/* ── Palette ───────────────────────────────────────────────────────── */
:root {
  --bg: #f0f6fc;
  --bg-soft: #ffffff;
  --surface: #ffffff;
  --border: rgba(15, 76, 117, 0.08);
  --text: #0f172a;
  --text-muted: #475569;
  --text-soft: #64748b;
  --accent: #2563eb;
  --accent-soft: #dbeafe;
  --accent-strong: #1d4ed8;
}

* , *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

/* ── Header / nav ──────────────────────────────────────────────────── */
header {
  padding: 1rem 1.5rem;
  background: rgba(240, 246, 252, 0.85);
  backdrop-filter: saturate(160%) blur(8px);
  -webkit-backdrop-filter: saturate(160%) blur(8px);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 10;
}
header nav {
  max-width: 80rem;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.brand {
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--accent);
  text-decoration: none;
  letter-spacing: -0.01em;
  margin-right: 1.5rem;
}
nav .nav-link {
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.95rem;
  padding: 0.4rem 0.85rem;
  border-radius: 0.5rem;
  transition: color 120ms, background 120ms;
}
nav .nav-link:hover { color: var(--text); background: rgba(37, 99, 235, 0.06); }
nav .nav-link.active {
  color: var(--accent-strong);
  background: var(--accent-soft);
}

/* ── Layout ────────────────────────────────────────────────────────── */
main {
  flex: 1;
  width: 100%;
  max-width: 80rem;
  margin: 0 auto;
  padding: 4rem 1.5rem 5rem;
}

/* ── Hero ──────────────────────────────────────────────────────────── */
.hero { text-align: center; padding: 2rem 0 3rem; }
.hero h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  letter-spacing: -0.02em;
}
.hero p {
  color: var(--text-soft);
  font-size: 1.05rem;
  margin: 0;
}

/* ── Tags / genre pills ────────────────────────────────────────────── */
.section-title {
  font-size: 1.35rem;
  margin: 3rem 0 1.25rem;
  letter-spacing: -0.01em;
}
.tags {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}
.tag {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.6rem 1rem;
  font-size: 0.9rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: transform 120ms, box-shadow 120ms, color 120ms;
  display: inline-flex;
  flex-direction: column;
  line-height: 1.2;
}
.tag .tag-count {
  font-size: 0.75rem;
  color: var(--text-soft);
  margin-top: 0.15rem;
}
.tag:hover { color: var(--accent-strong); transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(37, 99, 235, 0.08); }

/* ── Cards grid ────────────────────────────────────────────────────── */
.cards {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr));
}
.card {
  background: var(--surface);
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: 0 1px 0 var(--border);
  display: flex;
  flex-direction: column;
  transition: transform 160ms, box-shadow 160ms;
}
.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 36px rgba(15, 76, 117, 0.10);
}
.card .thumb {
  position: relative;
  aspect-ratio: 1 / 1;
  background: linear-gradient(135deg, #93c5fd, #2563eb);
  overflow: hidden;
}
.card .thumb svg { width: 100%; height: 100%; display: block; }
.card .body {
  padding: 0.9rem 1rem 1.1rem;
}
.card h3 {
  font-size: 1rem;
  margin: 0 0 0.25rem;
  letter-spacing: -0.01em;
}
.card p {
  color: var(--text-soft);
  font-size: 0.88rem;
  margin: 0;
}

/* ── Article (FAQ / about / rules) ─────────────────────────────────── */
.article { max-width: 42rem; margin: 0 auto; }
.article a.back {
  color: var(--text-soft);
  text-decoration: none;
  font-size: 0.9rem;
}
.article h1 { font-size: 1.75rem; margin: 1rem 0 1.25rem; letter-spacing: -0.01em; }
.article h2 { font-size: 1.1rem; margin: 2rem 0 0.5rem; letter-spacing: -0.01em; }
.article p, .article li { color: var(--text-muted); line-height: 1.65; }
.article ul { padding-left: 1.25rem; }

/* ── Footer ────────────────────────────────────────────────────────── */
footer {
  border-top: 1px solid var(--border);
  padding: 2rem 1.5rem;
  text-align: center;
  color: var(--text-soft);
  font-size: 0.9rem;
}
footer .brand-foot {
  font-weight: 700;
  color: var(--accent);
  font-size: 1.1rem;
  margin-bottom: 0.4rem;
}
footer .links {
  margin: 0.75rem 0;
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}
footer .links a {
  color: var(--text-muted);
  text-decoration: none;
}
footer .links a:hover { color: var(--accent); }
footer .copy { font-size: 0.8rem; color: #94a3b8; }