body {
    font-family: 'Poppins', sans-serif;
    margin: 0;
    overflow: hidden;
}

.my-material-icons {
    font-size: 50px;
    cursor: pointer;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

#gradient {
    width: auto;
    height: 100vh;
    animation-name: fade-in;
    animation-duration: 0.5s;
    animation-timing-function: ease-out;
    animation-fill-mode: forwards;
}

.container {
    width: 100vw;
    height: 100vh;
    display: flex;
    flex-direction: column; 
    justify-content: center;
    align-items: center;
}

#start-btn {
    position: relative;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 3vw;
}

#start-btn:hover {
    cursor: pointer;
}

#start-btn:active {
    transform: translate(-50%, -50%) scale(0.95);
}

#hero-heading {
    position: relative;
    font-size: 5vw;
    color: white;
    text-align: center;
    width: 100%;
    margin: 0;
    padding-bottom: 5%;
}

@keyframes fade-in {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.controls {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1000;
    display: flex;
    gap: 10px;
    opacity: 0.3;
    transition: opacity 0.3s;
}

.controls:hover {
    opacity: 1;
}

.control-btn {
    background: rgba(0, 0, 0, 0.5);
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px;
    color: white;
    transition: background 0.3s;
}

.control-btn:hover {
    background: rgba(0, 0, 0, 0.8);
}