.site-header { --color-primary: #2b4557; --color-primary-hover: #3b586c; position: sticky; top: 0; z-index: 5; border-bottom: 1px solid var(--color-border); background: var(--color-bg); }
.nav-shell { position: relative; min-height: 5.5rem; display: flex; align-items: center; gap: 2rem; }
.brand { display: inline-flex; align-items: center; color: var(--color-text); }
.brand-mark { display: inline-flex; align-items: center; flex: 0 0 auto; }
.brand-mark img { display: block; width: auto; height: 2.75rem; }
.site-header .brand { flex: 0 0 13rem; min-width: 0; }
.site-header .brand > img { display: block; width: 100%; height: auto; }
.nav-links { display: flex; align-items: center; gap: 1.5rem; margin-left: auto; }
.nav-links > a { display: inline-flex; align-items: center; min-height: 2.75rem; color: var(--color-text-muted); font-size: .9375rem; font-weight: 600; white-space: nowrap; }
.nav-links > a:hover, .nav-links > a:focus-visible { color: var(--color-link-hover); }
.nav-links > a[aria-current="page"] { color: var(--color-text); }
.nav-links .mobile-project { display: none; }
.nav-actions { display: flex; flex: 0 0 auto; align-items: center; gap: 1.25rem; }
.language-control { display: inline-flex; flex: 0 0 auto; align-items: center; gap: .125rem; font: .8125rem var(--font-technical); }
.language-control a { display: inline-flex; align-items: center; justify-content: center; min-height: 2.5rem; padding-inline: .25rem; color: var(--color-text-muted); }
.language-control > span { color: var(--color-text-dim); }
.language-control a:hover, .language-control a:focus-visible { color: var(--color-link-hover); }
.language-control a[aria-current="page"] { color: var(--color-text); font-weight: 600; }
.site-header .language-control a { min-height: 2.75rem; }
.header-cta { flex: 0 0 auto; white-space: nowrap; }
.button { min-height: 2.75rem; display: inline-flex; align-items: center; justify-content: center; gap: .5rem; padding: 0 1.125rem; border: 1px solid var(--color-primary); border-radius: var(--radius-sm); background: var(--color-primary); color: var(--color-on-primary); font-size: .9375rem; font-weight: 700; transition: background 160ms ease, border-color 160ms ease, color 160ms ease; }
.button:hover, .button:focus-visible { border-color: var(--color-primary-hover); background: var(--color-primary-hover); }
.button-small { min-height: 2.25rem; padding-inline: .875rem; }
.button-secondary { border-color: var(--color-border-strong); background: transparent; color: var(--color-text); }
.button-secondary:hover, .button-secondary:focus-visible { border-color: var(--color-border-strong); background: var(--color-surface-active); }
.button-link, .text-link { padding: 0; border: 0; background: none; color: var(--color-link); }
.button-link:hover, .button-link:focus-visible, .text-link:hover, .text-link:focus-visible { background: none; color: var(--color-link-hover); }
.text-link { display: inline-block; margin-top: 1.75rem; font-size: .9375rem; }
.menu-toggle { display: none; flex: 0 0 2.75rem; width: 2.75rem; height: 2.75rem; padding: .75rem; border: 0; border-radius: var(--radius-sm); background: transparent; color: var(--color-text); cursor: pointer; }
.menu-toggle:hover, .menu-toggle:focus-visible, .menu-toggle[aria-expanded="true"] { background: var(--color-surface); color: var(--color-link-hover); }
.menu-icon, .menu-icon::before, .menu-icon::after { display: block; height: 1px; background: currentColor; content: ""; }
.menu-icon::before { transform: translateY(-6px); }
.menu-icon::after { transform: translateY(5px); }
.site-footer { border-top: 1px solid var(--color-border); background: var(--color-bg-raised); }
