/* Physics Unscripted · Sims. Brand colours from physics/brand (kit/src/Unscripted.tsx, sampled from avatar-1024.png). */
:root {
  --navy: #021032; --navy-hi: #0a1e52; --navy-deep: #010822;
  --cyan: #02fbff; --red: #fe1022; --blue: #0a64fa; --green: #18f427; --gold: #edb94e; --slate: #9fb3d9;

  --bg: #f3f6fb; --surface: #ffffff; --surface-2: #e9eef7; --text: #0b1430; --muted: #4a5878;
  --border: #d5ddeb; --accent: #00718f; --accent-ink: #ffffff; --focus: #0a64fa;
  --shadow: 0 1px 2px rgba(2, 16, 50, .06), 0 8px 24px rgba(2, 16, 50, .07);
  --head: "Avenir Next Condensed", "Roboto Condensed", "Arial Narrow", system-ui, sans-serif;
  --body: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --num: "DIN Alternate", "SF Mono", ui-monospace, Menlo, Consolas, monospace;
  --radius: 14px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #010822; --surface: #061336; --surface-2: #0a1d4a; --text: #eaf2ff; --muted: #9fb3d9;
    --border: #1a2c5c; --accent: #02fbff; --accent-ink: #021032; --focus: #5ffcff;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 10px 30px rgba(0, 0, 0, .35);
    color-scheme: dark;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.55 var(--body); min-height: 100vh; display: flex; flex-direction: column;
}
a { color: var(--accent); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; border-radius: 6px; }
img, svg, canvas { display: block; max-width: 100%; }
.wrap { width: 100%; max-width: 1080px; margin: 0 auto; padding: 0 16px; }

/* header */
.top { border-bottom: 1px solid var(--border); background: var(--surface); }
.top .wrap { display: flex; align-items: center; gap: 12px; min-height: 60px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); }
.brand img { width: 36px; height: 36px; border-radius: 50%; }
.brand b { font: 800 19px/1 var(--head); letter-spacing: .04em; text-transform: uppercase; font-stretch: condensed; }
.brand b span { color: var(--accent); }
.brand small { display: block; font: 600 11px/1.2 var(--body); letter-spacing: .14em; text-transform: uppercase; color: var(--muted); margin-top: 3px; }
.top nav { margin-left: auto; display: flex; gap: 14px; font-size: 14px; }
.top nav a { color: var(--muted); text-decoration: none; }
.top nav a:hover, .top nav a[aria-current] { color: var(--text); }

main { flex: 1; padding: 24px 0 40px; }
h1, h2, h3 { font-family: var(--head); font-stretch: condensed; line-height: 1.1; letter-spacing: .01em; }
h1 { font-size: clamp(30px, 7vw, 46px); font-weight: 800; margin: 6px 0 8px; text-transform: uppercase; }
h2 { font-size: 22px; font-weight: 800; margin: 28px 0 8px; text-transform: uppercase; letter-spacing: .03em; }
.lede { color: var(--muted); margin: 0 0 18px; max-width: 62ch; }
.kicker { font: 700 12px/1 var(--body); letter-spacing: .16em; text-transform: uppercase; color: var(--accent); }

/* home */
.hero { padding: 8px 0 6px; }
.grid { display: grid; gap: 16px; grid-template-columns: 1fr; margin-top: 20px; }
@media (min-width: 640px) { .grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 960px) { .grid { grid-template-columns: repeat(3, 1fr); } }
.card {
  display: flex; flex-direction: column; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden; text-decoration: none; color: var(--text); box-shadow: var(--shadow);
  transition: transform .15s ease, border-color .15s ease;
}
.card:hover { transform: translateY(-2px); border-color: var(--accent); }
.card .thumb { aspect-ratio: 16 / 10; background: radial-gradient(90% 90% at 50% 40%, var(--navy-hi), var(--navy) 60%, var(--navy-deep)); }
.card .thumb svg { width: 100%; height: 100%; }
.card .body { padding: 14px 16px 16px; }
.card h3 { margin: 0 0 4px; font-size: 22px; font-weight: 800; text-transform: uppercase; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.card .tag { margin-top: 10px; font: 600 12px/1 var(--body); color: var(--accent); letter-spacing: .08em; text-transform: uppercase; }

