:root {
    --color1: #1db954;
    --color2: #191414;
    --color3: #535353;
}
body,
html {
    margin: 0;
    padding: 0;
    height: 100vh;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: white;
    overflow: hidden;
    background: linear-gradient(
        45deg,
        var(--color1),
        var(--color2),
        var(--color3)
    );
    background-size: 400% 400%;
    animation: gradientBG 15s ease infinite;
    transition: background 1.5s ease;
}
@keyframes gradientBG {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}
#progress-container {
    position: absolute;
    top: 0;
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.2);
}
#progress-bar {
    height: 100%;
    width: 0%;
    background: white;
}
#date-display,
#time-display {
    position: absolute;
    top: 25px;
    font-weight: 500;
}
#date-display {
    left: 30px;
}
#time-display {
    right: 30px;
}
.center-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    text-align: center;
}
#track-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 25px;
    text-transform: uppercase;
    text-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}
#cover-art {
    width: 350px;
    height: 350px;
    object-fit: cover;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    margin-bottom: 25px;
    border-radius: 4px;
}
#artist-name {
    font-size: 1.2rem;
    opacity: 0.9;
}