/*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 DRAINAGE AT THE EDGE

Trench Drain Installation Services in Metro Vancouver

Ideal for sloped driveways, patios, entryways, and landscape transitions where pooling or runoff is a concern. A trench drain is a surface channel with a grate that intercepts runoff across a driveway, entry or other paved area. VALROC checks surface grades, grate loading and the outlet before defining the channel installation.

A surface trench drain is not the same as a subsurface French drain.

Aaron team member installing a trench drain in front of a garage diverting water that has been damaging the concrete and undermining the foundation
INTERCEPTION

Catch runoff at the surface

Place the channel across a defined water path.

LOAD CONTEXT

Select a suitable grate

Match the channel and grate to intended pedestrian or vehicle use.

OUTLET

Plan discharge

Confirm the pipe and receiving point before saw-cutting the surface.

HOW THE WORK PROCEEDS

How trench-drain installation is installed

The connected records include broad trenching, surface removal, excavation, channel placement and restoration. Only trench-drain-relevant steps belong in this page; French-drain pipe-and-gravel methods are a separate system.

  1. trenching-with-utility-markings

    Step 1

    Trenching Services

    Flexible trenching solutions for residential, commercial, and industrial needs, from utility lines to interior concrete removal, tailored for tight access, emergency jobs, or full-scale site service tie-ins.

    • Trenching services
    • Access review
    • Utility location
  2. Worker fitting trench drain between asphalt and slab

    Step 1

    Trench Drain Demolition

    Demolition and removal of concrete, asphalt, or subbase materials to prepare for French or trench drain installations in residential, strata, or commercial applications.

    • Surface sawcut
    • Channel opening
    • Material removal
  3. Trench drain with grate installed in asphalt driveway during construction

    Step 2

    Drain Trench Excavation

    Site preparation for trench and French drain systems, including trench excavation, slope grading, and compliant depth formation for optimal drainage performance.

    • Channel trench
    • Outlet grade
    • Excavation depth
  4. Worker using level to align trench drain before setting

    Step 3

    Drain Channel Installation

    Base preparation and precise channel placement for trench and French drain systems, tailored to surface type and site needs for long-term performance.

    • Trench channel
    • Grate selection
    • Drain outlet
  5. Finished trench drain between asphalt and concrete surface

    Step 4

    Drain Restoration

    Backfilling, grading, and concrete or asphalt surface restoration following trench or French drain installation, with a focus on protecting structures and long-term water management.

    • Paving restoration
    • Drain interface
    • Final grade

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.

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Tony’s Homeowner Testimonial

Homeowner testimonial from Brookswood, Langley featuring an asphalt driveway, drainage improvements, retaining wall, and complete property transformation.

can you 

BUILT AROUND THE WATER PATH

Where trench-drain installation fits the property

Why Homeowners and Businesses Choose Trench Drains

Trench drains are used where moving surface water needs to be intercepted along a driveway, garage threshold, patio or commercial pavement edge. Channel position, grate capacity, finished grade and outlet determine the actual design.

SURFACE

Intercept the runoff

Locate the channel across the path water already follows.

CHANNEL

Fit the opening

Select width and grate loading for the site use.

GRADE

Meet adjoining paving

Coordinate the inlet with the surrounding finish and slope.

OUTLET

Route the water

Confirm the receiving pipe or drainage system before installation.

ONLY WHAT THE SITE REQUIRES

Choices for trench-drain installation

Choose the channel material, grate profile and load rating around the expected water flow and surface use. Outlet connections and pavement restoration are coordinated with the trench drain layout.

Trench drain installation support

Included in our service:

  • • Surface water and drainage path review

  • • Trench drain location and length planning

  • • Excavation and stable base preparation

  • • Channel sections set to finished elevation

  • • Outlet and pipe connection coordination

  • • Concrete surround where specified

  • • Grate selection for the intended traffic

  • • Material ordering and delivery scheduling

  • • Flow testing before final handoff

  • • Surface restoration and site cleanup

Channel material, grate profile, load rating and pavement restoration vary with the property. A French drain, perimeter drain or new catch basin is separate work unless specifically contracted.

Coordinate the full water path

DRAINAGE CONNECTIONS

Coordinate trench-drain installation with adjacent work

Useful for sloped driveways or vehicle wash-down areas Can be added to patios, landscaping, and parking pads A trench drain can meet a driveway, garage entrance, patio or paved access area and may discharge toward an approved catch basin or other system. Adjacent paving and drainage connections need separate scope.

