/* ===============================================
   SIDEBAR NAVIGATION COMPONENT
   Hierarchical navigation with collapsible sections
   =============================================== */

/* Sidebar visual styling (layout is in base.css) */
.sidebar {
    background-color: var(--bg-white);
    border-right: 1px solid var(--border-light);
    transition: var(--sidebar-transition);
    border-top-right-radius: var(--radius-2xl);
    border-bottom-right-radius: var(--radius-2xl);
    box-shadow: var(--shadow-sm);
    position: relative;
    z-index: 50;
}

.sidebar-navigation {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.sidebar-nav {
    flex: 1;
    padding: 0 0 var(--space-lg) 0;
    overflow-x: hidden;
    overflow-y: auto;
}

/* Hamburger Menu Toggle - At Top of Sidebar */
.sidebar-toggle {
    border-bottom: 1px solid var(--border-light);
    margin-bottom: var(--space-sm);
}

.sidebar-toggle .nav-label {
    display: none;
}

.sidebar-toggle .nav-icon {
    transition: none;
}

.nav-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 1px;
}

/* ===============================================
   HIERARCHICAL NAVIGATION (Collapsible Locations)
   =============================================== */

/* Location group container */
.nav-group {
    display: flex;
    flex-direction: column;
}

/* Location toggle (parent item) */
.nav-group-toggle {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    padding: 4px var(--space-sm) 4px var(--space-sm);
    margin: 0 var(--space-xs) 2px var(--space-xs);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background-color 0.15s var(--ease-out), color 0.15s var(--ease-out);
    color: var(--text-muted);
    font-weight: var(--font-weight-medium);
    font-size: var(--text-sm);
    position: relative;
    height: 32px;
    text-decoration: none;
    outline: none;
    background: none;
    border: none;
    width: calc(100% - 8px);
    text-align: left;
    font-family: inherit;
}

.nav-group-toggle:hover {
    background-color: rgba(0, 0, 0, 0.075);
    color: var(--text-secondary);
}

.nav-group-toggle:hover .nav-expand-icon {
    color: var(--text-body);
}

.nav-group-toggle:focus-visible {
    outline: none;
    box-shadow: 0 0 0 0.25rem rgba(22, 163, 74, 0.25);
    z-index: 10;
}

/* Location metadata badge */
.nav-meta {
    font-size: 11px;
    color: var(--text-light);
    background-color: rgba(0, 0, 0, 0.05);
    padding: 2px 6px;
    border-radius: 10px;
    margin-left: 6px;
    font-weight: var(--font-weight-semibold);
    line-height: 1;
    pointer-events: none;
    white-space: nowrap;
    flex-shrink: 0;
}

/* Expand/collapse chevron - FIXED RIGHT POSITION */
.nav-expand-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    margin-left: auto;
    flex-shrink: 0;
    transition: transform 0.2s var(--ease-out);
    color: var(--text-muted);
    pointer-events: none;
}

.nav-group-toggle[aria-expanded="true"] .nav-expand-icon {
    transform: rotate(90deg);  /* Right arrow → Down arrow */
}

/* ============= CSS GRID TRANSITION PATTERN ============= */
.nav-submenu-container {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows 0.3s var(--ease-out);
}

.nav-submenu-container.expanded {
    grid-template-rows: 1fr;
}

.nav-submenu {
    list-style: none;
    padding: 0;
    margin: 0;
    overflow: hidden;
}

/* ============= SUBMENU ITEMS ============= */
.nav-subitem {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    padding: 4px var(--space-sm) 4px 32px;
    margin: 0 var(--space-xs) 1px var(--space-xs);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background-color 0.15s var(--ease-out), color 0.15s var(--ease-out);
    color: var(--text-muted);
    font-weight: var(--font-weight-medium);
    font-size: 13px;
    height: 30px;
    text-decoration: none;
    outline: none;
    border: none;
    background: none;
    width: calc(100% - 8px);
    text-align: left;
    font-family: inherit;
}

.nav-subitem:hover {
    background-color: rgba(0, 0, 0, 0.075);
    color: var(--text-secondary);
}

.nav-subitem.active {
    background-color: rgba(22, 163, 74, 0.12);
    color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
}

.nav-subitem.active .nav-icon {
    color: var(--color-primary);
}

.nav-subitem:focus-visible {
    outline: none;
    box-shadow: 0 0 0 0.25rem rgba(22, 163, 74, 0.25);
    z-index: 10;
}

.nav-subitem .nav-icon {
    font-size: 16px;
    width: 20px;
    height: 20px;
    margin-right: 12px;
    flex-shrink: 0;
}

/* ============= COLLAPSED SIDEBAR ============= */
.sidebar[data-state="collapsed"] .nav-meta,
.sidebar[data-state="collapsed"] .nav-expand-icon {
    display: none;
}

.sidebar[data-state="collapsed"] .nav-label {
    opacity: 0;
    width: 0;
    overflow: hidden;
    margin: 0;
}

.sidebar[data-state="collapsed"] .nav-item {
    justify-content: flex-start;
    padding: 4px 8px;
}

/* CRITICAL: Hamburger stays at same position - overrides generic nav-item */
.sidebar[data-state="collapsed"] .sidebar-toggle {
    padding: 4px 8px;
}

.sidebar[data-state="collapsed"] .nav-icon {
    margin-right: 0;
}