/* ==========================================================
   分数レーサー — fraction-racer.css   v2.0.0
   すべてのセレクタを .fr-root でスコープ化
   （偶数奇数レーサー v2.0.0 のUIデザインに合わせて刷新。
    ルール・判定・レベル定義・問題セットJSON機能に変更はありません）
   ========================================================== */
.fr-root {
  --fr-good: #2ecc71;
  --fr-bad:  #ff5a4f;
  --fr-gold: #ffcf3a;
  --fr-blue: #2f6bff;
  --fr-max: #1f9e57;  /* 大きい方色 */
  --fr-min: #e07b1a;  /* 小さい方色 */

  position: relative;
  width: 100%;
  height: min(100vw * 9 / 16, 92vh);
  max-width: 960px;
  margin: 0 auto;
  overflow: hidden;
  background: #0c1326;
  font-family: "M PLUS Rounded 1c", "Hiragino Maru Gothic ProN", "BIZ UDPGothic", system-ui, sans-serif;
  color: #fff;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  box-sizing: border-box;
  border-radius: 14px;
  box-shadow: 0 20px 60px rgba(0,0,0,.5);
}
.fr-root *, .fr-root *::before, .fr-root *::after { box-sizing: border-box; margin: 0; padding: 0; }

.fr-canvas { display: block; width: 100%; height: 100%; }

/* ---------- HUD（修正: ガラス調パネルに刷新） ---------- */
.fr-hud {
  position: absolute; top: 0; left: 0; right: 0;
  padding: 10px 12px;
  display: flex; align-items: center; gap: 8px;
  pointer-events: none;
  font-weight: 800;
}
.fr-hud.hidden { display: none !important; }
.fr-hud-pill {
  background: linear-gradient(180deg, rgba(30,44,86,.72), rgba(12,18,40,.72));
  border: 1px solid rgba(160,190,255,.35);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border-radius: 14px;
  padding: 5px 12px 6px;
  display: flex; flex-direction: column;
  line-height: 1.1; min-width: 58px;
  box-shadow: 0 4px 14px rgba(0,0,0,.35), inset 0 1px 0 rgba(255,255,255,.18);
}
.fr-hud-pill small { font-size: 11px; font-weight: 700; color: #a9bde6; letter-spacing: .08em; }
.fr-hud-pill b     { font-size: 21px; font-variant-numeric: tabular-nums; }
.fr-quest {
  flex: 1; text-align: center;
  font-size: clamp(18px, 4.4vw, 30px);
  text-shadow: 0 2px 6px rgba(0,0,0,.8);
}
.fr-quest-word {
  font-weight: 900;
  display: inline-block;
  padding: 2px 16px 4px;
  margin-right: 4px;
  border-radius: 999px;
  background: rgba(0,0,0,.35);
  border: 2px solid rgba(255,255,255,.55);
}
.fr-word-max { background: linear-gradient(180deg, #37d17e, #148a4a); color: #fff; box-shadow: 0 0 18px rgba(46,204,113,.75); }
.fr-word-min { background: linear-gradient(180deg, #ffa546, #d9660c); color: #fff; box-shadow: 0 0 18px rgba(255,152,0,.75); }
.fr-lives b { font-size: 18px; color: #ff6b81; letter-spacing: 1px; }
.fr-quit {
  pointer-events: auto;
  border: 1px solid rgba(160,190,255,.35);
  border-radius: 999px;
  background: rgba(12,18,40,.72);
  color: #dfe7f7;
  font-size: 13px; font-weight: 800;
  padding: 9px 14px;
  cursor: pointer; font-family: inherit;
}
.fr-quit:active { background: rgba(60,72,110,.9); }

/* ---------- コンボ・判定・レベルアップ ---------- */
.fr-combo {
  position: absolute; top: 72px; left: 50%;
  transform: translateX(-50%);
  font-size: 34px; font-weight: 900;
  color: var(--fr-gold); opacity: 0;
  text-shadow: 0 3px 0 #a86f00, 0 0 18px rgba(255,207,58,.85);
  pointer-events: none; white-space: nowrap;
}
.fr-level-toast {
  position: absolute; top: 28%; left: 50%;
  transform: translateX(-50%);
  font-size: clamp(24px, 6vw, 42px); font-weight: 900;
  color: #bff0ff; opacity: 0;
  text-shadow: 0 3px 0 #1a5f8a, 0 0 24px rgba(120,210,255,.95);
  pointer-events: none; white-space: nowrap;
}
.fr-judge {
  position: absolute; top: 40%; left: 50%;
  transform: translate(-50%, -50%) scale(1);
  font-size: 96px; font-weight: 900;
  opacity: 0; pointer-events: none;
  text-shadow: 0 0 24px currentColor, 0 4px 0 rgba(0,0,0,.35);
}

