/* Never show page-local legacy shell markup before the canonical shared shell mounts. */
.site-header:not([data-site-shell="shared"]),
.site-footer:not([data-site-shell="shared"]) {
  visibility: hidden;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: var(--header-z);
  height: var(--header-height);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: clamp(1rem, 2vw, 2rem);
  padding-inline: clamp(1rem, 2.3vw, 2.25rem);
  border-bottom: 1px solid transparent;
  transition: background var(--transition-medium), border-color var(--transition-medium), backdrop-filter var(--transition-medium);
}
.site-header.is-scrolled,
.site-header.menu-active {
  background: rgba(7, 7, 8, 0.84);
  border-color: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(20px) saturate(130%);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  width: fit-content;
  min-width: 0;
}
.brand-mark {
  position: relative;
  flex: 0 0 2.65rem;
  width: 2.65rem;
  height: 1.75rem;
}
.brand-disc {
  position: absolute;
  top: 0.05rem;
  right: 0;
  width: 1.62rem;
  height: 1.62rem;
  border: 2px solid currentColor;
  border-radius: 50%;
}
.brand-disc::after {
  content: "";
  position: absolute;
  inset: 0;
  width: 0.25rem;
  height: 0.25rem;
  margin: auto;
  border-radius: 50%;
  background: currentColor;
}
.brand-lines {
  position: absolute;
  top: 0.32rem;
  left: 0;
  width: 1.55rem;
  height: 1.15rem;
  background: repeating-linear-gradient(to bottom, currentColor 0 1px, transparent 1px 4px);
  mask-image: linear-gradient(to right, transparent 0, #000 28%, #000 100%);
}
.brand-copy {
  display: flex;
  min-width: 0;
  flex-direction: column;
  font-family: var(--font-display);
  line-height: 1;
  letter-spacing: 0.1em;
  white-space: nowrap;
}
.brand-copy strong { font-size: 0.92rem; font-weight: 700; }
.brand-copy span { margin-top: 0.33rem; color: #bdbac2; font-size: 0.49rem; letter-spacing: 0.25em; }

.desktop-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(1.25rem, 2.25vw, 2.1rem);
  color: #d3d0d7;
  font-size: 0.78rem;
}
.desktop-nav a,
.header-login,
.footer-nav a { transition: color var(--transition-fast), opacity var(--transition-fast); }
.desktop-nav a:hover,
.header-login:hover,
.footer-nav a:hover { color: var(--color-white); }

.header-actions {
  display: flex;
  align-items: center;
  justify-self: end;
  gap: 1rem;
}
.header-login { color: #d3d0d7; font-size: 0.78rem; }

.button {
  display: inline-flex;
  min-height: 3.1rem;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding-inline: 1.45rem;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-size: 0.8rem;
  font-weight: 700;
  line-height: 1;
  text-align: center;
  transition: transform var(--transition-fast), background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.button:hover { transform: translateY(-2px); }
.button-small { min-height: 2.65rem; padding-inline: 1.1rem; }
.button-light { background: var(--color-white); color: var(--color-ink-950); }
.button-light:hover { background: #fff; box-shadow: 0 0.85rem 2.8rem rgba(255, 255, 255, 0.12); }
.button-outline { border-color: rgba(255, 255, 255, 0.32); background: rgba(255, 255, 255, 0.025); color: var(--color-white); }
.button-outline:hover { border-color: rgba(255, 255, 255, 0.68); background: rgba(255, 255, 255, 0.07); }

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: #f1eef5;
  font-size: 0.84rem;
  font-weight: 600;
}
.text-link span { font-size: 1.05rem; transition: transform var(--transition-fast); }
.text-link:hover span { transform: translate(0.2rem, 0.2rem); }
.text-link-dark { color: var(--color-ink-text); }

.menu-toggle {
  display: none;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  border: 1px solid var(--line-dark);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.02);
  cursor: pointer;
}
.menu-toggle span {
  display: block;
  width: 1.12rem;
  height: 1px;
  margin: 0.32rem auto;
  background: currentColor;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}
.menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(0.165rem) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-0.165rem) rotate(-45deg); }

.mobile-menu {
  position: fixed;
  inset: var(--header-height) 0 auto;
  max-height: calc(100svh - var(--header-height));
  padding: 1rem var(--gutter) 1.5rem;
  overflow-y: auto;
  visibility: hidden;
  opacity: 0;
  transform: translateY(-0.75rem);
  pointer-events: none;
  background: rgba(7, 7, 8, 0.98);
  border-bottom: 1px solid var(--line-dark);
  transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
}
.mobile-menu.is-open {
  visibility: visible;
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.mobile-menu a {
  display: flex;
  min-height: 3.35rem;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 4.8vw, 1.65rem);
  font-weight: 500;
  letter-spacing: -0.02em;
}
.mobile-menu a::after { content: "↗"; color: #76727c; font-size: 0.95rem; }

.site-footer {
  padding: 4rem 0 2.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  background: #050506;
  color: #f2f0f4;
}
.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) repeat(2, minmax(8rem, 0.6fr)) minmax(12rem, 0.9fr);
  gap: clamp(2rem, 4vw, 4rem);
}
.footer-brand p { margin: 1.5rem 0 0; color: #737079; font-size: 0.78rem; }
.footer-nav { display: flex; flex-direction: column; align-items: flex-start; gap: 0.7rem; }
.footer-nav strong { margin-bottom: 0.25rem; color: #77747c; font-size: 0.63rem; letter-spacing: 0.15em; text-transform: uppercase; }
.footer-nav a { color: #bdbac2; font-size: 0.77rem; }
.footer-note { display: flex; flex-direction: column; gap: 0.45rem; color: #68656d; font-size: 0.65rem; text-align: right; }

@supports not ((backdrop-filter: blur(1rem)) or (-webkit-backdrop-filter: blur(1rem))) {
  .site-header.is-scrolled,
  .site-header.menu-active { background: rgba(7, 7, 8, 0.96); }
}

/* Shared responsive shell: applies consistently on every public page. */
@media (max-width: 73.75rem) {
  .site-header {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 0.75rem;
    max-width: 100vw;
  }
  .desktop-nav,
  .header-login { display: none; }
  .menu-toggle { display: inline-block; }

  .footer-grid {
    grid-template-columns: minmax(0, 1.3fr) repeat(2, minmax(8rem, 0.7fr));
  }
  .footer-note {
    grid-column: 1 / -1;
    flex-direction: row;
    justify-content: space-between;
    padding-top: 1.4rem;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    text-align: left;
  }
}

@media (max-width: 60rem) {
  :root { --header-height: 4.75rem; }
  .site-header { padding-inline: var(--gutter); }
}

@media (max-width: 48rem) {
  .brand-mark {
    flex-basis: 2.4rem;
    width: 2.4rem;
  }
  .brand-copy strong { font-size: 0.82rem; }
  .header-actions { gap: 0.65rem; }
  .header-actions .button { display: none; }
  .mobile-menu {
    box-shadow: 0 1.5rem 3rem rgba(0, 0, 0, 0.28);
  }

  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-brand { grid-column: 1 / -1; }
  .footer-note {
    grid-column: 1 / -1;
    flex-direction: column;
  }
}

@media (max-width: 30rem) {
  .brand-copy span { letter-spacing: 0.18em; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-brand,
  .footer-note { grid-column: 1; }
}

@media (max-width: 22.5rem) {
  .brand-copy span { display: none; }
}