/* Modern Hamburger Menu Design for WebV4 */
/* ======================================= */

/* CSS Custom Properties for Theming */
:root {
  /* Light Mode Colors */
  --hamburger-color: #333;
  --hamburger-hover-color: #000;
  --navbar-bg: #f8f9fa;
  --navbar-border: #dee2e6;
  --menu-bg: #ffffff;
  --menu-text: #333;
  --menu-hover-bg: #f8f9fa;
  --menu-shadow: rgba(0, 0, 0, 0.1);
  
  /* Animation Properties */
  --hamburger-animation-duration: 0.3s;
  --menu-animation-duration: 0.4s;
  
  /* Dimensions */
  --hamburger-size: 44px;
  --hamburger-line-height: 3px;
  --hamburger-line-spacing: 6px;
  --hamburger-padding: 10px;
}

/* Dark Mode Custom Properties */
body.dark {
  --hamburger-color: #f8f9fa;
  --hamburger-hover-color: #ffffff;
  --navbar-bg: #212529;
  --navbar-border: #495057;
  --menu-bg: #343a40;
  --menu-text: #f8f9fa;
  --menu-hover-bg: #495057;
  --menu-shadow: rgba(0, 0, 0, 0.3);
}

/* Hamburger Button Styling */
.navbar-toggler {
  position: relative;
  width: var(--hamburger-size);
  height: var(--hamburger-size);
  padding: var(--hamburger-padding);
  border: 1px solid transparent;
  border-radius: 4px;
  background: transparent;
  cursor: pointer;
  transition: all var(--hamburger-animation-duration) ease;
  overflow: visible;
  z-index: 1040;
}

/* Focus State */
.navbar-toggler:focus {
  outline: 2px solid var(--hamburger-color);
  outline-offset: 2px;
  box-shadow: none;
}

/* Remove Bootstrap's Default Icon */
.navbar-toggler-icon {
  display: none;
}

/* Custom Hamburger Lines Container */
.hamburger-lines {
  position: relative;
  display: block;
  width: 24px;
  height: 20px;
  margin: 0 auto;
}

/* Individual Hamburger Lines */
.hamburger-line {
  position: absolute;
  display: block;
  width: 100%;
  height: var(--hamburger-line-height);
  background: var(--hamburger-color);
  border-radius: 2px;
  transition: all var(--hamburger-animation-duration) cubic-bezier(0.68, -0.55, 0.265, 1.55);
  transform-origin: center;
}

/* Line Positions */
.hamburger-line:nth-child(1) {
  top: 0;
}

.hamburger-line:nth-child(2) {
  top: 50%;
  transform: translateY(-50%);
}

.hamburger-line:nth-child(3) {
  bottom: 0;
}

/* Hover State */
.navbar-toggler:hover .hamburger-line {
  background: var(--hamburger-hover-color);
}

/* Active/Open State - Transform to X */
/* Note: Bootstrap adds 'collapsed' class when menu is CLOSED, not open */
.navbar-toggler:not(.collapsed) .hamburger-line:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.navbar-toggler:not(.collapsed) .hamburger-line:nth-child(2) {
  opacity: 0;
  transform: translateX(-10px);
}

.navbar-toggler:not(.collapsed) .hamburger-line:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* Mobile Menu Container */
@media (max-width: 991.98px) {
  .navbar-collapse {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--menu-bg);
    border-top: 1px solid var(--navbar-border);
    box-shadow: 0 4px 6px var(--menu-shadow);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--menu-animation-duration) ease-in-out;
  }
  
  .navbar-collapse.show {
    max-height: calc(100vh - 56px);
    overflow-y: auto;
  }
  
  /* Menu Items */
  .navbar-nav {
    padding: 1rem 0;
  }
  
  .navbar-nav .nav-item {
    border-bottom: 1px solid var(--navbar-border);
  }
  
  .navbar-nav .nav-item:last-child {
    border-bottom: none;
  }
  
  .navbar-nav .nav-link {
    color: var(--menu-text);
    padding: 0.75rem 1.5rem;
    transition: background-color 0.2s ease;
  }
  
  .navbar-nav .nav-link:hover,
  .navbar-nav .nav-link:focus {
    background: var(--menu-hover-bg);
    color: var(--menu-text);
  }
  
  /* Dropdown Menus in Mobile */
  .navbar-nav .dropdown-menu {
    position: static;
    float: none;
    width: 100%;
    margin: 0;
    background: var(--menu-hover-bg);
    border: none;
    box-shadow: none;
  }
  
  .navbar-nav .dropdown-item {
    padding: 0.5rem 2.5rem;
    color: var(--menu-text);
  }
  
  .navbar-nav .dropdown-item:hover,
  .navbar-nav .dropdown-item:focus {
    background: var(--navbar-border);
  }
}

/* Smooth Scrolling for Mobile Menu */
@media (max-width: 991.98px) {
  .navbar-collapse {
    -webkit-overflow-scrolling: touch;
  }
  
  /* Prevent body scroll when menu is open */
  body.navbar-menu-open {
    overflow: hidden;
    position: fixed;
    width: 100%;
  }
}

/* Accessibility Improvements */
.navbar-toggler[aria-expanded="true"] {
  background: rgba(0, 0, 0, 0.05);
}

body.dark .navbar-toggler[aria-expanded="true"] {
  background: rgba(255, 255, 255, 0.05);
}

/* Screen Reader Text */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Keyboard Navigation Indicators */
.navbar-toggler:focus-visible,
.nav-link:focus-visible,
.dropdown-item:focus-visible {
  outline: 2px solid var(--hamburger-color);
  outline-offset: 2px;
}

/* Animation Performance Optimization */
.hamburger-line,
.navbar-collapse,
.nav-link {
  will-change: transform, opacity, max-height;
}

/* Desktop Styles - Hide Hamburger */
@media (min-width: 992px) {
  .navbar-toggler {
    display: none;
  }
  
  .navbar-collapse {
    display: flex !important;
    position: static;
    max-height: none;
    box-shadow: none;
    border: none;
    background: transparent;
  }
  
  body.navbar-menu-open {
    overflow: auto;
    position: static;
  }
}

/* Fix for Bootstrap 5 Compatibility */
.navbar-expand-lg .navbar-toggler {
  display: block;
}

@media (min-width: 992px) {
  .navbar-expand-lg .navbar-toggler {
    display: none;
  }
}

/* Override Any Previous Hamburger Fixes */
.navbar-toggler-icon::before,
.navbar-toggler-icon::after {
  display: none !important;
}

/* Clean up old SVG background */
.navbar-toggler-icon {
  background-image: none !important;
}

/* Override problematic overflow-x from offcanvas.css */
@media (max-width: 991.98px) {
  /* Only hide overflow when menu is closed */
  body:not(.navbar-menu-open) {
    overflow-x: hidden;
  }
}

/* Ensure proper navbar spacing */
body {
  padding-top: 56px; /* Standard navbar height */
}

@media (min-width: 992px) {
  body {
    padding-top: 70px; /* Match existing desktop spacing */
  }
}