/* ChannelSurf marketing site — design tokens mirrored from the app renderer
   (index.html :root block + tv-ui component conventions): soft-dark surfaces,
   oklch accent with hex fallback, Inter Tight display + JetBrains Mono labels,
   pill buttons, 18px-radius elevated cards, mono uppercase kickers. */

:root {
  --cs-accent: #14b7ef;
  --cs-accent: oklch(0.72 0.17 240);
  --cs-accent-soft: rgba(20, 183, 239, 0.14);
  --cs-bg: #0e0f13;
  --cs-bg: oklch(0.13 0.008 260);
  --cs-bg-elev: #16181d;
  --cs-bg-elev: oklch(0.17 0.01 260);
  --cs-border: #2b2d33;
  --cs-border: oklch(0.26 0.008 260);
  --cs-fg: #f5f6f8;
  --cs-fg: oklch(0.97 0.005 260);
  --cs-muted-strong: #c3c6cc;
  --cs-muted-strong: oklch(0.78 0.01 260);
  --cs-muted: #8b8e94;
  --cs-muted: oklch(0.58 0.008 260);
  --cs-bloom: #2a2740;
  --cs-bloom: oklch(0.25 0.06 260);
  --font-display: 'Inter Tight', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--cs-bg);
  color: var(--cs-fg);
  font-family: var(--font-display);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Login/splash-style background bloom, echoing the app's boot screen. */
.bloom {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}
.bloom::before, .bloom::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.55;
}
.bloom::before {
  width: 720px; height: 720px;
  left: -180px; top: -260px;
  background: var(--cs-bloom);
}
.bloom::after {
  width: 540px; height: 540px;
  right: -160px; top: 30vh;
  background: color-mix(in oklab, var(--cs-accent) 18%, transparent);
}

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

/* ── Header ──────────────────────────────────────────────────────────────── */
header.site {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: color-mix(in oklab, var(--cs-bg) 78%, transparent);
  border-bottom: 1px solid var(--cs-border);
}
header.site .bar {
  display: flex; align-items: center; gap: 28px;
  padding: 14px 0;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  color: var(--cs-fg); text-decoration: none;
  font-weight: 700; font-size: 17px; letter-spacing: -0.02em;
}
.brand svg { display: block; }
nav.main { display: flex; gap: 22px; margin-left: auto; align-items: center; }
nav.main a {
  color: var(--cs-muted-strong); text-decoration: none;
  font-size: 14px; font-weight: 500;
}
nav.main a:hover { color: var(--cs-fg); }
nav.main a.cta {
  color: #0a0a0a; background: var(--cs-accent);
  padding: 8px 18px; border-radius: 999px; font-weight: 600;
}
nav.main a.cta:hover { filter: brightness(1.08); color: #0a0a0a; }

/* ── Type & shared primitives ────────────────────────────────────────────── */
.kicker {
  font-family: var(--font-mono);
  font-size: 11px; font-weight: 700;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--cs-accent);
  display: flex; align-items: center; gap: 10px;
}
h1 {
  font-size: clamp(38px, 6vw, 64px);
  font-weight: 800; letter-spacing: -0.03em; line-height: 1.05;
  margin: 14px 0 18px; text-wrap: balance;
}
h2 {
  font-size: clamp(26px, 3.6vw, 36px);
  font-weight: 700; letter-spacing: -0.02em; line-height: 1.15;
  margin: 10px 0 12px; text-wrap: balance;
}
h3 { font-size: 18px; font-weight: 600; letter-spacing: -0.01em; margin: 0 0 6px; }
.lede { font-size: 18px; color: var(--cs-muted-strong); max-width: 62ch; }
.muted { color: var(--cs-muted); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 26px; border-radius: 999px;
  font-family: var(--font-display); font-size: 15px; font-weight: 600;
  text-decoration: none; cursor: pointer; border: none;
  transition: filter 120ms ease, background 120ms ease;
}
.btn.primary { background: var(--cs-accent); color: #0a0a0a; }
.btn.primary:hover { filter: brightness(1.08); }
.btn.ghost {
  background: rgba(255,255,255,0.06); color: var(--cs-fg);
  border: 1px solid var(--cs-border);
}
.btn.ghost:hover { background: rgba(255,255,255,0.10); }

.pill {
  display: inline-block; padding: 3px 10px; border-radius: 999px;
  background: var(--cs-accent-soft); border: 1px solid var(--cs-accent);
  color: var(--cs-accent);
  font-family: var(--font-mono); font-size: 10px; font-weight: 700;
  letter-spacing: 0.12em; text-transform: uppercase; vertical-align: middle;
}

