/* ==========================================================================
   Shared site chrome: header and footer (partials/nav.html, partials/footer.html)
   Used by every page built from the partials, identical on each of them.
   ========================================================================== */
@font-face { font-family: "Inter"; src: url("/assets/fonts/inter.woff2") format("woff2"); font-weight: 100 900; font-display: swap; }

.site-nav, .site-foot {
  --c-bg: #FFFFFF;
  --c-panel: #FFFFFF;
  --c-ink: #0E0E0D;
  --c-body: #3E3D3A;
  --c-soft: #74726C;
  --c-line: #E7E5E0;
  --c-coral: #F26440;
  --c-on-ink: #FFFFFF;
  font-family: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 16px; line-height: 1.5;
}
.site-nav .wrap, .site-foot .wrap { width: 100%; max-width: calc(1320px + 2 * clamp(20px, 4vw, 48px)); margin: 0 auto; padding: 0 clamp(20px, 4vw, 48px); }
.site-nav a, .site-foot a { text-decoration: none; }

/* ---------- header ---------- */
.site-nav {
  position: sticky; top: 0; left: 0; right: 0; z-index: 100;
  background: color-mix(in srgb, var(--c-bg) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(14px); -webkit-backdrop-filter: saturate(1.4) blur(14px);
  border-bottom: 1px solid var(--c-line);
  transition: background-color .35s ease, border-color .35s ease;
}
.site-nav .nav-inner { display: flex; align-items: center; gap: 40px; height: 72px; }
.site-nav .brand { display: block; flex: none; }
.site-nav .brand img { height: 24px; width: auto; display: block; }
.site-nav .nav-links { flex: 1; display: flex; align-items: center; gap: 30px; font-size: 0.94rem; font-weight: 500; }
.site-nav .nav-item { position: relative; display: flex; align-items: center; }
.site-nav .nav-links > .nav-item > a { color: var(--c-body); padding: 6px 0; white-space: nowrap; transition: color .2s; }
.site-nav .nav-links > .nav-item > a:hover { color: var(--c-ink); }
.site-nav .nav-right { margin-left: auto; display: flex; align-items: center; gap: 12px; }
.site-nav .lang-btn { height: 36px; min-width: 52px; padding: 0 14px; border-radius: 999px; border: 1px solid var(--c-line); background: transparent; color: var(--c-ink); font: 550 0.8rem inherit; letter-spacing: .04em; cursor: pointer; }
.site-nav .lang-btn:empty { display: none; }
.site-nav .btn { display: inline-flex; align-items: center; gap: 8px; height: 40px; padding: 0 18px; border-radius: 999px; background: var(--c-ink); color: var(--c-on-ink); font-weight: 600; font-size: 0.9rem; white-space: nowrap; border: 1px solid transparent; overflow: visible; }
.site-nav .btn::before { content: none; }
.site-nav .btn:hover { color: var(--c-on-ink); }
.site-nav .btn .arrow { transition: transform .3s cubic-bezier(.2, .7, .2, 1); }
.site-nav .btn:hover .arrow { transform: translateX(3px); }

/* dropdowns */
.site-nav .nav-sub:empty { display: none; }
.site-nav .nav-item:has(.nav-sub a) > a { padding-right: 16px; background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 10 10'%3E%3Cpath d='M2 3.5 5 6.5 8 3.5' fill='none' stroke='%2374726C' stroke-width='1.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") no-repeat right center; }
.site-nav .nav-sub {
  position: absolute; top: calc(100% + 18px); left: -18px; min-width: 300px; z-index: 102;
  display: grid; gap: 2px; padding: 8px;
  background: var(--c-panel); border: 1px solid var(--c-line); border-radius: 18px; box-shadow: 0 30px 60px -30px rgba(14, 14, 13, .35);
  opacity: 0; visibility: hidden; transform: translateY(-6px);
  transition: opacity .2s ease, transform .2s ease, visibility 0s linear .2s;
}
.site-nav .nav-lang .nav-sub { left: auto; right: 0; min-width: 180px; }
.site-nav .nav-sub::before { content: ""; position: absolute; left: 0; right: 0; top: -20px; height: 20px; }
.site-nav .nav-item:hover .nav-sub, .site-nav .nav-item:focus-within .nav-sub { opacity: 1; visibility: visible; transform: none; transition-delay: 0s; }
.site-nav .nav-sub a { display: grid; gap: 2px; padding: 12px 14px; border-radius: 12px; color: var(--c-ink); }
.site-nav .nav-sub a:hover { background: var(--c-bg); filter: brightness(.97); }
.site-nav .nav-sub b { font-weight: 600; font-size: 0.95rem; color: var(--c-ink); }
.site-nav .nav-sub span { font-size: 0.82rem; color: var(--c-soft); font-weight: 450; }

/* transparent over a dark hero (homepage), solid once scrolled */
.nav-overlay .site-nav { position: fixed; background: transparent; border-bottom-color: transparent; backdrop-filter: none; -webkit-backdrop-filter: none; }
.nav-overlay .site-nav:not(.scrolled) .nav-links > .nav-item > a { color: rgba(255, 255, 255, .86); }
.nav-overlay .site-nav:not(.scrolled) .nav-links > .nav-item > a:hover { color: #fff; }
.nav-overlay .site-nav:not(.scrolled) .nav-item:has(.nav-sub a) > a { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 10 10'%3E%3Cpath d='M2 3.5 5 6.5 8 3.5' fill='none' stroke='white' stroke-width='1.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E"); }
.nav-overlay .site-nav:not(.scrolled) .lang-btn { color: #fff; border-color: rgba(255, 255, 255, .45); }
.nav-overlay .site-nav:not(.scrolled) .btn { background: #fff; color: #0E0E0D; }
.nav-overlay .site-nav:not(.scrolled) .nav-burger span { background: #fff; }
.nav-overlay .site-nav.scrolled { background: rgba(255, 255, 255, .9); border-bottom-color: var(--c-line); backdrop-filter: saturate(1.4) blur(14px); -webkit-backdrop-filter: saturate(1.4) blur(14px); }

