:root {
  --bg: #f4f5f7;
  --card: #fff;
  --text: #1d2330;
  --muted: #667085;
  --border: #e3e6eb;
  --accent: #2f5bea;
  --ok: #157f3b;
  --warn: #b54708;
  --bad: #b42318;
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  color: var(--text);
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); line-height: 1.5; }
[hidden] { display: none !important; }
h1, h2, h3 { margin: 0 0 0.5rem; line-height: 1.25; }
.muted { color: var(--muted); }
.small { font-size: 0.85rem; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 1.25rem; }
.narrow { max-width: 480px; margin: 3rem auto; }
label { display: block; margin: 0.5rem 0; }
input:not([type]), input[name], textarea { width: 100%; padding: 0.5rem; border: 1px solid var(--border); border-radius: 6px; font: inherit; }
input[type='radio'], input[type='checkbox'] { width: auto; }
.check { display: flex; gap: 0.5rem; align-items: center; margin: 1rem 0; }
button { background: var(--accent); color: #fff; border: 0; border-radius: 6px; padding: 0.55rem 1rem; font: inherit; cursor: pointer; }
button:disabled { opacity: 0.5; cursor: not-allowed; }
button.link { background: none; color: inherit; padding: 0; text-decoration: underline; }
.error { color: var(--bad); min-height: 1.2em; }
.topbar { display: flex; gap: 0.75rem; align-items: center; padding: 0.75rem 1rem; background: var(--card); border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.topbar strong { margin-right: auto; }
.pill { font-size: 0.8rem; padding: 0.15rem 0.6rem; border-radius: 999px; background: var(--border); }
.pill.ok { background: #dcfae6; color: var(--ok); }
.pill.warn { background: #fef0c7; color: var(--warn); }
.layout { display: grid; grid-template-columns: 1fr 320px; gap: 1rem; padding: 1rem; max-width: 1200px; margin: 0 auto; }
@media (max-width: 800px) { .layout { grid-template-columns: 1fr; } }
ol li { margin-bottom: 1.25rem; }
.log ul { list-style: none; padding: 0; margin: 0; max-height: 60vh; overflow: auto; font-size: 0.85rem; }
.log li { padding: 0.3rem 0; border-bottom: 1px solid var(--border); }
.log li.bad { color: var(--bad); }
.log li.info { color: var(--muted); }
.overlay { position: fixed; inset: 0; background: rgb(0 0 0 / 0.5); display: grid; place-items: center; padding: 1rem; }
.wide { max-width: 760px; }
.precheck { display: grid; grid-template-columns: 320px 1fr; gap: 1rem; align-items: start; }
@media (max-width: 700px) { .precheck { grid-template-columns: 1fr; } }
.cam-box { position: relative; }
.cam-box video { width: 100%; border-radius: 8px; background: #000; aspect-ratio: 4 / 3; transform: scaleX(-1); }
.cam-box img { position: absolute; right: 8px; bottom: 8px; width: 96px; border: 2px solid #fff; border-radius: 6px; }
.checks { list-style: none; padding: 0; margin: 0 0 0.75rem; }
.checks li { padding: 0.3rem 0; }
.checks li.ok { color: var(--ok); }
.checks li.bad { color: var(--bad); }
.checks li.warn { color: var(--warn); }
.actions { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-top: 1rem; }
button.secondary { background: transparent; color: var(--accent); border: 1px solid var(--accent); }
.self-view { width: 100%; border-radius: 8px; background: #000; aspect-ratio: 4 / 3; transform: scaleX(-1); margin-bottom: 0.75rem; }
.metrics { font-family: ui-monospace, Consolas, monospace; font-size: 0.78rem; margin: 0 0 0.75rem; line-height: 1.5; }
.metrics .ok { color: var(--ok); }
.metrics .bad { color: var(--bad); }
table { border-collapse: collapse; width: 100%; margin-top: 0.5rem; }
td, th { text-align: left; padding: 0.35rem 0.5rem; border-bottom: 1px solid var(--border); }