@layer components {
  .jse-host {
    display: block;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";

    /* Default Theme Variables (Light Mode) */
    --jse-bg: #ffffff;
    --jse-bg-secondary: #f3f4f6;
    --jse-bg-tertiary: #e5e7eb;

    --jse-text-primary: #111827;
    --jse-text-secondary: #4b5563;
    --jse-text-tertiary: #9ca3af;

    --jse-border: #e5e7eb;
    --jse-border-focus: #6366f1;

    --jse-primary: #4f46e5;
    --jse-primary-hover: #4338ca;
    --jse-primary-text: #ffffff;

    --jse-danger: #dc2626;
    --jse-danger-bg: #fef2f2;
    --jse-danger-border: #fecaca;

    --jse-success: #059669;
    --jse-success-bg: #ecfdf5;

    --jse-radius: 0.375rem;
    --jse-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --jse-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  }

  @media (prefers-color-scheme: dark) {
    .jse-host {
      --jse-bg: #111827;
      --jse-bg-secondary: #1f2937;
      --jse-bg-tertiary: #374151;

      --jse-text-primary: #f9fafb;
      --jse-text-secondary: #d1d5db;
      --jse-text-tertiary: #9ca3af;

      --jse-border: #374151;
      --jse-border-focus: #818cf8;

      --jse-primary: #6366f1;
      --jse-primary-hover: #818cf8;

      --jse-danger: #ef4444;
      --jse-danger-bg: #450a0a;
      --jse-danger-border: #7f1d1d;

      --jse-success: #10b981;
      --jse-success-bg: #064e3b;
    }
  }

  /* Layout & Containers */
  .jse-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    color: var(--jse-text-primary);
    background-color: var(--jse-bg);
    min-height: 100vh;
    padding: 0 1rem;
  }

  .jse-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    background-color: var(--jse-bg-secondary);
    border-bottom: 1px solid var(--jse-border);
    gap: 1rem;
  }

  .jse-schema-selector {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex: 1;
    max-width: 500px;
    font-size: 0.875rem;
    color: var(--jse-text-secondary);
  }

  .jse-schema-selector label {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    font-weight: 600;
  }

  .jse-schema-selector input {
    flex: 1;
    padding: 0.25rem 0.5rem;
    border: 1px solid var(--jse-border);
    border-radius: 0.375rem;
    font-size: 0.875rem;
    background-color: var(--jse-bg);
    color: var(--jse-text-primary);
  }

  .jse-schema-selector input:focus {
    outline: 2px solid transparent;
    outline-offset: 2px;
    border-color: var(--jse-border-focus);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
  }


  .jse-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 9999px;
    background-color: var(--jse-bg-secondary);
    color: var(--jse-text-secondary);
    border: 1px solid var(--jse-border);
  }

  .jse-badge-info {
    background-color: var(--jse-bg-tertiary);
    color: var(--jse-text-primary);
  }

  .jse-badge-logic {
    background-color: var(--jse-danger-bg);
    color: var(--jse-danger);
    border-color: var(--jse-danger-border);
  }

  .jse-tabs {
    display: flex;
    gap: 0.25rem;
    background-color: var(--jse-bg-secondary);
    padding: 0.25rem;
    border-radius: var(--jse-radius);
    border: 1px solid var(--jse-border);
  }

  .jse-tab-btn {
    padding: 0.375rem 0.75rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: calc(var(--jse-radius) - 2px);
    border: none;
    background: transparent;
    color: var(--jse-text-secondary);
    cursor: pointer;
    transition: all 0.2s;
  }

  .jse-tab-btn:hover {
    color: var(--jse-text-primary);
  }

  .jse-tab-btn.active {
    background-color: var(--jse-bg);
    color: var(--jse-primary);
    box-shadow: var(--jse-shadow-sm);
  }

  /* Buttons */
  .jse-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--jse-radius);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
  }

  .jse-btn-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
  }

  .jse-btn-xs {
    padding: 0.125rem 0.5rem;
    font-size: 0.75rem;
  }

  .jse-btn-primary {
    background-color: var(--jse-primary);
    color: var(--jse-primary-text);
    box-shadow: var(--jse-shadow-sm);
  }

  .jse-btn-primary:hover {
    background-color: var(--jse-primary-hover);
  }

  .jse-btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
  }

  .jse-btn-secondary {
    background-color: transparent;
    color: var(--jse-text-secondary);
    border: 1px dashed var(--jse-border);
  }

  .jse-btn-secondary:hover {
    background-color: var(--jse-bg-secondary);
    border-color: var(--jse-text-tertiary);
    color: var(--jse-text-primary);
  }

