/* ===== CSS VARIABLES & RESET ===== */
:root {
  --bg: #0b0c14;
  --surface: #13141f;
  --surface2: #1a1b2e;
  --border: rgba(255,255,255,0.07);

  --b-color: #00c9a7;
  --b-glow: rgba(0,201,167,0.25);
  --b-dim: rgba(0,201,167,0.08);

  --a-color: #ff6b9d;
  --a-glow: rgba(255,107,157,0.25);
  --a-dim: rgba(255,107,157,0.08);

  --final-color: #f5c518;
  --final-glow: rgba(245,197,24,0.25);
  --final-dim: rgba(245,197,24,0.08);

  --text-primary: #f0f0f8;
  --text-secondary: #9a9ab0;
  --text-dim: #5a5a72;

  --radius: 16px;
  --radius-sm: 10px;
  --transition: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text-primary);
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 15px;
  line-height: 1.7;
  min-height: 100vh;
}

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: 420px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  padding: 80px 20px 60px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 60% at 30% 40%, rgba(255,107,157,0.18) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 70% 60%, rgba(0,201,167,0.15) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 50% 80%, rgba(245,197,24,0.10) 0%, transparent 60%),
    linear-gradient(160deg, #0d0e1c 0%, #111225 50%, #0b0c14 100%);
  z-index: 0;
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='30' cy='30' r='1' fill='rgba(255,255,255,0.03)'/%3E%3C/svg%3E") repeat;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-sub {
  font-family: 'Playfair Display', serif;
  font-style: italic;
  color: var(--a-color);
  letter-spacing: 0.2em;
  font-size: 14px;
  margin-bottom: 16px;
  opacity: 0.9;
}

.hero-title {
  font-size: clamp(2.4rem, 6vw, 4rem);
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 16px;
  background: linear-gradient(135deg, #ffffff 30%, var(--a-color) 70%, var(--b-color) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-title span {
  display: block;
  font-family: 'Playfair Display', serif;
  font-style: italic;
}

.hero-desc {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 28px;
  letter-spacing: 0.05em;
}

.hero-badges {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.badge {
  padding: 8px 20px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.badge-b { background: var(--b-dim); color: var(--b-color); border: 1px solid var(--b-color); }
.badge-a { background: var(--a-dim); color: var(--a-color); border: 1px solid var(--a-color); }
.badge-final { background: var(--final-dim); color: var(--final-color); border: 1px solid var(--final-color); }

.badge-arrow { color: var(--text-dim); font-size: 18px; }

.scroll-hint {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--text-dim);
  font-size: 12px;
  animation: bounce 2s infinite;
}
@keyframes bounce {
  0%,100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}

/* ===== LEGEND ===== */
.legend {
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}

.legend-items {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
  justify-content: center;
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 20px;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 12px;
}

.legend-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  flex-shrink: 0;
}

.dot-b { background: var(--b-color); box-shadow: 0 0 8px var(--b-color); }
.dot-a { background: var(--a-color); box-shadow: 0 0 8px var(--a-color); }
.dot-final { background: var(--final-color); box-shadow: 0 0 8px var(--final-color); }

.legend-item strong { display: block; font-size: 13px; font-weight: 700; }
.legend-item small { color: var(--text-secondary); font-size: 11px; }

/* ===== DANCE SECTION ===== */
.dance-section {
  margin: 56px 0;
}

.dance-header {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 32px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}

.dance-number {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 900;
  flex-shrink: 0;
}

.dance-title-wrap { min-width: 0; }
.dance-jp { font-size: clamp(1.4rem, 4vw, 1.9rem); font-weight: 900; letter-spacing: 0.04em; }
.dance-en { font-size: 12px; font-weight: 500; letter-spacing: 0.15em; opacity: 0.6; margin-top: 2px; }
.dance-desc { font-size: 12px; color: var(--text-secondary); margin-top: 4px; }

/* Colors per dance */
.dance-cha .dance-number { background: linear-gradient(135deg,#ff6b35,#f7c59f); color: #1a1a1a; }
.dance-cha .dance-jp { color: #ff8c55; }
.dance-samba .dance-number { background: linear-gradient(135deg,#00c9a7,#4af0d4); color: #1a1a1a; }
.dance-samba .dance-jp { color: #00c9a7; }
.dance-rumba .dance-number { background: linear-gradient(135deg,#ff6b9d,#ffb3cc); color: #1a1a1a; }
.dance-rumba .dance-jp { color: #ff6b9d; }
.dance-paso .dance-number { background: linear-gradient(135deg,#c0392b,#e74c3c); color: #fff; }
.dance-paso .dance-jp { color: #e74c3c; }
.dance-jive .dance-number { background: linear-gradient(135deg,#f39c12,#f5c518); color: #1a1a1a; }
.dance-jive .dance-jp { color: #f5c518; }

