/* assets/css/header.css */

.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  backdrop-filter: blur(18px);
  background: #111111;
  border-bottom: 1px solid rgba(17, 32, 24, 0.06);
}

.header-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 5rem;
}

.brand {
  flex-shrink: 0;
}

.brand img {
  width: auto;
  max-height: 56px;
}

.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.34rem;
  width: 3rem;
  height: 3rem;
  border: 1px solid rgba(17, 32, 24, 0.12);
  border-radius: 50%;
  background: #ffffffeb;
  box-shadow: 0 10px 24px rgba(17, 32, 24, 0.06);
}

.nav-toggle span {
  width: 1.15rem;
  height: 2px;
  margin-inline: auto;
  background: var(--color-dark);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.primary-nav {
  position: fixed;
  top: 5.4rem;
  left: 0.75rem;
  right: 0.75rem;
  padding: 1rem;
  border-radius: var(--radius-xl);
  background: #111;
  border: 1px solid rgba(17, 32, 24, 0.08);
  box-shadow: var(--shadow-soft);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition:
    opacity var(--transition-base),
    visibility var(--transition-base),
    transform var(--transition-base);
}

.primary-nav.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.primary-nav ul {
  display: grid;
  gap: 0.35rem;
}

.primary-nav li a {
  display: block;
  padding: 0.9rem 0.85rem;
  border-radius: 0.9rem;
  font-weight: 700;
  color: var(--color-dark);
  color: white;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.primary-nav li a:hover,
.primary-nav li a:focus-visible {
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
}

.nav-cta-group {
  display: grid;
  gap: 0.75rem;
  margin-top: 1rem;
}

@media (min-width: 1100px) {
  .header-shell {
    min-height: 5.5rem;
  }

  .nav-toggle {
    display: none;
  }

  .primary-nav {
    position: static;
    inset: auto;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .primary-nav ul {
    display: flex;
    align-items: center;
    gap: 0.25rem;
  }

  .primary-nav li a {
    padding: 0.75rem 0.95rem;
  }

  .nav-cta-group {
    display: flex;
    align-items: center;
    margin-top: 0;
  }
}