/*prevent FOUC on mobile when using sidebar */
.dwc-mobile :is(.bricks-is-frontend.brx-header-left, .bricks-is-frontend.brx-header-right) #brx-header {
  position: relative;
  inline-size: 100%;
  flex-direction: column;
}

.dwc-mobile .bricks-is-frontend:is(.brx-header-left, .brx-header-right) :is(#brx-content, #brx-footer) {
  margin-inline-start: 0;
}

/*prevent FOUC on desktop when using sidebar */
.bricks-is-frontend:is(.brx-header-left, .brx-header-right):not(.show-nav) .dwc-nav-wrapper {
  display: none;
}

/*=== sidebar css ===*/
html:not(.dwc-mobile) :is(.brx-header-left, .brx-header-right):not([data-builder-window]) #brx-header {
  flex-direction: column;
  box-shadow: 0px 0px 2px rgba(0, 0, 0, 0.7);  
}

html:not(.dwc-mobile) :is(.brx-header-left, .brx-header-right):not([data-builder-window]).no-scroll {
  overflow: visible;
}

html:not(.dwc-mobile) :is(.brx-header-left, .brx-header-right):not([data-builder-window]) #brx-header .dwc-nest-menu.brxe-nav-nested .brx-nav-nested-items {
  max-block-size: 100dvb;
  padding-block-end: 12rem;
  overscroll-behavior: contain;
}

html:not(.dwc-mobile) :is(.brx-header-left, .brx-header-right):not([data-builder-window]) #brx-header .dwc-nav-wrapper {
  position: relative;
  overflow: hidden;
  block-size: 100%;
  transform: translateX(0%);
  visibility: visible;
}

html:not(.dwc-mobile) :is(.brx-header-left, .brx-header-right):not([data-builder-window]) .dwc-nest-menu .brxe-toggle {
  display: none !important;
}

html:not(.dwc-mobile) :is(.brx-header-left, .brx-header-right):not([data-builder-window]) #brx-header .dwc-nest-menu {
  display: flex;
  flex-direction: column;
}

html:not(.dwc-mobile) :is(.brx-header-left, .brx-header-right):not([data-builder-window]) #brx-header .dwc-nest-header > div {
  display: flex;
  grid-template-columns: 1fr;
  block-size: 100%;
  flex-direction: column;
  justify-content: flex-start;
}

html:not(.dwc-mobile) :is(.brx-header-left, .brx-header-right):not([data-builder-window]) #brx-header .dwc-menu-wrap {
  inline-size: 100%;
  display: grid;
  grid-template-columns: 1fr;
  block-size: 100%;
}

html:not(.dwc-mobile) :is(.brx-header-left, .brx-header-right):not([data-builder-window]) #brx-header :is(.brxe-code, .dwc-nest-menu-overlay) {
  display: none;
}

html:not(.dwc-mobile) :is(.brx-header-left, .brx-header-right):not([data-builder-window]) #brx-header .dwc-nest-header {
  inline-size: 100%;
  padding-inline: 0;
}

html:not(.dwc-mobile) :is(.brx-header-left, .brx-header-right):not([data-builder-window]) #brx-header .dwc-nest-menu-top {
  min-block-size: var(--top-offset);
}

html:not(.dwc-mobile) :is(.brx-header-left, .brx-header-right):not([data-builder-window]) #brx-header .dwc-nest-menu:not( [data-hide-close-bar = 'true']) .brx-dropdown-content {
  inset-block-start: calc(var(--top-offset) + 1px) !important;

}

html:not(.dwc-mobile) :is(.brx-header-left, .brx-header-right):not([data-builder-window]) #brx-header .dwc-nest-menu:not( [data-submenu-reveal = 'slide']) .brx-dropdown-content:not([data-submenu-reveal = 'slide'] *) {  
  inset-inline-start: 0;
  inset-block-start: unset !important;
  overflow: hidden;
}

html:not(.dwc-mobile) :is(.brx-header-left, .brx-header-right):not([data-builder-window]) #brx-header .dwc-nest-menu:not([data-submenu-reveal = 'slide']) .brxe-dropdown:not(.open.active) > .brx-dropdown-content > .brxe-dropdown:not([data-submenu-reveal = 'slide'] *){
  visibility: hidden;  
}

html:not(.dwc-mobile) :is(.brx-header-left, .brx-header-right):not([data-builder-window]) #brx-header .dwc-nest-menu.brxe-nav-nested.brx-open .brxe-dropdown > .brx-dropdown-content {
  overscroll-behavior: contain;
  min-inline-size: var(--mobile-menu-width);

