/*
 * Tabulia public static site — shared styles.
 * No external resources, no webfonts, no trackers. Visual language unified
 * with the public tabulia.app home (teal accent, navy ink, light/dark via
 * system preference). HTML/CSS only.
 */

:root {
  color-scheme: light dark;

  --brand: #087f87;
  --brand-dark: #066d74;
  --brand-soft: #eaf8f7;
  --ink: #102044;
  --text: #33445a;
  --muted: #647594;
  --line: #dbe3eb;
  --surface: #ffffff;
  --page: #f5f7fa;
  --page-top: #fbfcfd;
  --on-brand: #ffffff;
  --focus: #0a5f8a;
  --shadow: 0 18px 48px rgb(17 31 55 / 10%);
  --radius: 18px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --brand: #6fd6d3;
    --brand-dark: #8fe4e1;
    --brand-soft: #123033;
    --ink: #edf4fb;
    --text: #c7d2e0;
    --muted: #a9b7c9;
    --line: #2b3a4d;
    --surface: #131c26;
    --page: #0b1118;
    --page-top: #0e151d;
    --on-brand: #04211f;
    --focus: #9fe8e6;
    --shadow: 0 18px 48px rgb(0 0 0 / 45%);
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background:
    radial-gradient(circle at 12% -10%, color-mix(in srgb, var(--brand) 12%, transparent), transparent 32rem),
    linear-gradient(180deg, var(--page-top) 0%, var(--page) 100%);
  color: var(--text);
  font: 16px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; }

a { color: var(--brand); }

a:hover { color: var(--brand-dark); text-decoration: underline; }

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  left: 8px;
  top: -56px;
  z-index: 30;
  padding: 9px 14px;
  background: var(--surface);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 8px;
  font-weight: 700;
}

.skip-link:focus { top: 8px; }

.wrap { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }

/* ---------------------------------------------------------------- header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.nav {
  min-height: 76px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
}

.brand { display: inline-flex; align-items: center; text-decoration: none; }

.brand img { display: block; width: 186px; height: auto; }

.nav-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  font-weight: 700;
}

.nav-links a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 12px;
  border-radius: 9px;
  color: var(--text);
  text-decoration: none;
}

.nav-links a:hover {
  color: var(--brand);
  background: color-mix(in srgb, var(--brand) 10%, transparent);
  text-decoration: none;
}

.nav-links a[aria-current="page"] { background: var(--brand-soft); color: var(--brand-dark); }

/* ------------------------------------------------------------------ hero */

.hero { padding: 76px 0 68px; }

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  align-items: center;
  gap: 56px;
}

.hero-copy { min-width: 0; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid color-mix(in srgb, var(--brand) 35%, var(--line));
  border-radius: 999px;
  padding: 7px 12px;
  background: var(--brand-soft);
  color: var(--brand-dark);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--brand);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--brand) 15%, transparent);
}

h1 {
  margin: 20px 0 16px;
  color: var(--ink);
  font-size: clamp(40px, 7vw, 64px);
  line-height: 1.04;
  letter-spacing: -0.04em;
}

.lead {
  max-width: 620px;
  margin: 0;
  color: var(--muted);
  font-size: clamp(17px, 2.2vw, 20px);
  line-height: 1.6;
}

.hero-actions { margin-top: 26px; display: flex; flex-wrap: wrap; gap: 12px; }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 12px;
  font-weight: 800;
  text-decoration: none;
}

.button:hover { text-decoration: none; }

.button.primary {
  background: var(--brand);
  color: var(--on-brand);
  box-shadow: 0 8px 20px color-mix(in srgb, var(--brand) 25%, transparent);
}

.button.primary:hover { background: var(--brand-dark); color: var(--on-brand); }

.button.secondary { border: 1px solid var(--line); background: var(--surface); color: var(--ink); }

.button.secondary:hover { border-color: var(--brand); color: var(--brand-dark); }

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.tags li {
  border: 1px solid color-mix(in srgb, var(--brand) 30%, var(--line));
  border-radius: 999px;
  padding: 6px 13px;
  background: var(--brand-soft);
  color: var(--brand-dark);
  font-size: 13px;
  font-weight: 700;
}

/* --------------------------------------------------------- product card */

.app-card {
  position: relative;
  min-height: 360px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.app-card::before {
  content: "";
  position: absolute;
  width: 240px;
  height: 240px;
  right: -90px;
  top: -100px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--brand) 12%, transparent);
}

.app-top {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.app-top img { width: 60px; height: 60px; }

.app-status {
  border-radius: 999px;
  padding: 7px 11px;
  background: var(--brand-soft);
  color: var(--brand-dark);
  font-size: 12px;
  font-weight: 800;
}

