:root {
    --primary: #007AFF;
    --primary-dark: #0051d5;
    --secondary: #5AC8FA;
    --success: #34c759;
    --warning: #ff9500;
    --danger: #ff3b30;
    --bg-primary: #0a0a0a;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #2a2a2a;
    --bg-hover: #2a2a2a;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --border: rgba(255, 255, 255, 0.1);
    --border-hover: rgba(255, 255, 255, 0.2);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.7);
    --glow: 0 0 20px rgba(0, 122, 255, 0.5);
}

/* Light Theme Support */
html[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f7;
    --bg-tertiary: #e8e8ed;
    --bg-hover: #e8e8ed;
    --text-primary: #1d1d1f;
    --text-secondary: #6e6e73;
    --border: rgba(0, 0, 0, 0.1);
    --border-hover: rgba(0, 0, 0, 0.2);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.2);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    overflow: hidden;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Toolbar */
.toolbar {
    height: 48px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    z-index: 1000;
    flex-shrink: 0;
    -webkit-tap-highlight-color: transparent;
}

@media (max-width: 768px) {
    .toolbar {
        height: 56px;
        padding: 0 12px;
    }
    
    .toolbar-btn {
        min-height: 44px;
        min-width: 44px;
        padding: 8px 12px;
        font-size: 12px;
        touch-action: manipulation;
    }
    
    .toolbar-left,
    .toolbar-center,
    .toolbar-right {
        gap: 6px;
    }
    
    .logo {
        font-size: 13px;
    }
}

.toolbar-left,
.toolbar-center,
.toolbar-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    font-size: 14px;
    color: var(--text-primary);
}

.logo svg {
    color: var(--primary);
}

.toolbar-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

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

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

/* Main Container */
.main-container {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* Sidebars */
.sidebar-left,
.sidebar-right {
    width: 280px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

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

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

.sidebar-header h3 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.search-input {
    width: 100%;
    padding: 8px 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 13px;
    margin-top: 12px;
}

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

.close-props {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 24px;
    cursor: pointer;
    padding: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
}

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

/* Component Library */
.component-categories {
    flex: 1;
    overflow-y: auto;
    padding: 8px;
}

.category-section {
    margin-bottom: 8px;
}

.category-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    cursor: pointer;
    border-radius: 6px;
    transition: background 0.2s;
    user-select: none;
}

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

.category-header span {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.category-header svg {
    color: var(--text-secondary);
    transition: transform 0.2s;
}

.category-header.active svg {
    transform: rotate(180deg);
}

.category-content {
    display: none;
    padding: 4px;
}

.category-content.active {
    display: block;
}

.component-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    margin-bottom: 4px;
    border-radius: 6px;
    cursor: grab;
    transition: all 0.2s;
    user-select: none;
}

.component-item:hover {
    background: var(--bg-tertiary);
    transform: translateX(2px);
}

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

.component-icon {
    font-size: 18px;
    width: 24px;
    text-align: center;
}

.component-item span {
    font-size: 13px;
    color: var(--text-primary);
}

/* Canvas */
.canvas-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--bg-primary);
    overflow: hidden;
}

.canvas-toolbar {
    height: 40px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
}

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

.canvas-btn {
    padding: 4px 10px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text-secondary);
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s;
}

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

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

.zoom-level {
    font-size: 12px;
    color: var(--text-secondary);
    min-width: 50px;
    text-align: center;
}

.canvas-info {
    font-size: 12px;
    color: var(--text-secondary);
}

.canvas-wrapper {
    flex: 1;
    overflow: auto;
    position: relative;
    background: #1a1a1a;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
}

.canvas-grid {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 20px 20px;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.2s;
}

.canvas-grid.active {
    opacity: 1;
}

.canvas {
    position: relative;
    width: 1920px;
    height: 1080px;
    background: var(--bg-primary);
    margin: 40px auto;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border);
    transform-origin: top center;
}

.canvas-placeholder {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: var(--text-secondary);
}

.canvas-placeholder svg {
    margin-bottom: 16px;
}

.canvas-placeholder p {
    font-size: 14px;
}

/* Properties Panel */
.properties-content {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
}

.empty-properties {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-secondary);
    text-align: center;
}

.empty-properties svg {
    margin-bottom: 16px;
}

.empty-properties p {
    font-size: 13px;
}

.property-group {
    margin-bottom: 24px;
}

.property-group-title {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 12px;
}

.property-item {
    margin-bottom: 16px;
}

.property-label {
    display: block;
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.property-input,
.property-select,
.property-textarea {
    width: 100%;
    padding: 8px 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 13px;
    font-family: inherit;
}

.property-input:focus,
.property-select:focus,
.property-textarea:focus {
    outline: none;
    border-color: var(--primary);
}

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

.property-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 13px;
    color: var(--text-primary);
}

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

/* Canvas Elements */
.canvas-element {
    position: absolute;
    cursor: move;
    border: 2px solid transparent;
    transition: border-color 0.2s;
}

.canvas-element:hover {
    border-color: var(--primary);
}

.canvas-element.selected {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(0, 122, 255, 0.3);
}

.canvas-element .resize-handle {
    position: absolute;
    width: 8px;
    height: 8px;
    background: var(--primary);
    border: 2px solid var(--bg-primary);
    border-radius: 50%;
    cursor: nwse-resize;
    opacity: 0;
    transition: opacity 0.2s;
}

