/* Styles pour le modal de commentaires hiérarchiques */
.timeline {
    position: relative;
    padding-left: 30px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: #dee2e6;
}

.timeline-item {
    position: relative;
    margin-bottom: 20px;
}

.timeline-item-right {
    margin-left: auto;
    margin-right: 0;
}

.timeline-marker {
    position: absolute;
    left: -22px;
    top: 10px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 2px solid #fff;
    box-shadow: 0 0 0 2px #dee2e6;
}

.timeline-content {
    margin-left: 0;
}

.avatar-sm {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: bold;
}

.attachment-item {
    transition: all 0.2s ease;
}

.attachment-item:hover {
    background-color: #f8f9fa;
    transform: translateY(-1px);
}

.text-sm {
    font-size: 0.875rem;
}

.font-weight-bold {
    font-weight: 600;
}

/* Styles pour les participants */
.participant-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    font-size: 14px;
}

/* Styles pour les fichiers joints */
.file-icon {
    font-size: 18px;
}

.file-item {
    border: 1px solid #dee2e6;
    border-radius: 8px;
    padding: 12px;
    transition: all 0.2s ease;
}

.file-item:hover {
    border-color: #007bff;
    box-shadow: 0 2px 4px rgba(0,123,255,0.1);
}

/* Responsive */
@media (max-width: 768px) {
    .timeline {
        padding-left: 20px;
    }
    
    .timeline::before {
        left: 10px;
    }
    
    .timeline-marker {
        left: -17px;
        width: 10px;
        height: 10px;
    }
}