/* ===== ベース ===== */
:root {
  --bg: #0c0c0e;
  --surface: #16161a;
  --surface-hover: #1e1e24;
  --accent: #cabb67;
  --accent-hover: #d4c97a;
  --text: #e8e8ec;
  --text-muted: #8b8f98;
  --text-subtitle: #eaeaea;
  --border: #27272c;
  --progress-bg: #1e1e24;
  --card-bg: #26262a;
  --card-border: #3a3a3f;
  --card-border-hover: #4a4a50;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 2px 12px rgba(0, 0, 0, 0.35);
  --shadow-hover: 0 8px 28px rgba(0, 0, 0, 0.4);
  --safe-top: env(safe-area-inset-top);
  --safe-bottom: env(safe-area-inset-bottom);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Outfit", -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  padding: var(--safe-top) 20px var(--safe-bottom);
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 720px;
  margin: 0 auto;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding: 40px 0 28px;
}

/* ===== ランキング表示時はヘッダー・対戦を完全非表示 ===== */
body.view-result #header,
body.view-result #battle {
  display: none !important;
}

/* ===== 曲データが0件のとき ===== */
.no-songs-message {
  margin: 0;
  padding: 24px 16px;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.95rem;
}
body.has-no-songs .battle .progress-wrap,
body.has-no-songs .battle .vs-cards {
  display: none !important;
}

/* ===== ヘッダー ===== */
.header {
  text-align: center;
  margin-bottom: 40px;
}

.header h1 {
  font-size: clamp(1.4rem, 4.5vw, 1.65rem);
  font-weight: 700;
  margin: 0 0 16px;
  letter-spacing: -0.03em;
  line-height: 1.3;
  color: var(--text);
}

.subtitle {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--text-subtitle);
  max-width: 32em;
  margin-left: auto;
  margin-right: auto;
}

.subtitle-note {
  display: block;
  margin-top: 0.75em;
  font-size: 0.75rem;
  color: var(--text-subtitle);
}

/* ===== ROUND 表示 ===== */
.progress-wrap {
  margin-bottom: 28px;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.progress-bar {
  width: 75%;
  max-width: 320px;
  height: 7px;
  background: var(--progress-bg);
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 10px;
}

.progress-fill {
  height: 100%;
  width: 0%;
  background: var(--accent);
  border-radius: 999px;
  transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.progress-text {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  text-align: center;
  letter-spacing: 0.08em;
}

/* ===== VS カード（スマホでタップしやすい大きさ） ===== */
.battle {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-bottom: 40px;
}

/* バトル画面：スマホのみコンテンツ高さに合わせて余白をなくす。PCはフッターを画面下に固定 */
@media (max-width: 640px) {
  body:not(.view-result) .container {
    min-height: auto;
  }
  body:not(.view-result) .footer {
    margin-top: 0;
  }
}

.vs-cards {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 12px;
  width: 100%;
  flex-wrap: wrap;
}

.vs-card-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  align-self: flex-start;
  flex: 1 1 140px;
  max-width: 280px;
}

.vs-card-item .card {
  width: 100%;
  max-width: 100%;
}

/* ボタン＋Spotifyをひとまとまりに */
.card-block {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  width: 100%;
  max-width: 280px;
  border: 1.5px solid var(--card-border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--card-bg);
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.card-block:hover {
  border-color: var(--card-border-hover);
  box-shadow: var(--shadow-hover);
}

.card-block .card {
  flex: 0 0 auto;
  min-height: 76px;
  padding: 14px 18px;
  border: none;
  border-radius: 0;
  box-shadow: none;
}

.card-block .card:hover {
  box-shadow: none;
}

/* 曲名が主役だとわかるよう、視聴エリアを線で区切る */
.battle-preview-row {
  border-top: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.15);
}

.battle-toggle-preview {
  display: block;
  width: 100%;
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  background: none;
  border: none;
  padding: 10px 12px;
  cursor: pointer;
  letter-spacing: 0.03em;
  text-align: center;
  box-sizing: border-box;
  text-decoration: none;
}

.battle-toggle-preview:hover,
.battle-toggle-preview:focus,
.battle-toggle-preview:active {
  color: var(--text-muted);
  text-decoration: none;
}

.battle-toggle-preview::after {
  margin-left: 2px;
  font-size: 0.7em;
  vertical-align: 0.05em;
}

.battle-toggle-preview[aria-expanded="false"]::after {
  content: " ▼";
}

.battle-toggle-preview[aria-expanded="true"]::after {
  content: " ▲";
}

.battle-spotify {
  margin-top: 0;
  width: 100%;
  max-width: none;
  border-radius: 0;
  border-top: 1px solid var(--border);
  overflow: hidden;
  min-height: 0;
  background: var(--surface);
}

.battle-spotify--closed {
  display: none;
}

.battle-spotify--open {
  display: block;
}

.battle-spotify object,
.battle-spotify iframe {
  display: block;
  border: none;
}

