grid-cell.cell-tag { border-left: 3px solid var(--color-tag); }
.grid-cell.cell-tal { border-left: 3px solid var(--color-tal); }
.grid-cell.cell-tsg { border-left: 3px solid var(--color-tsg); }
.grid-cell.cell-tsl { border-left: 3px solid var(--color-tsl); }

/* Static grid variant (no click handlers — used on home page) */
.taxonomy-grid--static .grid-cell {
  cursor: default;
}
.taxonomy-grid--static .grid-cell:hover {
  transform: none;
}

/* ---- Practice Mode ---- */
.practice-container {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: var(--space-2xl) var(--space-xl);
}

.practice-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.practice-header h1 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-sm);
}

/* Mode selector */
.mode-selector {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--space-2xl);
}

.mode-btn {
  padding: var(--space-sm) var(--space-lg);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 500;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--color-text-secondary);
}
.mode-btn:hover {
  border-color: var(--color-text-muted);
  color: var(--color-text);
}
.mode-btn.active {
  background: var(--color-text);
  color: var(--color-bg);
  border-color: var(--color-text);
}

/* Filter bar */
.filter-bar {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: var(--space-2xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-border-light);
}

.filter-chip {
  padding: 0.25rem 0.75rem;
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 500;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--color-text-secondary);
}
.filter-chip:hover { border-color: var(--color-text-muted); }

/* Tighten spacing when filter bars are stacked */
.filter-bar:has(+ .filter-bar) {
  border-bottom: none;
  padding-bottom: var(--space-xs);
  margin-bottom: var(--space-sm);
}
.filter-chip.active {
  background: var(--color-tag-light);
  color: var(--color-tag);
  border-color: var(--color-tag-border);
}

/* Progress bar */
.progress-bar {
  height: 4px;
  background: var(--color-border-light);
  border-radius: 2px;
  margin-bottom: var(--space-xl);
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  background: var(--color-tag);
  border-radius: 2px;
  transition: width var(--transition-base);
}

.progress-text {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
  text-align: right;
}

/* Scenario card */
.scenario-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  margin-bottom: var(--space-xl);
}

.scenario-meta {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  padding: var(--space-lg) var(--space-xl) 0;
  align-items: center;
}

.scenario-body {
  padding: var(--space-lg) var(--space-xl) var(--space-xl);
}

.scenario-body h2 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
  line-height: 1.4;
}

.scenario-description {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-lg);
}

/* Question area */
.question-area {
  padding: var(--space-xl);
  border-top: 1px solid var(--color-border-light);
  background: var(--color-bg);
}

.question-area h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
}

.question-area p {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
}

/* Answer options */
.answer-options {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.answer-option {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  text-align: left;
  line-height: 1.5;
  width: 100%;
  color: var(--color-text);
}
.answer-option:hover {
  border-color: var(--color-tag);
  background: var(--color-tag-light);
}
.answer-option.selected {
  border-color: var(--color-tag);
  background: var(--color-tag-light);
}
.answer-option.correct {
  border-color: var(--color-correct);
  background: var(--color-correct-bg);
}
.answer-option.incorrect {
  border-color: var(--color-incorrect);
  background: var(--color-incorrect-bg);
}
.answer-option.partial {
  border-color: var(--color-partial);
  background: var(--color-partial-bg);
}
.answer-option[disabled] {
  cursor: default;
  opacity: 0.85;
}

.option-marker {
  flex-shrink: 0;
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 50%;
  border: 2px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 600;
  margin-top: 0.1rem;
  transition: all var(--transition-fast);
}
.answer-option.selected .option-marker,
.answer-option:hover .option-marker {
  border-color: var(--color-tag);
  color: var(--color-tag);
}
.answer-option.correct .option-marker {
  border-color: var(--color-correct);
  background: var(--color-correct);
  color: white;
}
.answer-option.incorrect .option-marker {
  border-color: var(--color-incorrect);
  background: var(--color-incorrect);
  color: white;
}
.answer-option.partial .option-marker {
  border-color: var(--color-partial);
  background: var(--color-partial);
  color: white;
}

/* Feedback panel */
.feedback-panel {
  margin-top: var(--space-lg);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  border: 1px solid;
  display: none;
}
.feedback-panel.show { display: block; }
.feedback-panel.correct-feedback {
  background: var(--color-correct-bg);
  border-color: #bbf7d0;
}
.feedback-panel.incorrect-feedback {
  background: var(--color-incorrect-bg);
  border-color: #fecaca;
}
.feedback-panel.partial-feedback {
  background: var(--color-partial-bg);
  border-color: #fde68a;
}

.feedback-panel h4 {
  font-size: 0.9375rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}
.feedback-panel p {
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--color-text);
  margin-bottom: 0;
}
.feedback-panel .feedback-detail {
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid rgba(0,0,0,0.08);
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  line-height: 1.65;
}

