body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f9;
    margin: 0;
    padding: 0;
    min-height: 100vh;
}

.header {
    background-color: #2c3e50;
    color: white;
    padding: 1rem 0;
    text-align: center;
    width: 100%;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
}

.header h1 {
    margin: 0;
    color: white;
}

.main-content {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    text-align: center;
    width: 80%;
    max-width: 800px;
}

h1 {
    color: #333;
}

form {
    margin-bottom: 20px;
}

input[type="file"] {
    margin-bottom: 10px;
}

input[type="submit"] {
    background-color: #007bff;
    color: #fff;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
}

input[type="submit"]:hover {
    background-color: #0056b3;
}

/* Center the video container and limit its size */
.video-container {
    width: 80%;
    max-width: 800px;
    aspect-ratio: 16/9;
    position: relative;
    margin: 20px auto;
}

.video-container video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

/* Style the debug information (optional) */
.video-debug {
    font-size: 0.9em;
    color: gray;
    text-align: center;
    margin-top: 10px;
}


.plot-container {
    margin-top: 20px;
}

.spinner {
    border: 4px solid #f3f3f3;
    border-radius: 50%;
    border-top: 4px solid #007bff;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 20px auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

#loading {
    text-align: center;
    margin: 20px 0;
}