}

html:not(.dwc-mobile) :is(.brx-header-left, .brx-header-right):not([data-builder-window]) #brx-header .dwc-nest-menu .brxe-dropdown.open > .brx-submenu-toggle button:not([data-submenu-reveal = 'expand'] button)  {
  min-block-size: calc(var(--top-offset) - 1px);
  inset-block-start: 0;
}

html:not(.dwc-mobile) :is(.brx-header-left, .brx-header-right):not([data-builder-window]) #brx-header .dwc-nest-menu .brxe-dropdown.open[data-submenu-reveal = 'slide'] > .brx-submenu-toggle button  {
  min-block-size: calc(var(--top-offset) - 1px);
  inset-block-start: 0;
}

html:not(.dwc-mobile) :is(.brx-header-left, .brx-header-right):not([data-builder-window]) #brx-header .dwc-nest-menu .brxe-dropdown .brx-submenu-toggle button {
  min-block-size: 0;    
}

/* sidebar css ends*/



/*sidebar in builder*/
/*=== sidebar css ===*/
:is(.brx-header-left, .brx-header-right)[data-builder-window] #brx-header {
  flex-direction: column;
  box-shadow: 0px 0px 2px rgba(0, 0, 0, 0.7);
  --top-offset: 40px;
}

:is(.brx-header-left, .brx-header-right)[data-builder-window] #brx-header .dwc-nest-menu.brxe-nav-nested .brx-nav-nested-items {
  max-block-size: 100dvb;
  padding-block-end: 12rem;
  overscroll-behavior: contain;
}

:is(.brx-header-left, .brx-header-right)[data-builder-window] #brx-header .dwc-nav-wrapper {
  position: relative;
  overflow: hidden;
  block-size: 100%;
  transform: translateX(0%);
  visibility: visible;
}

body:is(.brx-header-left, .brx-header-right)[data-builder-window] .dwc-nest-menu .brxe-toggle {
  display: none !important;
}

:is(.brx-header-left, .brx-header-right)[data-builder-window] #brx-header .dwc-nest-menu {
  display: flex;
  flex-direction: column;
}

:is(.brx-header-left, .brx-header-right)[data-builder-window] #brx-header .dwc-nest-header > div {
  display: flex;
  grid-template-columns: 1fr;
  block-size: 100%;
  flex-direction: column;
  justify-content: flex-start;
}

:is(.brx-header-left, .brx-header-right)[data-builder-window] #brx-header .dwc-menu-wrap {
  inline-size: 100%;
  display: grid;
  grid-template-columns: 1fr;
  block-size: 100%;
}

:is(.brx-header-left, .brx-header-right)[data-builder-window] #brx-header .dwc-nest-header {
  inline-size: 100%;
  padding-inline: 0;
}

:is(.brx-header-left, .brx-header-right)[data-builder-window] #brx-header .dwc-nest-menu-top {
  min-block-size: var(--top-offset);
}

:is(.brx-header-left, .brx-header-right)[data-builder-window] #brx-header .dwc-nest-menu .brx-dropdown-content {
  inset-block-start: calc(var(--top-offset) - 1px) !important;
}

:is(.brx-header-left, .brx-header-right)[data-builder-window] #brx-header .dwc-nest-menu.brxe-nav-nested.brx-open .brxe-dropdown > .brx-dropdown-content {
  overscroll-behavior: contain;  
}

:is(.brx-header-left, .brx-header-right)[data-builder-window] #brx-header .dwc-nest-menu .brxe-dropdown.open > .brx-submenu-toggle button {
  min-block-size: calc(var(--top-offset) - 1px);
  inset-block-start: 0;
}

:is(.brx-header-left, .brx-header-right)[data-builder-window] #brx-header .dwc-nest-menu .brxe-dropdown .brx-submenu-toggle button {
  min-block-size: 0;    
}

:is(.brx-header-left, .brx-header-right)[data-builder-window] .dwc-nest-menu {
  margin: 0 !important;
}

:is(.brx-header-left, .brx-header-right)[data-builder-window] .brx-nav-nested-items {  
  flex-direction: column !important;  
}
   
:is(.brx-header-left, .brx-header-right)[data-builder-window] .dwc-nest-toggle--open.brxe-toggle {
  display: flex !important;
}
 
:is(.brx-header-left, .brx-header-right)[data-builder-window] .dwc-nest-menu .brx-nav-nested-items {
  position: relative !Important;
  background: var(--mobile-menu-bg) !important;
  align-items: stretch;
  flex: 1;
}

:where(.brx-header-left, .brx-header-right)[data-builder-mode]:not(:has(.dwc-sidebar)) .dwc-nest-menu-top::before {
    content: 'this space is the back text bar';
    padding: 1rem;
    background-color: gray;
    color: white;
    width: 100%;
    text-transform: uppercase;
    font-size: 12px;
    font-weight: bold;
    letter-spacing: 1px;
}
 
/* MENU CTA (LAST BUTTON) */
:is(.brx-header-left, .brx-header-right)[data-builder-window] [data-last-item-is-button="true"].dwc-nest-menu .brx-nav-nested-items > .menu-item:last-of-type {
  padding-inline: var(--menu-item-inline-padding) !important;
  padding-block: var(--menu-item-block-padding) !important;
}
 
