/* Chitti website — shared styles
   Tokens sourced from app/src/main/java/com/owlcoders/chitti/ui/theme/ (ChittiColors.kt,
   Type.kt) and ui/components/Design.kt via brain/01-design-tokens.md. Dark by default;
   light via prefers-color-scheme. No third-party CSS, no trackers. */

/* ---------- Design tokens: dark (default) ---------- */
:root {
  --bg: #050508;
  --surface: #1A1A1A;
  --surface-raised: #262626;
  --fill: rgba(255, 255, 255, 0.11);
  --separator: #2E2E2E;
  --text-high: #FFFFFF;
  --text-mid: #B3B3B3;
  --text-low: #7A7A7A;
  --accent: #F0B31C;        /* text / links */
  --accent-fill: #F0B31C;   /* filled controls */
  --accent-deep: #C8920A;
  --on-accent: #000000;
  --accent-wash: rgba(240, 179, 28, 0.18);
  --success: #30D158;
  --warning: #FF8A3D;
  --danger: #FF5A6E;
  --info: #64D2FF;
  --purple: #A987F0;
  --shadow: rgba(0, 0, 0, 0.5);
  --card-shadow: none;

  /* Spacing scale (4pt base) */
  --xs: 4px; --s: 8px; --m: 12px; --l: 16px; --xl: 20px; --xxl: 24px; --xxxl: 32px;
  --gutter: 20px;

  /* Shape */
  --radius-card: 18px;
  --radius-input: 14px;
  --radius-pill: 999px;

  color-scheme: dark;
}

/* ---------- Design tokens: light ---------- */
@media (prefers-color-scheme: light) {
  :root {
    --bg: #F2F2EC;
    --surface: #FAFAF7;
    --surface-raised: #ECEAE3;
    --fill: rgba(0, 0, 0, 0.06);
    --separator: #DDD9CC;
    --text-high: #000000;
    --text-mid: #5A5A5A;
    --text-low: #8C8A83;
    --accent: #8A6205;        /* readable accent text on paper */
    --accent-fill: #F0B31C;   /* filled controls keep true brand yellow */
    --accent-deep: #C8920A;
    --on-accent: #000000;
    --accent-wash: rgba(240, 179, 28, 0.18);
    --success: #1E7B34;
    --warning: #FF8A3D;
    --danger: #C8102E;
    --info: #00699B;
    --purple: #7C4DDA;
    --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 8px 24px rgba(0, 0, 0, 0.05);

    color-scheme: light;
  }
}

/* ---------- Reset / base ---------- */
*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 17px;
  line-height: 22px;
  font-weight: 400;
  letter-spacing: -0.003em;
  background: var(--bg);
  color: var(--text-high);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

img, svg { display: block; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Visible keyboard focus on every interactive element */
a:focus-visible,
button:focus-visible,
.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: var(--radius-input);
}

/* ---------- Type scale (mirrors the app's text styles) ---------- */
.large-title { font-size: 34px; line-height: 41px; font-weight: 700; letter-spacing: -0.021em; }
.title-1 { font-size: 28px; line-height: 34px; font-weight: 700; letter-spacing: -0.017em; }
.title-2 { font-size: 22px; line-height: 28px; font-weight: 700; letter-spacing: -0.012em; }
.title-3 { font-size: 20px; line-height: 25px; font-weight: 600; letter-spacing: -0.009em; }
.headline { font-size: 17px; line-height: 22px; font-weight: 600; letter-spacing: -0.003em; }
.subheadline { font-size: 15px; line-height: 20px; font-weight: 400; }
.footnote { font-size: 13px; line-height: 18px; font-weight: 400; }
.caption-1 { font-size: 12px; line-height: 16px; font-weight: 500; letter-spacing: 0.005em; }
.caption-2 { font-size: 11px; line-height: 13px; font-weight: 500; letter-spacing: 0.01em; }

h1, h2, h3 { margin: 0; }
p { margin: 0; }

.text-mid { color: var(--text-mid); }
.text-low { color: var(--text-low); }

/* ---------- Layout ---------- */
.wrap {
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  padding: 0 var(--gutter);
}

main { flex: 1 0 auto; }

section { padding: var(--xxxl) 0; }

.stack-s > * + * { margin-top: var(--s); }
.stack-m > * + * { margin-top: var(--m); }
.stack-l > * + * { margin-top: var(--l); }
.stack-xl > * + * { margin-top: var(--xl); }