/* sim page */
.sim { display: grid; gap: 16px; grid-template-columns: 1fr; }
@media (min-width: 900px) { .sim { grid-template-columns: minmax(0, 1fr) 320px; align-items: start; } }
.stage {
  position: relative; border-radius: var(--radius); overflow: hidden; border: 1px solid #0d2260;
  background: radial-gradient(110% 80% at 50% 45%, var(--navy-hi) 0%, var(--navy) 55%, var(--navy-deep) 100%);
  box-shadow: var(--shadow);
}
.stage canvas { width: 100%; height: auto; touch-action: manipulation; }
.hud {
  display: flex; flex-wrap: wrap; gap: 6px 14px; padding: 10px 12px; color: #eaf2ff;
  font: 600 13px/1.3 var(--body); background: rgba(1, 8, 34, .72); border-bottom: 1px solid rgba(2, 251, 255, .14);
}
.hud .stat { display: flex; flex-direction: column; min-width: 64px; }
.hud .stat i { font-style: normal; font-size: 10.5px; letter-spacing: .12em; text-transform: uppercase; color: var(--slate); }
.hud .stat b { font: 700 20px/1.15 var(--num); font-variant-numeric: tabular-nums; color: #fff; }
.hud .stat b.cyan { color: var(--cyan); }
.hud .stat b.gold { color: var(--gold); }
.pill {
  position: absolute; right: 10px; bottom: 10px; padding: 4px 10px; border-radius: 999px;
  font: 700 11px/1.4 var(--body); letter-spacing: .1em; text-transform: uppercase;
  background: rgba(1, 8, 34, .78); color: var(--cyan); border: 1px solid rgba(2, 251, 255, .35); pointer-events: none;
}
.pill[hidden] { display: none; }
.banner {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); padding: 10px 16px; border-radius: 12px;
  background: rgba(1, 8, 34, .86); border: 1px solid var(--gold); color: #fff; text-align: center; pointer-events: none;
  font: 800 clamp(18px, 5vw, 26px)/1.15 var(--head); letter-spacing: .04em; text-transform: uppercase; font-stretch: condensed;
  box-shadow: 0 0 30px rgba(237, 185, 78, .35); max-width: calc(100% - 32px);
}
.banner small { display: block; font: 600 12px/1.4 var(--body); letter-spacing: .06em; color: var(--slate); text-transform: none; margin-top: 4px; }
.banner[hidden] { display: none; }

.panel { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; box-shadow: var(--shadow); }
.controls { display: grid; gap: 14px; }
.row { display: grid; gap: 6px; }
.row label, .row .lbl { display: flex; justify-content: space-between; gap: 8px; font-size: 14px; font-weight: 600; }
.row output { font: 700 14px/1.2 var(--num); color: var(--accent); font-variant-numeric: tabular-nums; }
.row .hint { font-size: 12.5px; color: var(--muted); }
input[type="range"] { width: 100%; height: 32px; margin: 0; accent-color: var(--accent); background: transparent; }
.check { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; }
.check input { width: 20px; height: 20px; margin: 1px 0 0; accent-color: var(--accent); flex: none; }
.seg { display: grid; grid-template-columns: repeat(2, 1fr); gap: 6px; }
@media (min-width: 420px) { .seg.four { grid-template-columns: repeat(4, 1fr); } }
.seg button { font-size: 13px; padding: 9px 6px; }
.seg button[aria-pressed="true"] { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.btns { display: flex; flex-wrap: wrap; gap: 8px; }
button {
  font: 700 14px/1 var(--body); color: var(--text); background: var(--surface-2); border: 1px solid var(--border);
  border-radius: 10px; padding: 11px 14px; min-height: 44px; cursor: pointer; touch-action: manipulation;
}
button:hover { border-color: var(--accent); }
button.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
button:disabled { opacity: .5; cursor: default; }

.note { margin-top: 16px; }
.note h2 { margin-top: 0; }
.note p, .note li { color: var(--text); max-width: 68ch; }
.note ul { padding-left: 20px; }
.note .src { color: var(--muted); font-size: 14px; }
.reel { display: inline-flex; align-items: center; gap: 8px; margin-top: 4px; font-weight: 700; }

/* footer */
.foot { border-top: 1px solid var(--border); background: var(--surface); padding: 20px 0 26px; font-size: 14px; color: var(--muted); }
.foot .wrap { display: grid; gap: 10px; }
.social { display: flex; flex-wrap: wrap; gap: 8px 18px; }
.social a { display: inline-flex; align-items: center; gap: 7px; font-weight: 600; text-decoration: none; color: var(--text); }
.social a:hover { color: var(--accent); }
.social svg { width: 18px; height: 18px; fill: currentColor; }
.privacy { font-size: 12.5px; }

.sr { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
@media (prefers-reduced-motion: reduce) { .card { transition: none; } .card:hover { transform: none; } }
.digits b { font: inherit; color: var(--gold); }
.digits span { color: var(--slate); opacity: .7; }
.pi { text-transform: none; }