.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  padding-top: 1rem;
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.8rem 1rem;
  min-height: var(--header-h);
  background: rgba(11, 12, 18, 0.72);
  border: 1px solid var(--panel-border);
  backdrop-filter: blur(14px);
  border-radius: 999px;
  box-shadow: var(--shadow-soft);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  min-width: 0;
}

.brand__logo {
  width: 40px;
  height: 40px;
  object-fit: contain;
  border-radius: 10px;
}

.brand__text {
  font-weight: 700;
  letter-spacing: -0.03em;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.nav-toggle {
  display: none;
}

.site-footer {
  padding: 2.5rem 0 3rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr auto;
  gap: 2rem;
  align-items: start;
}

.footer__links,
.footer__meta {
  display: grid;
  gap: 0.75rem;
}

.footer__copy {
  max-width: 360px;
  margin-top: 0.9rem;
}

.footer__meta {
  text-align: right;
}

@media (max-width: 920px) {
  .nav-toggle {
    width: 48px;
    height: 48px;
    display: inline-grid;
    place-items: center;
    border-radius: 50%;
    border: 1px solid var(--panel-border);
    background: rgba(255, 255, 255, 0.02);
  }

  .nav-toggle span {
    display: block;
    width: 18px;
    height: 2px;
    background: var(--white);
    margin: 2px 0;
    transition: transform var(--transition), opacity var(--transition);
  }

  .nav-menu {
    position: absolute;
    top: calc(100% + 0.75rem);
    left: 1rem;
    right: 1rem;
    display: grid;
    gap: 0.5rem;
    padding: 1rem;
    border-radius: 24px;
    background: rgba(12, 13, 21, 0.96);
    border: 1px solid var(--panel-border);
    box-shadow: var(--shadow);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px);
    transition: opacity var(--transition), transform var(--transition);
  }

  .nav-open .nav-menu {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .nav-open .nav-toggle span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }

  .nav-open .nav-toggle span:nth-child(2) {
    opacity: 0;
  }

  .nav-open .nav-toggle span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }

  .footer__grid {
    grid-template-columns: 1fr;
  }

  .footer__meta {
    text-align: left;
  }
}