/* === Header === */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 247, 242, 0.92);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), background var(--transition);
}
.site-header.is-scrolled {
  border-bottom-color: var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding: 18px 0;
}

.logo {
  display: inline-flex;
  align-items: baseline;
  gap: 4px;
  text-decoration: none;
  color: var(--text);
  font-family: var(--serif);
  font-size: 26px;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1;
}
.logo:hover { color: var(--brand); text-decoration: none; }
.logo__amp {
  color: var(--accent-deep);
  font-style: italic;
  font-weight: 400;
  margin: 0 2px;
}
.logo__sub {
  display: block;
  font-family: var(--sans);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-light);
  margin-top: 4px;
}

.nav { display: none; }
.nav__list {
  display: flex;
  gap: 28px;
  list-style: none;
  margin: 0; padding: 0;
}
.nav__list a {
  font-family: var(--sans);
  font-size: 15px;
  color: var(--text);
  text-decoration: none;
  padding: 8px 0;
  position: relative;
}
.nav__list a:hover { color: var(--brand); }
.nav__list a.is-active {
  color: var(--brand);
}
.nav__list a.is-active::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 1px;
  background: var(--accent);
}
.header-cta { display: none; align-items: center; gap: 16px; }
.header-cta__phone {
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  text-decoration: none;
  white-space: nowrap;
}
.header-cta__phone:hover { color: var(--brand); }

.burger {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
}
.burger span {
  display: block;
  width: 22px;
  height: 1px;
  background: var(--text);
  transition: transform var(--transition), opacity var(--transition);
}
.burger.is-open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.burger.is-open span:nth-child(2) { opacity: 0; }
.burger.is-open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.mobile-menu {
  position: fixed;
  inset: 64px 0 0;
  background: var(--bg);
  z-index: 99;
  padding: 32px 24px;
  transform: translateX(100%);
  transition: transform var(--transition);
  overflow-y: auto;
}
.mobile-menu.is-open { transform: translateX(0); }
.mobile-menu ul { list-style: none; padding: 0; margin: 0 0 32px; }
.mobile-menu li { margin: 0; border-bottom: 1px solid var(--border); }
.mobile-menu a {
  display: block;
  padding: 18px 0;
  font-family: var(--serif);
  font-size: 22px;
  color: var(--text);
  text-decoration: none;
}
.mobile-menu .mobile-contacts {
  margin-top: 32px;
  font-size: 15px;
  line-height: 1.8;
}
.mobile-menu .mobile-contacts a { font-family: var(--sans); font-size: 15px; padding: 0; }

@media (min-width: 1024px) {
  .nav { display: block; }
  .header-cta { display: inline-flex; }
  .burger { display: none; }
  .mobile-menu { display: none; }
}