.mock-list { position: relative; margin-top: 34px; display: grid; gap: 12px; }

.mock-row {
  display: grid;
  grid-template-columns: 44px 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 13px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
}

.mock-icon {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 11px;
  background: var(--brand-soft);
  color: var(--brand);
  font-size: 20px;
  font-weight: 900;
}

.mock-copy strong { display: block; color: var(--ink); font-size: 14px; }

.mock-copy small { display: block; margin-top: 3px; color: var(--muted); font-size: 12px; }

.mock-state { color: var(--brand); font-size: 12px; font-weight: 800; }

/* -------------------------------------------------------------- sections */

.section { padding: 66px 0; }

.section[id] { scroll-margin-top: 96px; }

.section.white {
  background: color-mix(in srgb, var(--surface) 80%, transparent);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-head { max-width: 720px; margin-bottom: 30px; }

.section-head span {
  color: var(--brand);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.section-head h2 {
  margin: 8px 0 10px;
  color: var(--ink);
  font-size: clamp(26px, 4vw, 38px);
  line-height: 1.12;
  letter-spacing: -0.03em;
}

.section-head p { margin: 0; color: var(--muted); font-size: 17px; line-height: 1.6; }

.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }

.card {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 0 8px 26px color-mix(in srgb, var(--ink) 5%, transparent);
}

.card h3 { margin: 14px 0 8px; color: var(--ink); font-size: 17px; }

.card p { margin: 0; color: var(--muted); line-height: 1.55; font-size: 15px; }

.card-icon {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 11px;
  background: var(--brand-soft);
  color: var(--brand);
  font-weight: 900;
}

.info-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 18px; }

.info-card {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 0 8px 26px color-mix(in srgb, var(--ink) 5%, transparent);
}

.info-card h2 { margin: 0 0 10px; color: var(--ink); font-size: 20px; }

.info-card p { margin: 0 0 12px; color: var(--muted); line-height: 1.6; }

.info-card p:last-child { margin-bottom: 0; }

.callout {
  margin-top: 20px;
  padding: 20px 22px;
  border: 1px solid color-mix(in srgb, var(--brand) 35%, var(--line));
  border-left: 4px solid var(--brand);
  border-radius: 14px;
  background: var(--brand-soft);
}

.callout p { margin: 0; color: var(--text); line-height: 1.6; }

.notice {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 26px;
  padding: 28px;
  border: 1px solid color-mix(in srgb, var(--brand) 35%, var(--line));
  border-radius: 20px;
  background: var(--brand-soft);
}

.notice h2 { margin: 0 0 7px; color: var(--ink); font-size: 22px; }

.notice p { margin: 0; color: var(--text); line-height: 1.5; }

/* --------------------------------------------------------- legal documents */

.legal-main { padding: 56px 0 72px; }

.policy {
  max-width: 700px;
  margin: 0 auto;
  padding: 40px 44px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.policy h1 {
  margin: 0 0 14px;
  color: var(--ink);
  font-size: clamp(30px, 4.5vw, 42px);
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.policy .lead { max-width: none; margin: 0 0 8px; color: var(--text); font-size: 17px; }

.policy .updated { margin: 0 0 8px; color: var(--muted); font-size: 14px; }

.policy h2 { margin: 30px 0 10px; color: var(--ink); font-size: 20px; }

.policy p, .policy li { color: var(--text); line-height: 1.7; }

.policy ul { padding-left: 22px; }

/* ---------------------------------------------------------------- footer */

.site-footer { padding: 34px 0 42px; color: var(--muted); font-size: 13px; }

.footer-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border-top: 1px solid var(--line);
  padding-top: 26px;
}

.footer-links { display: flex; flex-wrap: wrap; gap: 8px 18px; }

.footer-links a { color: var(--muted); text-decoration: none; font-weight: 700; }

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

/* ------------------------------------------------------------ responsive */

@media (max-width: 899px) {
  .nav { flex-direction: column; align-items: flex-start; gap: 2px; padding: 12px 0; }

  .nav-links { width: 100%; }

  .hero { padding: 52px 0 48px; }

  .hero-grid { grid-template-columns: 1fr; gap: 36px; }

  .app-card { min-height: 320px; }

  .feature-grid { grid-template-columns: repeat(2, 1fr); }

  .notice, .footer-grid { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 599px) {
  .wrap { width: min(1120px, calc(100% - 24px)); }

  .brand img { width: 154px; }

  .hero { padding: 40px 0 44px; }

  .hero-actions .button { width: 100%; }

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

  .app-card { padding: 20px; border-radius: 22px; }

  .legal-main { padding: 32px 0 48px; }

  .policy { padding: 24px 20px; border-radius: 16px; box-shadow: none; }

  .notice { padding: 22px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}