.footer-grid { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(8rem, .65fr) minmax(14rem, 1fr); gap: 3rem; align-items: start; padding-block: 3.5rem; }
.footer-brand { width: 16rem; max-width: 100%; }
.footer-brand img { display: block; width: 100%; height: auto; }
.footer-identity p { margin: 1rem 0 0; color: var(--color-text-muted); font-size: 1rem; line-height: 1.65; }
.footer-identity p > span { display: block; }
.footer-nav { display: grid; justify-items: start; gap: 0; }
.footer-nav a, .footer-utility > a { display: inline-flex; align-items: center; min-height: 2.5rem; color: var(--color-text); font-size: 1rem; line-height: 1.5; }
.footer-nav a:hover, .footer-nav a:focus-visible, .footer-utility > a:hover, .footer-utility > a:focus-visible { color: var(--color-link-hover); }
.footer-meta { display: grid; justify-self: end; gap: 1rem; }
.footer-utility { display: grid; justify-items: start; gap: .25rem; }
.site-footer .language-control { gap: .25rem; font-size: .9375rem; }
.site-footer .language-control a { min-height: 2.75rem; }
.copyright { margin: 0; color: var(--color-text-muted); font-size: .9375rem; line-height: 1.6; }
@media (max-width: 1080px) {
  .nav-shell { gap: 1.25rem; }
  .site-header .brand { flex-basis: 12rem; }
  .nav-links { gap: 1.125rem; }
  .nav-actions { gap: .875rem; }
}
/* Finnish labels need slightly more room than English before collapsing. */
@media (max-width: 880px) {
  html[lang="fi"] .site-header .brand { flex-shrink: 1; }
  html[lang="fi"] .nav-shell > .menu-toggle { display: block; margin-left: auto; }
  html[lang="fi"] .nav-links { position: absolute; top: calc(100% + .5rem); right: 0; width: min(19rem, 100%); display: none; margin: 0; padding: .375rem; border: 1px solid var(--color-border); border-radius: var(--radius-sm); background: var(--color-bg-raised); }
  html[lang="fi"] .nav-links.is-open { display: grid; gap: 0; }
  html[lang="fi"] .nav-links > a:not(.header-cta) { min-height: 2.75rem; padding: .5rem .75rem; border-left: 2px solid transparent; color: var(--color-text); }
  html[lang="fi"] .nav-links > a:not(.header-cta):is(:hover, :focus-visible, [aria-current="page"]) { border-left-color: var(--color-border-strong); background: var(--color-surface-active); }
}
@media (max-width: 800px) {
  .site-header .brand { flex-shrink: 1; }
  .nav-shell > .menu-toggle { display: block; margin-left: auto; }
  .nav-links { position: absolute; top: calc(100% + .5rem); right: 0; width: min(19rem, 100%); display: none; margin: 0; padding: .375rem; border: 1px solid var(--color-border); border-radius: var(--radius-sm); background: var(--color-bg-raised); }
  .nav-links.is-open { display: grid; gap: 0; }
  .nav-links > a:not(.header-cta) { min-height: 2.75rem; padding: .5rem .75rem; border-left: 2px solid transparent; color: var(--color-text); }
  .nav-links > a:not(.header-cta):is(:hover, :focus-visible, [aria-current="page"]) { border-left-color: var(--color-border-strong); background: var(--color-surface-active); }
}
@media (max-width: 980px) {
  .footer-grid { gap: 2.5rem 2rem; }
}
@media (max-width: 800px) {
  .footer-grid { grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); }
  .footer-identity { grid-column: 1 / -1; }
}
@media (max-width: 620px) {
  .site-header { position: static; }
  .nav-shell { min-height: 4.75rem; gap: .75rem; }
  .site-header .brand { flex: 0 1 13rem; }
  .nav-actions { gap: 0; }
  .nav-actions > .header-cta { display: none; }
  .nav-links.is-open .mobile-project { display: inline-flex; justify-content: center; margin: .375rem .25rem .25rem; padding: .5rem 1rem; color: var(--color-on-primary); }
  .nav-links.is-open .mobile-project:hover, .nav-links.is-open .mobile-project:focus-visible { color: var(--color-on-primary); }
  .footer-grid { gap: 1.75rem 1.5rem; padding-block: 2.5rem; }
}