body {
    background-color: black;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    overflow: hidden;
    position: relative;
}

.button {
    padding: 1em 2em;
    border: none;
    border-radius: 5px;
    font-weight: bold;
    letter-spacing: 5px;
    text-transform: uppercase;
    cursor: pointer;
    color: #2c9caf;
    transition: all 1000ms;
    font-size: 15px;
    position: relative;
    overflow: hidden;
    outline: 2px solid #2c9caf;
    background-color: black;
    display: block;
    margin: auto;
    z-index: 10;
}

button:hover {
    color: #ffffff;
    transform: scale(1.1);
    outline: 2px solid #70bdca;
    box-shadow: 4px 5px 17px -4px #268391;
}

button::before {
    content: "";
    position: absolute;
    left: -50px;
    top: 0;
    width: 0;
    height: 100%;
    background-color: black;
    transform: skewX(45deg);
    z-index: -1;
    transition: width 1000ms;
}

button:hover::before {
    width: 250%;
}

/* Animierter Kreis für den Übergang */
.transition-circle {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 50px;
    height: 50px;
    background-color: #2c9caf;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    animation: expand 1.6s forwards ease-in-out;
    z-index: 5;
}

@keyframes expand {
    0% {
        width: 50px;
        height: 50px;
        opacity: 1;
    }
    100% {
        width: 300vw;
        height: 300vw;
        opacity: 1;
    }
}