/* ==========================================================
   倍数レーサー — multiple-racer.css   v2.0.0
   すべてのセレクタを .mr-root でスコープ化
   ========================================================== */
.mr-root {
  --mr-good: #2ecc71;
  --mr-bad:  #ff5a4f;
  --mr-gold: #ffcf3a;
  --mr-blue: #2f6bff;

  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);
}
.mr-root *, .mr-root *::before, .mr-root *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

/* ---------- HUD（修正: ガラス調パネルに刷新） ---------- */
.mr-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;
}
.mr-hud.hidden { display: none !important; }
.mr-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);
}
.mr-hud-pill small { font-size: 11px; font-weight: 700; color: #a9bde6; letter-spacing: .08em; }
.mr-hud-pill b     { font-size: 21px; font-variant-numeric: tabular-nums; }
.mr-quest {
  flex: 1; text-align: center;
  font-size: clamp(16px, 4vw, 26px);
  text-shadow: 0 2px 6px rgba(0,0,0,.8);
}
.mr-quest-mult-badge {
  font-weight: 900;
  display: inline-block;
  padding: 2px 16px 4px;
  margin-right: 4px;
  border-radius: 999px;
  background: linear-gradient(180deg, #4f86ff, #1a3fa8);
  border: 2px solid rgba(255,255,255,.55);
  box-shadow: 0 0 18px rgba(47,107,255,.75);
}
.mr-quest-mult { font-size: 1.1em; }
.mr-lives b { font-size: 18px; color: #ff6b81; letter-spacing: 1px; }

/* ---------- コンボ・判定 ---------- */
.mr-combo {
  position: absolute; top: 72px; left: 50%;
  transform: translateX(-50%);
  font-size: 34px; font-weight: 900;
  color: var(--mr-gold); opacity: 0;
  text-shadow: 0 3px 0 #a86f00, 0 0 18px rgba(255,207,58,.85);
  pointer-events: none; white-space: nowrap;
}
.mr-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） ---------- */
.mr-controls {
  position: absolute; bottom: 0; left: 0; right: 0;
  padding: 14px;
  display: flex; gap: 14px; justify-content: space-between;
  pointer-events: none;
}
.mr-controls.hidden { display: none !important; }
.mr-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;
}
.mr-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） ---------- */
.mr-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;
  overflow-y: auto;
}
.mr-screen.hidden { display: none !important; }

.mr-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;
}
.mr-game-title small {
  font-size: clamp(12px, 2.4vw, 16px);
  letter-spacing: .45em;
  color: var(--mr-gold);
  font-weight: 800;
  text-shadow: 0 2px 4px rgba(0,0,0,.7);
  margin-top: 4px;
}
.mr-road-divider {
  width: min(320px, 70%); height: 6px; border-radius: 3px;
  background: repeating-linear-gradient(90deg, #ffcf3a 0 26px, transparent 26px 44px);
  opacity: .95;
}
.mr-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;
  max-width: 440px;
}

.mr-big-btn {
  pointer-events: auto;
  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;
  position: relative; overflow: hidden;
}
.mr-big-btn:active { transform: translateY(4px); box-shadow: 0 2px 0 #a86f00; }
.mr-big-btn::after {
  content: '';
  position: absolute; top: 0; left: -80%;
  width: 40%; height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255,255,255,.65), transparent);
  animation: mr-btn-shine 2.8s ease-in-out infinite;
}
@keyframes mr-btn-shine { 0%, 60% { left: -80%; } 100% { left: 130%; } }

.mr-sub-btn {
  pointer-events: auto;
  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;
}
.mr-sub-btn:active { background: rgba(255,255,255,.2); }

.mr-mode-grid { display: flex; gap: 16px; flex-wrap: wrap; justify-content: center; }
.mr-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;
}
.mr-mode-card:hover, .mr-mode-card:active { transform: translateY(-3px); border-color: var(--mr-gold); }
.mr-mc-title { font-size: clamp(20px, 4.6vw, 26px); font-weight: 900; color: var(--mr-gold); margin-bottom: 8px; }
.mr-mc-desc  { font-size: clamp(12px, 2.8vw, 14px); line-height: 1.7; font-weight: 700; color: #d6def0; }

.mr-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);
}
.mr-panel h3 {
  font-size: 14px; color: #a9bde6;
  margin-bottom: 12px; letter-spacing: .08em; font-weight: 800;
}

/* ---------- 倍数選択グリッド ---------- */
.mr-mult-grid { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; }
.mr-opt {
  min-width: 54px; padding: 14px 12px;
  border-radius: 14px;
  background: rgba(45,58,100,.9);
  border: 2px solid rgba(150,180,240,.35);
  font-size: clamp(16px, 3.6vw, 20px); font-weight: 900;
  cursor: pointer; text-align: center; color: #fff;
  box-shadow: 0 3px 0 rgba(0,0,0,.3);
  transition: transform .08s, border-color .08s, background .08s;
}
.mr-opt:active { transform: translateY(2px); box-shadow: 0 1px 0 rgba(0,0,0,.3); }
.mr-opt.sel {
  background: linear-gradient(180deg, #4f86ff, #1a3fa8);
  border-color: #fff; transform: scale(1.05);
  box-shadow: 0 0 18px rgba(47,107,255,.6);
}

.mr-stage-no    { font-size: clamp(30px, 9vw, 54px); font-weight: 900; letter-spacing: .1em; color: #fff; text-shadow: 0 4px 0 #1d2f6b, 0 8px 18px rgba(0,0,0,.55); line-height: 1; }
.mr-stage-quest { font-size: clamp(26px, 6.6vw, 44px); font-weight: 900; color: var(--mr-gold); text-shadow: 0 3px 0 rgba(120,80,0,.8), 0 0 18px rgba(0,0,0,.6); }
.mr-stage-meta  { font-size: clamp(13px, 3.2vw, 17px); font-weight: 800; color: #e3eaf8; text-shadow: 0 2px 6px rgba(0,0,0,.85); }

