.gdl-root {
    --gdl-blue: #2563eb;
    --gdl-blue-light: #3b82f6;
    --gdl-green: #10b981;
    --gdl-green-bg: rgba(16, 185, 129, 0.08);
    --gdl-green-border: rgba(16, 185, 129, 0.3);
    --gdl-card-bg: #fff;
    --gdl-card-border: #e2e8f0;
    --gdl-field-bg: #f8fafc;
    --gdl-field-border: #cbd5e1;
    --gdl-text-main: #1e293b;
    --gdl-text-label: #374151;
    --gdl-error-bg: rgba(239, 68, 68, 0.1);
    --gdl-error-border: rgba(239, 68, 68, 0.3);
    --gdl-divider: rgba(0, 0, 0, 0.08);

    width: 100%;
    max-width: 600px;
    margin: 0 auto;
  }

  .theme-dark .gdl-root {
    --gdl-card-bg: #1e293b;
    --gdl-card-border: #334155;
    --gdl-field-bg: #0f172a;
    --gdl-field-border: #475569;
    --gdl-text-main: #f1f5f9;
    --gdl-text-label: #cbd5e1;
    --gdl-divider: rgba(255, 255, 255, 0.08);
  }

  .gdl-card {
    background: var(--gdl-card-bg);
    border: 1px solid var(--gdl-card-border);
    border-radius: 1.5rem;
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  }

  .gdl-field {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
  }

  .gdl-label {
    font-size: 1rem;
    font-weight: 500;
    color: var(--gdl-text-label);
  }

  .gdl-input {
    width: 100%;
    padding: 1rem 1.25rem;
    background: var(--gdl-field-bg);
    border: 1px solid var(--gdl-field-border);
    border-radius: 0.75rem;
    color: var(--gdl-text-main);
    font-size: 1rem;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
    box-sizing: border-box;
  }

  .gdl-input:focus {
    border-color: var(--gdl-blue);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
    background: var(--gdl-card-bg);
  }

  .gdl-btn-primary {
    background: linear-gradient(135deg, var(--gdl-blue-light) 0%, var(--gdl-blue) 100%);
    color: #fff;
    border: none;
    border-radius: 0.75rem;
    padding: 1rem 1.5rem;
    font-size: 1.0625rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
  }

  .gdl-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.5);
  }

  .gdl-btn-primary:active {
    transform: translateY(0);
  }

  .gdl-result {
    flex-direction: column;
    gap: 1rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--gdl-divider);
  }

  .gdl-result-label {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--gdl-green);
  }

  .gdl-output-row {
    display: flex;
    gap: 0.5rem;
  }

  .gdl-output {
    color: var(--gdl-green);
    background: var(--gdl-green-bg);
    border-color: var(--gdl-green-border);
    flex: 1;
  }

  .gdl-copy-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gdl-green-bg);
    border: 1px solid var(--gdl-green-border);
    border-radius: 0.75rem;
    color: var(--gdl-green);
    width: 3rem;
    min-width: 3rem;
    cursor: pointer;
    transition: background 0.2s;
  }

  .gdl-copy-btn:hover {
    background: rgba(16, 185, 129, 0.2);
  }

  .gdl-test-btn {
    display: block;
    text-align: center;
    background: var(--gdl-green-bg);
    color: var(--gdl-green);
    border: 1px solid var(--gdl-green-border);
    border-radius: 0.75rem;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: background 0.2s, border-color 0.2s;
  }

  .gdl-test-btn:hover {
    background: rgba(16, 185, 129, 0.2);
    border-color: rgba(16, 185, 129, 0.5);
  }

  .gdl-error {
    color: #ef4444;
    background: var(--gdl-error-bg);
    border: 1px solid var(--gdl-error-border);
    border-radius: 0.75rem;
    padding: 1rem;
    font-size: 0.9375rem;
  }

  @media (max-width: 480px) {
    .gdl-card {
      padding: 1.5rem;
    }
  }