/* Shared styles for whatisa.net content pages (the homepage keeps its own inline CSS). */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --primary: #6366f1;
  --primary-light: #a5b4fc;
  --secondary: #ec4899;
  --bg: #0f0f23;
  --surface: #1a1a2e;
  --text: #e2e8f0;
  --text-dim: #94a3b8;
  --accent: #fbbf24;
  --gradient: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at 20% 50%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
              radial-gradient(circle at 80% 80%, rgba(236, 72, 153, 0.08) 0%, transparent 50%),
              radial-gradient(circle at 40% 20%, rgba(251, 191, 36, 0.05) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

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

.container { max-width: 1000px; margin: 0 auto; padding: 0 20px; position: relative; z-index: 1; }

header {
  padding: 20px 0;
  backdrop-filter: blur(10px);
  background: rgba(15, 15, 35, 0.7);
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(99, 102, 241, 0.2);
}

nav { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px; }

.logo {
  font-size: 24px;
  font-weight: 700;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
}

.nav-links { display: flex; flex-wrap: wrap; gap: 24px; list-style: none; }
.nav-links a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.nav-links a:hover, .nav-links a.active { color: var(--primary-light); }

.hero { padding: 64px 0 32px; text-align: center; }
.hero h1 {
  font-size: clamp(30px, 5vw, 52px);
  margin-bottom: 16px;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.15;
}
.hero p { font-size: 19px; color: var(--text-dim); max-width: 680px; margin: 0 auto; line-height: 1.6; }

.card {
  background: var(--surface);
  border-radius: 20px;
  padding: 36px;
  margin-bottom: 28px;
  border: 1px solid rgba(99, 102, 241, 0.2);
}
.card h2 { font-size: 26px; margin-bottom: 16px; color: var(--accent); }
.card h3 { font-size: 19px; margin: 22px 0 10px; color: var(--text); }
.card p, .card li { font-size: 17px; line-height: 1.75; }
.card p { margin-bottom: 14px; }
.card ul, .card ol { margin: 0 0 16px 22px; }
.card li { margin-bottom: 6px; }
.card code {
  background: rgba(99, 102, 241, 0.15);
  padding: 2px 7px;
  border-radius: 4px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.92em;
}
.muted { color: var(--text-dim); font-size: 15px; }

.faq details { border-bottom: 1px solid rgba(148, 163, 184, 0.15); padding: 16px 0; }
.faq summary { cursor: pointer; font-size: 18px; font-weight: 600; list-style-position: outside; }
.faq details p { margin-top: 12px; }

/* Browse */
.letter-nav { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-bottom: 28px; }
.letter-nav a {
  display: inline-block;
  min-width: 40px;
  padding: 8px 10px;
  text-align: center;
  border-radius: 10px;
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid rgba(99, 102, 241, 0.3);
  color: var(--primary-light);
  text-decoration: none;
  font-weight: 600;
}
.letter-nav a.active { background: var(--primary); color: #fff; }
.prefix-list { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; list-style: none; }
.prefix-list li { margin: 0; }
.prefix-list a {
  display: inline-block;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.25);
  color: var(--primary-light);
  text-decoration: none;
  font-size: 15px;
}
.prefix-list a small { color: var(--text-dim); margin-left: 4px; }
.word-list {
  list-style: none;
  margin: 0 !important;
  columns: 4 180px;
  column-gap: 24px;
}
.word-list li { break-inside: avoid; margin: 0 0 6px; font-size: 16px; }
.word-list a { color: var(--primary-light); text-decoration: none; overflow-wrap: anywhere; }
.word-list a:hover { text-decoration: underline; }
.pager { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-top: 8px; }
.breadcrumb { font-size: 14px; color: var(--text-dim); margin-bottom: 12px; }
.breadcrumb a { color: var(--text-dim); }

footer {
  margin-top: 80px;
  padding: 40px 0;
  background: var(--surface);
  border-top: 1px solid rgba(99, 102, 241, 0.2);
}
.footer-content { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 30px; }
.footer-section h3 { font-size: 18px; margin-bottom: 15px; color: var(--primary-light); }
.footer-section p { color: var(--text-dim); line-height: 1.6; font-size: 14px; }
.footer-section p a { color: var(--text-dim); }
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { color: var(--text-dim); text-decoration: none; font-size: 14px; }
.footer-links a:hover { color: var(--primary-light); }
.footer-bottom {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid rgba(148, 163, 184, 0.1);
  color: var(--text-dim);
  font-size: 13px;
}

@media (max-width: 768px) {
  .nav-links { gap: 14px; }
  .nav-links a { font-size: 12px; }
  .hero { padding: 40px 0 20px; }
  .card { padding: 24px 18px; }
  .footer-content { grid-template-columns: 1fr; text-align: center; }
}