/* ============================================================
   AutoDoc Landing — Murmur Design System
   css/style.css
   ============================================================ */

/* ============================================================
   1. DESIGN TOKENS
   ============================================================ */

:root {
  /* Backgrounds */
  --bg: #FAFAF7;
  --bg-deep: #F0EFE9;
  --bg-card: #FFFFFF;
  --bg-dark: #1A1A17;

  /* Text */
  --text: #1A1A17;
  --text-secondary: #6B6A63;
  --text-tertiary: #9C9B94;

  /* Brand colours */
  --sage: #7A9E7E;
  --sage-light: #E8F0E8;
  --sage-dark: #4A6B4E;
  --clay: #C2886E;
  --dusk: #8B7EAA;

  /* Borders */
  --border: rgba(26, 26, 23, 0.1);
  --border-strong: rgba(26, 26, 23, 0.18);

  /* Typography */
  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body: 'DM Sans', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Radii */
  --radius: 12px;
  --radius-sm: 6px;
  --radius-btn: 8px;
}

/* Dark mode overrides */
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141413;
    --bg-deep: #1C1C1A;
    --bg-card: #1E1E1C;
    --text: #E8E7E2;
    --text-secondary: #9C9B94;
    --text-tertiary: #6B6A63;
    --border: rgba(232, 231, 226, 0.08);
    --border-strong: rgba(232, 231, 226, 0.14);
  }
}

/* ============================================================
   2. RESET
   ============================================================ */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul,
ol {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font: inherit;
}

/* ============================================================
   3. NAVIGATION
   ============================================================ */

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 60px;
  height: 64px;
  background: rgba(250, 250, 247, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

@media (prefers-color-scheme: dark) {
  .nav {
    background: rgba(20, 20, 19, 0.85);
  }
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--text);
}

.nav-wordmark {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--text);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s ease;
}

.nav-links a:hover {
  color: var(--text);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-hamburger {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  color: var(--text);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.nav-hamburger svg {
  width: 24px;
  height: 24px;
}

/* Mobile nav overlay */
.nav-mobile {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.nav-mobile.open {
  opacity: 1;
  pointer-events: all;
}

.nav-mobile-close {
  align-self: flex-end;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  color: var(--text);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  margin-bottom: 24px;
}

.nav-mobile-close svg {
  width: 24px;
  height: 24px;
}

.nav-mobile-links {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-mobile-links a {
  font-size: 24px;
  font-family: var(--font-display);
  color: var(--text);
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  transition: color 0.2s ease;
}

.nav-mobile-links a:hover {
  color: var(--sage);
}

.nav-mobile-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 32px;
}

/* ============================================================
   4. BUTTONS
   ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  line-height: 1;
  border-radius: var(--radius-btn);
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, opacity 0.2s ease;
  white-space: nowrap;
  cursor: pointer;
}

.btn-primary {
  background: var(--bg-dark);
  color: #FAFAF7;
  border: 1px solid transparent;
}

.btn-primary:hover {
  opacity: 0.85;
}

.btn-sage,
.nav-links .btn-sage {
  background: var(--sage-dark);
  color: #FFFFFF;
  border: 1px solid transparent;
}

.btn-sage:hover {
  opacity: 0.85;
}

@media (prefers-color-scheme: dark) {
  .btn-primary {
    background: var(--text);
    color: var(--bg);
  }
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border-strong);
}

.btn-secondary:hover {
  background: var(--bg-deep);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid rgba(232, 231, 226, 0.25);
}

.btn-ghost:hover {
  background: rgba(232, 231, 226, 0.08);
}

/* Large button size modifier */
.btn--lg {
  padding: 13px 28px;
  font-size: 15px;
}

/* ============================================================
   5. BADGE
   ============================================================ */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  background: var(--sage-light);
  color: var(--sage-dark);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  border-radius: 100px;
  text-transform: uppercase;
}

.badge::before {
  content: '';
  display: block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--sage);
  flex-shrink: 0;
}

/* ============================================================
   6. SECTION HELPERS
   ============================================================ */

.section {
  padding: 80px 60px;
}

.section--deep {
  background-color: var(--bg-deep);
}

.section--dark {
  background-color: var(--bg-dark);
  color: #E8E7E2;
}

.section--dark .text-secondary,
.section--dark .section-desc {
  color: #9C9B94;
}

.section-label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--sage);
  margin-bottom: 12px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 16px;
}

.section--dark .section-title {
  color: #E8E7E2;
}

.section-title em {
  font-style: italic;
  color: var(--sage);
}

.section-desc {
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 640px;
}

/* ============================================================
   7. GRID LAYOUTS
   ============================================================ */

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* ============================================================
   8. SCREENSHOTS
   ============================================================ */

.screenshot {
  border-radius: var(--radius);
  border: 1px solid var(--border-strong);
  overflow: hidden;
}

.screenshot--dark {
  background: var(--bg-dark);
  padding: 24px;
}

.screenshot img {
  width: 100%;
  height: auto;
  display: block;
}

/* ============================================================
   9. FEATURE CHECKLIST
   ============================================================ */

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

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

.checklist-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--sage);
  margin-top: 1px;
}

.checklist-content {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.checklist-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.4;
}

.checklist-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ============================================================
   10. TRUST BAR
   ============================================================ */

.trust-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 48px;
  padding: 24px 60px;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.trust-bar-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
}

.trust-bar-item svg {
  width: 16px;
  height: 16px;
  color: var(--sage);
  flex-shrink: 0;
}

/* ============================================================
   11. STATS CARD
   ============================================================ */

