* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html, body {
            height: 100%;
            font-family: 'Segoe UI', sans-serif;
        }

        .login-page {
            min-height: 100vh;
            width: 100%;
            background: url('/image/shop.jpg') no-repeat center center;
            background-size: cover;
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 1rem;
        }

        .login-box {
            width: 100%;
            max-width: 400px;
            background: rgba(255, 255, 255, 0.95);
            padding: 2rem 1.5rem;
            border-radius: 10px;
            box-shadow: 0 0 15px rgba(0, 0, 0, 0.1);
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        h2 {
            text-align: center;
            margin-bottom: 1.5rem;
            font-size: 1.8rem;
        }

        input[type="text"],
        input[type="password"] {
            width: 100%;
            padding: 0.8rem;
            margin: 0.5rem 0;
            border: 1px solid #ccc;
            border-radius: 8px;
            font-size: 1rem;
        }

        button {
            width: 100%;
            padding: 0.8rem;
            background: #007bff;
            border: none;
            color: #fff;
            font-size: 1rem;
            border-radius: 8px;
            cursor: pointer;
            transition: background 0.3s ease;
        }

        button:hover {
            background: #0056b3;
        }

        .error-message {
            color: red;
            text-align: center;
            margin-top: 1rem;
            font-size: 0.95rem;
        }

        @media (max-width: 480px) {
            .login-box {
                padding: 1.5rem 1rem;
                box-shadow: 0 0 10px rgba(0, 0, 0, 0.15);
            }

            h2 {
                font-size: 1.5rem;
            }

            input[type="text"],
            input[type="password"],
            button {
                font-size: 0.95rem;
                padding: 0.7rem;
            }
        }