/* CSS Variables */

:root {
    /* Color palette */
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-primary-light: #3b82f6;
    --color-secondary: #6b7280;
    --color-accent: #8b5cf6;

    /* Interface colors */
    --color-text: #1e293b;
    --color-text-light: #64748b;
    --color-text-muted: #94a3b8;
    --color-background: #f8fafc;
    --color-white: #ffffff;
    --color-border: #e2e8f0;
    --color-shadow: rgba(0, 0, 0, 0.1);

    /* Feedback colors */
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    --color-info: #3b82f6;

    /* Feedback background colors */
    --color-success-bg: #ecfdf5;
    --color-warning-bg: #fffbeb;
    --color-danger-bg: #fef2f2;
    --color-info-bg: #eff6ff;

    /* Feedback text colors */
    --color-success-text: #064e3b;
    --color-warning-text: #f59e0b;
    --color-danger-text: #7f1d1d;
    --color-info-text: #1e3a8a;

    /* Feedback border colors */
    --color-success-border: #a7f3d0;
    --color-warning-border: #fcd34d;
    --color-danger-border: #fecaca;
    --color-info-border: #bfdbfe;

    /* Gray scale */
    --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;

    /* Typography */
    --font-main: "Verdana", "Arial", sans-serif;
    --font-secondary: "Georgia", "Times New Roman", serif;
    --font-mono: "Consolas", "Monaco", monospace;

    /* Font sizes */
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;

    /* Spacing */
    --spacing-0: 0;
    --spacing-1: 0.25rem;  /* 4px */
    --spacing-2: 0.5rem;   /* 8px */
    --spacing-3: 0.75rem;  /* 12px */
    --spacing-4: 1rem;     /* 16px */
    --spacing-5: 1.25rem;  /* 20px */
    --spacing-6: 1.5rem;   /* 24px */
    --spacing-8: 2rem;     /* 32px */
    --spacing-10: 2.5rem;  /* 40px */
    --spacing-12: 3rem;    /* 48px */
    --spacing-16: 4rem;    /* 64px */
    --spacing-20: 5rem;    /* 80px */
    --spacing-24: 6rem;    /* 96px */

    /* Borders & Shadows */
    --border-radius: 0.25rem;
    --border-radius-lg: 0.5rem;
    --border-radius-full: 9999px;

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

    /* Animation */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Z-index layers */
    --z-index-dropdown: 1000;
    --z-index-sticky: 1020;
    --z-index-fixed: 1030;
    --z-index-modal-backdrop: 1040;
    --z-index-modal: 1050;
    --z-index-popover: 1060;
    --z-index-tooltip: 1070;

    /* Media query breakpoints */
    --breakpoint-xs: 0;
    --breakpoint-sm: 576px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 992px;
    --breakpoint-xl: 1200px;
    --breakpoint-xxl: 1400px;
    --breakpoint-xxxl: 1600px;
    --breakpoint-xxxxl: 1920px;
}