* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: #ffffff;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.container {
    display: flex;
    gap: 40px;
    align-items: flex-start;
    max-width: 1400px;
    width: 100%;
}

.controls-panel {
    display: flex;
    flex-direction: column;
    gap: 30px;
    padding: 20px 0;
}

.toggle-group {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    min-width: 200px;
    transition: opacity 0.3s ease;
}

.toggle-group.inactive {
    opacity: 0.4;
    pointer-events: none;
}

.toggle-label {
    font-size: 16px;
    color: #000000;
    cursor: pointer;
    user-select: none;
    transition: color 0.3s ease;
}

.toggle-group.inactive .toggle-label {
    color: #999999;
}

.toggle-switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 28px;
    cursor: pointer;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: transparent;
    border: 2px solid #000000;
    border-radius: 34px;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 4px;
    bottom: 3px;
    background-color: #000000;
    border-radius: 50%;
    transition: transform 0.3s ease, background-color 0.3s ease;
}

.toggle-switch input:checked + .toggle-slider {
    background-color: #000000;
}

.toggle-switch input:checked + .toggle-slider:before {
    transform: translateX(22px);
    background-color: #ffffff;
}

.toggle-switch input:not(:checked) + .toggle-slider {
    background-color: transparent !important;
}

.toggle-switch input:not(:checked) + .toggle-slider:before {
    background-color: #000000 !important;
    transform: translateX(0) !important;
}

.toggle-group.inactive .toggle-slider {
    border-color: #999999;
}

.toggle-group.inactive .toggle-slider:before {
    background-color: #999999 !important;
}

.media-container {
    position: relative;
    flex: 1;
    width: 80%;
    height: 80%;
    max-width: 80%;
    max-height: 80%;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    border-radius: 8px 8px 0 0;
}

.start-image,
.video-element {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    background-color: #ffffff;
}

.start-image {
    z-index: 3;
    opacity: 1;
    pointer-events: none;
}

.video-element {
    z-index: 2;
    opacity: 0;
    display: none;
    pointer-events: none;
}

.video-element.playing {
    display: block;
    opacity: 1;
    pointer-events: auto;
}

.start-image.hidden {
    display: none;
    pointer-events: none;
    z-index: 0;
}

@media (max-width: 768px) {
    .container {
        flex-direction: column;
        align-items: center;
    }
    
    .controls-panel {
        width: 100%;
        max-width: 400px;
    }
}