.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--header-bg);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-soft);
}

.header-wrapper {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  color: var(--bg-main);
  background: var(--primary);
  font-weight: 900;
  box-shadow: var(--shadow-soft);
}

.brand-text {
  display: grid;
  line-height: 1.3;
}

.brand-text strong {
  font-size: 1.05rem;
}

.brand-text span {
  font-size: 0.8rem;
  color: var(--text-muted);
  direction: ltr;
  text-align: right;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-link {
  padding: 10px 14px;
  border-radius: var(--radius-pill);
  color: var(--text-muted);
  font-weight: 700;
  transition:
    color var(--transition),
    background var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-main);
  background: var(--bg-card);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.site-main {
  min-height: calc(100vh - 160px);
}

.site-main.is-loading {
  opacity: 0.72;
}

.site-footer {
  border-top: 1px solid var(--border-soft);
  background: var(--bg-section);
}

.footer-wrapper {
  min-height: 86px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  color: var(--text-muted);
  font-size: 0.95rem;
}

@media (max-width: 860px) {
  .main-nav {
    position: fixed;
    top: 78px;
    inset-inline: 16px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-soft);
    border-radius: 24px;
    box-shadow: var(--shadow-soft);
  }

  .main-nav.is-open {
    display: flex;
  }

  .nav-link {
    padding: 12px 14px;
  }

  .footer-wrapper {
    flex-direction: column;
    justify-content: center;
    text-align: center;
  }
}