/* ===== LAB SECTION ===== */
    #lab-section {
      background: linear-gradient(180deg, transparent, var(--bg-dark));
      padding-top: 30px;
      padding-bottom: 30px;
    }

    #lab-section .section-header { margin-bottom: 12px; }
    #lab-section .section-title { font-size: clamp(1.3rem, 2.5vw, 1.6rem); }
    #lab-section .section-subtitle { font-size: 0.82rem; margin-bottom: 0; }
    }

    #lab-section .section-header {
      margin-bottom: 30px;
    }

    /* ===== UPLOAD SECTION ===== */
    #upload-section {
      margin-bottom: 40px;
    }

    .upload-container {
      background: var(--glass-bg);
      border: 2px dashed var(--border-subtle);
      border-radius: 20px;
      padding: 40px;
      text-align: center;
      cursor: pointer;
      transition: var(--transition-smooth);
      backdrop-filter: blur(var(--glass-blur));
      position: relative;
      overflow: hidden;
    }

    .upload-container:hover,
    .upload-container.dragover {
      border-color: var(--accent-gold);
      background: rgba(196, 162, 101, 0.05);
      box-shadow: 0 0 40px rgba(196, 162, 101, 0.1);
    }

    .upload-icon {
      font-size: 3rem;
      margin-bottom: 20px;
      animation: pulse 2s ease-in-out infinite;
    }

    @keyframes pulse {
      0%, 100% { transform: scale(1); }
      50% { transform: scale(1.1); }
    }

    .upload-title {
      font-family: 'Noto Serif SC', serif;
      font-size: 1.3rem;
      margin-bottom: 10px;
    }

    .upload-desc {
      color: var(--text-secondary);
      font-size: 0.95rem;
      margin-bottom: 20px;
    }

    .upload-formats {
      display: flex;
      justify-content: center;
      gap: 15px;
      flex-wrap: wrap;
    }

    .format-tag {
      padding: 6px 14px;
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: 20px;
      font-size: 0.85rem;
      color: var(--text-secondary);
    }

    .quota-info {
      margin-top: 20px;
      padding: 15px;
      background: var(--bg-card);
      border-radius: 12px;
    }

    .quota-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 10px;
    }

    .quota-label {
      font-size: 0.9rem;
      color: var(--text-secondary);
    }

    .quota-count {
      font-family: 'Ibarra Real Nova', serif;
      font-size: 1.1rem;
      color: var(--accent-gold);
    }

    .quota-bar {
      height: 8px;
      background: var(--bg-dark);
      border-radius: 4px;
      overflow: hidden;
    }

    .quota-progress {
      height: 100%;
      background: linear-gradient(90deg, var(--accent-gold), var(--accent-warm));
      border-radius: 4px;
      transition: width 0.5s ease;
    }

    .upload-preview {
      margin-top: 20px;
      display: none;
    }

    .upload-preview.visible {
      display: block;
    }

    .preview-container {
      display: flex;
      align-items: flex-start;
      gap: 16px;
      padding: 16px;
      background: var(--bg-card);
      border-radius: 12px;
      border: 1px solid var(--border-subtle);
      flex-wrap: wrap;
    }

    .preview-image {
      width: 80px;
      height: 80px;
      border-radius: 8px;
      object-fit: cover;
      border: 1px solid var(--border-subtle);
      flex-shrink: 0;
    }

    .preview-info {
      flex: 1;
    }

    .preview-name {
      font-weight: 500;
      margin-bottom: 5px;
    }

    .preview-size {
      font-size: 0.85rem;
      color: var(--text-secondary);
    }

    .preview-status {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-top: 10px;
    }

    .status-indicator {
      width: 8px;
      height: 8px;
      border-radius: 50%;
    }

    .status-indicator.success { background: #4CAF50; }
    .status-indicator.error { background: #F44336; }
    .status-indicator.loading { background: #FFC107; animation: blink 1s infinite; }

    @keyframes blink {
      0%, 100% { opacity: 1; }
      50% { opacity: 0.5; }
    }

    .status-text {
      font-size: 0.85rem;
      color: var(--text-secondary);
    }

    /* ===== LAB MIXER ===== */
    #lab-mixer-section {
      display: none;
      padding-top: 40px;
    }

    #lab-mixer-section.visible {
      display: block;
    }

    .lab-container {
      display: grid;
      grid-template-columns: 1fr 1.4fr;
      gap: 48px;
      max-width: 1320px;
      margin: 0 auto;
      align-items: start;
    }

    /* === Control Panel === */
    .control-panel {
      background: var(--glass-bg);
      border: 1px solid var(--glass-border);
      border-radius: 20px;
      padding: 24px 26px;
      backdrop-filter: blur(var(--glass-blur));
      box-shadow: var(--shadow-soft);
    }

