body {
    background: radial-gradient(circle at center, #222 60%, #111 100%);
    height: 100vh;
    width: 100vw;
    margin: 0;
    overflow: hidden;
}

canvas {
    display: block;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
}

#audio-ui {
    position: absolute;
    bottom: 20px;
    left: 20px;
    background: rgba(255, 255, 255, 0.92);
    padding: 24px 28px 18px 28px;
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    min-width: 340px;
    box-shadow: 0 2px 16px #0002;
    z-index: 10;
}

#audio-controls-row {
    display: flex;
    flex-direction: row;
    align-items: center;
    width: 100%;
    margin-bottom: 8px;
}

#audio-upload-label {
    cursor: pointer;
    display: flex;
    align-items: center;
    margin-right: 8px;
}

#audio-upload-label svg {
    display: block;
}

#audio-playpause {
    background: none;
    border: none;
    padding: 0;
    margin-right: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    outline: none;
}

#audio-playpause svg {
    display: block;
}

#audio-progress-container {
    width: 260px;
    height: 18px;
    background: linear-gradient(90deg, #eee, #ddd);
    border-radius: 9px;
    overflow: hidden;
    margin-left: 0;
    display: flex;
    align-items: center;
    cursor: pointer;
}

#audio-progress {
    height: 100%;
    background: linear-gradient(90deg, #0ff, #f0f, #ff0, #0f0, #f00, #00f);
    width: 0%;
    border-radius: 9px;
    transition: width 0.2s;
}

#audio-filename {
    font-family: 'Segoe UI', Arial, sans-serif;
    font-weight: 300;
    font-size: 1rem;
    color: #444;
    margin-top: 8px;
    margin-left: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 260px;
}