:root {
    /* Color Scheme */
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-primary-light: #dbeafe;
    --color-secondary: #525252;
    --color-accent: #3b82f6;
    --color-success: #16a34a;
    --color-warning: #f59e0b;
    --color-danger: #dc2626;
    --color-info: #0284c7;
    
    /* Background colors - white by default */
    --color-background: #ffffff;
    --color-background-alt: #f8fafc;
    --color-border: #e2e8f0;
    
    /* Text colors - dark for good contrast on white */
    --color-text: #1e293b;
    --color-text-secondary: #64748b;

    /* Grayscale */
    --color-gray-50: #f9fafb;
    --color-gray-100: #f3f4f6;
    --color-gray-200: #e5e7eb;
    --color-gray-300: #d1d5db;
    --color-gray-400: #9ca3af;
    --color-gray-500: #6b7280;
    --color-gray-600: #4b5563;
    --color-gray-700: #374151;
    --color-gray-800: #1f2937;
    --color-gray-900: #111827;
    --color-white: #ffffff;
    --color-black: #000000;

    /* Social Colors */
    --color-google: #db4437;
    --color-microsoft: #0078d4;
    --color-facebook: #1877f2;
    
    /* UI Colors */
    --color-menu-bg: #1e1e2d;
    --color-menu-hover: #2a2a3a;
    --color-menu-border: #3a3a4a;
    --color-menu-text: rgba(255, 255, 255, 0.95);
    --color-menu-disabled: rgba(153, 146, 146, 0.95);
    
    /* Dimensions */
    --size-menu-height: 3.5rem;
    --size-toolbar-height: 3rem;
    --size-sidebar-width: 17.5rem;
    
    /* Transitions */
    --transition-speed-fast: 0.15s;
    --transition-speed: 0.25s;
    --transition-speed-slow: 0.4s;
    --transition-easing: cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Shadows */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    
    /* Border Radius */
    --radius-xs: 0.125rem;
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    --radius-full: 9999px;
    
    /* Z-index */
    --z-index-menu: 1000;
    --z-index-submenu: 1010;
    --z-index-modal: 1050;
}

@media (prefers-color-scheme: dark) {
    :root {
        --color-gray-50: #111827;
        --color-gray-100: #1f2937;
        --color-gray-200: #374151;
        --color-gray-300: #4b5563;
        --color-gray-400: #6b7280;
        --color-gray-500: #9ca3af;
        --color-gray-600: #d1d5db;
        --color-gray-700: #e5e7eb;
        --color-gray-800: #f3f4f6;
        --color-gray-900: #f9fafb;
        
        /* Dark mode backgrounds */
        --color-background: #0f172a;
        --color-background-alt: #1e293b;
        --color-border: #334155;
        
        /* Dark mode text colors */
        --color-text: #f8fafc;
        --color-text-secondary: #94a3b8;

        /* Menu colors for dark mode */
        --color-menu-bg: #111827;
        --color-menu-hover: #1e293b;
        --color-menu-border: #334155;

        /* Adjusted shadows for dark mode */
        --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
        --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);        
    }
}

/* Base styles with white background */
body {
    min-height: 100%;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    color: var(--color-text);
    background-color: var(--color-background);
    line-height: 1.5;
    font-size: 0.875rem;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

/* Main content areas */
.main-content {
    background-color: var(--color-background);
}

.sidebar {
    background-color: var(--color-background);
    border-right: 1px solid var(--color-border);
}

.sidebar-header {
    background-color: var(--color-background);
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text);
}

/* Loading overlay - adjusted for white background */
.loading-overlay {
    background-color: rgba(255, 255, 255, 0.9);
}

/* Toolbar adjustments */
.toolbar-container {
    background-color: var(--color-background);
    border-bottom: 1px solid var(--color-border);
}

.toolbar-btn {
    color: var(--color-text);
}

.toolbar-btn:hover {
    background-color: var(--color-gray-100);
    color: var(--color-primary);
}

/* Form elements */
.form-group input,
.custom-select select {
    background-color: var(--color-background);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

/* Modal styles */
.modal-content {
    background-color: var(--color-background);
    color: var(--color-text);
}

/* Tree view adjustments */
.tree-view {
    color: var(--color-text);
}

.tree-item-content {
    color: var(--color-text);
}

/* Buttons */
.btn-outline {
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

/* Auth container */
.auth-container {
    background-color: var(--color-background);
    background-image: none;
}

.auth-wrapper {
    background: var(--color-background);
    border: 1px solid var(--color-border);
}

/* Table styles */
.pricing-table th,
.pricing-table td {
    border: 1px solid var(--color-border);
}

.pricing-table thead th {
    background-color: var(--color-background-alt);
    color: var(--color-text);
}

/* Card styles */
.account-card {
    background: var(--color-background);
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

/* Additional contrast improvements */
h1, h2, h3, h4, h5, h6 {
    color: var(--color-text);
}

a {
    color: var(--color-primary);
}

/* Dark mode specific adjustments */
@media (prefers-color-scheme: dark) {
    .loading-overlay {
        background-color: rgba(15, 23, 42, 0.9);
    }
    
    .btn-outline {
        border-color: var(--color-gray-600);
    }
    
    .pricing-table thead th {
        background-color: var(--color-gray-800);
    }
}

/* Ensure all text has sufficient contrast */
.text-primary {
    color: var(--color-text);
}

.text-secondary {
    color: var(--color-text-secondary);
}

/* Focus states for better accessibility */
:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Input placeholder text */
::placeholder {
    color: var(--color-text-secondary);
    opacity: 0.7;
}

/* Selection colors */
::selection {
    background-color: var(--color-primary-light);
    color: var(--color-text);
}