:is(.brx-header-left, .brx-header-right)[data-builder-window] .dwc-nest-menu-top {
  min-block-size: 80px !important;
}
 
:is(.brx-header-left, .brx-header-right)[data-builder-window] .dwc-nest-nav-items {
  overflow-y: scroll;
}

:is(.brx-header-left, .brx-header-right)[data-builder-mode] .brx-dropdown-content {
  min-inline-size: var(--mobile-menu-width);
  position: static;
}

:is(.brx-header-left, .brx-header-right)[data-builder-window] #brx-header .dwc-nest-menu.brxe-nav-nested .brx-nav-nested-items {
  flex-wrap: nowrap;
}
:is(.brx-header-left, .brx-header-right)[data-builder-window] #brx-header .dwc-nest-menu .brx-dropdown-content {   
  visibility: visible !important;
  opacity: 1;
}

/*OVERLAY SIDEBAR*/


html:not(.dwc-mobile):has([data-overlay-sidebar=true])  {
 --mobile-menu-bg: rgb(255 255 255 / 0%);
  --menu-item-border: solid 1px rgb(255 255 255 / 50%);
 
}

html:not(.dwc-mobile):has([data-overlay-sidebar=true]) :is(.brx-header-left, .brx-header-right):not([data-builder-modee]) :is(main, footer){
  margin: 0 !important
}

html:not(.dwc-mobile):has([data-overlay-sidebar=true]) :is(.brx-header-left, .brx-header-right):not([data-builder-modee]) :is(main, footer) :where(section):not(section>section) {
  padding-inline-start: calc(var(--mobile-menu-width) + clamp(1.5rem, calc(0.625vw + 1.375rem), 1.875rem));
  max-inline-size: 100%
}

html:not(.dwc-mobile):has([data-overlay-sidebar=true]) :is(.brx-header-left, .brx-header-right):not([data-builder-modee]) #brx-header {
  border-radius: var(--overlay-sidebar-radius);
  overflow: hidden;
  background: var(--overlay-sidebar-bg);
  box-shadow: var(--overlay-sidebar-shadow) !important;
  inset: var(--overlay-sidebar-inset);
}

html:not(.dwc-mobile):has([data-overlay-sidebar=true]) :is(.brx-header-left, .brx-header-right):not([data-builder-modee]) .dwc-nest-header{
  backdrop-filter: blur(13px);
  background: transparent !important;
}

html:not(.dwc-mobile):has([data-overlay-sidebar=true]):not([data-builder-modee])  .brx-dropdown-content {
   background-color: rgb(255 255 255 / 100%);
}

/*NO BRX-OPEN STYLES*/
html:not(.dwc-mobile) :is(.brx-header-left, .brx-header-right):not([data-builder-window]) #brx-header .dwc-nest-menu.brxe-nav-nested .brx-nav-nested-items {
  display: flex;
  flex-wrap: nowrap;
  flex-direction: column !important;
}


  html:not(.dwc-mobile) :is(.brx-header-left, .brx-header-right):not([data-builder-window]) .dwc-nest-menu.brxe-nav-nested .brxe-dropdown .brx-dropdown-content {
      visibility: visible;
      min-inline-size: var(--mobile-menu-width) !important;
  }


  html:not(.dwc-mobile) :is(.brx-header-left, .brx-header-right):not([data-builder-window]) .dwc-nest-menu[data-submenu-reveal="expand"] .brxe-dropdown.open>.brx-dropdown-content {
   position: static;
}



class SidebarNavigation {
  constructor(options = {}) {
    // Basic configuration properties
    this.config = {
      minWidth: options.minWidth || MegaMenuCONFIG.minWidth, // Using external minWidth variable
      menuSelector: options.menuSelector || '.dwc-nest-menu',
      openClass: options.openClass || 'brx-open',
      activeClasses: options.activeClasses || ['open', 'active'],
      leftHeaderClass: options.leftHeaderClass || 'brx-header-left',
      rightHeaderClass: options.rightHeaderClass || 'brx-header-right',
      debounceDelay: options.debounceDelay || 100,
      menuItemClickDelay: options.menuItemClickDelay || 300
    };
    
    // Set dependent selectors
    const menuSelector = this.config.menuSelector;
    this.config.submenuToggleSelector = options.submenuToggleSelector || `${menuSelector} .brx-submenu-toggle`;
    this.config.dropdownSelector = options.dropdownSelector || `${menuSelector} .brxe-dropdown`;
    this.config.dropdownContentSelector = options.dropdownContentSelector || `${menuSelector} .brx-dropdown-content`;
    
    // State
    this.previousHeaderClass = null;
    this.dropdownClickHandlers = new Map();
    this.menuHoverHandlers = null;
    this.menuItemClickTimeout = null;
    this.keyboardNavHandler = null;
    this.cachedFocusableElements = null;
    this.cachedElements = {
      menuElement: null,
      navElement: null,
      dropdowns: null,
      dropdownToggles: null,
      menuItems: null
    };
    
