:root {
  --sb-header-height: 80px;
  --sb-header-mobile-height: 68px;
  --sb-header-bg: #ffffff; /* Solid white */
  --sb-header-bg-solid: #ffffff;
  --sb-header-border: #e9e9e9;
  --sb-nav-text: #1a1a1a;
  --sb-nav-muted: #666666;
  --sb-brand-primary: #f1611b; /* Shapebytes primary color */
  --sb-brand-primary-hover: #d65314;
  --sb-mega-menu-radius: 18px;
  --sb-dropdown-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
  --sb-transition-default: 200ms ease-in-out;
}

/* Reset for the new header to avoid conflicts with global styles */
.sb-header {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Inter', 'Roboto', sans-serif; /* Fallbacks */
}

.sb-header * {
  box-sizing: inherit;
}

/* Base Header Styles */
.sb-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--sb-header-height);
  background-color: var(--sb-header-bg);
  border-bottom: 1px solid transparent;
  z-index: 1002; /* Must be higher than drawer (1001) */
  transition: background-color var(--sb-transition-default), border-color var(--sb-transition-default), box-shadow var(--sb-transition-default);
  display: flex;
  align-items: center;
  backdrop-filter: blur(8px);
}

.sb-header.is-sticky {
  background-color: var(--sb-header-bg-solid);
  border-bottom: 1px solid var(--sb-header-border);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
}

.sb-header-container {
  width: 100%;
  max-width: 1440px; /* Adapts to large screens */
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
  position: relative; /* Anchor for dropdowns */
}

/* Logo */
.sb-header-logo {
  display: flex;
  align-items: center;
  z-index: 1001; /* Keeps logo above mobile menu overlay */
}

.sb-header-logo img {
  width: 150px;
  max-width: 100%;
  height: auto;
  transition: width var(--sb-transition-default);
}

/* Desktop Navigation */
.sb-desktop-nav {
  display: flex;
  align-items: center;
  height: 100%;
}

.sb-nav-list {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  height: 100%;
  align-items: center;
  gap: 32px; /* Horizontal gap between items */
}

.sb-nav-item {
  height: 100%;
  display: flex;
  align-items: center;
  position: relative;
}

.sb-nav-item[data-nav-item="solutions"] {
  position: static; /* Let mega menu position relative to header container */
}

.sb-nav-link {
  position: relative;
  color: var(--sb-nav-text);
  text-decoration: none;
  font-weight: 500;
  font-size: 15px;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: color var(--sb-transition-default);
  cursor: pointer;
  height: 100%;
}

.sb-nav-link:hover,
.sb-nav-link:focus-visible,
.sb-nav-item.is-active > .sb-nav-link {
  color: var(--sb-brand-primary);
}

/* Active State Dot/Underline */
.sb-nav-item.is-active > .sb-nav-link::after {
  content: '';
  position: absolute;
  bottom: 24px; /* Adjust based on header height */
  left: 50%;
  transform: translateX(-50%);
  width: 6px;
  height: 6px;
  background-color: var(--sb-brand-primary);
  border-radius: 50%;
}

/* Chevron Icon */
.sb-chevron-icon {
  width: 12px;
  height: 12px;
  fill: currentColor;
  transition: transform var(--sb-transition-default);
}

.sb-nav-item:hover .sb-chevron-icon,
.sb-nav-item:focus-within .sb-chevron-icon {
  transform: rotate(180deg);
}

/* Dropdowns Shared */
.sb-dropdown {
  position: absolute;
  top: 100%;
  left: 50%; /* Default for medium/small */
  transform: translateX(-50%) translateY(8px);
  background: var(--sb-header-bg-solid);
  border: 1px solid var(--sb-header-border);
  border-radius: var(--sb-mega-menu-radius);
  box-shadow: var(--sb-dropdown-shadow);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--sb-transition-default), transform var(--sb-transition-default), visibility var(--sb-transition-default);
  pointer-events: none;
  padding: 24px;
}

/* Specific for Mega Menu */
.sb-dropdown.sb-mega-menu {
  left: 24px; /* Align with container padding */
  transform: translateY(8px);
}

.sb-nav-item:hover .sb-dropdown.sb-mega-menu,
.sb-nav-item:focus-within .sb-dropdown.sb-mega-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

