/* ============================================================
   DocLib Legal Site – Design System
   ============================================================ */

/* ---- Tokens ---- */
:root {
  --bg: #f8f9fb;
  --bg-gradient-start: #f0f2f6;
  --bg-gradient-end: #e8eaf0;
  --surface: #ffffff;
  --surface-hover: #f4f5f8;
  --ink: #1a1d26;
  --ink-secondary: #5a5f72;
  --ink-tertiary: #8b90a0;
  --border: rgba(0, 0, 0, 0.06);
  --border-strong: rgba(0, 0, 0, 0.1);
  --accent: #3d5af1;
  --accent-hover: #2c49d8;
  --accent-soft: rgba(61, 90, 241, 0.08);
  --accent-glow: rgba(61, 90, 241, 0.15);
  --max-width: 780px;
  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 24px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.03);
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.06), 0 1px 3px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.08), 0 4px 12px rgba(0, 0, 0, 0.04);
  --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  color-scheme: light dark;
}

/* ---- Dark Mode ---- */
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1117;
    --bg-gradient-start: #13151d;
    --bg-gradient-end: #0d0f15;
    --surface: #1a1d28;
    --surface-hover: #222634;
    --ink: #e8eaf0;
    --ink-secondary: #9da1b2;
    --ink-tertiary: #6b7085;
    --border: rgba(255, 255, 255, 0.06);
    --border-strong: rgba(255, 255, 255, 0.1);
    --accent: #6b8aff;
    --accent-hover: #8ba4ff;
    --accent-soft: rgba(107, 138, 255, 0.1);
    --accent-glow: rgba(107, 138, 255, 0.12);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.2);
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.3), 0 1px 3px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.35), 0 4px 12px rgba(0, 0, 0, 0.25);
  }
}

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

html {
  font-family: "Avenir Next", Avenir, "Segoe UI", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background: linear-gradient(160deg, var(--bg-gradient-start) 0%, var(--bg) 40%, var(--bg-gradient-end) 100%);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
}

/* ---- Links ---- */
a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--accent-hover);
}

/* ---- Layout Shell ---- */
.shell {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 40px 24px 80px;
}

/* ---- Hero (Index page) ---- */
.hero {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px 40px 40px;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), #a78bfa, var(--accent));
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

/* ---- Page (Privacy / Terms / Support) ---- */
.page {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px 40px 44px;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.page::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), #a78bfa, var(--accent));
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

/* ---- Kicker (Brand tag above title) ---- */
.kicker {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 16px;
}

/* ---- Typography ---- */
h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.15;
  margin-bottom: 12px;
  color: var(--ink);
}

h2 {
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.3;
  margin-bottom: 10px;
  color: var(--ink);
}

p,
li {
  color: var(--ink-secondary);
  line-height: 1.7;
  font-size: 0.938rem;
}

.lede {
  font-size: 1.05rem;
  color: var(--ink-secondary);
  line-height: 1.65;
  max-width: 560px;
}

.meta {
  font-size: 0.813rem;
  font-weight: 500;
  color: var(--ink-tertiary);
  margin-bottom: 4px;
}

.muted {
  color: var(--ink-tertiary);
  font-size: 0.875rem;
}

/* ---- Navigation Pills ---- */
.topnav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.topnav a {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  font-size: 0.813rem;
  font-weight: 500;
  color: var(--ink-secondary);
  background: var(--surface-hover);
  border: 1px solid var(--border);
  border-radius: 999px;
  text-decoration: none;
  transition: all var(--transition);
}

.topnav a:hover {
  color: var(--accent);
  background: var(--accent-soft);
  border-color: var(--accent-glow);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

/* ---- Card Grid (Index page) ---- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  transition: all var(--transition);
  position: relative;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-strong);
}

.card h2 {
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.card p {
  font-size: 0.875rem;
  margin-bottom: 16px;
}

.card a.button,
.button-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  font-size: 0.813rem;
  font-weight: 500;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid transparent;
  border-radius: 999px;
  text-decoration: none;
  transition: all var(--transition);
}

.card a.button:hover,
.button-link:hover {
  background: var(--accent);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px var(--accent-glow);
}

.button-link-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 12px var(--accent-glow);
}

.button-link-primary:hover {
  background: var(--accent-hover);
  color: #fff;
}

/* ---- Legal Sections ---- */
.section {
  padding-top: 24px;
  margin-top: 24px;
  border-top: 1px solid var(--border);
}

.section:first-of-type {
  border-top: 0;
  padding-top: 8px;
  margin-top: 8px;
}

.section ul {
  padding-left: 20px;
  margin-top: 8px;
}

.section li {
  margin-bottom: 6px;
}

.section li::marker {
  color: var(--ink-tertiary);
}

/* ---- Contact Card (Support page) ---- */
.contact-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  background: var(--accent-soft);
  border: 1px solid var(--accent-glow);
  border-radius: var(--radius);
  margin-top: 8px;
  transition: all var(--transition);
}

.contact-card:hover {
  box-shadow: 0 4px 16px var(--accent-glow);
}

.contact-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: var(--accent);
  border-radius: 12px;
  flex-shrink: 0;
}

.contact-icon svg {
  width: 22px;
  height: 22px;
  fill: #fff;
}

.contact-details {
  flex: 1;
  min-width: 0;
}

.contact-details a {
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent);
  word-break: break-all;
}

.contact-details .muted {
  margin-top: 2px;
  font-size: 0.813rem;
}

/* ---- Footer ---- */
.footer {
  margin-top: 32px;
  padding-top: 24px;
  text-align: center;
  color: var(--ink-tertiary);
  font-size: 0.813rem;
  border-top: 1px solid var(--border);
}

/* ---- Notice (callout) ---- */
.notice {
  padding: 16px 20px;
  background: var(--accent-soft);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.beta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

.beta-footnote {
  margin-top: 14px;
}

/* ---- Mono (code/tech terms) ---- */
.mono {
  font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
  font-size: 0.875em;
  background: var(--accent-soft);
  padding: 1px 6px;
  border-radius: 4px;
}

/* ---- Responsive ---- */
@media (max-width: 640px) {
  .shell {
    padding: 24px 16px 56px;
  }

  .hero,
  .page {
    padding: 32px 20px 28px;
    border-radius: var(--radius);
  }

  .card {
    padding: 20px;
  }

  h1 {
    font-size: 1.6rem;
  }

  .contact-card {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .beta-actions {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ---- Smooth scroll ---- */
@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}