/* Unblock Red: Slide Puzzle — marketing / legal site.
   Palette matches the in-app dark glass theme. */

:root {
  --primary: #FF6B6B;
  --secondary: #38BDF8;
  --background: #0A1628;
  --surface: #1E293B;
  --foreground: #F1F5F9;
  --muted: #94A3B8;
  --border: rgba(255, 255, 255, 0.1);
  --shadow: 0 16px 40px -12px rgba(0, 0, 0, 0.55);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 2rem 1.25rem 4rem;
  background:
    radial-gradient(ellipse at top, #162032 0%, #0A1628 55%);
  color: var(--foreground);
  font: 16px/1.7 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-text-size-adjust: 100%;
  min-height: 100vh;
}

main {
  max-width: 46rem;
  margin: 0 auto;
}

header {
  text-align: center;
  margin-bottom: 3rem;
}

header .icon {
  width: 112px;
  height: 112px;
  margin: 0 auto;
  border-radius: 24px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

header .icon img {
  display: block;
  width: 112px;
  height: 112px;
}

h1 {
  font-size: 2rem;
  line-height: 1.2;
  margin: 1.25rem 0 0.25rem;
}

h2 {
  font-size: 1.25rem;
  margin: 2.5rem 0 0.75rem;
  padding-bottom: 0.4rem;
  border-bottom: 2px solid var(--border);
}

h3 {
  font-size: 1.05rem;
  margin: 1.75rem 0 0.5rem;
}

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

.tagline {
  color: var(--muted);
  margin: 0;
}

.updated {
  display: inline-block;
  margin-top: 0.75rem;
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.85rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  border-radius: 20px;
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
}

.card.highlight {
  border-left: 4px solid var(--primary);
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  margin-top: 1.75rem;
}

.nav a {
  padding: 0.6rem 1.2rem;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  text-decoration: none;
  font-weight: 600;
  color: var(--foreground);
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 0.95rem;
}

th, td {
  text-align: left;
  padding: 0.7rem 0.6rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

th { color: var(--muted); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.04em; }

.table-wrap { overflow-x: auto; }

footer {
  margin-top: 4rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
  text-align: center;
}

ul { padding-left: 1.25rem; }
li { margin: 0.4rem 0; }