body {
    font-family: sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    background-color: #f9f9f9;
}

.container {
    text-align: center;
}

.progress-ring {
    position: relative;
    width: 240px;
    height: 240px;
}

.progress-ring__svg {
    transform: rotate(-90deg);
    width: 100%;
    height: 100%;
}

.progress-ring__circle {
    transition: stroke-dashoffset 0.35s;
    transform: rotate(0.25turn);
    transform-origin: 50% 50%;
}

#cooldownButton {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);

    width: 120px;
    height: 120px;
    border-radius: 50%;
    border: none;
    background-color: #28a745;
    color: white;

    display: flex;
    align-items: center;
    justify-content: center;

    font-weight: bold;
    font-size: calc(10px + 0.3vw);
    /* responsive Schriftgröße */
    text-align: center;

    cursor: pointer;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: background-color 0.3s ease;
    padding: 6px;
    line-height: 1.2;
}

#cooldownButton:disabled {
    background-color: #94d3a2;
    cursor: not-allowed;
}