/* Container */
.slot-group {
    margin-bottom: 12px;
    border-radius: 8px;
    background: #ffffff;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    overflow: hidden;
}

/* Summary als Card */
.slot-group summary {
    list-style: none;
    cursor: pointer;
    padding: 14px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-weight: 600;
    background: #f7f8fa;
    transition: background 0.2s ease;
}

/* Hover */
.slot-group summary:hover {
    background: #eef1f5;
}

/* Marker entfernen */
.slot-group summary::-webkit-details-marker {
    display: none;
}

/* Zeittext */
.slot-time {
    font-size: 15px;
    color: #333;
}

/* Chevron */
.slot-chevron {
    width: 10px;
    height: 10px;
    border-right: 2px solid #666;
    border-bottom: 2px solid #666;
    transform: rotate(45deg);
    transition: transform 0.25s ease;
}

/* Offen-Zustand */
.slot-group[open] summary {
    background: #e9edf3;
}

.slot-group[open] .slot-chevron {
    transform: rotate(-135deg);
}

/* Slot-Liste */
.slot-group-list {
    padding: 12px 16px 16px;
    background: #fff;
}