/*
 * demo.css — Turnstone quality demo.
 *
 * Camera-first on a phone, two-column on a desktop. The layout lessons are
 * carried over from Plumb rather than relearned: the control tray is fixed and
 * can never scroll away, and every viewport below the two-column breakpoint
 * uses the fixed layout so a phone in landscape does not become a scrolling
 * document.
 */

:root {
  --bg: #0d1117;
  --panel: #161b22;
  --panel-2: #1c2230;
  --line: #30363d;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #00e5ff;
  --ok: #3fb950;
  --warn: #d29922;
  --danger: #ff4d6d;
  --topbar-h: 46px;
  --tray-h: 72px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}
html, body { max-width: 100%; overflow-x: hidden; }

/* ---------------------------------------------------------------- topbar */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 14px;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}
.brand strong { font-size: 16px; letter-spacing: .2px; }
.brand .sub { color: var(--muted); margin-left: 10px; font-size: 12.5px; }
.topbar-right { display: flex; align-items: center; gap: 8px; min-width: 0; }

.badge {
  font: 600 12px/1 ui-monospace, Consolas, monospace;
  padding: 7px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  white-space: nowrap;
}
.badge-insufficient { color: var(--danger); border-color: var(--danger); }
.badge-indicative   { color: var(--warn);   border-color: var(--warn); }
.badge-study        { color: var(--accent); border-color: var(--accent); }
.badge-reference    { color: var(--ok);     border-color: var(--ok); }

/* ------------------------------------------------------------------ main */
main {
  display: grid;
  grid-template-columns: 1fr 380px;
  grid-template-rows: 1fr auto;
  gap: 12px;
  padding: 12px;
  height: calc(100vh - var(--topbar-h));
  height: calc(100dvh - var(--topbar-h));
}
.stage-wrap { grid-column: 1; grid-row: 1; display: flex; flex-direction: column; min-width: 0; }
.tray { grid-column: 1; grid-row: 2; }
.panel { grid-column: 2; grid-row: 1 / span 2; }

.stage {
  position: relative;
  flex: 1;
  min-height: 300px;
  background: #05080c;
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.stage video, .stage canvas {
  position: absolute;
  inset: 0;
  margin: auto;
  max-width: 100%;
  max-height: 100%;
  display: block;
}
.stage video { object-fit: contain; }
.hidden { display: none !important; }

.dial { pointer-events: none; }

.instruction {
  position: absolute;
  left: 50%;
  bottom: 16px;
  transform: translateX(-50%);
  max-width: min(92%, 460px);
  padding: 10px 18px;
  border-radius: 999px;
  background: rgba(5, 8, 12, .86);
  border: 1px solid var(--accent);
  color: var(--text);
  font: 600 13.5px/1.35 -apple-system, system-ui, sans-serif;
  text-align: center;
  backdrop-filter: blur(6px);
}
.instruction.is-ok { border-color: var(--ok); }
.instruction.is-blocking { border-color: var(--danger); }

.empty {
  position: relative;
  max-width: 460px;
  padding: 24px;
  color: var(--muted);
}
.empty h2 { color: var(--text); font-size: 17px; margin: 0 0 12px; }
.empty p { margin: 8px 0; }
.empty .muted { font-size: 13px; opacity: .85; margin-top: 16px; }

/* ------------------------------------------------------------------ tray */
.tray {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel);
}
.tray-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  min-width: 60px;
  padding: 6px 8px;
  border: 1px solid transparent;
  border-radius: 9px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font: 600 10.5px/1 -apple-system, system-ui, sans-serif;
}
.tray-ico { font-size: 18px; line-height: 1; }
.tray-btn:disabled { opacity: .35; cursor: not-allowed; }
.tray-btn.is-on { color: var(--accent); border-color: var(--accent); }
.tray-btn:active:not(:disabled) { background: rgba(255, 255, 255, .07); }

.shutter {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  border: 4px solid #0d1117;
  outline: 2px solid rgba(255, 255, 255, .5);
  background: rgba(255, 255, 255, .92);
  cursor: pointer;
  flex: 0 0 auto;
  transition: transform .1s ease, background .2s ease;
}
.shutter:active:not(:disabled) { transform: scale(.93); }
.shutter:disabled { opacity: .4; cursor: not-allowed; }

/* ----------------------------------------------------------------- panel */
.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow-y: auto;
  min-height: 0;
  padding: 14px;
}
.panel h3 {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--muted);
  margin: 18px 0 8px;
}
.hint { color: var(--muted); font-size: 12.5px; margin: 0 0 12px; }

.summary {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  background: rgba(0, 0, 0, .2);
}
.summary-row {
  display: grid;
  grid-template-columns: 7.5em 1fr;
  gap: 8px;
  align-items: baseline;
  font: 600 13px/1.8 ui-monospace, Consolas, monospace;
}
.summary-row .k { color: var(--muted); font-weight: 500; }
.summary-row b { font-variant-numeric: tabular-nums; }
.summary-row .unit { color: var(--muted); font-weight: 400; font-size: 11.5px; }
.summary-note { color: var(--muted); font-size: 12px; margin: 10px 0 0; }

