/* =========================================================
   NAV — header + mobile drawer + desktop inline
   Mobile-first. Base = drawer. Desktop = min-width query.
   ========================================================= */

/* ---------------------------------------------------------
   1. HEADER — base (mobile)
   --------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250,247,240,.94);
  border-bottom: 1px solid rgba(15,61,50,.08);
  min-height: 60px;
}
/* backdrop-filter moved to a ::before pseudo-element so it does NOT
   create a containing block for the fixed-position .primary-nav
   (which is a descendant of .site-header in the markup). */
.site-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(250,247,240,.94);
  backdrop-filter: blur(12px) saturate(1.4);
  -webkit-backdrop-filter: blur(12px) saturate(1.4);
  z-index: -1;
  pointer-events: none;
}
.site-header.is-scrolled {
  box-shadow: 0 1px 0 rgba(15,61,50,.06), 0 8px 24px rgba(8,38,30,.05);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 12px;
  gap: 16px;
}

.brand { display: inline-flex; align-items: center; }
.brand__logo {
  height: 32px;
  width: auto;
  display: block;
}
.site-header.is-scrolled .brand__logo { height: 30px; }

/* ---------------------------------------------------------
   2. NAV TOGGLE — base (mobile)
   --------------------------------------------------------- */
.nav-toggle {
  display: block;
  background: none;
  border: 0;
  cursor: pointer;
  padding: 10px;
  margin-left: auto;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--green);
  margin: 5px 0;
  transition: transform 180ms cubic-bezier(.22,1,.36,1),
              opacity 180ms cubic-bezier(.22,1,.36,1);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------------------------------------------------------
   3. PRIMARY NAV — base (mobile drawer)
   --------------------------------------------------------- */
.primary-nav {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(340px, 88vw);
  background: #FFFFFF;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: flex-start;
  gap: 0;
  padding: 88px 28px 32px;
  margin: 0;
  transform: translateX(100%);
  transition: transform 320ms cubic-bezier(.22,1,.36,1);
  z-index: 99;
  box-shadow: -20px 0 60px rgba(8,38,30,.12);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}
.primary-nav.is-open { transform: translateX(0); }

.primary-nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
  width: 100%;
}
.primary-nav ul li {
  border-bottom: 1px solid rgba(15,61,50,.08);
}
.primary-nav ul li:last-child { border-bottom: 0; }

.primary-nav ul li a {
  display: block;
  padding: 18px 0;
  font-family: var(--font-body);
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--green);
  text-decoration: none;
  transition: color 180ms ease;
}
.primary-nav ul li a:hover,
.primary-nav ul li a.is-active { color: var(--green-deep); }
.primary-nav ul li a::after { display: none; }

.primary-nav a.btn--nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 40px;
  padding: 16px 24px;
  font-size: 1rem;
  font-weight: 600;
  background: var(--green);
  color: #FFFFFF;
  border-radius: 6px;
  text-align: center;
  white-space: nowrap;
  width: 100%;
  box-sizing: border-box;
}
.primary-nav a.btn--nav:hover,
.primary-nav a.btn--nav:focus {
  background: var(--green-deep);
  color: #FFFFFF;
}
.primary-nav a.btn--nav svg.btn__arrow {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  color: var(--gold-bright);
}

/* ---------------------------------------------------------
   4. HEADER — desktop upgrade
   --------------------------------------------------------- */
@media (min-width: 1024px) {
  .site-header {
    min-height: 84px;
    position: sticky;
  }
  .site-header.is-scrolled { min-height: 68px; }

  .header-inner { padding-block: 16px; gap: 32px; }

  .brand__logo { height: 52px; }
  .site-header.is-scrolled .brand__logo { height: 42px; }

  .nav-toggle { display: none; }

  .primary-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: auto;
    width: auto;
    height: 84px;
    padding: 0 32px 0 0;
    transform: none;
    background: transparent;
    box-shadow: none;
    overflow: visible;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: flex-end;
    gap: 24px;
    margin-left: 0;
    z-index: 101;
  }
  .primary-nav.is-open { transform: none; }

  /* Match nav height to compact header when scrolled */
  .site-header.is-scrolled ~ .primary-nav,
  body:has(.site-header.is-scrolled) .primary-nav {
    height: 68px;
  }

  .primary-nav ul {
    flex-direction: row;
    gap: 20px;
    width: auto;
  }
  .primary-nav ul li { border-bottom: 0; }
  .primary-nav ul li a {
    padding: 6px 0;
    font-size: 0.875rem;
    position: relative;
    white-space: nowrap;
  }
  .primary-nav ul li a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    height: 1px;
    width: 0;
    background: var(--gold-deep);
    transition: width 320ms cubic-bezier(.22,1,.36,1);
  }
  .primary-nav ul li a:hover::after,
  .primary-nav ul li a.is-active::after { width: 100%; }
  .primary-nav ul li a.is-active { font-weight: 600; }

  .primary-nav a.btn--nav {
    display: inline-flex;
    margin: 0;
    padding: 11px 20px;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: 4px;
  }
}

/* ---------------------------------------------------------
   5. REDUCED MOTION
   --------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  .primary-nav,
  .nav-toggle span,
  .primary-nav ul li a::after {
    transition: none;
  }
}