body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Arial", sans-serif;
    background: transparent;
    overflow: hidden;
}

h1 {
    font-size: 18px;
    margin: 0 0 10px;
    color: #333;
}

h2 {
    font-size: 16px;
    margin: 10px 0 5px;
    color: #444;
}

p {
    color: #6b7280;
    font-size: 14px;
    margin: 5px 0;
}

.card {
    max-width: 640px;
    margin: 10px auto;
    padding: 20px;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.card p:last-child {
    margin-bottom: 0;
}

#videoPreview, #canvasOutput {
    position: absolute;
    top: 0;
    left: 0;
    width: 1920px;
    height: 1080px;
    object-fit: cover;
    z-index: 1;
}

#controlPanel {
    position: relative;
    z-index: 2;
    display: none; /* Hidden by default for OBS */
}

#status, #noVideo {
    font-size: 14px;
    color: #dc2626;
    text-align: center;
    margin-top: 10px;
}

input[type="range"] {
    width: 100%;
    margin: 8px 0;
    accent-color: #3b82f6;
}

input[type="radio"],
input[type="checkbox"] {
    margin-right: 8px;
    accent-color: #3b82f6;
}

label {
    font-size: 14px;
    color: #374151;
}

button {
    padding: 8px 16px;
    background: #3b82f6;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.2s;
}

button:hover {
    background: #2563eb;
}

#previewToggle {
    position: fixed;
    top: 10px;
    right: 10px;
    z-index: 3;
}

@media (max-width: 640px) {
    .card {
        margin: 10px;
        padding: 15px;
    }
}