/* mobile */
.site-nav .nav-toggle { display: none; }
.site-nav .nav-burger { display: none; }
@media (max-width: 1080px) {
  .site-nav .nav-inner { justify-content: space-between; }
  .site-nav .nav-burger { display: inline-flex; flex-direction: column; justify-content: center; align-items: center; gap: 5px; width: 40px; height: 40px; cursor: pointer; z-index: 101; -webkit-tap-highlight-color: transparent; }
  .site-nav .nav-burger span { display: block; width: 22px; height: 2px; background: var(--c-ink); border-radius: 2px; transition: transform .3s ease, opacity .2s ease; }
  .site-nav .nav-toggle:checked ~ .nav-burger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .site-nav .nav-toggle:checked ~ .nav-burger span:nth-child(2) { opacity: 0; }
  .site-nav .nav-toggle:checked ~ .nav-burger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .site-nav .nav-links {
    position: fixed; top: 72px; left: 0; right: 0; height: calc(100dvh - 72px);
    flex-direction: column; align-items: stretch; gap: 0; padding: 8px clamp(20px, 4vw, 48px) 32px;
    background: var(--c-bg); overflow-y: auto;
    opacity: 0; transform: translateY(-8px); pointer-events: none; transition: opacity .25s ease, transform .25s ease;
  }
  .site-nav .nav-toggle:checked ~ .nav-links { opacity: 1; transform: none; pointer-events: auto; }
  .site-nav .nav-item { display: block; }
  .site-nav .nav-links > .nav-item > a { display: block; padding: 16px 0; font-size: 1.25rem; color: var(--c-ink) !important; border-bottom: 1px solid var(--c-line); }
  .site-nav .nav-item:has(.nav-sub a) > a { background-position: right 4px center; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 10 10'%3E%3Cpath d='M2 3.5 5 6.5 8 3.5' fill='none' stroke='%2374726C' stroke-width='1.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") !important; }
  .site-nav .nav-sub { position: static; min-width: 0; opacity: 1; visibility: visible; transform: none; transition: none; background: none; border: 0; box-shadow: none; padding: 4px 0 12px 12px; border-radius: 0; border-bottom: 1px solid var(--c-line); }
  .site-nav .nav-sub::before { content: none; }
  .site-nav .nav-sub a { padding: 9px 0; }
  .site-nav .nav-sub span { display: none; }
  .site-nav .nav-sub b { font-weight: 500; color: var(--c-body); }
  .site-nav .nav-right { margin: 24px 0 0; flex-wrap: wrap; }
  .site-nav .nav-lang .nav-sub { display: flex; gap: 16px; border: 0; padding: 0 0 0 12px; }
  .site-nav .nav-lang { display: flex; align-items: center; }
  .site-nav .nav-lang .lang-btn { color: var(--c-ink) !important; border-color: var(--c-line) !important; }
  .nav-overlay .site-nav:has(.nav-toggle:checked) { background: var(--c-bg); }
  .nav-overlay .site-nav:has(.nav-toggle:checked) .nav-burger span { background: var(--c-ink); }
  .site-nav .nav-right .btn { background: var(--c-ink) !important; color: var(--c-on-ink) !important; }
}
body:has(.site-nav .nav-toggle:checked) { overflow: hidden; }

/* ---------- footer ---------- */
.site-foot { border-top: 1px solid var(--c-line); padding: clamp(64px, 8vw, 104px) 0 36px; color: var(--c-soft); background: var(--c-bg); font-size: 0.94rem; position: relative; z-index: 1; }
.site-foot p, .site-foot h4, .site-foot ul { margin: 0; padding: 0; }
.site-foot ul { list-style: none; }
.site-foot a { color: var(--c-body); transition: color .2s; }
.site-foot a:hover { color: var(--c-ink); }
.site-foot .foot-top { display: grid; gap: 16px; margin-bottom: 56px; }
.site-foot .foot-top .brand img { height: 26px; width: auto; }
.site-foot .foot-tag { max-width: 40ch; }
.site-foot .foot-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 32px; margin-bottom: 72px; }
.site-foot .foot-grid h4 { font-size: 0.9rem; font-weight: 600; color: var(--c-ink); margin-bottom: 16px; }
.site-foot .foot-grid ul { display: grid; gap: 10px; }
@media (max-width: 840px) { .site-foot .foot-grid { grid-template-columns: 1fr 1fr; gap: 28px 20px; } .site-foot .foot-grid ul { gap: 0; } .site-foot .foot-grid a { display: block; padding: 7px 0; } }
.site-foot .foot-bottom { border-top: 1px solid var(--c-line); padding-top: 24px; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; font-size: 0.84rem; }
.site-foot .foot-langs { display: flex; gap: 18px; }
.site-foot .site-version { margin-left: 8px; opacity: .5; font-size: .85em; }