/* ===== PROGRAM GRID ===== */
.program-grid {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* ===== HEAT ROW ===== */
.heat-row {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--surface);
  transition: transform var(--transition), box-shadow var(--transition);
  cursor: default;
}

.heat-row:hover {
  transform: translateY(-2px);
}

/* Type colors */
.heat-row.type-b { border-color: rgba(0,201,167,0.3); }
.heat-row.type-b:hover { box-shadow: 0 8px 32px var(--b-glow); }
.heat-row.type-a { border-color: rgba(255,107,157,0.3); }
.heat-row.type-a:hover { box-shadow: 0 8px 32px var(--a-glow); }
.heat-row.type-final { border-color: rgba(245,197,24,0.4); }
.heat-row.type-final:hover { box-shadow: 0 8px 32px var(--final-glow); }

/* ===== HEAT LABEL ===== */
.heat-label {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 18px 12px;
  gap: 6px;
  text-align: center;
}

.type-b .heat-label { background: linear-gradient(135deg, rgba(0,201,167,0.15), rgba(0,201,167,0.05)); }
.type-a .heat-label { background: linear-gradient(135deg, rgba(255,107,157,0.15), rgba(255,107,157,0.05)); }
.type-final .heat-label { background: linear-gradient(135deg, rgba(245,197,24,0.2), rgba(245,197,24,0.07)); }

.label-badge {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.12em;
  padding: 3px 10px;
  border-radius: 100px;
}

.type-b .label-badge { background: var(--b-dim); color: var(--b-color); border: 1px solid rgba(0,201,167,0.4); }
.type-a .label-badge { background: var(--a-dim); color: var(--a-color); border: 1px solid rgba(255,107,157,0.4); }
.type-final .label-badge { background: var(--final-dim); color: var(--final-color); border: 1px solid rgba(245,197,24,0.4); }

.heat-num {
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 0.08em;
}

.heat-order {
  font-size: 22px;
  font-weight: 900;
  line-height: 1;
}

.type-b .heat-order { color: var(--b-color); }
.type-a .heat-order { color: var(--a-color); }
.type-final .heat-order { color: var(--final-color); }

/* ===== HEAT CONTENT ===== */
.heat-content {
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.heat-title {
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 0.12em;
  font-weight: 600;
  text-transform: uppercase;
  margin-bottom: 2px;
}

.songs-list {
  display: flex;
  flex-direction: column;
  gap: 5px;
  list-style: none;
}

.song-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13.5px;
  line-height: 1.5;
  padding: 6px 10px;
  border-radius: 8px;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
  position: relative;
  outline: none;
}

.song-item:hover, .song-item:focus-visible {
  background: rgba(255,255,255,0.06);
  transform: translateX(4px);
}

.song-item:hover .play-btn,
.song-item:focus-visible .play-btn {
  opacity: 1;
  transform: scale(1.15);
}

.song-text { flex: 1; }

.song-num {
  font-size: 10px;
  color: var(--text-dim);
  min-width: 16px;
  text-align: right;
  flex-shrink: 0;
}

.play-btn {
  font-size: 12px;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  opacity: 0;
  transition: opacity var(--transition), transform var(--transition), background var(--transition);
  color: var(--text-secondary);
  margin-left: auto;
}

.type-b .song-item:hover .play-btn { background: var(--b-dim); color: var(--b-color); }
.type-a .song-item:hover .play-btn { background: var(--a-dim); color: var(--a-color); }
.type-final .song-item:hover .play-btn { background: var(--final-dim); color: var(--final-color); }

.song-title { font-weight: 600; color: var(--text-primary); }
.song-artist { color: var(--text-secondary); font-size: 12px; }
.song-note { color: var(--text-dim); font-size: 11px; margin-left: 4px; }

/* Final has special styling */
.type-final .song-title { color: var(--final-color); }
.type-final .heat-content { background: rgba(245,197,24,0.02); }

/* ===== FINAL SEPARATOR ===== */
.final-separator {
  display: flex;
  align-items: center;
  gap: 16px;
  margin: 24px 0 16px;
}

.final-separator::before,
.final-separator::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(245,197,24,0.4), transparent);
}

.final-separator span {
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--final-color);
  font-weight: 700;
  white-space: nowrap;
}

