/* Feed */
.feed-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.activity-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  padding: var(--space-md);
  transition: all var(--transition-fast);
}

.activity-card:hover {
  box-shadow: var(--shadow-md);
}

.activity-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
}

.activity-avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: var(--font-sm);
  flex-shrink: 0;
}

.activity-user-info {
  flex: 1;
  min-width: 0;
}

.activity-user-name {
  font-weight: 600;
  font-size: var(--font-sm);
}

.activity-time {
  font-size: var(--font-xs);
  color: var(--text-tertiary);
}

.activity-type-icon {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
}

.activity-type-icon .material-icons-round {
  font-size: 16px;
  color: white;
}

.activity-body {
  padding-left: 52px;
  margin-bottom: var(--space-sm);
}

.activity-description {
  font-size: var(--font-sm);
  color: var(--text-secondary);
  line-height: 1.5;
}

.activity-habit-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: var(--font-xs);
  font-weight: 500;
  margin-top: var(--space-sm);
}

.activity-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-left: 52px;
  padding-top: var(--space-sm);
  border-top: 1px solid var(--border-light);
}

.reactions-row {
  display: flex;
  gap: 4px;
}

.reaction-btn {
  padding: 4px 8px;
  border-radius: var(--radius-full);
  font-size: 14px;
  transition: all var(--transition-fast);
  background: var(--bg-tertiary);
  cursor: pointer;
  border: 1.5px solid transparent;
}

.reaction-btn:hover {
  transform: scale(1.15);
}

.reaction-btn.active {
  border-color: var(--primary-200);
  background: var(--primary-50);
}

.reaction-count {
  font-size: 11px;
  margin-left: 2px;
  font-weight: 600;
  color: var(--text-secondary);
}

.comment-btn {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: var(--font-xs);
  color: var(--text-tertiary);
  padding: 4px 8px;
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.comment-btn:hover {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
}

.comment-btn .material-icons-round {
  font-size: 16px;
}

/* Comments section */
.comments-section {
  padding-left: 52px;
  margin-top: var(--space-sm);
}

.comment-item {
  display: flex;
  gap: var(--space-sm);
  padding: var(--space-sm) 0;
}

.comment-avatar {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 600;
  flex-shrink: 0;
}

.comment-content {
  flex: 1;
  min-width: 0;
}

.comment-author {
  font-size: var(--font-xs);
  font-weight: 600;
}

.comment-text {
  font-size: var(--font-sm);
  color: var(--text-secondary);
  line-height: 1.4;
}

.comment-time {
  font-size: 10px;
  color: var(--text-tertiary);
  margin-top: 2px;
}

.comment-input-row {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-sm);
  padding-left: 52px;
}

.comment-input-row .form-input {
  flex: 1;
  padding: 8px 12px;
  font-size: var(--font-sm);
}

.comment-send-btn {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: var(--primary-600);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.comment-send-btn:hover {
  background: var(--primary-700);
}

.comment-send-btn .material-icons-round {
  font-size: 18px;
}

/* Optimistic update animations */
.comment-new {
  animation: commentSlideIn 0.3s ease;
}

@keyframes commentSlideIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.reaction-bounce {
  animation: reactionBounce 0.3s ease;
}

@keyframes reactionBounce {
  0% { transform: scale(1); }
  50% { transform: scale(1.25); }
  100% { transform: scale(1); }
}

.comment-count-text {
  min-width: 8px;
}