/* Project Sidebar Styles */
/* Layout positioning handled by chat-style.css three-column layout */

/* Mobile login prompt */
.mobile-login-prompt {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 32px;
    text-align: center;
    height: 100%;
    background: var(--bg);
}

.login-prompt-icon {
    margin-bottom: 24px;
    color: var(--primary);
    opacity: 0.8;
}

.mobile-login-prompt h3 {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 12px 0;
}

.mobile-login-prompt p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.5;
    margin: 0 0 32px 0;
    max-width: 280px;
}

.mobile-login-btn {
    padding: 14px 32px;
    background: #216aa4;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 2px 8px rgba(33, 106, 164, 0.25);
}

.mobile-login-btn:hover {
    background: #1a5683;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(33, 106, 164, 0.35);
}

.mobile-login-btn:active {
    transform: translateY(0);
}

.project-sidebar {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    border-bottom: 1px solid var(--border-color, #333);
}

.sidebar-header h3 {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary, #fff);
}

.toggle-btn {
    background: none;
    border: none;
    color: var(--text-secondary, #999);
    cursor: pointer;
    font-size: 16px;
    padding: 4px 8px;
    border-radius: 4px;
    transition: background-color 0.2s;
}

.toggle-btn:hover {
    background-color: var(--hover-bg, rgba(255, 255, 255, 0.1));
}

/* Collapsed state - center toggle button */
#project-sidebar.collapsed .sidebar-header {
    justify-content: center;
    padding: 16px 8px;
}

#project-sidebar.collapsed .toggle-btn {
    margin: 0 auto;
}

.new-project-btn {
    margin: 16px;
    padding: 10px 16px;
    background: #216aa4;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: 0 2px 8px rgba(33, 106, 164, 0.25);
}

.new-project-btn:hover {
    background: #1a5683;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(33, 106, 164, 0.35);
}

.projects-list {
    flex: 1;
    overflow-y: auto;
    padding: 8px;
}

.project-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px;
    margin-bottom: 6px;
    background: var(--item-bg, rgba(255, 255, 255, 0.05));
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
    border: 1px solid transparent;
}

.project-item:hover {
    background: var(--item-hover-bg, rgba(255, 255, 255, 0.1));
    border-color: var(--border-hover, #444);
}

.project-item.active {
    background: #216aa4;
    border-color: #216aa4;
}

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

.project-title {
    font-size: 14px;
    font-weight: 500;
    color: #ffffff;
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.project-item.active .project-title {
    color: white;
}

.project-timestamp {
    font-size: 12px;
    color: #b0b0b0;
}

.project-item.active .project-timestamp {
    color: rgba(255, 255, 255, 0.8);
}

.delete-project-btn {
    background: none;
    border: none;
    color: #b0b0b0;
    cursor: pointer;
    font-size: 16px;
    padding: 4px 8px;
    border-radius: 4px;
    opacity: 0;
    transition: all 0.2s;
}

.project-item:hover .delete-project-btn {
    opacity: 1;
}

.delete-project-btn:hover {
    background-color: var(--danger-color, #f44336);
    color: white;
}

.project-item.active .delete-project-btn {
    color: rgba(255, 255, 255, 0.8);
}

.project-item.active .delete-project-btn:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: #b0b0b0;
}

.empty-state p {
    margin: 8px 0;
}

.empty-state .hint {
    font-size: 12px;
    color: var(--text-tertiary, #666);
}

/* Mobile responsive */
@media (max-width: 768px) {
    #project-sidebar {
        transform: translateX(-100%);
    }
    
    #project-sidebar.visible {
        transform: translateX(0);
    }
}