/* ---------- Tokens ---------- */
:root {
  --bg-a: #e6f0ff;
  --bg-b: #c7dcff;
  --bg-c: #a9c8ff;
  --text: #0f1f3d;
  --muted: #4a5d80;
  --accent: #2563eb;
  --accent-ink: #ffffff;
  --glass-bg: rgba(255, 255, 255, 0.45);
  --glass-bg-strong: rgba(255, 255, 255, 0.62);
  --glass-border: rgba(255, 255, 255, 0.7);
  --glass-shadow: 0 8px 32px rgba(37, 99, 235, 0.14);
  --wave: rgba(255, 255, 255, 0.85);
  --blob-1: #7fb0ff;
  --blob-2: #b9a6ff;
  --blob-3: #6fd3ff;
  --blob-4: #ffffff;
  --blob-opacity: 0.7;
  --radius: 20px;
  --maxw: 1080px;
  --gutter: clamp(16px, 4vw, 32px);
}
:root[data-theme="dark"] {
  --bg-a: #0b1730;
  --bg-b: #112349;
  --bg-c: #1a3a75;
  --text: #e8f0ff;
  --muted: #9db2d6;
  --accent: #7fb0ff;
  --accent-ink: #0b1730;
  --glass-bg: rgba(20, 38, 76, 0.45);
  --glass-bg-strong: rgba(24, 46, 92, 0.65);
  --glass-border: rgba(160, 195, 255, 0.22);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
  --wave: rgba(160, 200, 255, 0.55);
  --blob-1: #2f6bff;
  --blob-2: #6a4bff;
  --blob-3: #1ea0d8;
  --blob-4: #3a5cff;
  --blob-opacity: 0.5;
}

/* ---------- Base ---------- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  line-height: 1.55;
  color: var(--text);
  background: linear-gradient(160deg, var(--bg-a), var(--bg-b) 55%, var(--bg-c));
  background-attachment: fixed;
  transition: background-color .3s, color .3s;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; border-radius: 8px; }
h1, h2, h3 { line-height: 1.15; margin: 0; letter-spacing: -0.02em; }
p { margin: 0; }
.muted { color: var(--muted); }
.small { font-size: .875rem; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
[hidden] { display: none !important; }

/* ---------- Background ---------- */
.bg { position: fixed; inset: 0; z-index: -1; overflow: hidden; pointer-events: none; }
.waves { position: absolute; inset: 0; width: 100%; height: 100%; }
.w { fill: none; stroke: var(--wave); stroke-linecap: round; vector-effect: non-scaling-stroke; }
.w1 { stroke-width: 2.5; opacity: .55; }
.w2 { stroke-width: 1.5; opacity: .4; }
.w3 { stroke-width: 1.5; opacity: .3; }
.blob { position: absolute; border-radius: 50%; filter: blur(60px); opacity: var(--blob-opacity); }
.b1 { width: 46vmax; height: 46vmax; left: -14vmax; top: -12vmax; background: var(--blob-1); animation: float1 26s ease-in-out infinite; }
.b2 { width: 38vmax; height: 38vmax; right: -12vmax; top: 18vh; background: var(--blob-2); animation: float2 32s ease-in-out infinite; }
.b3 { width: 34vmax; height: 34vmax; left: 12vw; bottom: -16vmax; background: var(--blob-3); animation: float3 29s ease-in-out infinite; }
.b4 { width: 20vmax; height: 20vmax; right: 18vw; bottom: 8vh; background: var(--blob-4); opacity: .45; animation: float1 36s ease-in-out infinite reverse; }
@keyframes float1 { 50% { transform: translate(6vw, 5vh) scale(1.08); } }
@keyframes float2 { 50% { transform: translate(-7vw, 6vh) scale(.94); } }
@keyframes float3 { 50% { transform: translate(5vw, -6vh) scale(1.1); } }
.w1 { animation: drift 22s ease-in-out infinite alternate; }
.w2 { animation: drift 28s ease-in-out infinite alternate-reverse; }
.w3 { animation: drift 34s ease-in-out infinite alternate; }
@keyframes drift { to { transform: translateX(-60px); } }

/* ---------- Glass ---------- */
.glass {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow), inset 0 1px 0 rgba(255, 255, 255, 0.35);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  backdrop-filter: blur(18px) saturate(160%);
}
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .glass { background: var(--glass-bg-strong); }
}

