/* Pengaturan Dasar dan Font */
:root {
    --primary-color: #007BFF;
    --primary-hover-color: #0056b3;
    --secondary-color: #17a2b8;
    --secondary-hover-color: #117a8b;
    --background-color: #f4f7f6;
    --container-bg-color: #ffffff;
    --text-color: #333;
    --border-color: #ddd;
    --shadow-color: rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

/* Kontainer Utama */
.container {
    background-color: var(--container-bg-color);
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 10px 25px var(--shadow-color);
    width: 100%;
    max-width: 500px;
    text-align: center;
    transition: transform 0.3s ease;
}

.container:hover {
    transform: translateY(-5px);
}

/* Header */
header h1 {
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--primary-color);
}

header p {
    font-size: 1rem;
    color: #666;
    margin-bottom: 30px;
}

/* Form Input dan Tombol */
.input-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 30px;
}

#text-input {
    width: 100%;
    padding: 15px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    font-family: 'Poppins', sans-serif;
    transition: border-color 0.3s, box-shadow 0.3s;
}

#text-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.25);
}

#generate-btn, #print-btn {
    padding: 15px;
    border: none;
    border-radius: 8px;
    color: white;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.2s;
}

#generate-btn {
    background-color: var(--primary-color);
}

#generate-btn:hover {
    background-color: var(--primary-hover-color);
    transform: scale(1.02);
}

/* Tombol Print Baru */
#print-btn {
    background-color: var(--secondary-color);
}

#print-btn:hover {
    background-color: var(--secondary-hover-color);
    transform: scale(1.02);
}

.hidden {
    display: none;
}

/* Area Hasil QR Code */
.qr-code-container {
    margin: 0 auto;
    padding: 20px;
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    min-height: 280px;
    width: 280px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.placeholder-text {
    color: #999;
}

#qr-code-result img {
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
}

/* Footer */
footer {
    margin-top: 30px;
    font-size: 0.9rem;
    color: #aaa;
}

/* Area Print tersembunyi di layar biasa */
#print-area {
    display: none;
}


/* =========================================== */
/* === ATURAN KHUSUS UNTUK MENCETAK (PRINT) === */
/* =========================================== */
@media print {
    /* Atur ukuran kertas dan margin */
    @page {
        size: A4;
        margin: 1cm;
    }

    /* Sembunyikan semua elemen di body secara default */
    body * {
        visibility: hidden;
    }

    /* Tampilkan HANYA area print dan isinya */
    #print-area, #print-area * {
        visibility: visible;
    }

    #print-area {
        display: flex;
        flex-wrap: wrap;
        gap: 5mm; /* Jarak antar QR Code */
        position: absolute;
        left: 0;
        top: 0;
    }
    
    /* Atur ukuran setiap gambar QR Code */
    #print-area img {
        width: 3cm;
        height: 3cm;
    }
}


/* Desain Responsif untuk Mobile */
@media (max-width: 600px) {
    body {
        padding: 10px;
    }
    .container {
        padding: 25px;
    }
    header h1 {
        font-size: 2rem;
    }
    .qr-code-container {
        width: 100%;
        min-height: 250px;
    }
}