/* Nonogram — support site. Palette mirrors the iOS app theme. */
:root {
  --bg: #f7f4ee;
  --card: #ffffff;
  --card-soft: #f1ede3;
  --ink: #1b1b22;
  --ink-secondary: #706d78;
  --accent: #5b54d9;
  --accent-soft: rgba(91, 84, 217, 0.12);
  --deep: #3d396b;
  --success: #2a9a69;
  --line: rgba(27, 27, 34, 0.08);
  --radius: 18px;
  --maxw: 720px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #13141c;
    --card: #222430;
    --card-soft: #2c2e3d;
    --ink: #f2f1ec;
    --ink-secondary: #9e9ca8;
    --accent: #8780f2;
    --accent-soft: rgba(135, 128, 242, 0.18);
    --deep: #9e96fa;
    --line: rgba(242, 241, 236, 0.1);
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI",
    Roboto, "Helvetica Neue", "PingFang SC", "Hiragino Sans", sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
}

/* ---- header / nav ---- */
header.site {
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  position: sticky;
  top: 0;
  backdrop-filter: blur(12px);
}

header.site .wrap {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.02em;
}

/* tiny nonogram mark drawn in pure CSS */
.mark {
  display: grid;
  grid-template-columns: repeat(3, 9px);
  grid-template-rows: repeat(3, 9px);
  gap: 2px;
}
.mark i {
  background: var(--card-soft);
  border-radius: 3px;
}
.mark i.on { background: var(--accent); }

nav.site {
  margin-left: auto;
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}

nav.site a {
  color: var(--ink-secondary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  padding: 7px 12px;
  border-radius: 999px;
}

nav.site a:hover { color: var(--ink); background: var(--accent-soft); }
nav.site a.active { color: var(--accent); background: var(--accent-soft); }

/* ---- hero (home) ---- */
.hero { padding: 72px 0 48px; }

.hero h1 {
  font-size: clamp(34px, 6vw, 52px);
  line-height: 1.12;
  letter-spacing: -0.03em;
  margin: 18px 0 14px;
}

.hero p.lede {
  font-size: 18px;
  color: var(--ink-secondary);
  max-width: 560px;
  margin: 0 0 28px;
}

.kicker {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 5px 12px;
  border-radius: 999px;
}

.badges {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.badge {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-secondary);
  background: var(--card);
  border: 1px solid var(--line);
  padding: 8px 14px;
  border-radius: 999px;
}

/* ---- cards grid ---- */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 14px;
  padding: 8px 0 56px;
}

a.card {
  display: block;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  text-decoration: none;
  color: var(--ink);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

a.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(27, 27, 34, 0.08);
}

a.card .glyph { font-size: 26px; }
a.card h3 { margin: 10px 0 4px; font-size: 17px; letter-spacing: -0.01em; }
a.card p { margin: 0; font-size: 14px; color: var(--ink-secondary); }

/* ---- legal pages ---- */
main.legal { padding: 48px 0 72px; }

main.legal h1 {
  font-size: clamp(28px, 5vw, 38px);
  letter-spacing: -0.02em;
  margin: 0 0 6px;
}

.updated {
  color: var(--ink-secondary);
  font-size: 14px;
  margin-bottom: 36px;
}

main.legal h2 {
  font-size: 19px;
  letter-spacing: -0.01em;
  margin: 40px 0 10px;
}

main.legal p, main.legal li {
  color: var(--ink-secondary);
  font-size: 15.5px;
}

main.legal ul { padding-left: 22px; }
main.legal li { margin: 6px 0; }
main.legal strong { color: var(--ink); }

.callout {
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 4px solid var(--accent);
  border-radius: 12px;
  padding: 16px 18px;
  margin: 22px 0;
  font-size: 15px;
  color: var(--ink-secondary);
}

.callout p { margin: 0; color: var(--ink-secondary); }

table.facts {
  width: 100%;
  border-collapse: collapse;
  margin: 18px 0;
  font-size: 14.5px;
}

table.facts th, table.facts td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
}

table.facts th { color: var(--ink); font-weight: 700; width: 45%; }
table.facts td { color: var(--ink-secondary); }

a.plain { color: var(--accent); font-weight: 600; text-decoration: none; }
a.plain:hover { text-decoration: underline; }

/* ---- support FAQ ---- */
details.faq {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 4px 18px;
  margin: 10px 0;
}

details.faq summary {
  cursor: pointer;
  font-weight: 700;
  font-size: 15.5px;
  padding: 12px 0;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

details.faq summary::-webkit-details-marker { display: none; }
details.faq summary::after {
  content: "+";
  color: var(--accent);
  font-size: 20px;
  font-weight: 600;
}
details.faq[open] summary::after { content: "−"; }
details.faq .body { padding: 0 0 14px; color: var(--ink-secondary); font-size: 15px; }

.contact-card {
  background: var(--deep);
  color: #fff;
  border-radius: var(--radius);
  padding: 26px;
  margin: 18px 0 8px;
}

.contact-card h2 { margin: 0 0 6px; color: #fff; font-size: 19px; }
.contact-card p { margin: 0 0 14px; color: rgba(255, 255, 255, 0.8); font-size: 15px; }
.contact-card a.plain { color: #c9c4ff; }

/* ---- footer ---- */
footer.site {
  border-top: 1px solid var(--line);
  padding: 26px 0 40px;
  font-size: 13.5px;
  color: var(--ink-secondary);
}

footer.site .wrap {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  align-items: center;
}

footer.site a { color: var(--ink-secondary); text-decoration: none; }
footer.site a:hover { color: var(--accent); }
footer.site .spacer { margin-left: auto; }