:root {
  --page: #0d0d0d;
  --surface: #1a1a19;
  --ink: #ffffff;
  --ink-2: #c3c2b7;
  --muted: #898781;
  --grid: #2c2c2a;
  --axis: #383835;
  --border: rgba(255, 255, 255, 0.10);
  --series-a: #3987e5;
  --series-b: #d95926;
  color-scheme: dark;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--page); color: var(--ink); font: 14px/1.4 system-ui, sans-serif; }
[hidden] { display: none !important; }
#swingView { height: 100vh; display: grid; grid-template-rows: auto 1fr auto; }
#swingView header, footer {
  display: flex; flex-wrap: wrap; gap: 12px 20px; align-items: center;
  padding: 10px 16px; background: var(--surface); border-bottom: 1px solid var(--border);
}
footer { border-top: 1px solid var(--border); border-bottom: 0; }
h1 { font-size: 16px; margin: 0 8px 0 0; }
label { color: var(--ink-2); }
select, button {
  background: var(--page); color: var(--ink); border: 1px solid var(--border);
  border-radius: 6px; padding: 5px 10px; font: inherit;
}
button { cursor: pointer; }
button:hover { border-color: var(--muted); }
.toggles { display: flex; gap: 14px; margin-left: auto; }
.phases { display: flex; gap: 6px; }
#frameInfo { margin-left: auto; color: var(--muted); font-variant-numeric: tabular-nums; }
main { display: grid; grid-template-columns: minmax(0, 1fr) 440px; min-height: 0; }
#stages { display: flex; gap: 12px; justify-content: center; align-items: center; padding: 12px; min-height: 0; overflow: hidden; }
.stage { display: flex; flex-direction: column; flex: none; }
.stage .name { color: var(--ink-2); font-size: 12px; height: 22px; padding: 0 0 4px; display: flex; gap: 6px; align-items: center; white-space: nowrap; overflow: hidden; }
.stage .key { width: 14px; height: 2px; display: inline-block; }
.stage .box { position: relative; }  /* sized by fitStages() */
.stage video, .stage canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.stage .phase {
  position: absolute; top: 10px; left: 10px; padding: 3px 8px; border-radius: 4px;
  background: rgba(0, 0, 0, 0.6); font-weight: 600; letter-spacing: 0.02em;
}
aside { background: var(--surface); border-left: 1px solid var(--border); padding: 12px 16px; overflow-y: auto; }
#legend { display: flex; gap: 16px; color: var(--ink-2); margin-bottom: 8px; font-size: 12px; }
#legend span { display: inline-flex; align-items: center; gap: 6px; }
#legend i { width: 14px; height: 2px; display: inline-block; }
table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
#readout td { padding: 3px 0; }
#readout td:first-child { color: var(--ink-2); }
#readout td:not(:first-child) { text-align: right; font-weight: 600; }
#readout td.b { color: var(--ink-2); font-weight: 400; }
.chart { margin-top: 14px; }
.chart .title { display: flex; justify-content: space-between; color: var(--ink-2); font-size: 12px; }
.chart .title b { color: var(--ink); font-weight: 600; font-variant-numeric: tabular-nums; }
.chart canvas { width: 100%; height: 96px; display: block; cursor: crosshair; }
details { margin-top: 18px; color: var(--ink-2); }
summary { cursor: pointer; }
#tooltip {
  position: fixed; pointer-events: none; background: var(--page); border: 1px solid var(--border);
  border-radius: 6px; padding: 6px 8px; font-size: 12px; z-index: 10; font-variant-numeric: tabular-nums;
}
#tooltip .row { display: flex; align-items: center; gap: 6px; }
#tooltip .row b { color: var(--ink); }
#tooltip .row span { color: var(--ink-2); }
#tooltip i { width: 12px; height: 2px; display: inline-block; }

/* Key-number cards */
:root { --good: #3fae6a; --warn: #d9a31e; --bad: #e0573c; }
.stat-group { margin-bottom: 14px; }
aside h3 { font-size: 11px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); margin: 0 0 6px; }
aside h3.live { margin-top: 18px; padding-top: 14px; border-top: 1px solid var(--border); }
.stat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 8px; }
.stat {
  background: var(--page); border: 1px solid var(--border); border-left: 3px solid var(--border);
  border-radius: 8px; padding: 8px 10px; min-width: 0;
}
.stat.good { border-left-color: var(--good); }
.stat.warn { border-left-color: var(--warn); }
.stat.bad { border-left-color: var(--bad); }
.stat-label { display: flex; align-items: center; justify-content: space-between; gap: 6px; color: var(--ink-2); font-size: 12px; }
.stat-value { font-size: 22px; font-weight: 650; font-variant-numeric: tabular-nums; line-height: 1.25; margin-top: 2px; white-space: nowrap; }
.stat-sub { color: var(--muted); font-size: 12px; font-variant-numeric: tabular-nums; }
.stat-b { margin-top: 4px; padding-left: 6px; border-left: 2px solid; color: var(--ink-2); font-size: 13px; font-variant-numeric: tabular-nums; }
.stat-foot { color: var(--muted); font-size: 11px; margin: 0; }
button.info {
  flex: none; width: 20px; height: 20px; min-height: 0; padding: 0; border-radius: 50%;
  font: italic 600 12px/1 Georgia, serif; color: var(--ink-2); background: transparent; border: 1px solid var(--muted);
}
button.info:hover { color: var(--ink); border-color: var(--ink); }
.chart .title button.info { margin-left: 6px; vertical-align: 1px; width: 18px; height: 18px; font-size: 11px; }
#help {
  position: fixed; z-index: 20; background: var(--surface); color: var(--ink); border: 1px solid var(--muted);
  border-radius: 10px; padding: 12px 14px; box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5); font-size: 13px; line-height: 1.45;
}
#help h4 { margin: 0 0 8px; font-size: 14px; }
#help .help-k { color: var(--muted); font-size: 11px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; }
#help p { margin: 2px 0 10px; color: var(--ink-2); }
#help p:last-child { margin-bottom: 0; }

