/**
 * VSM Element AI Generator Styles
 *
 * Styles for the AI content generation modal and related UI elements.
 * Supports both light and dark mode in Contao 5.x backend.
 */

/* ============================================================================
   CSS Variables (with dark mode support)
   ============================================================================ */
:root {
    --vsm-ai-primary: #0066cc;
    --vsm-ai-primary-hover: #0052a3;
    --vsm-ai-success: #28a745;
    --vsm-ai-warning: #ffc107;
    --vsm-ai-error: #dc3545;
    --vsm-ai-bg: #ffffff;
    --vsm-ai-bg-secondary: #f8f9fa;
    --vsm-ai-border: #dee2e6;
    --vsm-ai-text: #212529;
    --vsm-ai-text-muted: #6c757d;
    --vsm-ai-overlay: rgba(0, 0, 0, 0.5);
    --vsm-ai-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    --vsm-ai-code-bg: #f4f4f4;
}

[data-color-scheme="dark"] {
    --vsm-ai-primary: #4da6ff;
    --vsm-ai-primary-hover: #66b3ff;
    --vsm-ai-success: #48c774;
    --vsm-ai-warning: #ffdd57;
    --vsm-ai-error: #f14668;
    --vsm-ai-bg: #2d2d2d;
    --vsm-ai-bg-secondary: #3a3a3a;
    --vsm-ai-border: #4a4a4a;
    --vsm-ai-text: #e0e0e0;
    --vsm-ai-text-muted: #a0a0a0;
    --vsm-ai-overlay: rgba(0, 0, 0, 0.7);
    --vsm-ai-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
    --vsm-ai-code-bg: #1e1e1e;
}

/* ============================================================================
   Modal Overlay
   ============================================================================ */
.vsm-ai-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--vsm-ai-overlay);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    animation: vsm-ai-fade-in 0.2s ease-out;
}

@keyframes vsm-ai-fade-in {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* ============================================================================
   Modal Container
   ============================================================================ */
.vsm-ai-modal {
    background: var(--vsm-ai-bg);
    border-radius: 8px;
    box-shadow: var(--vsm-ai-shadow);
    max-width: 700px;
    width: 90%;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    animation: vsm-ai-slide-up 0.3s ease-out;
}

@keyframes vsm-ai-slide-up {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================================================
   Modal Header
   ============================================================================ */
.vsm-ai-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--vsm-ai-border);
}

.vsm-ai-modal-header h3 {
    margin: 0;
    font-size: 18px;
    font-weight: 600;
    color: var(--vsm-ai-text);
}

.vsm-ai-modal-close {
    background: none;
    border: none;
    font-size: 24px;
    color: var(--vsm-ai-text-muted);
    cursor: pointer;
    padding: 0;
    line-height: 1;
    transition: color 0.2s;
}

.vsm-ai-modal-close:hover {
    color: var(--vsm-ai-error);
}

/* ============================================================================
   Modal Content
   ============================================================================ */
.vsm-ai-modal-content {
    padding: 20px;
    overflow-y: auto;
    flex: 1;
}

/* ============================================================================
   Loading State
   ============================================================================ */
.vsm-ai-loading {
    text-align: center;
    padding: 40px 20px;
}

.vsm-ai-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--vsm-ai-border);
    border-top-color: var(--vsm-ai-primary);
    border-radius: 50%;
    margin: 0 auto 16px;
    animation: vsm-ai-spin 0.8s linear infinite;
}

@keyframes vsm-ai-spin {
    to {
        transform: rotate(360deg);
    }
}

/* ============================================================================
   Form Styles
   ============================================================================ */
.vsm-ai-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.vsm-ai-section {
    border-bottom: 1px solid var(--vsm-ai-border);
    padding-bottom: 16px;
}

.vsm-ai-section:last-of-type {
    border-bottom: none;
}

.vsm-ai-section h4 {
    margin: 0 0 12px 0;
    font-size: 14px;
    font-weight: 600;
    color: var(--vsm-ai-text);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.vsm-ai-info-box {
    background: var(--vsm-ai-bg-secondary);
    border-radius: 6px;
    padding: 12px 16px;
}

.vsm-ai-info-box p {
    margin: 0 0 8px 0;
    font-size: 13px;
    color: var(--vsm-ai-text);
    line-height: 1.5;
}

.vsm-ai-info-box p:last-child {
    margin-bottom: 0;
}

.vsm-ai-info-box code {
    background: var(--vsm-ai-code-bg);
    padding: 2px 6px;
    border-radius: 3px;
    font-family: 'SF Mono', Monaco, Consolas, monospace;
    font-size: 12px;
}

/* ============================================================================
   Form Fields
   ============================================================================ */
.vsm-ai-field {
    margin-bottom: 16px;
}

.vsm-ai-field:last-child {
    margin-bottom: 0;
}

.vsm-ai-field label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--vsm-ai-text);
    margin-bottom: 6px;
}

