/* Save a Farm — site header and mobile menu. Loaded by every page, including
 * legacy pages (donate) that do not load site.css, so it carries its own tokens
 * and button styles. */

.site-header, .mobile-menu, .skip-link {
  --cream: #fffbf4;
  --brown: #3e2215;
  --rust: #a34a24;
  --rust-dark: #8a3c1b;
  --font-display: "Aeonik", "Geist", system-ui, sans-serif;
}
.site-header *, .mobile-menu * { box-sizing: border-box; }
.site-header img { display: block; max-width: 100%; }

.skip-link {
  position: absolute; left: 16px; top: -60px; z-index: 200;
  background: var(--rust); color: var(--cream); padding: 10px 16px; border-radius: 6px;
}
.skip-link:focus { top: 16px; }

.site-header .btn, .mobile-menu .btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 48px; padding: 13px 18px;
  border: 0; border-radius: 8px;
  background: var(--rust); color: var(--cream);
  font: 400 15px/1.2 var(--font-display);
  letter-spacing: .07em; text-transform: uppercase; text-decoration: none;
  -webkit-font-smoothing: auto;
  cursor: pointer;
  transition: background-color .25s ease, color .25s ease, translate .25s ease, box-shadow .25s ease;
}
.site-header .btn:hover, .mobile-menu .btn:hover { background: var(--rust-dark); translate: 0 -2px; box-shadow: 0 10px 24px -12px rgba(62, 34, 21, .6); }
.mobile-menu .btn--lg { font-size: 18px; padding: 14px 22px; }

/* ---------- Header ---------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  padding-top: clamp(20px, 3.4vw, 48px);
  pointer-events: none;
  transition: transform .45s cubic-bezier(.2, .7, .2, 1);
}
.site-header__bar {
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  max-width: 1440px; margin: 0 auto;
  padding: 10px clamp(20px, 5.2vw, 75px);
  pointer-events: auto;
  border-radius: 14px;
  transition: background-color .35s ease, box-shadow .35s ease, -webkit-backdrop-filter .35s ease, backdrop-filter .35s ease;
}

.site-header__logo { position: relative; width: clamp(120px, 11.5vw, 166px); flex: none; }
.site-header__logo img { width: 100%; height: auto; transition: opacity .35s ease; }
.site-header__logo .logo-light { position: absolute; inset: 0; opacity: 0; }
.site-header[data-theme="light"] .logo-dark { opacity: 0; }
.site-header[data-theme="light"] .logo-light { opacity: 1; }
/* data-logo="dark" on a section keeps the rust logo while the links turn white (desktop frames only). */
@media (min-width: 901px) {
  .site-header[data-logo="dark"] .logo-dark { opacity: 1; }
  .site-header[data-logo="dark"] .logo-light { opacity: 0; }
}

.site-nav { display: flex; align-items: center; gap: clamp(20px, 2.4vw, 34px); }
.site-nav__link {
  position: relative;
  font: 400 clamp(15px, 1.25vw, 18px)/1.2 var(--font-display);
  text-transform: uppercase; text-decoration: none;
  color: var(--rust);
  transition: color .35s ease;
}
.site-nav__link::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -6px; height: 1px;
  background: currentColor; transform: scaleX(0); transform-origin: right;
  transition: transform .35s cubic-bezier(.2, .7, .2, 1);
}
.site-nav__link:hover::after { transform: scaleX(1); transform-origin: left; }
.site-header[data-theme="light"] .site-nav__link { color: #fff; }
.site-nav .btn { margin-left: clamp(4px, 1.5vw, 24px); font-size: clamp(15px, 1.25vw, 18px); letter-spacing: 0; padding: 12px 22px; min-height: 47px; border-radius: 10px; }

.menu-toggle {
  display: none;
  width: 48px; height: 40px; padding: 10px 4px;
  background: none; border: 0; cursor: pointer;
  color: var(--brown);
}
.site-header[data-theme="light"] .menu-toggle { color: #fff; }
.menu-toggle span { display: block; height: 1.5px; background: currentColor; transition: transform .35s ease, opacity .35s ease; }
.menu-toggle span + span { margin-top: 8px; }

.mobile-menu {
  position: fixed; inset: 0; z-index: 99;
  display: flex; flex-direction: column; justify-content: center; gap: 22px;
  padding: 120px 28px 40px;
  background: var(--brown);
  color: var(--cream);
  visibility: hidden; opacity: 0;
  transition: opacity .35s ease, visibility 0s linear .35s;
}
.mobile-menu a:not(.btn) {
  font: 400 34px/1.1 var(--font-display); text-decoration: none; text-transform: uppercase;
  color: inherit;
}
.mobile-menu .btn { align-self: flex-start; margin-top: 12px; }
body.menu-open { overflow: hidden; }
body.menu-open .mobile-menu { visibility: visible; opacity: 1; transition: opacity .35s ease; }
body.menu-open .site-header { transform: none; }
body.menu-open .site-header[data-theme] .logo-dark { opacity: 0; }
body.menu-open .site-header[data-theme] .logo-light { opacity: 1; }
body.menu-open .menu-toggle { color: #fff; }
body.menu-open .menu-toggle span:first-child { transform: translateY(5px) rotate(45deg); }
body.menu-open .menu-toggle span:last-child { transform: translateY(-4.5px) rotate(-45deg); }
body.menu-open .site-header .site-header__bar { background: transparent; box-shadow: none; backdrop-filter: none; -webkit-backdrop-filter: none; }

@media (max-width: 900px) {
  .site-nav { display: none; }
  .menu-toggle { display: block; }
}