/* Phones: video on top, panel underneath, controls pinned to the bottom. */
@media (max-width: 900px) {
  #swingView { height: auto; min-height: 100dvh; font-size: 15px; }
  #swingView header { padding: 8px 10px; gap: 8px; }
  #swingView header > label { flex: 1 1 100%; display: flex; align-items: center; gap: 8px; min-width: 0; }
  #swingView header > label select { flex: 1; min-width: 0; width: 0; }
  .toggles { margin-left: 0; flex-wrap: wrap; gap: 6px 14px; font-size: 13px; }
  .toggles input { width: 18px; height: 18px; vertical-align: -3px; }
  main { grid-template-columns: 1fr; }
  #stages { height: 58dvh; padding: 6px; }
  aside { border-left: 0; border-top: 1px solid var(--border); overflow: visible; padding: 10px 12px 16px; }
  footer {
    position: sticky; bottom: 0; z-index: 5; display: grid; gap: 6px;
    grid-template-columns: repeat(3, minmax(0, 1fr)) auto; padding: 8px 10px calc(8px + env(safe-area-inset-bottom));
  }
  footer .phases { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(4, 1fr); }
  footer button { white-space: nowrap; padding: 6px 4px; }
  footer label { display: flex; font-size: 0; }  /* hide the "Speed" word, keep the select */
  footer label select { font-size: 15px; }
  #swingView select, #swingView button, #swingView .button { min-height: 40px; padding: 6px 10px; }
  #frameInfo { display: none; }
  .stat-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  #swingView button.info { width: 26px; height: 26px; min-height: 0; padding: 0; }  /* bigger tap target */
}
.chart canvas { touch-action: none; }  /* drag-to-scrub instead of scrolling the page */
.button {
  background: var(--page); color: var(--ink); border: 1px solid var(--border);
  border-radius: 6px; padding: 5px 10px; cursor: pointer;
}
.button:hover { border-color: var(--muted); }
a { color: var(--series-a); text-decoration: none; }
.back { white-space: nowrap; }
button.link { background: none; border: 0; color: var(--series-a); padding: 0; }
.error, .failed { color: #e66767; }
.hint { color: var(--muted); font-size: 13px; }

/* List and session pages */
.page { max-width: 960px; margin: 0 auto; padding: 16px; }
.bar { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; margin-bottom: 8px; }
.bar h1 { margin: 0; flex: 1; font-size: 20px; }
.button.primary { background: var(--series-a); border-color: var(--series-a); color: #fff; display: inline-block; }
.uploadbox { margin: 8px 0 20px; }
.uploadrow { display: flex; gap: 10px; align-items: center; font-size: 13px; color: var(--ink-2); margin-top: 6px; }
.uploadrow progress { flex: 1; max-width: 240px; }
h2 { font-size: 13px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.06em; margin: 22px 0 8px; }
.card {
  display: flex; align-items: center; gap: 10px; padding: 12px 14px; margin-bottom: 8px; color: var(--ink);
  background: var(--surface); border: 1px solid var(--border); border-radius: 8px;
}
.card:hover { border-color: var(--muted); }
.card .grow { flex: 1; min-width: 0; }
.card .sub { color: var(--muted); font-size: 12px; }
.badge { font-size: 11px; padding: 2px 8px; border-radius: 99px; border: 1px solid var(--border); color: var(--ink-2); white-space: nowrap; }
.badge.shared { color: #3ddc84; border-color: #3ddc84; }
.badge.busy { color: #ffd23f; border-color: #ffd23f; }
.controls { display: flex; gap: 16px; align-items: center; flex-wrap: wrap; margin: 4px 0 12px; }
.controls .hint { flex-basis: 100%; margin: 0; }
button.danger { color: #e66767; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 12px; }
.tile { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; overflow: hidden; display: flex; flex-direction: column; }
.tile .thumb { max-height: 260px; overflow: hidden; background: #000; display: block; position: relative; }
.tile .thumb img { width: 400%; height: auto; display: block; }  /* keyframes.png is four positions side by side; show the first */
.tile .thumb .badge { position: absolute; top: 8px; left: 8px; background: rgba(0, 0, 0, 0.7); }
.tile .body { padding: 8px 10px; display: flex; flex-direction: column; gap: 6px; }
.tile .row { display: flex; gap: 8px; align-items: center; justify-content: space-between; font-size: 13px; }
.settings { margin-top: 28px; }
.settings label { display: block; margin-top: 8px; }
.settings input { width: 80px; background: var(--page); color: var(--ink); border: 1px solid var(--border); border-radius: 6px; padding: 4px 8px; font: inherit; }
#loginView { text-align: center; padding-top: 18vh; }
#swingOwnerControls { display: flex; gap: 12px; align-items: center; }
.settings h3 { font-size: 14px; margin: 16px 0 4px; }
.keyshown { margin: 8px 0; }
.keyshown code { font-size: 12px; word-break: break-all; background: var(--page); padding: 4px 6px; border-radius: 4px; }
.keylist { padding-left: 18px; color: var(--ink-2); font-size: 13px; }