.ds {
    --ds-accent: #7c3aed;
    --ds-bg: rgba(255, 255, 255, 0.95);
    --ds-border: rgba(226, 232, 240, 0.8);
    --ds-text: #1e293b;
    --ds-muted: #64748b;
    --ds-btn-bg: rgba(248, 250, 252, 0.9);
    --ds-btn-border: rgba(226, 232, 240, 0.8);
    --ds-canvas-bg: #f1f5f9;
    --ds-upload-bg: rgba(248, 250, 252, 0.5);

    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    background: var(--ds-bg);
    border: 1px solid var(--ds-border);
    border-radius: 2rem;
    padding: 2rem;
    max-width: 960px;
    margin: 2rem auto;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
  }

  .theme-dark .ds {
    --ds-bg: rgba(15, 23, 42, 0.9);
    --ds-border: rgba(51, 65, 85, 0.8);
    --ds-text: #f8fafc;
    --ds-muted: #94a3b8;
    --ds-btn-bg: rgba(30, 41, 59, 0.8);
    --ds-btn-border: rgba(51, 65, 85, 0.8);
    --ds-canvas-bg: #1e293b;
    --ds-upload-bg: rgba(30, 41, 59, 0.5);
  }

  .ds__types {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .ds__btn {
    padding: 0.45rem 1rem;
    border-radius: 2rem;
    border: 1px solid var(--ds-btn-border);
    background: var(--ds-btn-bg);
    color: var(--ds-muted);
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s;
    white-space: nowrap;
  }

  .ds__btn:hover {
    border-color: var(--ds-accent);
    color: var(--ds-accent);
  }

  .ds__btn--active {
    background: var(--ds-accent);
    border-color: var(--ds-accent);
    color: #fff;
  }

  .ds__btn--active:hover {
    color: #fff;
  }

  .ds__type-desc {
    font-size: 0.875rem;
    color: var(--ds-muted);
    margin: 0;
    min-height: 1.4em;
    transition: color 0.2s;
  }

  .ds__comparison {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
  }

  .ds__panel {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
  }

  .ds__panel-label {
    font-size: 0.7rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--ds-muted);
  }

  .ds__panel-label--sim {
    color: var(--ds-accent);
  }

  .ds__canvas {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 0.75rem;
    background: var(--ds-canvas-bg);
    border: 1px solid var(--ds-border);
  }

  .ds__upload {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.25rem;
    border: 1px dashed var(--ds-btn-border);
    border-radius: 1rem;
    background: var(--ds-upload-bg);
    transition: border-color 0.2s;
    flex-wrap: wrap;
  }

  .ds__upload--drag {
    border-color: var(--ds-accent);
  }

  .ds__upload-label {
    display: inline-block;
    padding: 0.5rem 1.25rem;
    background: var(--ds-accent);
    color: #fff;
    border-radius: 2rem;
    font-size: 0.825rem;
    font-weight: 700;
    cursor: pointer;
    transition: opacity 0.15s;
  }

  .ds__upload-label:hover {
    opacity: 0.85;
  }

  .ds__upload-or {
    font-size: 0.825rem;
    color: var(--ds-muted);
  }

  .ds__file-input {
    display: none;
  }

  @media (max-width: 640px) {
    .ds {
      padding: 1.25rem;
      border-radius: 1.5rem;
      margin: 1rem 0;
      gap: 1.25rem;
    }

    .ds__comparison {
      grid-template-columns: 1fr;
    }

    .ds__btn {
      font-size: 0.75rem;
      padding: 0.4rem 0.85rem;
    }
  }