.vsm-ai-field select,
.vsm-ai-field textarea,
.vsm-ai-field input[type="text"] {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--vsm-ai-border);
    border-radius: 6px;
    background: var(--vsm-ai-bg);
    color: var(--vsm-ai-text);
    font-size: 14px;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.vsm-ai-field select:focus,
.vsm-ai-field textarea:focus,
.vsm-ai-field input[type="text"]:focus {
    outline: none;
    border-color: var(--vsm-ai-primary);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.15);
}

.vsm-ai-field textarea {
    resize: vertical;
    font-family: inherit;
}

.vsm-ai-checkbox label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.vsm-ai-checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

/* Image Settings (conditional section) */
.vsm-ai-image-settings {
    margin-top: 12px;
    padding: 16px;
    background: var(--vsm-ai-bg-secondary);
    border-radius: 6px;
    border-left: 3px solid var(--vsm-ai-primary);
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.vsm-ai-image-settings .vsm-ai-field {
    margin-bottom: 0;
}

/* Folder Selector (conditional field) */
.vsm-ai-folder-selector {
    margin-top: 12px;
    padding: 12px;
    background: var(--vsm-ai-bg-secondary);
    border-radius: 6px;
    border-left: 3px solid var(--vsm-ai-primary);
}

.vsm-ai-field-hint {
    margin: 8px 0 0 0;
    font-size: 12px;
    color: var(--vsm-ai-text-muted);
    line-height: 1.4;
}

/* Folder Picker Tree */
.vsm-ai-folder-picker {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.vsm-ai-folder-search {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--vsm-ai-border);
    border-radius: 4px;
    background: var(--vsm-ai-bg);
    color: var(--vsm-ai-text);
    font-size: 13px;
}

.vsm-ai-folder-search:focus {
    outline: none;
    border-color: var(--vsm-ai-primary);
}

.vsm-ai-folder-tree {
    max-height: 240px;
    overflow-y: auto;
    border: 1px solid var(--vsm-ai-border);
    border-radius: 4px;
    background: var(--vsm-ai-bg);
}

.vsm-ai-folder-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    font-size: 13px;
    color: var(--vsm-ai-text);
    border-bottom: 1px solid var(--vsm-ai-border);
    user-select: none;
}

.vsm-ai-folder-row:last-child > .vsm-ai-folder-item {
    border-bottom: none;
}

.vsm-ai-folder-item.vsm-ai-has-children {
    cursor: pointer;
}

.vsm-ai-folder-item.vsm-ai-has-children:hover {
    background: var(--vsm-ai-bg-secondary);
}

.vsm-ai-folder-item.vsm-ai-has-children .vsm-ai-folder-name::before {
    content: '▸ ';
    color: var(--vsm-ai-text-muted);
    font-size: 10px;
}

.vsm-ai-folder-item.vsm-ai-has-children.vsm-ai-expanded .vsm-ai-folder-name::before {
    content: '▾ ';
}

.vsm-ai-folder-name {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.vsm-ai-folder-select {
    font-size: 11px;
    color: var(--vsm-ai-primary);
    cursor: pointer;
    padding: 2px 8px;
    border-radius: 3px;
    opacity: 0;
    transition: opacity 0.15s;
}

.vsm-ai-folder-item:hover .vsm-ai-folder-select {
    opacity: 1;
}

.vsm-ai-folder-select:hover {
    background: var(--vsm-ai-primary);
    color: white;
}

.vsm-ai-folder-item.vsm-ai-folder-selected {
    background: var(--vsm-ai-primary);
    color: white;
}

.vsm-ai-folder-item.vsm-ai-folder-selected .vsm-ai-folder-name::before {
    color: rgba(255,255,255,0.7);
}

.vsm-ai-folder-item.vsm-ai-folder-selected .vsm-ai-folder-select {
    opacity: 1;
    color: rgba(255,255,255,0.9);
}

.vsm-ai-folder-item.vsm-ai-folder-selected .vsm-ai-folder-select:hover {
    background: rgba(255,255,255,0.2);
    color: white;
}

.vsm-ai-folder-empty {
    padding: 20px;
    text-align: center;
    color: var(--vsm-ai-text-muted);
    font-size: 13px;
}

.vsm-ai-selected-folder {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: var(--vsm-ai-bg);
    border: 1px solid var(--vsm-ai-border);
    border-radius: 4px;
    font-size: 13px;
}

.vsm-ai-selected-label {
    color: var(--vsm-ai-text-muted);
}

.vsm-ai-selected-path {
    color: var(--vsm-ai-text-muted);
    font-style: italic;
}

.vsm-ai-selected-path.vsm-ai-has-selection {
    color: var(--vsm-ai-text);
    font-style: normal;
    font-weight: 500;
}

/* ============================================================================
   Actions
   ============================================================================ */
.vsm-ai-actions {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    padding-top: 16px;
    border-top: 1px solid var(--vsm-ai-border);
    margin-top: 8px;
}

.vsm-ai-actions .tl_submit {
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 500;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
}

.vsm-ai-actions .tl_submit:not(.secondary) {
    background: var(--vsm-ai-primary);
    color: white;
    border: none;
}

