/* Styles für Sidebar-Toggle-Buttons */
.sidebar-toggle-btn, .sidebar-show-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, #3498db 0%, #6dd5fa 100%);
    color: #fff;
    border: none;
    box-shadow: 0 2px 8px rgba(0,0,0,0.12);
    font-size: 1.3em;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s, box-shadow 0.2s, transform 0.1s;
    margin: 0.5em;
    outline: none;
    z-index: 1100;
}
/* Floating-Button für das Ausklappen der Sidebar */
#sidebar-fab.sidebar-toggle-btn {
    position: fixed;
    right: 30px;
    top: 110px;
    width: 48px;
    height: 48px;
    margin: 0;
    box-shadow: 0 4px 16px rgba(0,0,0,0.18);
    z-index: 3000;
}
.sidebar-toggle-btn:hover, .sidebar-show-btn:hover {
    background: linear-gradient(135deg, #217dbb 0%, #4fc3f7 100%);
    box-shadow: 0 4px 16px rgba(0,0,0,0.18);
    transform: scale(1.08);
}
.sidebar-toggle-btn span, .sidebar-show-btn span {
    width: 100%;
    text-align: center;
    display: block;
    line-height: 44px;
    font-size: 1.1em;
    font-weight: 600;
    letter-spacing: 0.02em;
}