/* hikari — 共通スタイル: 暗闇に発光する */
@import url('https://fonts.googleapis.com/css2?family=Shippori+Mincho:wght@400;500;600&family=Zen+Kaku+Gothic+New:wght@300;400;500&display=swap');

:root {
  --ink: #0a0a0f;
  --glow-white: #f4f2ec;
  --glow-gold: #ffd98a;
  --glow-cyan: #8ce8ff;
  --glow-pink: #ffaad4;
  --glow-violet: #c9a8ff;
  --dim: rgba(244, 242, 236, 0.45);
  --dimmer: rgba(244, 242, 236, 0.25);
  --serif: 'Shippori Mincho', serif;
  --sans: 'Zen Kaku Gothic New', sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html, body {
  height: 100%;
  background: var(--ink);
  color: var(--glow-white);
  font-family: var(--sans);
  overflow: hidden;
}

canvas.stage {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
}

/* ---- デモ共通HUD ---- */
.hud-top {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: 22px 26px;
  pointer-events: none;
  z-index: 10;
}

.hud-title-block { pointer-events: auto; }

.hud-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--dim);
  text-decoration: none;
  font-size: 12px;
  letter-spacing: 0.18em;
  margin-bottom: 10px;
  transition: color 0.3s;
}
.hud-back:hover { color: var(--glow-white); }

.hud-no {
  font-family: var(--serif);
  font-size: 13px;
  letter-spacing: 0.3em;
  color: var(--dimmer);
  margin-bottom: 4px;
}

.hud-title {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 26px;
  letter-spacing: 0.14em;
  text-shadow: 0 0 24px rgba(244, 242, 236, 0.35);
}

.hud-bottom {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 26px;
  pointer-events: none;
  z-index: 10;
}

.hud-hint {
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--dim);
  line-height: 1.8;
}

.hud-tech {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
}

.tech-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.tech-label {
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--dimmer);
}

.tech-tag {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--dim);
  border: 1px solid rgba(244, 242, 236, 0.18);
  border-radius: 999px;
  padding: 3px 12px;
  white-space: nowrap;
}

.tech-tag.primary {
  color: var(--glow-gold);
  border-color: rgba(255, 217, 138, 0.4);
}

/* アクションボタン（マイク許可など） */
.action-btn {
  pointer-events: auto;
  font-family: var(--sans);
  font-size: 13px;
  letter-spacing: 0.15em;
  color: var(--glow-white);
  background: rgba(244, 242, 236, 0.06);
  border: 1px solid rgba(244, 242, 236, 0.3);
  border-radius: 999px;
  padding: 10px 22px;
  cursor: pointer;
  transition: background 0.3s, box-shadow 0.3s;
}
.action-btn:hover {
  background: rgba(244, 242, 236, 0.14);
  box-shadow: 0 0 24px rgba(244, 242, 236, 0.2);
}

/* ---- 狭幅対応（スマホ縦）。デスクトップ(>640px)は不変 ----
   fixed横並びの hud-bottom が hud-hint を縦1文字組に圧搾する問題への共通対策。 */
@media (max-width: 640px) {
  .hud-top { padding: 18px 20px; }
  .hud-title { font-size: 20px; }
  .hud-bottom {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    padding: 14px 20px 16px;
  }
  .hud-hint { font-size: 11.5px; line-height: 1.7; }
  .hud-tech { align-items: flex-start; gap: 5px; }
  .tech-row { flex-wrap: wrap; row-gap: 4px; }
  .tech-label { white-space: nowrap; }
}