body {
    font-family: sans-serif;
    background-color: #f4f4f4;
    color: #333;
    margin: 0;
    padding: 20px;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 100vh;
    align-items: center; /* Ini akan membantu jika konten tidak terlalu panjang */
}
.container {
    background-color: #fff;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 600px;
    min-height: 300px; /* Beri ruang minimal, sesuaikan jika perlu */
}
h1, h2 { color: #e84393; text-align: center; }
label { display: block; margin-top: 15px; margin-bottom: 5px; font-weight: bold; }
input[type="url"], input[type="text"], textarea {
    width: calc(100% - 22px);
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    box-sizing: border-box;
}
textarea { resize: vertical; }
button[type="submit"], #openGiftButton {
    background-color: #e84393;
    color: white;
    padding: 12px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    margin-top: 20px;
    display: block;
    width: 100%;
}
button[type="submit"]:hover, #openGiftButton:hover { background-color: #d83383; }
.alert { padding: 15px; margin-bottom: 20px; border: 1px solid transparent; border-radius: 4px; }
.alert-success { color: #155724; background-color: #d4edda; border-color: #c3e6cb; }
.alert-danger { color: #721c24; background-color: #f8d7da; border-color: #f5c6cb; }
.alert-danger ul { margin:0; padding-left: 20px; }
#teaserSection, #giftContentSection { text-align: center; }
#giftContentSection h2 { color: #2ecc71; }
.gift-item { background-color: #f9f9f9; padding: 15px; margin-top: 15px; border-radius: 5px; text-align: left; border: 1px dashed #ddd;}
#giftVideoContainer iframe { max-width: 100%; border-radius: 8px; }