@import url('https://fonts.googleapis.com/css2?family=Jura:wght@700&display=swap');

body, html {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    background-color: #111;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: 'Jura', sans-serif;
    transition: background-color 0.1s;
}

.metronome-container {
    position: relative;
    width: 100px;
    height: 300px;
}

.base {
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 50px;
    background: #222;
    border-radius: 10px 10px 0 0;
    box-shadow: 0 -5px 20px rgba(0,0,0,0.5);
    z-index: 2;
}

.arm {
    position: absolute;
    bottom: 25px; /* pivot point */
    left: 50%;
    transform-origin: bottom center;
    width: 10px;
    height: 250px;
    background: #fff;
    margin-left: -5px;
    z-index: 1;
    animation: swing 2s infinite alternate ease-in-out;
    box-shadow: 0 0 20px #fff;
}

.weight {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 30px;
    height: 30px;
    background: #fff;
    border-radius: 5px;
    box-shadow: 0 0 20px #fff;
}

@keyframes swing {
    0% { transform: rotate(-45deg); }
    100% { transform: rotate(45deg); }
}

.tempo-display {
    position: absolute;
    top: 20%;
    font-size: 5rem;
    color: #fff;
    letter-spacing: 20px;
    opacity: 0.5;
}