/* Page frame: container, header, navigation, sections, footer */

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

.container--narrow { max-width: calc(760px + var(--gutter) * 2); }

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgb(251 246 236 / 0.9);
  backdrop-filter: saturate(1.4) blur(12px);
  -webkit-backdrop-filter: saturate(1.4) blur(12px);
  border-bottom: 1px solid transparent;
}

.site-header--scrolled,
.site-header:has(.nav-menu[open]) { border-bottom-color: var(--color-border); }

.site-header__bar {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  min-height: 68px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--eye);
  text-decoration: none;
  margin-right: auto;
}

.brand__logo { width: 42px; height: auto; }

.brand__name {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
}

.site-nav { display: none; }

.site-nav__list {
  display: flex;
  gap: var(--space-1);
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-nav__link {
  display: block;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-pill);
  color: var(--color-text);
  font-weight: 550;
  font-size: 0.95rem;
  text-decoration: none;
}

.site-nav__link:hover { background: var(--sand); }
.site-nav__link[aria-current="page"] { background: var(--eye); color: var(--white); }

.site-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

@media (max-width: 419px) { .site-header__actions .site-header__cta { display: none; } }

/* Mobile menu: a <details>, so it works without JavaScript */

.nav-menu { position: static; }

.nav-menu > summary {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-pill);
  background: var(--eye);
  color: var(--white);
  cursor: pointer;
  list-style: none;
}

.nav-menu > summary::-webkit-details-marker { display: none; }

.nav-menu__icon,
.nav-menu__icon::before,
.nav-menu__icon::after {
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: transform 0.2s ease;
}

.nav-menu__icon { position: relative; }
.nav-menu__icon::before, .nav-menu__icon::after { content: ""; position: absolute; left: 0; }
.nav-menu__icon::before { top: -6px; }
.nav-menu__icon::after { top: 6px; }
.nav-menu[open] .nav-menu__icon { background: transparent; }
.nav-menu[open] .nav-menu__icon::before { transform: translateY(6px) rotate(45deg); }
.nav-menu[open] .nav-menu__icon::after { transform: translateY(-6px) rotate(-45deg); }

.nav-menu__panel {
  position: absolute;
  left: 0;
  right: 0;
  top: 100%;
  padding: var(--space-4) var(--gutter) var(--space-8);
  background: var(--cream);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
}

.nav-menu__list {
  margin: 0 0 var(--space-6);
  padding: 0;
  list-style: none;
}

.nav-menu__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.nav-menu__link::after { content: "→"; color: var(--rust); }
.nav-menu__link[aria-current="page"] { color: var(--rust); }

.nav-menu__actions { display: grid; gap: var(--space-3); }

@media (min-width: 960px) {
  .site-nav { display: block; }
  .nav-menu { display: none; }
}

/* Sections */

.section { padding-block: var(--space-section); position: relative; }
.section--tight { padding-block: clamp(2.5rem, 2rem + 3vw, 4.5rem); }
.section--sand { background: var(--sand); }
.section--white { background: var(--white); }
.section--dark { background: var(--slate-deep); color: var(--color-on-dark); }
.section--dark a:not(.btn), .hero a:not(.btn) { color: var(--mustard); }

.section-head { max-width: 760px; margin-bottom: var(--space-12); }
.section-head--center { margin-inline: auto; text-align: center; }
.section-head p { color: var(--color-text-muted); font-size: var(--text-lg); }
.section--dark .section-head p { color: var(--color-on-dark-muted); }

/* Footer */

.site-footer {
  background: var(--slate-ink);
  color: var(--color-on-dark-muted);
  padding-block: var(--space-16) var(--space-8);
  font-size: var(--text-sm);
}

.site-footer a { color: var(--color-on-dark); text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }

.site-footer__top {
  display: grid;
  gap: var(--space-10);
  padding-bottom: var(--space-12);
  border-bottom: 1px solid rgb(255 255 255 / 0.1);
}

@media (min-width: 720px) {
  .site-footer__top { grid-template-columns: 1.4fr repeat(3, 1fr); }
}

.site-footer__brand .brand { color: var(--color-on-dark); }
.site-footer__brand p { max-width: 32ch; margin-top: var(--space-4); }

.site-footer__title {
  margin-bottom: var(--space-3);
  color: var(--color-on-dark);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 650;
  letter-spacing: 0;
  text-transform: uppercase;
}

.site-footer__list { margin: 0; padding: 0; list-style: none; display: grid; gap: var(--space-2); }

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  justify-content: space-between;
  padding-top: var(--space-6);
}