/* General Styles */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        body {
            background-color: #f8f9fa;
            color: #333;
            line-height: 1.6;
            padding-top: 70px; /* Account for fixed header */
        }
        
        .container {
            width: 90%;
            max-width: 1200px;
            margin: 0 auto;
        }
        
        /* Header Styles */
        header {
            background: linear-gradient(135deg, #2c3e50, #1a2530);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
        }
        
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .logo i {
            color: #4CAF50;
        }
        
        .logo h1 {
            font-size: 1.5rem;
            font-weight: 600;
        }
        
        /* Navigation */
        nav ul {
            display: flex;
            list-style: none;
            gap: 1.5rem;
        }
        
        nav ul li a {
            color: white;
            text-decoration: none;
            font-weight: 500;
            padding: 0.5rem 0;
            transition: color 0.3s;
            position: relative;
        }
        
        nav ul li a:hover {
            color: #4CAF50;
        }
        
        nav ul li a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: #4CAF50;
            transition: width 0.3s;
        }
        
        nav ul li a:hover::after {
            width: 100%;
        }
        
        /* Mobile menu button */
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
            z-index: 1001;
        }
        
        /* Mobile Navigation */
        .mobile-nav {
            position: fixed;
            top: 0;
            right: -100%;
            width: 80%;
            max-width: 400px;
            height: 100vh;
            background: linear-gradient(135deg, #2c3e50, #1a2530);
            padding: 5rem 2rem 2rem;
            transition: right 0.3s ease;
            z-index: 999;
            box-shadow: -5px 0 15px rgba(0, 0, 0, 0.2);
            overflow-y: auto;
        }
        
        .mobile-nav.show {
            right: 0;
        }
        
        .mobile-nav ul {
            list-style: none;
        }
        
        .mobile-nav ul li {
            margin-bottom: 1.5rem;
        }
        
        .mobile-nav ul li a {
            color: white;
            text-decoration: none;
            font-size: 1.2rem;
            display: block;
            padding: 0.5rem 0;
            transition: color 0.3s;
        }
        
        .mobile-nav ul li a:hover {
            color: #4CAF50;
        }
        
        .close-menu {
            position: absolute;
            top: 1rem;
            right: 1rem;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
        }
        
        .overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            z-index: 998;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s;
        }
        
        .overlay.show {
            opacity: 1;
            visibility: visible;
        }
        
        /* Page Header */
        .page-header {
            background: linear-gradient(to right, #3498db, #2c3e50);
            color: white;
            padding: 3rem 0;
            text-align: center;
            margin-bottom: 2rem;
        }
        
        .page-header h1 {
            font-size: 2.5rem;
            margin-bottom: 1rem;
        }
        
        .page-header p {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto;
        }
        
        /* Breadcrumb */
        .breadcrumb {
            background-color: #e9ecef;
            padding: 1rem 0;
            margin-bottom: 2rem;
        }
        
        .breadcrumb-content {
            display: flex;
            gap: 0.5rem;
            flex-wrap: wrap;
        }
        
        .breadcrumb-content a {
            color: #6c757d;
            text-decoration: none;
        }
        
        .breadcrumb-content a:hover {
            color: #3498db;
            text-decoration: underline;
        }
        
        /* PDF Previews Section - One per row */
        .pdf-previews {
            display: flex;
            flex-direction: column;
            gap: 2rem;
            margin-bottom: 3rem;
        }
        
        .pdf-card {
            background: white;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            transition: transform 0.3s, box-shadow 0.3s;
            display: flex;
            flex-direction: column;
        }
        
        .pdf-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
        }
        
        .pdf-header {
            background: linear-gradient(to right, #3498db, #2c3e50);
            color: white;
            padding: 1.5rem;
            text-align: center;
        }
        
        .pdf-preview-container {
            height: 500px;
            background: #f1f3f4;
            overflow: hidden;
        }
        
        .pdf-preview-container iframe {
            width: 100%;
            height: 100%;
            border: none;
        }
        
        .pdf-info {
            padding: 1.5rem;
        }
        
        .pdf-info h3 {
            font-size: 1.5rem;
            margin-bottom: 1rem;
            color: #2c3e50;
        }
        
