:root {
  --bg: #0a0a0f;
  --panel: #14141c;
  --panel-2: #1c1c26;
  --line: #2a2a38;
  --ink: #f0f0f5;
  --ink-dim: #9a9aae;
  --accent: #5eead4;
  --warn: #fbbf24;
  --bad: #f87171;
  --gutter: 16px;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

html, body {
  margin: 0; padding: 0; height: 100%;
  background: var(--bg); color: var(--ink);
  font: 15px/1.5 ui-sans-serif, -apple-system, "Segoe UI", Roboto, sans-serif;
  overscroll-behavior: none;
}

.screen { position: fixed; inset: 0; }
.hidden { display: none !important; }

/* ---------- launch ---------- */
#launch {
  display: flex; flex-direction: column; gap: 22px;
  padding: max(28px, env(safe-area-inset-top)) var(--gutter) max(20px, env(safe-area-inset-bottom));
  overflow-y: auto;
}
.masthead h1 { margin: 0 0 4px; font-size: 26px; letter-spacing: -0.02em; font-weight: 650; }
.masthead .sub { margin: 0; color: var(--ink-dim); font-size: 14px; }

.modes { display: flex; flex-direction: column; gap: 12px; }

.mode-card {
  display: grid;
  grid-template-columns: 40px 1fr;
  grid-template-areas: "icon body" "state state";
  gap: 4px 14px;
  align-items: start;
  width: 100%;
  padding: 16px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  color: inherit; font: inherit; text-align: left;
  cursor: pointer;
  transition: border-color .15s, background .15s, opacity .15s;
}
.mode-card:not([disabled]):active { background: var(--panel-2); border-color: var(--accent); }
.mode-card[disabled] { opacity: .5; cursor: not-allowed; }

.mode-icon { grid-area: icon; font-size: 26px; line-height: 1; color: var(--accent); }
.mode-body { grid-area: body; display: flex; flex-direction: column; gap: 3px; }
.mode-name { font-size: 17px; font-weight: 600; }
.mode-desc { font-size: 13px; color: var(--ink-dim); }

.mode-state {
  grid-area: state; margin-top: 10px; padding-top: 10px;
  border-top: 1px solid var(--line);
  font-size: 12px; font-variant-numeric: tabular-nums; color: var(--ink-dim);
}
.mode-state.ok   { color: var(--accent); }
.mode-state.warn { color: var(--warn); }
.mode-state.bad  { color: var(--bad); }

/* ---------- probe ---------- */
.probe {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: 12px; padding: 12px 14px;
}
.probe summary { cursor: pointer; font-size: 13px; color: var(--ink-dim); }
.probe ul { list-style: none; margin: 12px 0 2px; padding: 0; font-size: 12.5px; }
.probe li {
  display: flex; justify-content: space-between; gap: 12px;
  padding: 5px 0; border-top: 1px solid var(--line);
  font-variant-numeric: tabular-nums;
}
.probe li:first-child { border-top: 0; }
.probe .k { color: var(--ink-dim); }
.probe .v { text-align: right; }
.probe .v.ok   { color: var(--accent); }
.probe .v.warn { color: var(--warn); }
.probe .v.bad  { color: var(--bad); }

.safety { margin: auto 0 0; font-size: 12px; color: var(--warn); text-align: center; }

/* ---------- stage ---------- */
#stage { background: #000; }

/* dom-overlay root — transparent by contract (see index.html). pointer-events
   are off so taps fall through to the AR session for placement; only the
   actual controls take input back. */
#ar-overlay { position: absolute; inset: 0; background: transparent; pointer-events: none; }
#ar-overlay .ctl, #ar-overlay .toast { pointer-events: auto; }
#feed, #gl { position: absolute; inset: 0; width: 100%; height: 100%; }
#feed { object-fit: cover; }
#gl { touch-action: none; }
#feed.hidden { display: none; }

.stage-controls {
  position: absolute; left: 0; right: 0;
  bottom: max(18px, env(safe-area-inset-bottom));
  display: flex; justify-content: center; gap: 14px;
  padding: 0 var(--gutter);
}
.ctl {
  width: 52px; height: 52px; border-radius: 50%;
  background: rgba(20,20,28,.72); border: 1px solid rgba(255,255,255,.16);
  color: var(--ink); font-size: 20px; line-height: 1;
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  cursor: pointer;
}
.ctl:active { background: rgba(94,234,212,.22); }
.ctl[aria-pressed="true"] {
  background: rgba(251,191,36,.9);
  border-color: rgba(251,191,36,1);
  color: #1a1400;
}

.hud {
  position: absolute; top: max(14px, env(safe-area-inset-top)); left: var(--gutter);
  padding: 10px 12px; border-radius: 10px;
  background: rgba(10,10,15,.68); border: 1px solid rgba(255,255,255,.12);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  font-size: 11.5px; font-variant-numeric: tabular-nums;
  min-width: 132px; pointer-events: none;
}
.hud-row { display: flex; justify-content: space-between; gap: 14px; padding: 2px 0; }
.hud-k { color: var(--ink-dim); }
.hud-v { color: var(--accent); }

.hint {
  position: absolute; left: 50%; transform: translateX(-50%);
  bottom: calc(max(18px, env(safe-area-inset-bottom)) + 70px);
  padding: 9px 16px; border-radius: 999px;
  background: rgba(10,10,15,.72); border: 1px solid rgba(255,255,255,.14);
  font-size: 13px; white-space: nowrap; pointer-events: none;
}

.toast {
  position: absolute; left: var(--gutter); right: var(--gutter);
  top: 50%; transform: translateY(-50%);
  padding: 18px; border-radius: 14px; text-align: center;
  background: rgba(20,20,28,.94); border: 1px solid var(--line);
  font-size: 14px; line-height: 1.55;
}
.toast .t-title { display: block; font-weight: 600; margin-bottom: 6px; color: var(--warn); }

/* ---------- boot ---------- */
.boot {
  position: fixed; inset: 0; z-index: 50;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 16px;
  background: rgba(10,10,15,.92); font-size: 13px; color: var(--ink-dim);
}
.spinner {
  width: 30px; height: 30px; border-radius: 50%;
  border: 2px solid var(--line); border-top-color: var(--accent);
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

@media (prefers-reduced-motion: reduce) { .spinner { animation-duration: 2.4s; } }