/* ==========================================================================
   layout.css — containers, header, footer, sections
   ========================================================================== */

.container {
  width: 100%;
  max-width: calc(var(--maxw) + var(--gutter) * 2);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: var(--section-y); }
.section--tight { padding-block: calc(var(--section-y) * 0.6); }
.section--white { background: var(--white); border-block: 1px solid var(--line); }

.section-header { max-width: 40rem; margin-bottom: clamp(2rem, 1.5rem + 2vw, 3.25rem); }
.section-header--split {
  max-width: none;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.5rem 3rem;
  flex-wrap: wrap;
}
.section-header__text { max-width: 40rem; }
.section-header p { margin-top: 0.9rem; color: var(--muted); font-size: var(--fs-lead); line-height: 1.5; }

/* ---------- Header ---------- */

#site-header { min-height: var(--header-h); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247, 249, 249, 0.92);
  backdrop-filter: saturate(1.4) blur(12px);
  -webkit-backdrop-filter: saturate(1.4) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}
.site-header.is-scrolled { border-bottom-color: var(--line); }

.site-header__inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--ink);
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.brand:hover { color: var(--ink); }
.brand__mark {
  display: grid;
  place-items: center;
  width: 36px; height: 36px;
  border-radius: 10px;
  background: var(--teal);
  color: var(--white);
}

.nav { display: flex; align-items: center; gap: 2rem; }
.nav__list { display: flex; align-items: center; gap: 0.25rem; }
.nav__link {
  display: block;
  padding: 0.5rem 0.9rem;
  border-radius: var(--r-pill);
  color: var(--ink-2);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.97rem;
  transition: background 0.15s, color 0.15s;
}
.nav__link:hover { background: var(--mist); color: var(--ink); }
.nav__link[aria-current="page"] { background: var(--mist); color: var(--ink); }

.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--white);
  color: var(--ink);
}

@media (max-width: 860px) {
  .nav-toggle { display: grid; }
  .nav {
    position: absolute;
    inset: var(--header-h) 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 1rem;
    padding: 0.75rem var(--gutter) 1.5rem;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-6px);
    transition: opacity 0.18s var(--ease), transform 0.18s var(--ease), visibility 0.18s;
  }
  .nav.is-open { opacity: 1; visibility: visible; transform: none; }
  .nav__list { flex-direction: column; align-items: stretch; gap: 0; }
  .nav__link { padding: 0.9rem 0.25rem; border-radius: 0; border-bottom: 1px solid var(--line); background: none !important; font-size: 1.05rem; }
  .nav__link[aria-current="page"] { color: var(--teal); }
  .nav .btn { width: 100%; }
}

/* ---------- Footer ---------- */

.site-footer { border-top: 1px solid var(--line); background: var(--paper); }
.site-footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 1.2fr;
  gap: 2.5rem 3rem;
  padding-block: clamp(3rem, 2rem + 3vw, 4.5rem);
}
.site-footer__about p { margin-top: 1rem; max-width: 26rem; color: var(--muted); }
.site-footer h2 {
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0;
  margin-bottom: 1rem;
}
.footer-links li + li { margin-top: 0.55rem; }
.footer-links a { color: var(--ink-2); text-decoration: none; }
.footer-links a:hover { color: var(--teal); text-decoration: underline; }
.footer-contact li { display: flex; gap: 0.7rem; align-items: flex-start; color: var(--ink-2); }
.footer-contact li + li { margin-top: 0.7rem; }
.footer-contact svg { flex: none; margin-top: 3px; color: var(--teal); }
.footer-contact a { color: inherit; text-decoration: none; }
.footer-contact a:hover { color: var(--teal); text-decoration: underline; }
.site-footer__base {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem 2rem;
  padding-block: 1.5rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: var(--fs-sm);
}

@media (max-width: 860px) {
  .site-footer__grid { grid-template-columns: 1fr 1fr; }
  .site-footer__about { grid-column: 1 / -1; }
}
@media (max-width: 560px) {
  .site-footer__grid { grid-template-columns: 1fr; }
}