        .pdf-info p {
            color: #666;
            margin-bottom: 1.5rem;
            font-size: 1rem;
        }
        
        .pdf-meta {
            display: flex;
            justify-content: space-between;
            color: #888;
            font-size: 0.9rem;
            border-top: 1px solid #eee;
            padding-top: 0.8rem;
            flex-wrap: wrap;
            gap: 10px;
        }
        
        .download-btn {
            display: inline-block;
            background: #3498db;
            color: white;
            padding: 0.8rem 1.5rem;
            border-radius: 5px;
            text-decoration: none;
            font-weight: 500;
            transition: background 0.3s;
            margin-top: 1rem;
        }
        
        .download-btn:hover {
            background: #2980b9;
        }
        
        /* Resources Section */
        .resources-section {
            background: white;
            border-radius: 10px;
            padding: 2rem;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            margin-bottom: 3rem;
        }
        
        .section-title {
            font-size: 1.8rem;
            margin-bottom: 1.5rem;
            color: #2c3e50;
            position: relative;
            padding-bottom: 0.5rem;
        }
        
        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 60px;
            height: 3px;
            background: #3498db;
        }
        
        .resources-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.5rem;
        }
        
        .resource-card {
            background: #f8f9fa;
            border-radius: 8px;
            padding: 1.5rem;
            text-align: center;
            transition: transform 0.3s;
        }
        
        .resource-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        
        .resource-icon {
            font-size: 2.5rem;
            color: #3498db;
            margin-bottom: 1rem;
        }
        
        /* Footer */
        footer {
            background: #2c3e50;
            color: white;
            padding: 3rem 0 1rem;
        }
        
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        
        .footer-column h3 {
            font-size: 1.2rem;
            margin-bottom: 1.5rem;
            position: relative;
            padding-bottom: 0.5rem;
        }
        
        .footer-column h3::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 40px;
            height: 2px;
            background: #3498db;
        }
        
        .footer-column ul {
            list-style: none;
        }
        
        .footer-column ul li {
            margin-bottom: 0.8rem;
        }
        
        .footer-column ul li a {
            color: #ddd;
            text-decoration: none;
            transition: color 0.3s;
        }
        
        .footer-column ul li a:hover {
            color: #3498db;
        }
        
        .social-links {
            display: flex;
            gap: 1rem;
            margin-top: 1rem;
        }
        
        .social-links a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
            color: white;
            transition: all 0.3s;
        }
        
        .social-links a:hover {
            background: #3498db;
            transform: translateY(-3px);
        }
        
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }
        
        /* Responsive styles */
        @media (max-width: 1024px) {
            .logo h1 {
                font-size: 1.3rem;
            }
            
            nav ul {
                gap: 1rem;
            }
        }
        
        @media (max-width: 768px) {
            body {
                padding-top: 60px;
            }
            
            .header-container {
                padding: 0 1rem;
            }
            
            .logo h1 {
                font-size: 1.1rem;
            }
            
            .desktop-nav {
                display: none;
            }
            
            .mobile-menu-btn {
                display: block;
            }
            
            .page-header {
                padding: 2rem 0;
            }
            
            .page-header h1 {
                font-size: 1.8rem;
            }
            
            .page-header p {
                font-size: 1rem;
                padding: 0 1rem;
            }
            
            .pdf-preview-container {
                height: 300px;
            }
            
            .pdf-info h3 {
                font-size: 1.3rem;
            }
            
            .resources-grid {
                grid-template-columns: 1fr;
            }
            
            .breadcrumb-content {
                padding: 0 1rem;
            }
        }
        
        @media (max-width: 480px) {
            .logo h1 {
                font-size: 1rem;
            }
            
            .page-header h1 {
                font-size: 1.5rem;
            }
            
            .pdf-preview-container {
                height: 250px;
            }
            
            .pdf-info {
                padding: 1rem;
            }
            
            .pdf-info h3 {
                font-size: 1.2rem;
            }
            
            .section-title {
                font-size: 1.5rem;
            }
            
            .resource-card {
                padding: 1rem;
            }
            
            .footer-content {
                grid-template-columns: 1fr;
            }
        }