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 /* update variables when header is on dark background*/
.on-dark-bg {
   --header-bg: var(--current-header-bg);
   --chevron-clr: white;
   --menu-item-clr: white;
   --menu-item-hover-bg: #172235;
   --menu-item-hover-clr: #bc92e6;
   --menu-toggle-clr: var(--menu-item-clr);
   --dropdown-content-border: solid 1px rgb(220 220 220 / 20%);
   --mobile-menu-bg: var(--header-bg);
 }

 .on-light-bg {
   --menu-item-clr: black;
   /* update variables when header is on light background*/
 }


 /* update variable when on dark or light background */
 .on-dark-bg,
 .on-light-bg {
   --overlay-header-bg-active: var(--current-header-bg);
   --dropdown-content-bg: var(--current-header-bg);
 }

 .on-video-section {
   /* update variables when header is on video section*/
   --menu-item-clr: white;
   --chevron-clr: white;
   --menu-item-hover-bg: rgb(0 0 0 / 30%);
   --menu-item-hover-clr: #bc92e6;
   --dropdown-content-bg: rgb(0 0 0 / 70%);
   --overlay-header-bg: rgb(0 0 0 / 25%);
   --overlay-header-bg-active: var(--dropdown-content-bg);
   --dropdown-content-border: solid 1px rgb(220 220 220 / 20%);
   --current-header-bg: rgb(0 0 0 / 14%) !important;
   --header-bg: rgb(0 0 0 / 70%);
   --menu-toggle-clr: white;
   --mobile-menu-bg: rgb(0 0 0 / 95%);
   --menu-cta-border: var(--dropdown-content-border)
 }


 .on-hero-section {
   /* update variables when header is on hero section*/
 }

 /* header bg blure when on video section */
 html:not(.dwc-mobile) .dwc-nest-header.on-video-section {
   backdrop-filter: blur(var(--overlay-header-blur));
 }

 /* overlay header border when on video section or dark background*/
 .dwc-nest-header:is(.on-dark-bg, .on-video-section)[data-overlay-header="true"] {
   border: 1px solid rgba(255, 255, 255, 0.2);
 }

 /* header bottom border when on dark background or video section*/
 .dwc-nest-header:is(.on-dark-bg, .on-video-section) {
   border-bottom: 1px solid rgba(255, 255, 255, 0.2);
 }


 /* logo color when on dark background*/
 .on-dark-bg .dwc-nest-menu__logo path {
   fill: white;
 }

 /* logo color when on light background*/
 .on-dark-bg .dwc-nest-menu__logo path {
   /*define svg fill when logo is on light background */
 }

 /* logo color when on video background*/
 .on-video-section .dwc-nest-menu__logo path {
   fill: white;
 }

/*custom */

.on-dark-bg .mega-menu-magic__menu-icon-large{
   background-color: var(--current-header-bg);
    fill: #bc92e6;
    color: #bc92e6;
}

.on-video-section .mega-menu-magic__menu-icon-large{
   background-color: var(--current-header-bg);
    fill: #bc92e6;
    color: #bc92e6;
}

.on-video-section .mega-menu-magic__dropdown-title,
.on-dark-bg .mega-menu-magic__dropdown-title{
    color: rgb(210 210 210);   
}
// Constants
const BREAKPOINT_DESKTOP = 0;
const DEBOUNCE_DELAY = 50;

// Configuration object for all header-related selectors
const HEADER_CONFIG = {
  // Main header element
  headerElement: '.dwc-nest-header',
  // Wrapper element selectors (can be classes, IDs, or data attributes)
  wrapperSelectors: [
    // '.dwc-nest-header__container'
  ],
  // Elements to monitor for header styling (can include any CSS selector)
  // Default monitors sections, but you can add footer, divs, or any element
  monitoredElements: 'section, [data-header-zone]',
  // Store original header background color
  originalHeaderBgColor: null
};

// Unified section type configuration
// Add new data attributes here - they will be automatically mapped to header classes
const SECTION_TYPES = {
  'data-hero': 'on-hero-section',
  'data-video': 'on-video-section',
  'data-custom': 'on-custom-section',
  'data-sticky': 'on-media-section'
  // Add new: 'data-feature': 'on-feature-section'
};

