/* ============================================================
   Puschkin — shared site chrome (header + footer)
   Single source of truth for nav, mobile menu and footer.
   Markup is injected by site-chrome.js into #site-header / #site-footer.
   Selectors are scoped under those IDs so they win over any
   leftover per-page chrome rules (id specificity).
   Relies on each page's :root design tokens (--navy, --ice, …).
   ============================================================ */

/* ───── NAV ───── */
#site-header .nav {
  position: sticky; top: 0; z-index: 1010;
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 40px;
  background: rgba(246, 247, 250, 0.78);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--rule);
}
#site-header .logo {
  display: inline-flex; align-items: center;
  height: 52px;
  transition: opacity .2s;
}
#site-header .logo:hover { opacity: 0.78; }
#site-header .logo img { height: 100%; width: auto; display: block; }

#site-header .nav-links { display: flex; gap: 36px; }
#site-header .nav-links a {
  position: relative;
  font-size: 13px; font-weight: 500;
  color: var(--navy); opacity: 0.78;
  transition: opacity .2s;
}
#site-header .nav-links a:hover { opacity: 1; }
#site-header .nav-links a.active { opacity: 1; }
#site-header .nav-links a.active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -22px;
  height: 2px; background: var(--navy);
}

/* desktop socials + shop */
#site-header .nav-socials { display: inline-flex; align-items: center; gap: 6px; }
#site-header .nav-social {
  width: 38px; height: 38px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 999px;
  color: var(--navy);
  background: transparent;
  border: 1px solid var(--rule-strong);
  transition: background .2s ease, color .2s ease, transform .2s ease, border-color .2s ease;
}
#site-header .nav-social svg { width: 16px; height: 16px; display: block; }
#site-header .nav-social:hover {
  background: var(--navy); color: var(--ice);
  border-color: var(--navy); transform: translateY(-1px);
}

/* ───── BURGER (mobile only) ───── */
#site-header .nav-burger {
  display: none;
  width: 44px; height: 44px;
  align-items: center; justify-content: center;
  background: transparent;
  border: 1px solid var(--rule-strong);
  border-radius: 999px;
  color: var(--navy);
  cursor: pointer; padding: 0;
  transition: background .25s ease, border-color .25s ease, color .25s ease;
  -webkit-tap-highlight-color: transparent;
}
#site-header .nav-burger .burger-bars { position: relative; width: 18px; height: 12px; display: block; }
#site-header .nav-burger .burger-bars span {
  position: absolute; left: 0; right: 0;
  height: 1.5px; background: currentColor; border-radius: 2px;
  transition: transform .35s cubic-bezier(.65,.05,.36,1), top .25s ease .1s;
}
#site-header .nav-burger .burger-bars span:nth-child(1) { top: 2px; }
#site-header .nav-burger .burger-bars span:nth-child(2) { top: 9px; }
#site-header .nav-burger:hover,
#site-header .nav-burger.is-open { background: var(--navy); color: var(--ice); border-color: var(--navy); }
#site-header .nav-burger.is-open .burger-bars span { transition: transform .35s cubic-bezier(.65,.05,.36,1) .05s, top .2s ease; }
#site-header .nav-burger.is-open .burger-bars span:nth-child(1) { top: 5.5px; transform: rotate(45deg); }
#site-header .nav-burger.is-open .burger-bars span:nth-child(2) { top: 5.5px; transform: rotate(-45deg); }

/* ───── MOBILE MENU OVERLAY ───── */
#site-header .mobile-menu {
  position: fixed; inset: 0; z-index: 1000;
  background: var(--ice); color: var(--navy);
  display: flex; flex-direction: column;
  pointer-events: none; opacity: 0;
  transition: opacity .35s ease;
}
#site-header .mobile-menu.is-open { pointer-events: auto; opacity: 1; }
body.mm-open { overflow: hidden; }

