body {
    font-family: 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, #3b6ea5, #5fa8d3);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    flex-direction: column;
    margin: 0;
}

/* HEADER */
.header-login {
    text-align: center;
    margin-bottom: 15px;
}

.header-login img {
    width: 120px;
    margin-bottom: -15px;
}

.header-login h3 {
    font-size: 25px;
    font-weight: 600;
    color: white;
    margin-top: 5px;
    margin-bottom: -5px;
}

/* CARD */
.card {
    background: white;
    padding: 30px;
    border-radius: 18px;
    width: 320px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    color: #333;
    animation: fadeIn 0.5s ease;
}

/* INPUT */
input {
    width: 93%;
    padding: 12px;
    margin: 10px 0;
    border-radius: 8px;
    border: none;
    background: #f1f5f9;
    outline: none;
    transition: 0.2s;
    display: block;
}

input:focus {
    background: #e2ecf7;
}

/* BUTTON */
button {
    width: 100%;
    padding: 12px;
    background: #3b6ea5;
    border: none;
    border-radius: 8px;
    color: white;
    font-weight: bold;
    margin-top: 10px;
    transition: 0.2s;
}

button:hover {
    background: #2c5687;
    cursor: pointer;
}

/* ERROR */
.error {
    background: #ff4d4d;
    padding: 10px;
    border-radius: 8px;
    margin-bottom: 10px;
    font-size: 13px;
    text-align: center;
}

/* LINK */
a {
    color: #3b6ea5;
    text-decoration: none;
    font-size: 13px;
}

a:hover {
    text-decoration: underline;
}

/* ANIMASI */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(15px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}