    // Bind methods to this instance
    this.handleResize = this.debounce(this.handleMenu.bind(this), this.config.debounceDelay);
    this.handleOutsideClick = this.handleOutsideClick.bind(this);
  }
  
  // Initialize everything - called once
  init() {
    // Wait for DOM to be fully loaded before attaching events
    if (document.readyState === 'loading') {
      document.addEventListener('DOMContentLoaded', () => {
        this.initAfterDOMLoaded();
      }, { once: true });
    } else {
      this.initAfterDOMLoaded();
    }
    
    return this;
  }
  
  // Separate initialization method to run after DOM is loaded
  initAfterDOMLoaded() {
    // Cache DOM elements once
    this.cacheElements();
    
    // Setup resize event with passive flag
    window.addEventListener('resize', this.handleResize, { passive: true });
    
    // Setup mutation observer for critical class changes only
    this.setupMutationObserver();
    
    // Initial setup based on current screen size
    this.handleMenu();
    
    // Cache focusable elements once if header class is present
    if (this.hasHeaderClass()) {
      this.cacheFocusableElements();
      this.setupMenuFocusNavigation();
    }
  }
  
  // Cache all required DOM elements upfront
  cacheElements() {
    this.cachedElements.menuElement = document.querySelector(this.config.menuSelector);
    
    if (this.cachedElements.menuElement) {
      this.cachedElements.navElement = this.cachedElements.menuElement.querySelector('.dwc-nest-nav-items');
      this.cachedElements.dropdowns = Array.from(document.querySelectorAll(this.config.dropdownSelector));
      this.cachedElements.dropdownToggles = Array.from(document.querySelectorAll(this.config.submenuToggleSelector));
      this.cachedElements.menuItems = Array.from(document.querySelectorAll(`${this.config.menuSelector} .menu-item`));
    }
  }
  
  // Set up a focused mutation observer only for dropdown state changes
  setupMutationObserver() {
    if (!this.cachedElements.dropdowns || this.cachedElements.dropdowns.length === 0) return;
    
    const callback = (mutations) => {
      for (let mutation of mutations) {
        if (mutation.type === 'attributes' && mutation.attributeName === 'class') {
          const target = mutation.target;
          const prevClassList = mutation.oldValue ? mutation.oldValue.split(' ') : [];
          const hadBothBefore = prevClassList.includes('open') && prevClassList.includes('active');
          const hasBothNow = target.classList.contains('open') && target.classList.contains('active');
    
          if (hadBothBefore !== hasBothNow) {
            this.updateDropdownAccessibility();
            break; // Only need to update once per batch
          }
        }
      }
    };
    
    // Create observer with optimized options
    this.classObserver = new MutationObserver(callback);
    
    // Observe only the dropdown elements
    this.cachedElements.dropdowns.forEach(dropdown => {
      this.classObserver.observe(dropdown, { 
        attributes: true, 
        attributeFilter: ['class'], 
        attributeOldValue: true 
      });
    });
  }
  
  // Cache focusable elements for keyboard navigation
  cacheFocusableElements() {
    if (!this.cachedElements.navElement) return;
    
    // Get direct children of nav
    const directChildren = Array.from(this.cachedElements.navElement.children);
    
    // Find the first focusable element within each direct child
    this.cachedFocusableElements = directChildren.map(child => {
      // Check if the child itself is focusable
      if (child.matches('a, button, input, select, textarea, [tabindex]:not([tabindex="-1"])')) {
        return child;
      }
      // Otherwise, find the first focusable element within this child
      return child.querySelector('a, button, input, select, textarea, [tabindex]:not([tabindex="-1"])');
    }).filter(Boolean); // Remove null/undefined values
  }
  
  // Clean up all event listeners and observers
  destroy() {
    // Clean up the mutation observer
    if (this.classObserver) {
      this.classObserver.disconnect();
      this.classObserver = null;
    }
    
    // Clean up resize listener
    window.removeEventListener('resize', this.handleResize);
    
    // Clean up click handlers
    if (this.dropdownClickHandlers.size > 0) {
      this.dropdownClickHandlers.forEach((handler, toggle) => {
        toggle.removeEventListener('click', handler);
      });
      this.dropdownClickHandlers.clear();
    }
    
    // Clean up hover handlers
    this.cleanupMenuHover();
    
    // Clean up menu item click handlers
    this.cleanupMenuItemClicks();
    
    // Clean up outside click handler
    document.removeEventListener('click', this.handleOutsideClick);
    
    // Clean up keyboard navigation
    if (this.keyboardNavHandler) {
      document.removeEventListener('keydown', this.keyboardNavHandler);
      this.keyboardNavHandler = null;
    }
    
    // Clear any pending timeouts
    if (this.menuItemClickTimeout) {
      clearTimeout(this.menuItemClickTimeout);
      this.menuItemClickTimeout = null;
    }
  }
  
