.urlc-root {
    --urlc-primary: #f59e0b;
    --urlc-primary-dark: #d97706;
    --urlc-secondary: #3b82f6;
    --urlc-secondary-dark: #2563eb;
    --urlc-card-bg: #fff;
    --urlc-bg: #f8fafc;
    --urlc-text: #0f172a;
    --urlc-text-muted: #64748b;
    --urlc-border: #e2e8f0;
    --urlc-encoded-bg: rgba(245, 158, 11, 0.03);

    max-width: 1000px;
    margin: 2rem auto;
    color: var(--urlc-text);
  }

  .theme-dark .urlc-root {
    --urlc-card-bg: #1e293b;
    --urlc-bg: #0f172a;
    --urlc-text: #f1f5f9;
    --urlc-text-muted: #94a3b8;
    --urlc-border: #334155;
    --urlc-encoded-bg: rgba(245, 158, 11, 0.06);
  }

  .urlc-card {
    background: var(--urlc-card-bg);
    border: 1px solid var(--urlc-border);
    border-radius: 1.25rem;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
    padding: 1.75rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
  }

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

  .urlc-field-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .urlc-field-label {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--urlc-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
  }

  .urlc-toolbar {
    display: flex;
    gap: 0.375rem;
  }

  .urlc-toolbar-btn {
    background: transparent;
    border: 1px solid var(--urlc-border);
    color: var(--urlc-text-muted);
    padding: 0.2rem 0.6rem;
    border-radius: 0.4rem;
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s;
  }

  .urlc-toolbar-btn:hover {
    background: var(--urlc-bg);
    color: var(--urlc-text);
    border-color: var(--urlc-text-muted);
  }

  .urlc-textarea {
    width: 100%;
    height: 160px;
    padding: 1rem 1.25rem;
    font-size: 0.9rem;
    color: var(--urlc-text);
    background: var(--urlc-bg);
    border: 1px solid var(--urlc-border);
    border-radius: 0.875rem;
    resize: vertical;
    transition: border-color 0.2s, box-shadow 0.2s;
    line-height: 1.6;
    outline: none;
  }

  .urlc-textarea:focus {
    border-color: var(--urlc-secondary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.12);
  }

  .urlc-textarea-encoded {
    border-color: var(--urlc-primary);
    background: var(--urlc-encoded-bg);
  }

  .urlc-textarea-encoded:focus {
    border-color: var(--urlc-primary);
    box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.12);
  }

  .urlc-actions {
    display: flex;
    justify-content: center;
    gap: 0.875rem;
  }

  @media (max-width: 480px) {
    .urlc-actions {
      flex-direction: column;
    }
  }

  .urlc-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 0.95rem;
    padding: 0.75rem 1.75rem;
    border-radius: 0.75rem;
    border: none;
    cursor: pointer;
    transition: transform 0.15s, box-shadow 0.15s, background 0.15s;
  }

  .urlc-btn:hover {
    transform: translateY(-2px);
  }

  .urlc-btn-encode {
    background: var(--urlc-primary);
    color: #fff;
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
  }

  .urlc-btn-encode:hover {
    background: var(--urlc-primary-dark);
    box-shadow: 0 6px 16px rgba(245, 158, 11, 0.4);
  }

  .urlc-btn-decode {
    background: var(--urlc-secondary);
    color: #fff;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
  }

  .urlc-btn-decode:hover {
    background: var(--urlc-secondary-dark);
    box-shadow: 0 6px 16px rgba(59, 130, 246, 0.4);
  }

  .urlc-btn-icon {
    width: 18px;
    height: 18px;
  }