/* --- Definisi Variabel Warna & Font --- */
:root {
    --primary-dark: #000f39; /* [DIPERBARUI] Warna dasar diganti */
    --primary-accent: #4a90e2; /* Biru cerah sebagai aksen */
    --background-light: #010e39;
    --container-bg: #ffffff;
    --border-color: #dee2e6;
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --font-family: 'Inter', sans-serif;
}

/* --- Reset & Pengaturan Dasar Body --- */
body {
    font-family: var(--font-family);
    background-color: var(--background-light);
    color: var(--text-primary);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    padding: 20px;
    box-sizing: border-box;
}

/* --- Kontainer Utama --- */
.container {
    background-color: var(--container-bg);
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
    text-align: center;
    max-width: 420px;
    width: 100%;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

/* --- Header & Teks --- */
.header {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
}
.header-icon {
    width: 32px;
    height: 32px;
}
.container h1 {
    color: var(--primary-dark);
    font-size: 28px;
    font-weight: 600;
    margin: 0;
}
.container p {
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.6;
}

/* --- Area Input --- */
.input-wrapper {
    position: relative;
    margin-bottom: 24px;
}
.input-wrapper .bi {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    font-size: 20px;
}
#qr-text {
    width: 100%;
    padding: 14px 14px 14px 50px; /* Ruang untuk ikon */
    border: 1px solid var(--border-color);
    border-radius: 10px;
    font-size: 16px;
    box-sizing: border-box;
    transition: border-color 0.3s, box-shadow 0.3s;
}
#qr-text:focus {
    outline: none;
    border-color: var(--primary-accent);
    box-shadow: 0 0 0 4px rgba(74, 144, 226, 0.15);
}
#qr-text::placeholder {
    color: #adb5bd;
}

/* --- Kontainer QR Code --- */
#qr-code-container {
    background-color: #f8f9fa;
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    padding: 20px;
    min-height: 256px;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: border-color 0.3s;
}

/* [DIPERBARUI] Menghapus padding, karena border dibuat oleh JS */
#qr-code img, #qr-code canvas {
    background-color: white;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}

/* --- Pesan di dalam Kontainer QR --- */
#qr-message {
    display: flex; /* Dibuat flex agar bisa disembunyikan dengan benar */
    color: var(--text-secondary);
    flex-direction: column;
    align-items: center;
    gap: 10px;
}
#qr-message .bi {
    font-size: 48px;
    color: #ced4da;
}
#qr-message p {
    margin: 0;
    font-size: 14px;
}

/* --- Tombol Aksi --- */
#action-buttons {
    margin-top: 24px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}
.btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 12px;
    font-size: 16px;
    font-weight: 500;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
}
.btn .bi {
    font-size: 18px;
}

/* Gaya Tombol Primer (Unduh) */
.btn-primary {
    background-color: var(--primary-accent);
    color: white;
}
.btn-primary:hover {
    background-color: #357ABD;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(74, 144, 226, 0.2);
}

/* Gaya Tombol Sekunder (Salin) */
.btn-secondary {
    background-color: var(--container-bg);
    color: var(--primary-dark);
    border: 1px solid var(--border-color);
}
.btn-secondary:hover {
    background-color: #e9ecef;
    border-color: #adb5bd;
    transform: translateY(-2px);
}

/* [DIPERBAIKI] Aturan untuk menyembunyikan elemen, kini lebih spesifik */
#action-buttons.hidden, #qr-message.hidden {
    display: none;
}