.card {
  background: var(--cs-bg-elev);
  border: 1px solid var(--cs-border);
  border-radius: 18px;
  padding: 28px;
}

section { padding: 72px 0; }
section.tight { padding: 44px 0; }

/* ── Check list (mirrors the app's SYNCED_ITEMS rows) ────────────────────── */
ul.checks { list-style: none; margin: 0; padding: 0; }
ul.checks li {
  position: relative;
  padding: 10px 0 10px 30px; font-size: 15px;
  border-top: 1px solid var(--cs-border);
}
ul.checks li:first-child { border-top: none; }
ul.checks li::before {
  content: '';
  position: absolute; left: 0; top: 13px;
  width: 18px; height: 18px;
  background-color: var(--cs-accent);
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6L9 17l-5-5'/%3E%3C/svg%3E") center/contain no-repeat;
          mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6L9 17l-5-5'/%3E%3C/svg%3E") center/contain no-repeat;
}

/* ── Feature grid ────────────────────────────────────────────────────────── */
.grid {
  display: grid; gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}
.feature {
  background: var(--cs-bg-elev);
  border: 1px solid var(--cs-border);
  border-radius: 18px; padding: 24px;
}
.feature .ico {
  width: 42px; height: 42px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  background: var(--cs-accent-soft); color: var(--cs-accent);
  margin-bottom: 14px;
}
.feature p { margin: 0; font-size: 14px; color: var(--cs-muted-strong); }

/* ── Pricing ─────────────────────────────────────────────────────────────── */
.price-cards {
  display: grid; gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  align-items: stretch;
}
.price-card { display: flex; flex-direction: column; }
.price-card.premium { border-color: var(--cs-accent); position: relative; }
.price-card .price {
  font-size: 44px; font-weight: 800; letter-spacing: -0.03em; line-height: 1;
  margin: 12px 0 2px;
}
.price-card .per { font-family: var(--font-mono); font-size: 12px; color: var(--cs-muted); letter-spacing: 0.1em; text-transform: uppercase; }
.price-card ul.checks { flex: 1; margin: 18px 0 22px; }
.badge-top {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  white-space: nowrap;
  /* Opaque fill so the card's border doesn't strike through the pill. */
  background: #0f2733;
  background: color-mix(in oklab, var(--cs-accent) 16%, var(--cs-bg));
  padding: 5px 12px;
}

table.compare {
  width: 100%; border-collapse: collapse; font-size: 14px;
  background: var(--cs-bg-elev); border: 1px solid var(--cs-border);
  border-radius: 18px; overflow: hidden;
}
table.compare th, table.compare td {
  padding: 13px 18px; text-align: left;
  border-bottom: 1px solid var(--cs-border);
}
table.compare tr:last-child td { border-bottom: none; }
table.compare th {
  font-family: var(--font-mono); font-size: 11px; font-weight: 700;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--cs-muted);
  background: rgba(255,255,255,0.03);
}
table.compare td:nth-child(2), table.compare td:nth-child(3),
table.compare th:nth-child(2), table.compare th:nth-child(3) { text-align: center; }
.yes { color: var(--cs-accent); font-weight: 700; }
.no  { color: var(--cs-muted); }
.compare-scroll { overflow-x: auto; border-radius: 18px; }

/* ── FAQ ─────────────────────────────────────────────────────────────────── */
details.faq {
  background: var(--cs-bg-elev); border: 1px solid var(--cs-border);
  border-radius: 14px; padding: 4px 22px; margin-bottom: 10px;
}
details.faq summary {
  cursor: pointer; font-weight: 600; font-size: 15px;
  padding: 14px 0; list-style: none; display: flex; align-items: center; justify-content: space-between; gap: 12px;
}
details.faq summary::-webkit-details-marker { display: none; }
details.faq summary::after {
  content: '+'; color: var(--cs-muted); font-size: 20px; font-weight: 400; flex: none;
}
details.faq[open] summary::after { content: '–'; }
details.faq p { margin: 0 0 16px; font-size: 14px; color: var(--cs-muted-strong); }

/* ── Policy / document pages ─────────────────────────────────────────────── */
.doc { max-width: 760px; margin: 0 auto; padding: 56px 24px 88px; }
.doc h1 { font-size: clamp(30px, 4.5vw, 42px); }
.doc h2 { font-size: 22px; margin-top: 40px; }
.doc h3 { font-size: 17px; margin-top: 26px; }
.doc p, .doc li { font-size: 15px; color: var(--cs-muted-strong); }
.doc strong { color: var(--cs-fg); }
.doc a { color: var(--cs-accent); }
.doc .updated {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.08em;
  color: var(--cs-muted); margin-bottom: 30px;
}
.doc .callout {
  background: var(--cs-bg-elev); border: 1px solid var(--cs-border);
  border-left: 3px solid var(--cs-accent);
  border-radius: 12px; padding: 16px 20px; margin: 22px 0; font-size: 14px;
}