/* ---------- Buttons (full capsule) ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--s);
  min-height: 48px;
  padding: 0 var(--xxl);
  border: none;
  border-radius: var(--radius-pill);
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  line-height: 20px;
  letter-spacing: -0.002em;
  cursor: pointer;
  transition: transform 120ms ease, opacity 120ms ease, background-color 120ms ease;
  text-decoration: none;
}
.btn:hover { text-decoration: none; }
.btn:active { transform: scale(0.97); opacity: 0.9; }

.btn-primary { background: var(--accent-fill); color: var(--on-accent); }
.btn-primary:active { background: var(--accent-deep); }

.btn-secondary { background: var(--fill); color: var(--accent); }

.btn-icon {
  min-height: 44px;
  min-width: 44px;
  padding: 0 var(--l);
}

/* ---------- Cards / rows ---------- */
.card {
  background: var(--surface);
  border-radius: var(--radius-card);
  padding: var(--xl);
  box-shadow: var(--card-shadow);
}

.rows {
  background: var(--surface);
  border-radius: var(--radius-card);
  box-shadow: var(--card-shadow);
  overflow: hidden;
}
.row {
  display: flex;
  gap: var(--l);
  padding: var(--l) var(--xl);
}
.row + .row { border-top: 1px solid var(--separator); }
.row-title { color: var(--text-high); }
.row-body { color: var(--text-mid); margin-top: 2px; }

/* Colored dot for feature cards / rows */
.dot {
  width: 12px;
  height: 12px;
  border-radius: 999px;
  flex: 0 0 auto;
  margin-top: 6px;
}
.dot-accent { background: var(--accent-fill); }
.dot-purple { background: var(--purple); }
.dot-info { background: var(--info); }
.dot-success { background: var(--success); }
.dot-danger { background: var(--danger); }
.dot-warning { background: var(--warning); }

/* ---------- Header / nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--separator);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: var(--l);
  min-height: 60px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--s);
  color: var(--text-high);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: -0.01em;
}
.brand:hover { text-decoration: none; }
.brand svg { width: 30px; height: 30px; border-radius: 8px; }

.nav {
  display: flex;
  align-items: center;
  gap: var(--xs);
  margin-left: auto;
}
.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: var(--s) var(--m);
  border-radius: var(--radius-pill);
  color: var(--text-mid);
  font-size: 15px;
  font-weight: 500;
}
.nav-link:hover { color: var(--text-high); text-decoration: none; }
.nav-link[aria-current="page"] {
  color: var(--accent);
  background: var(--accent-wash);
}
.nav-link svg { width: 18px; height: 18px; }
.nav-cta { margin-left: var(--s); }

.nav-icons { display: none; }

/* ---------- Hero ---------- */
.hero {
  padding: var(--xxxl) 0 var(--xxl);
  text-align: center;
}
.hero-mark { width: 96px; height: 96px; margin: 0 auto var(--xl); border-radius: 23px; }
.hero h1 { max-width: 18ch; margin: 0 auto; }
.hero-sub { max-width: 52ch; margin: var(--l) auto 0; color: var(--text-mid); }
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--m);
  justify-content: center;
  margin-top: var(--xxl);
}

/* ---------- Feature grid ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--l);
}
.feature h3 { margin-bottom: var(--xs); }
.feature .dot { margin: 0 0 var(--m); }

