/* ============================================================
   layout.css — grid, sections, header, footer
   Mobile-first. 4-col base / 8-col @640 / 12-col @900.
   ============================================================ */

.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--pad-x);
}

.grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
@media (min-width: 640px) {
  .grid { grid-template-columns: repeat(8, 1fr); gap: 20px; }
}
@media (min-width: 900px) {
  .grid { grid-template-columns: repeat(12, 1fr); gap: var(--gap); }
}

.section { padding-block: var(--space-section); }
.section--tight { padding-block: calc(var(--space-section) * .55); }
.section--tall  { padding-block: calc(var(--space-section) * 1.25); }

/* surface registers */
.surface-dark    { background: var(--surface-dark);    color: var(--text-on-dark); }
.surface-deepest { background: var(--surface-deepest); color: var(--text-on-dark); }
.surface-light   { background: var(--surface-light);   color: var(--text-on-light); }

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: 64px;
  display: flex;
  align-items: center;
  background: transparent;
  transition: background var(--dur-med) var(--ease-out),
              height var(--dur-med) var(--ease-out),
              box-shadow var(--dur-med) var(--ease-out);
}
@media (min-width: 900px) { .site-header { height: 76px; } }

.site-header.is-scrolled {
  background: rgba(15, 50, 57, .92);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--rule-dark);
}
@media (min-width: 900px) { .site-header.is-scrolled { height: 64px; } }

.site-header__inner {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--pad-x);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.site-header__brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: -.01em;
  color: var(--chalk);
  white-space: nowrap;
}
.site-header__brand img { width: 36px; height: 36px; }

.site-nav { display: none; }
@media (min-width: 900px) {
  .site-nav { display: flex; gap: 36px; align-items: center; }
}
.site-nav a {
  position: relative;
  font-weight: 500;
  font-size: .9375rem;
  color: var(--text-on-dark);
  text-decoration: none;
  padding-block: 6px;
}
.site-nav a::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: var(--candytuft);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--dur-fast) var(--ease-out);
}
.site-nav a:hover::after,
.site-nav a[aria-current="page"]::after { transform: scaleX(1); }

/* CTA pill */
.btn-give {
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 22px;
  background: var(--candytuft);
  color: var(--ink-deep);
  font-weight: 500;
  font-size: .9375rem;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-pill);
  cursor: pointer;
  position: relative;
  transition: background var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out);
}
.btn-give:hover { background: #b4638b; box-shadow: 0 0 0 4px rgba(196,115,155,.35); }

/* mobile: the sticky bottom give-bar carries the CTA; the header stays clean */
/* sticky give-bar owns the CTA below tablet; header pill wraps into the brand otherwise */
@media (max-width: 899px) {
  .site-header .btn-give { display: none; }
}

/* hamburger */
.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px; height: 48px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--chalk);
}
@media (min-width: 900px) { .nav-toggle { display: none; } }

/* full-screen mobile panel */
.nav-panel {
  position: fixed;
  inset: 0;
  z-index: 150;
  background: var(--ink-deep);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--pad-x);
  visibility: hidden;
  opacity: 0;
  transition: opacity var(--dur-med) var(--ease-out), visibility 0s linear var(--dur-med);
}
.nav-panel.is-open {
  visibility: visible;
  opacity: 1;
  transition: opacity var(--dur-med) var(--ease-out);
}
.nav-panel__links { list-style: none; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.nav-panel__links a {
  display: inline-block;
  font-family: var(--font-display);
  font-variation-settings: 'SOFT' 60, 'WONK' 1;
  font-weight: 400;
  font-size: var(--display-l);
  line-height: 1.15;
  color: var(--chalk);
  text-decoration: none;
  padding-block: 6px;
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 320ms var(--ease-out), transform 320ms var(--ease-out);
}
.nav-panel.is-open .nav-panel__links a { opacity: 1; transform: none; }
.nav-panel.is-open .nav-panel__links li:nth-child(1) a { transition-delay: 40ms; }
.nav-panel.is-open .nav-panel__links li:nth-child(2) a { transition-delay: 90ms; }
.nav-panel.is-open .nav-panel__links li:nth-child(3) a { transition-delay: 140ms; }
.nav-panel.is-open .nav-panel__links li:nth-child(4) a { transition-delay: 190ms; }
.nav-panel.is-open .nav-panel__links li:nth-child(5) a { transition-delay: 240ms; }
.nav-panel__links a:hover { color: var(--candytuft); }
.nav-panel__meta {
  margin-top: calc(var(--tile) * 2);
  color: var(--lichen);
}
.nav-panel__close {
  position: absolute;
  bottom: max(24px, env(safe-area-inset-bottom));
  right: 24px;
  width: 56px; height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: 1px solid var(--rule-dark);
  border-radius: var(--radius-pill);
  color: var(--chalk);
  cursor: pointer;
}