  .jse-btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    padding: 0;
    color: var(--jse-text-tertiary);
    background: transparent;
    border: none;
    border-radius: var(--jse-radius);
    cursor: pointer;
    transition: color 0.2s;
  }

  .jse-btn-icon:hover {
    color: var(--jse-text-primary);
    background-color: var(--jse-bg-secondary);
  }

  .jse-btn-delete:hover {
    color: var(--jse-danger);
    background-color: var(--jse-danger-bg);
  }

  /* Node Structure */
  .jse-node-container {
    margin-left: 1rem;
    padding-left: 1rem;
    border-left: 2px solid var(--jse-border);
    position: relative;
  }

  .jse-node-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    padding: 0.5rem 0;
  }

  .jse-node-toggle {
    position: absolute;
    left: -1rem;
    width: 1rem;
    height: 1rem;
    transform: translateX(-50%);
    background-color: var(--jse-bg);
    border: 1px solid var(--jse-border);
    border-radius: 50%;
    color: var(--jse-text-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 10;
  }

  .jse-node-toggle:hover {
    color: var(--jse-primary);
    border-color: var(--jse-primary);
  }

  .jse-node-toggle.jse-collapsed {
     transform: translateX(-50%) rotate(-90deg);
  }

  .jse-type-select {
    background-color: var(--jse-bg-secondary);
    border: 1px solid transparent;
    border-radius: var(--jse-radius);
    padding: 0.375rem 0.75rem;
    font-size: 0.875rem;
    color: var(--jse-text-primary);
    cursor: pointer;
  }

  .jse-type-select:hover {
    background-color: var(--jse-bg-tertiary);
  }

  .jse-type-select:focus {
    outline: none;
    box-shadow: 0 0 0 2px var(--jse-primary);
  }

  .jse-title-input {
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--jse-radius);
    padding: 0.375rem 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--jse-text-primary);
    width: 12rem;
    transition: border-color 0.2s;
  }

  .jse-title-input:hover, .jse-title-input:focus {
    border-color: var(--jse-border);
    background-color: var(--jse-bg);
  }

  .jse-title-input:focus {
    border-color: var(--jse-border-focus);
    outline: none;
  }

  .jse-description-container {
    flex: 1;
    min-width: 200px;
  }

  .jse-description-collapsed, .jse-description-expanded {
    display: flex;
    gap: 0.5rem;
    align-items: flex-start;
  }

  .jse-description-input {
    flex: 1;
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--jse-radius);
    padding: 0.375rem 0.5rem;
    font-size: 0.875rem;
    color: var(--jse-text-secondary);
    transition: all 0.2s;
  }

  .jse-description-input:hover, .jse-description-input:focus {
    border-color: var(--jse-border);
    color: var(--jse-text-primary);
  }

  .jse-description-input:focus {
    border-color: var(--jse-border-focus);
    outline: none;
  }

  .jse-description-textarea {
    flex: 1;
    width: 100%;
    min-height: 4rem;
    background-color: var(--jse-bg);
    border: 1px solid var(--jse-border);
    border-radius: var(--jse-radius);
    padding: 0.5rem;
    font-family: inherit;
    font-size: 0.875rem;
    color: var(--jse-text-primary);
    resize: vertical;
  }

  .jse-description-textarea:focus {
    outline: none;
    border-color: var(--jse-border-focus);
  }

  .jse-constraints-container {
    background-color: var(--jse-bg-secondary);
    border: 1px solid var(--jse-border);
    border-radius: var(--jse-radius);
    padding: 1rem;
    margin-bottom: 1rem;
  }

  .jse-constraints-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 1rem;
  }

  .jse-constraint-field {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
  }

  .jse-constraint-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--jse-text-tertiary);
  }

  .jse-constraint-input {
    background-color: var(--jse-bg);
    border: 1px solid var(--jse-border);
    border-radius: var(--jse-radius);
    padding: 0.375rem 0.5rem;
    font-size: 0.875rem;
    color: var(--jse-text-primary);
    width: 100%;
  }

  .jse-constraint-input:focus {
    outline: none;
    border-color: var(--jse-border-focus);
  }

  .jse-input-error {
    border-color: var(--jse-danger);
  }

  .jse-error-message {
    font-size: 0.75rem;
    color: var(--jse-danger);
  }

  .jse-btn-toggle-constraints.jse-active {
    color: var(--jse-primary);
    background-color: var(--jse-bg-secondary);
  }

  .jse-enum-container {
    grid-column: 1 / -1;
    padding-top: 1rem;
    margin-top: 0.5rem;
    border-top: 1px dashed var(--jse-border);
  }