/* ---------- Callout ---------- */
.callout {
  background: var(--accent-wash);
  border-radius: var(--radius-card);
  padding: var(--xl);
  display: flex;
  gap: var(--l);
  align-items: flex-start;
}
.callout .dot { background: var(--accent-fill); }
.callout-danger { background: color-mix(in srgb, var(--danger) 14%, transparent); }
.callout-danger .dot { background: var(--danger); }

/* ---------- Tables (permissions, data) ---------- */
.table-card {
  background: var(--surface);
  border-radius: var(--radius-card);
  box-shadow: var(--card-shadow);
  overflow: hidden;
}
table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}
table.data th, table.data td {
  text-align: left;
  padding: var(--m) var(--l);
  vertical-align: top;
}
table.data thead th {
  color: var(--text-mid);
  font-weight: 600;
  font-size: 13px;
  border-bottom: 1px solid var(--separator);
}
table.data tbody tr + tr td { border-top: 1px solid var(--separator); }
table.data td:first-child { color: var(--text-high); font-weight: 500; white-space: nowrap; }
table.data td:last-child { color: var(--text-mid); }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 13px; color: var(--text-low); }

/* ---------- Section heading ---------- */
.section-head { margin-bottom: var(--xl); }
.section-head p { margin-top: var(--s); color: var(--text-mid); max-width: 60ch; }

/* ---------- Credit / footer ---------- */
.credit {
  text-align: center;
  color: var(--text-mid);
  padding: var(--xxl) 0 0;
}
.site-footer {
  flex-shrink: 0;
  border-top: 1px solid var(--separator);
  padding: var(--xl) 0;
  margin-top: var(--xxxl);
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--m) var(--l);
  color: var(--text-low);
}
.footer-inner a { color: var(--text-mid); font-size: 13px; }
.footer-inner .sep { color: var(--separator); }
.footer-spacer { margin-left: auto; }

/* ---------- Cookie banner ---------- */
.cookie-banner {
  position: fixed;
  left: var(--l);
  right: var(--l);
  bottom: var(--l);
  z-index: 100;
  max-width: 560px;
  margin: 0 auto;
  background: var(--surface-raised);
  border: 1px solid var(--separator);
  border-radius: var(--radius-card);
  box-shadow: 0 8px 40px var(--shadow);
  padding: var(--l) var(--xl);
  display: none;
}
.cookie-banner.show { display: block; }
.cookie-banner p { color: var(--text-mid); }
.cookie-actions {
  display: flex;
  gap: var(--s);
  margin-top: var(--l);
  flex-wrap: wrap;
}
.cookie-actions .btn { min-height: 40px; font-size: 14px; padding: 0 var(--l); }

/* ---------- Utilities ---------- */
.badge {
  display: inline-block;
  padding: 2px var(--s);
  border-radius: var(--radius-pill);
  background: var(--fill);
  color: var(--text-mid);
  font-size: 12px;
  font-weight: 500;
}
ul.plain { margin: 0; padding-left: var(--xl); color: var(--text-mid); }
ul.plain li + li { margin-top: var(--s); }
.divider { height: 1px; background: var(--separator); border: 0; margin: var(--xxl) 0; }

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
  .nav-labels { display: none; }
  .nav-link { padding: var(--s); }
  .nav-link svg { width: 22px; height: 22px; }
  .nav-cta { display: none; }
  .hero h1 { font-size: 28px; line-height: 34px; }
  section { padding: var(--xxl) 0; }
  table.data td:first-child { white-space: normal; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}

/* ---------- Skip link (keyboard/screen-reader) ---------- */
.skip-link {
  position: absolute;
  left: var(--l);
  top: -100px;
  z-index: 200;
  background: var(--accent-fill);
  color: var(--on-accent);
  padding: var(--s) var(--l);
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 15px;
  transition: top 120ms ease;
}
.skip-link:focus { top: var(--s); text-decoration: none; outline: 2px solid var(--text-high); outline-offset: 2px; }

#main { scroll-margin-top: 72px; }