/* ---------- Layout ---------- */
main, .footer { width: min(100% - 2 * var(--gutter), var(--maxw)); margin-inline: auto; }
section { margin-top: clamp(48px, 9vw, 88px); }
.section-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 8px 16px; margin-bottom: 20px; }
h2 { font-size: clamp(1.4rem, 3.5vw, 1.9rem); }
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr)); }

/* Nav */
.nav {
  position: sticky; top: 12px; z-index: 10;
  display: flex; align-items: center; gap: 12px;
  width: min(100% - 2 * var(--gutter), var(--maxw));
  margin: 12px auto 0; padding: 8px 8px 8px 20px;
  border-radius: 999px;
}
.brand { font-weight: 700; color: var(--text); letter-spacing: -0.01em; margin-right: auto; }
.brand:hover { text-decoration: none; }
.nav nav { display: flex; gap: 4px; }
.nav nav a { color: var(--text); padding: 8px 12px; border-radius: 999px; font-size: .95rem; }
.nav nav a:hover { background: var(--glass-bg-strong); text-decoration: none; }
.icon-btn {
  display: grid; place-items: center; width: 40px; height: 40px; border-radius: 50%;
  border: 1px solid var(--glass-border); background: var(--glass-bg-strong); color: var(--text); cursor: pointer;
}
.icon-btn:hover { background: var(--glass-bg); }
.i-sun { display: none; }
:root[data-theme="dark"] .i-sun { display: block; }
:root[data-theme="dark"] .i-moon { display: none; }

/* Hero */
.hero { margin-top: clamp(32px, 8vw, 72px); }
.hero-card { border-radius: calc(var(--radius) + 8px); padding: clamp(24px, 6vw, 56px); }
.eyebrow { text-transform: uppercase; letter-spacing: .14em; font-size: .78rem; font-weight: 600; color: var(--accent); margin-bottom: 14px; }
h1 { font-size: clamp(2.2rem, 7vw, 3.8rem); }
.lead { margin-top: 16px; font-size: clamp(1.02rem, 2.4vw, 1.2rem); color: var(--muted); max-width: 56ch; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 12px 20px; border-radius: 999px; font-weight: 600;
  color: var(--text); background: var(--glass-bg-strong); border: 1px solid var(--glass-border);
}
.btn:hover { text-decoration: none; filter: brightness(1.04); }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: transparent; }

/* Cards */
.card { border-radius: var(--radius); padding: 20px; display: flex; flex-direction: column; gap: 10px; min-height: 140px; transition: transform .2s, box-shadow .2s; }
a.card { color: inherit; }
a.card:hover { text-decoration: none; transform: translateY(-3px); }
.card h3 { font-size: 1.1rem; overflow-wrap: anywhere; }
.card p { color: var(--muted); font-size: .95rem; }
.card .grow { flex: 1; }
.row { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 10px; }
.meta { margin-top: auto; font-size: .82rem; color: var(--muted); justify-content: space-between; }
.tag, .status {
  display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: .75rem; font-weight: 600;
  background: var(--glass-bg-strong); border: 1px solid var(--glass-border); color: var(--text);
}
.status { background: color-mix(in srgb, var(--accent) 18%, transparent); color: var(--accent); border-color: transparent; }
.dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; margin-right: 6px; background: var(--lang, var(--muted)); }
.skeleton { background: linear-gradient(100deg, var(--glass-bg) 30%, var(--glass-bg-strong) 50%, var(--glass-bg) 70%); background-size: 200% 100%; animation: shimmer 1.4s linear infinite; }
@keyframes shimmer { to { background-position: -200% 0; } }

/* Select */
.select { padding: 8px 12px; border-radius: 999px; color: var(--text); font: inherit; font-size: .9rem; }
.select option { color: #0f1f3d; }

/* Footer */
.footer { padding: 56px 0 40px; text-align: center; }
.noscript { width: min(100% - 32px, 600px); margin: 24px auto; padding: 16px; border-radius: var(--radius); }

/* Small screens */
@media (max-width: 520px) {
  .nav { padding-left: 16px; }
  .nav nav a { padding: 8px 8px; font-size: .9rem; }
  .brand { font-size: .95rem; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .blob, .w, .skeleton { animation: none; }
  .card { transition: none; }
}