body {
    margin: 0;
    padding: 0;
    overflow: hidden;
    background: #0d0221;
    touch-action: none;
    font-family: 'Segoe UI', sans-serif;
    user-select: none;
    -webkit-user-select: none;
}

canvas {
    display: block;
    width: 100%;
    height: 100%;
}

#ui {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transition: opacity .3s;
}

.score {
    position: absolute;
    top: 40px;
    font-size: 48px;
    color: rgba(255, 255, 255, 1);
    font-weight: 800;
    text-shadow: 0 0 15px #f0f;
    z-index: 10;
    font-style: italic;
}

.msg {
    color: #fff;
    font-size: 24px;
    text-transform: uppercase;
    letter-spacing: 4px;
    text-shadow: 0 0 20px #0ff;
    text-align: center;
    background: rgba(0, 0, 0, .6);
    padding: 20px;
    border: 1px solid #0ff;
    border-radius: 10px;
    backdrop-filter: blur(5px);
}

.sub {
    font-size: 14px;
    color: #0ff;
    margin-top: 10px;
    letter-spacing: 2px;
}

.hidden {
    opacity: 0;
    pointer-events: none;
}

#btn {
    margin-top: 20px;
    pointer-events: auto;
    background: linear-gradient(45deg, #0ff, #f0f);
    border: none;
    color: #fff;
    padding: 15px 40px;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 2px;
    cursor: pointer;
    clip-path: polygon(10% 0, 100% 0, 100% 70%, 90% 100%, 0 100%, 0 30%);
    transition: transform 0.1s;
}

#btn:active {
    transform: scale(.95);
}