/* =========================================================
   EUROBEAT DIG - style.css
   フラットデザイン / ライト・ダークテーマ対応
   ピンク × ティール × ゴールド配色（EUROBEAT DB 参考）
   ========================================================= */

:root {
  /* ---- Light theme (default) ---- */
  --color-bg: #eef1f8;
  --color-surface: #ffffff;
  --color-surface-alt: #e6eaf5;
  --color-text: #1f2430;
  --color-text-muted: #6b7280;
  --color-border: #e2e6f0;

  --color-pink: #ec1968;
  --color-pink-dark: #c11256;
  --color-teal: #0d9c94;
  --color-gold: #eab308;

  --color-pill-teal-bg: #cdf1ea;
  --color-pill-teal-text: #0b6f68;
  --color-pill-pink-bg: #fbd7e6;
  --color-pill-pink-text: #b3175c;

  --color-icon-btn-bg: #e7eaf4;
  --color-danger: #dc2626;
  --color-overlay: rgba(17, 24, 39, 0.45);

  --radius-sm: 6px;
  --radius-md: 14px;
  --radius-pill: 999px;
}

[data-theme="dark"] {
  --color-bg: #10122a;
  --color-surface: #1b1e3d;
  --color-surface-alt: #21254a;
  --color-text: #f4f5fb;
  --color-text-muted: #a3a8c8;
  --color-border: #2c2f57;

  --color-pink: #f22a76;
  --color-pink-dark: #c11256;
  --color-teal: #22d3ee;
  --color-gold: #fbbf24;

  --color-pill-teal-bg: rgba(34, 211, 238, 0.16);
  --color-pill-teal-text: #67e8f9;
  --color-pill-pink-bg: rgba(242, 42, 118, 0.2);
  --color-pill-pink-text: #f9a8d4;

  --color-icon-btn-bg: #23264a;
  --color-danger: #f87171;
  --color-overlay: rgba(0, 0, 0, 0.65);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", "Segoe UI", sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  transition: background-color 0.2s ease, color 0.2s ease;
}

button {
  font-family: inherit;
  cursor: pointer;
}

/* =========================================================
   ヘッダー
   ========================================================= */
.app-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: var(--color-surface);
  padding: 10px 16px 0;
}

.header-row {
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: 1100px;
  margin: 0 auto;
  padding-bottom: 10px;
}

.app-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--color-text);
  margin: 0;
  white-space: nowrap;
}

.app-title-badge {
  background: var(--color-pink);
  color: #ffffff;
  font-size: 0.9rem;
  font-weight: 800;
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.03em;
}

.icon-btn {
  background: var(--color-icon-btn-bg);
  border: none;
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: 1.2rem;
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: filter 0.15s ease;
}

.icon-btn:hover {
  filter: brightness(0.94);
}

[data-theme="dark"] .icon-btn:hover {
  filter: brightness(1.2);
}

.theme-toggle-btn {
  border-radius: 50%;
}

.search-row {
  gap: 8px;
}

.search-box {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--color-icon-btn-bg);
  border-radius: var(--radius-md);
  padding: 8px 14px;
}

.search-icon {
  font-size: 0.95rem;
  opacity: 0.6;
}

.search-box input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  color: var(--color-text);
  font-size: 0.95rem;
}

.search-box input::placeholder {
  color: var(--color-text-muted);
}

.favorite-filter-btn {
  white-space: nowrap;
}

/* 3色の装飾ディバイダー */
.header-divider {
  display: flex;
  width: 100%;
  height: 4px;
  max-width: 1100px;
  margin: 0 auto;
}

.divider-seg {
  flex: 1;
}

.divider-seg-pink {
  background: var(--color-pink);
}

.divider-seg-teal {
  background: var(--color-teal);
}

.divider-seg-gold {
  background: var(--color-gold);
}

/* Desktop header layout */
@media (min-width: 768px) {
  .app-header {
    padding: 12px 24px 0;
  }
  .header-row {
    flex-wrap: nowrap;
    padding-bottom: 12px;
  }
  .app-title {
    order: 1;
  }
  #hamburgerBtn {
    order: 0;
  }
  .search-row {
    order: 2;
    flex: 1;
    justify-content: flex-end;
  }
  .search-box {
    max-width: 420px;
  }
  #themeToggleBtn {
    order: 3;
  }
}

/* =========================================================
   ピル型ボタン / バッジ 共通
   ========================================================= */
.pill-btn {
  border: none;
  background: var(--color-icon-btn-bg);
  color: var(--color-text);
  border-radius: var(--radius-pill);
  padding: 8px 16px;
  font-size: 0.85rem;
  font-weight: 700;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.pill-btn:hover {
  filter: brightness(0.96);
}

[data-theme="dark"] .pill-btn:hover {
  filter: brightness(1.15);
}

.pill-btn.active,
.pill-btn[aria-pressed="true"] {
  background: var(--color-pink);
  color: #ffffff;
}

/* =========================================================
   ドロワー オーバーレイ / サイドバー
   ========================================================= */
.drawer-overlay {
  position: fixed;
  inset: 0;
  background: var(--color-overlay);
  z-index: 40;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.drawer-overlay.visible {
  opacity: 1;
  pointer-events: auto;
}

.search-drawer {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 300px;
  max-width: 85vw;
  background: var(--color-surface);
  z-index: 50;
  transform: translateX(-100%);
  transition: transform 0.28s ease;
  display: flex;
  flex-direction: column;
}

.search-drawer.open {
  transform: translateX(0);
}

.drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px;
  border-bottom: 1px solid var(--color-border);
}

