/**
 * Template Builder Styles
 * Drag and drop template builder interface
 */

/* ==========================================================================
   Variables
   ========================================================================== */

:root {
    --tb-primary: #3b82f6;
    --tb-success: #10b981;
    --tb-danger: #ef4444;
    --tb-warning: #f59e0b;
    --tb-secondary: #6b7280;

    --tb-bg: #ffffff;
    --tb-bg-secondary: #f9fafb;
    --tb-bg-tertiary: #f3f4f6;
    --tb-border: #e5e7eb;
    --tb-text: #111827;
    --tb-text-secondary: #6b7280;

    --tb-header-height: 60px;
    --tb-sidebar-width: 280px;
    --tb-toolbar-height: 50px;

    --tb-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --tb-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --tb-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);

    --tb-radius: 6px;
    --tb-radius-sm: 4px;
    --tb-radius-lg: 8px;

    --tb-transition: all 0.2s ease;
}

/* Dark Mode */
[data-theme*="dark"] .template-builder,
.template-builder[data-theme*="dark"] {
    --tb-bg: #1f2937;
    --tb-bg-secondary: #111827;
    --tb-bg-tertiary: #374151;
    --tb-border: #374151;
    --tb-text: #f9fafb;
    --tb-text-secondary: #9ca3af;
}

/* ==========================================================================
   Layout
   ========================================================================== */

.template-builder {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    background: var(--tb-bg);
    color: var(--tb-text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    z-index: 9999;
}

.tb-header {
    height: var(--tb-header-height);
    background: var(--tb-bg-secondary);
    border-bottom: 1px solid var(--tb-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    gap: 20px;
}

.tb-header-left,
.tb-header-center,
.tb-header-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.tb-header-left {
    flex: 1;
}

.tb-header-center {
    flex: 0 0 auto;
}

.tb-header-right {
    flex: 1;
    justify-content: flex-end;
}

.tb-main {
    flex: 1;
    display: flex;
    overflow: hidden;
}

/* ==========================================================================
   Sidebars
   ========================================================================== */

.tb-sidebar {
    width: var(--tb-sidebar-width);
    background: var(--tb-bg-secondary);
    border-right: 1px solid var(--tb-border);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: var(--tb-transition);
}

.tb-sidebar-right {
    border-right: none;
    border-left: 1px solid var(--tb-border);
}

.tb-sidebar.collapsed {
    width: 0;
    border: none;
}

.tb-sidebar-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--tb-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.tb-sidebar-header h3 {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
}

.tb-sidebar-toggle {
    background: none;
    border: none;
    color: var(--tb-text-secondary);
    cursor: pointer;
    padding: 4px;
    border-radius: var(--tb-radius-sm);
    transition: var(--tb-transition);
}

.tb-sidebar-toggle:hover {
    background: var(--tb-bg-tertiary);
    color: var(--tb-text);
}

.tb-sidebar-content {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
}

/* ==========================================================================
   Canvas
   ========================================================================== */

.tb-canvas-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--tb-bg-tertiary);
    overflow: hidden;
}

.tb-canvas-toolbar {
    height: var(--tb-toolbar-height);
    background: var(--tb-bg-secondary);
    border-bottom: 1px solid var(--tb-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
}

.tb-zoom-controls {
    display: flex;
    align-items: center;
    gap: 8px;
}

.tb-zoom-level {
    min-width: 50px;
    text-align: center;
    font-size: 14px;
    color: var(--tb-text-secondary);
}

.tb-canvas-options {
    display: flex;
    gap: 16px;
}

.tb-canvas-wrapper {
    flex: 1;
    overflow: auto;
    padding: 40px;
}

.tb-canvas {
    background: white;
    min-height: 100%;
    margin: 0 auto;
    box-shadow: var(--tb-shadow-lg);
    position: relative;
    transition: width 0.3s ease;
}