  // Utility methods
  hasHeaderClass() {
    return document.body.classList.contains(this.config.leftHeaderClass) || 
           document.body.classList.contains(this.config.rightHeaderClass);
  }
  
  debounce(func, delay) {
    let timer;
    return (...args) => {
      clearTimeout(timer);
      timer = setTimeout(() => func(...args), delay);
    };
  }

  // Check if an element has all the required active classes
  hasAllActiveClasses(element) {
    return this.config.activeClasses.every(className => element.classList.contains(className));
  }
  
  // Toggle all active classes on an element
  toggleActiveClasses(element) {
    this.config.activeClasses.forEach(className => {
      element.classList.toggle(className);
    });
  }
  
  // Core functionality methods
  handleMenu() {
    if (!this.cachedElements.menuElement) return;
    if (!this.hasHeaderClass() && !this.previousHeaderClass) return;

    const screenWidth = window.innerWidth;
    const isLargeScreen = screenWidth >= this.config.minWidth;
    const menuElement = this.cachedElements.menuElement;

    if (!isLargeScreen) {
      // Save which class was present before removal
      if (this.hasHeaderClass()) {
        this.previousHeaderClass = document.body.classList.contains(this.config.leftHeaderClass) 
          ? this.config.leftHeaderClass 
          : this.config.rightHeaderClass;
        
        // Remove header classes
        document.body.classList.remove(this.config.leftHeaderClass, this.config.rightHeaderClass);
        menuElement.classList.remove(this.config.openClass);
        
        // Reset accessibility attributes
        this.resetAccessibilityAttributes();
      }
      
      // Clean up event handlers for mobile view
      this.cleanupMenuHover();
      this.cleanupMenuItemClicks();
      this.cleanupDropdownHandlers();
      document.removeEventListener('click', this.handleOutsideClick);
      
      return;
    }

    // Large screen behavior
    if (!this.hasHeaderClass() && this.previousHeaderClass) {
      document.body.classList.add(this.previousHeaderClass);
    }

    if (this.hasHeaderClass()) {
      if (!menuElement.classList.contains(this.config.openClass)) {
        menuElement.classList.add(this.config.openClass);
      }
      
      // Setup elements for large screen view
      this.setupMenuHover();
      this.setupMenuItemClicks();
      this.setupDropdownHandlers();
      this.setupMenuFocusNavigation();
      this.updateDropdownAccessibility();
      
      // Ensure outside click handler is set up
      document.removeEventListener('click', this.handleOutsideClick);
      document.addEventListener('click', this.handleOutsideClick, { passive: false });
    }
  }
  
  // Reset accessibility attributes when switching to mobile
  resetAccessibilityAttributes() {
    if (!this.cachedElements.dropdowns) return;
    
    // Remove all inert attributes from dropdown contents
    this.cachedElements.dropdowns.forEach(dropdown => {
      const content = dropdown.querySelector(this.config.dropdownContentSelector);
      if (content) {
        content.removeAttribute('inert');
      }
      
      const button = dropdown.querySelector('button');
      if (button) {
        button.setAttribute('aria-expanded', 'false');
      }
    });
  }
  
  setupMenuFocusNavigation() {
    // Only run if hasHeaderClass() is true and we have focusable elements
    if (!this.hasHeaderClass() || !this.cachedFocusableElements || this.cachedFocusableElements.length === 0) {
      return;
    }
    
    // Clean up previous handler if it exists
    if (this.keyboardNavHandler) {
      document.removeEventListener('keydown', this.keyboardNavHandler, true);
      this.keyboardNavHandler = null;
    }
    
    const navMenu = this.cachedElements.menuElement;
    const focusableElements = this.cachedFocusableElements;
    const firstFocusableElement = focusableElements[0];
    const lastFocusableElement = focusableElements[focusableElements.length - 1];
    
    // Find adjacent focusable elements outside the menu (only once during setup)
    const headerElement = navMenu.closest('header') || document.querySelector('header');
    
    // Prepare variables to hold adjacent elements
    let prevFocusableElement = null;
    let nextFocusableElement = null;
    let firstElementAfterHeader = null;
    
    if (headerElement) {
      // Get all focusable elements within the header - do this once and cache the result
      const headerFocusables = Array.from(
        headerElement.querySelectorAll('a:not([tabindex="-1"]), button:not([tabindex="-1"]), input:not([tabindex="-1"]), select:not([tabindex="-1"]), textarea:not([tabindex="-1"]), [tabindex]:not([tabindex="-1"])')
      ).filter(el => window.getComputedStyle(el).display !== 'none');
      
      // Find the index of our first and last menu elements in one pass
      const menuStartIndex = headerFocusables.indexOf(firstFocusableElement);
      const menuEndIndex = headerFocusables.indexOf(lastFocusableElement);
      
      // Cache the adjacent elements
      if (menuStartIndex > 0) {
        prevFocusableElement = headerFocusables[menuStartIndex - 1];
      }
      
      if (menuEndIndex !== -1 && menuEndIndex < headerFocusables.length - 1) {
        nextFocusableElement = headerFocusables[menuEndIndex + 1];
      }
      