.drawer-header h2 {
  margin: 0;
  font-size: 1.05rem;
}

.drawer-body {
  padding: 16px;
  overflow-y: auto;
  flex: 1;
}

.filter-section {
  margin-bottom: 22px;
}

.filter-title {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin: 0 0 10px 0;
}

.pill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.select-input {
  width: 100%;
  padding: 10px 10px;
  border-radius: var(--radius-sm);
  border: none;
  background: var(--color-icon-btn-bg);
  color: var(--color-text);
  font-size: 0.9rem;
}

.clear-btn {
  width: 100%;
  padding: 11px;
  border-radius: var(--radius-md);
  border: 2px solid var(--color-danger);
  background: transparent;
  color: var(--color-danger);
  font-weight: 700;
}

.clear-btn:hover {
  background: var(--color-danger);
  color: #ffffff;
}

/* =========================================================
   メインコンテンツ / グリッド
   ========================================================= */
.main-content {
  max-width: 1100px;
  margin: 0 auto;
  padding: 20px 16px 40px;
  min-height: 60vh;
}

.result-count {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  margin: 0 0 14px 4px;
}

.song-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

@media (min-width: 640px) {
  .song-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .song-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.empty-state,
.loading-state {
  text-align: center;
  color: var(--color-text-muted);
  padding: 40px 0;
}

/* =========================================================
   楽曲カード
   ========================================================= */
.song-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border-left: 5px solid var(--color-pink);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

/* 3枚ごとにアクセントカラーを循環させる（参考サイトのバリエーションを再現） */
.song-grid .song-card:nth-child(3n+1) {
  border-left-color: var(--color-pink);
  background: var(--color-surface-alt);
}

.song-grid .song-card:nth-child(3n+2) {
  border-left-color: var(--color-teal);
}

.song-grid .song-card:nth-child(3n+3) {
  border-left-color: var(--color-gold);
}

.song-card-main {
  padding: 16px 18px;
}

.song-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
}

.song-title {
  font-size: 1.05rem;
  font-weight: 800;
  margin: 0;
  line-height: 1.3;
}

.fav-btn {
  font-size: 1.25rem;
  background: transparent;
  width: 32px;
  height: 32px;
}

.song-artists {
  margin: 6px 0 0;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--color-teal);
}

.song-meta {
  margin: 6px 0 12px;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 14px;
}

.tag-badge {
  display: inline-block;
  border-radius: var(--radius-sm);
  padding: 4px 10px;
  font-size: 0.72rem;
  font-weight: 700;
}

/* タグは交互にピンク／ティールで色分け */
.tag-badge:nth-child(odd) {
  background: var(--color-pill-teal-bg);
  color: var(--color-pill-teal-text);
}

.tag-badge:nth-child(even) {
  background: var(--color-pill-pink-bg);
  color: var(--color-pill-pink-text);
}

.card-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.play-btn {
  flex: 1;
  background: var(--color-pink);
  color: #ffffff;
  font-size: 0.95rem;
  padding: 12px 16px;
}

.play-btn:hover {
  background: var(--color-pink-dark);
  filter: none;
}

.play-btn.playing {
  background: var(--color-teal);
}

.report-btn {
  font-size: 1rem;
  background: var(--color-icon-btn-bg);
}

.player-wrap {
  border-top: 1px solid var(--color-border);
  background: #000;
}

.player-embed {
  position: relative;
  width: 100%;
  padding-top: 56.25%; /* 16:9 */
}

.player-embed iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* =========================================================
   フッター
   ========================================================= */
.app-footer {
  text-align: center;
  padding: 20px 16px 30px;
  color: var(--color-text-muted);
  font-size: 0.78rem;
}

/* =========================================================
   モーダル (不備報告)
   ========================================================= */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: var(--color-overlay);
  z-index: 60;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.modal-overlay[hidden] {
  display: none;
}

.modal-box {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  width: 100%;
  max-width: 440px;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px;
  border-bottom: 1px solid var(--color-border);
}

.modal-header h2 {
  margin: 0;
  font-size: 1.05rem;
}

.modal-body {
  padding: 16px;
}

.modal-song-label {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin: 0 0 4px;
}

.modal-song-title {
  font-weight: 700;
  margin: 0 0 16px;
}

.modal-label {
  display: block;
  font-size: 0.85rem;
  margin-bottom: 6px;
}

.modal-textarea {
  width: 100%;
  border-radius: var(--radius-sm);
  border: none;
  background: var(--color-icon-btn-bg);
  color: var(--color-text);
  padding: 10px;
  font-size: 0.9rem;
  resize: vertical;
  font-family: inherit;
}

.char-count {
  text-align: right;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin: 4px 0 0;
}

.report-error-msg {
  color: var(--color-danger);
  font-size: 0.82rem;
  margin-top: 8px;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  padding: 14px 16px;
  border-top: 1px solid var(--color-border);
}

.ghost-btn {
  border: none;
  background: var(--color-icon-btn-bg);
  color: var(--color-text);
  border-radius: var(--radius-md);
  padding: 10px 16px;
  font-weight: 700;
}

.primary-btn {
  border: none;
  background: var(--color-pink);
  color: #ffffff;
  border-radius: var(--radius-md);
  padding: 10px 18px;
  font-weight: 800;
}

.primary-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.primary-btn:not(:disabled):hover {
  background: var(--color-pink-dark);
}

/* =========================================================
   トースト
   ========================================================= */
.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  background: var(--color-text);
  color: var(--color-bg);
  padding: 10px 20px;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  z-index: 80;
  max-width: 90vw;
  text-align: center;
}

.toast.toast-error {
  background: var(--color-danger);
  color: #ffffff;
}