body {
    margin: 0;
    overflow: hidden;
    font-family: Arial;
    background: radial-gradient(circle at top, #2a0066, #0a001a);
}

.topbar {
    position: fixed;
    top: 0;
    width: 100%;
    height: 60px;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 15px;
    color: white;
    z-index: 1000;
}

.buttons {
    display: flex;
    gap: 10px;
}

.buttons button {
    padding: 10px 14px;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    background: linear-gradient(45deg, #00f0ff, #0066ff);
    color: white;
    box-shadow: 0 0 15px #00f0ff;
    transition: 0.2s;
}

.buttons button:hover {
    transform: scale(1.1);
    box-shadow: 0 0 25px #00f0ff;
}

canvas {
    position: absolute;
    top: 60px;
    left: 0;
    width: 100%;
    height: calc(100vh - 60px);
}