// Configuration for excluded sections
const EXCLUSION_CONFIG = {
  // Data attribute that identifies sections to exclude from header styling
  sectionAttribute: 'data-exclude-header'
};

// Text color classes
const TEXT_CLASSES = {
  light: 'on-dark-bg',
  dark: 'on-light-bg'
};

// Generate classes to remove dynamically from SECTION_TYPES and text classes
const ALL_CLASSES_TO_REMOVE = [
  // Add all header classes from section types
  ...Object.values(SECTION_TYPES),
  // Add text color classes
  TEXT_CLASSES.light,
  TEXT_CLASSES.dark
];

// Performance optimization: Cache DOM elements and computed values
const CACHE = {
  headerElement: null,
  wrapperElement: null,
  sections: [],
  sectionsData: new Map(),
  colorCache: new Map(),
  tempColorElement: null,
  lastKnownSection: null,
  isUpdating: false,
  pendingColorUpdate: false
};

// Initialize cache
function initializeCache() {
  // Cache header elements
  CACHE.headerElement = document.querySelector(HEADER_CONFIG.headerElement);
  
  // Try each wrapper selector until one is found
  for (const selector of HEADER_CONFIG.wrapperSelectors) {
    CACHE.wrapperElement = document.querySelector(selector);
    if (CACHE.wrapperElement) break;
  }
  
  // Cache sections and their positions
  CACHE.sections = Array.from(document.querySelectorAll(HEADER_CONFIG.monitoredElements));
  
  // Create reusable element for color calculations
  CACHE.tempColorElement = document.createElement('div');
  CACHE.tempColorElement.style.position = 'absolute';
  CACHE.tempColorElement.style.visibility = 'hidden';
  CACHE.tempColorElement.style.pointerEvents = 'none';
  document.body.appendChild(CACHE.tempColorElement);
  
  // Cache section metadata
  updateSectionsCache();
}

// Update sections cache (call when DOM changes)
function updateSectionsCache() {
  CACHE.sections = Array.from(document.querySelectorAll(HEADER_CONFIG.monitoredElements));
  CACHE.sectionsData.clear();
  
  CACHE.sections.forEach((section, index) => {
    const sectionData = {
      index,
      isExcluded: section.hasAttribute(EXCLUSION_CONFIG.sectionAttribute)
    };
    
    // Dynamically check for all section types defined in SECTION_TYPES
    Object.keys(SECTION_TYPES).forEach(attribute => {
      sectionData[attribute] = section.hasAttribute(attribute);
    });
    
    CACHE.sectionsData.set(section, sectionData);
  });
}

// Function to remove all section classes from :root only
function removeAllSectionClasses() {
  const rootElement = document.documentElement;
  
  // Remove classes from :root only
  rootElement.classList.remove(...ALL_CLASSES_TO_REMOVE);
}

// Function to update the CSS variable on :root
function updateRootBackgroundVariable(color) {
  document.documentElement.style.setProperty('--current-header-bg', color);
}

// Function to apply classes to :root only
function applyClassesToRoot(headerClass, textClass) {
  const rootElement = document.documentElement;
  
  // Apply header class to :root only
  if (headerClass) {
    rootElement.classList.add(headerClass);
  }
  
  // Apply text class to :root only
  if (textClass) {
    rootElement.classList.add(textClass);
  }
}

// Optimized color conversion using cached temp element
function getRGBValues(color) {
  const cacheKey = color;
  if (CACHE.colorCache.has(cacheKey)) {
    return CACHE.colorCache.get(cacheKey);
  }
  
  CACHE.tempColorElement.style.color = color;
  const computedColor = window.getComputedStyle(CACHE.tempColorElement).color;
  
  // Extract RGB values
  const match = computedColor.match(/rgba?\((\d+),\s*(\d+),\s*(\d+)/);
  const result = match ? {
    r: parseInt(match[1]),
    g: parseInt(match[2]),
    b: parseInt(match[3])
  } : { r: 255, g: 255, b: 255 };
  