/* ── App-window mock (hero) ──────────────────────────────────────────────── */
.appmock {
  border: 1px solid var(--cs-border); border-radius: 18px;
  background: var(--cs-bg-elev);
  box-shadow: 0 40px 120px rgba(0,0,0,0.55);
  overflow: hidden;
  display: grid; grid-template-columns: 60px 1fr;
  aspect-ratio: 16 / 9.4;
  max-width: 860px; margin: 56px auto 0;
}
.appmock .side {
  border-right: 1px solid var(--cs-border);
  display: flex; flex-direction: column; align-items: center; gap: 18px;
  padding: 18px 0;
}
.appmock .side i {
  width: 22px; height: 22px; border-radius: 7px;
  background: rgba(255,255,255,0.08);
}
.appmock .side i.on { background: var(--cs-accent); }
.appmock .main { padding: 20px 22px; overflow: hidden; }
.appmock .rail-label {
  font-family: var(--font-mono); font-size: 9px; font-weight: 700;
  letter-spacing: 0.16em; text-transform: uppercase; color: var(--cs-muted);
  margin: 14px 0 8px;
}
.appmock .rail { display: flex; gap: 10px; }
.appmock .poster {
  flex: none; width: 84px; aspect-ratio: 2/3; border-radius: 8px;
  background: linear-gradient(160deg, rgba(255,255,255,0.10), rgba(255,255,255,0.03));
  border: 1px solid var(--cs-border);
}
.appmock .poster.focus {
  border: 2px solid var(--cs-accent);
  box-shadow: 0 0 0 4px var(--cs-accent-soft);
  transform: scale(1.04);
}
.appmock .hero-tile {
  height: 34%; border-radius: 12px; position: relative;
  background:
    radial-gradient(120% 160% at 85% 0%, color-mix(in oklab, var(--cs-accent) 32%, transparent), transparent 60%),
    linear-gradient(120deg, #232634, #14161c);
  border: 1px solid var(--cs-border);
}
.appmock .hero-tile::after {
  content: '';
  position: absolute; left: 18px; bottom: 14px;
  width: 42%; height: 9px; border-radius: 999px;
  background: rgba(255,255,255,0.22);
}
.appmock .hero-tile::before {
  content: '';
  position: absolute; left: 18px; bottom: 32px;
  width: 26%; height: 13px; border-radius: 999px;
  background: rgba(255,255,255,0.55);
}

/* ── Store badges row ────────────────────────────────────────────────────── */
.stores { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.store {
  display: inline-flex; align-items: center; gap: 10px;
  border: 1px solid var(--cs-border); border-radius: 12px;
  background: var(--cs-bg-elev); color: var(--cs-fg);
  padding: 10px 18px; text-decoration: none; font-size: 14px; font-weight: 600;
}
.store:hover { border-color: var(--cs-muted); }
.store .soon {
  font-family: var(--font-mono); font-size: 9px; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--cs-muted);
  border: 1px solid var(--cs-border); border-radius: 999px; padding: 2px 8px;
}

/* ── Footer ──────────────────────────────────────────────────────────────── */
footer.site {
  border-top: 1px solid var(--cs-border);
  padding: 40px 0 56px; margin-top: 40px;
  font-size: 13px; color: var(--cs-muted);
}
footer.site .cols {
  display: flex; flex-wrap: wrap; gap: 28px 56px; justify-content: space-between;
}
footer.site a { color: var(--cs-muted-strong); text-decoration: none; }
footer.site a:hover { color: var(--cs-fg); }
footer.site nav { display: flex; flex-direction: column; gap: 8px; }
footer.site .head {
  font-family: var(--font-mono); font-size: 10px; font-weight: 700;
  letter-spacing: 0.16em; text-transform: uppercase; color: var(--cs-muted);
  margin-bottom: 10px;
}
footer.site .legal { margin-top: 34px; font-size: 12px; max-width: 72ch; }

@media (max-width: 720px) {
  nav.main { gap: 14px; }
  nav.main a.hide-sm { display: none; }
  section { padding: 52px 0; }
  .appmock { grid-template-columns: 44px 1fr; }
}