:root {
  color-scheme: light;
  --ink: #152c3b;
  --muted: #47606b;
  --surface: #fff;
  --background: #f2f5f6;
  --tint: #f4f8f8;
  --line: #d6e2e5;
  --control-line: #748f99;
  --teal: #0b6858;
  --teal-dark: #074c41;
  --teal-tint: #e6f3ed;
  --focus: #137767;
  --red: #962c36;
  --red-tint: #fff2f2;
  --radius: 14px;
  --space: clamp(14px, 2vw, 24px);
  font: 16px/1.55 "Leelawadee UI", "Noto Sans Thai", Tahoma, system-ui, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; background: var(--background); color: var(--ink); }
a { color: var(--teal-dark); }
button, select, input { font: inherit; }
button, a, input, select { touch-action: manipulation; }
button, select, input[type="range"] { cursor: pointer; }
button:disabled, select:disabled, input:disabled { cursor: not-allowed; opacity: .58; }
button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}
h1, h2, h3, p { margin: 0; }
h1 { font-size: clamp(1.6rem, 2.5vw, 2.1rem); line-height: 1.24; }
h2 { font-size: 1.12rem; line-height: 1.35; }
h3 { font-size: .98rem; line-height: 1.4; }

.skip-link {
  position: absolute;
  z-index: 10;
  top: 8px;
  left: 12px;
  transform: translateY(-200%);
  padding: 10px 14px;
  border-radius: 6px;
  background: var(--surface);
}
.skip-link:focus { transform: translateY(0); }
.topbar { background: var(--ink); color: var(--surface); }
.topbar-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px var(--space);
  max-width: 1600px;
  margin: auto;
  padding: 10px var(--space);
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 46px;
  font-weight: 750;
  text-decoration: none;
  color: var(--surface);
}
.brand small { display: block; color: #cfdee3; font-size: .78rem; font-weight: 500; }
.brand-icon {
  display: grid;
  place-items: center;
  flex: 0 0 40px;
  width: 40px;
  height: 40px;
  border: 1px solid #668485;
  border-radius: 10px;
  background: #214551;
  color: #a3e5ca;
}
.brand-icon svg { width: 24px; height: 24px; }
.nav { display: flex; gap: 4px 16px; flex-wrap: wrap; }
.nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: #e1ecef;
  font-size: .92rem;
  text-underline-offset: 4px;
  text-decoration-color: transparent;
}
.nav a:hover { text-decoration-color: currentColor; }
.nav a:focus-visible, .brand:focus-visible { outline-color: #8fe4c3; }
.environment {
  margin-left: auto;
  padding: 5px 10px;
  border: 1px solid #779a98;
  border-radius: 999px;
  color: #d8f3e8;
  font-size: .84rem;
}

.workspace { max-width: 1600px; margin: auto; padding: var(--space); }
.section-heading {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  justify-content: space-between;
  gap: 10px 18px;
  margin: 4px 0 18px;
}
.section-heading p, .panel-heading p { margin-top: 4px; color: var(--muted); }
.access {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--muted);
  font-size: .87rem;
}
.console {
  display: grid;
  grid-template-areas: "setup" "camera";
  align-items: start;
  gap: 16px;
}
.console-primary { grid-area: camera; min-width: 0; display: grid; gap: 16px; }
.controls { grid-area: setup; min-width: 0; }
.panel {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 0 2px 10px #152c3b08;
}
.panel-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px 16px;
  flex-wrap: wrap;
  padding: 14px 16px;
}
.panel-heading p { font-size: .87rem; }
.controls > .panel-heading { border-bottom: 1px solid var(--line); }
.step { display: grid; gap: 8px; padding: 14px 16px; }
.step + .step { border-top: 1px solid var(--line); }
.step h3 {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 2px;
}
.step-index {
  display: grid;
  place-items: center;
  flex: 0 0 25px;
  height: 25px;
  border-radius: 7px;
  color: var(--teal-dark);
  background: var(--teal-tint);
  font-size: .83rem;
  font-variant-numeric: tabular-nums;
}
label { font-weight: 650; }
select {
  width: 100%;
  min-width: 0;
  min-height: 44px;
  padding: 7px 30px 7px 9px;
  border: 1px solid var(--control-line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--ink);
  font-size: .92rem;
  text-overflow: ellipsis;
}
.field-pair { display: grid; grid-template-columns: minmax(78px, .75fr) minmax(0, 1.3fr); gap: 8px; }
.field { min-width: 0; }
.field label { display: block; margin-bottom: 4px; font-size: .85rem; }
.range-field { margin-top: 2px; }
.range-heading { display: flex; justify-content: space-between; align-items: baseline; gap: 6px; font-size: .85rem; }
.range-heading output { color: var(--teal-dark); font-variant-numeric: tabular-nums; font-weight: 700; }
input[type="range"] { display: block; width: 100%; height: 44px; margin: 0; accent-color: var(--teal); }
.hint { color: var(--muted); font-size: .86rem; overflow-wrap: anywhere; }
.button-row { display: flex; flex-wrap: wrap; gap: 8px; min-width: 0; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 7px 13px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-size: .93rem;
  font-weight: 700;
  text-align: center;
  text-decoration: none;
  transition: background-color .15s ease, border-color .15s ease;
}
.step .btn { flex: 1; }
.btn-primary { background: var(--teal); color: var(--surface); }
.btn-primary:hover:not(:disabled) { background: var(--teal-dark); }
.btn-secondary, .btn-stop { background: var(--surface); color: var(--ink); border-color: var(--control-line); }
.btn-secondary:hover:not(:disabled) { background: var(--tint); }
.btn-stop { color: var(--red); border-color: #b3656b; }
.btn-stop:hover:not(:disabled) { background: var(--red-tint); }
.status {
  display: flex;
  align-items: baseline;
  gap: 7px;
  color: var(--muted);
  font-size: .88rem;
  overflow-wrap: anywhere;
}
.status::before {
  content: "";
  flex: 0 0 7px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--control-line);
}
.status[data-state="running"]::before, .status[data-state="live"]::before { background: var(--teal); }
.status[data-state="error"]::before { background: var(--red); }
.round-status { padding-top: 3px; }

.metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  background: var(--line);
}
.metric {
  min-width: 0;
  padding: 10px 12px;
  background: var(--surface);
}
.metric-primary { background: var(--ink); color: var(--surface); }
.metric-title { font-size: .85rem; font-weight: 650; overflow-wrap: anywhere; }
.metric-number { display: flex; align-items: baseline; flex-wrap: wrap; gap: 0 5px; line-height: 1.2; }
.metric-number strong { font-size: clamp(1.6rem, 4vw, 2.2rem); font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.metric-number span { font-size: .83rem; }
.metric-note { margin-top: 4px; color: var(--muted); font-size: .76rem; }
.metric-primary .metric-note { color: #d4e4e9; }
.camera-stage {
  position: relative;
  display: grid;
  place-items: center;
  isolation: isolate;
  height: clamp(235px, 50vw, 480px);
  margin: 0 12px;
  overflow: hidden;
  border: 1px solid #365365;
  border-radius: 10px;
  background: #102432;
}
.camera-stage > video, .camera-stage > canvas {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
}
.camera-stage > canvas { pointer-events: none; }
.camera-stage[data-preview="hidden"] > video, .camera-stage[data-preview="hidden"] > canvas { visibility: hidden; }
.camera-placeholder {
  position: absolute;
  z-index: 1;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 14px;
  color: #d8e6ec;
  background: #102432;
  text-align: center;
}
.camera-placeholder p { font-weight: 700; }
.camera-placeholder small { font-size: .86rem; color: #c5dae2; }
.placeholder-icon {
  width: 54px;
  height: 54px;
  margin-bottom: 4px;
  padding: 7px;
  border: 1px solid #678695;
  border-radius: 12px;
  color: #a6d9cb;
  background: #183745;
}
.preview-foot {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  padding: 10px 14px 12px;
  color: var(--muted);
  font-size: .82rem;
}
.preview-foot > span { display: inline-flex; align-items: center; gap: 6px; }
.legend { display: inline-block; flex: 0 0 12px; width: 12px; }
.legend-face { height: 10px; border: 2px solid var(--teal); border-radius: 2px; }
.legend-line { height: 0; border-top: 2px dashed #8b5817; }
.notice { margin: 8px 12px 0; padding: 10px 12px; border-radius: 8px; overflow-wrap: anywhere; }
.error { background: var(--red-tint); color: var(--red); border: 1px solid #e4b4b9; }

.results, .history { margin-top: 16px; }
.age-breakdown {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0 16px 14px;
  list-style: none;
}
.age-breakdown li {
  display: flex;
  align-items: baseline;
  gap: 6px;
  min-width: 0;
  padding: 5px 9px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--tint);
  font-size: .9rem;
  overflow-wrap: anywhere;
}
.age-breakdown .empty { padding: 0; border: 0; background: transparent; color: var(--muted); }
.history > .hint { margin: 0 16px 12px; }
.history-list { display: grid; gap: 8px; margin: 0 16px 14px; min-width: 0; overflow-x: auto; }
.history-list:empty { display: none; }
.history-list table { width: 100%; border-collapse: collapse; font-size: .9rem; text-align: left; }
.history-list td, .history-list th { padding: 9px; border-bottom: 1px solid var(--line); overflow-wrap: anywhere; }
.history-list th { background: var(--tint); }
.history-list li { overflow-wrap: anywhere; }
footer { color: var(--muted); font-size: .84rem; padding: 16px 0 0; }

@media (min-width: 930px) {
  .console { grid-template-areas: "setup camera"; grid-template-columns: minmax(300px, 330px) minmax(0, 1fr); }
  .camera-stage { height: clamp(360px, 51vh, 720px); }
  .metric { padding: 11px 16px; }
}
@media (max-width: 570px) {
  .environment { display: none; }
  .topbar-inner { gap: 1px 14px; }
  .nav { width: 100%; gap: 14px; }
  .nav a { min-height: 44px; font-size: .86rem; }
  .metric { padding: 9px 7px; }
  .metric-note { font-size: .74rem; }
}
@media (max-width: 355px) {
  .field-pair { grid-template-columns: minmax(0, 1fr); }
  .metric-title { font-size: .78rem; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}