/* ============================================
   Flowly  - Main Styles
   Modern diagramming application
   ============================================ */

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color Palette */
    --primary-color: #3498db;
    --primary-dark: #2980b9;
    --secondary-color: #2c3e50;
    --background: #ecf0f1;
    --surface: #ffffff;
    --surface-hover: #f8f9fa;
    --border-color: #bdc3c7;
    --text-primary: #2c3e50;
    --text-secondary: #7f8c8d;
    --danger: #e74c3c;
    --success: #27ae60;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    
    /* Sizes */
    --toolbar-height: 60px;
    --sidebar-width: 250px;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 20px rgba(0,0,0,0.15);
    
    /* Transitions */
    --transition: all 0.2s ease;
}

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

/* Main Container */
.main-container {
    display: flex;
    height: calc(100vh - var(--toolbar-height));
    overflow: hidden;
}

/* Sidebar Styles */
.sidebar {
    width: var(--sidebar-width);
    background: var(--surface);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

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

.sidebar-header {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    background: var(--surface);
}

.sidebar-header h3 {
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
}

/* Shapes Library */
.shapes-library {
    padding: var(--spacing-md);
    overflow-y: auto;
    flex: 1;
}

.shape-item {
    display: flex;
    align-items: center;
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    background: var(--surface-hover);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition);
}

.shape-item:hover {
    background: var(--primary-color);
    color: white;
    transform: translateX(4px);
    box-shadow: var(--shadow-md);
}

.shape-item i {
    font-size: 20px;
    margin-right: var(--spacing-md);
    width: 24px;
    text-align: center;
}

.shape-item span {
    font-size: 14px;
    font-weight: 500;
}

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

.canvas-controls {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--surface);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    gap: var(--spacing-lg);
}

.control-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 13px;
    cursor: pointer;
    user-select: none;
}

.control-item input[type="checkbox"] {
    cursor: pointer;
}

#canvas-wrapper {
    flex: 1;
    position: relative;
    overflow: hidden;
    background: 
        linear-gradient(90deg, rgba(0,0,0,0.03) 1px, transparent 1px),
        linear-gradient(rgba(0,0,0,0.03) 1px, transparent 1px);
    background-size: 20px 20px;
}

#canvas-wrapper.hide-grid {
    background: var(--background);
}

/* Properties Panel */
.properties-panel {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md);
}

.no-selection {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 200px;
    color: var(--text-secondary);
    text-align: center;
}

.no-selection i {
    font-size: 48px;
    margin-bottom: var(--spacing-md);
    opacity: 0.3;
}

.no-selection p {
    font-size: 13px;
    padding: 0 var(--spacing-lg);
}

.properties-content {
    animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Property Groups */
.property-group {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.property-group:last-child {
    border-bottom: none;
}

.property-group h4 {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.property-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.property-group input[type="range"] {
    width: calc(100% - 60px);
    margin-right: var(--spacing-sm);
}

.property-group input[type="number"] {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 13px;
    margin-bottom: var(--spacing-sm);
}

.color-input-group {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

.color-input-group input[type="color"] {
    width: 50px;
    height: 36px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    cursor: pointer;
}

.color-input-group input[type="text"] {
    flex: 1;
    padding: var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 13px;
    font-family: 'Courier New', monospace;
}

.input-row {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.input-col {
    flex: 1;
}

.input-col label {
    font-size: 11px;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.button-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.prop-btn {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--surface-hover);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

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

.prop-btn i {
    font-size: 12px;
}

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

.delete-btn:hover {
    background: #c0392b;
    border-color: #c0392b;
}

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

::-webkit-scrollbar-track {
    background: var(--surface-hover);
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

/* Utility Classes */
.hidden {
    display: none !important;
}

.disabled {
    opacity: 0.5;
    pointer-events: none;
}

/* Responsive adjustments */
@media (max-width: 1200px) {
    .sidebar {
        width: 200px;
    }
}