/* Site header sticky behavior */
.site-header {
  position: fixed;
  top: var(--drupal-displace-offset-top, 0px);
  left: var(--drupal-displace-offset-left, 0px);
  right: var(--drupal-displace-offset-right, 0px);
  width: calc(100% - var(--drupal-displace-offset-left, 0px) - var(--drupal-displace-offset-right, 0px));
  z-index: 50;
  transition: background-color 0.3s ease, box-shadow 0.3s ease, backdrop-filter 0.3s ease;
}

.site-header.is-scrolled {
  background-color: rgba(28, 18, 55, 0.9);
  backdrop-filter: blur(8px);
  box-shadow: 0 2px 4px rgba(28, 18, 55, 0.6);
}

/* Solid background when mobile menu is open */
.site-header.is-menu-open {
  background-color: var(--color-primary-dark);
}

.site-header.is-menu-open .header-gradient {
  opacity: 0;
}

.site-header.is-scrolled .header-gradient {
  opacity: 0;
}

.header-top-row > div {
  padding-bottom: 0.5rem;
}

/* Header top gradient */
.header-gradient {
  background: linear-gradient(
    to bottom,
    rgba(28, 18, 55, 0.7) 0%,
    rgba(28, 18, 55, 0.4) 50%,
    transparent 100%
  );
  transition: opacity 0.3s ease;
}

/* Desktop header layout - align items stretch so both sides same height */
.header-desktop {
  align-items: stretch;
}

/* Logo - smooth scale on scroll */
.header-logo {
  transform-origin: left center;
  will-change: transform;
  display: flex;
  align-items: center;
}

.header-logo img {
  display: block;
}

/* Right side container - flex column, same height as logo */
/* padding-top reserves space for the absolutely positioned top row */
.header-right {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: flex-end;
  position: relative;
  padding-top: 2.5rem;
  min-width: 0;
  flex: 1 1 0;
  max-width: calc(100% - 10rem); /* Leave space for logo */
}

/* Top row - absolutely positioned at top */
.header-top-row {
  position: absolute;
  top: 0;
  right: 0;
  transform-origin: top right;
  will-change: opacity;
  z-index: 10;
}

/* Nav row - stays at bottom, JS animates to center on scroll */
.header-nav-row {
  margin-top: auto;
  will-change: transform;
  max-width: 100%;
  min-width: 0;
}

/* Mobile menu */
.mobile-menu {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.mobile-menu.is-open {
  max-height: 100vh;
}

/* Mobile navigation link hover */
.mobile-nav__link {
  transition: text-decoration 0.2s ease;
}

.mobile-nav__link:hover,
.mobile-nav__link.is-active {
  text-decoration: underline;
  text-underline-offset: 4px;
}

/* Mobile CTA - matches Admitere pill style */
.mobile-nav__cta {
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.25rem 1.5rem;
  background-color: var(--color-light);
  color: var(--color-primary);
  border-radius: 9999px;
  transition: opacity 0.2s ease;
}

.mobile-nav__cta:hover {
  opacity: 0.9;
}

/* Hamburger icon animation */
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: white;
  margin: 5px 0;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.hamburger.is-active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.is-active span:nth-child(2) {
  opacity: 0;
}

.hamburger.is-active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}