:root {
  --bg: #f6f7f9;
  --panel: #ffffff;
  --text: #1b1f24;
  --muted: #6b7280;
  --border: #e3e6ea;
  --accent: #e5484d;
  --accent-soft: #fdecec;
  --stage: #e9ecf0;
  --ok: #18794e;
  --ok-soft: #e9f6ef;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111317;
    --panel: #1a1d22;
    --text: #e8eaed;
    --muted: #9aa0a6;
    --border: #2c3036;
    --accent: #ff6369;
    --accent-soft: #3a1d1f;
    --stage: #0b0c0f;
    --ok: #4cc38a;
    --ok-soft: #14271d;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  background: var(--bg);
  color: var(--text);
  font: 14px/1.45 -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, sans-serif;
  display: flex;
  flex-direction: column;
}
a { color: inherit; }
code { font: 12.5px/1.4 ui-monospace, SFMono-Regular, Menlo, monospace; }
h1 { font-size: 22px; margin: 0 0 16px; }
h2 { font-size: 16px; margin: 28px 0 10px; }
.muted { color: var(--muted); }
.small { font-size: 12px; }
.spacer { flex: 1; }
.error { color: var(--accent); background: var(--accent-soft); padding: 8px 12px; border-radius: 8px; }
.ok { color: var(--ok); background: var(--ok-soft); padding: 8px 12px; border-radius: 8px; }

.topbar, .subbar, .controls {
  display: flex; flex-wrap: wrap; align-items: center; gap: 10px 14px;
  padding: 10px 16px; background: var(--panel); border-bottom: 1px solid var(--border);
}
.brand { font-weight: 700; font-size: 16px; text-decoration: none; display: flex; align-items: center; gap: 8px; }
.dot { width: 10px; height: 10px; border-radius: 50%; background: radial-gradient(circle, #ff0 0, #f80 50%, #e00 100%); }

main.narrow { width: 100%; max-width: 640px; margin: 0 auto; padding: 24px 16px 48px; }
main.wide { width: 100%; max-width: 1000px; margin: 0 auto; padding: 24px 16px 48px; }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 16px; }
.empty-card { text-align: center; padding: 40px 24px; }
.empty-card h2 { margin-top: 0; }

.form { display: flex; flex-direction: column; gap: 14px; }
.form.inline { flex-direction: row; flex-wrap: wrap; align-items: flex-end; }
.form label { display: flex; flex-direction: column; gap: 6px; font-weight: 500; }
.form.inline label { flex: 1 1 200px; }
input, select, textarea, .btn {
  font: inherit; color: var(--text); background: var(--panel);
  border: 1px solid var(--border); border-radius: 8px; padding: 7px 10px;
}
textarea { resize: vertical; font-family: ui-monospace, Menlo, monospace; font-size: 13px; }
.btn { cursor: pointer; text-decoration: none; display: inline-block; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600; }

.snippet { display: flex; gap: 12px; align-items: center; }
.snippet code { flex: 1; overflow-x: auto; white-space: nowrap; padding: 4px 0; }

.table-wrap { padding: 0; overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 12px 16px; border-bottom: 1px solid var(--border); }
th { font-size: 12px; color: var(--muted); font-weight: 600; }
tr:last-child td { border-bottom: 0; }

.tabs, .seg { display: inline-flex; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.tabs a, .seg button {
  border: 0; background: transparent; color: var(--muted); text-decoration: none;
  padding: 6px 12px; font: inherit; cursor: pointer;
}
.tabs a + a, .seg button + button { border-left: 1px solid var(--border); }
.tabs a.on, .seg button.on { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.chk { display: inline-flex; align-items: center; gap: 6px; color: var(--muted); cursor: pointer; }
.stats { color: var(--muted); font-variant-numeric: tabular-nums; }
.legend { display: inline-flex; align-items: center; gap: 6px; color: var(--muted); font-size: 12px; }
.legend .bar { width: 90px; height: 8px; border-radius: 4px; background: linear-gradient(90deg, blue, cyan, lime, yellow, red); }
#page { max-width: 420px; }