      // Pre-calculate the first element after header - but only if needed
      if (!nextFocusableElement) {
        // Use a more efficient selector that targets immediate children of body that aren't the header
        const selector = 'body > *:not(header)';
        const nonHeaderElements = document.querySelectorAll(selector);
        
        // Only process if we have elements
        if (nonHeaderElements.length > 0) {
          // Create a function to find the first focusable element (used later if needed)
          this.findFirstFocusableAfterHeader = () => {
            for (const element of nonHeaderElements) {
              const focusable = element.querySelector('a:not([tabindex="-1"]), button:not([tabindex="-1"]), input:not([tabindex="-1"]), select:not([tabindex="-1"]), textarea:not([tabindex="-1"]), [tabindex]:not([tabindex="-1"])');
              if (focusable && window.getComputedStyle(focusable).display !== 'none') {
                return focusable;
              }
            }
            return null;
          };
        }
      }
    }
    
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SURFACE-WATER COLLECTION

Catch Basin Installation Services Across Metro Vancouver

Catch basins installed to capture surface runoff and move water safely away from foundations and entry points. A catch basin collects runoff at a designed low point and sends it to an approved outlet. VALROC checks the surrounding grade, basin location and surface use before defining an installation or replacement scope.

Basin rim, outlet and adjacent pavement are assessed together.

Catch basin being installed on subbase ground while contractor holds level and excavator helps lift in the catch basin
LOW POINT

Capture surface runoff

Place the inlet where the approved grade can direct water to it.

OUTLET

Plan the discharge

Confirm where collected water can legally and practically flow.

SURFACE

Match the finished elevation

Set the lid and surrounding grade for the intended vehicle or pedestrian use.

HOW THE WORK PROCEEDS

How catch-basin installation is installed

Excavation and tie-ins handled with in-house equipment and trained crew The connected Process records cover planning, excavation and base preparation, basin placement and outlet integration, then finishing around the inlet. The exact basin and tie-in depend on the property.

  1. Compact basin placement with infill

    Step 1

    Catch Basin Planning

    This planning phase ensures your catch basin is engineered with precision, including blueprints, flow calculations, and permit coordination with city officials and engineers.

    • Inlet planning
    • Outlet review
    • Basin location
  2. Catch basin new home construction

    Step 2

    Catch Basin Site Prep

    Site preparation ensures proper grading, excavation, and subbase compaction, setting the stage for a durable and fully functional catch basin installation.

    • Basin excavation
    • Base preparation
    • Utility review
  3. Catch basin Y-connection setup

    Step 3

    Catch Basin Installation

    Placement of the catch basin system includes precise positioning, connection to existing drainage lines, and concrete or asphalt forming to ensure long-term structural integrity and flow performance.

    • Basin placement
    • Outlet connection
    • Inlet grade
  4. Contractor sealing catch basin to mainline

    Step 4

    Catch Basin Finishing

    Final surface restoration and finishing for catch basin installations, including concrete and asphalt rebuilds, tailored to residential, strata, and commercial projects across Metro Vancouver.

    • Rim elevation
    • Surface transition
    • Site restoration

Drainage Services Overview

A 30-second overview of VALROC’s professional drainage services, showcasing residential, strata, commercial, and light-industrial drainage projects throughout Metro Vancouver and the Fraser Valley.

can you 

BUILT AROUND THE WATER PATH

Where catch-basin installation fits the property

Catch basins are a key part of any well-functioning drainage system. At VALROC Development Ltd., we specialize in the installation of high-performance catch basins designed to move surface water safely and efficiently away from your property.

How Catch Basins Work in Residential and Commercial Settings

Built for Long-Term Protection

Catch basins can intercept surface water on driveways, parking areas and other paved or landscaped low points. Performance depends on grades, inlet capacity, maintenance access and a suitable discharge route.

SURFACE GRADE

Find the collection point

Review low areas and how adjoining surfaces feed the inlet.

BASIN

Size for the site

Choose the basin and lid for the expected runoff and surface use.

OUTLET

Connect to a discharge

Confirm the proposed pipe route and approved receiving point.

ACCESS

Keep maintenance practical

Consider lid access and debris removal when locating the basin.

ONLY WHAT THE SITE REQUIRES

Choices for catch-basin installation

Catch basin size, grate style and finished elevation should match the expected water flow and surrounding surface. Additional drainage connections or wider regrading are coordinated where the property requires them.

Catch basin installation support

Included in our service:

  • • Surface water flow and low point review

  • • Catch basin size and location planning

  • • Excavation and base preparation

  • • Pipe connections set to required grades

  • • Basin placement and elevation adjustment

  • • Aggregate backfill and compaction

  • • Paving or concrete interface coordination

  • • Material delivery and equipment scheduling

  • • Inspection coordination when required

  • • Flow check, cleanup and final walkthrough

Basin size, grate or lid type, rim adjustment and additional drainage connections are site-specific decisions. A new storm line, trench drain or wider regrading is a separate scope unless specified.