French drains, perimeter drainage, catch-basin construction and full pavement replacement are not automatic trench-drain inclusions.

  • Trench drains for concrete driveway runoff

    • Concrete driveway trench drain
    • Surface runoff
    • Garage protection

    A trench drain can intercept water moving across a concrete driveway before it reaches a garage, doorway or lower property area. Setting the drain elevation with the driveway pour creates a clean, functional transition.

    Explore concrete driveway installation
  • Compacting asphalt driveway

    Trench drains across asphalt driveways

    • Asphalt driveway drainage
    • Channel drain
    • Entrance runoff

    Channel drainage can be installed across an asphalt driveway where runoff needs to be collected along a wide entrance. Coordinating the drain and paving work helps maintain smooth vehicle access and positive water flow.

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

    Trench drainage for asphalt parking lots

    • Parking lot trench drain
    • Loading area drainage
    • Linear drainage

    Parking lots and loading areas may need linear drainage where water crosses entrances or large paved zones. Trench drains can support the grading plan and reduce ponding near buildings and pedestrian routes.

    Explore asphalt parking lot installation
  • Backyard newly installed garage slabs still with the wooden forms up and the Valroc service truck up on the hill

    Garage entrance trench drains beside concrete slabs

    • Garage trench drain
    • Slab threshold
    • Driveway runoff

    A trench drain at the garage threshold can collect driveway runoff and wash water before it reaches the concrete floor. Planning it with the garage slab helps align the grate, approach and discharge route.

    Explore concrete garage slabs
  • Catch basin being installed on subbase ground while contractor holds level and excavator helps lift in the catch basin

    Catch basin outlets for trench drain systems

    • Trench drain outlet
    • Catch basin connection
    • Drainage collection

    Trench drains often need a collection point or connected drainage route to move water away from the surface. A catch basin can support sediment collection, pipe connections and maintenance access.

    Explore catch basin installation

DOCUMENTED EXPERIENCE

Trench drain experience for paved and hardscape areas

VALROC installs trench drains where driveways, garages, patios and other hard surfaces need controlled water collection. Our Metro Vancouver experience helps coordinate drain placement with surface grades, traffic, surrounding construction and a suitable outlet. Our crews install drainage around garages, driveways, parkades and outdoor areas in Langley, Surrey, Burnaby, Richmond and White Rock, including sites where strata coordination or municipal connections must be considered.

DEFINE THE DRAINAGE SCOPE

Request an onsite trench-drain installation estimate

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

  • Describe the water issue

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

  • Walk the property

    Check the direction and volume of surface runoff, crossing traffic, available channel length, outlet, utilities and the surface that must be opened.

  • Confirm the proposal

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

    • What affects a trench-drain installation estimate?

    Channel length, saw-cut and excavation, grate loading, outlet distance, utility conflicts and surface restoration affect the scope. A site visit is needed for a property-specific price.

    What affects a trench-drain installation estimate?

    Channel length, saw-cut and excavation, grate loading, outlet distance, utility conflicts and surface restoration affect the scope. A site visit is needed for a property-specific price.

    Request Your Free On-site Estimate

    INVESTIGATE BEFORE DESIGN

    Assess the site before trench-drain installation

    Check the direction and volume of surface runoff, crossing traffic, available channel length, outlet, utilities and the surface that must be opened.

  • 01

    Trace the water

    Check the direction and volume of surface runoff, crossing traffic, available channel length, outlet, utilities and the surface that must be opened.

  • 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

    A surface grate cannot resolve every groundwater or foundation-moisture issue. Confirm whether the problem is surface runoff before selecting a trench drain.

    What the surface cannot show

    A surface grate cannot resolve every groundwater or foundation-moisture issue. Confirm whether the problem is surface runoff before selecting a trench drain.

    ANSWERS NEED SITE CONTEXT

    Questions about trench-drain installation

    The five currently linked FAQs discuss French drains, a different subsurface system. They must not be presented as trench-drain answers; dedicated trench-drain FAQs remain an editorial and WordPress relationship task.

    What is a French drain, and why is it important?

    A French drain is an underground system that redirects excess groundwater away from areas where water collects.

    • It captures water before it reaches foundations, slabs, or finished spaces.
    • It helps reduce soil saturation that can lead to erosion or settlement.
    • It improves drainage in yards, driveways, and low-lying areas.
    • It limits long-term moisture exposure around buildings.

    VALROC installs French drains as part of broader site drainage strategies rather than treating them as standalone fixes.

    What is a French drain, and why is it important?

    A French drain is an underground system that redirects excess groundwater away from areas where water collects.

