/* ============================================================================
   Upcheck — shared design tokens & components
   Mirrors the app's design system (Theme.swift):
     accent indigo #5C57EB · dark canvas #16161B · radius 14/20
     three-state colors: up=green · slow=orange · down=red
   Used by index.html, privacy.html, terms.html.
   ========================================================================== */

:root {
  /* surfaces — deep canvas matches the app splash (#16161B) */
  --bg:      #0e0e12;
  --panel:   #16161b;
  --panel-2: #1c1c22;
  --line:    rgba(255,255,255,0.08);
  --line-2:  rgba(255,255,255,0.14);

  /* text */
  --ink:   #f5f5f7;
  --muted: #9a9aa2;
  --faint: #6a6a72;

  /* brand accent (app Theme.accent — indigo) */
  --accent:    #5c57eb;
  --accent-hi: #7b77f0;
  --accent-soft: rgba(92,87,235,0.14);

  /* three health states (Apple system colors, matching the app) */
  --up:    #30d158;
  --slow:  #ff9f0a;
  --down:  #ff453a;

  /* radii — Theme.radius / Theme.radiusCard */
  --r:      14px;
  --r-card: 20px;
  --r-pill: 999px;

  --maxw: 1040px;
  --shadow: 0 1px 0 rgba(255,255,255,0.04) inset, 0 18px 40px -24px rgba(0,0,0,0.7);

  /* surface-dependent values (overridden for light mode below) */
  --nav-bg: rgba(14,14,18,0.6);
  --hover:  rgba(255,255,255,0.05);
  --hero-glow: rgba(92,87,235,0.16);
}

/* ---- light mode — mirrors the app's light theme (Theme.swift) ----------- */
@media (prefers-color-scheme: light) {
  :root {
    --bg:      #f2f2f7;   /* appBackground light */
    --panel:   #ffffff;   /* appCard light */
    --panel-2: #eceef3;
    --line:    rgba(0,0,0,0.09);
    --line-2:  rgba(0,0,0,0.14);

    --ink:   #1c1c1e;
    --muted: #6b6b72;
    --faint: #9a9aa2;

    --accent:    #5c57eb;
    --accent-hi: #4b46d8;   /* darker indigo so eyebrows/links stay legible on white */
    --accent-soft: rgba(92,87,235,0.10);

    --up:   #34c759;        /* Apple system green / orange / red, light variants */
    --slow: #ff9500;
    --down: #ff3b30;

    --nav-bg: rgba(242,242,247,0.72);
    --hover:  rgba(0,0,0,0.05);
    --hero-glow: rgba(92,87,235,0.10);
    --shadow: 0 1px 2px rgba(0,0,0,0.05), 0 14px 34px -22px rgba(20,20,40,0.20);
  }
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  background:
    radial-gradient(1200px 600px at 50% -200px, var(--hero-glow), transparent 60%),
    var(--bg);
  background-attachment: fixed;
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", system-ui, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---- top nav ------------------------------------------------------------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  background: var(--nav-bg);
  border-bottom: 0.5px solid var(--line);
}
.nav-in {
  display: flex; align-items: center; justify-content: space-between;
  max-width: var(--maxw); margin: 0 auto; padding: 14px 24px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 19px; letter-spacing: -0.4px; }
.brand .mark {
  width: 30px; height: 30px; border-radius: 9px; background: var(--panel);
  border: 0.5px solid var(--line); display: flex; align-items: center; justify-content: center;
}
.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a {
  font-size: 14px; color: var(--muted); padding: 8px 12px; border-radius: var(--r-pill);
  transition: color .18s, background .18s;
}
.nav-links a:hover { color: var(--ink); background: var(--hover); }
.nav-links a.cta {
  color: var(--ink); border: 0.5px solid var(--line-2);
}
.nav-links a.cta:hover { border-color: var(--accent); background: var(--accent-soft); }
@media (max-width: 560px) { .nav-links a.hide-sm { display: none; } }

/* ---- buttons ------------------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 22px; border-radius: var(--r); font-weight: 600; font-size: 15px;
  transition: filter .18s, border-color .18s, background .18s, transform .06s;
  cursor: pointer;
}
.btn:active { transform: translateY(1px); }
.btn.primary { background: var(--accent); color: #fff; box-shadow: 0 10px 30px -12px var(--accent); }
.btn.primary:hover { filter: brightness(1.08); }
.btn.ghost { border: 0.5px solid var(--line-2); color: var(--ink); }
.btn.ghost:hover { border-color: var(--accent); background: var(--accent-soft); }