  // Cache the result
  CACHE.colorCache.set(cacheKey, result);
  return result;
}

// Function to check if a background color is transparent or empty
function isBackgroundTransparent(color) {
  if (!color) return true;
  
  const transparentValues = [
    'transparent',
    'rgba(0, 0, 0, 0)',
    'rgba(0,0,0,0)',
    'initial',
    'inherit',
    ''
  ];
  
  return transparentValues.includes(color.toLowerCase().replace(/\s/g, ''));
}

// Function to determine if a color is dark or light
function isColorDark(color) {
  if (color === 'transparent' || color === 'rgba(0, 0, 0, 0)') {
    return false;
  }
  
  const rgb = getRGBValues(color);
  const luminance = (0.299 * rgb.r + 0.587 * rgb.g + 0.114 * rgb.b) / 255;
  return luminance < 0.5;
}

// Optimized section detection using cached data
function getCurrentSection() {
  if (!CACHE.headerElement || CACHE.sections.length === 0) return null;
  
  const headerHeight = CACHE.headerElement.offsetHeight;
  
  // Quick check if we're still in the same section
  if (CACHE.lastKnownSection) {
    const rect = CACHE.lastKnownSection.getBoundingClientRect();
    if (rect.top <= headerHeight && rect.bottom > headerHeight) {
      return CACHE.lastKnownSection;
    }
  }
  
  // Binary search would be ideal here, but simple loop is sufficient for most cases
  for (const section of CACHE.sections) {
    const rect = section.getBoundingClientRect();
    if (rect.top <= headerHeight && rect.bottom > headerHeight) {
      CACHE.lastKnownSection = section;
      return section;
    }
  }
  
  const firstSection = CACHE.sections[0] || null;
  CACHE.lastKnownSection = firstSection;
  return firstSection;
}

// Function to get computed background color with caching
function getComputedBackgroundColor(element) {
  const cacheKey = element;
  if (CACHE.colorCache.has(cacheKey)) {
    return CACHE.colorCache.get(cacheKey);
  }
  
  const bgColor = window.getComputedStyle(element).backgroundColor;
  CACHE.colorCache.set(cacheKey, bgColor);
  return bgColor;
}

// Function to initialize original header background color
function initializeOriginalHeaderBgColor() {
  if (CACHE.headerElement) {
    HEADER_CONFIG.originalHeaderBgColor = window.getComputedStyle(CACHE.headerElement).backgroundColor;
  }
}

// Function to determine header style configuration based on section
function determineHeaderConfig(section) {
  if (!section) return null;
  
  const sectionData = CACHE.sectionsData.get(section);
  if (!sectionData) return null;
  
  // If section is excluded, return null to skip styling
  if (sectionData.isExcluded) {
    return null;
  }
  
  // Dynamically check for any section type defined in SECTION_TYPES
  for (const [attribute, headerClass] of Object.entries(SECTION_TYPES)) {
    if (sectionData[attribute]) {
      return {
        backgroundColor: null,
        headerClass: headerClass,
        needsWhiteText: null,
        isSpecialSection: true
      };
    }
  }
  
  // Get the actual background color of the section
  const sectionBgColor = getComputedBackgroundColor(section);
  
  if (isBackgroundTransparent(sectionBgColor)) {
    return {
      backgroundColor: HEADER_CONFIG.originalHeaderBgColor || 'rgb(255, 255, 255)',
      headerClass: null,
      needsWhiteText: isColorDark(HEADER_CONFIG.originalHeaderBgColor || 'rgb(255, 255, 255)'),
      isSpecialSection: false
    };
  }
  
  const needsWhiteText = isColorDark(sectionBgColor);
  
  return {
    backgroundColor: sectionBgColor,
    headerClass: null,
    needsWhiteText: needsWhiteText,
    isSpecialSection: false
  };
}

// Function to apply styles (background color to header, classes to :root only)
function applyHeaderStyles(config) {
  if (!CACHE.headerElement || !config) return;
  
  const elementsToStyle = [CACHE.headerElement, CACHE.wrapperElement].filter(Boolean);
  
  // Use requestAnimationFrame for smooth visual updates
  requestAnimationFrame(() => {
    // First, remove all section classes and text classes from :root only
    removeAllSectionClasses();
    
