body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background : #111;
    color: white;
    text-align: center;
    padding: 40 px;
}

.controls {
    margin-top: 30px;
}

/* VOLUME */
input[type="range"] {
    width: 200px;
    margin-top: 40px;
}

/* BUTTONS */
button {
    width: 150px;
    height: 200px;
    font-size: 30px;
    padding: 0;
    margin: 15px;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    background: #333;
    color: white;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

button:hover {
    background: #555;
}

button.active {
    background: linear-gradient(90deg, #ff4081, #0011ff);
    color: white;
    transform: scale(1.1);
    transition: 0.2s;
}

/* PROGRESS BAR */
#loopIndicator {
    width: 70%;
    height: 10px;
    background: #222;
    border-radius: 5px;
    overflow: hidden;
    margin: 20px auto;
    position: relative;
    border: 2px solid #444;
}

#loopProgress {
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, #ff4081, #0011ff);
    transition: width 0.05s linear;
}