#loader-container {
    display: none; /* Anfangs verstecken */
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5); /* Hintergrund unscharf machen */
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999; /* sicherstellen, dass es über allem anderen liegt */
}

#loader {
    border: 8px solid #f3f3f3; /* Hellgrauer Rand */
    border-top: 8px solid #3498db; /* Blaue Ladeanzeige */
    border-radius: 50%;
    width: 60px;
    height: 60px;
    animation: spin 1s linear infinite; /* Animationsdrehung */
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}
.fc-toolbar-title {
    color: black;
    font-family: 'Lato', sans-serif;
}
.white {
    color: white;
}
.fc-event {
    font-size: 18px;
}
.fc-event-title {
    white-space: normal;
}
.fc-event-title-container {
    height: 25px;
    white-space: normal;
}
.button {
    position: fixed;
    left: 0.1%;
    top: 0.1%;
    background-color: #2e3cb8;
    border: none;
    color: white;
    padding: 10px 20px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 18px;
    margin: 4px 2px;
    cursor: pointer;
}
.button-blue:hover {
    background: #21388c;
}
.hidden {
    display: none;
}

.button-logout {
    position: fixed;
    right: 0.1%;
    top: 0.1%;
    background-color: #2e3cb8;
    border: none;
    color: white;
    padding: 10px 20px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 15px;
    margin: 4px 2px;
    cursor: pointer;
}

.button-admin {
    position: fixed;
    left: 0.1%;
    top: 0.1%;
    background-color: #2e3cb8;
    border: none;
    color: white;
    padding: 10px 20px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 15px;
    margin: 60px 2px;
    cursor: pointer;
}