/* Base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    color: #333;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('https://images.unsplash.com/photo-1511919884226-fd3cad34687c?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=2070&q=80') no-repeat center center fixed;
    background-size: cover;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ... all your other CSS ... */
<style>
        /* Base styles */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        body {
            color: #333;
            line-height: 1.6;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('https://images.unsplash.com/photo-1511919884226-fd3cad34687c?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=2070&q=80') no-repeat center center fixed;
            background-size: cover;
        }
        
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        
        
        .logo {
            font-size: 1.8rem;
            font-weight: bold;
            display: flex;
            align-items: center;
        }
        
        .logo i {
            margin-right: 10px;
            color: #3498db;
        }
        
        /* Navigation */
        nav ul {
            display: flex;
            list-style: none;
        }
        
        nav ul li {
            margin-left: 1.5rem;
        }
        
        nav ul li a {
            color: white;
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s;
            display: flex;
            align-items: center;
        }
        
        nav ul li a i {
            margin-right: 5px;
        }
        
        nav ul li a:hover {
            color: #3498db;
        }
        
        /* Main content */
        .main-content {
            flex: 1;
            display: flex;
            align-items: center;
            padding: 2rem 0;
        }
        
        /* Hero section */
        .hero {
            width: 100%;
            text-align: center;
            background: rgba(255, 255, 255, 0.85);
            margin: 2rem auto;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
            padding: 2.5rem;
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        
        .hero h1 {
            font-size: 2.8rem;
            margin-bottom: 1rem;
            color: #2c3e50;
            text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.1);
        }
        
        .hero p {
            font-size: 1.2rem;
            color: #5a6268;
            max-width: 800px;
            margin: 0 auto 2rem;
        }
        
        /* Login form */
        .login-form {
            max-width: 450px;
            margin: 0 auto;
            padding: 2.5rem;
            background: rgba(255, 255, 255, 0.95);
            border-radius: 15px;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
            border-top: 5px solid #3498db;
            position: relative;
        }
        
        .login-form::before {
            content: '';
            position: absolute;
            top: -5px;
            left: -5px;
            right: -5px;
            bottom: -5px;
            background: linear-gradient(45deg, #3498db, #2c3e50, #3498db);
            border-radius: 20px;
            z-index: -1;
            opacity: 0.7;
        }
        
        .login-form h2 {
            text-align: center;
            margin-bottom: 1.5rem;
            color: #2c3e50;
            font-size: 1.8rem;
        }
        
        .form-group {
            margin-bottom: 1.5rem;
            position: relative;
        }
        
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 500;
            color: #2c3e50;
        }
        
        .form-group input {
            width: 100%;
            padding: 0.8rem 1rem 0.8rem 40px;
            border: 1px solid #ddd;
            border-radius: 8px;
            font-size: 1rem;
            transition: border-color 0.3s;
        }
        
        .form-group input:focus {
            border-color: #3498db;
            outline: none;
            box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
        }
        
        .form-group i {
            position: absolute;
            left: 15px;
            top: 38px;
            color: #7f8c8d;
        }
        
        .btn {
            display: inline-block;
            background: #3498db;
            color: white;
            padding: 0.8rem 1.5rem;
            border: none;
            border-radius: 8px;
            cursor: pointer;
            font-size: 1rem;
            font-weight: 500;
            transition: all 0.3s;
            width: 100%;
            text-align: center;
        }
        
        .btn:hover {
            background: #2980b9;
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        
        .btn i {
            margin-right: 8px;
        }
        
        .form-footer {
            margin-top: 1.5rem;
            text-align: center;
        }
        
        .form-footer a {
            color: #3498db;
            text-decoration: none;
            transition: color 0.3s;
        }
        
        .form-footer a:hover {
            color: #2980b9;
            text-decoration: underline;
        }
        
        /* Features section */
        .features {
            padding: 3rem 0;
            background: rgba(255, 255, 255, 0.9);
            border-radius: 15px;
            margin-top: 2rem;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            backdrop-filter: blur(5px);
        }
        
        .features h2 {
            text-align: center;
            margin-bottom: 2rem;
            color: #2c3e50;
            font-size: 2.2rem;
        }
        
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }
        
        .feature-card {
            background: white;
            padding: 1.8rem;
            border-radius: 12px;
            text-align: center;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            transition: transform 0.3s;
        }
        
        .feature-card:hover {
            transform: translateY(-5px);
        }
        
        .feature-icon {
            font-size: 2.8rem;
            color: #3498db;
            margin-bottom: 1.2rem;
        }
        
        .feature-card h3 {
            margin-bottom: 1rem;
            color: #2c3e50;
        }
        
        
        /* Responsive adjustments */
        @media (max-width: 768px) {
            .header-content {
                flex-direction: column;
                text-align: center;
            }
            
            nav ul {
                margin-top: 1rem;
                justify-content: center;
                flex-wrap: wrap;
            }
            
            nav ul li {
                margin: 0.5rem;
            }
            
            .hero h1 {
                font-size: 2.2rem;
            }
            
            .hero p {
                font-size: 1rem;
            }
            
            .login-form {
                padding: 1.5rem;
            }
            
            .feature-grid {
                grid-template-columns: 1fr;
            }
            
            body {
                background-attachment: scroll;
            }
        }
    </style>