* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Poppins', sans-serif;
        }

        :root {
            --primary: #3498db;
            --secondary: #2c3e50;
            --accent: #e74c3c;
            --light: #f8f9fa;
            --dark: #343a40;
            --success: #28a745;
        }

        body {
            background-color: #f5f7fa;
            color: #333;
            line-height: 1.6;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }

        /* Header Styles */
        header {
            background: linear-gradient(135deg, var(--secondary) 0%, var(--primary) 100%);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .logo img {
            height: 40px;
            width: auto;
        }

        .logo h1 {
            font-size: 1.5rem;
            font-weight: 700;
        }

        nav ul {
            display: flex;
            list-style: none;
            gap: 1.5rem;
        }

        nav a {
            color: white;
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s ease;
        }

        nav a:hover {
            color: #ffd700;
        }

        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
        }

        /* Hero Section */
        .hero {
            background: linear-gradient(rgba(44, 62, 80, 0.8), rgba(44, 62, 80, 0.8)), url('https://images.unsplash.com/photo-1522202176988-66273c2fd55f?ixlib=rb-4.0.3&ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&auto=format&fit=crop&w=1171&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 4rem 0;
            text-align: center;
        }

        .hero h2 {
            font-size: 2.5rem;
            margin-bottom: 1rem;
        }

        .hero p {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto 2rem;
        }

        .search-box {
            max-width: 600px;
            margin: 0 auto;
            position: relative;
        }

        .search-box input {
            width: 100%;
            padding: 15px 20px;
            border-radius: 50px;
            border: none;
            font-size: 1rem;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
        }

        .search-box button {
            position: absolute;
            right: 5px;
            top: 5px;
            background: var(--primary);
            border: none;
            color: white;
            padding: 10px 20px;
            border-radius: 50px;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .search-box button:hover {
            background: #2980b9;
        }

        /* Semester Cards */
        .semester-section {
            padding: 4rem 0;
        }

        .section-title {
            text-align: center;
            margin-bottom: 3rem;
            color: var(--secondary);
            position: relative;
        }

        .section-title::after {
            content: '';
            display: block;
            width: 80px;
            height: 4px;
            background: var(--primary);
            margin: 10px auto;
            border-radius: 2px;
        }

        .cards-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 25px;
        }

        .card {
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            display: flex;
            flex-direction: column;
        }

        .card:hover {
            transform: translateY(-8px);
            box-shadow: 0 12px 25px rgba(0, 0, 0, 0.15);
        }

        .card-header {
            padding: 20px;
            color: white;
            text-align: center;
            font-weight: 600;
            font-size: 1.3rem;
        }

        .card-content {
            padding: 20px;
            flex-grow: 1;
        }

        .card-content ul {
            list-style-type: none;
            margin-top: 10px;
        }

        .card-content li {
            padding: 8px 0;
            border-bottom: 1px solid #f1f1f1;
            color: #34495e;
            display: flex;
            align-items: center;
        }

        .card-content li i {
            margin-right: 10px;
            color: var(--primary);
        }

        .card-content li:last-child {
            border-bottom: none;
        }

        .card-button {
            display: block;
            width: 100%;
            padding: 15px;
            background-color: var(--primary);
            color: white;
            text-align: center;
            border: none;
            font-size: 1rem;
            font-weight: 500;
            cursor: pointer;
            transition: background-color 0.3s ease;
            text-decoration: none;
        }

        .card-button:hover {
            background-color: #2980b9;
        }

        /* Different colors for each semester */
        .semester-1 .card-header { background: linear-gradient(135deg, #3498db 0%, #2980b9 100%); }
        .semester-2 .card-header { background: linear-gradient(135deg, #3498db 0%, #2980b9 100%); }
        .semester-3 .card-header { background: linear-gradient(135deg, #3498db 0%, #2980b9 100%); }
        .semester-4 .card-header { background: linear-gradient(135deg, #3498db 0%, #2980b9 100%); }              .semester-5 .card-header { background: linear-gradient(135deg, #3498db 0%, #2980b9 100%); }
        .semester-6 .card-header { background: linear-gradient(135deg, #3498db 0%, #2980b9 100%); }
        .semester-7 .card-header { background: linear-gradient(135deg, #3498db 0%, #2980b9 100%); }
        .semester-8 .card-header { background: linear-gradient(135deg, #3498db 0%, #2980b9 100%); }
        

