/* Rain public site — Nordic color surface.
   Static, dependency-free, GitHub Pages friendly. */
:root {
  --polar-0: #1f222b;
  --polar-1: #2e3440;
  --polar-2: #3b4252;
  --polar-3: #434c5e;
  --snow-0: #eceff4;
  --snow-1: #e5e9f0;
  --snow-2: #d8dee9;
  --frost-0: #8fbcbb;
  --frost-1: #88c0d0;
  --frost-2: #81a1c1;
  --frost-3: #5e81ac;
  --aurora-yellow: #ebcb8b;
  --aurora-purple: #b48ead;
}

html {
  min-height: 100%;
  background:
    radial-gradient(circle at top left, rgba(136, 192, 208, 0.18), transparent 34rem),
    radial-gradient(circle at 85% 12%, rgba(180, 142, 173, 0.12), transparent 28rem),
    linear-gradient(135deg, var(--polar-0), var(--polar-1) 48%, #252b36);
}

body {
  box-sizing: border-box;
  margin: 0;
  color: var(--snow-1);
  background: transparent;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 18px;
  line-height: 1.65;
}

main {
  max-width: 880px;
  margin: 0 auto;
  padding: 3.5rem 1.25rem 4rem;
}

main::before {
  content: "";
  display: block;
  width: 5rem;
  height: 0.24rem;
  margin-bottom: 1.75rem;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--frost-0), var(--frost-2), var(--aurora-purple));
  box-shadow: 0 0 22px rgba(136, 192, 208, 0.45);
}

h1, h2, h3 {
  color: var(--snow-0);
  line-height: 1.18;
  letter-spacing: -0.025em;
}

h1 {
  margin-top: 0;
  font-size: clamp(2.4rem, 7vw, 4.8rem);
}

h2 {
  margin-top: 2.6rem;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(216, 222, 233, 0.16);
}

p, li { color: var(--snow-2); }
strong { color: var(--snow-0); }

a {
  color: var(--frost-1);
  text-decoration-color: rgba(143, 188, 187, 0.45);
  text-underline-offset: 0.18em;
}

a:hover, a:focus {
  color: var(--snow-0);
  text-decoration-color: var(--aurora-yellow);
}

blockquote {
  margin: 1.5rem 0;
  padding: 1rem 1.2rem;
  border-left: 0.28rem solid var(--frost-1);
  border-radius: 0 0.8rem 0.8rem 0;
  background: rgba(46, 52, 64, 0.72);
}

code {
  padding: 0.12rem 0.36rem;
  border-radius: 0.35rem;
  color: var(--aurora-yellow);
  background: rgba(59, 66, 82, 0.9);
}

table {
  width: 100%;
  border-collapse: collapse;
  overflow: hidden;
  margin: 1.25rem 0;
  border: 1px solid rgba(216, 222, 233, 0.18);
  border-radius: 0.9rem;
  background: rgba(46, 52, 64, 0.58);
}

th, td {
  padding: 0.75rem 0.85rem;
  border-bottom: 1px solid rgba(216, 222, 233, 0.14);
  text-align: left;
}

th {
  color: var(--snow-0);
  background: rgba(67, 76, 94, 0.72);
}

tr:last-child td { border-bottom: 0; }

hr {
  border: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(136, 192, 208, 0.55), transparent);
}

.site-footer {
  margin-top: 4rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(216, 222, 233, 0.16);
  color: rgba(216, 222, 233, 0.68);
  font-size: 0.92rem;
}

@media (max-width: 620px) {
  main { padding-top: 2rem; }
  table { display: block; overflow-x: auto; }
}