.sb-nav-item:hover .sb-dropdown:not(.sb-mega-menu),
.sb-nav-item:focus-within .sb-dropdown:not(.sb-mega-menu) {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

/* Adding an invisible hover bridge to prevent sudden closing */
.sb-dropdown::before {
  content: '';
  position: absolute;
  top: -15px;
  left: 0;
  width: 100%;
  height: 15px;
}

/* Dropdown Sizing */
.sb-dropdown.sb-mega-menu {
  width: 1100px;
  max-width: 90vw; /* Keep within viewport */
}

.sb-dropdown.sb-medium-menu {
  width: 600px;
}

.sb-dropdown.sb-small-menu {
  width: 300px;
}

/* Mega Menu Grid Layout */
.sb-mega-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
}

.sb-medium-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

/* Dropdown Content */
.sb-dropdown-category {
  display: flex;
  flex-direction: column;
}

.sb-dropdown-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--sb-nav-text);
  margin: 0 0 8px 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.sb-dropdown-desc {
  font-size: 13px;
  line-height: 1.4;
  color: var(--sb-nav-muted);
  margin: 0 0 16px 0;
}

.sb-dropdown-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sb-dropdown-link {
  font-size: 14px;
  color: var(--sb-nav-text);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  transition: color var(--sb-transition-default);
}

.sb-dropdown-link::after {
  content: '→';
  margin-left: 6px;
  font-size: 12px;
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity var(--sb-transition-default), transform var(--sb-transition-default);
}

.sb-dropdown-link:hover,
.sb-dropdown-link:focus-visible {
  color: var(--sb-brand-primary);
}

.sb-dropdown-link:hover::after,
.sb-dropdown-link:focus-visible::after {
  opacity: 1;
  transform: translateX(0);
}

/* Small Dropdown List */
.sb-small-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sb-small-list .sb-dropdown-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.sb-small-list .sb-dropdown-link::after {
  opacity: 1;
  color: var(--sb-nav-muted);
  transform: none;
  transition: color var(--sb-transition-default);
}

.sb-small-list .sb-dropdown-link:hover::after {
  color: var(--sb-brand-primary);
}

/* Products Dropdown Specific */
.sb-product-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px;
  border-radius: 8px;
  transition: background-color var(--sb-transition-default);
  text-decoration: none;
  color: var(--sb-nav-text);
}
.sb-product-item:hover, .sb-product-item:focus-visible {
  background-color: #f9f9f9;
}
.sb-product-item strong {
  font-weight: 600;
  font-size: 15px;
  color: var(--sb-nav-text);
  transition: color var(--sb-transition-default);
}
.sb-product-item:hover strong {
  color: var(--sb-brand-primary);
}
.sb-product-item span {
  font-size: 13px;
  color: var(--sb-nav-muted);
  line-height: 1.4;
}
.sb-products-view-all {
  grid-column: 1 / -1;
  margin-top: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--sb-header-border);
  text-align: center;
}
.sb-products-view-all a {
  color: var(--sb-brand-primary);
  font-weight: 600;
  text-decoration: none;
  font-size: 14px;
}
.sb-products-view-all a:hover {
  text-decoration: underline;
}

/* Header CTA */
.sb-header-cta {
  display: flex;
  align-items: center;
  gap: 16px;
}

.sb-btn-primary {
  background-color: var(--sb-brand-primary);
  color: #fff;
  font-weight: 600;
  font-size: 15px;
  padding: 12px 24px;
  border-radius: 30px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: background-color var(--sb-transition-default), transform var(--sb-transition-default);
  border: none;
  cursor: pointer;
}

.sb-btn-primary:hover,
.sb-btn-primary:focus-visible {
  background-color: var(--sb-brand-primary-hover);
  color: #fff;
  transform: translateY(-1px);
}

/* Mobile Hamburger Toggle */
.sb-mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 1001;
}

.sb-hamburger-icon {
  width: 24px;
  height: 24px;
  fill: var(--sb-nav-text);
}

/* Mobile Drawer */
.sb-mobile-drawer {
  display: none;
}

/* -------------------------------------------------------------------------
   RESPONSIVE (Max 992px)
   ------------------------------------------------------------------------- */
@media (max-width: 992px) {
  .sb-header {
    height: var(--sb-header-mobile-height);
  }

