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

html, body {
  height: 100%;
  overflow: hidden;
  background: #0b0c18;
  color: #f0f0f8;
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo", system-ui, sans-serif;
  touch-action: none;
  -webkit-user-select: none;
  user-select: none;
}

#game-wrap { position: fixed; inset: 0; }

#game-canvas {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
}

/* 一時停止ボタン(プレイ中のみ表示) */
#pause-btn {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 5;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid rgba(240, 240, 248, 0.4);
  background: rgba(20, 22, 40, 0.7);
  color: #f0f0f8;
  font-size: 0.85rem;
  cursor: pointer;
  padding: 0;
  box-shadow: none;
}

.overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 13px;
  background: rgba(11, 12, 24, 0.9);
  text-align: center;
  padding: 24px;
  z-index: 10;
  overflow-y: auto;
}

.overlay.hidden, #pause-btn.hidden { display: none; }

h1 {
  font-size: clamp(2.2rem, 8vw, 3.6rem);
  letter-spacing: 0.12em;
  background: linear-gradient(135deg, #ff5c8a, #9d7bff, #4dd2ff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

h2 {
  font-size: 1.7rem;
  letter-spacing: 0.18em;
  color: #9d7bff;
}

.sub { color: #8a8db0; font-size: 0.9rem; }

.desc { line-height: 1.85; font-size: 0.95rem; }

/* タイトル画面の操作説明カード */
.howto {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: center;
}

.howto-card {
  background: #161830;
  border: 1px solid #3a3d66;
  border-radius: 16px;
  padding: 16px 22px;
  min-width: 170px;
  line-height: 2.0;
  font-size: 0.95rem;
}

.howto-card h3 {
  color: #9d7bff;
  font-size: 1.05rem;
  margin-bottom: 6px;
  letter-spacing: 0.08em;
}

.kbd {
  display: inline-block;
  background: #2a2c48;
  border: 1px solid #52558a;
  border-bottom-width: 3px;
  border-radius: 6px;
  padding: 1px 9px;
  margin: 0 2px;
  font-weight: bold;
  font-size: 0.9rem;
}

button {
  font: inherit;
  font-size: 1.1rem;
  font-weight: bold;
  color: #fff;
  background: linear-gradient(135deg, #ff5c8a, #9d7bff);
  border: none;
  border-radius: 999px;
  padding: 13px 48px;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(157, 123, 255, 0.45);
}

button:active { transform: scale(0.96); }

button.secondary {
  background: #2a2c48;
  box-shadow: none;
  font-size: 0.92rem;
  padding: 10px 34px;
}

/* 曲選択・難易度選択リスト */
#song-list, #diff-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: min(90vw, 420px);
}

/* 曲選択: 太鼓の達人風の横ローテーション */
#song-list {
  width: min(96vw, 640px);
  gap: 14px;
  align-items: center;
}
.carousel-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
}
.carousel-arrow {
  flex: 0 0 auto;
  width: 46px;
  height: 46px;
  padding: 0;
  border-radius: 50%;
  font-size: 1.15rem;
  background: #2a2c48;
  box-shadow: none;
  display: flex;
  align-items: center;
  justify-content: center;
}
.carousel-stage {
  flex: 1 1 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-width: 0;
  /* 高さ固定だと長い曲名(2行折返し)でカードの上下枠が見切れるため、
     内容に合わせて伸ばして曲番号・タイトルへボタンを下へ押し下げる。
     overflow:hiddenは左右のはみ出し対策として維持(縦は伸びるので切れない) */
  min-height: 172px;
  padding: 8px 0;
  overflow: hidden;
}
.song-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border-radius: 16px;
  background: #1b1d36;
  border: 1px solid #3a3d66;
  text-align: center;
  cursor: pointer;
  padding: 12px;
  transition: transform 0.14s ease, background 0.14s ease, border-color 0.14s ease, opacity 0.14s ease;
}
.song-card.center {
  flex: 0 0 auto;
  width: min(62vw, 340px);
  min-height: 136px;
  background: #232650;
  border-color: #f0f0f8;
  box-shadow: 0 6px 26px rgba(157, 123, 255, 0.4);
  z-index: 2;
}
.song-card.side {
  flex: 0 0 auto;
  width: clamp(34px, 12vw, 84px);
  height: 100px;
  opacity: 0.5;
  overflow: hidden;
}
.song-card.side .s-title {
  font-size: 0.72rem;
  color: #b8bbe0;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
}
.song-card.center .s-title {
  font-size: 1.28rem;
  font-weight: bold;
  line-height: 1.3;
}
.song-card.center .s-meta {
  color: #8a8db0;
  font-size: 0.8rem;
  font-weight: normal;
}
.song-card.center .s-level {
  font-size: 0.86rem;
  font-weight: bold;
  color: #6fe3ff;
}
.song-card .s-go {
  margin-top: 3px;
  font-size: 0.82rem;
  color: #ffd75e;
  font-weight: bold;
}
.carousel-index {
  color: #8a8db0;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
}

