:root {
  --bg: #0f172a;
  --panel: #1e293b;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #38bdf8;
  --n: #2563eb;
  --s: #f59e0b;
  --v: #dc2626;
  --err: #ef4444;
  --ok: #22c55e;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; padding: 0; font-family: system-ui, sans-serif;
  background: var(--bg); color: var(--text); }

header { display: flex; align-items: center; gap: 0.75rem;
  padding: 1rem 1.5rem; border-bottom: 1px solid #334155; }
header h1 { margin: 0; font-size: 1.25rem; }
header .subtitle { margin: 0 1rem 0 0; color: var(--muted); font-size: 0.9rem; }
.dot { width: 12px; height: 12px; border-radius: 50%; display: inline-block; }
.dot-unknown { background: var(--muted); }
.dot-ok { background: var(--ok); }
.dot-err { background: var(--err); }

main { max-width: 960px; margin: 0 auto; padding: 1rem 1.5rem; display: grid; gap: 1rem; }

.panel { background: var(--panel); border-radius: 8px; padding: 1rem 1.25rem; }
.panel h2 { margin-top: 0; font-size: 1rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.05em; }

.row { display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; margin-bottom: 0.75rem; }
.row label { display: flex; gap: 0.4rem; align-items: center; font-size: 0.9rem; }
input[type="file"], input[type="number"], select {
  background: #0f172a; color: var(--text);
  border: 1px solid #334155; border-radius: 4px; padding: 0.3rem 0.5rem; }

button { background: var(--accent); color: #0f172a; border: 0; padding: 0.5rem 1rem;
  border-radius: 4px; font-weight: 600; cursor: pointer; }
button:disabled { opacity: 0.5; cursor: wait; }

.error-banner { background: var(--err); color: white; padding: 0.75rem 1rem;
  border-radius: 4px; margin-top: 1rem; }

.cards { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.card { background: #0f172a; border: 1px solid #334155; border-radius: 6px;
  padding: 0.75rem 1rem; min-width: 100px; }
.card .label { color: var(--muted); font-size: 0.75rem; text-transform: uppercase; }
.card .value { font-size: 1.5rem; font-weight: 700; }
.card.n .value { color: var(--n); }
.card.s .value { color: var(--s); }
.card.v .value { color: var(--v); }

.run-metadata { color: var(--muted); font-size: 0.85rem; margin: 0.5rem 0 0 0; }

.plot-area { min-height: 360px; background: #0f172a; border-radius: 4px; padding: 0.5rem; }
.empty-state { color: var(--muted); text-align: center; padding: 5rem 1rem; }

.table-scroll { max-height: 240px; overflow-y: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { text-align: left; padding: 0.4rem 0.5rem; border-bottom: 1px solid #334155; }
th { position: sticky; top: 0; background: var(--panel); }
.badge { display: inline-block; padding: 0.1rem 0.5rem; border-radius: 3px;
  font-size: 0.75rem; font-weight: 700; color: white; }
.badge.n { background: var(--n); }
.badge.s { background: var(--s); }
.badge.v { background: var(--v); }
tbody tr { cursor: pointer; }
tbody tr:hover { background: #0f172a; }