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

body {
    background: url('../picture/monumen.jpg') no-repeat center center fixed;
    background-size: cover;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
}

.login-box {
    background: rgba(255, 255, 255, 0.15);
    padding: 40px;
    border-radius: 16px;
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
    text-align: center;
    color: #fff;
    max-width: 400px;
    width: 100%;
}

.logo img {
    height: 70px;
    margin-bottom: 15px;
    filter: drop-shadow(2px 2px 4px rgba(0,0,0,0.4));
}

h2 {
    margin-bottom: 30px;
    color: #f1f5f9;
}

form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

form input {
    padding: 12px;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    background-color: rgba(255, 255, 255, 0.9);
    color: #1e293b;
}

form button {
    padding: 12px;
    background-color: #991b1b;
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.3s ease;
}

form button:hover {
    background-color: #7f1d1d;
}

.back-btn {
    display: inline-block;
    margin-top: 20px;
    text-decoration: none;
    color: #fff;
    font-weight: bold;
    background-color: rgba(255,255,255,0.2);
    padding: 10px 20px;
    border-radius: 8px;
    transition: background 0.3s ease;
}

.back-btn:hover {
    background-color: rgba(255,255,255,0.4);
    color: #1e293b;
}

/* Responsive */
@media (max-width: 500px) {
    .login-box {
        padding: 25px;
    }

    .logo img {
        height: 50px;
    }

    h2 {
        font-size: 20px;
    }
}