Coordinate the full water path

DRAINAGE CONNECTIONS

Coordinate catch-basin installation with adjacent work

Can be tied into new or existing drainage infrastructure A catch basin may connect with driveway paving, parking-lot grades, trench drains or existing stormwater infrastructure. Each interface needs a defined elevation and scope.

New storm lines, widespread regrading and adjoining driveway or parking-area replacement are not automatic catch-basin inclusions.

  • Hot asphalt patching in Vancouver parking lot - professional asphalt repair services.

    Catch basins for asphalt parking lots

    • Parking lot catch basin
    • Stormwater collection
    • Asphalt drainage

    Parking lots create broad runoff areas that need dependable collection points. Catch basins positioned at low elevations can help keep parking stalls, drive aisles and pedestrian routes more usable during wet weather.

    Explore asphalt parking lot installation
  • Valroc crew performing full asphalt roadway demolition in a strata complex, removing failed pavement and preparing for new subbase and catch basin elevation adjustments.

    Catch basin drainage for private roadways

    • Roadway catch basin
    • Private road drainage
    • Surface runoff

    Private roads and strata lanes need drainage that follows the roadway grade and expected flow path. Catch basins can collect runoff before it concentrates at entrances, corners or lower sections.

    Explore asphalt roadway installation
  • Compacting asphalt driveway

    Driveway catch basins for low areas

    • Driveway catch basin
    • Low point drainage
    • Asphalt grades

    A catch basin can manage water where an asphalt driveway reaches a low point or receives runoff from surrounding grades. Coordinating the rim elevation with paving helps the surface drain without creating a vehicle obstacle.

    Explore asphalt driveway installation
  • Aaron team member installing a trench drain in front of a garage diverting water that has been damaging the concrete and undermining the foundation

    Catch basins connected to trench drains

    • Catch basin connection
    • Trench drain system
    • Drainage maintenance

    A trench drain may feed a catch basin that provides sediment collection, maintenance access and an underground pipe connection. Planning both components creates a more complete surface water system.

    Explore trench drain installation
  • Excavating a rock pit beside a detached garage for rainwater management

    Aggregate rock pits for collected drainage water

    • Catch basin outlet
    • Rock pit drainage
    • Water infiltration

    Where soil, space and local requirements allow, an aggregate rock pit may receive water collected by a catch basin. The storage volume and infiltration conditions need to match the site.

    Explore aggregate rock pit drainage

DOCUMENTED EXPERIENCE

Catch basin installation experience across Metro Vancouver

VALROC installs catch basins as part of coordinated drainage plans for residential, strata and business properties. Our experience helps position each basin around surface grades, paved areas, expected water flow and the route to a suitable outlet. We regularly work on drainage around homes, strata properties and active business sites in Langley, Surrey, Burnaby, Richmond and White Rock, coordinating with property managers, engineers and municipal requirements when needed.

DEFINE THE DRAINAGE SCOPE

Request an onsite catch-basin installation estimate

An onsite review helps VALROC understand the water problem, construction access, proposed outlet and restoration before a catch-basin installation proposal is prepared.

  • Describe the water issue

    Share where and when water collects, plus any available site photos or plans.

  • Walk the property

    Review where water collects, the existing grades, potential outlet, underground utilities, vehicle loading and the surface that must be opened and restored.

  • Confirm the proposal

    Review the defined installation, connections, access and restoration before proceeding.

    • What affects a catch-basin installation estimate?

    Basin dimensions, lid loading, excavation depth, utility conflicts, outlet distance and pavement restoration affect the installation scope. A site visit is needed for a property-specific price.

    What affects a catch-basin installation estimate?

    Basin dimensions, lid loading, excavation depth, utility conflicts, outlet distance and pavement restoration affect the installation scope. A site visit is needed for a property-specific price.

    Request Your Free On-site Estimate

    INVESTIGATE BEFORE DESIGN

    Assess the site before catch-basin installation

    VALROC’s Approach to Drainage Installation Precision grading and trenching for optimal water flow Review where water collects, the existing grades, potential outlet, underground utilities, vehicle loading and the surface that must be opened and restored.

  • 01

    Trace the water

    Review where water collects, the existing grades, potential outlet, underground utilities, vehicle loading and the surface that must be opened and restored.

  • 02

    Check access and utilities

    Review the work area, underground services and surfaces that may need opening.

  • 03

    Confirm the outlet

    Identify an acceptable discharge or infiltration approach before finalizing the scope.

  • 04

    Write the scope

    Define installation, connections and restoration separately in the proposal.

    • What the surface cannot show

    Installing a basin without a suitable discharge route can leave the underlying water problem unresolved. Confirm the outlet before selecting a basin position.

    What the surface cannot show

    Installing a basin without a suitable discharge route can leave the underlying water problem unresolved. Confirm the outlet before selecting a basin position.