    .panel-title {
      font-family: 'Noto Serif SC', serif;
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 4px;
      color: var(--accent-gold);
    }

    .panel-subtitle {
      font-family: 'Ibarra Real Nova', serif;
      font-style: italic;
      font-size: 0.88rem;
      color: var(--text-secondary);
      margin-bottom: 16px;
      letter-spacing: 0.06em;
    }

    .control-group {
      margin-bottom: 14px;
    }

    .control-label {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.82rem;
      font-weight: 600;
      color: var(--text-primary);
      margin-bottom: 8px;
      text-transform: uppercase;
      letter-spacing: 0.08em;
    }

    .control-icon { font-size: 1.2rem; }

    .select-wrapper {
      position: relative;
    }

    .control-select {
      width: 100%;
      padding: 10px 32px 10px 14px;
      font-size: 0.85rem;
      background: var(--bg-dark);
      border: 1px solid var(--border-subtle);
      border-radius: 12px;
      color: var(--text-primary);
      font-family: 'Noto Sans SC', sans-serif;
      font-size: 1rem;
      cursor: pointer;
      appearance: none;
      -webkit-appearance: none;
      transition: var(--transition-smooth);
    }

    .control-select:hover { border-color: var(--accent-gold); }
    .control-select:focus {
      outline: none;
      border-color: var(--accent-gold);
      box-shadow: 0 0 0 3px rgba(196, 162, 101, 0.1);
    }

    .select-arrow {
      position: absolute;
      right: 15px;
      top: 50%;
      transform: translateY(-50%);
      pointer-events: none;
      color: var(--text-muted);
      transition: transform 0.3s;
    }

    .control-select:focus + .select-arrow {
      transform: translateY(-50%) rotate(180deg);
    }

    /* Waveform */
    .waveform-container {
      margin-top: 8px;
      padding-top: 8px;
      border-top: 1px dashed var(--border-subtle);
    }

    .waveform-label {
      font-size: 0.8rem;
      text-transform: uppercase;
      letter-spacing: 0.15em;
      color: var(--text-muted);
      margin-bottom: 12px;
    }

    #waveform {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 2px;
      height: 20px;
    }

    .waveform-bar {
      width: 3px;
      background: var(--accent-gold);
      border-radius: 2px;
      transition: background 0.3s;
    }

    /* === Result Panel === */
    .result-panel {
      position: relative;
    }

    #recipe-display {
      background: var(--glass-bg);
      border: 1px solid var(--glass-border);
      border-radius: 20px;
      padding: 20px 24px;
      min-height: 260px;
      backdrop-filter: blur(var(--glass-blur));
      box-shadow: var(--shadow-soft), var(--shadow-glow);
      position: relative;
      overflow: hidden;
      transition: opacity 0.4s ease;
    }

    #recipe-display.fading { opacity: 0.4; }

    .result-badge {
      display: flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 8px;
    }

    .badge-label {
      font-size: 0.78rem;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 0.2em;
      color: var(--text-secondary);
      padding: 6px 14px;
      background: var(--bg-dark);
      border: 1px solid var(--border-subtle);
      border-radius: 20px;
    }

    .match-percent {
      font-family: 'Ibarra Real Nova', serif;
      font-size: 1.3rem;
      color: var(--accent-gold);
      font-weight: 700;
    }

    .result-header {
      margin-bottom: 12px;
    }

    .result-category {
      display: inline-block;
      font-size: 0.8rem;
      font-weight: 600;
      padding: 5px 14px;
      background: rgba(196, 162, 101, 0.12);
      border: 1px solid rgba(196, 162, 101, 0.35);
      border-radius: 20px;
      color: var(--accent-gold);
      margin-bottom: 14px;
    }

    .result-name {
      font-family: 'Noto Serif SC', serif;
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 2px;
      line-height: 1.2;
    }

    .result-name-en {
      font-family: 'Ibarra Real Nova', serif;
      font-style: italic;
      font-size: 0.85rem;
      color: var(--text-muted);
      letter-spacing: 0.05em;
    }

    .result-desc {
      color: var(--text-secondary);
      font-size: 0.88rem;
      line-height: 1.5;
      margin-bottom: 8px;
      padding: 6px 0;
      border-top: 1px dashed var(--border-subtle);
      border-bottom: 1px dashed var(--border-subtle);
    }

    /* Palette */
    .palette-wrapper {
      margin-bottom: 8px;
    }

    .section-mini-title {
      font-size: 0.76rem;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 0.12em;
      color: var(--text-muted);
      margin-bottom: 5px;
    }