/* ---------- 操作ボタン（修正: 立体グラデーション） ---------- */
.fr-controls {
  position: absolute; bottom: 0; left: 0; right: 0;
  padding: 14px;
  display: flex; gap: 14px; justify-content: space-between;
  pointer-events: none;
}
.fr-controls.hidden { display: none !important; }
.fr-ctrl-btn {
  pointer-events: auto;
  width: 92px; height: 92px;
  border: 3px solid rgba(255,255,255,.55);
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #7fb0ff 0%, #2f6bff 45%, #1a3fa8 100%);
  color: #fff; font-size: 40px; font-weight: 900;
  box-shadow: 0 6px 0 #14307e, 0 10px 22px rgba(0,0,0,.45), inset 0 2px 0 rgba(255,255,255,.35);
  cursor: pointer;
  transition: transform .06s, box-shadow .06s;
  opacity: .92;
  font-family: inherit;
}
.fr-ctrl-btn:active { transform: translateY(4px); box-shadow: 0 2px 0 #14307e, 0 4px 10px rgba(0,0,0,.4); }

/* ---------- 画面共通（修正: 背景の走行デモが見えるよう暗幕を下寄せグラデに） ---------- */
.fr-screen {
  position: absolute; inset: 0;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 14px; padding: 20px;
  background: linear-gradient(180deg, rgba(6,10,26,.30) 0%, rgba(6,10,26,.45) 55%, rgba(6,10,26,.15) 100%);
  text-align: center;
}
.fr-screen.hidden { display: none !important; }

.fr-game-title {
  font-size: clamp(34px, 8vw, 62px);
  font-weight: 900; line-height: 1.12;
  color: #fff;
  text-shadow: 0 4px 0 #1d2f6b, 0 8px 18px rgba(0,0,0,.55), 0 0 30px rgba(120,170,255,.55);
  display: flex; flex-direction: column;
  letter-spacing: .02em;
}
.fr-game-title small {
  font-size: clamp(12px, 2.4vw, 16px);
  letter-spacing: .45em;
  color: var(--fr-gold);
  font-weight: 800;
  text-shadow: 0 2px 4px rgba(0,0,0,.7);
  margin-top: 4px;
}
.fr-road-divider {
  width: min(320px, 70%); height: 6px; border-radius: 3px;
  background: repeating-linear-gradient(90deg, #ffcf3a 0 26px, transparent 26px 44px);
  opacity: .95;
}
.fr-lead {
  font-size: clamp(14px, 3.2vw, 19px);
  line-height: 1.8; font-weight: 700;
  color: #eef3ff;
  text-shadow: 0 2px 6px rgba(0,0,0,.85);
  background: rgba(8,14,34,.45);
  border-radius: 16px;
  padding: 8px 18px;
}

.fr-big-btn {
  border: none; border-radius: 999px;
  padding: 15px 58px;
  font-size: clamp(19px, 4.4vw, 25px); font-weight: 900;
  color: #1b2340;
  background: linear-gradient(180deg, #fff1a8 0%, #ffcf3a 55%, #f0a800 100%);
  box-shadow: 0 6px 0 #a86f00, 0 12px 24px rgba(0,0,0,.45), inset 0 2px 0 rgba(255,255,255,.7);
  cursor: pointer; font-family: inherit;
  transition: transform .06s, box-shadow .06s;
}
.fr-big-btn:active { transform: translateY(4px); box-shadow: 0 2px 0 #a86f00; }
.fr-sub-btn {
  border: 2px solid rgba(255,255,255,.55);
  border-radius: 999px;
  padding: 8px 30px;
  font-size: 15px; font-weight: 800;
  color: #fff;
  background: rgba(8,14,34,.55);
  cursor: pointer; font-family: inherit;
}
.fr-sub-btn:active { background: rgba(255,255,255,.2); }

