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

body, html {
    height: 100%;
    width: 100%;
}

/* Background gambar abstrak yang mendukung efek glass */
.background-container {
    height: 100vh;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    background: url('https://images.unsplash.com/photo-1618005182384-a83a8bd57fbe?q=80&w=2564&auto=format&fit=crop') no-repeat center center/cover;
    position: relative;
}

/* Efek Glassmorphism */
.glass-login-box {
    width: 100%;
    max-width: 420px;
    padding: 50px 40px;
    background: rgba(255, 255, 255, 0.05); /* Transparan */
    backdrop-filter: blur(15px); /* Efek blur kaca */
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    color: #ffffff;
    margin: 20px;
}

.glass-login-box h2 {
    text-align: center;
    font-size: 28px;
    margin-bottom: 30px;
    font-weight: 600;
    letter-spacing: 1px;
}

.input-box {
    margin-bottom: 25px;
}

.input-box label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    letter-spacing: 0.5px;
}

.input-box input {
    width: 100%;
    padding: 12px 15px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 8px;
    color: #ffffff;
    font-size: 15px;
    outline: none;
    transition: all 0.3s ease;
}

.input-box input::placeholder {
    color: rgba(255, 255, 255, 0.6);
}

.input-box input:focus {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.8);
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.1);
}

.login-btn {
    width: 100%;
    padding: 14px;
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: 8px;
    color: white;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 10px;
}

.login-btn:hover {
    background: rgba(255, 255, 255, 0.4);
    transform: translateY(-2px);
}

.error-msg {
    color: #ff7675;
    text-align: center;
    margin-top: 15px;
    font-size: 14px;
    min-height: 20px;
}

/* Responsif untuk HP */
@media screen and (max-width: 480px) {
    .glass-login-box {
        padding: 40px 25px;
        margin: 15px;
    }
}