:root {
  --ink: #d8e2f0;
  --dim: #6f7f96;
  --accent: #ffb35c;
  --panel: rgba(8, 11, 18, 0.66);
  --line: rgba(180, 205, 240, 0.16);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: #04060b;
  color: var(--ink);
  font: 12px/1.5 ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

#stage {
  display: block;
  width: 100vw;
  height: 100vh;
  touch-action: none;
  cursor: crosshair;
}

/* display:grid が hidden属性のUA display:none に勝ってしまうため、明示的に打ち消す */
#fatal[hidden] { display: none; }

#fatal {
  position: fixed;
  inset: 0;
  display: grid;
  place-content: center;
  gap: 12px;
  padding: 40px;
  background: #04060b;
  text-align: center;
  font-size: 14px;
  line-height: 2;
  z-index: 99;
}
#fatal b { color: var(--accent); font-size: 18px; }
#fatal code { color: var(--dim); font-size: 11px; }

/* 左上: タイトルと計測値 */
#hud {
  position: fixed;
  top: 16px;
  left: 18px;
  pointer-events: none;
  user-select: none;
}
#hud-title {
  font-size: 13px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--ink);
  text-shadow: 0 0 18px rgba(0, 0, 0, 0.9);
}
#hud-stat {
  margin-top: 4px;
  color: var(--dim);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
}
#hud-stat .sep { padding: 0 6px; opacity: 0.4; }
#fps { color: var(--accent); }

/* v5: フォーカス状態は3状態を常時表示(HERO LOCK / TRACKING / FREE) */
#track[hidden] { display: none; }
#track {
  margin-top: 7px;
  display: inline-block;
  padding: 2px 8px;
  border: 1px solid rgba(120, 240, 255, 0.55);
  border-radius: 3px;
  color: #8ff0ff;
  font-size: 10px;
  letter-spacing: 0.16em;
  font-variant-numeric: tabular-nums;
  background: rgba(8, 30, 40, 0.55);
}
#track[data-mode="hero"] {
  border-color: rgba(255, 122, 96, 0.55);
  color: #ffb59c;
  background: rgba(44, 16, 10, 0.55);
}
#track[data-mode="track"] { animation: trackpulse 1.6s ease-in-out infinite; }
#track[data-mode="free"] {
  border-color: rgba(180, 205, 240, 0.35);
  color: var(--dim);
  background: rgba(10, 14, 22, 0.55);
}
@keyframes trackpulse {
  0%, 100% { opacity: 0.62; }
  50% { opacity: 1; }
}

/* C7: 一時停止(クリップ撮影用の静止確認) */
#pause[hidden] { display: none; }
#pause {
  margin-top: 7px;
  display: inline-block;
  padding: 2px 8px;
  border: 1px solid rgba(255, 179, 92, 0.6);
  border-radius: 3px;
  color: var(--accent);
  font-size: 10px;
  letter-spacing: 0.22em;
  background: rgba(40, 24, 8, 0.55);
}

#hint {
  position: fixed;
  top: 16px;
  right: 18px;
  color: var(--dim);
  font-size: 11px;
  pointer-events: none;
  user-select: none;
  text-shadow: 0 0 18px rgba(0, 0, 0, 0.9);
}
#hint b { color: var(--ink); font-weight: 400; }

/* フォーカス送りのレティクル */
#reticle {
  position: fixed;
  width: 40px;
  height: 40px;
  margin: -20px 0 0 -20px;
  border: 1px solid var(--accent);
  border-radius: 50%;
  pointer-events: none;
  opacity: 0;
  transform: scale(1.7);
  transition: opacity 0.45s ease, transform 0.45s cubic-bezier(0.2, 0.9, 0.3, 1);
}
#reticle.on { opacity: 0.85; transform: scale(1); }
/* 追いピン中は被写体を指したまま残す(QA P1-R1-A12)。
   **transition を切る**: 追尾レティクルは毎フレーム位置が変わるので補間されると尾を引くうえ、
   ペインが hidden の検修環境では遷移が進まず computed opacity が 0 のままになる(実測) */
#reticle.track { opacity: 0.55; transform: scale(1); transition: none; }

/* 下部の操作卓 */
#panel {
  position: fixed;
  left: 50%;
  bottom: 20px;
  transform: translateX(-50%);
  width: min(620px, calc(100vw - 36px));
  padding: 12px 16px 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel);
  backdrop-filter: blur(14px) saturate(1.2);
  display: grid;
  gap: 7px;
}

.row {
  display: grid;
  grid-template-columns: 62px 1fr 78px;
  align-items: center;
  gap: 12px;
}
.row label {
  color: var(--dim);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 10px;
}
.row output {
  text-align: right;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
}
.row.meta {
  grid-template-columns: 1fr;
  border-top: 1px solid var(--line);
  padding-top: 7px;
  margin-top: 1px;
}
.row.meta span {
  color: var(--dim);
  font-size: 10.5px;
  letter-spacing: 0.05em;
  font-variant-numeric: tabular-nums;
}

input[type=range] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 18px;
  background: transparent;
  cursor: ew-resize;
}
input[type=range]::-webkit-slider-runnable-track {
  height: 2px;
  background: rgba(180, 205, 240, 0.22);
  border-radius: 2px;
}
input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px;
  height: 12px;
  margin-top: -5px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px rgba(255, 179, 92, 0.55);
}
input[type=range]::-moz-range-track {
  height: 2px;
  background: rgba(180, 205, 240, 0.22);
}
input[type=range]::-moz-range-thumb {
  width: 12px;
  height: 12px;
  border: 0;
  border-radius: 50%;
  background: var(--accent);
}