/* PC: トグルなしでSpotifyを常に表示・曲名エリアを大きく */
@media (min-width: 641px) {
  .battle-preview-row {
    display: none !important;
  }
  .card-block .battle-spotify.battle-spotify--closed:not([hidden]) {
    display: block !important;
  }
  .card-block .card {
    min-height: 152px;
    padding: 24px 18px;
  }
}

.card {
  flex: 1 1 140px;
  min-height: 72px;
  max-width: 100%;
  padding: 12px 18px;
  font-family: inherit;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
  background: var(--card-bg);
  border: 1.5px solid var(--card-border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: transform 0.2s ease, border-color 0.25s ease, box-shadow 0.25s ease, background 0.2s ease;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  word-break: break-all;
  letter-spacing: 0.01em;
}

.card:hover {
  transform: translateY(-2px);
  border-color: var(--card-border-hover);
  box-shadow: var(--shadow-hover);
}

.card:active {
  transform: translateY(0);
}

.card-left,
.card-right {
  background: var(--card-bg);
}

.card-left:hover,
.card-right:hover {
  background: #2e2e32;
}

.vs-badge {
  flex-shrink: 0;
  align-self: center;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  padding: 0 8px;
  letter-spacing: 0.15em;
}

/* スマホ: カードを縦に並べてタップ領域を大きく */
@media (max-width: 480px) {
  .vs-cards {
    flex-direction: column;
    gap: 16px;
  }

  .vs-card-item {
    width: 100%;
    max-width: none;
    flex: 0 0 auto;
  }

  .card-block {
    max-width: none;
    width: 100%;
  }

  .card {
    min-height: 72px;
    width: 100%;
    max-width: none;
    padding: 20px 20px;
    font-size: 1.15rem;
  }

  .vs-badge {
    margin: 4px 0;
  }
}

/* ===== 結果 ===== */
.result {
  text-align: center;
  animation: fadeIn 0.45s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 結果表示時はバトル画面と同じくフッター手前に余白を確保 */
body.view-result .result {
  flex: 1;
  padding-bottom: 28px;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.result h2 {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0 0 24px;
  letter-spacing: -0.02em;
}

.ranking-wrap {
  overflow-x: auto;
  margin-bottom: 20px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
}

.ranking-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  text-align: left;
}

.ranking-table th,
.ranking-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
}

.ranking-table thead th {
  background: rgba(0, 0, 0, 0.2);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 0.03em;
  white-space: nowrap;
}

.ranking-table thead th:first-child {
  min-width: 5em;
  width: 5em;
  text-align: left;
  text-transform: uppercase;
}

.ranking-table tbody tr:last-child td {
  border-bottom: none;
}

.ranking-table tbody tr {
  transition: background 0.15s ease;
}

.ranking-table tbody tr:hover {
  background: var(--surface-hover);
}

.ranking-table .col-rank {
  width: 5em;
  min-width: 5em;
  font-weight: 600;
  color: var(--text);
}

.ranking-table .col-name {
  font-weight: 500;
}

.ranking-table .col-video-head {
  width: 2.5rem;
  padding: 14px 8px;
}

.ranking-table .col-video {
  width: 2.5rem;
  padding: 14px 8px;
  text-align: center;
  vertical-align: middle;
}

.ranking-yt-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: color 0.2s ease, transform 0.2s ease;
}

.ranking-yt-link:hover {
  color: var(--text);
  transform: scale(1.1);
}

.ranking-yt-icon {
  width: 1.4rem;
  height: 1.4rem;
}

.ranking-more-wrap {
  margin: 0 0 20px;
  text-align: center;
}

.ranking-more-link {
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--accent);
  cursor: pointer;
  text-decoration: none;
  transition: color 0.2s ease;
  -webkit-tap-highlight-color: transparent;
}

.ranking-more-link:hover {
  color: var(--accent-hover);
}

.result-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  align-items: center;
  margin-top: 24px;
}

.btn-share,
.btn-reset {
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-sm);
  padding: 12px 24px;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  letter-spacing: 0.02em;
}

.btn-share {
  color: var(--accent);
  background: transparent;
  border: 1px solid var(--accent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn-share-icon {
  width: 1.1em;
  height: 1.1em;
  flex-shrink: 0;
  color: #fff;
}

.btn-share:hover .btn-share-icon {
  color: #fff;
}

.btn-share:hover {
  background: rgba(202, 187, 103, 0.12);
  border-color: var(--accent-hover);
  color: var(--accent-hover);
  transform: translateY(-1px);
}

.btn-share:active {
  transform: translateY(0);
}

.btn-reset {
  color: #1a1a1a;
  background: var(--accent);
}

.btn-reset:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

.btn-reset:active {
  transform: translateY(0);
}

/* ===== フッター・更新履歴 ===== */
.footer {
  margin-top: auto;
  padding-top: 28px;
  padding-bottom: 24px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-subtitle);
  border-top: 1px solid var(--border);
}

.footer-contact {
  margin: 0;
  line-height: 1.6;
}

.footer a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer a:hover {
  color: var(--accent-hover);
}

.last-update {
  margin: 18px 0 0;
  font-size: 0.8rem;
  color: var(--text-subtitle);
  line-height: 1.5;
}

.last-update time {
  margin-right: 4px;
}