/* style.css — AI Adoption System design tokens + component styles */

/* === DESIGN TOKENS === */
:root,
[data-theme='light'] {
  /* Surfaces — warm off-white, clean */
  --color-bg: #f5f4f0;
  --color-surface: #faf9f6;
  --color-surface-2: #fdfdfb;
  --color-surface-offset: #efede8;
  --color-surface-offset-2: #e8e5df;
  --color-surface-dynamic: #e0ddd7;
  --color-divider: #d8d5cf;
  --color-border: #d0ccc5;

  /* Text */
  --color-text: #1a1d1b;
  --color-text-muted: #6b6e6c;
  --color-text-faint: #a8aaa8;
  --color-text-inverse: #faf9f6;

  /* Primary — Deep Teal (growth, clarity, progress) */
  --color-primary: #0d5c5f;
  --color-primary-hover: #0a4a4c;
  --color-primary-active: #073839;
  --color-primary-highlight: #c5dedf;

  /* Accent — Amber/Gold (energy, momentum) */
  --color-accent: #c47e0a;
  --color-accent-hover: #a66800;
  --color-accent-active: #8a5400;
  --color-accent-highlight: #f0e0c4;

  /* Semantic */
  --color-success: #3a7a2a;
  --color-success-highlight: #d2e4cc;
  --color-warning: #b85a1a;
  --color-warning-highlight: #f0dcc8;
  --color-error: #b03a3a;
  --color-error-highlight: #f0d4d4;
  --color-blue: #2a6a9a;
  --color-blue-highlight: #d0e0ec;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 0.875rem;
  --radius-xl: 1.25rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 400ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Shadows — warm-toned */
  --shadow-sm: 0 1px 2px oklch(0.2 0.01 80 / 0.05);
  --shadow-md: 0 4px 12px oklch(0.2 0.01 80 / 0.07);
  --shadow-lg: 0 12px 32px oklch(0.2 0.01 80 / 0.10);
  --shadow-xl: 0 24px 56px oklch(0.2 0.01 80 / 0.14);

  /* Type Scale */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Content widths */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;
  --content-full: 100%;

  /* Fonts */
  --font-display: 'Cabinet Grotesk', 'Helvetica Neue', sans-serif;
  --font-body: 'Satoshi', 'Helvetica Neue', sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;
}

[data-theme='dark'] {
  --color-bg: #0f1211;
  --color-surface: #161a18;
  --color-surface-2: #1c211e;
  --color-surface-offset: #1a1f1c;
  --color-surface-offset-2: #222825;
  --color-surface-dynamic: #2a302d;
  --color-divider: #252b28;
  --color-border: #36403c;

  --color-text: #d4d8d5;
  --color-text-muted: #7c827e;
  --color-text-faint: #565a57;
  --color-text-inverse: #161a18;

  --color-primary: #5fb0b4;
  --color-primary-hover: #4a9ea3;
  --color-primary-active: #3a8489;
  --color-primary-highlight: #1e3838;

  --color-accent: #e8b450;
  --color-accent-hover: #f0c470;
  --color-accent-active: #f8d690;
  --color-accent-highlight: #3d3422;

  --color-success: #6daa45;
  --color-success-highlight: #2a3a22;
  --color-warning: #d4802a;
  --color-warning-highlight: #3d2e1a;
  --color-error: #d16363;
  --color-error-highlight: #3d2222;
  --color-blue: #5591c7;
  --color-blue-highlight: #1e2e3d;

  --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.2);
  --shadow-md: 0 4px 12px oklch(0 0 0 / 0.3);
  --shadow-lg: 0 12px 32px oklch(0 0 0 / 0.4);
  --shadow-xl: 0 24px 56px oklch(0 0 0 / 0.5);
}

/* === LAYOUT === */
.container {
  width: 100%;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.container-narrow {
  max-width: var(--content-default);
}

