/* === Reset & Body === */
body {
    font-family: Arial, sans-serif;
    background: linear-gradient(135deg, #74ebd5, #ACB6E5);
    margin: 0;
    padding: 0;
}

/* === Container Utama === */
.container {
    max-width: 400px;
    margin: 80px auto;
    padding: 25px;
    background: #fff;
    border-radius: 15px;
    box-shadow: 0px 6px 15px rgba(0,0,0,0.2);
    text-align: center;
}

/* === Judul === */
.container h2 {
    margin-bottom: 20px;
    color: #333;
}

/* === Label & Input === */
label {
    display: block;
    margin-top: 15px;
    font-weight: bold;
    text-align: left;
    color: #444;
}

input[type="number"],
input[type="text"],
select {
    width: 100%;
    padding: 10px;
    margin-top: 5px;
    border: 1px solid #bbb;
    border-radius: 8px;
    font-size: 14px;
}

/* === Tombol Submit === */
input[type="submit"] {
    margin-top: 20px;
    padding: 12px;
    width: 100%;
    background: #00c6ff;
    border: none;
    color: white;
    font-size: 16px;
    border-radius: 8px;
    cursor: pointer;
    transition: 0.3s;
}

input[type="submit"]:hover {
    background: #0072ff;
}

/* === Hasil & Error === */
.result {
    margin-top: 25px;
    font-size: 18px;
    font-weight: bold;
    color: #222;
}

.error {
    margin-top: 20px;
    color: red;
    font-weight: bold;
}