:root {
  --bg-0: #030711;
  --bg-1: #0d1731;
  --ink: #e8f0ff;
  --muted: #9cb0d8;
  --panel: rgba(11, 18, 34, 0.76);
  --line: rgba(170, 200, 255, 0.32);
  --accent: #6fd5ff;
  --ok: #64f2aa;
  --warn: #f6c15a;
  --error: #ff7474;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--ink);
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  overflow: hidden;
  background: radial-gradient(circle at 20% 10%, #1a2e5f 0%, var(--bg-0) 48%, #02040a 100%);
}

#app-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: radial-gradient(circle at 70% 20%, rgba(119, 192, 255, 0.15), transparent 35%),
    radial-gradient(circle at 20% 80%, rgba(104, 255, 219, 0.08), transparent 30%);
  z-index: 0;
}

#title-wrap {
  position: absolute;
  top: 14px;
  left: 20px;
  z-index: 12;
}

h1 {
  margin: 0;
  font-size: clamp(1.2rem, 3vw, 2rem);
  letter-spacing: 0.14em;
  font-weight: 800;
}

#subtitle {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

#scene-root {
  position: fixed;
  inset: 0;
  z-index: 1;
}

#control-panel {
  position: absolute;
  top: 14px;
  right: 14px;
  z-index: 15;
  width: min(360px, calc(100vw - 24px));
  padding: 12px;
  border-radius: 14px;
  background: var(--panel);
  border: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.row {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 10px;
  align-items: center;
  margin-bottom: 9px;
}

.checkbox-row {
  grid-template-columns: 100px auto;
}

label {
  color: var(--muted);
  font-size: 0.85rem;
}

select,
button,
input[type="range"] {
  width: 100%;
}

select,
button {
  color: var(--ink);
  background: rgba(7, 12, 24, 0.9);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px;
}

input[type="checkbox"] {
  width: 18px;
  height: 18px;
}

.buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 10px;
}

button:disabled { opacity: 0.5; }

#reset-btn {
  border-color: rgba(172, 214, 255, 0.45);
}

#status-pill {
  margin-top: 4px;
  display: inline-block;
  border-radius: 999px;
  padding: 4px 10px;
  border: 1px solid var(--line);
  font-size: 0.8rem;
}

#status-pill[data-state="idle"] { color: var(--muted); }
#status-pill[data-state="starting"] { color: var(--warn); }
#status-pill[data-state="running"] { color: var(--ok); }
#status-pill[data-state="searching"] { color: #fbbf24; }
#status-pill[data-state="lost"] { color: #f97316; }
#status-pill[data-state="error"] { color: var(--error); }

#status-message {
  margin: 8px 0;
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.35;
}

#sync-status,
#quality-status,
#location-status,
#hand-status,
#pinch-status,
#pin-status,
#focus-status,
#rejection-status {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 0.8rem;
}

#sync-status[data-sync="syncing"] { color: var(--warn); }
#sync-status[data-sync="synced"] { color: var(--ok); }
#sync-status[data-sync="backend-online"] { color: var(--ok); }
#sync-status[data-sync="backend-unreachable"] { color: var(--error); }
#sync-status[data-sync="offline-fallback"] { color: #f97316; }
#location-status[data-location="verified"] { color: var(--ok); }
#location-status[data-location="review"] { color: var(--warn); }
#location-status[data-location="blocked"] { color: var(--error); }
#location-status[data-location="error"] { color: var(--error); }
#hand-status[data-hand="locked"] { color: var(--ok); }
#hand-status[data-hand="searching"] { color: var(--warn); }
#hand-status[data-hand="lost"] { color: #f97316; }
#pinch-status[data-pinch="active"] { color: var(--ok); }
#pinch-status[data-pinch="inactive"] { color: var(--muted); }
#pin-status[data-pin="verified"] { color: var(--ok); }
#pin-status[data-pin="review"] { color: var(--warn); }
#pin-status[data-pin="blocked"] { color: var(--error); }
#focus-status[data-focus="ok"] { color: var(--ok); }
#focus-status[data-focus="no_pin"] { color: var(--muted); }
#focus-status[data-focus="transform_mismatch"] { color: var(--error); }

.debug-line {
  display: none;
}

body[data-debug="1"] .debug-line {
  display: block;
}

details {
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.84rem;
}

details ul {
  margin: 8px 0 0;
  padding-left: 16px;
}

#fps {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 0.84rem;
}

#video-wrap {
  position: absolute;
  left: 14px;
  bottom: 14px;
  width: min(330px, 40vw);
  aspect-ratio: 4/3;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--line);
  z-index: 14;
  background: #000;
  transform: scaleX(-1);
}

#input-video,
#overlay-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

#input-video { object-fit: cover; opacity: 0.78; }

.modal {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(0, 0, 0, 0.58);
  z-index: 30;
}

.modal.hidden {
  display: none;
}

.modal-card {
  width: min(520px, calc(100vw - 26px));
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(9, 15, 28, 0.94);
  padding: 14px;
}

.modal-card h2 {
  margin: 0 0 8px;
  font-size: 1.05rem;
}

.modal-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.4;
}

.modal-buttons {
  margin-top: 14px;
}

.ghost-btn {
  margin-top: 8px;
  background: transparent;
}

@media (max-width: 900px) {
  #control-panel {
    left: 10px;
    right: 10px;
    top: auto;
    bottom: 10px;
    width: auto;
  }

  #video-wrap {
    width: min(44vw, 220px);
    left: 10px;
    bottom: 300px;
  }
}