/* ringgrid interactive demo — standalone page styles.
   Theme-aware (light default, dark via prefers-color-scheme) so the demo reads
   well whether embedded in the light mdBook or opened directly in a dark UA. */

:root {
  --bg: #f6f7f9;
  --panel: #ffffff;
  --panel-2: #f0f2f6;
  --ink: #1b2432;
  --ink-soft: #5a6577;
  --edge: #d8dde6;
  --accent: #1478c8;
  --accent-ink: #ffffff;
  --good: #1a9a54;
  --warn: #c67b12;
  --bad: #d1433a;
  --shadow: 0 1px 3px rgba(20, 30, 50, 0.08);
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1220;
    --panel: #121a2b;
    --panel-2: #0e1626;
    --ink: #e6ebf4;
    --ink-soft: #8fa0ba;
    --edge: #24314a;
    --accent: #33c6e3;
    --accent-ink: #06111f;
    --good: #3ddc84;
    --warn: #f2a93d;
    --bad: #ff6b6b;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.5;
}

a { color: var(--accent); }

.app { display: flex; flex-direction: column; min-height: 100vh; }

/* ── Top bar ─────────────────────────────────────────────────────── */
.topbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 18px;
  background: var(--panel);
  border-bottom: 1px solid var(--edge);
}
.topbar .logo { width: 26px; height: 26px; }
.topbar .title { font-weight: 600; }
.topbar .title b { color: var(--accent); }
.topbar .tag { font-size: 11px; color: var(--ink-soft); text-transform: uppercase; letter-spacing: 0.06em; }
.topbar .spacer { flex: 1; }
.topbar .home { font-size: 13px; text-decoration: none; }
.topbar .ver { font-family: var(--mono); font-size: 11px; color: var(--ink-soft); }

/* ── Layout ──────────────────────────────────────────────────────── */
.layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 14px;
  padding: 14px;
  flex: 1;
  align-items: start;
}
@media (max-width: 820px) { .layout { grid-template-columns: 1fr; } }

.card {
  background: var(--panel);
  border: 1px solid var(--edge);
  border-radius: 10px;
  padding: 14px;
  box-shadow: var(--shadow);
  margin-bottom: 14px;
}
.sidebar .card:last-child, .main .card:last-child { margin-bottom: 0; }

.section-title { font-size: 12px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-soft); margin: 0 0 10px; }

/* ── Run row ─────────────────────────────────────────────────────── */
.run-row { display: flex; flex-direction: column; gap: 8px; }
.btn {
  border: 1px solid var(--edge);
  background: var(--panel-2);
  color: var(--ink);
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: transparent; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.check { display: flex; align-items: center; gap: 7px; font-size: 13px; color: var(--ink-soft); cursor: pointer; }
.status { font-size: 12px; color: var(--ink-soft); font-family: var(--mono); }
.status.error { color: var(--bad); }
.timing { font-size: 11px; color: var(--ink-soft); font-family: var(--mono); }

/* ── Fields ──────────────────────────────────────────────────────── */
.field { margin-bottom: 10px; }
.field:last-child { margin-bottom: 0; }
.field label { display: block; font-size: 12px; color: var(--ink-soft); margin-bottom: 4px; }
.field select {
  width: 100%;
  padding: 7px 8px;
  border: 1px solid var(--edge);
  border-radius: 7px;
  background: var(--panel-2);
  color: var(--ink);
  font-size: 13px;
}

/* ── Gallery ─────────────────────────────────────────────────────── */
.gallery { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.thumb {
  border: 1px solid var(--edge);
  border-radius: 8px;
  background: var(--panel-2);
  padding: 0;
  cursor: pointer;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  text-align: left;
}
.thumb.active { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.thumb img { width: 100%; aspect-ratio: 5 / 4; object-fit: cover; display: block; background: #000; }
.thumb .cap { font-size: 11px; padding: 5px 6px; color: var(--ink); }
.thumb.upload { align-items: center; justify-content: center; gap: 2px; color: var(--ink-soft); min-height: 92px; }
.thumb.upload .plus { font-size: 22px; line-height: 1; }
.gallery-caption { font-size: 12px; color: var(--ink-soft); margin: 9px 0 0; }

/* ── Overlay toggles ─────────────────────────────────────────────── */
.toggles { display: flex; flex-direction: column; gap: 7px; }

/* ── Stage / viewport ────────────────────────────────────────────── */
.stage-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 10px; gap: 10px; }
.stage-head h2 { font-size: 15px; margin: 0; }
.stage-head .sub { font-size: 12px; color: var(--ink-soft); }

.stats { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; }
.chip {
  font-size: 12px;
  font-family: var(--mono);
  background: var(--panel-2);
  border: 1px solid var(--edge);
  border-radius: 999px;
  padding: 3px 10px;
  color: var(--ink-soft);
}
.chip b { color: var(--ink); }
.chip.good b { color: var(--good); }
.chip.warn b { color: var(--warn); }
.chip.bad b { color: var(--bad); }

.viewport-wrap { width: 100%; overflow: auto; border: 1px solid var(--edge); border-radius: 8px; background: #05070d; }
.viewport { position: relative; margin: 0 auto; }
.viewport canvas { position: absolute; inset: 0; display: block; }
.viewport canvas.image { image-rendering: auto; }
.viewport canvas.overlay { width: 100%; height: 100%; }

.legend { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 10px; font-size: 12px; color: var(--ink-soft); }
.legend .item { display: inline-flex; align-items: center; gap: 6px; }
.legend .swatch { width: 12px; height: 12px; border-radius: 3px; display: inline-block; }

.footer { padding: 12px 18px; color: var(--ink-soft); font-size: 12px; display: flex; gap: 8px; flex-wrap: wrap; border-top: 1px solid var(--edge); }

.tooltip {
  position: fixed;
  pointer-events: none;
  background: var(--panel);
  border: 1px solid var(--edge);
  border-radius: 7px;
  padding: 6px 9px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink);
  box-shadow: var(--shadow);
  z-index: 20;
  display: none;
  white-space: pre;
}