.shoe-converter {
    max-width: 800px;
    margin: 0 auto;
    padding: 1rem 1rem 4rem;
  }

  .converter-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 2.5rem;
    padding: 3rem;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.05);
    display: flex;
    flex-direction: column;
    gap: 3rem;
  }

  .theme-dark .converter-card {
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.3);
  }

  .gender-selector {
    display: flex;
    justify-content: center;
    gap: 2rem;
  }

  .gender-btn {
    width: 80px;
    height: 80px;
    border-radius: 2rem;
    border: 2px solid transparent;
    background: var(--bg-page);
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
  }

  .gender-btn svg {
    width: 2.5rem;
    height: 2.5rem;
  }

  .gender-btn-men.active {
    background: rgba(59, 130, 246, 0.08);
    border-color: #3b82f6;
    color: #3b82f6;
    box-shadow: 0 10px 25px rgba(59, 130, 246, 0.2);
    transform: translateY(-4px);
  }

  .gender-btn-women.active {
    background: rgba(244, 63, 94, 0.08);
    border-color: #f43f5e;
    color: #f43f5e;
    box-shadow: 0 10px 25px rgba(244, 63, 94, 0.2);
    transform: translateY(-4px);
  }

  .size-section {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
  }

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

  .field-label {
    font-size: 0.75rem;
    font-weight: 800;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
  }

  .select-wrap {
    position: relative;
  }

  .select-wrap::after {
    content: '▾';
    position: absolute;
    right: 1.25rem;
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
    color: var(--text-muted);
    font-size: 1rem;
  }

  .region-select {
    appearance: none;
    width: 100%;
    background: var(--bg-page);
    border: 1.5px solid var(--border-color);
    border-radius: 1rem;
    padding: 0.875rem 2.75rem 0.875rem 1.25rem;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-main);
    outline: none;
    cursor: pointer;
    transition: border-color 0.2s;
  }

  .region-select:focus {
    border-color: #3b82f6;
  }

  .size-grid-container {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
  }

  .grid-header {
    text-align: center;
  }

  .grid-header h3 {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--text-main);
    margin: 0 0 0.5rem;
  }

  .grid-header p {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin: 0;
  }

  .size-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(65px, 1fr));
    gap: 0.75rem;
  }

  .size-cell {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 1rem;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.2s;
  }

  .size-cell:hover {
    border-color: #3b82f6;
    color: #3b82f6;
    transform: scale(1.05);
  }

  .size-cell.active {
    background: #3b82f6;
    border-color: #3b82f6;
    color: white;
    box-shadow: 0 10px 20px rgba(59, 130, 246, 0.25);
  }

  .results-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    background: var(--bg-page);
    padding: 2rem;
    border-radius: 2rem;
    border: 1px solid var(--border-color);
  }

  .result-card {
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
  }

  .result-label {
    font-size: 0.75rem;
    font-weight: 800;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
  }

  .result-value {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--text-main);
    line-height: 1;
  }

  .result-unit {
    font-size: 0.875rem;
    font-weight: 700;
    color: #3b82f6;
    margin-top: 0.25rem;
  }

  .result-unit.hidden {
    display: none;
  }

  .info-banner {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem;
    background: rgba(3, 105, 161, 0.06);
    border-radius: 1.25rem;
    color: #0369a1;
    font-size: 0.875rem;
    line-height: 1.5;
  }

  .theme-dark .info-banner {
    background: rgba(3, 105, 161, 0.1);
    color: #7dd3fc;
  }

  .info-banner svg {
    width: 1.5rem;
    height: 1.5rem;
    flex-shrink: 0;
  }

  .info-banner p {
    margin: 0;
  }

  @media (max-width: 640px) {
    .converter-card {
      padding: 1.5rem;
      gap: 2rem;
    }

    .results-container {
      grid-template-columns: 1fr;
    }
  }