body {
    font-family: 'Sarabun', sans-serif;
    background-color: #f0f2f5;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
}
.container {
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    text-align: center;
    max-width: 650px;
    width: 100%;
}
.video-container {
    width: 100%;
    max-width: 600px;
    height: 450px;
    margin: 20px auto;
    background: #000;
    border-radius: 8px;
    overflow: hidden;
    position: relative;
}
video { width: 100%; height: 100%; object-fit: cover; }
h2 { display: flex; align-items: center; justify-content: center; gap: 10px; color: #333; }
input { padding: 12px; width: 60%; margin-right: 5px; border: 1px solid #ddd; border-radius: 6px; }
button { padding: 12px 20px; background: #007bff; color: white; border: none; border-radius: 6px; cursor: pointer; font-size: 16px; }
button:disabled { background: #ccc; }
#status, #loading { margin-top: 15px; font-size: 18px; color: #555; }
.link { display: block; margin-top: 20px; color: #666; text-decoration: none; }