/* =========================================================
   Nav, Footer, shared layout components
   ========================================================= */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247,247,243,0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
}

.nav {
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 3rem);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.5rem;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.brand__mark { width: 44px; height: 44px; flex: none; }
.brand__name span { color: var(--teal-deep); }

.nav__links {
  display: flex;
  align-items: center;
  gap: clamp(1.25rem, 2.5vw, 2.25rem);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav__links a {
  font-size: var(--step--1);
  font-weight: 500;
  color: var(--slate);
  padding: 0.4rem 0.1rem;
  border-bottom: 2px solid transparent;
  transition: color 0.15s var(--ease), border-color 0.15s var(--ease);
}
.nav__links a:hover,
.nav__links a[aria-current="page"] {
  color: var(--ink);
  border-color: var(--teal);
}

.nav__cta { display: flex; align-items: center; gap: 1rem; }

.nav__toggle {
  display: none;
  background: none;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.nav__toggle span,
.nav__toggle span::before,
.nav__toggle span::after {
  content: "";
  display: block;
  width: 18px;
  height: 2px;
  background: var(--ink);
  position: relative;
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
}
.nav__toggle span::before { position: absolute; top: -6px; }
.nav__toggle span::after { position: absolute; top: 6px; }

@media (max-width: 860px) {
  .nav__toggle { display: inline-flex; }
  .nav__links {
    position: fixed;
    inset: var(--nav-h) 0 auto 0;
    background: var(--paper);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 0.5rem clamp(1.25rem, 4vw, 3rem) 1.5rem;
    border-bottom: 1px solid var(--line);
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.22s var(--ease), opacity 0.22s var(--ease), visibility 0.22s;
  }
  .nav__links a { padding: 0.85rem 0; width: 100%; border-bottom: 1px solid var(--line); }
  body.nav-open .nav__links {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  body.nav-open .nav__toggle span { transform: rotate(45deg); }
  body.nav-open .nav__toggle span::before { top: 0; transform: rotate(0deg); opacity: 0; }
  body.nav-open .nav__toggle span::after { top: 0; transform: rotate(90deg); }
  .nav__cta .btn span.btn-label-full { display: none; }
}

/* Footer */
.site-footer {
  background: var(--ink);
  color: #B7C0D1;
  padding-block: clamp(2.5rem, 5vw, 4rem) 2rem;
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.3fr repeat(4, 1fr);
  gap: 2.5rem;
}
.footer address {
  font-style: normal;
  font-size: var(--step--1);
  color: #B7C0D1;
  line-height: 1.6;
}
@media (max-width: 760px) {
  .footer__grid { grid-template-columns: 1fr 1fr; }
}
.footer__brand { display: flex; align-items: center; gap: 0.6rem; color: var(--paper); font-family: var(--font-display); font-weight: 600; font-size: 1.1rem; margin-bottom: 0.9rem; }
.footer__brand svg { width: 28px; height: 28px; }
.footer__tag { max-width: 32ch; font-size: var(--step--1); color: #8C9AB3; }
.footer h5 { font-family: var(--font-body); font-size: var(--step--1); color: var(--paper); font-weight: 600; margin-bottom: 0.9rem; }
.footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.55rem; }
.footer a { font-size: var(--step--1); color: #B7C0D1; transition: color 0.15s var(--ease); }
.footer a:hover { color: var(--teal-light); }
.footer__bottom {
  max-width: var(--content-max);
  margin: 2.5rem auto 0;
  padding-inline: clamp(1.25rem, 4vw, 3rem);
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  font-size: var(--step--1);
  color: #7E8CA5;
}

/* Breadcrumb / page header used on inner pages */
.page-header {
  padding-block: clamp(3rem, 7vw, 5.5rem) clamp(2rem, 4vw, 3rem);
}
.page-header .lede { margin-top: 1rem; }

/* Simple two-column layout helper */
.split {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}
@media (max-width: 900px) {
  .split { grid-template-columns: 1fr; }
}

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.5rem;
}
.badge {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.35rem 0.8rem;
  color: var(--slate);
}
.section--ink .badge { border-color: rgba(255,255,255,0.2); color: #C7CEDB; }