:root {
  --bg: #14171c;
  --panel: #1d222a;
  --panel2: #242b35;
  --border: #333c49;
  --text: #dbe2ec;
  --dim: #8b96a5;
  --accent: #4f9cf7;
  --yellow: #e7c545;
  --teal: #35c4b5;
  --green: #4bd66a;
  --red: #e05555;
  --radius: 10px;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 14px/1.45 system-ui, -apple-system, "Segoe UI", sans-serif;
}
header {
  display: flex; align-items: center; gap: 24px;
  padding: 10px 20px; background: var(--panel);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 50;
}
h1 { font-size: 17px; margin: 0; white-space: nowrap; }
h2 { font-size: 14px; margin: 4px 0 10px; color: #b8c4d4; text-transform: uppercase; letter-spacing: .05em; }
nav#tabs { display: flex; gap: 6px; }
.tab {
  background: none; border: 1px solid transparent; color: var(--dim);
  padding: 7px 14px; border-radius: 8px; cursor: pointer; font-size: 14px;
}
.tab:hover { color: var(--text); }
.tab.active { background: var(--panel2); color: var(--text); border-color: var(--border); }
.boot {
  margin-left: auto; font-size: 12px; color: var(--dim);
  border: 1px solid var(--border); border-radius: 999px; padding: 3px 12px;
  white-space: nowrap;
}
.boot.ready { color: var(--green); border-color: var(--green); }
.boot.error { color: var(--red); border-color: var(--red); }

.tabpane { display: none; padding: 16px 20px; max-width: 1500px; margin: 0 auto; }
.tabpane.active { display: block; }

.panel {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 14px 16px; margin-bottom: 16px;
}
.setup-grid { display: grid; grid-template-columns: 360px 1fr; gap: 16px; align-items: start; }
@media (max-width: 1000px) { .setup-grid { grid-template-columns: 1fr; } }

label { display: block; margin-bottom: 10px; color: var(--dim); font-size: 12.5px; }
input, select {
  display: block; width: 100%; margin-top: 3px;
  background: var(--panel2); color: var(--text);
  border: 1px solid var(--border); border-radius: 6px; padding: 7px 9px; font-size: 14px;
}
input:focus, select:focus { outline: none; border-color: var(--accent); }
.row { display: flex; gap: 10px; }
.row .grow { flex: 1; }
.hint { color: var(--dim); font-size: 12px; margin: 6px 0 12px; }
kbd { background: var(--panel2); border: 1px solid var(--border); border-radius: 4px; padding: 1px 5px; font-size: 11px; }
.dim { color: var(--dim); }
.small { font-size: 12px; text-transform: none; letter-spacing: 0; }

/* camera info */
.info-table { font-size: 13px; }
.info-table table { border-collapse: collapse; width: 100%; }
.info-table td { padding: 3px 6px 3px 0; vertical-align: top; }
.info-table td:first-child { color: var(--dim); white-space: nowrap; width: 40%; }
.badge { display: inline-block; padding: 1px 8px; border-radius: 999px; font-size: 11.5px; border: 1px solid; }
.badge.ok { color: var(--green); border-color: var(--green); }
.badge.no { color: var(--dim); border-color: var(--border); }
.badge.warn { color: var(--yellow); border-color: var(--yellow); }

/* live view */
.viewer { min-width: 0; }
.live-wrap {
  position: relative; width: min(640px, 100%); aspect-ratio: 16/9;
  background: #000; border-radius: 8px; overflow: hidden;
  border: 3px solid var(--border); transition: border-color .2s;
}
.live-wrap.collecting { border-color: var(--yellow); box-shadow: 0 0 14px rgba(231,197,69,.35); }
.live-wrap video { width: 100%; height: 100%; object-fit: contain; display: block; }
.live-msg {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  color: var(--dim); background: #0009; font-size: 15px; text-align: center;
}
.live-msg.hidden, .hidden { display: none !important; }
.countdown {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  font-size: 90px; font-weight: 700; color: var(--yellow); text-shadow: 0 0 18px #000;
  background: #0005;
}
.flash { position: absolute; inset: 0; background: #fff; opacity: 0; pointer-events: none; }
.flash.on { animation: flashAnim .35s ease-out; }
@keyframes flashAnim { 0% { opacity: .85; } 100% { opacity: 0; } }
.shot-badge {
  position: absolute; top: 8px; right: 8px; padding: 4px 10px; border-radius: 6px;
  background: #000a; font-size: 13px; font-weight: 600;
}
.shot-badge.good { color: var(--green); }
.shot-badge.bad { color: var(--red); }

