/* ============================================
   Shared Delcon site header (main + Pental page)
   Variables scoped to .site-header so Pental page :root is unchanged.
   ============================================ */

html {
  scroll-padding-top: 70px;
}

.site-header {
  --clr-primary-dark: #1a3a5c;
  --clr-accent: #f0a500;
  --clr-white: #ffffff;
  --font-heading: 'Raleway', sans-serif;
  --nav-height: 70px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.16);
  --transition: 0.3s ease;

  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: background var(--transition), box-shadow var(--transition);
}

.navbar {
  background: rgba(26, 42, 53, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: background var(--transition), box-shadow var(--transition);
}

.site-header.scrolled .navbar {
  background: var(--clr-primary-dark);
  box-shadow: var(--shadow-md);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
  padding: 0 1.25rem;
  max-width: 1200px;
  margin: 0 auto;
}

.nav-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.logo-img {
  height: 50px;
  width: auto;
  object-fit: contain;
}

.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 20px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1100;
}

.hamburger-line {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--clr-white);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
  transform-origin: center;
}

.nav-toggle.open .hamburger-line:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}

.nav-toggle.open .hamburger-line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.nav-toggle.open .hamburger-line:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

.nav-menu {
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background: var(--clr-primary-dark);
  display: flex;
  flex-direction: column;
  padding: 1.5rem 1.25rem 2rem;
  gap: 0.25rem;
  transform: translateY(calc(-100% - var(--nav-height)));
  transition: transform var(--transition);
  z-index: 999;
  box-shadow: var(--shadow-lg);
  pointer-events: none;
}

.nav-menu.open {
  transform: translateY(0);
  pointer-events: auto;
}

.nav-link {
  display: block;
  padding: 0.85rem 1rem;
  color: rgba(255, 255, 255, 0.88);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1rem;
  border-radius: var(--radius-sm);
  transition: background var(--transition), color var(--transition);
}

.nav-link:hover,
.nav-link.active {
  background: rgba(255, 255, 255, 0.1);
  color: var(--clr-accent);
}

.nav-link i {
  font-size: 0.75em;
  margin-left: 0.3rem;
}

.has-dropdown {
  position: relative;
}

.dropdown {
  display: none;
  padding-left: 1rem;
  border-left: 2px solid var(--clr-accent);
  margin: 0.25rem 0 0.25rem 1rem;
}

.has-dropdown.open .dropdown {
  display: block;
}

.dropdown-link {
  display: block;
  padding: 0.6rem 1rem;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
  transition: color var(--transition);
}

.dropdown-link:hover {
  color: var(--clr-accent);
}

@media (min-width: 900px) {
  .nav-toggle {
    display: none;
  }

  .nav-menu {
    position: static;
    transform: none;
    pointer-events: auto;
    flex-direction: row;
    align-items: center;
    background: transparent;
    padding: 0;
    gap: 0;
    box-shadow: none;
  }

  .nav-link {
    padding: 0.5rem 0.85rem;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.88);
  }

  .has-dropdown {
    position: relative;
  }

  .dropdown {
    display: block;
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 220px;
    background: var(--clr-primary-dark);
    border-left: none;
    margin: 0;
    padding: 0.5rem 0 0.5rem;
    padding-top: 0.75rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
    pointer-events: none;
    z-index: 200;
  }

  .dropdown::before {
    content: '';
    position: absolute;
    top: -0.5rem;
    left: 0;
    right: 0;
    height: 0.5rem;
  }

  .has-dropdown:hover .dropdown,
  .has-dropdown.open .dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
  }

  .dropdown-link {
    padding: 0.65rem 1.25rem;
  }
}

.nav-pental > .nav-link,
.nav-delcon > .nav-link,
.nav-scs > .nav-link {
  color: var(--clr-accent) !important;
  font-weight: 700;
}

.nav-pental > .nav-link:hover,
.nav-pental > .nav-link:focus-visible,
.nav-delcon > .nav-link:hover,
.nav-delcon > .nav-link:focus-visible,
.nav-scs > .nav-link:hover,
.nav-scs > .nav-link:focus-visible {
  color: #ffd666 !important;
  background: rgba(255, 255, 255, 0.08);
}

.nav-pental > .nav-link.active {
  color: var(--clr-accent) !important;
  background: rgba(240, 165, 0, 0.15);
}

@media (min-width: 900px) {
  .nav-menu > li.nav-pental,
  .nav-menu > li.nav-delcon,
  .nav-menu > li.nav-scs {
    border-left: 1px solid rgba(255, 255, 255, 0.22);
    margin-left: 0.5rem;
    padding-left: 0.75rem;
  }
}

/* Pentel logo on dark bar — slightly taller than Delcon wordmark */
.logo-img--pental {
  height: 52px;
}

.logo-img--scs {
  height: 52px;
}