:root {
  --header-bg: #ffffff;
  --header-text: #1d2024;
  --header-link-hover: #3d965d;
  --cta-bg: #3d965d;
  --cta-hover: #317b4c;
  --cta-text: #ffffff;
  --dropdown-bg: #ffffff;
  --dropdown-border: #eef2ef;
  --dropdown-shadow: 0 10px 28px rgba(0, 0, 0, 0.1);
  --dropdown-hover: #f6faf7;
  --border-light: #e6ebe7;
}

/* Header Container */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--header-bg);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
  border-bottom: 1px solid var(--border-light);
}

.header-container {
  max-width: 1360px;
  margin: 0 auto;
  padding: 0.9rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

/* Brand Logo */
.brand {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  text-decoration: none;
}

.brand img {
  height: 52px;
  width: auto;
  max-width: 220px;
  object-fit: contain;
  display: block;
}

/* Navigation Layout */
.site-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 0.2rem;
  font-family: var(--font-family);
  font-size: 0.96rem;
  font-weight: 600;
  color: #2c3338;
  text-decoration: none;
  transition: color 0.2s ease;
  white-space: nowrap;
}

.nav-link:hover,
.nav-link.active,
.dropdown:hover > .nav-link {
  color: var(--header-link-hover);
}

.dropdown-chevron {
  display: inline-block;
  transition: transform 0.25s ease;
  color: #555e66;
}

.dropdown:hover .dropdown-chevron,
.dropdown.active .dropdown-chevron {
  transform: rotate(180deg);
  color: var(--header-link-hover);
}

/* Dropdown Submenu */
.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 280px;
  background: var(--dropdown-bg);
  border: 1px solid var(--dropdown-border);
  border-radius: 4px;
  box-shadow: var(--dropdown-shadow);
  padding: 0.5rem 0;
  margin: 0;
  list-style: none;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease;
  z-index: 1050;
}

/* Bridge gap between link and menu */
.dropdown::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  height: 12px;
}

.dropdown:hover .dropdown-menu,
.dropdown.active .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-menu li {
  width: 100%;
}

.dropdown-menu a {
  display: block;
  padding: 0.7rem 1.25rem;
  font-size: 0.88rem;
  font-weight: 500;
  color: #333a40;
  text-decoration: none;
  border-bottom: 1px solid #f2f5f3;
  transition: background-color 0.15s ease, color 0.15s ease, padding-left 0.15s ease;
}

.dropdown-menu li:last-child a {
  border-bottom: none;
}

.dropdown-menu a:hover {
  background-color: var(--dropdown-hover);
  color: var(--header-link-hover);
  padding-left: 1.45rem;
}

/* CTA Button */
.nav-cta {
  flex-shrink: 0;
}

.btn-get-in-touch {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.7rem;
  font-family: var(--font-family);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--cta-text);
  background-color: var(--cta-bg);
  border-radius: 4px;
  text-decoration: none;
  letter-spacing: 0.01em;
  transition: background-color 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
  box-shadow: 0 3px 8px rgba(61, 150, 93, 0.25);
}

.btn-get-in-touch:hover {
  background-color: var(--cta-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(61, 150, 93, 0.35);
}

/* Mobile Toggle */
.mobile-nav-toggle {
  display: none;
  background: transparent;
  border: none;
  padding: 0.5rem;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
}

.hamburger-bar {
  display: block;
  width: 25px;
  height: 3px;
  background-color: #222;
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

/* Responsive Media Queries */
@media (max-width: 1080px) {
  .header-container {
    padding: 0.8rem 1.25rem;
  }
  .nav-list {
    gap: 1rem;
  }
  .nav-link {
    font-size: 0.9rem;
  }
  .btn-get-in-touch {
    padding: 0.6rem 1.2rem;
    font-size: 0.9rem;
  }
}

@media (max-width: 950px) {
  .mobile-nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #ffffff;
    flex-direction: column;
    align-items: stretch;
    padding: 1.25rem;
    border-top: 1px solid var(--border-light);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
    display: none;
    max-height: calc(100vh - 80px);
    overflow-y: auto;
  }

  .site-nav.open {
    display: flex;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .nav-link {
    padding: 0.85rem 0.5rem;
    border-bottom: 1px solid #edf1ee;
    justify-content: space-between;
  }

  .dropdown-menu {
    position: static;
    box-shadow: none;
    border: none;
    border-left: 2px solid var(--header-link-hover);
    margin-left: 0.75rem;
    background: #fbfdfc;
    border-radius: 0;
    opacity: 1;
    visibility: visible;
    transform: none;
    display: none;
  }

  .dropdown.open > .dropdown-menu {
    display: block;
  }

  .dropdown:hover .dropdown-menu {
    transform: none;
  }

  .nav-cta {
    margin-top: 1.25rem;
    text-align: center;
  }

  .btn-get-in-touch {
    width: 100%;
    padding: 0.8rem 1rem;
  }

  .mobile-nav-toggle.open .hamburger-bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }
  .mobile-nav-toggle.open .hamburger-bar:nth-child(2) {
    opacity: 0;
  }
  .mobile-nav-toggle.open .hamburger-bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }
}