    // Update the root CSS variable with background color
    if (config.backgroundColor !== null) {
      const appliedBgColor = config.backgroundColor || '';
      updateRootBackgroundVariable(appliedBgColor);
    } else {
      updateRootBackgroundVariable('');
    }
    
    // Determine text class to apply
    const textClass = config.needsWhiteText !== null 
      ? (config.needsWhiteText ? TEXT_CLASSES.light : TEXT_CLASSES.dark)
      : null;
    
    // Apply classes to :root only
    applyClassesToRoot(config.headerClass, textClass);
    
    // Handle background color on header elements only
    elementsToStyle.forEach(element => {
      if (config.backgroundColor !== null) {
        const appliedBgColor = config.backgroundColor || '';
        element.style.backgroundColor = appliedBgColor;
      } else {
        element.style.backgroundColor = '';
      }
    });
    
    // For special sections, allow CSS to apply first, then get computed background color
    if (config.isSpecialSection && config.headerClass) {
      // Use setTimeout(0) to ensure CSS has been applied, but batch multiple calls
      if (!CACHE.pendingColorUpdate) {
        CACHE.pendingColorUpdate = true;
        setTimeout(() => {
          // Process all elements that need color updates in this batch
          elementsToStyle.forEach(el => {
            // Check if element has any of the section classes (though they're not applied anymore)
            const hasSectionClass = Object.values(SECTION_TYPES).some(className => 
              el.classList.contains(className)
            );
            
            if (hasSectionClass) {
              const computedBgColor = getComputedBackgroundColor(el);
              updateRootBackgroundVariable(computedBgColor);
            }
          });
          CACHE.pendingColorUpdate = false;
        }, 50);
      }
    }
    
    CACHE.isUpdating = false;
  });
}

// Throttled update function using requestAnimationFrame
function updateHeaderStyles() {
  // Prevent multiple updates in the same frame
  if (CACHE.isUpdating) return;
  
  // Apply only on screens larger than the breakpoint
  if (window.innerWidth <= BREAKPOINT_DESKTOP) {
    return;
  }
  
  CACHE.isUpdating = true;
  
  const currentSection = getCurrentSection();
  if (!currentSection) {
    CACHE.isUpdating = false;
    return;
  }
  
  const headerConfig = determineHeaderConfig(currentSection);
  if (!headerConfig) {
    CACHE.isUpdating = false;
    return;
  }
  
  applyHeaderStyles(headerConfig);
}

// Debounce function for resize events (less frequent)
function debounce(func, wait) {
  let timeout;
  return function executedFunction(...args) {
    const later = () => {
      clearTimeout(timeout);
      func(...args);
    };
    clearTimeout(timeout);
    timeout = setTimeout(later, wait);
  };
}

// RAF-based throttle for scroll events
let rafId = null;
function throttleWithRAF(func) {
  return function(...args) {
    if (rafId) return;
    
    rafId = requestAnimationFrame(() => {
      func.apply(this, args);
      rafId = null;
    });
  };
}

// Initialize everything
function initialize() {
  initializeCache();
  initializeOriginalHeaderBgColor();
  updateHeaderStyles();
}

// Cleanup function
function cleanup() {
  if (CACHE.tempColorElement && CACHE.tempColorElement.parentNode) {
    CACHE.tempColorElement.parentNode.removeChild(CACHE.tempColorElement);
  }
  if (rafId) {
    cancelAnimationFrame(rafId);
  }
}

// Initialize on page load
if (document.readyState === 'loading') {
  document.addEventListener('DOMContentLoaded', initialize);
} else {
  initialize();
}

// Create optimized event handlers
const throttledUpdateHeaderStyles = throttleWithRAF(updateHeaderStyles);
const debouncedUpdateHeaderStyles = debounce(() => {
  updateSectionsCache(); // Refresh cache on resize
  updateHeaderStyles();
}, DEBOUNCE_DELAY);

// Add event listeners with passive option for better performance
window.addEventListener('scroll', throttledUpdateHeaderStyles, { passive: true });
window.addEventListener('resize', debouncedUpdateHeaderStyles, { passive: true });

// Cleanup on page unload
window.addEventListener('beforeunload', cleanup);

Case studies

College Rec Center Must-Haves

College and University recreation facilities can offer different challenges than those of other markets. The student and staff population at a college often includes a wide variety of fitness levels and interests, and while paid memberships are usually less prevalent (or completely non-existent), it is still important for facility managers to do their best in meeting the needs of the school’s fitness community. Precor recently took a look at this problem, and were able to determine 4 major factors that play a large part in determining a top-notch recreation center. Below are those four factors, as well as our personal experience with how they play out in this market.