/* collect bar */
.collect-bar { display: flex; align-items: center; gap: 12px; margin: 12px 0 4px; flex-wrap: wrap; }
.btn {
  background: var(--panel2); color: var(--text); border: 1px solid var(--border);
  border-radius: 8px; padding: 9px 14px; font-size: 14px; cursor: pointer;
}
.btn:hover:not(:disabled) { border-color: var(--accent); }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn.primary { background: #2a5a9c; border-color: #3a6fb8; }
.btn.primary.stop { background: #8a6d1d; border-color: var(--yellow); }
.btn.success { background: #1f6b38; border-color: #2c8c4b; }
.btn.danger-outline { border-color: #7a3333; color: #e08a8a; }
.btn.danger-outline:hover:not(:disabled) { border-color: var(--red); color: var(--red); }
.btn.small { padding: 5px 10px; font-size: 13px; }
.btn kbd { margin-left: 4px; }

.collect-status { display: flex; align-items: center; gap: 8px; font-size: 14px; }
.light {
  width: 14px; height: 14px; border-radius: 50%; background: #3a4250;
  display: inline-block; transition: background .3s, box-shadow .3s;
}
.light.yellow { background: var(--yellow); box-shadow: 0 0 8px var(--yellow); }
.light.teal { background: var(--teal); box-shadow: 0 0 8px var(--teal); }
.light.green { background: var(--green); box-shadow: 0 0 8px var(--green); }
.dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; }
.dot.yellow { background: var(--yellow); } .dot.teal { background: var(--teal); } .dot.green { background: var(--green); }

/* thumbnails */
.thumb-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 8px; margin-top: 12px; max-width: 1100px;
}
.thumb {
  position: relative; border-radius: 6px; overflow: hidden; background: #000;
  border: 1px solid var(--border); aspect-ratio: 4/3;
}
.thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.thumb .mark {
  position: absolute; top: 3px; left: 5px; font-size: 12px; font-weight: 700;
  text-shadow: 0 0 4px #000, 0 0 4px #000;
}
.thumb .mark.ok { color: var(--green); } .thumb .mark.no { color: var(--red); }
.thumb .err-label {
  position: absolute; bottom: 2px; left: 4px; font-size: 11px; color: #fff;
  text-shadow: 0 0 4px #000, 0 0 4px #000;
}
.thumb .acts {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  gap: 10px; background: #0007; opacity: 0; transition: opacity .15s;
}
.thumb:hover .acts { opacity: 1; }
.thumb .acts button {
  background: #222c; border: 1px solid #666; color: #fff; border-radius: 6px;
  width: 38px; height: 34px; font-size: 16px; cursor: pointer;
}
.thumb .acts button:hover { border-color: #fff; }

/* results tab */
.progress-grid { display: grid; grid-template-columns: 420px 1fr; gap: 16px; align-items: start; }
@media (max-width: 1000px) { .progress-grid { grid-template-columns: 1fr; } }
.steps { list-style: none; margin: 0; padding: 0; }
.steps li { display: flex; gap: 10px; padding: 7px 0; border-bottom: 1px solid #2a313c; align-items: baseline; }
.steps .st-icon { width: 20px; text-align: center; }
.steps .st-detail { margin-left: auto; color: var(--dim); font-size: 12px; text-align: right; }
.steps li.active .st-icon { animation: spin 1s linear infinite; display: inline-block; }
@keyframes spin { to { transform: rotate(360deg); } }
.log {
  background: #10131a; border: 1px solid var(--border); border-radius: 6px;
  padding: 10px; height: 260px; overflow-y: auto; font-size: 12px; margin: 0;
  white-space: pre-wrap;
}
.result-card {
  margin-top: 14px; background: var(--panel2); border: 1px solid var(--border);
  border-radius: 8px; padding: 12px; font-size: 13px;
}
.result-card .rms { font-size: 22px; font-weight: 700; }
.result-card .rms.good { color: var(--green); }
.result-card .rms.okay { color: var(--yellow); }
.result-card .rms.poor { color: var(--red); }
.result-card code { background: #10131a; padding: 1px 5px; border-radius: 4px; font-size: 12px; }

.prune-row { display: flex; gap: 10px; align-items: end; margin-top: 10px; flex-wrap: wrap; }
.prune-row label { margin: 0; }
.prune-row input { width: 90px; }

