/* Selection Mode */
.photo-item.selection-mode {
    cursor: pointer;
}

.photo-item .select-checkbox {
    position: absolute;
    top: 10px;
    left: 10px;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 2px solid white;
    background: rgba(0, 0, 0, 0.3);
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    cursor: pointer;
}

.photo-item.selected .select-checkbox {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.photo-item.selected .select-checkbox::after {
    content: '✓';
    color: white;
    font-size: 14px;
    font-weight: bold;
}

.photo-item.selected img,
.photo-item.selected video {
    transform: scale(0.9);
}

.photo-item.selected::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(102, 126, 234, 0.2);
    border: 4px solid var(--primary-color);
    border-radius: 12px;
    pointer-events: none;
    z-index: 15;
}

/* Bulk Action Bar */
.bulk-action-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: white;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    z-index: 100;
    box-shadow: var(--shadow-md);
    transform: translateY(-100%);
    transition: transform 0.3s ease;
}

.bulk-action-bar.active {
    transform: translateY(0);
}

.bulk-actions-left {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 18px;
    font-weight: 500;
}

.bulk-actions-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.close-selection-btn {
    background: none;
    border: none;
    padding: 8px;
    cursor: pointer;
    border-radius: 50%;
    color: var(--text-secondary);
}

.close-selection-btn:hover {
    background: var(--hover-bg);
    color: var(--text-primary);
}

.delete-selected-btn {
    background: #ff4757;
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s;
}

.delete-selected-btn:hover {
    background: #ff6b81;
    transform: translateY(-1px);
}