.tb-canvas[data-device="desktop"] {
    width: 100%;
    max-width: 1400px;
}

.tb-canvas[data-device="tablet"] {
    width: 768px;
}

.tb-canvas[data-device="mobile"] {
    width: 375px;
}

.tb-canvas.show-grid {
    background-image:
        linear-gradient(rgba(0, 0, 0, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 0, 0, 0.03) 1px, transparent 1px);
    background-size: 20px 20px;
}

.tb-sections-container {
    min-height: 400px;
}

/* Drop Hint */
.tb-drop-hint {
    padding: 80px 40px;
    text-align: center;
    color: var(--tb-text-secondary);
    border: 2px dashed var(--tb-border);
    border-radius: var(--tb-radius-lg);
    margin: 40px;
}

.tb-drop-hint-content i {
    font-size: 48px;
    margin-bottom: 16px;
    opacity: 0.5;
}

.tb-drop-hint-content p {
    margin: 0;
    font-size: 16px;
}

.tb-drop-hint.hidden {
    display: none;
}

/* ==========================================================================
   Sections
   ========================================================================== */

.tb-section {
    position: relative;
    padding: 20px;
    margin: 20px 0;
    border: 2px dashed transparent;
    transition: var(--tb-transition);
}

.tb-section:hover {
    border-color: var(--tb-border);
}

.tb-section.selected {
    border-color: var(--tb-primary);
    background: rgba(59, 130, 246, 0.05);
}

.tb-section.drag-over {
    border-color: var(--tb-success);
    background: rgba(16, 185, 129, 0.05);
}

.tb-section-controls {
    position: absolute;
    top: -12px;
    right: 10px;
    background: white;
    border: 1px solid var(--tb-border);
    border-radius: var(--tb-radius);
    display: none;
    gap: 4px;
    padding: 4px;
    box-shadow: var(--tb-shadow);
}

.tb-section:hover .tb-section-controls,
.tb-section.selected .tb-section-controls {
    display: flex;
}

.tb-columns {
    display: grid;
    gap: 20px;
}

/* ==========================================================================
   Blocks (Components)
   ========================================================================== */

.tb-block {
    position: relative;
    min-height: 50px;
    border: 2px dashed transparent;
    border-radius: var(--tb-radius);
    transition: var(--tb-transition);
}

.tb-block:hover {
    border-color: var(--tb-border);
}

.tb-block.selected {
    border-color: var(--tb-primary);
    background: rgba(59, 130, 246, 0.05);
}

.tb-block.dragging {
    opacity: 0.5;
}

.tb-block-controls {
    position: absolute;
    top: -12px;
    right: 10px;
    background: white;
    border: 1px solid var(--tb-border);
    border-radius: var(--tb-radius);
    display: none;
    gap: 4px;
    padding: 4px;
    box-shadow: var(--tb-shadow);
    z-index: 10;
}

.tb-block:hover .tb-block-controls,
.tb-block.selected .tb-block-controls {
    display: flex;
}

/* ==========================================================================
   Components List (Sidebar)
   ========================================================================== */

.tb-search-box {
    padding: 16px;
    position: relative;
}

.tb-search-box input {
    width: 100%;
    padding: 8px 12px 8px 36px;
    border: 1px solid var(--tb-border);
    border-radius: var(--tb-radius);
    background: var(--tb-bg);
    color: var(--tb-text);
    font-size: 14px;
}

.tb-search-box i {
    position: absolute;
    left: 28px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--tb-text-secondary);
}

.tb-component-categories {
    padding: 0 16px 16px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tb-category-btn {
    padding: 6px 12px;
    border: 1px solid var(--tb-border);
    background: var(--tb-bg);
    color: var(--tb-text);
    border-radius: var(--tb-radius);
    font-size: 13px;
    cursor: pointer;
    transition: var(--tb-transition);
}

.tb-category-btn:hover {
    background: var(--tb-bg-tertiary);
}

.tb-category-btn.active {
    background: var(--tb-primary);
    border-color: var(--tb-primary);
    color: white;
}

.tb-components-list {
    padding: 0 16px 16px;
}

.tb-component-item {
    padding: 12px;
    border: 1px solid var(--tb-border);
    border-radius: var(--tb-radius);
    margin-bottom: 12px;
    cursor: grab;
    background: var(--tb-bg);
    transition: var(--tb-transition);
}

