/* Variables with Enhanced Color Palette */
:root {
    /* Primary Color Palette */
    --primary-color: #228be6;
    --primary-color-light: #4dabf7;
    --primary-color-dark: #1c7ed6;

    /* Secondary Color Palette */
    --secondary-color: #2c3e50;
    --secondary-color-light: #34495e;
    --secondary-color-dark: #1a252f;

    /* Status Colors */
    --success-color: #2ecc71;
    --danger-color: #e74c3c;
    --warning-color: #f39c12;
    --info-color: #3498db;

    /* Neutral Colors */
    --light-color: #f8f9fa;
    --dark-color: #212529;
    --gray-color: #6c757d;

    /* Background and Text */
    --body-bg: #ffffff;
    --body-color: #212529;
    --border-color: rgba(0,0,0,0.1);

    /* Typography */
    --font-family-base: 'Cairo', 'Arial', sans-serif;
    --font-size-base: 1rem;
    --line-height-base: 1.5;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
}

/* Enhanced Dark Theme */
[data-theme="dark"] {
    --body-bg: #121212;
    --body-color: #e0e0e0;
    --card-bg: #1e1e1e;
    --border-color: rgba(255,255,255,0.12);
    --primary-color: #4dabf7;
    --secondary-color: #2c3e50;
}

/* Accessibility and Performance Improvements */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    transition: all 0.2s ease-in-out;
}

body {
    font-family: var(--font-family-base);
    line-height: var(--line-height-base);
    background-color: var(--body-bg);
    color: var(--body-color);
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Enhanced Card Design */
.card {
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
    overflow: hidden;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0,0,0,0.15);
}

/* Responsive Typography */
@media (max-width: 768px) {
    :root {
        --font-size-base: 0.9rem;
    }
}

/* Improved Form Styles */
.form-control {
    border-radius: 8px;
    padding: var(--spacing-sm) var(--spacing-md);
    transition: all 0.3s ease;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(34, 139, 230, 0.25);
}

/* Enhanced Button Styles */
.btn {
    border-radius: 8px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

/* Accessibility Improvements */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Print Styles */
@media print {
    body {
        background: white !important;
        color: black !important;
        font-size: 12pt;
    }
    
    .no-print {
        display: none !important;
    }
}

/* Performance and Accessibility Media Queries */
@media (prefers-reduced-motion: reduce) {
    * {
        transition: none !important;
    }
}

@media (prefers-color-scheme: dark) {
    :root {
        color-scheme: dark;
    }
}

/* RTL Support */
[dir="rtl"] .me-auto {
    margin-left: auto !important;
    margin-right: 0 !important;
}

[dir="rtl"] .ms-auto {
    margin-right: auto !important;
    margin-left: 0 !important;
}

[dir="rtl"] .me-2 {
    margin-left: 0.5rem !important;
    margin-right: 0 !important;
}

[dir="rtl"] .ms-2 {
    margin-right: 0.5rem !important;
    margin-left: 0 !important;
}

/* Navigation */
.navbar {
    background-color: var(--body-bg) !important;
    border-color: var(--border-color);
}

.navbar-light .navbar-nav .nav-link {
    color: var(--nav-link-color);
}

.navbar-light .navbar-nav .nav-link:hover {
    color: var(--nav-link-hover-color);
}

/* Tables */
.table {
    color: var(--body-color);
}

/* Custom Components */
.hero-section {
    background: linear-gradient(rgba(52, 152, 219, 0.1), rgba(52, 152, 219, 0.05));
    border-radius: 1rem;
    padding: 4rem 2rem;
    margin-bottom: 3rem;
}

.social-links a {
    font-size: 1.25rem;
    transition: color 0.3s;
}

.social-links a:hover {
    color: var(--primary-color) !important;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-section {
        padding: 2rem 1rem;
    }
    
    .navbar-brand {
        font-size: 1rem;
    }
}