/* ===== PROGRESS BAR ===== */
.section-progress {
  display: flex;
  gap: 6px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.progress-step {
  height: 4px;
  border-radius: 100px;
  flex: 1;
  min-width: 24px;
  opacity: 0.4;
  transition: opacity 0.3s;
}

.progress-step.step-b { background: var(--b-color); }
.progress-step.step-a { background: var(--a-color); }
.progress-step.step-final { background: var(--final-color); opacity: 1; flex: 0.5; }

/* ===== TIMELINE CONNECTOR ===== */
.timeline-connector {
  display: flex;
  justify-content: center;
  padding: 4px 0;
  color: var(--text-dim);
  font-size: 13px;
  letter-spacing: 0.15em;
  font-weight: 600;
}

.connector-b { color: var(--b-color); opacity: 0.6; }
.connector-a { color: var(--a-color); opacity: 0.6; }

/* ===== FOOTER ===== */
.footer {
  text-align: center;
  padding: 40px 20px;
  border-top: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 12px;
  letter-spacing: 0.08em;
  margin-top: 60px;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 600px) {
  .heat-row {
    grid-template-columns: 90px 1fr;
  }
  .heat-label { padding: 14px 8px; }
  .heat-content { padding: 14px 14px; }
  .song-item { font-size: 12.5px; }
  .dance-header { gap: 14px; }
}

/* ===== PLAYER MODAL ===== */
body.modal-open { overflow: hidden; }

.player-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.35s ease;
}

.player-modal.open {
  opacity: 1;
  pointer-events: all;
}

.player-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.75);
  backdrop-filter: blur(6px);
}

.player-panel {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 720px;
  background: #16172a;
  border: 1px solid rgba(255,255,255,0.1);
  border-bottom: none;
  border-radius: 24px 24px 0 0;
  overflow: hidden;
  transform: translateY(100%);
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: 0 -20px 80px rgba(0,0,0,0.6);
}

.player-modal.open .player-panel {
  transform: translateY(0);
}

.player-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px 16px;
  border-bottom: 1px solid rgba(255,255,255,0.07);
  gap: 16px;
}

.player-info {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.player-icon {
  font-size: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--a-color), var(--b-color));
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  animation: pulse-icon 2s ease-in-out infinite;
}

@keyframes pulse-icon {
  0%,100% { box-shadow: 0 0 0 0 rgba(255,107,157,0.4); }
  50% { box-shadow: 0 0 0 8px rgba(255,107,157,0); }
}

.player-song-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.player-song-artist {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 2px;
}

.player-close {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  color: var(--text-secondary);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  font-size: 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background var(--transition), color var(--transition);
}

.player-close:hover {
  background: rgba(255,255,255,0.18);
  color: var(--text-primary);
}

.player-embed-wrap {
  position: relative;
  width: 100%;
  padding-top: 56.25%; /* 16:9 */
  background: #0a0a12;
}

.player-loading {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  color: var(--text-secondary);
  font-size: 13px;
  letter-spacing: 0.08em;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}

.player-loading.visible { opacity: 1; }
.player-loading .error-text { display: none; font-size: 12px; text-align: center; padding: 0 16px; color: var(--text-secondary); }
.player-loading.error-state .spinner { display: none; }
.player-loading.error-state .loading-text { display: none; }
.player-loading.error-state .error-text { display: block; }
.player-loading.error-state { opacity: 1; }

.spinner {
  width: 36px;
  height: 36px;
  border: 3px solid rgba(255,255,255,0.1);
  border-top-color: var(--a-color);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.player-iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
  opacity: 0;
  transition: opacity 0.4s ease;
}

.player-iframe.loaded { opacity: 1; }

.player-footer {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 24px 18px;
  flex-wrap: wrap;
}

.player-yt-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #ff0000;
  color: #fff;
  text-decoration: none;
  padding: 8px 18px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  transition: filter var(--transition), transform var(--transition);
  white-space: nowrap;
}

.player-yt-btn:hover {
  filter: brightness(1.15);
  transform: translateY(-1px);
}

.ytmusic-btn {
  background: linear-gradient(135deg, #ff0000, #cc0000);
}

.ytmusic-btn {
  background: #1a1a1a;
  border: 1px solid rgba(255,255,255,0.15);
}

.player-hint {
  font-size: 11px;
  color: var(--text-dim);
  line-height: 1.5;
}

@media (max-width: 600px) {
  .player-panel { border-radius: 16px 16px 0 0; }
  .player-header { padding: 16px 16px 12px; }
  .player-footer { padding: 12px 16px 16px; }
  .player-hint { display: none; }
}