/* ==========================================================================
   Layout: Header, Navigation, Burger-Drawer, Footer
   ========================================================================== */

.site-header{
  position: sticky;
  top: 0;
  z-index: 500;
  background: var(--ink);
  color: var(--paper);
  transition: padding var(--dur-med) var(--ease-out), box-shadow var(--dur-med) var(--ease-out);
}

.site-header__bar{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding-block: 1.5rem;
  transition: padding var(--dur-med) var(--ease-out);
}

.site-header.is-condensed{
  box-shadow: 0 8px 24px oklch(0% 0 0 / 0.28);
}
.site-header.is-condensed .site-header__bar{
  padding-block: 0.85rem;
}
.site-header.is-condensed .site-logo__sub{
  max-height: 0;
  opacity: 0;
  margin-top: 0;
}

.site-logo{
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: var(--paper);
  line-height: 1.2;
  flex: 0 0 auto;
}
.site-logo__mark{
  font-family: var(--font-display);
  font-size: var(--step-2);
  font-weight: 500;
  letter-spacing: 0.01em;
}
.site-logo__sub{
  font-family: var(--font-body);
  font-size: var(--step--2);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--brass);
  margin-top: 0.3em;
  max-height: 2em;
  opacity: 1;
  overflow: hidden;
  transition: all var(--dur-med) var(--ease-out);
}

.site-nav{ flex: 1 1 auto; }
.site-nav ul{
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: clamp(1.5rem, 2.5vw, 2.75rem);
  margin: 0;
  padding: 0;
}
.site-nav li{ position: relative; }
.site-nav a{
  display: inline-block;
  text-decoration: none;
  color: var(--paper);
  font-size: var(--step--1);
  letter-spacing: 0.03em;
  padding: 0.4em 0.1em;
  position: relative;
}
.site-nav a::after{
  content: "";
  position: absolute;
  left: 0; right: 100%;
  bottom: 0.1em;
  height: 1px;
  background: var(--brass);
  transition: right var(--dur-med) var(--ease-out);
}
.site-nav a:hover::after,
.site-nav a:focus-visible::after,
.site-nav li.current-menu-item > a::after,
.site-nav li.current_page_item > a::after{ right: 0; }

.site-nav .sub-menu{
  list-style: none;
  position: absolute;
  top: 100%; left: 0;
  min-width: 240px;
  background: var(--ink);
  border: 1px solid oklch(100% 0 0 / 0.12);
  padding: 0.5rem 0;
  margin: 0.6rem 0 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  transition: opacity var(--dur-med) var(--ease-out), transform var(--dur-med) var(--ease-out), visibility var(--dur-med);
}
.site-nav li:hover > .sub-menu,
.site-nav li:focus-within > .sub-menu{
  opacity: 1; visibility: visible; transform: translateY(0);
}
.site-nav .sub-menu a{ display: block; padding: 0.6em 1.25em; font-size: var(--step--1); }
.site-nav .sub-menu a::after{ display: none; }
.site-nav .sub-menu a:hover{ background: oklch(100% 0 0 / 0.06); }

.burger{
  display: none;
  width: 44px; height: 44px;
  flex: 0 0 auto;
  border: 1px solid oklch(100% 0 0 / 0.3);
  border-radius: var(--radius);
  background: transparent;
  cursor: pointer;
  position: relative;
}
.burger span,
.burger::before,
.burger::after{
  content: "";
  position: absolute;
  left: 11px; right: 11px;
  height: 1px;
  background: var(--paper);
  transition: transform var(--dur-med) var(--ease-out), opacity var(--dur-fast) var(--ease-out), top var(--dur-med) var(--ease-out);
}
.burger::before{ top: 14px; }
.burger span{ top: 21px; }
.burger::after{ top: 28px; }
.burger[aria-expanded="true"] span{ background: transparent; }
.burger[aria-expanded="true"]::before{ top: 21px; transform: rotate(45deg); }
.burger[aria-expanded="true"]::after{ top: 21px; transform: rotate(-45deg); }

.mobile-drawer{
  position: fixed;
  inset: 0;
  z-index: 490;
  background: var(--ink);
  color: var(--paper);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(2rem, 8vw, 4rem);
  transform: translateY(-100%);
  transition: transform var(--dur-med) var(--ease-out);
  visibility: hidden;
}
.mobile-drawer.is-open{
  transform: translateY(0);
  visibility: visible;
}
.mobile-drawer ul{
  list-style: none;
  margin: 0; padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.mobile-drawer .sub-menu{ list-style: none; padding: 0.2rem 0 0.6rem 1.25rem; margin: 0; }
.mobile-drawer .sub-menu a{ font-size: var(--step-0); }
.mobile-drawer a{
  display: block;
  text-decoration: none;
  color: var(--paper);
  font-family: var(--font-display);
  font-size: var(--step-2);
  padding: 0.5rem 0;
  min-height: 44px;
}
.mobile-drawer .drawer-meta{
  margin-top: var(--space-md);
  font-family: var(--font-body);
  font-size: var(--step--1);
  color: var(--paper-line, oklch(85% 0.02 75));
}
.mobile-drawer .drawer-meta a{ font-family: var(--font-body); font-size: inherit; display: inline; color: var(--brass); }

body.drawer-open{ overflow: hidden; }

@media (max-width: 1200px){
  .site-nav ul{ gap: 1.25rem; }
}

@media (max-width: 900px){
  .site-nav{ display: none; }
  .burger{ display: block; }
  .site-header__bar{ padding-block: 1.1rem; }
}

/* ---- Footer ---- */
.site-footer{
  background: var(--ink);
  color: var(--paper);
  padding-block: var(--space-lg) var(--space-sm);
  margin-top: var(--space-2xl);
}
.footer-grid{
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: clamp(1.5rem, 3vw, 3rem);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid oklch(100% 0 0 / 0.12);
}
.footer-brand{ grid-column: 1 / span 5; }
.footer-brand .site-logo{ color: var(--paper); }
.footer-brand p{ color: oklch(85% 0.02 75); margin-top: 1.2rem; max-width: 36ch; }
.footer-col{ grid-column: span 3; }
.footer-col h4{
  font-family: var(--font-body);
  font-size: var(--step--1);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--brass);
  margin-bottom: 1.1rem;
  font-weight: 600;
}
.footer-col ul{ list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0.6rem; }
.footer-col a{ text-decoration: none; color: var(--paper); }
.footer-col a:hover{ color: var(--brass); }
.footer-contact li{
  display: flex; align-items: center; gap: 0.6rem;
  color: oklch(85% 0.02 75);
}
.footer-contact .icon{ color: var(--brass); width: 1.15em; height: 1.15em; }
.footer-bottom{
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding-top: var(--space-sm);
  font-size: var(--step--1);
  color: oklch(70% 0.02 75);
}
.footer-bottom a{ text-decoration: none; }
.footer-bottom a:hover{ color: var(--brass); }
.footer-bottom ul{ list-style: none; display: flex; gap: 1.5rem; margin: 0; padding: 0; flex-wrap: wrap; }

@media (max-width: 900px){
  .footer-brand{ grid-column: 1 / -1; }
  .footer-col{ grid-column: span 6; }
}
@media (max-width: 600px){
  .footer-col{ grid-column: 1 / -1; }
}