/* Heatmap stage */
.stage { flex: 1; min-height: 0; background: var(--stage); overflow: hidden; position: relative; }
#frame-box { position: absolute; top: 16px; transform-origin: top left; background: #fff; box-shadow: 0 2px 16px rgba(0,0,0,.15); }
#frame-box .replayer-wrapper, #frame-box iframe { width: 100% !important; height: 100% !important; }
#frame-box iframe { border: 0; display: block; }
#scroller { position: absolute; top: 16px; overflow-y: auto; overflow-x: hidden; }
#scroller-inner { position: relative; }
#heat-dim, #heat-canvas { position: absolute; left: 0; top: 0; pointer-events: none; }
#heat-dim { background: rgba(10, 12, 20, 0.45); }
#scroller[hidden], #frame-box[hidden] { display: none; }
#frame-box .replayer-wrapper { transform: none !important; position: relative; left: 0 !important; top: 0 !important; float: none !important; }
#frame-box .replayer-mouse, #frame-box .replayer-mouse-tail { display: none !important; }
.empty {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  text-align: center; color: var(--muted); padding: 24px;
}
.empty[hidden] { display: none; }

/* Recordings */
.rec-view { flex: 1; min-height: 0; display: flex; }
#rec-list { width: 360px; max-width: 45%; border-right: 1px solid var(--border); background: var(--panel); overflow: auto; }
#rec-list .item { padding: 12px 16px; border-bottom: 1px solid var(--border); cursor: pointer; }
#rec-list .item:hover { background: var(--bg); }
#rec-list .item.on { background: var(--accent-soft); }
#rec-list .item b { display: block; margin-bottom: 2px; word-break: break-all; }
#rec-list .meta { color: var(--muted); font-size: 12px; }
#rec-list .note { padding: 16px; color: var(--muted); }
#player-wrap { flex: 1; min-width: 0; background: var(--stage); display: flex; align-items: flex-start; justify-content: center; padding: 16px; overflow: auto; position: relative; }

@media (max-width: 700px) {
  .rec-view { flex-direction: column; }
  #rec-list { width: auto; max-width: none; max-height: 40%; border-right: 0; border-bottom: 1px solid var(--border); }
}

/* Segments */
.row-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.row-head h1 { margin: 0; }
.templates { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; }
.template { text-decoration: none; display: flex; flex-direction: column; gap: 4px; }
.template:hover { border-color: var(--accent); }
.tag { display: inline-block; font-size: 11px; font-weight: 600; padding: 1px 6px; border-radius: 4px; background: var(--bg); border: 1px solid var(--border); }
.badge { font-size: 11px; color: var(--muted); border: 1px solid var(--border); border-radius: 10px; padding: 1px 8px; margin-left: 6px; }
tr.inactive td { opacity: 0.6; }
.small-btn { padding: 4px 10px; font-size: 13px; }
.guide details { padding: 6px 0; }
.guide details + details { border-top: 1px solid var(--border); }
.guide summary { cursor: pointer; }
.guide ol { margin: 8px 0 4px; padding-left: 20px; }
.guide li { margin: 4px 0; }
fieldset { border: 1px solid var(--border); border-radius: 10px; padding: 12px; margin: 0; display: flex; flex-direction: column; gap: 8px; }
legend { padding: 0 6px; font-weight: 500; }
legend select { margin-left: 4px; padding: 3px 6px; }
.rule { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.rule .rule-type { flex: 1 1 180px; }
.rule .rule-op { flex: 0 1 150px; }
.rule input.rule-value, .rule select.rule-value { flex: 1 1 140px; min-width: 0; }
.rule span.rule-value { flex: 1 1 140px; }
.btn.icon { padding: 4px 10px; font-size: 16px; line-height: 1; }
.checks .chk { color: var(--text); }
.actions { display: flex; gap: 8px; }
.danger-zone { margin-top: 16px; text-align: right; }
.btn.danger { color: var(--accent); }
.form label.chk { flex-direction: row; align-items: center; font-weight: 400; }
#add-rule { align-self: flex-start; }
td code { white-space: nowrap; }

/* Data & storage */
.stat-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(110px, 1fr)); gap: 12px; margin-bottom: 16px; }
.stat-row div { display: flex; flex-direction: column; }
.stat-row b { font-size: 18px; font-variant-numeric: tabular-nums; }
.clear-form { margin-bottom: 8px; }

/* Install checks */
.checks-list { display: flex; flex-direction: column; gap: 10px; margin-bottom: 16px; }
.check { display: flex; gap: 10px; align-items: flex-start; }
.check .mark { font-weight: 700; width: 16px; }
.check.pass .mark { color: var(--ok); }
.check.fail .mark { color: var(--accent); }