/* === HEADER === */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in oklab, var(--color-bg) 85%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid oklch(0.2 0.01 80 / 0.08);
}

.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-3) var(--space-3);
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-base);
  color: var(--color-text);
  text-decoration: none;
}

.logo svg {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
}

.theme-toggle:hover {
  color: var(--color-text);
  border-color: var(--color-primary);
}

/* === HERO === */
.hero {
  padding-block: var(--space-24) var(--space-16);
  position: relative;
  overflow: hidden;
}

.hero-content {
  max-width: 720px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  background: var(--color-primary-highlight);
  color: var(--color-primary);
  font-size: var(--text-xs);
  font-weight: 500;
  margin-bottom: var(--space-6);
  letter-spacing: 0.02em;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-bottom: var(--space-6);
}

.hero h1 .accent {
  color: var(--color-primary);
}

.hero-subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: 1.5;
  margin-bottom: var(--space-10);
  max-width: 60ch;
}

.hero-cta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.hero-meta {
  display: flex;
  gap: var(--space-8);
  margin-top: var(--space-12);
  flex-wrap: wrap;
}

.hero-meta-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.hero-meta-num {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-primary);
}

.hero-meta-label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* === BUTTONS === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  min-height: 44px;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}

.btn-primary:hover {
  background: var(--color-primary-hover);
}

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

.btn-secondary:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
  border-color: transparent;
}

.btn-ghost:hover {
  color: var(--color-primary);
  background: var(--color-primary-highlight);
}

/* === SECTIONS === */
.section {
  padding-block: var(--space-20);
}

.section-alt {
  background: var(--color-surface);
}

.section-header {
  margin-bottom: var(--space-12);
}

.section-label {
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}

.section-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-3);
}

.section-desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 60ch;
}

/* === ASSESSMENT === */
.assessment {
  max-width: 720px;
  margin-inline: auto;
}

.assessment-progress {
  margin-bottom: var(--space-8);
}

.progress-bar {
  height: 6px;
  background: var(--color-surface-offset-2);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  transition: width var(--transition-slow);
  width: 0%;
}

.progress-text {
  display: flex;
  justify-content: space-between;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-2);
}

.question-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-10);
  box-shadow: var(--shadow-md);
}

.question-num {
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}

.question-text {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-6);
  line-height: 1.3;
}

.options {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.option {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  min-height: 44px;
  transition: all var(--transition-interactive);
}

.option:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-highlight);
}

.option.selected {
  border-color: var(--color-primary);
  background: var(--color-primary-highlight);
}

.option input[type="radio"] {
  margin-top: 3px;
  accent-color: var(--color-primary);
  flex-shrink: 0;
}

.option-label {
  font-size: var(--text-sm);
  line-height: 1.5;
  color: var(--color-text);
}

.option-hint {
  display: block;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}

.assessment-nav {
  display: flex;
  justify-content: space-between;
  margin-top: var(--space-6);
}

/* === RESULTS === */
.results {
  display: none;
}

.results.active {
  display: block;
}

.score-display {
  text-align: center;
  margin-bottom: var(--space-12);
}

.score-circle {
  width: 160px;
  height: 160px;
  margin-inline: auto;
  position: relative;
  margin-bottom: var(--space-6);
}

.score-circle svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.score-circle .track {
  fill: none;
  stroke: var(--color-surface-offset-2);
  stroke-width: 12;
}

.score-circle .fill {
  fill: none;
  stroke: var(--color-primary);
  stroke-width: 12;
  stroke-linecap: round;
  transition: stroke-dashoffset var(--transition-slow);
}

.score-number {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--color-primary);
}

.score-label {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.score-desc {
  color: var(--color-text-muted);
  max-width: 50ch;
  margin-inline: auto;
}

/* === ROADMAP === */
.roadmap {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-bottom: var(--space-12);
}

.roadmap-phase {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  position: relative;
}

