.quality-buttons {
      display: flex;
      gap: 8px;
      flex-wrap: wrap;
      margin-top: 8px;
    }
    .quality-btn {
      flex: 1;
      min-width: 140px;
      padding: 14px 16px;
      background: var(--color-bg);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-sm);
      cursor: pointer;
      font-family: var(--font-body);
      text-align: left;
      transition: all var(--transition-fast);
    }
    .quality-btn:hover {
      border-color: var(--color-primary-subtle);
      background: var(--color-primary-light);
    }
    .quality-btn.active {
      border-color: var(--color-primary);
      background: var(--color-primary-light);
    }
    .quality-btn .q-name {
      display: block;
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--color-text);
    }
    .quality-btn .q-desc {
      display: block;
      font-size: 0.75rem;
      color: var(--color-text-muted);
      margin-top: 2px;
    }
    .progress-bar-wrapper {
      width: 100%;
      height: 6px;
      background: var(--color-border);
      border-radius: 3px;
      margin-top: 16px;
      overflow: hidden;
    }
    .progress-bar-fill {
      height: 100%;
      background: var(--color-primary);
      border-radius: 3px;
      transition: width 0.3s ease;
      width: 0%;
    }
    .progress-text {
      font-size: 0.85rem;
      color: var(--color-text-secondary);
      margin-top: 8px;
      text-align: center;
    }