/* XRE B.V. Header Styles */

.gh-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(18px);
  background: linear-gradient(to bottom, rgba(5, 6, 8, 0.98), rgba(5, 6, 8, 0.92));
  border-bottom: 1px solid var(--color-border-subtle);
}

.gh-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-3);
}

.gh-header__brand {
  display: flex;
  align-items: center;
  min-width: 0;
}

.gh-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
}

.gh-header__logo-mark {
  width: 34px;
  height: 34px;
  border-radius: 6px;
  background:
    radial-gradient(circle at 18% 0%, rgba(215, 38, 56, 0.9), transparent 55%),
    radial-gradient(circle at 82% 100%, rgba(56, 182, 255, 0.7), transparent 55%),
    linear-gradient(135deg, #111318, #050608 60%);
  box-shadow: var(--shadow-glow-red);
  position: relative;
  overflow: hidden;
}

.gh-header__logo-mark::after {
  content: "III";
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 0.95rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #ffe9e9;
}

.gh-header__title-group {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.gh-header__site-name {
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.gh-header__tagline {
  font-family: var(--font-sans);
  font-size: var(--font-size-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

/* Navigation */

.gh-header__nav {
  margin-left: auto;
}

.gh-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.gh-header__nav-item {
  position: relative;
}

.gh-header__nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding-block: 0.25rem;
  font-family: var(--font-sans);
  font-size: var(--font-size-sm);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-gray-100);
}

.gh-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.3rem;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent-neon-blue));
  transition: width var(--transition-normal);
}

.gh-header__nav-link:hover::after,
.gh-header__nav-link:focus-visible::after {
  width: 100%;
}

.gh-header__nav-item--cta .gh-header__nav-link {
  padding-inline: 0.9rem;
  padding-block: 0.45rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: linear-gradient(135deg, #d72638, #ff3155);
  box-shadow: var(--shadow-soft), var(--shadow-glow-red);
  font-family: var(--font-display);
  color: #fff;
}

.gh-header__nav-item--cta .gh-header__nav-link::after {
  display: none;
}

.gh-header__nav-item--cta .gh-header__nav-link:hover {
  background: linear-gradient(135deg, #ff3155, #ff596e);
}

/* Mobile toggle */

.gh-header__toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 4px;
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: 1px solid var(--color-border-subtle);
  color: var(--color-gray-50);
}

.gh-header__toggle-bar {
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background-color: var(--color-gray-100);
  transition: transform var(--transition-normal), opacity var(--transition-fast), background-color var(--transition-normal);
}

.gh-header__toggle[aria-expanded="true"] .gh-header__toggle-bar:nth-child(1) {
  transform: translateY(4px) rotate(45deg);
}

.gh-header__toggle[aria-expanded="true"] .gh-header__toggle-bar:nth-child(2) {
  opacity: 0;
}

.gh-header__toggle[aria-expanded="true"] .gh-header__toggle-bar:nth-child(3) {
  transform: translateY(-4px) rotate(-45deg);
}

/* Layout: mobile first */

.gh-header__nav {
  position: fixed;
  inset-inline: 0;
  top: 56px;
  background: radial-gradient(circle at top, rgba(215, 38, 56, 0.24), transparent 60%), #050608;
  border-bottom: 1px solid var(--color-border-subtle);
  transform: translateY(-120%);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), transform var(--transition-normal), visibility var(--transition-fast);
}

.gh-header__nav-list {
  flex-direction: column;
  align-items: flex-start;
  padding: var(--space-4);
}

.gh-header__nav-link {
  font-size: var(--font-size-md);
}

.gh-header__nav--open {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

/* Desktop */

@media (min-width: 768px) {
  .gh-header__inner {
    padding-block: var(--space-4);
  }

  .gh-header__toggle {
    display: none;
  }

  .gh-header__nav {
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    background: transparent;
    border-bottom: none;
  }

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

  .gh-header__nav-link {
    font-size: var(--font-size-sm);
  }
}

@media (max-width: 480px) {
  .gh-header__tagline {
    display: none;
  }
}