/* sticky mobile give bar */
.give-bar {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 90;
  padding: 10px 16px calc(10px + env(safe-area-inset-bottom));
  background: rgba(6, 24, 28, .94);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  transform: translateY(110%);
  transition: transform var(--dur-med) var(--ease-out);
}
.give-bar.is-visible { transform: none; }
.give-bar .btn-give {
  width: 100%;
  min-height: 56px;
  justify-content: center;
  font-size: 1.0625rem;
}
@media (min-width: 900px) { .give-bar { display: none; } }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer { background: var(--ink-deep); color: var(--chalk); }

/* Register 1 — the last ask */
.footer-ask {
  position: relative;
  min-height: 380px;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  isolation: isolate;
}
.footer-ask__img {
  position: absolute;
  inset: 0;
  z-index: -1;
}
.footer-ask__img img {
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: .6;
}
.footer-ask__img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(6,24,28,.92) 0%, rgba(6,24,28,.35) 60%, rgba(6,24,28,.55) 100%);
}
.footer-ask__inner {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding: calc(var(--tile) * 5) var(--pad-x) calc(var(--tile) * 3);
}
.footer-ask__inner .display-l { max-width: 18ch; margin-bottom: calc(var(--tile) * 1.5); }

/* Register 2 — the map */
.footer-map {
  max-width: var(--maxw);
  margin-inline: auto;
  padding: calc(var(--tile) * 3) var(--pad-x);
  border-top: 1px solid var(--rule-dark);
}
.footer-map__cols {
  display: grid;
  gap: 0;
}
@media (min-width: 900px) {
  .footer-map__cols { grid-template-columns: repeat(4, 1fr); gap: var(--gap); }
}
.footer-map h2 {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: var(--label);
  text-transform: uppercase;
  letter-spacing: .14em;
  color: var(--lichen);
  margin-bottom: 16px;
}
.footer-map ul { list-style: none; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.footer-map a {
  color: var(--chalk);
  font-size: var(--small);
  text-decoration: none;
}
.footer-map a:hover { color: var(--candytuft); }

/* desktop: details behave as plain headed columns */
@media (min-width: 900px) {
  .footer-map summary {
    font-family: var(--font-mono);
    font-weight: 500;
    font-size: var(--label);
    text-transform: uppercase;
    letter-spacing: .14em;
    color: var(--lichen);
    margin-bottom: 16px;
    pointer-events: none;
    list-style: none;
  }
  .footer-map summary::-webkit-details-marker { display: none; }
  .footer-map summary::marker { content: ''; }
}

/* mobile accordion */
@media (max-width: 899px) {
  .footer-map details { border-bottom: 1px solid var(--rule-dark); }
  .footer-map summary {
    font-family: var(--font-mono);
    font-weight: 500;
    font-size: var(--label);
    text-transform: uppercase;
    letter-spacing: .14em;
    color: var(--lichen);
    padding: 18px 0;
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  .footer-map summary::-webkit-details-marker { display: none; }
  .footer-map summary::after { content: '+'; font-size: 1rem; }
  .footer-map details[open] summary::after { content: '\2013'; }
  .footer-map details ul { padding-bottom: 18px; }
}

/* Register 3 — fine print */
.footer-fine {
  max-width: var(--maxw);
  margin-inline: auto;
  padding: calc(var(--tile) * 1.5) var(--pad-x) calc(var(--tile) * 2);
  border-top: 1px solid var(--rule-dark);
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  align-items: center;
  justify-content: space-between;
}
.footer-fine__legal {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: var(--label);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--lichen);
  line-height: 2;
}
.footer-fine__right { display: flex; align-items: center; gap: 20px; }
.footer-fine__right img { height: 56px; width: auto; }
.footer-fine__links {
  font-family: var(--font-mono);
  font-size: var(--label);
  letter-spacing: .08em;
  color: var(--lichen);
}
.footer-fine__links a { color: var(--lichen); }