.mr-result-score {
  font-size: clamp(44px, 11vw, 78px); font-weight: 900;
  color: var(--mr-gold);
  text-shadow: 0 4px 0 #a86f00, 0 0 24px rgba(255,207,58,.6);
  line-height: 1;
  animation: mr-score-pop .5s cubic-bezier(.2,1.6,.4,1);
}
@keyframes mr-score-pop { from { transform: scale(.3); opacity: 0; } to { transform: scale(1); opacity: 1; } }
.mr-result-line { font-size: clamp(14px, 3.4vw, 18px); font-weight: 800; color: #eef3ff; text-shadow: 0 2px 6px rgba(0,0,0,.85); }
.mr-best        { font-size: clamp(13px, 3vw, 16px); font-weight: 800; color: #aee8ff; text-shadow: 0 2px 6px rgba(0,0,0,.85); }
.mr-win-title   { color: var(--mr-gold); }

/* ---------- 全クリア紙吹雪（変更なし） ---------- */
.mr-confetti {
  position: absolute; top: -20px;
  border-radius: 2px; pointer-events: none; z-index: 50;
  animation: mr-confetti-fall 3s linear forwards;
}
@keyframes mr-confetti-fall {
  0%   { transform: translateY(0) rotate(0deg); opacity: 1; }
  100% { transform: translateY(110vh) rotate(720deg); opacity: .6; }
}

/* ---------- ハンバーガーメニュー（従来どおり） ---------- */
.mr-root .mr-menu-btn {
  position: absolute; top: 12px; left: 12px; z-index: 5;
  width: 42px; height: 42px;
  border: 1px solid rgba(160,190,255,.35); border-radius: 50%;
  background: rgba(12,18,40,.72); color: #fff;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; transition: background .2s ease;
}
.mr-root .mr-menu-btn:hover { background: rgba(60,72,110,.9); }
.mr-root .mr-menu-btn-icon { width: 20px; height: 20px; fill: #fff; flex-shrink: 0; }
.mr-root .mr-menu-overlay {
  position: fixed; inset: 0; z-index: 1150;
  background: rgba(15, 30, 58, .45);
  opacity: 0; pointer-events: none; transition: opacity .2s ease;
}
.mr-root .mr-menu-overlay.is-open { opacity: 1; pointer-events: auto; }
.mr-root .mr-menu-drawer {
  position: fixed; z-index: 1151; top: 0; right: 0;
  width: min(380px, 90%); height: 100%; height: 100dvh;
  display: flex; flex-direction: column;
  background: #fff; border-left: 1px solid #d7e0eb;
  box-shadow: -12px 0 30px rgba(15, 30, 58, .25);
  transform: translateX(105%); transition: transform .25s ease;
  color: #24364d; text-align: left;
}
.mr-root .mr-menu-drawer.is-open { transform: translateX(0); }
.mr-root .mr-menu-header { display: flex; align-items: center; gap: 10px; min-height: 64px; padding: 12px 14px; border-bottom: 1px solid #e5eaf2; flex: 0 0 auto; }
.mr-root .mr-menu-heading { flex: 1; margin: 0; color: #1e3a5f; font-size: 18px; font-weight: 900; }
.mr-root .mr-menu-close, .mr-root .mr-menu-back {
  width: 40px; height: 40px; display: inline-flex; align-items: center; justify-content: center;
  border: 0; border-radius: 50%; background: #f3f6fa; color: #1e3a5f;
  font: inherit; font-size: 20px; cursor: pointer;
}
.mr-root .mr-menu-content { flex: 1; overflow-y: auto; padding: 14px; }
.mr-root .mr-menu-topic-list, .mr-root .mr-menu-app-list { display: grid; gap: 10px; }
.mr-root .mr-menu-topic {
  width: 100%; display: flex; align-items: center; gap: 12px;
  min-height: 58px; padding: 13px 15px;
  border: 1px solid #d7e0eb; border-radius: 16px;
  background: #fff; color: #24364d;
  font: inherit; font-size: 16px; font-weight: 700; text-align: left; cursor: pointer;
}
.mr-root .mr-menu-topic:hover { background: #f5f8fb; }
.mr-root .mr-menu-topic-name { flex: 1; }
.mr-root .mr-menu-topic-count { color: #667085; font-size: 13px; font-weight: 700; }
.mr-root .mr-menu-topic-arrow { color: #98a2b3; }
.mr-root .mr-menu-app {
  position: relative; display: block;
  padding: 14px 15px; border: 1px solid #d7e0eb; border-radius: 14px;
  background: #fff; color: #24364d; text-decoration: none !important;
  font-size: 15px; font-weight: 700; line-height: 1.5;
}
.mr-root .mr-menu-app:hover { background: #f5f8fb; }
.mr-root .mr-menu-app.is-current { padding-right: 66px; background: #eef4fb; border-color: #9db7d3; color: #1e3a5f; cursor: default; }
.mr-root .mr-menu-current-badge {
  position: absolute; top: 50%; right: 10px; transform: translateY(-50%);
  padding: 3px 7px; border-radius: 999px; background: #1e3a5f; color: #fff; font-size: 10px; font-weight: 700;
}
.mr-root .mr-menu-empty { padding: 26px 12px; color: #667085; text-align: center; font-size: 14px; }
@media (max-width: 700px) { .mr-root .mr-menu-drawer { width: min(340px, 94%); } }

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