.stats-card {
  background: var(--bg-deep);
  border-radius: var(--radius);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.stat-number {
  font-family: var(--font-display);
  font-size: 48px;
  font-weight: 400;
  line-height: 1;
  color: var(--sage);
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 500;
  line-height: 1.4;
}

.stat-divider {
  width: 100%;
  height: 1px;
  background: var(--border);
}

/* ============================================================
   12. PRINCIPLE CARDS
   ============================================================ */

.principle-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 32px;
  border: 1px solid var(--border);
}

.principle-title {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 400;
  color: var(--sage);
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.principle-desc {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ============================================================
   13. PRIVACY COMPARISON
   ============================================================ */

.privacy-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.privacy-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 32px;
  border: 1px solid var(--border);
}

.privacy-card--local {
  border-color: var(--sage);
  border-width: 2px;
}

.privacy-card--servers {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.privacy-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.privacy-badge--local {
  background: var(--sage-light);
  color: var(--sage-dark);
}

.privacy-badge--servers {
  background: rgba(139, 126, 170, 0.12);
  color: var(--dusk);
}

.privacy-nothing {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 400;
  color: var(--text-tertiary);
  font-style: italic;
  margin: 24px 0;
}

/* ============================================================
   14. COMMITMENT LIST
   ============================================================ */

.commitment {
  display: flex;
  align-items: flex-start;
  gap: 24px;
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px 32px;
  border: 1px solid var(--border);
}

.commitment + .commitment {
  margin-top: 12px;
}

.commitment-number {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 400;
  color: var(--sage);
  line-height: 1;
  flex-shrink: 0;
  width: 40px;
}

.commitment-content {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.commitment-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
}

.commitment-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ============================================================
   15. HERO (HOMEPAGE)
   ============================================================ */

.hero {
  position: relative;
  padding: 100px 60px 80px;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 50% at 50% -10%, rgba(122, 158, 126, 0.18) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.hero > * {
  position: relative;
  z-index: 1;
}

.hero-eyebrow {
  margin-bottom: 24px;
}

.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(48px, 6vw, 64px);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-bottom: 24px;
  max-width: 800px;
}

.hero-headline em {
  font-style: italic;
  color: var(--sage);
}

.hero-sub {
  font-size: 18px;
  line-height: 1.65;
  color: var(--text-secondary);
  max-width: 560px;
  margin-bottom: 36px;
}

.hero-ctas {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.hero-meta {
  font-size: 13px;
  color: var(--text-tertiary);
}

/* ============================================================
   16. PAGE HERO (INNER PAGES)
   ============================================================ */

.page-hero {
  padding: 72px 60px 64px;
  border-bottom: 1px solid var(--border);
}

.page-hero--center {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.page-hero--center .section-desc {
  margin-left: auto;
  margin-right: auto;
}

.page-hero .hero-headline {
  font-size: clamp(36px, 4vw, 52px);
}

/* ============================================================
   17. CTA SECTION
   ============================================================ */

.cta-section {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.cta-buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

/* ============================================================
   18. SCROLL ANIMATION
   ============================================================ */

.fade-in {
  opacity: 0;
  transform: translateY(20px);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

/* ============================================================
   19. FOOTER
   ============================================================ */

.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 32px 60px;
  border-top: 1px solid var(--border);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--text);
  text-decoration: none;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.footer-links a {
  font-size: 13px;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: var(--text);
}

.footer-copy {
  font-size: 13px;
  color: var(--text-tertiary);
}

/* ============================================================
   20. RESPONSIVE — 1024px
   ============================================================ */

@media (max-width: 1024px) {
  .nav {
    padding: 0 40px;
  }

  .section {
    padding: 64px 40px;
  }

  .hero {
    padding: 80px 40px 64px;
  }

  .page-hero {
    padding: 56px 40px 48px;
  }

  .trust-bar {
    padding: 24px 40px;
    gap: 32px;
  }

  .footer {
    padding: 28px 40px;
  }

  .grid-2 {
    gap: 40px;
  }
}

/* ============================================================
   21. RESPONSIVE — 768px (mobile)
   ============================================================ */

@media (max-width: 768px) {
  /* Nav */
  .nav {
    padding: 0 20px;
  }

  .nav-links,
  .nav-actions {
    display: none;
  }

  .nav-hamburger {
    display: flex;
  }

  /* Sections */
  .section {
    padding: 56px 20px;
  }

  .hero {
    padding: 64px 20px 56px;
  }

  .page-hero {
    padding: 48px 20px 40px;
  }

  /* Grids — single column */
  .grid-2 {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .grid-3 {
    grid-template-columns: 1fr;
    gap: 16px;
  }

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

  /* Grid order reversal utility */
  .grid-2--reverse-mobile > *:first-child {
    order: 2;
  }

  .grid-2--reverse-mobile > *:last-child {
    order: 1;
  }

  /* Hero CTAs — stack */
  .hero-ctas {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .hero-ctas .btn {
    width: 100%;
    justify-content: center;
  }

  /* Trust bar — 2x2 grid */
  .trust-bar {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    padding: 24px 20px;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
  }

  .trust-bar-item {
    justify-content: center;
  }

  /* CTA buttons */
  .cta-buttons {
    flex-direction: column;
    gap: 10px;
    width: 100%;
  }

  .cta-buttons .btn {
    width: 100%;
  }

  /* Footer — stack */
  .footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
    padding: 32px 20px;
  }

  .footer-links {
    flex-wrap: wrap;
    gap: 16px;
  }

  /* Typography adjustments */
  .section-desc {
    font-size: 15px;
  }

  .hero-sub {
    font-size: 16px;
  }
}