    ANSWERS NEED SITE CONTEXT

    Questions about catch-basin installation

    The linked questions address basin purpose, replacement, equipment, larger systems and timing. Their answers should be qualified by grade, outlet and access conditions.

    What is a catch basin, and why is it important?

    A catch basin is a below-grade drainage structure designed to collect surface water and direct it into an underground storm system.

    • It captures water from roads, driveways, parking lots, and paved areas.
    • The basin helps prevent pooling, erosion, and water damage near structures.
    • Grates and sumps allow debris to settle while water continues downstream.

    VALROC installs and replaces catch basins as part of properly graded, long-term drainage solutions.

    What is a catch basin, and why is it important?

    A catch basin is a below-grade drainage structure designed to collect surface water and direct it into an underground storm system.

    • It captures water from roads, driveways, parking lots, and paved areas.
    • The basin helps prevent pooling, erosion, and water damage near structures.
    • Grates and sumps allow debris to settle while water continues downstream.

    VALROC installs and replaces catch basins as part of properly graded, long-term drainage solutions.

    How do I know if my catch basin needs to be replaced or adjusted?

    A catch basin may need attention if it no longer aligns with surrounding grades or drains efficiently.

    • Water consistently pools around the grate instead of draining.
    • The concrete collar is cracked, sunken, or deteriorating.
    • The basin sits too high or too low compared to road or driveway surfaces.
    • Frequent backups or surface flooding occur during rainfall.

    VALROC evaluates the existing basin and determines whether adjustment or full replacement is required.

    How do I know if my catch basin needs to be replaced or adjusted?

    A catch basin may need attention if it no longer aligns with surrounding grades or drains efficiently.

    • Water consistently pools around the grate instead of draining.
    • The concrete collar is cracked, sunken, or deteriorating.
    • The basin sits too high or too low compared to road or driveway surfaces.
    • Frequent backups or surface flooding occur during rainfall.

    VALROC evaluates the existing basin and determines whether adjustment or full replacement is required.

    What equipment does VALROC use for catch basin installation and removal?

    Catch basin work requires heavy equipment to safely remove existing structures and reset grades accurately.

    • Excavators are used for deep digging and basin removal.
    • Dump trucks haul excavated material and deliver new components.
    • Compactors and grading equipment restore stable base conditions.
    • Concrete cutting tools allow precise removal without damaging surrounding areas.

    VALROC completes this work in-house to maintain control over sequencing and quality.

    What equipment does VALROC use for catch basin installation and removal?

    Catch basin work requires heavy equipment to safely remove existing structures and reset grades accurately.

    • Excavators are used for deep digging and basin removal.
    • Dump trucks haul excavated material and deliver new components.
    • Compactors and grading equipment restore stable base conditions.
    • Concrete cutting tools allow precise removal without damaging surrounding areas.

    VALROC completes this work in-house to maintain control over sequencing and quality.

    Can you install an entirely new drainage system along with a catch basin?

    A catch basin can be installed as part of a new or upgraded drainage system.

    • New stormwater piping can be tied into the basin to manage runoff.
    • Perimeter or foundation drainage can be integrated for added protection.
    • Roadway and parking lot systems can be rebuilt to meet municipal requirements.

    VALROC designs drainage systems based on site conditions, flow requirements, and long-term performance.

    Can you install an entirely new drainage system along with a catch basin?

    A catch basin can be installed as part of a new or upgraded drainage system.

    • New stormwater piping can be tied into the basin to manage runoff.
    • Perimeter or foundation drainage can be integrated for added protection.
    • Roadway and parking lot systems can be rebuilt to meet municipal requirements.

    VALROC designs drainage systems based on site conditions, flow requirements, and long-term performance.

    How long does it take to install or replace a catch basin?

    The timeline depends on whether the basin is being adjusted, replaced, or installed as part of a larger drainage system.

    • Simple height adjustments are often completed in one day.
    • Full removal and replacement typically takes two to three days.
    • Projects involving new piping or multiple basins may take several days.

    VALROC schedules excavation and restoration work to minimize disruption to surrounding surfaces.

    How long does it take to install or replace a catch basin?

    The timeline depends on whether the basin is being adjusted, replaced, or installed as part of a larger drainage system.

    • Simple height adjustments are often completed in one day.
    • Full removal and replacement typically takes two to three days.
    • Projects involving new piping or multiple basins may take several days.

    VALROC schedules excavation and restoration work to minimize disruption to surrounding surfaces.

    METRO VANCOUVER DRAINAGE

    Site-specific catch-basin installation across Metro Vancouver

    From Langley, VALROC installs catch basins for driveways, parking areas, strata properties and business sites where surface water collects at a defined low point. Basin elevation, pipe grades, aggregate backfill and connections to concrete or asphalt are coordinated with equipment access and the surrounding drainage layout.

    Catch basin work in Surrey, Burnaby and Delta may respond to parking circulation, older drainage infrastructure or changing surface grades. Properties in White Rock can also require careful coordination on sloped sites. Each installation is planned around the intended outlet and municipal context.