.tb-component-item:hover {
    border-color: var(--tb-primary);
    box-shadow: var(--tb-shadow);
}

.tb-component-item:active {
    cursor: grabbing;
}

.tb-component-item.dragging {
    opacity: 0.5;
}

.tb-component-thumb {
    width: 100%;
    height: 100px;
    background: var(--tb-bg-tertiary);
    border-radius: var(--tb-radius-sm);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.tb-component-thumb img {
    max-width: 100%;
    max-height: 100%;
}

.tb-component-thumb i {
    font-size: 32px;
    color: var(--tb-text-secondary);
}

.tb-component-name {
    font-size: 14px;
    font-weight: 500;
    margin: 0 0 4px;
}

.tb-component-desc {
    font-size: 12px;
    color: var(--tb-text-secondary);
    margin: 0;
}

/* ==========================================================================
   Properties Panel
   ========================================================================== */

.tb-no-selection {
    padding: 40px 20px;
    text-align: center;
    color: var(--tb-text-secondary);
}

.tb-no-selection i {
    font-size: 48px;
    margin-bottom: 12px;
    opacity: 0.5;
}

.tb-properties-section {
    padding: 20px;
}

.tb-properties-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.tb-properties-header h4 {
    margin: 0;
    font-size: 14px;
    font-weight: 600;
}

/* Form Elements */
.tb-form-group {
    margin-bottom: 16px;
}

.tb-form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 6px;
    color: var(--tb-text);
}

.tb-input,
.tb-select,
.tb-textarea {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--tb-border);
    border-radius: var(--tb-radius);
    background: var(--tb-bg);
    color: var(--tb-text);
    font-size: 14px;
    font-family: inherit;
    transition: var(--tb-transition);
}

.tb-input:focus,
.tb-select:focus,
.tb-textarea:focus {
    outline: none;
    border-color: var(--tb-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.tb-input-sm {
    padding: 6px 8px;
    font-size: 13px;
}

.tb-textarea {
    resize: vertical;
    min-height: 80px;
}

input[type="color"].tb-input {
    height: 40px;
    padding: 4px;
}

.tb-checkbox {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    cursor: pointer;
    user-select: none;
}

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

.tb-spacing-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

/* Collapsible */
.tb-collapsible {
    border-top: 1px solid var(--tb-border);
    margin-top: 16px;
    padding-top: 16px;
}

.tb-collapsible-header {
    width: 100%;
    padding: 8px 0;
    background: none;
    border: none;
    text-align: left;
    font-size: 13px;
    font-weight: 600;
    color: var(--tb-text);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
}

.tb-collapsible-header i {
    transition: transform 0.2s;
}

.tb-collapsible.open .tb-collapsible-header i {
    transform: rotate(180deg);
}

.tb-collapsible-content {
    display: none;
    padding-top: 12px;
}

.tb-collapsible.open .tb-collapsible-content {
    display: block;
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.tb-btn {
    padding: 8px 16px;
    border: 1px solid transparent;
    border-radius: var(--tb-radius);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: var(--tb-transition);
    white-space: nowrap;
}

.tb-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.tb-btn-primary {
    background: var(--tb-primary);
    color: white;
}

.tb-btn-primary:hover:not(:disabled) {
    background: #2563eb;
}

.tb-btn-success {
    background: var(--tb-success);
    color: white;
}

.tb-btn-success:hover:not(:disabled) {
    background: #059669;
}

.tb-btn-danger {
    background: var(--tb-danger);
    color: white;
}

.tb-btn-danger:hover:not(:disabled) {
    background: #dc2626;
}

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

.tb-btn-secondary:hover:not(:disabled) {
    background: var(--tb-bg-secondary);
}

.tb-btn-icon {
    padding: 8px;
    min-width: 36px;
    justify-content: center;
}

