body { font-family: 'Sarabun', sans-serif; background: #f4f4f4; display: flex; justify-content: center; min-height: 100vh; margin: 0; padding: 20px; }
.container { background: white; padding: 20px; border-radius: 10px; box-shadow: 0 5px 15px rgba(0,0,0,0.1); width: 100%; max-width: 600px; text-align: center; }
.video-container { width: 100%; height: 450px; background: black; border-radius: 8px; margin: 15px 0; overflow: hidden; }
video { width: 100%; height: 100%; object-fit: cover; }
input { padding: 10px; width: 60%; margin: 10px 0; border: 1px solid #ddd; border-radius: 4px; }
button, .btn { padding: 10px 20px; border: none; border-radius: 4px; cursor: pointer; color: white; text-decoration: none; display: inline-block; margin: 5px; }
.primary { background: #007bff; }
.secondary { background: #6c757d; }
button:disabled { background: #ccc; }
table { width: 100%; border-collapse: collapse; margin-top: 10px; }
th, td { border-bottom: 1px solid #ddd; padding: 10px; }