.roadmap-phase-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-divider);
}

.phase-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-sm);
}

.phase-30 { background: var(--color-primary-highlight); color: var(--color-primary); }
.phase-60 { background: var(--color-accent-highlight); color: var(--color-accent); }
.phase-90 { background: var(--color-success-highlight); color: var(--color-success); }

.phase-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-base);
}

.phase-days {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.roadmap-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.roadmap-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  font-size: var(--text-sm);
  line-height: 1.5;
  color: var(--color-text);
}

.roadmap-item::before {
  content: '';
  display: block;
  width: 6px;
  height: 6px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  margin-top: 7px;
  flex-shrink: 0;
}

/* === TRACKS === */
.tracks {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
  margin-bottom: var(--space-12);
}

.track-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.track-header {
  padding: var(--space-6);
  border-bottom: 1px solid var(--color-divider);
}

.track-header h3 {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.track-header p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.track-tag {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-3);
}

.track-tag-a { background: var(--color-primary-highlight); color: var(--color-primary); }
.track-tag-b { background: var(--color-accent-highlight); color: var(--color-accent); }

.track-body {
  padding: var(--space-6);
}

.track-body h4 {
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
}

.track-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.track-list-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--text-sm);
  line-height: 1.5;
}

.track-list-item .check {
  color: var(--color-success);
  flex-shrink: 0;
  margin-top: 1px;
}

/* === TEMPLATES === */
.template-tabs {
  display: flex;
  gap: var(--space-1);
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
  border-bottom: 1px solid var(--color-border);
}

.template-tab {
  padding: var(--space-3) var(--space-5);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  white-space: nowrap;
}

.template-tab:hover {
  color: var(--color-text);
}

.template-tab.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.template-panel {
  display: none;
}

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

.template-content {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.template-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-5);
  background: var(--color-surface-offset);
  border-bottom: 1px solid var(--color-border);
}

.template-bar span {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.copy-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-primary);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
}

.copy-btn:hover {
  background: var(--color-primary-highlight);
}

.template-body {
  padding: var(--space-6);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  line-height: 1.7;
  color: var(--color-text);
  white-space: pre-wrap;
  overflow-x: auto;
  max-height: 400px;
  overflow-y: auto;
}

/* === MATRIX === */
.matrix-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: var(--text-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.matrix-table th {
  background: var(--color-surface-offset);
  text-align: left;
  padding: var(--space-4) var(--space-4);
  font-weight: 600;
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-border);
}

.matrix-table td {
  padding: var(--space-4);
  border-bottom: 1px solid var(--color-divider);
  vertical-align: top;
}

.matrix-table tr:last-child td {
  border-bottom: none;
}

.matrix-table tr:hover td {
  background: var(--color-surface-offset);
}

.matrix-priority {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
}

.priority-high { background: var(--color-error-highlight); color: var(--color-error); }
.priority-medium { background: var(--color-warning-highlight); color: var(--color-warning); }
.priority-low { background: var(--color-success-highlight); color: var(--color-success); }

/* === FOOTER === */
.site-footer {
  padding-block: var(--space-12);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer-text {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* === ANIMATIONS === */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-in {
  animation: fadeUp 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .hero {
    padding-block: var(--space-16) var(--space-12);
  }

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

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

  .hero-meta {
    gap: var(--space-6);
  }

  .question-card {
    padding: var(--space-6);
  }

  .section {
    padding-block: var(--space-12);
  }
}

@media (max-width: 480px) {
  .hero-cta {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
  }

  .matrix-table {
    font-size: var(--text-xs);
  }

  .matrix-table th,
  .matrix-table td {
    padding: var(--space-2);
  }
}

/* === RESPONSIVE FOR INLINE-STYLE GRIDS === */
@media (max-width: 768px) {
  .roadmap {
    grid-template-columns: 1fr !important;
  }
  .tracks {
    grid-template-columns: 1fr !important;
  }
}