.dims { display: flex; flex-direction: column; gap: 6px; }
.dim {
  border: 1px solid var(--line);
  border-left-width: 3px;
  border-radius: 6px;
  padding: 8px 10px;
  background: rgba(0, 0, 0, .15);
}
.dim-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
  font: 600 12.5px/1.4 -apple-system, system-ui, sans-serif;
}
.dim-val {
  font: 600 11.5px/1.4 ui-monospace, Consolas, monospace;
  font-variant-numeric: tabular-nums;
  color: var(--muted);
}
.dim-bar { height: 4px; border-radius: 2px; background: var(--panel-2); margin-top: 6px; overflow: hidden; }
.dim-bar span { display: block; height: 100%; border-radius: 2px; transition: width .25s ease; }
.dim-why { color: var(--muted); font-size: 11.5px; margin-top: 6px; display: none; }
.dim.is-limiting .dim-why { display: block; }

.dim.state-ok        { border-left-color: var(--ok); }
.dim.state-attention { border-left-color: var(--warn); }
.dim.state-blocking  { border-left-color: var(--danger); }
.dim.state-unknown   { border-left-color: var(--muted); }
.dim.state-deferred  { border-left-color: var(--muted); opacity: .72; }
.dim.is-limiting     { background: rgba(0, 229, 255, .07); border-color: var(--accent); }

.dim-tag {
  font: 600 9.5px/1 ui-monospace, monospace;
  text-transform: uppercase;
  letter-spacing: .06em;
  padding: 3px 6px;
  border-radius: 4px;
  border: 1px solid var(--line);
  color: var(--muted);
}

details { border: 1px solid var(--line); border-radius: 8px; margin-top: 16px; }
summary { padding: 10px 12px; cursor: pointer; font-weight: 600; font-size: 13px; }
.pad { padding: 0 12px 12px; }
.pad p { color: var(--muted); font-size: 12.5px; }
code { background: var(--panel-2); padding: 1px 5px; border-radius: 4px; font-size: 11.5px; }

.foot { color: var(--muted); font-size: 11.5px; margin-top: 16px; }
.foot a { color: var(--accent); }
.build { font-family: ui-monospace, Consolas, monospace; opacity: .7; }

.toast {
  position: fixed;
  left: 50%;
  bottom: calc(var(--tray-h) + 20px);
  transform: translateX(-50%);
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 16px;
  font-size: 13px;
  z-index: 50;
  max-width: 90vw;
}

/*
 * Camera-first below the two-column breakpoint, and on any short viewport.
 * A phone in landscape is ~844x390 — not narrow, emphatically a phone, and a
 * capture tool has no business becoming a scrolling document on rotation.
 */
@media (max-width: 900px), (max-height: 560px) {
  .brand .sub { display: none; }

  main {
    display: block;
    padding: 0;
    height: auto;
  }
  .stage-wrap, .tray, .panel { grid-column: auto; grid-row: auto; }

  .stage-wrap {
    position: fixed;
    top: var(--topbar-h);
    left: 0;
    right: 0;
    bottom: var(--tray-h);
    gap: 0;
    /*
     * Stays BELOW the panel and the tray. This element creates a stacking
     * context, so anything nested inside it is trapped at this level — which is
     * why the tray is a sibling rather than a child.
     */
    z-index: 1;
  }
  .stage { border-radius: 0; border-left: 0; border-right: 0; }

  .tray {
    position: fixed;
    left: 0; right: 0; bottom: 0;
    z-index: 20;
    gap: 6px;
    justify-content: space-around;
    border-radius: 0;
    border-left: 0; border-right: 0; border-bottom: 0;
    padding: 6px 4px calc(6px + env(safe-area-inset-bottom, 0px));
  }
  .shutter { width: 54px; height: 54px; }
  .tray-btn { min-width: 52px; padding: 4px 2px; }

  /* The panel slides up from above the tray, so the shutter is never covered. */
  .panel {
    position: fixed;
    left: 0; right: 0;
    bottom: var(--tray-h);
    z-index: 10;
    height: calc(100dvh - var(--topbar-h) - var(--tray-h) - 12px);
    max-height: 78vh;
    border-radius: 16px 16px 0 0;
    border-left: 0; border-right: 0; border-bottom: 0;
    box-shadow: 0 -6px 24px rgba(0, 0, 0, .55);
    transform: translateY(calc(100% - 128px));
    transition: transform .28s cubic-bezier(.32, .72, 0, 1);
  }
  .panel.is-open { transform: translateY(0); }
  .panel::before {
    content: "";
    display: block;
    width: 40px; height: 4px;
    border-radius: 999px;
    background: var(--muted);
    opacity: .55;
    margin: -4px auto 10px;
  }
}