/* ============================================
   📰 Activity Feed Styles
   ============================================ */

/* View Mode Switcher */
.view-mode-switcher {
    display: flex;
    gap: var(--space-sm);
    padding: var(--space-sm);
    background-color: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-md);
}

.view-mode-button {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    border: none;
    border-radius: var(--radius-sm);
    background-color: transparent;
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.view-mode-button.active {
    background-color: var(--color-bg-secondary);
    color: var(--color-primary);
    box-shadow: var(--shadow-sm);
}

.view-mode-button:not(.active):hover {
    color: var(--color-text-primary);
}

/* Activity Filter Chips */
.activity-filter-chips {
    display: flex;
    gap: var(--space-xs);
    margin-bottom: var(--space-md);
    overflow-x: auto;
    padding: var(--space-xs) 0;
    scrollbar-width: none;
}

.activity-filter-chips::-webkit-scrollbar {
    display: none;
}

.filter-chip {
    display: inline-flex;
    align-items: center;
    padding: var(--space-xs) var(--space-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    background-color: var(--color-bg-secondary);
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    white-space: nowrap;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-chip.active {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

.filter-chip:not(.active):hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* Activity Feed List */
.activity-feed {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.activity-event {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    padding: var(--space-md);
    background-color: var(--color-bg-secondary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.activity-event:hover {
    background-color: var(--color-bg-tertiary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.activity-event-icon {
    font-size: 1.25rem;
    min-width: 28px;
    text-align: center;
}

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

.activity-event-text {
    font-size: 0.9375rem;
    color: var(--color-text-primary);
    line-height: 1.4;
    margin-bottom: var(--space-xs);
}

.activity-event-actor {
    font-weight: 600;
    color: var(--color-primary);
}

.activity-event-book {
    font-weight: 500;
    color: var(--color-text-primary);
}

.activity-event-meta {
    font-size: 0.8125rem;
    color: var(--color-text-tertiary);
    line-height: 1.3;
}

.activity-event-review {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    margin-top: var(--space-xs);
}

.activity-event-stars {
    display: inline-flex;
    align-items: center;
    color: var(--color-warning);
    font-size: 0.875rem;
}

.activity-event-review-text {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.activity-event-cover {
    width: 40px;
    height: 56px;
    min-width: 40px;
    border-radius: var(--radius-sm);
    background-size: cover;
    background-position: center;
    background-color: var(--color-bg-tertiary);
    box-shadow: var(--shadow-sm);
}

/* Empty State for Activity */
#activity-empty-state {
    margin-top: var(--space-lg);
}

/* Responsive */
@media (max-width: 768px) {
    .activity-event {
        padding: var(--space-sm);
    }
    
    .activity-event-icon {
        font-size: 1.125rem;
        min-width: 24px;
    }
    
    .activity-event-text {
        font-size: 0.875rem;
    }
}