/**
 * Layout primitives: wrap, grid, sections, chrome.
 */

.wrap {
  width: min(var(--mf-wrap), calc(100% - (var(--mf-gutter) * 2)));
  margin-inline: auto;
}

.wrap--narrow {
  width: min(var(--mf-wrap-narrow), calc(100% - (var(--mf-gutter) * 2)));
}

.wrap--wide {
  width: min(var(--mf-wrap-wide), calc(100% - (var(--mf-gutter) * 2)));
}

/* Editorial grid */
.mf-grid {
  display: grid;
  gap: var(--mf-grid-gap);
}

.mf-grid--2 {
  grid-template-columns: 1fr;
}

.mf-grid--3 {
  grid-template-columns: 1fr;
}

.mf-grid--4 {
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .mf-grid--2 {
    grid-template-columns: repeat(2, 1fr);
  }

  .mf-grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 960px) {
  .mf-grid--3 {
    grid-template-columns: repeat(3, 1fr);
  }

  .mf-grid--4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Vertical rhythm — base + dense/airy variants */
.section {
  position: relative;
  padding: var(--mf-space-8) 0;
}

.section--tight,
.section--dense {
  padding: var(--mf-space-dense) 0;
}

.section--airy {
  padding: var(--mf-space-airy) 0;
}

.section--flush {
  padding: 0;
}

.stack {
  display: grid;
  gap: var(--mf-space-4);
}

.stack--lg {
  gap: var(--mf-space-6);
}

.cluster {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  border-bottom: 1px solid var(--mf-border);
  background: rgba(11, 11, 11, 0.92);
  transition:
    background var(--mf-duration) var(--mf-ease),
    border-color var(--mf-duration) var(--mf-ease),
    backdrop-filter var(--mf-duration) var(--mf-ease);
}

.site-header.is-scrolled {
  background: rgba(11, 11, 11, 0.72);
  border-color: var(--mf-border-soft);
  backdrop-filter: blur(14px) saturate(1.2);
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
}

@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .site-header.is-scrolled {
    background: rgba(11, 11, 11, 0.96);
  }
}

.site-header__bar {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  min-height: var(--mf-header-h);
}

.site-logo {
  position: relative;
  font-weight: 700;
  font-size: 1.08rem;
  letter-spacing: -0.045em;
  flex-shrink: 0;
}

.site-logo::before {
  content: "";
  display: inline-block;
  width: 0.42rem;
  height: 0.42rem;
  margin-right: 0.55rem;
  margin-bottom: 0.08em;
  vertical-align: middle;
  background: var(--mf-accent);
  border-radius: 1px;
}

.site-nav__list a {
  position: relative;
}

.site-nav__list a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0.55rem;
  height: 1px;
  background: var(--mf-ink);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--mf-duration) var(--mf-ease);
}

.site-nav__list a:hover::after,
.site-nav__list .current-menu-item > a::after,
.site-nav__list .current_page_item > a::after {
  transform: scaleX(1);
}

.site-nav {
  display: none;
  margin-left: auto;
}

.site-nav__list {
  display: flex;
  flex-wrap: wrap;
  gap: 1.35rem;
  font-size: var(--mf-text-sm);
  color: var(--mf-muted);
}

.site-nav__list a:hover {
  color: var(--mf-ink);
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-left: auto;
}

.site-search-link {
  display: none;
  font-size: var(--mf-text-sm);
  color: var(--mf-muted);
}

.nav-toggle {
  min-height: 44px;
  min-width: 44px;
  padding: 0 0.4rem;
  color: var(--mf-muted);
}

.mobile-nav {
  border-top: 1px solid var(--mf-border);
  padding: 1.25rem 1.25rem 1.75rem;
  background: var(--mf-surface-alt);
}

.mobile-nav[hidden] {
  display: none;
}

.mobile-nav__list {
  display: grid;
  gap: 0.85rem;
  font-size: 1.15rem;
}

.mobile-nav__search {
  display: block;
  margin-top: 1.5rem;
  padding: 0.85rem 0;
  border-top: 1px solid var(--mf-border);
  color: var(--mf-muted);
  font-size: 0.95rem;
}

/* Main */
.site-main {
  position: relative;
  min-height: 50svh;
  z-index: 1;
}