/* ---- shared cards & section rhythm -------------------------------------- */
.eyebrow {
  color: var(--accent-hi); font-size: 12.5px; font-weight: 650; letter-spacing: .6px;
  text-transform: uppercase;
}
.card {
  background: var(--panel); border: 0.5px solid var(--line);
  border-radius: var(--r-card); padding: 24px; box-shadow: var(--shadow);
}

/* ---- footer (shared across all pages) ----------------------------------- */
.site-footer {
  border-top: 0.5px solid var(--line); margin-top: 24px;
  padding: 40px 24px 56px;
}
.site-footer .foot-in {
  max-width: var(--maxw); margin: 0 auto;
  display: flex; flex-wrap: wrap; gap: 18px 28px; align-items: center; justify-content: space-between;
}
.site-footer .foot-brand { display: flex; align-items: center; gap: 9px; font-weight: 650; color: var(--ink); }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 6px 4px; }
.site-footer nav a {
  font-size: 14px; color: var(--muted); padding: 6px 12px; border-radius: var(--r-pill);
  transition: color .18s, background .18s;
}
.site-footer nav a:hover { color: var(--ink); background: var(--hover); }
.site-footer .legalnote { width: 100%; color: var(--faint); font-size: 12.5px; margin-top: 6px; }

/* ---- legal pages (privacy / terms) -------------------------------------- */
.legal { max-width: 760px; margin: 0 auto; padding: 56px 24px 24px; }
.legal .kicker { color: var(--accent-hi); font-size: 13px; font-weight: 650; letter-spacing: .5px; }
.legal h1 { font-size: clamp(30px, 5vw, 44px); font-weight: 700; letter-spacing: -1.2px; margin: 10px 0 8px; }
.legal .updated { color: var(--muted); font-size: 14px; margin-bottom: 28px; }

.legal .summary {
  background: var(--panel); border: 0.5px solid var(--line);
  border-left: 3px solid var(--accent); border-radius: var(--r);
  padding: 18px 20px; margin: 0 0 36px; color: var(--muted); font-size: 14.5px;
}
.legal .summary strong { color: var(--ink); }

.legal .toc {
  display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 40px;
}
.legal .toc a {
  font-size: 13px; color: var(--muted); padding: 6px 13px;
  border: 0.5px solid var(--line); border-radius: var(--r-pill); transition: .18s;
}
.legal .toc a:hover { color: var(--ink); border-color: var(--accent); background: var(--accent-soft); }

.legal h2 {
  font-size: 20px; font-weight: 650; letter-spacing: -0.4px; margin: 40px 0 12px;
  scroll-margin-top: 80px;
}
.legal h2 .n { color: var(--faint); font-weight: 600; margin-right: 10px; }
.legal h3 { font-size: 16px; font-weight: 650; margin: 24px 0 8px; }
.legal p  { color: var(--muted); font-size: 15px; margin: 0 0 14px; }
.legal p strong, .legal li strong { color: var(--ink); font-weight: 600; }
.legal a.inline { color: var(--accent-hi); text-decoration: underline; text-underline-offset: 2px; }
.legal ul { margin: 0 0 16px; padding-left: 4px; list-style: none; }
.legal li {
  position: relative; color: var(--muted); font-size: 15px; padding: 0 0 10px 22px;
}
.legal li::before {
  content: ""; position: absolute; left: 4px; top: 10px;
  width: 6px; height: 6px; border-radius: 2px; background: var(--accent);
}
.legal .datatable {
  width: 100%; border-collapse: collapse; margin: 6px 0 18px; font-size: 14px;
}
.legal .datatable th, .legal .datatable td {
  text-align: left; padding: 12px 14px; border-bottom: 0.5px solid var(--line); vertical-align: top;
}
.legal .datatable th { color: var(--ink); font-weight: 600; font-size: 13px; }
.legal .datatable td { color: var(--muted); }
.legal .datatable td:first-child { color: var(--ink); font-weight: 600; white-space: nowrap; }

.legal .backlink {
  display: inline-flex; align-items: center; gap: 7px; margin-top: 40px;
  color: var(--muted); font-size: 14px; transition: color .18s;
}
.legal .backlink:hover { color: var(--ink); }

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