.vsm-ai-actions .tl_submit:not(.secondary):hover {
    background: var(--vsm-ai-primary-hover);
}

.vsm-ai-actions .tl_submit.secondary {
    background: transparent;
    color: var(--vsm-ai-text-muted);
    border: 1px solid var(--vsm-ai-border);
}

.vsm-ai-actions .tl_submit.secondary:hover {
    background: var(--vsm-ai-bg-secondary);
    color: var(--vsm-ai-text);
}

/* ============================================================================
   Progress
   ============================================================================ */
.vsm-ai-progress {
    text-align: center;
    padding: 20px;
}

.vsm-ai-progress h4 {
    margin: 0 0 20px 0;
    color: var(--vsm-ai-text);
}

.vsm-ai-progress-bar-container {
    background: var(--vsm-ai-bg-secondary);
    border-radius: 10px;
    height: 20px;
    overflow: hidden;
    margin-bottom: 16px;
}

.vsm-ai-progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--vsm-ai-primary), var(--vsm-ai-primary-hover));
    border-radius: 10px;
    transition: width 0.3s ease;
}

.vsm-ai-progress-text {
    color: var(--vsm-ai-text-muted);
    font-size: 13px;
    margin-bottom: 20px;
}

/* ============================================================================
   Success State
   ============================================================================ */
.vsm-ai-success {
    text-align: center;
}

.vsm-ai-success h4 {
    color: var(--vsm-ai-success);
    margin: 0 0 16px 0;
}

/* Image Previews */
.vsm-ai-image-previews {
    margin-bottom: 16px;
    text-align: left;
}

.vsm-ai-image-previews h5 {
    margin: 0 0 12px 0;
    font-size: 13px;
    font-weight: 600;
    color: var(--vsm-ai-text);
}

.vsm-ai-image-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.vsm-ai-image-preview-item {
    display: flex;
    flex-direction: column;
    gap: 6px;
    background: var(--vsm-ai-bg-secondary);
    border-radius: 6px;
    padding: 8px;
    max-width: 200px;
}

.vsm-ai-image-preview-item img {
    width: 100%;
    height: auto;
    border-radius: 4px;
    max-height: 150px;
    object-fit: cover;
}

.vsm-ai-image-field {
    font-size: 11px;
    color: var(--vsm-ai-text-muted);
    text-align: center;
}

.vsm-ai-image-error {
    display: block;
    padding: 20px;
    text-align: center;
    color: var(--vsm-ai-text-muted);
    font-size: 11px;
}

.vsm-ai-result-preview {
    background: var(--vsm-ai-code-bg);
    border: 1px solid var(--vsm-ai-border);
    border-radius: 6px;
    padding: 16px;
    max-height: 200px;
    overflow: auto;
    text-align: left;
    margin-bottom: 20px;
}

.vsm-ai-result-preview pre {
    margin: 0;
    white-space: pre-wrap;
    word-break: break-word;
    font-family: 'SF Mono', Monaco, Consolas, monospace;
    font-size: 12px;
    color: var(--vsm-ai-text);
}

/* ============================================================================
   Error & Warning States
   ============================================================================ */
.vsm-ai-error,
.vsm-ai-warning {
    text-align: center;
    padding: 20px;
}

.vsm-ai-error h4 {
    color: var(--vsm-ai-error);
    margin: 0 0 12px 0;
}

.vsm-ai-warning h4 {
    color: var(--vsm-ai-warning);
    margin: 0 0 12px 0;
}

.vsm-ai-error p,
.vsm-ai-warning p {
    color: var(--vsm-ai-text-muted);
    margin: 0 0 20px 0;
}

/* ============================================================================
   Operation Button in List View
   ============================================================================ */
.vsm-ai-generate-btn {
    display: inline-block;
    padding: 2px;
    opacity: 0.7;
    transition: opacity 0.2s;
}

.vsm-ai-generate-btn:hover {
    opacity: 1;
}

/* ============================================================================
   Button in Edit Form (Widget)
   ============================================================================ */
.vsm-ai-generate-widget {
    background: var(--vsm-ai-bg-secondary);
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 16px;
}

.vsm-ai-generate-widget h3 {
    margin: 0 0 12px 0;
}

.vsm-ai-generate-widget h3 label {
    font-size: 14px;
    font-weight: 600;
}

.vsm-ai-generate-info {
    margin-bottom: 16px;
}

.vsm-ai-element-desc,
.vsm-ai-element-usage {
    margin: 0 0 8px 0;
    font-size: 13px;
    color: var(--vsm-ai-text);
}

.vsm-ai-generate-btn-large {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 14px;
}

.vsm-ai-icon {
    font-size: 16px;
}

.vsm-ai-disabled,
.vsm-ai-unsupported {
    opacity: 0.7;
}

/* ============================================================================
   Responsive
   ============================================================================ */
@media (max-width: 600px) {
    .vsm-ai-modal {
        width: 95%;
        max-height: 95vh;
    }

    .vsm-ai-actions {
        flex-direction: column;
    }

    .vsm-ai-actions .tl_submit {
        width: 100%;
    }
}