/* Header / nav */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  width: 100%;
  background-color: rgba(13, 13, 13, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.header.header-scrolled {
  background-color: var(--bg-dark);
  border-bottom-color: var(--border-color);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-logo {
  height: 36px;
  width: auto;
}

.brand-text {
  display: none;
  /* Simplification, logo is now key */
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding-block: 8px;
  position: relative;
  transition: color 0.2s ease;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  bottom: 0;
  width: 0;
  height: 1px;
  background-color: var(--primary);
  transition: width 0.25s ease;
}

.nav-link:hover {
  color: var(--text-light);
}

.nav-link:hover::after,
.nav-link.is-active::after {
  width: 100%;
}

.nav-link.is-active {
  color: var(--text-light);
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.mobile-toggle {
  display: none;
  /* JavaScript functionality for mobile menu is pending */
}


/* Breadcrumbs */
.breadcrumb-nav {
  margin-bottom: 24px;
}

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 13px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.breadcrumb-item+.breadcrumb-item::before {
  content: "/";
  padding: 0 12px;
  color: var(--border-subtle);
  font-weight: 300;
}

.breadcrumb-item a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.breadcrumb-item a:hover {
  color: var(--primary);
}

.breadcrumb-item.active {
  color: var(--text-light);
}


/* Responsive */

@media (max-width: 960px) {
  .nav-links {
    gap: 14px;
  }
}

@media (max-width: 720px) {
  .nav-links {
    display: flex;
    flex-direction: column;
    gap: 30px;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: var(--primary);
    padding: 100px 20px 20px;
    align-items: center;
    justify-content: center;
    transform: translateX(100%);
    transition: transform 0.3s ease-in-out;
    z-index: 99;
  }

  .nav-link {
    font-size: 24px;
    color: var(--text-light);
  }

  .nav-cta {
    display: none;
  }

  .header.nav-open .nav-links {
    transform: translateX(0);
  }

  .mobile-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 999px;
    border: 1px solid var(--border-subtle);
    background: rgba(9, 11, 18, 0.96);
    cursor: pointer;
    z-index: 100;
    color: var(--text-light);
    position: relative;
    /* Ensure z-index works */
  }

  .footer {
    margin-top: 24px;
  }
}