/* Header-specific styling for Pannonvera */

.shell-header {
  background: rgba(253, 251, 248, 0.96);
  backdrop-filter: blur(18px);
}

.shell-header__brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.shell-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
}

.shell-header__logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 20%, #ffffff 0, #f7f2ea 40%, #e2dbcf 100%);
  box-shadow: var(--shadow-sm);
  position: relative;
}

.shell-header__logo-mark::after {
  content: "P";
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--gray-800);
}

.shell-header__logo-text {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gray-900);
}

.shell-header__cta-wrap {
  display: none;
}

.shell-header__cta {
  white-space: nowrap;
}

/* Mobile menu toggle */
.shell-header__toggle {
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 6px;
  background: linear-gradient(135deg, #ffffff, #f4ece1);
  cursor: pointer;
  box-shadow: var(--shadow-xs);
}

.shell-header__toggle-bar {
  width: 18px;
  height: 1.5px;
  border-radius: 999px;
  background-color: var(--gray-800);
  transition: transform var(--transition-fast) ease-out,
              opacity var(--transition-fast) ease-out;
}

/* Nav base */
.shell-header__nav {
  position: fixed;
  inset-inline: 0;
  top: 60px;
  background: rgba(253, 251, 248, 0.98);
  border-bottom: 1px solid rgba(0, 0, 0, 0.04);
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal) var(--transition-timing);
}

.shell-header__nav-list {
  flex-direction: column;
  padding: var(--space-4) var(--layout-gutter) var(--space-5);
}

.shell-header__nav-list .site-nav__link {
  display: block;
  padding-block: 0.35rem;
}

/* Open state */
.shell-header--menu-open .shell-header__nav {
  max-height: 360px;
}

.shell-header--menu-open .shell-header__toggle-bar:first-child {
  transform: translateY(3.75px) rotate(45deg);
}

.shell-header--menu-open .shell-header__toggle-bar:last-child {
  transform: translateY(-3.75px) rotate(-45deg);
}
@media (max-width: 960px) {
  .shell-header__nav {
    display: block;
  }
}
/* Desktop layout */
@media (min-width: 960px) {
  .shell-header__toggle {
    display: none;
  }

  .shell-header__nav {
    position: static;
    max-height: none;
    border-bottom: none;
    background: transparent;
  }

  .shell-header__nav-list {
    flex-direction: row;
    padding: 0;
  }

  .shell-header__cta-wrap {
    display: block;
  }
}

/* Active link handling via data attribute (optional enhancement) */
.site-nav__link[aria-current="page"] {
  color: var(--color-primary-strong);
}
<!DOCTYPE html>
<html lang="en">
<head>
    <!-- Google tag (gtag.js) -->
<script async src="https://www.googletagmanager.com/gtag/js?id=AW-18324910143"></script>
<script>
  window.dataLayer = window.dataLayer || [];
  function gtag(){dataLayer.push(arguments);}
  gtag('js', new Date());

  gtag('config', 'AW-18324910143');
</script>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    
</body>
</html>