.canvas-element.selected .resize-handle {
    opacity: 1;
}

.canvas-element .resize-handle.nw { top: -4px; left: -4px; cursor: nwse-resize; }
.canvas-element .resize-handle.ne { top: -4px; right: -4px; cursor: nesw-resize; }
.canvas-element .resize-handle.sw { bottom: -4px; left: -4px; cursor: nesw-resize; }
.canvas-element .resize-handle.se { bottom: -4px; right: -4px; cursor: nwse-resize; }
.canvas-element .resize-handle.n { top: -4px; left: 50%; transform: translateX(-50%); cursor: ns-resize; }
.canvas-element .resize-handle.s { bottom: -4px; left: 50%; transform: translateX(-50%); cursor: ns-resize; }
.canvas-element .resize-handle.w { left: -4px; top: 50%; transform: translateY(-50%); cursor: ew-resize; }
.canvas-element .resize-handle.e { right: -4px; top: 50%; transform: translateY(-50%); cursor: ew-resize; }

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 10000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    width: 90%;
    max-width: 1200px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-lg);
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h3 {
    font-size: 18px;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 28px;
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
}

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

.modal-body {
    flex: 1;
    overflow: auto;
    padding: 24px;
}

.preview-canvas {
    width: 100%;
    min-height: 600px;
    max-height: 80vh;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 8px;
    position: relative;
    overflow: auto;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: 20px;
}

/* Export Options */
.export-options {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.export-option h4 {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.export-select,
.export-input {
    width: 100%;
    padding: 10px 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 14px;
    font-family: inherit;
}

.export-select:focus,
.export-input:focus {
    outline: none;
    border-color: var(--primary);
}

.export-actions {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}

.btn-primary,
.btn-secondary {
    padding: 10px 20px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
}

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

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

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

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

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #3a3a3a;
}

/* Drag Preview */
.drag-preview {
    opacity: 0.5;
    pointer-events: none;
}

/* Drop Zone */
.drop-zone {
    border: 2px dashed var(--primary);
    background: rgba(0, 122, 255, 0.1);
}

/* Multi-Select Box */
.multi-select-box {
    position: absolute;
    border: 2px dashed var(--primary);
    background: rgba(0, 122, 255, 0.1);
    pointer-events: none;
    z-index: 1000;
    display: none;
}

/* Locked Elements */
.canvas-element.locked {
    opacity: 0.6;
    cursor: not-allowed;
}

.canvas-element.locked .resize-handle {
    display: none;
}

/* Command Palette */
.command-palette {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 20000;
    align-items: center;
    justify-content: center;
}

.command-palette.active {
    display: flex;
}

.command-palette-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
}

.command-palette-content {
    position: relative;
    width: 90%;
    max-width: 600px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    z-index: 1;
}

.command-palette-header {
    padding: 16px;
    border-bottom: 1px solid var(--border);
}

.command-palette-input {
    width: 100%;
    padding: 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 14px;
    font-family: inherit;
}

.command-palette-input:focus {
    outline: none;
    border-color: var(--primary);
}

.command-palette-results {
    max-height: 400px;
    overflow-y: auto;
    padding: 8px;
}

.command-palette-category {
    padding: 8px 12px;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.command-palette-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.15s;
}

.command-palette-item:hover,
.command-palette-item.selected {
    background: var(--bg-tertiary);
}

.command-label {
    color: var(--text-primary);
    font-size: 13px;
}

.command-label mark {
    background: var(--primary);
    color: white;
    padding: 0 2px;
    border-radius: 2px;
}

.command-shortcut {
    color: var(--text-secondary);
    font-size: 11px;
    font-family: 'Courier New', monospace;
}

.command-palette-empty {
    padding: 24px;
    text-align: center;
    color: var(--text-secondary);
    font-size: 13px;
}

/* Mobile Optimizations for Editor */
@media (max-width: 768px) {
    .toolbar {
        height: 56px;
        padding: 0 12px;
    }
    
    .toolbar-btn {
        min-height: 44px;
        min-width: 44px;
        padding: 8px 12px;
        font-size: 12px;
        touch-action: manipulation;
        -webkit-tap-highlight-color: transparent;
    }
    
    .toolbar-left,
    .toolbar-center,
    .toolbar-right {
        gap: 6px;
    }
    
    .logo {
        font-size: 13px;
    }
    
    .canvas-wrapper {
        overflow: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .canvas {
        margin: 20px auto;
        transform-origin: top center;
    }
    
    .canvas-toolbar {
        padding: 8px 12px;
        flex-wrap: wrap;
        gap: 8px;
    }
    
    .canvas-btn {
        min-height: 44px;
        min-width: 44px;
        padding: 8px 12px;
        font-size: 12px;
        touch-action: manipulation;
        -webkit-tap-highlight-color: transparent;
    }
    
    .canvas-controls {
        gap: 8px;
    }
    
    .properties-content {
        padding: 12px;
    }
    
    .property-input,
    .property-select,
    .property-textarea {
        min-height: 44px;
        font-size: 16px;
        touch-action: manipulation;
    }
    
    .checkbox-label {
        min-height: 44px;
        touch-action: manipulation;
        -webkit-tap-highlight-color: transparent;
    }
    
    .command-palette-content {
        width: 95%;
        max-height: 80vh;
    }
    
    .command-palette-item {
        min-height: 44px;
        touch-action: manipulation;
    }
}