.err-chart { font-size: 12px; }
.err-row { display: grid; grid-template-columns: 220px 1fr 60px; gap: 8px; align-items: center; padding: 2px 0; }
.err-row .bar-track { display: block; position: relative; background: #10131a; border-radius: 4px; height: 14px; }
.err-row .bar { display: block; height: 100%; border-radius: 4px; background: var(--green); min-width: 2px; }
.err-row .bar.okay { background: var(--yellow); }
.err-row .bar.poor { background: var(--red); }
.err-row .fname { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--dim); }
.err-row .guide { position: absolute; top: -2px; bottom: -2px; border-left: 1px dashed rgba(219,226,236,.28); z-index: 1; }
.err-row .guide.g05 { left: 16.667%; }
.err-row .guide.g10 { left: 33.333%; border-left-color: rgba(224,85,85,.45); }
.err-row.axis { padding: 0 0 4px; }
.err-row .axis-track { display: block; position: relative; height: 14px; font-size: 10.5px; color: var(--dim); }
.err-row .axis-track .ax { position: absolute; top: 0; transform: translateX(-50%); }
.err-row .axis-track .al { left: 0; transform: none; }
.err-row .axis-track .a05 { left: 16.667%; }
.err-row .axis-track .a10 { left: 33.333%; }
.err-row .axis-track .ar { right: 0; }

.artifact-row { display: flex; gap: 14px; flex-wrap: wrap; }
.artifact-row figure { margin: 0; }
.artifact-row canvas { border-radius: 6px; border: 1px solid var(--border); max-width: 100%; }
.artifact-row figcaption { font-size: 12px; color: var(--dim); margin-bottom: 4px; }

/* measure tab */
.cal-source { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-bottom: 12px; }
.live-controls { display: flex; gap: 14px; align-items: center; margin-bottom: 10px; flex-wrap: wrap; }
.live-controls label { display: flex; align-items: center; gap: 6px; margin: 0; white-space: nowrap; }
.live-controls input, .live-controls select { width: 90px; margin: 0; }
.mb-label { color: #b8c4d4; font-size: 13px; }
.dual-view { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 900px) { .dual-view { grid-template-columns: 1fr; } }
.dual-view figure { margin: 0; }
.dual-view figcaption { font-size: 12.5px; color: var(--dim); margin-bottom: 4px; }
.feed-box {
  position: relative; width: 100%; aspect-ratio: 16/9; background: #000;
  border: 1px solid var(--border); border-radius: 8px; overflow: hidden; margin-bottom: 6px;
}
.feed-box video, .feed-box canvas {
  width: 100%; height: 100%; object-fit: contain; display: block;
}

.rect-thumbs { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 12px; }
.rect-thumb {
  cursor: pointer; text-align: center; border: 2px solid transparent;
  border-radius: 8px; padding: 5px; background: var(--panel2); max-width: 210px;
}
.rect-thumb:hover { border-color: var(--border); }
.rect-thumb.sel { border-color: var(--accent); }
.rect-thumb canvas { display: block; border-radius: 4px; max-width: 190px; }
.rect-thumb .cap { font-size: 12px; color: var(--dim); margin-top: 4px; }
.rect-thumb .warn { font-size: 11px; color: var(--yellow); margin-top: 2px; max-width: 190px; }

.snap-toolbar { display: flex; gap: 8px; align-items: center; margin-bottom: 10px; flex-wrap: wrap; }
.snap-toolbar .btn.active-mode { border-color: var(--yellow); color: var(--yellow); }
.measure-hint { color: var(--yellow); font-size: 13px; }
.snap-wrap { position: relative; width: fit-content; max-width: 100%; }
.snap-wrap canvas#snapImg, .snap-wrap canvas.base { max-width: 100%; display: block; border-radius: 6px; border: 1px solid var(--border); }
.snap-wrap canvas#snapCanvas, .snap-wrap canvas.overlay { position: absolute; inset: 0; width: 100%; height: 100%; }
.snap-wrap.measuring canvas#snapCanvas, .snap-wrap.measuring canvas.overlay { cursor: crosshair; }
.measure-list { margin-top: 8px; font-size: 13px; color: var(--dim); }
.measure-list b { color: var(--yellow); }

/* lightbox */
.lightbox {
  position: fixed; inset: 0; background: #000d; z-index: 100;
  display: flex; align-items: center; justify-content: center;
}
.lightbox img { max-width: 96vw; max-height: 96vh; }
.lightbox button {
  position: absolute; top: 14px; right: 18px; background: #222; color: #fff;
  border: 1px solid #555; border-radius: 8px; width: 42px; height: 42px;
  font-size: 18px; cursor: pointer; z-index: 101;
}

.toast {
  position: fixed; bottom: 22px; left: 50%; transform: translateX(-50%);
  background: var(--panel2); border: 1px solid var(--accent); color: var(--text);
  padding: 10px 18px; border-radius: 8px; z-index: 120; font-size: 14px;
  box-shadow: 0 4px 18px #0008;
}
.toast.error { border-color: var(--red); }