/* ============================================================
   LAYOUT — header/nav, section rhythm, grids, footer
============================================================ */

/* ---------- Section rhythm ---------- */
main > section {
  padding: var(--space-3) var(--space-2);
  max-width: var(--container);
  margin-inline: auto;
  scroll-margin-top: var(--header-offset); /* clears the sticky header on anchor jumps */
}

/* ---------- Header: transparent over the hero, solid once scrolled ---------- */
main { padding-block-start: var(--header-h); }

.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--header-h);
  background: transparent;
  border-block-end: 1px solid transparent;
  transition: background var(--t-slow) var(--ease), border-color var(--t-slow) var(--ease);
}

/* while transparent, give nav text a shadow so it reads over any photo */
.site-header #nav-menu a,
.site-header .nav-toggle {
  text-shadow: 0 1px 6px rgb(0 0 0 / 0.45);
}

.site-header.scrolled {
  background: color-mix(in srgb, var(--ink) 88%, transparent);
  backdrop-filter: blur(10px);
  border-block-end-color: var(--surface-2);
  box-shadow: 0 4px 24px rgb(0 0 0 / 0.25);
}
.site-header.scrolled #nav-menu a,
.site-header.scrolled .nav-toggle {
  text-shadow: none;
}

.site-header nav {
  max-width: var(--container);
  height: 100%;
  margin-inline: auto;
  padding-inline: var(--space-3);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.brand { display: flex; align-items: center; }
.brand-logo {
  height: clamp(1.8rem, 4vw + 1rem, 3.6rem);
  width: auto;
  filter: drop-shadow(0 1px 6px rgb(0 0 0 / 0.45)); /* same legibility boost as the text had */
}
.site-header.scrolled .brand-logo { filter: none; }

/* ---------- Nav list ---------- */
#nav-menu {
  list-style: none;
  padding: 0;
  display: flex;
  gap: var(--space-4);
}

#nav-menu a {
  text-decoration: none;
  color: var(--cream);
  position: relative;
  padding-block: 4px;
  transition: transform var(--t-fast) var(--ease);
}

/* underline slides in on hover / current section */
#nav-menu a::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  bottom: 0;
  height: 2px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t-fast) var(--ease);
}
#nav-menu a:hover::after,
#nav-menu a.active::after { transform: scaleX(1); }
#nav-menu a:hover { transform: translateY(-1px); }
#nav-menu a.active { color: var(--gold); }

/* Donate stands apart from the plain-text links — the one action that matters */
#nav-menu a.nav-donate {
  background: var(--gold);
  color: var(--ink);
  padding: 0.4rem 1rem;
  border-radius: 999px;
  text-shadow: none;
  transition: background var(--t-fast) var(--ease), transform var(--t-fast) var(--ease);
}
#nav-menu a.nav-donate::after { display: none; }  /* no underline on a pill */
#nav-menu a.nav-donate:hover {
  background: var(--gold-deep);
  color: var(--cream);
  transform: translateY(-1px);
}

@media (max-width: 63.99rem) {
  #nav-menu a.nav-donate {
    margin: var(--space-1) var(--space-3);
    text-align: center;
    border-block-start: none;
  }
}

/* ---------- Mobile nav ---------- */
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--gold-deep);
  color: var(--gold);
  border-radius: var(--radius);
  padding: 0.35rem 0.7rem;
  font-size: var(--step-1);
  transition: background var(--t-fast) var(--ease);
}
.nav-toggle:hover { background: var(--surface); }

@media (max-width: 47.99rem) {
  .nav-toggle { display: block; }

  #nav-menu {
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    flex-direction: column;
    gap: 0;
    overflow: hidden;
    max-height: 0;
    background: var(--ink);
    border-block-end: 1px solid var(--surface-2);
    transition: max-height 300ms var(--ease);
  }
  #nav-menu.open {
    max-height: calc(100svh - var(--header-h)); /* never clips long menus */
    overflow-y: auto;
  }

  #nav-menu a {
    display: block;
    padding: var(--space-2) var(--space-3);
    text-shadow: none;             /* solid bg now, no photo behind */
    border-block-start: 1px solid var(--surface-2);
  }
}

/* ---------- Shared grids ---------- */
.pillar-grid {
  list-style: none;
  padding: 0;
  display: grid;
  gap: var(--space-2);
  grid-template-columns: 1fr;
}

.impact-photos {
  display: grid;
  gap: var(--space-2);
  grid-template-columns: 1fr 1fr;
  margin-block-start: var(--space-3);
}

@media (min-width: 48rem) {
  .pillar-grid { grid-template-columns: 1fr 1fr; gap: var(--space-3); }
}

/* ---------- Footer ---------- */
footer {
  background: var(--surface);
  border-block-start: 1px solid var(--surface-2);
  padding: var(--space-4) var(--space-3) var(--space-2);
  max-width: none;
}

.footer-grid {
  max-width: var(--container);
  margin-inline: auto;
  display: grid;
  gap: var(--space-3);
  grid-template-columns: 1fr;
}
@media (min-width: 40rem) { .footer-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 64rem) { .footer-grid { grid-template-columns: 1.4fr 1fr 1.2fr 1fr; } }

.footer-logo { height: 3.5rem; width: auto; margin-block-end: var(--space-2); }
.footer-tagline { color: var(--muted); font-size: var(--text-sm); max-width: 34ch; }
.footer-reg { color: var(--muted); font-size: var(--text-xs); }

.footer-col h3 {
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--gold);
  margin-block: 0 var(--space-2);
}
.footer-col ul { list-style: none; padding: 0; display: grid; gap: 0.5rem; }
.footer-col a {
  color: var(--cream);
  text-decoration: none;
  font-size: var(--text-sm);
  transition: color var(--t-fast) var(--ease);
}
.footer-col a:hover { color: var(--gold); }

.footer-col address {
  font-style: normal;
  color: var(--muted);
  font-size: var(--text-sm);
  margin-block-end: var(--space-2);
}
.footer-col address a { color: var(--cream); }

.footer-social { display: flex; gap: var(--space-2); }

.footer-bottom {
  max-width: var(--container);
  margin-inline: auto;
  margin-block-start: var(--space-4);
  padding-block-start: var(--space-2);
  border-block-start: 1px solid var(--surface-2);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  text-align: center;
}

.footer-bottom p {
  color: var(--muted);
  font-size: var(--text-xs);
  margin: 0;
  max-width: none;   /* base.css caps paragraph width for prose — not wanted in a single-line bar */
}

.footer-legal {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  gap: var(--space-3);
}


.footer-legal a { color: var(--muted); font-size: var(--text-xs); text-decoration: none; }
.footer-legal a:hover { color: var(--gold); }

/* ---------- Mobile refinements ---------- */
@media (max-width: 40rem) {
  .site-header nav { padding-inline: var(--space-2); }

  main > section { padding-inline: var(--space-2); }

  footer { padding: var(--space-4) var(--space-2) var(--space-2); }

  .footer-legal {
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-1) var(--space-2);
  }

  .impact-photos { grid-template-columns: 1fr; }
}