.fr-mode-grid { display: flex; gap: 16px; flex-wrap: wrap; justify-content: center; }
.fr-mode-card {
  width: min(240px, 42vw);
  padding: 20px 14px;
  border-radius: 20px;
  background: linear-gradient(180deg, rgba(36,52,104,.92), rgba(16,24,52,.92));
  border: 2px solid rgba(150,180,240,.45);
  box-shadow: 0 10px 24px rgba(0,0,0,.4), inset 0 1px 0 rgba(255,255,255,.18);
  cursor: pointer;
  transition: transform .1s, border-color .1s;
}
.fr-mode-card:hover, .fr-mode-card:active { transform: translateY(-3px); border-color: var(--fr-gold); }
.fr-mc-title { font-size: clamp(20px, 4.6vw, 26px); font-weight: 900; color: var(--fr-gold); margin-bottom: 8px; }
.fr-mc-desc  { font-size: clamp(12px, 2.8vw, 14px); line-height: 1.7; font-weight: 700; color: #d6def0; }

.fr-panel {
  background: linear-gradient(180deg, rgba(36,52,104,.9), rgba(16,24,52,.9));
  border: 2px solid rgba(150,180,240,.45);
  border-radius: 20px; padding: 18px;
  max-width: min(560px, 92%);
  box-shadow: 0 10px 24px rgba(0,0,0,.4);
}
.fr-parity-grid { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; }
.fr-opt {
  min-width: 128px; padding: 16px 14px;
  border-radius: 16px;
  background: rgba(45,58,100,.9);
  border: 2px solid rgba(150,180,240,.35);
  font-size: clamp(17px, 4vw, 21px); font-weight: 900;
  cursor: pointer;
  display: flex; flex-direction: column; gap: 4px;
  transition: transform .08s, border-color .08s, background .08s;
}
.fr-opt small { font-size: 12px; font-weight: 700; color: #c3cfe8; }
.fr-opt.sel { background: var(--fr-blue); border-color: #fff; transform: scale(1.05); box-shadow: 0 0 18px rgba(255,255,255,.35); }
.fr-opt.sel small { color: #fff; }
.fr-opt-max.sel { background: linear-gradient(180deg, #37d17e, #148a4a); }
.fr-opt-min.sel { background: linear-gradient(180deg, #ffa546, #d9660c); }

.fr-stage-no    { font-size: clamp(18px, 4.4vw, 24px); font-weight: 900; letter-spacing: .2em; color: #b5d0ff; text-shadow: 0 2px 6px rgba(0,0,0,.8); }
.fr-stage-quest { font-size: clamp(26px, 6.6vw, 44px); font-weight: 900; color: var(--fr-gold); text-shadow: 0 3px 0 rgba(120,80,0,.8), 0 0 18px rgba(0,0,0,.6); }
.fr-stage-meta  { font-size: clamp(13px, 3.2vw, 17px); font-weight: 800; color: #e3eaf8; text-shadow: 0 2px 6px rgba(0,0,0,.85); }

.fr-result-score {
  font-size: clamp(44px, 11vw, 78px); font-weight: 900;
  color: var(--fr-gold);
  text-shadow: 0 4px 0 #a86f00, 0 0 24px rgba(255,207,58,.6);
  line-height: 1;
}
.fr-result-line { font-size: clamp(14px, 3.4vw, 18px); font-weight: 800; color: #eef3ff; text-shadow: 0 2px 6px rgba(0,0,0,.85); }
.fr-best        { font-size: clamp(13px, 3vw, 16px); font-weight: 800; color: #aee8ff; text-shadow: 0 2px 6px rgba(0,0,0,.85); }

@media (max-width: 560px) {
  .fr-ctrl-btn { width: 72px; height: 72px; font-size: 32px; }
  .fr-hud-pill { min-width: 46px; padding: 4px 8px; }
  .fr-hud-pill b { font-size: 16px; }
  .fr-hud { gap: 5px; padding: 8px; }
  .fr-quest-word { padding: 1px 10px 3px; }
  .fr-quest { white-space: nowrap; font-size: 17px; }
  .fr-quest-suffix { display: none; } /* 修正: 狭い画面ではお題ワードだけ表示 */
}