  .jse-enum-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    padding-bottom: 0.25rem;
  }

  .jse-enum-error {
    display: inline-block;
    margin-left: 0.5rem;
  }

  .jse-enum-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.5rem;
  }

  .jse-enum-item {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    background-color: var(--jse-bg);
    border: 1px solid var(--jse-border);
    border-radius: var(--jse-radius);
    padding: 0.25rem 0.5rem;
  }

  .jse-enum-input {
    border: none;
    background: transparent;
    color: var(--jse-text-primary);
    font-size: 0.875rem;
    width: auto;
    min-width: 3rem;
  }

  .jse-enum-input:focus {
    outline: none;
  }

  .jse-properties-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
  }

  .jse-object-controls {
    padding: 0.5rem;
    background-color: var(--jse-bg-secondary);
    border-radius: var(--jse-radius);
    margin-bottom: 0.5rem;
  }

  .jse-strict-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--jse-text-secondary);
    cursor: pointer;
  }

  .jse-property-item {
    background-color: var(--jse-bg);
    border: 1px solid var(--jse-border);
    border-radius: var(--jse-radius);
    padding: 0.75rem;
    position: relative;
  }

  .jse-property-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
  }

  .jse-property-content {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 0.75rem;
  }

  .jse-property-key-input {
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--jse-radius);
    padding: 0.25rem 0.5rem;
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--jse-text-primary);
    transition: all 0.2s;
  }

  .jse-property-key-input:hover {
    background-color: var(--jse-bg-secondary);
  }

  .jse-property-key-input:focus {
    outline: none;
    background-color: var(--jse-bg);
    border-color: var(--jse-border-focus);
  }

  .jse-required-checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--jse-text-tertiary);
    cursor: pointer;
    text-transform: uppercase;
  }

  .jse-required-checkbox-label:hover {
    color: var(--jse-text-primary);
  }

  .jse-array-items-container, .jse-logic-container {
    background-color: var(--jse-bg-secondary);
    border: 1px solid var(--jse-border);
    border-radius: var(--jse-radius);
    padding: 1rem;
    margin-top: 1rem;
  }

  .jse-logic-header, .jse-array-items-header {
    margin-bottom: 1rem;
  }

  .jse-logic-content {
    display: flex;
    flex-direction: column;
    gap: 1rem;
  }

  .jse-logic-branch {
    background-color: var(--jse-bg);
    border: 1px solid var(--jse-border);
    border-radius: var(--jse-radius);
    padding: 1rem;
  }

  .jse-logic-branch-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 0.5rem;
    border-bottom: 1px dashed var(--jse-border);
    margin-bottom: 0.5rem;
  }

  .jse-logic-branch-label {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--jse-text-tertiary);
    text-transform: uppercase;
  }

  /* Preview Panel */
  .jse-preview-panel {
    background-color: var(--jse-bg-secondary);
    border: 1px solid var(--jse-border);
    border-radius: var(--jse-radius);
    overflow: hidden;
  }

  .jse-preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    background-color: var(--jse-bg-tertiary);
    border-bottom: 1px solid var(--jse-border);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--jse-text-primary);
  }

  .jse-preview-content {
    padding: 1rem;
    overflow: auto;
    max-height: 80vh;
  }

  .jse-code-block {
    margin: 0;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    font-size: 0.875rem;
    color: var(--jse-text-primary);
    white-space: pre-wrap;
  }

  .jse-btn-copy {
    background-color: var(--jse-bg);
    border: 1px solid var(--jse-border);
    border-radius: var(--jse-radius);
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--jse-text-secondary);
    cursor: pointer;
    transition: all 0.2s;
  }

  .jse-btn-copy:hover {
    background-color: var(--jse-bg-secondary);
    color: var(--jse-text-primary);
  }

  .jse-btn-copy.jse-copied {
    background-color: var(--jse-success);
    border-color: var(--jse-success);
    color: #ffffff;
  }

  /* Utilities */
  .jse-icon {
    width: 1.25rem;
    height: 1.25rem;
  }

  .jse-icon-sm {
    width: 1rem;
    height: 1rem;
  }

  .jse-icon-xs {
    width: 0.875rem;
    height: 0.875rem;
  }

  .jse-icon-circle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 1.5rem;
    height: 1.5rem;
    border-radius: 50%;
    background-color: var(--jse-bg-tertiary);
    color: var(--jse-text-secondary);
  }

  .jse-icon-circle-logic {
    background-color: var(--jse-danger-bg);
    color: var(--jse-danger);
  }

  .jse-add-property-container {
    margin-top: 0.5rem;
    display: flex;
    justify-content: center;
  }
}