body {
    margin: 0;
    padding: 0;
    background-image: url('images/background.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: white;
    text-shadow: 0 0 5px rgba(0,0,0,0.6);
}
iframe.spotify {
    position: absolute;
    top: 10px;
    left: 10px;
    width: 350px;
    height: 80px;
    border: none;
    border-radius: 12px;
}
.top-right-wrapper {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 290px;
    text-align: center;
}
.top-right-image {
    width: 100%;
    height: auto;
    cursor: pointer;
}
.affiliate-note {
    margin-top: 5px;
    font-size: 12px;
    color: #ddd;
    opacity: 1;
    transition: opacity 0.5s ease;
}
.affiliate-note.hide {
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.5s ease;
}
.mode-buttons button {
    background-color: rgba(255, 255, 255, 0.2);
    border: 1px solid white;
    color: white;
    padding: 11.25px 22.5px;
    margin: 0 5.625px;
    border-radius: 22.5px;
    cursor: pointer;
    font-weight: 700;
    font-size: 112.5%;
}
.mode-buttons button:hover {
    background-color: white;
    color: black;
}
.mode-buttons button.active {
    background-color: white;
    color: black;
    font-weight: bold;
}
.timer {
    font-size: 112.5px;
    margin: 30px 0;
}
.controls .start-btn,
.controls .reset-btn {
    background-color: white;
    color: black;
    border: 1px solid white;
    padding: 11.25px 22.5px;
    margin: 0 5.625px;
    border-radius: 22.5px;
    cursor: pointer;
    font-weight: 700;
    font-size: 112.5%;
}
.controls .start-btn:hover,
.controls .reset-btn:hover {
    background-color: rgba(255, 255, 255, 0.2);
    color: white;
}
.fullscreen-btn {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    cursor: pointer;
    color: white;
    opacity: 1;
    transition: opacity 0.5s ease;
}
.fullscreen-btn path {
    fill: currentColor;
}
.fullscreen-btn:hover {
    color: lightgray;
}
.fullscreen-btn.hide {
    opacity: 0;
    pointer-events: none;
}
#snow-canvas {
    position: fixed;
    top: 0;
    left: 0;
    pointer-events: none;
    z-index: 9999;
}