College rec center basics

College and University recreation facilities can offer different challenges than those of other markets. The student and staff population at a college often includes a wide variety of fitness levels and interests, and while paid memberships are usually less prevalent (or completely non-existent), it is still important for facility managers to do their best in meeting the needs of the school’s fitness community. Precor recently took a look at this problem, and were able to determine 4 major factors that play a large part in determining a top-notch recreation center. Below are those four factors, as well as our personal experience with how they play out in this market.

1. A Variety of Equipment

From the article, “College is a great time for students to branch out and discover the kinds of fitness they’re into.”

College students typically fall into the demographic of early-adopters, or those that are willing to try out a new fitness trend. While it may be impractical to fill your rec center with the ever-evolving “latest & greatest”, it is important to offer a large variety of equipment and programs to accommodate the different fitness interests and abilities often found in a college setting. At SUNY Cortland’s new student rec center, we were able to offer them everything from your typical Cardio floor, to a team cycling studio, to a functional fitness area dedicated to group HIIT training.

2. A Space to Connect

From the article, “Having room for group exercise classes is perfect for getting students involved in fitness, and a way for them to meet others. This allows you to appeal to a much broader range of students, versus solely having fitness equipment.”

In our experience, space dedicated to group exercise classes can have a very positive effect on a University rec center. We’ve found that one of the best ways to promote friendly competition and collaboration within a rec facility is with IFH Expresso Bikes. These virtual reality bikes allow riders to race head-to-head with a friend, or even set a time and send a recording of this ride (their Ghost) to a friend as a challenge. With Expresso’s monthly contests, groups of students can also work together to compete against other universities across the country. While there are many other collaborative programs and products available in our product portfolio, we’ve found Expresso bikes to be one of the absolute best at engaging and connecting a facility’s fitness community.

Marist College uses Expresso bikes to keep their students engaged.Marist College uses Expresso bikes to keep their students engaged.

3. An Open Environment

From the article, “…make sure there’s ample room for people to actually breathe and stretch without interfering with those directly around them”

A tricky proposition in the facility planning process is finding a balance between having enough equipment to satisfy the college population, while leaving enough space to keep the facility functionally and aesthetically pleasing. Our ASF sales reps are each individually trained on space planning with AutoCAD, a precision planning tool. We also have a full-time space planner on hand to help with more complicated room designs. With so much experience in floor planning for college and university recreation centers, our sales reps are able to maximize your budget while maintaining high space functionality, keeping facility users satisfied and comfortable.

The Student Union at Campbell University hosts a range of equipment options in a floor plan designed for optimal flow and convenience.

The Student Union at Campbell University hosts a range of equipment options in a floor plan designed for optimal flow and convenience.

4. A Motivation Factor

From the article, “Give students and staff a reason to keep coming back. Preva accounts can be used to set and track fitness goals…”

While the first three factors will certainly help with user engagement, it’s important to keep a sharp focus on motivating students to keep coming back. While Expresso Bikes and Functional Fitness spaces can pique the interest of exercisers to try something new, goal setting and tracking can play a major part in user engagement. Nothing tracks and motivates better than Precor’s Preva software, which allows users to sign in, set a goal, and keep track of their progress throughout the week. Compatible with iPhone and Androids, the Preva App will even remind its users to get up and get to the gym to maintain their weekly pace – an automatic reminder to visit your recreation center!

The Preva on-console experience automatically syncs to the Preva Mobile app - so you can track your progress anywhere, anytime.

The Preva on-console experience automatically syncs to the Preva Mobile app – so you can track your progress anywhere, anytime.

Check out the entire article from Precor here.

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eight winds gym

Eight Winds

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Ford Field & River club

Ford Field & River Club

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GeerHouse Apartments

GeerHouse Apartments

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