/**
 * Navigation - Sidebar style Notion
 */

/* Sidebar header */
.sidebar-header {
    padding: var(--spacing-3) var(--spacing-3);
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    border-bottom: 1px solid var(--color-border-default);
}

.sidebar-logo {
    width: 32px;
    height: 32px;
    background: var(--color-accent-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-sm);
    flex-shrink: 0;
}

.sidebar-title {
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-base);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Sidebar menu */
.sidebar-menu {
    padding: var(--spacing-2);
    flex: 1;
    overflow-y: auto;
}

.sidebar-section {
    margin-bottom: var(--spacing-4);
}

.sidebar-section-title {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: var(--spacing-2) var(--spacing-2);
}

.sidebar-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-2);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
    margin-bottom: 2px;
}

.sidebar-item:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.sidebar-item.active {
    background: var(--color-accent-light);
    color: var(--color-accent-primary);
}

.sidebar-item-icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.sidebar-item-label {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-item-badge {
    font-size: var(--font-size-xs);
    padding: 2px 6px;
    background: var(--color-accent-primary);
    color: white;
    border-radius: var(--radius-full);
    font-weight: var(--font-weight-medium);
}

/* Sidebar footer */
.sidebar-footer {
    padding: var(--spacing-3);
    border-top: 1px solid var(--color-border-default);
}

/* Toggle sidebar button (mobile) */
.sidebar-toggle {
    display: none;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
}

.sidebar-toggle:hover {
    background: var(--color-bg-hover);
}

@media (max-width: 1024px) {
    .sidebar-toggle {
        display: flex;
    }
}

/* Collapsed sidebar */
.app-sidebar.collapsed .sidebar-title,
.app-sidebar.collapsed .sidebar-section-title,
.app-sidebar.collapsed .sidebar-item-label,
.app-sidebar.collapsed .sidebar-item-badge {
    display: none;
}

.app-sidebar.collapsed .sidebar-item {
    justify-content: center;
}

.app-sidebar.collapsed .sidebar-header {
    justify-content: center;
}

/* Header navigation */
.header-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
}

.header-breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.header-breadcrumb-separator {
    color: var(--color-text-tertiary);
}

.header-breadcrumb-item {
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}

.header-breadcrumb-item:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.header-breadcrumb-item.current {
    color: var(--color-text-primary);
    font-weight: var(--font-weight-medium);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    margin-left: auto;
}

/* Tabs navigation */
.tabs {
    display: flex;
    gap: var(--spacing-1);
    border-bottom: 1px solid var(--color-border-default);
    padding: 0 var(--spacing-4);
}

.tab {
    padding: var(--spacing-3) var(--spacing-4);
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-medium);
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: all var(--transition-fast);
}

.tab:hover {
    color: var(--color-text-primary);
}

.tab.active {
    color: var(--color-accent-primary);
    border-bottom-color: var(--color-accent-primary);
}