:root {
    --bg-color: #121212;
    --panel-bg: #1e1e1e;
    --text-color: #ffffff;
}

body {
    font-family: system-ui, -apple-system, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 0;
    padding: 20px;
}

h2 { margin-bottom: 10px; text-align: center; }

#btn-toggle-controls {
    position: fixed;
    top: 14px;
    right: 14px;
    z-index: 2;
    background-color: #252525;
}

.controls-bar {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
    justify-content: center;
}

.controls-bar.controls-hidden {
    display: none !important;
}

button {
    background-color: #333;
    color: #fff;
    border: 1px solid #555;
    padding: 10px 18px;
    border-radius: 8px;
    cursor: pointer;
    font-family: inherit;
    font-weight: 600;
    transition: all 0.2s;
}

button:hover { background-color: #555; border-color: #777; }
button:active { transform: scale(0.95); }

#btn-playpause {
    background-color: #1a5c2b;
    border-color: #2e8b45;
}
#btn-playpause:hover { background-color: #2e8b45; }

.container {
    background: var(--panel-bg);
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.5);
}

canvas {
    border-radius: 8px;
    background-color: #000;
    cursor: none; 
    max-width: 100%;
}

.input_video { display: none; }

canvas:fullscreen {
    width: 100vw;
    height: 100vh;
    object-fit: contain;
    border-radius: 0;
    background-color: #000;
}