/* zooidai — shared styles. Mobile-first, theme-aware, zero-dep. */
:root {
  color-scheme: light dark;
  --bg:#0a0d10; --surface:#12181d; --surface-2:#172026; --fg:#e9eef3; --muted:#93a1b0;
  --accent:#5fd6c6; --accent-2:#7aa2ff; --accent-ink:#04231f; --border:#1e272e;
  --ring: color-mix(in srgb, var(--accent) 55%, transparent);
  --maxw:46rem; --pad:clamp(1.1rem,4vw,2.25rem); --radius:14px;
  --shadow:0 1px 2px rgba(0,0,0,.3), 0 10px 34px rgba(0,0,0,.28);
}
@media (prefers-color-scheme: light) {
  :root { --bg:#f6f8fa; --surface:#fff; --surface-2:#f3f6f9; --fg:#131a20; --muted:#586573;
    --accent:#0e9e8e; --accent-2:#3a63d8; --accent-ink:#fff; --border:#e2e8ee;
    --shadow:0 1px 2px rgba(16,24,32,.06), 0 12px 34px rgba(16,24,32,.07); }
}
:root[data-theme="dark"]  { color-scheme: dark; --bg:#0a0d10; --surface:#12181d; --surface-2:#172026; --fg:#e9eef3; --muted:#93a1b0; --accent:#5fd6c6; --accent-2:#7aa2ff; --accent-ink:#04231f; --border:#1e272e; }
:root[data-theme="light"] { color-scheme: light; --bg:#f6f8fa; --surface:#fff; --surface-2:#f3f6f9; --fg:#131a20; --muted:#586573; --accent:#0e9e8e; --accent-2:#3a63d8; --accent-ink:#fff; --border:#e2e8ee; }

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior:auto; } *,*::before,*::after { animation:none!important; transition:none!important; } }
body {
  margin: 0; color: var(--fg);
  background:
    radial-gradient(1100px 560px at 100% -10%, color-mix(in srgb, var(--accent) 10%, transparent), transparent 60%),
    radial-gradient(900px 500px at -10% 0%, color-mix(in srgb, var(--accent-2) 8%, transparent), transparent 55%),
    var(--bg);
  font: 16px/1.65 ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Inter, sans-serif;
  display: flex; flex-direction: column; min-height: 100vh; -webkit-font-smoothing: antialiased;
}
::selection { background: color-mix(in srgb, var(--accent) 32%, transparent); }
:focus-visible { outline: 2px solid var(--ring); outline-offset: 2px; border-radius: 4px; }

a { color: var(--accent); text-underline-offset: 2px; }
h1,h2,h3 { line-height: 1.14; letter-spacing: -0.025em; text-wrap: balance; }
h1 { font-size: clamp(2.1rem, 6.5vw, 3.35rem); margin: 0 0 .55rem; }
h2 { font-size: clamp(1.3rem, 4vw, 1.8rem); margin: 2.4rem 0 .7rem; }
p { margin: 0 0 1.05rem; max-width: 64ch; }
.lede { font-size: 1.18rem; color: var(--fg); }
.muted { color: var(--muted); }
.accent { color: var(--accent); }
.eyebrow { font: 600 .72rem/1.4 ui-monospace, "SF Mono", Menlo, monospace; letter-spacing: .16em; text-transform: uppercase; color: var(--accent); margin: 0 0 .85rem; }

.skip { position: absolute; left: -999px; }
.skip:focus { left: 1rem; top: 1rem; background: var(--accent); color: var(--accent-ink); padding: .5rem .8rem; border-radius: 8px; z-index: 20; }

.site-header {
  position: sticky; top: 0; z-index: 10;
  display: flex; flex-wrap: wrap; gap: .4rem 1.5rem; align-items: center;
  padding: .8rem var(--pad);
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  -webkit-backdrop-filter: saturate(150%) blur(10px); backdrop-filter: saturate(150%) blur(10px);
  border-bottom: 1px solid var(--border);
}
.brand { font-weight: 750; font-size: 1.3rem; text-decoration: none; color: var(--fg); letter-spacing: -0.04em; }
.brand .dot { color: var(--accent); }
.site-nav { display: flex; flex-wrap: wrap; gap: .1rem 1.2rem; margin-left: auto; }
.site-nav a { color: var(--muted); text-decoration: none; font-size: .95rem; padding: .2rem 0; border-bottom: 2px solid transparent; transition: color .15s; }
.site-nav a:hover { color: var(--fg); }
.site-nav a[aria-current="page"] { color: var(--fg); border-bottom-color: var(--accent); }

main { flex: 1; width: 100%; max-width: var(--maxw); margin: 0 auto; padding: clamp(1.6rem,5vw,3rem) var(--pad) 2rem; }
section { margin-bottom: 2.25rem; }

.hero { position: relative; padding: .5rem 0; }
.hero-net { position: absolute; inset: -2.5rem -1rem auto auto; width: min(58%, 21rem); height: auto; color: var(--accent); opacity: .5; pointer-events: none; z-index: -1; }
@media (max-width: 34rem) { .hero-net { opacity: .28; width: 78%; } }

.cta { display: flex; flex-wrap: wrap; gap: .7rem; margin-top: 1.6rem; }
.button {
  display: inline-flex; align-items: center; gap: .4rem; text-decoration: none; font-weight: 650;
  padding: .62rem 1.15rem; border-radius: var(--radius);
  background: var(--accent); color: var(--accent-ink); border: 1px solid transparent;
  transition: transform .12s, box-shadow .12s;
}
.button:hover { transform: translateY(-1px); box-shadow: var(--shadow); }
.button.ghost { background: transparent; color: var(--accent); border-color: var(--border); }
.button.ghost:hover { border-color: var(--accent); }

.cards { display: grid; gap: .9rem; grid-template-columns: 1fr; margin: 1.2rem 0; }
@media (min-width: 38rem) { .cards { grid-template-columns: 1fr 1fr; } }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.05rem 1.2rem; transition: border-color .15s, transform .12s; }
.card:hover { border-color: color-mix(in srgb, var(--accent) 45%, var(--border)); transform: translateY(-2px); }
.card h3 { margin: 0 0 .3rem; font-size: 1.05rem; }
.card p { margin: 0; color: var(--muted); font-size: .95rem; }

.stub { border: 1px dashed var(--border); border-radius: var(--radius); padding: 1rem 1.2rem; color: var(--muted); background: color-mix(in srgb, var(--surface) 55%, transparent); font-size: .95rem; }

.site-footer { border-top: 1px solid var(--border); padding: 1.5rem var(--pad); color: var(--muted); font-size: .9rem; }
.site-footer a { color: var(--muted); }
.site-footer a:hover { color: var(--fg); }