/* Reset dasar */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #2c3e50, #34495e); /* Gradient mewah */
    margin: 0;
    padding: 0;
    color: #ecf0f1; /* Warna teks cerah */
}

h2 {
    text-align: center;
    margin-top: 40px;
    color: #f39c12; /* Warna emas untuk judul */
    font-size: 2em;
}

/* Form */
form#formCek {
    max-width: 400px;
    margin: 20px auto;
    display: flex;
    gap: 10px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.9); /* Background transparan */
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

form#formCek input[type="text"] {
    flex: 1;
    padding: 12px;
    font-size: 16px;
    border: 1px solid #3498db;
    border-radius: 5px;
    background-color: #ecf0f1;
    color: #333;
    transition: border 0.3s ease, background-color 0.3s ease;
}

form#formCek input[type="text"]:focus {
    outline: none;
    border-color: #f39c12; /* Fokus dengan warna emas */
    background-color: #ffffff;
}

form#formCek button {
    background-color: #3498db;
    color: white;
    padding: 12px 18px;
    border: none;
    font-weight: bold;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s ease, transform 0.2s ease;
}

form#formCek button:hover {
    background-color: #2980b9;
    transform: translateY(-2px); /* Efek hover naik sedikit */
}

form#formCek button:active {
    transform: translateY(1px); /* Efek ketika tombol ditekan */
}

/* Hasil */
#hasilnya {
    max-width: 600px;
    margin: 20px auto;
    background: #ffffff;
    border-left: 5px solid #f39c12; /* Warna emas */
    padding: 20px;
    border-radius: 8px;
    white-space: pre-wrap;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

/* Spinner */
#spinner {
    display: none;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #f39c12; /* Spinner dengan warna emas */
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 10001;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Overlay pengunci */
#overlay {
    display: none;
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.5); /* Overlay gelap sedikit lebih transparan */
    z-index: 10000;
}

/* Kelas body untuk menonaktifkan interaksi */
body.blocked {
    overflow: hidden;
    pointer-events: none;
}