    #palette {
      display: flex;
      gap: 8px;
    }

    .palette-swatch {
      flex: 1;
      height: 28px;
      border-radius: 6px;
      transition: transform 0.3s;
      cursor: pointer;
      position: relative;
      overflow: hidden;
    }

    .palette-swatch:hover { transform: scale(1.05) translateY(-2px); }
    .palette-swatch::after {
      content: attr(title);
      position: absolute;
      bottom: 5px;
      left: 50%;
      transform: translateX(-50%);
      font-size: 0.65rem;
      color: rgba(255,255,255,0.7);
      opacity: 0;
      transition: opacity 0.3s;
      background: rgba(0,0,0,0.5);
      padding: 2px 6px;
      border-radius: 4px;
    }
    .palette-swatch:hover::after { opacity: 1; }

    /* Tone Tags */
    .tags-wrapper {
      margin-bottom: 8px;
    }

    #tone-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .tone-tag {
      font-size: 0.72rem;
      padding: 3px 10px;
      background: var(--bg-dark);
      border: 1px solid var(--border-subtle);
      border-radius: 16px;
      color: var(--text-secondary);
      transition: var(--transition-smooth);
    }

    .tone-tag:hover {
      border-color: var(--accent-gold);
      color: var(--accent-gold);
    }

    /* Music Section */
    .music-wrapper {
      margin-bottom: 6px;
    }

    .music-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 8px;
    }

    .music-column {
      background: var(--bg-dark);
      border-radius: 8px;
      padding: 8px;
    }

    .music-column-title {
      font-size: 0.7rem;
      text-transform: uppercase;
      letter-spacing: 0.1em;
      color: var(--text-muted);
      margin-bottom: 6px;
      display: flex;
      align-items: center;
      gap: 4px;
    }

    #albums-list {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

.album-item {
      display: flex;
      align-items: center;
      gap: 6px;
      padding: 2px 4px;
      border-radius: 4px;
      transition: background 0.3s;
    }

    .album-item:hover { background: var(--bg-card); }

    .album-cover-placeholder {
      width: 28px;
      height: 28px;
      border-radius: 4px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.55rem;
      color: var(--text-muted);
      text-align: center;
      padding: 4px;
    }

    .album-name {
      font-size: 0.78rem;
      color: var(--text-secondary);
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
      max-width: 160px;
    }

    /* Runners */
    .runners-wrapper {
      margin-top: 6px;
    }

    #runners {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 6px;
    }

    .runner-card {
      background: var(--bg-dark);
      border: 1px solid var(--border-subtle);
      border-radius: 8px;
      padding: 4px 6px;
      text-align: center;
      text-align: center;
      transition: var(--transition-smooth);
      cursor: pointer;
    }

    .runner-card:hover {
      border-color: var(--accent-gold);
      transform: translateY(-2px);
    }

    .runner-name {
      font-size: 0.75rem;
      font-weight: 500;
      margin-bottom: 1px;
    }

    .runner-category {
      font-size: 0.65rem;
      color: var(--text-muted);
      margin-bottom: 2px;
    }

    .runner-pct {
      font-family: 'Ibarra Real Nova', serif;
      font-size: 0.9rem;
      color: var(--accent-gold);
    }

    /* Ratio Bar */
    .ratio-wrapper {
      margin-top: 8px;
      padding-top: 8px;
      border-top: 1px dashed var(--border-subtle);
    }

    .ratio-bar-container {
      display: flex;
      height: 8px;
      border-radius: 4px;
      overflow: hidden;
      background: var(--bg-dark);
    }

    .ratio-segment {
      height: 100%;
      transition: width 0.5s ease;
    }

    .ratio-labels {
      display: flex;
      justify-content: space-between;
      margin-top: 8px;
      font-size: 0.7rem;
      color: var(--text-muted);
      text-transform: uppercase;
      letter-spacing: 0.08em;
    }

    /* ===== CTA BUTTON ===== */
    .lab-cta-container {
      margin-top: 30px;
      text-align: center;
    }

    .btn-book-recipe {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 10px 20px;
      font-size: 0.88rem;
      background: linear-gradient(135deg, var(--accent-gold), var(--accent-warm));
      color: var(--bg-dark);
      font-family: 'Noto Serif SC', serif;
      font-size: 1.05rem;
      font-weight: 600;
      border: none;
      border-radius: 50px;
      cursor: pointer;
      transition: var(--transition-smooth);
      box-shadow: 0 4px 20px rgba(196, 162, 101, 0.4);
    }

    .btn-book-recipe:hover {
      transform: translateY(-3px);
      box-shadow: 0 8px 40px rgba(196, 162, 101, 0.5);
    }

    .btn-book-recipe .icon {
      font-size: 1.3rem;
    }