.page-shell {
  padding: var(--mf-space-8) 0;
}

.page-shell h1 {
  font-size: var(--mf-text-3xl);
  max-width: 16ch;
}

.page-shell--404 .mf-label {
  margin-bottom: 1rem;
  color: var(--mf-accent);
}

.page-shell--404 h1 {
  max-width: 14ch;
  margin-bottom: 0.25rem;
}

.page-shell--404 .mf-lede {
  margin-top: 1.25rem;
}

.page-shell__actions {
  margin-top: 2rem;
}

.page-shell .entry-content,
.page-shell .archive-list {
  margin-top: 1.5rem;
  color: var(--mf-muted);
  max-width: 42rem;
}

/* Hero shell — full viewport composition, fade into page */
.hero {
  position: relative;
  isolation: isolate;
  min-height: calc(100svh - var(--mf-header-h));
  display: grid;
  align-items: end;
  padding: 5rem 0 4.5rem;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: min(28vh, 12rem);
  z-index: 0;
  pointer-events: none;
  background: linear-gradient(180deg, transparent, var(--mf-canvas));
}

.hero > * {
  position: relative;
  z-index: 1;
}

.hero .mf-grid-bg {
  z-index: 0;
}

.hero[data-ambient]::before {
  z-index: 0;
}

.hero__inner {
  position: relative;
  z-index: 1;
  width: min(var(--mf-wrap), calc(100% - (var(--mf-gutter) * 2)));
  margin-inline: auto;
  padding-bottom: 0.5rem;
}

@media (max-width: 899px) {
  .hero {
    min-height: auto;
    padding: 5.5rem 0 3.5rem;
  }

  .hero::after {
    height: 5rem;
  }

  .mf-grid-bg {
    opacity: 0.45;
  }
}

.hero h1,
.hero .mf-display {
  max-width: 11ch;
}

.hero .mf-label,
.hero__brand {
  margin-bottom: 1.15rem;
  font-size: 0.8125rem;
  color: var(--mf-ink);
  letter-spacing: 0.14em;
}

.hero .mf-lede {
  margin-top: 1.5rem;
  max-width: 32rem;
}

.hero .cluster {
  margin-top: 2.15rem;
}

/* Footer */
.site-footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--mf-border);
  padding: 4.25rem 0 2.25rem;
  background: var(--mf-surface);
}

.site-footer__grid {
  display: grid;
  gap: 2.75rem;
}

.site-footer__brand .site-logo {
  font-size: 1.15rem;
}

.site-footer__brand p {
  margin-top: 1rem;
  color: var(--mf-muted);
  max-width: 17rem;
  font-size: 0.95rem;
  line-height: 1.6;
}

.site-footer__col h2 {
  margin-bottom: 1rem;
  font-size: var(--mf-text-xs);
  font-weight: 600;
  letter-spacing: var(--mf-tracking-label);
  text-transform: uppercase;
  color: var(--mf-faint);
}

.site-footer__list {
  display: grid;
  gap: 0.55rem;
  font-size: 0.95rem;
}

.site-footer__list a {
  color: var(--mf-ink);
}

.site-footer__list a:hover {
  color: var(--mf-muted);
}

.search-form {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.5rem;
}

.search-form input[type="search"] {
  min-width: min(100%, 16rem);
  flex: 1;
}

.search-form button {
  min-height: 44px;
  padding: 0 1rem;
  border: 1px solid var(--mf-border);
  border-radius: var(--mf-radius);
  font-weight: 600;
  background: var(--mf-ink);
  color: var(--mf-canvas);
}

.site-footer__legal {
  margin-top: 2.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--mf-border);
  font-size: 0.85rem;
  color: var(--mf-muted);
}

/* No-JS / desktop nav */
html:not(.js) .nav-toggle {
  display: none;
}

html:not(.js) .mobile-nav {
  display: none;
}

html:not(.js) .site-nav {
  display: block;
  margin-left: auto;
}

html:not(.js) .site-nav__list {
  justify-content: flex-end;
}

@media (min-width: 900px) {
  .site-nav,
  .site-search-link,
  .site-cta {
    display: flex;
  }

  .nav-toggle,
  .mobile-nav {
    display: none;
  }

  .site-header__actions {
    margin-left: 1.5rem;
  }

  .site-footer__grid {
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
  }
}