* {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }
    
    body {
        background: #f8f9fa;
        font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        min-height: 100vh;
    }
    
    .login-container {
        min-height: 100vh;
        display: flex;
        align-items: center;
        justify-content: center;
        padding: 15px;
    }
    
    .login-card {
        background: #fff;
        border-radius: 12px;
        padding: 30px 25px;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        border-top: 4px solid #004085;
        width: 100%;
        max-width: 400px;
    }
    
    .gov-logo {
        display: block;
        margin: 0 auto 15px;
        width: 60px;
        height: 60px;
        object-fit: contain;
    }
    
    .login-title {
        font-weight: 600;
        color: #004085;
        text-align: center;
        margin-bottom: 25px;
        font-size: 1.4rem;
    }
    
    .form-group {
        margin-bottom: 20px;
    }
    
    .form-label {
        font-weight: 500;
        color: #333;
        margin-bottom: 6px;
        display: block;
        font-size: 0.9rem;
    }
    
    .form-control {
        width: 100%;
        padding: 12px 15px;
        border: 1px solid #ddd;
        border-radius: 6px;
        font-size: 16px;
        background: #fafafa;
        transition: border-color 0.3s ease, background-color 0.3s ease;
    }
    
    .form-control:focus {
        outline: none;
        border-color: #004085;
        background: #fff;
        box-shadow: 0 0 0 2px rgba(0, 64, 133, 0.1);
    }
    
    .form-control::placeholder {
        color: #999;
        font-size: 15px;
    }
    
    .btn-primary {
        background: #004085;
        border: none;
        color: white;
        font-weight: 600;
        padding: 12px;
        border-radius: 6px;
        width: 100%;
        font-size: 1rem;
        cursor: pointer;
        transition: background-color 0.3s ease;
        text-transform: uppercase;
        letter-spacing: 0.5px;
    }
    
    .btn-primary:hover {
        background: #003366;
    }
    
    .btn-primary:disabled {
        background: #6c757d;
        cursor: not-allowed;
        opacity: 0.6;
    }
    
    .btn-primary:disabled:hover {
        background: #6c757d;
    }
    
    .alert-danger {
        background-color: #f8d7da;
        color: #721c24;
        padding: 12px 15px;
        border-radius: 6px;
        margin-bottom: 20px;
        border: 1px solid #f5c6cb;
        font-size: 0.9rem;
        text-align: center;
    }

    /* Mobile Optimization */
    @media (max-width: 768px) {
        .login-container {
            padding: 20px 15px;
            align-items: flex-start;
            padding-top: 60px;
        }
        
        .login-card {
            padding: 25px 20px;
            margin: 0;
            max-width: none;
            border-radius: 10px;
        }
        
        .login-title {
            font-size: 1.3rem;
            margin-bottom: 20px;
        }
        
        .gov-logo {
            width: 50px;
            height: 50px;
            margin-bottom: 12px;
        }
    }
    
    @media (max-width: 480px) {
        .login-container {
            padding: 15px 10px;
            padding-top: 40px;
        }
        
        .login-card {
            padding: 20px 15px;
            border-radius: 8px;
        }
        
        .login-title {
            font-size: 1.2rem;
            margin-bottom: 18px;
        }
        
        .gov-logo {
            width: 45px;
            height: 45px;
            margin-bottom: 10px;
        }
        
        .form-group {
            margin-bottom: 15px;
        }
        
        .form-label {
            font-size: 0.85rem;
        }
        
        .form-control {
            padding: 10px 12px;
            font-size: 16px;
        }
        
        .btn-primary {
            padding: 10px;
            font-size: 0.9rem;
        }
    }
    
    @media (max-width: 360px) {
        .login-container {
            padding: 10px 8px;
            padding-top: 30px;
        }
        
        .login-card {
            padding: 18px 12px;
        }
        
        .login-title {
            font-size: 1.1rem;
        }
        
        .form-control {
            padding: 9px 10px;
        }
    }
    
    /* Landscape mobile */
    @media (max-height: 600px) and (orientation: landscape) {
        .login-container {
            padding-top: 20px;
            align-items: flex-start;
        }
        
        .login-card {
            padding: 15px 20px;
        }
        
        .login-title {
            font-size: 1.1rem;
            margin-bottom: 15px;
        }
        
        .gov-logo {
            width: 40px;
            height: 40px;
            margin-bottom: 8px;
        }
        
        .form-group {
            margin-bottom: 12px;
        }
    }