/**
 * CSS Variables - LAAM LMS Design System
 * نظام الألوان والخطوط والمسافات
 */

:root {
    /* ========== Primary Colors ========== */
    --primary-color: #4F46E5;
    --primary-dark: #4338CA;
    --primary-light: #818CF8;
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    
    /* ========== Secondary Colors ========== */
    --secondary-color: #10B981;
    --secondary-dark: #059669;
    --secondary-light: #34D399;
    
    /* ========== Accent Colors ========== */
    --warning-color: #F59E0B;
    --warning-dark: #D97706;
    --warning-light: #FBBF24;
    
    --danger-color: #EF4444;
    --danger-dark: #DC2626;
    --danger-light: #F87171;
    
    --info-color: #3B82F6;
    --info-dark: #2563EB;
    --info-light: #60A5FA;
    
    --success-color: #10B981;
    --success-dark: #059669;
    --success-light: #34D399;
    
    /* ========== Neutral Colors ========== */
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;
    
    /* ========== Background Colors ========== */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F9FAFB;
    --bg-dark: #1F2937;
    --bg-dark-secondary: #111827;
    
    /* ========== Text Colors ========== */
    --text-primary: #111827;
    --text-secondary: #6B7280;
    --text-muted: #9CA3AF;
    --text-light: #FFFFFF;
    --text-dark: #1F2937;
    
    /* ========== Typography ========== */
    --font-family: 'Cairo', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-size-xs: 0.75rem;      /* 12px */
    --font-size-sm: 0.875rem;     /* 14px */
    --font-size-base: 1rem;       /* 16px */
    --font-size-lg: 1.125rem;     /* 18px */
    --font-size-xl: 1.25rem;      /* 20px */
    --font-size-2xl: 1.5rem;      /* 24px */
    --font-size-3xl: 1.875rem;    /* 30px */
    --font-size-4xl: 2.25rem;     /* 36px */
    
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    
    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;
    
    /* ========== Spacing ========== */
    --spacing-xs: 0.25rem;    /* 4px */
    --spacing-sm: 0.5rem;     /* 8px */
    --spacing-md: 1rem;       /* 16px */
    --spacing-lg: 1.5rem;     /* 24px */
    --spacing-xl: 2rem;       /* 32px */
    --spacing-2xl: 3rem;      /* 48px */
    --spacing-3xl: 4rem;      /* 64px */
    
    /* ========== Border Radius ========== */
    --radius-sm: 0.25rem;     /* 4px */
    --radius-md: 0.5rem;      /* 8px */
    --radius-lg: 0.75rem;     /* 12px */
    --radius-xl: 1rem;        /* 16px */
    --radius-2xl: 1.5rem;     /* 24px */
    --radius-full: 9999px;    /* Full circle */
    
    /* ========== Shadows ========== */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
    
    /* ========== Glassmorphism ========== */
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --glass-backdrop: blur(10px);
    
    /* ========== Transitions ========== */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
    
    /* ========== Z-Index ========== */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
    
    /* ========== Sidebar ========== */
    --sidebar-width: 280px;
    --sidebar-width-collapsed: 80px;
    --sidebar-bg: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --sidebar-text: #FFFFFF;
    
    /* ========== Navbar ========== */
    --navbar-height: 70px;
    --navbar-bg: rgba(255, 255, 255, 0.95);
    --navbar-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    
    /* ========== Main Content ========== */
    --main-padding: 2rem;
    --main-padding-mobile: 1rem;
    
    /* ========== Card ========== */
    --card-bg: #FFFFFF;
    --card-border: #E5E7EB;
    --card-shadow: var(--shadow-md);
    --card-radius: var(--radius-lg);
    --card-padding: 1.5rem;
    
    /* ========== Button ========== */
    --btn-padding-x: 1.5rem;
    --btn-padding-y: 0.75rem;
    --btn-radius: var(--radius-md);
    --btn-font-weight: var(--font-weight-medium);
    --btn-transition: var(--transition-base);
    
    /* ========== Input ========== */
    --input-padding-x: 1rem;
    --input-padding-y: 0.75rem;
    --input-border: 1px solid var(--gray-300);
    --input-radius: var(--radius-md);
    --input-focus-border: var(--primary-color);
    --input-focus-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
    
    /* ========== Table ========== */
    --table-border: 1px solid var(--gray-200);
    --table-header-bg: var(--gray-50);
    --table-row-hover: var(--gray-50);
    --table-stripe-bg: var(--gray-50);
    
    /* ========== Breakpoints ========== */
    --breakpoint-sm: 576px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 992px;
    --breakpoint-xl: 1200px;
    --breakpoint-2xl: 1400px;
}

/* Dark Mode Variables (Optional - for future use) */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #1F2937;
        --bg-secondary: #111827;
        --text-primary: #F9FAFB;
        --text-secondary: #D1D5DB;
        --text-muted: #9CA3AF;
        --card-bg: #374151;
        --card-border: #4B5563;
    }
}