/* タイトル: 音量スライダー */
.volume-row {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: #c8cbe0;
}
.volume-row input[type="range"] {
  width: 160px;
  accent-color: #9d7bff;
  cursor: pointer;
}
#vol-val { min-width: 2.2em; text-align: left; color: #9d7bff; font-weight: bold; }

/* CLEAR / PERFECT スタンプ */
.diff-btn { position: relative; }
.d-clear {
  flex: 0 0 auto;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  padding: 1px 7px;
  border-radius: 5px;
  white-space: nowrap;
  transform: rotate(-7deg);
}
.d-clear.clear { color: #ffe14d; border: 1.5px solid #ffe14d; }
.d-clear.perfect {
  color: #fff; border: 1.5px solid #ff8ad2;
  background: linear-gradient(90deg, rgba(255,138,210,.28), rgba(120,220,255,.28));
}
.song-card.center { position: relative; }
.card-clear {
  position: absolute;
  right: 12px;
  bottom: 9px;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  padding: 1px 7px;
  border-radius: 5px;
  white-space: nowrap;
  transform: rotate(-7deg);
  pointer-events: none;
}
.card-clear.clear { color: #ffe14d; border: 1.5px solid #ffe14d; }
.card-clear.perfect {
  color: #fff; border: 1.5px solid #ff8ad2;
  background: linear-gradient(90deg, rgba(255,138,210,.3), rgba(120,220,255,.3));
}

/* 狭い画面では左右のプレビューを隠し、中央カード＋矢印だけにする(回転はスワイプ/矢印で) */
@media (max-width: 480px) {
  .song-card.side { display: none; }
  .carousel-arrow { width: 42px; height: 42px; font-size: 1.05rem; }
  .song-card.center { width: min(70vw, 300px); }
  .carousel-stage { min-height: 160px; }
}

.song-btn, .diff-btn {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 14px 18px;
  border-radius: 14px;
  background: #1b1d36;
  border: 1px solid #3a3d66;
  box-shadow: none;
  font-size: 1rem;
  text-align: left;
  transition: transform 0.12s ease, background 0.12s ease, border-color 0.12s ease;
}

/* 選択中の項目を少し拡大して見える化 */
.song-btn:hover, .diff-btn:hover,
.song-btn.selected, .diff-btn.selected {
  transform: scale(1.06);
  background: #232650;
  border-color: #f0f0f8;
}

.song-btn .s-title { font-size: 1.05rem; }
.song-btn .s-meta, .diff-btn .d-meta {
  color: #8a8db0;
  font-size: 0.78rem;
  font-weight: normal;
  white-space: nowrap;
}

.diff-btn { border-width: 2px; }
.diff-btn.d-easy   { border-color: #4dff9d; }
.diff-btn.d-easy   .d-name { color: #4dff9d; }
.diff-btn.d-normal { border-color: #4dd2ff; }
.diff-btn.d-normal .d-name { color: #4dd2ff; }
.diff-btn.d-hard   { border-color: #ffb84d; }
.diff-btn.d-hard   .d-name { color: #ffb84d; }
.diff-btn.d-fever  { border-color: #ff5c8a; }
.diff-btn.d-fever  .d-name { color: #ff5c8a; }

#r-rank {
  font-size: 4.2rem;
  font-weight: bold;
  line-height: 1.1;
  background: linear-gradient(135deg, #ffd75e, #ff5c8a);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

#r-rank.failed {
  background: linear-gradient(135deg, #777a99, #ff5c5c);
  -webkit-background-clip: text;
  background-clip: text;
}

#r-status.failed { color: #ff5c5c; }

.r-table { border-collapse: collapse; font-size: 1.02rem; }
.r-table td { padding: 4px 18px; }
.r-table td:first-child { color: #8a8db0; text-align: left; }
.r-table td:last-child { text-align: right; font-weight: bold; }

.c-perfect { color: #ffd75e !important; }
.c-good { color: #6fe3ff !important; }
.c-miss { color: #777a99 !important; }

/* キーボードフォーカス(↑↓でえらんでEnter)。全画面共通の金色リング */
.overlay .selected { outline: 2px solid #ffd75e; outline-offset: 3px; }
.kbd-hint { font-size: 0.78rem; }

/* リザルトのSNSシェア */
.share-box {
  display: flex;
  flex-direction: column;
  gap: 7px;
  align-items: center;
}
.share-label { color: #8a8db0; font-size: 0.85rem; }
.share-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
}
.share-row button {
  font-size: 0.82rem;
  font-weight: bold;
  padding: 9px 15px;
  border-radius: 999px;
  box-shadow: none;
}
.sh-x { background: #0f1419; border: 1px solid #3a3d66; }
.sh-threads { background: #101010; border: 1px solid #3a3d66; }
.sh-line { background: #06c755; }
.sh-ig { background: linear-gradient(45deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888); }

/* シェア時のお知らせ(コピー完了など) */
#share-toast {
  position: absolute;
  bottom: 26px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(20, 22, 40, 0.96);
  border: 1px solid #9d7bff;
  border-radius: 10px;
  padding: 10px 18px;
  font-size: 0.88rem;
  z-index: 30;
  max-width: 90vw;
}
#share-toast.hidden { display: none; }