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

body {
    min-height: 100vh;
    background: #000000;
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: stretch;
    overflow-x: hidden;
}

.container {
    position: relative;
    width: 100%;
    max-width: 500px;
    min-height: 100vh;
    padding: 30px 20px;
    background: #0a0a0a;
    text-align: center;
}

/* Garis atas & bawah mepet layar */
.container::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-top: 3px solid #00ff00;
    border-bottom: 3px solid #00ff00;
    pointer-events: none;
}

h1 {
    color: #00ff00;
    font-size: 6vw;
    margin-bottom: 10px;
}

.info {
    font-size: 4vw;
    color: #cccccc;
    margin-bottom: 15px;
}

.primbon {
    margin-top: 15px;
    padding: 15px;
    border-radius: 10px;
    background: #111111;
    color: #00ff00;
    font-size: 3.8vw;
    white-space: pre-line;
    text-align: left;
    border: 1px solid #00ff00;
}

input[type="date"] {
    margin-top: 15px;
    padding: 10px;
    width: 100%;
    border: 1px solid #00ff00;
    border-radius: 8px;
    background: #000000;
    color: #00ff00;
    font-size: 16px;
}

button {
    margin-top: 10px;
    padding: 10px;
    width: 100%;
    border: 1px solid #00ff00;
    border-radius: 8px;
    background: #001a00;
    color: #00ff00;
    font-weight: bold;
    font-size: 16px;
    cursor: pointer;
}

button:hover {
    background: #003300;
}

/* Ukuran lebih besar */
@media (min-width: 768px) {
    h1 { font-size: 28px; }
    .info { font-size: 16px; }
    .primbon { font-size: 14px; }
}