/* Submit / next buttons */
.action-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--space-lg);
}

/* Scorecard */
.scorecard {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl) var(--space-xl);
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.score-number {
  font-size: 3.5rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: var(--space-sm);
}

.score-label {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
}

.score-breakdown {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  max-width: 24rem;
  margin: 0 auto;
}

.score-stat {
  text-align: center;
}
.score-stat .stat-num {
  font-size: 1.5rem;
  font-weight: 700;
}
.score-stat .stat-label {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.stat-correct { color: var(--color-correct); }
.stat-partial { color: var(--color-partial); }
.stat-incorrect { color: var(--color-incorrect); }

/* ---- Decision Tree mode ---- */
.tree-step {
  animation: fadeSlideIn 0.3s ease;
}

@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.tree-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-lg);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}
.tree-breadcrumb span {
  padding: 0.125rem 0.5rem;
  background: var(--color-border-light);
  border-radius: var(--radius-sm);
}
.tree-breadcrumb span.current {
  background: var(--color-tag-light);
  color: var(--color-tag);
  font-weight: 500;
}

/* ---- Multi-step assessment ---- */
.step-indicator {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
}

.step-dot {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
}

.step-dot .dot {
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  border: 2px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 600;
  transition: all var(--transition-fast);
  color: var(--color-text-muted);
}
.step-dot .dot-label {
  font-size: 0.6875rem;
  color: var(--color-text-muted);
  white-space: nowrap;
}
.step-dot.active .dot {
  border-color: var(--color-tag);
  color: var(--color-tag);
  background: var(--color-tag-light);
}
.step-dot.completed .dot {
  border-color: var(--color-correct);
  background: var(--color-correct);
  color: white;
}

/* ---- Dimension rating cards ---- */
.dimension-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-md);
  overflow: hidden;
}

.dimension-header {
  padding: var(--space-md) var(--space-lg);
  font-weight: 600;
  font-size: 0.9375rem;
  border-bottom: 1px solid var(--color-border-light);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.dimension-body {
  padding: var(--space-lg);
}

.dimension-body p {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-md);
}

.rating-options {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
}

.rating-btn {
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 500;
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
  color: var(--color-text-secondary);
}
.rating-btn:hover { border-color: var(--color-text-muted); color: var(--color-text); }
.rating-btn.selected-low { border-color: var(--color-low); background: var(--color-low-light); color: var(--color-low); }
.rating-btn.selected-moderate { border-color: var(--color-moderate); background: var(--color-moderate-light); color: var(--color-moderate); }
.rating-btn.selected-high { border-color: var(--color-high); background: var(--color-high-light); color: var(--color-high); }

/* ---- Content pages ---- */
.content-page {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: var(--space-3xl) var(--space-xl);
}

.content-page h1 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-sm);
}

.content-page h2 {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-top: var(--space-3xl);
  margin-bottom: var(--space-md);
}

.content-page h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
}

.content-page p {
  margin-bottom: var(--space-md);
  line-height: 1.7;
}

.content-page .lead {
  font-size: 1.0625rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2xl);
}

/* Detail / expand panels */
.detail-toggle {
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-tag);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
}
.detail-toggle:hover { color: var(--color-tal); }

.detail-content {
  display: none;
  margin-top: var(--space-md);
  padding: var(--space-lg);
  background: var(--color-bg);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  line-height: 1.7;
}
.detail-content.show { display: block; }

/* ---- Home page features ---- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-2xl);
}

.feature-card {
  padding: var(--space-xl);
}

.feature-icon {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  margin-bottom: var(--space-md);
}

.feature-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}
.feature-card p {
  font-size: 0.875rem;
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-links {
    display: none;
    position: absolute;
    top: 3.5rem;
    left: 0;
    right: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    padding: var(--space-sm);
  }
  .nav-links.open { display: flex; }

  .hero { padding: var(--space-2xl) var(--space-md) var(--space-xl); }
  .hero h1 { font-size: 1.75rem; }

  .section, .section-narrow, .practice-container, .content-page {
    padding-left: var(--space-md);
    padding-right: var(--space-md);
  }

  .taxonomy-grid {
    grid-template-columns: 1fr 1fr;
  }
  .taxonomy-grid .grid-label {
    display: none;
  }

  .rating-options {
    grid-template-columns: 1fr;
  }

  .score-breakdown {
    grid-template-columns: repeat(3, 1fr);
  }

  .step-indicator {
    gap: var(--space-sm);
  }
  .step-dot .dot-label { display: none; }
}

/* ---- Utility ---- */
.text-center { text-align: center; }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mt-2xl { margin-top: var(--space-2xl); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.hidden { display: none !important; }
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}