    • It captures water before it reaches foundations, slabs, or finished spaces.
    • It helps reduce soil saturation that can lead to erosion or settlement.
    • It improves drainage in yards, driveways, and low-lying areas.
    • It limits long-term moisture exposure around buildings.

    VALROC installs French drains as part of broader site drainage strategies rather than treating them as standalone fixes.

    Why should I install a French drain instead of other drainage solutions?

    A French drain is often chosen when groundwater is the main issue rather than surface water alone.

    • It works below grade, keeping the solution out of sight.
    • It can handle continuous subsurface water movement.
    • It requires little maintenance when installed correctly.
    • It can be combined with other drainage systems if needed.

    VALROC compares French drains with options like trench drains or catch basins to select the right approach for each site.

    Why should I install a French drain instead of other drainage solutions?

    A French drain is often chosen when groundwater is the main issue rather than surface water alone.

    • It works below grade, keeping the solution out of sight.
    • It can handle continuous subsurface water movement.
    • It requires little maintenance when installed correctly.
    • It can be combined with other drainage systems if needed.

    VALROC compares French drains with options like trench drains or catch basins to select the right approach for each site.

    How does VALROC install a French drain system?

    A French drain must be installed with proper slope, materials, and discharge planning to function correctly.

    The process typically includes:

    1. Excavating a trench with controlled grading.
    2. Lining the trench to prevent soil migration.
    3. Installing a perforated pipe at the base.
    4. Surrounding the pipe with washed drainage gravel.
    5. Connecting the system to an appropriate outlet.

    VALROC completes excavation, installation, and restoration in sequence to ensure the system performs long term.

    How does VALROC install a French drain system?

    A French drain must be installed with proper slope, materials, and discharge planning to function correctly.

    The process typically includes:

    1. Excavating a trench with controlled grading.
    2. Lining the trench to prevent soil migration.
    3. Installing a perforated pipe at the base.
    4. Surrounding the pipe with washed drainage gravel.
    5. Connecting the system to an appropriate outlet.

    VALROC completes excavation, installation, and restoration in sequence to ensure the system performs long term.

    Where is the best place to install a French drain on my property?

    The best location depends on where water is collecting and how it moves across the property.

    • Along foundation walls where groundwater pressure builds up.
    • Beside driveways or walkways that trap runoff.
    • In low areas of yards where water pools after rainfall.
    • At the base of slopes to control runoff and erosion.
    • Behind retaining walls to relieve hydrostatic pressure.

    VALROC evaluates grading, soil conditions, and discharge points to determine placement that actually solves the problem.

    Where is the best place to install a French drain on my property?

    The best location depends on where water is collecting and how it moves across the property.

    • Along foundation walls where groundwater pressure builds up.
    • Beside driveways or walkways that trap runoff.
    • In low areas of yards where water pools after rainfall.
    • At the base of slopes to control runoff and erosion.
    • Behind retaining walls to relieve hydrostatic pressure.

    VALROC evaluates grading, soil conditions, and discharge points to determine placement that actually solves the problem.

    Can a French drain be installed in an existing landscape without major disruption?

    Yes, a French drain can often be installed with minimal impact to existing landscaping.

    • Trenching is kept as narrow as practical.
    • Soil, sod, or surface finishes are restored after installation.
    • Drainage components are buried and not visible once complete.
    • Layouts are adjusted to avoid unnecessary removal of plants or features.

    VALROC plans drainage work to respect finished landscapes while still addressing water movement properly.

    Can a French drain be installed in an existing landscape without major disruption?

    Yes, a French drain can often be installed with minimal impact to existing landscaping.

    • Trenching is kept as narrow as practical.
    • Soil, sod, or surface finishes are restored after installation.
    • Drainage components are buried and not visible once complete.
    • Layouts are adjusted to avoid unnecessary removal of plants or features.

    VALROC plans drainage work to respect finished landscapes while still addressing water movement properly.

    METRO VANCOUVER DRAINAGE

    Site-specific trench-drain installation across Metro Vancouver

    From our Langley construction yard, VALROC installs trench drains across garage entrances, driveways, patios, parking areas and other surfaces where water needs a defined collection line. Channel depth, grate type, concrete support and outlet connections are coordinated with the finished elevation and expected vehicle or pedestrian use.

    Projects in Surrey and White Rock may use trench drainage at sloped entrances or outdoor living areas, while Burnaby and Delta properties can require careful connections to existing pavement and drainage infrastructure. Each system is planned around actual water movement and the available outlet.