        /* Features Section */
        .features {
            background: var(--light);
            padding: 4rem 0;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin-top: 2rem;
        }

        .feature-card {
            background: white;
            padding: 30px;
            border-radius: 10px;
            text-align: center;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: transform 0.3s ease;
        }

        .feature-card:hover {
            transform: translateY(-5px);
        }

        .feature-icon {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: 1rem;
        }

        /* Footer */
        footer {
            background: var(--secondary);
            color: white;
            padding: 3rem 0 1rem;
        }

        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin-bottom: 2rem;
        }

        .footer-column h3 {
            font-size: 1.2rem;
            margin-bottom: 1.5rem;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-column h3::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 40px;
            height: 3px;
            background: var(--primary);
        }

        .footer-column ul {
            list-style: none;
        }

        .footer-column ul li {
            margin-bottom: 10px;
        }

        .footer-column a {
            color: #ddd;
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .footer-column a:hover {
            color: var(--primary);
        }

        .social-links {
            display: flex;
            gap: 15px;
            margin-top: 15px;
        }

        .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%;
            transition: all 0.3s ease;
        }

        .social-links a:hover {
            background: var(--primary);
            transform: translateY(-3px);
        }

        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.9rem;
            color: #aaa;
        }

        /* Responsive adjustments */
        @media (max-width: 992px) {
            nav ul {
                gap: 1rem;
            }
            
            .hero h2 {
                font-size: 2rem;
            }
            
            .hero p {
                font-size: 1.1rem;
            }
        }

        @media (max-width: 768px) {
            .header-container {
                flex-direction: column;
                text-align: center;
                gap: 15px;
            }
            
            nav ul {
                flex-direction: column;
                gap: 0.5rem;
                text-align: center;
            }
            
            .mobile-menu-btn {
                display: block;
                position: absolute;
                top: 20px;
                right: 20px;
            }
            
            .cards-container {
                grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            }
            
            .hero {
                padding: 3rem 0;
            }
            
            .hero h2 {
                font-size: 1.8rem;
            }
        }

        @media (max-width: 576px) {
            .logo h1 {
                font-size: 1.3rem;
            }
            
            .hero h2 {
                font-size: 1.6rem;
            }
            
            .hero p {
                font-size: 1rem;
            }
            
            .search-box input {
                padding: 12px 15px;
            }
            
            .card-header {
                font-size: 1.1rem;
            }
            
            .section-title {
                font-size: 1.5rem;
            }
            
            .footer-content {
                grid-template-columns: 1fr;
            }
             * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
        }
        
        .container {
            width: 90%;
            max-width: 1200px;
            margin: 0 auto;
        }
        
        /* Header & Navbar Styles */
        header {
            background: linear-gradient(135deg, #2c3e50, #1a2530);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }
        
        .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 {
            display: flex;
        }
        
        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;
        }
        
        /* Responsive styles */
        @media (max-width: 768px) {
            .mobile-menu-btn {
                display: block;
            }
            
            nav ul {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: linear-gradient(135deg, #2c3e50, #1a2530);
                padding: 1rem;
                box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
            }
            
            nav ul.show {
                display: flex;
            }
            
            nav ul li {
                margin: 0.5rem 0;
            }
        }
        
        /* Hero Section */
        .hero {
            background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('https://images.unsplash.com/photo-1522202176988-66273c2fd55f?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            text-align: center;
            padding: 4rem 0;
        }
        
        .hero h2 {
            font-size: 2.5rem;
            margin-bottom: 1rem;
        }
        
        .hero p {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto;
        }
        
        }