.tb-btn-sm {
    padding: 6px 12px;
    font-size: 13px;
}

.tb-btn i {
    font-size: 16px;
}

/* Device Preview Buttons */
.tb-device-preview {
    display: flex;
    gap: 4px;
    background: var(--tb-bg-tertiary);
    padding: 4px;
    border-radius: var(--tb-radius);
}

.tb-device-btn {
    padding: 8px 12px;
    background: transparent;
    border: none;
    color: var(--tb-text-secondary);
    cursor: pointer;
    border-radius: var(--tb-radius-sm);
    transition: var(--tb-transition);
}

.tb-device-btn:hover {
    color: var(--tb-text);
}

.tb-device-btn.active {
    background: var(--tb-primary);
    color: white;
}

/* Template Name Input */
.tb-template-name-input {
    padding: 6px 12px;
    border: 1px solid transparent;
    border-radius: var(--tb-radius);
    background: var(--tb-bg-tertiary);
    color: var(--tb-text);
    font-size: 15px;
    font-weight: 500;
    max-width: 300px;
    transition: var(--tb-transition);
}

.tb-template-name-input:focus {
    outline: none;
    border-color: var(--tb-primary);
    background: var(--tb-bg);
}

/* ==========================================================================
   Modal
   ========================================================================== */

.tb-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 99999;
}

.tb-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
}

.tb-modal-content {
    position: relative;
    background: var(--tb-bg);
    max-width: 500px;
    margin: 100px auto;
    border-radius: var(--tb-radius-lg);
    box-shadow: var(--tb-shadow-lg);
}

.tb-modal-large {
    max-width: 90vw;
}

.tb-modal-header {
    padding: 20px;
    border-bottom: 1px solid var(--tb-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.tb-modal-header h3 {
    margin: 0;
    font-size: 18px;
}

.tb-modal-close {
    background: none;
    border: none;
    color: var(--tb-text-secondary);
    cursor: pointer;
    padding: 4px;
    border-radius: var(--tb-radius-sm);
    transition: var(--tb-transition);
}

.tb-modal-close:hover {
    background: var(--tb-bg-tertiary);
    color: var(--tb-text);
}

.tb-modal-body {
    padding: 20px;
}

.tb-modal-footer {
    padding: 20px;
    border-top: 1px solid var(--tb-border);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* ==========================================================================
   Loading
   ========================================================================== */

.tb-loading {
    padding: 40px;
    text-align: center;
    color: var(--tb-text-secondary);
    font-size: 14px;
}

/* ==========================================================================
   Utilities
   ========================================================================== */

.hidden {
    display: none !important;
}

/* Drag and Drop */
.tb-dragging {
    opacity: 0.5;
}

.tb-drag-placeholder {
    border: 2px dashed var(--tb-primary);
    background: rgba(59, 130, 246, 0.05);
    border-radius: var(--tb-radius);
    min-height: 100px;
    margin: 10px 0;
}

/* Scrollbar */
.tb-sidebar-content::-webkit-scrollbar,
.tb-canvas-wrapper::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

.tb-sidebar-content::-webkit-scrollbar-track,
.tb-canvas-wrapper::-webkit-scrollbar-track {
    background: var(--tb-bg-secondary);
}

.tb-sidebar-content::-webkit-scrollbar-thumb,
.tb-canvas-wrapper::-webkit-scrollbar-thumb {
    background: var(--tb-border);
    border-radius: 4px;
}

.tb-sidebar-content::-webkit-scrollbar-thumb:hover,
.tb-canvas-wrapper::-webkit-scrollbar-thumb:hover {
    background: var(--tb-text-secondary);
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 1200px) {
    .tb-sidebar {
        width: 240px;
    }
}

@media (max-width: 768px) {
    .tb-header {
        padding: 0 12px;
    }

    .tb-sidebar {
        position: absolute;
        top: var(--tb-header-height);
        bottom: 0;
        z-index: 100;
        box-shadow: var(--tb-shadow-lg);
    }

    .tb-sidebar-left {
        left: 0;
    }

    .tb-sidebar-right {
        right: 0;
    }

    .tb-canvas-wrapper {
        padding: 20px;
    }
}