  .sb-header-logo img {
    width: 140px;
  }

  .sb-desktop-nav {
    display: none;
  }

  .sb-header-cta .sb-btn-primary {
    display: none; /* Hidden on header, moved to drawer */
  }

  .sb-mobile-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  /* Drawer Overlay */
  .sb-mobile-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--sb-transition-default);
  }

  .sb-mobile-overlay.is-active {
    opacity: 1;
    visibility: visible;
  }

  /* Drawer Container */
  .sb-mobile-drawer {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    right: 0;
    width: 100%;
    max-width: 420px;
    height: 100%;
    background-color: var(--sb-header-bg-solid);
    z-index: 1000;
    transform: translateX(100%);
    transition: transform 300ms cubic-bezier(0.4, 0, 0.2, 1);
    overflow-y: auto;
    padding-top: var(--sb-header-mobile-height); /* Leave space for logo/close */
  }

  .sb-mobile-drawer.is-active {
    transform: translateX(0);
  }

  /* Full screen drawer on very small screens */
  @media (max-width: 576px) {
    .sb-mobile-drawer {
      max-width: 100%;
    }
  }

  /* Mobile Nav List */
  .sb-mobile-nav {
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
  }

  .sb-mobile-nav-item {
    border-bottom: 1px solid var(--sb-header-border);
  }

  .sb-mobile-nav-link,
  .sb-mobile-accordion-btn {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 16px 0;
    font-size: 16px;
    font-weight: 600;
    color: var(--sb-nav-text);
    text-decoration: none;
    background: none;
    border: none;
    cursor: pointer;
  }
  
  .sb-mobile-nav-link:hover,
  .sb-mobile-accordion-btn:hover {
    color: var(--sb-brand-primary);
  }

  /* Mobile Accordion Content */
  .sb-mobile-accordion-content {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows var(--sb-transition-default);
  }

  .sb-mobile-accordion-content > div {
    overflow: hidden;
  }

  .sb-mobile-accordion-btn[aria-expanded="true"] + .sb-mobile-accordion-content {
    grid-template-rows: 1fr;
  }

  .sb-mobile-accordion-btn[aria-expanded="true"] .sb-chevron-icon {
    transform: rotate(180deg);
  }

  /* Nested Categories in Mobile Drawer */
  .sb-mobile-category {
    padding-left: 16px;
    padding-bottom: 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
  }

  .sb-mobile-category-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--sb-nav-muted);
    margin: 12px 0 8px 0;
  }

  .sb-mobile-category-link {
    font-size: 15px;
    color: var(--sb-nav-text);
    text-decoration: none;
    padding: 8px 0;
    display: block;
  }

  .sb-mobile-category-link:hover {
    color: var(--sb-brand-primary);
  }

  /* Drawer Footer / CTA */
  .sb-drawer-footer {
    margin-top: auto;
    padding: 24px;
    background-color: #fafafa;
    border-top: 1px solid var(--sb-header-border);
    display: flex;
    flex-direction: column;
    gap: 16px;
  }

  .sb-drawer-footer .sb-btn-primary {
    width: 100%;
    justify-content: center;
  }

  .sb-drawer-secondary-link {
    text-align: center;
    color: var(--sb-nav-muted);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
  }
  
  .sb-drawer-secondary-link:hover {
    color: var(--sb-brand-primary);
  }
}

/* Hide hamburger visually when it's replaced by 'X' or logic */
.sb-close-icon {
  display: none;
  width: 24px;
  height: 24px;
  fill: var(--sb-nav-text);
}

.sb-mobile-toggle[aria-expanded="true"] .sb-hamburger-icon {
  display: none;
}
.sb-mobile-toggle[aria-expanded="true"] .sb-close-icon {
  display: block;
}

/* Narrow Desktop adjustments */
@media (min-width: 993px) and (max-width: 1200px) {
  .sb-nav-list {
    gap: 16px;
  }
  .sb-nav-link {
    font-size: 14px;
  }
  .sb-dropdown.sb-mega-menu {
    width: 900px;
  }
  .sb-mega-grid {
    gap: 16px;
  }
}