#site-header .mm-inner {
  flex: 1; display: flex; flex-direction: column;
  padding: 96px 28px 32px; max-width: 720px; width: 100%; margin: 0 auto;
}
#site-header .mm-links {
  list-style: none; margin: 0; padding: 0;
  display: flex; flex-direction: column; gap: 4px; flex: 1;
}
#site-header .mm-links li {
  border-bottom: 1px solid var(--rule); overflow: hidden;
  transform: translateY(20px); opacity: 0;
  transition: transform .55s cubic-bezier(.2,.7,.2,1), opacity .55s cubic-bezier(.2,.7,.2,1);
}
#site-header .mobile-menu.is-open .mm-links li { transform: translateY(0); opacity: 1; }
#site-header .mobile-menu.is-open .mm-links li:nth-child(1) { transition-delay: .14s; }
#site-header .mobile-menu.is-open .mm-links li:nth-child(2) { transition-delay: .19s; }
#site-header .mobile-menu.is-open .mm-links li:nth-child(3) { transition-delay: .24s; }
#site-header .mobile-menu.is-open .mm-links li:nth-child(4) { transition-delay: .29s; }
#site-header .mobile-menu.is-open .mm-links li:nth-child(5) { transition-delay: .34s; }
#site-header .mobile-menu.is-open .mm-links li:nth-child(6) { transition-delay: .39s; }
#site-header .mm-links a {
  display: flex; align-items: baseline; gap: 16px;
  padding: 18px 4px; color: var(--navy);
  font-family: 'AmsiProCondensed', 'Helvetica Neue', sans-serif;
  font-weight: 500; font-size: 34px; letter-spacing: -0.01em; line-height: 1;
  transition: color .2s, transform .25s;
}
#site-header .mm-links a:hover { color: var(--navy-deep); transform: translateX(4px); }
#site-header .mm-links a.active .mm-label { text-decoration: underline; text-underline-offset: 6px; }
#site-header .mm-links .mm-num {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 10px; letter-spacing: 0.2em; color: var(--navy);
  opacity: 0.45; font-weight: 500; min-width: 22px;
}
#site-header .mm-links .mm-label { font-style: italic; }
#site-header .mm-foot {
  margin-top: 36px; padding-top: 28px;
  opacity: 0; transform: translateY(14px);
  transition: opacity .5s ease .55s, transform .5s ease .55s;
}
#site-header .mobile-menu.is-open .mm-foot { opacity: 1; transform: translateY(0); }
#site-header .mm-foot-label {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 10px; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--navy); opacity: 0.5; margin-bottom: 14px;
}
#site-header .mm-socials { display: flex; gap: 10px; flex-wrap: wrap; }
#site-header .mm-social {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 11px 18px 11px 14px; border-radius: 999px;
  border: 1px solid var(--rule-strong); color: var(--navy);
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; font-weight: 500;
  transition: background .2s, color .2s, border-color .2s, transform .2s;
}
#site-header .mm-social svg { width: 16px; height: 16px; }
#site-header .mm-social:hover {
  background: var(--navy); color: var(--ice);
  border-color: var(--navy); transform: translateY(-1px);
}

/* ───── FOOTER ───── */
#site-footer footer {
  background: var(--navy); color: var(--ice);
  padding: 80px 40px 32px; margin-top: 0;
}
#site-footer .footer-grid {
  display: grid; grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 60px; padding-bottom: 60px;
  border-bottom: 1px solid rgba(238, 242, 247, 0.18);
}
#site-footer .footer-brand .logo { height: 96px; margin-bottom: 22px; }
#site-footer .footer-brand .logo.bear-mark { height: 132px; }
#site-footer .footer-brand .logo img { height: 100%; width: auto; display: block; filter: brightness(0) invert(1); }
#site-footer .footer-brand .tag {
  font-family: 'AmsiProCondensed', 'Helvetica Neue', sans-serif;
  font-style: italic; font-size: 22px; line-height: 1.3;
  color: var(--ice-3); max-width: 320px;
}
#site-footer .footer-col h4 {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 11px; letter-spacing: 0.22em; text-transform: uppercase;
  color: rgba(238, 242, 247, 0.55); margin-bottom: 18px; font-weight: 500;
}
#site-footer .footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; margin: 0; padding: 0; }
#site-footer .footer-col a { color: var(--ice); font-size: 14px; opacity: 0.85; transition: opacity .2s; }
#site-footer .footer-col a:hover { opacity: 1; }
#site-footer .footer-bottom {
  padding-top: 30px;
  display: flex; justify-content: space-between; align-items: center;
  font-size: 12px; color: rgba(238, 242, 247, 0.55); letter-spacing: 0.05em;
}
#site-footer .footer-bottom .disclaim {
  font-family: 'AmsiProCondensed', 'Helvetica Neue', sans-serif;
  font-style: italic; font-size: 14px; letter-spacing: 0; color: var(--ice-3);
}

/* ───── RESPONSIVE ───── */
@media (max-width: 1100px) {
  #site-header .nav { padding: 16px 22px; }
  #site-header .nav-links,
  #site-header .nav-socials { display: none; }
  #site-header .nav-burger { display: inline-flex; }
  #site-footer footer { padding: 64px 22px 30px; }
  #site-footer .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
}
@media (max-width: 640px) {
  #site-header .nav { padding: 14px 18px; }
  #site-header .logo { height: 40px; }
  #site-header .mm-links a { font-size: 28px; }
  #site-footer footer { padding: 56px 18px 28px; }
  #site-footer .footer-grid { grid-template-columns: 1fr; gap: 38px; padding-bottom: 42px; }
  #site-footer .footer-brand .logo.bear-mark { height: 104px; }
  #site-footer .footer-brand .tag { font-size: 18px; }
  #site-footer .footer-bottom { flex-direction: column; gap: 14px; text-align: center; }
}