/* ============================================================
   Rathe TEC — nav.css
   ============================================================ */

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(251, 246, 238, 0.82);
  backdrop-filter: blur(12px) saturate(1.3);
  -webkit-backdrop-filter: blur(12px) saturate(1.3);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), background-color 0.3s var(--ease),
              box-shadow 0.3s var(--ease);
}

.nav.is-stuck {
  border-bottom-color: var(--line);
  background: rgba(251, 246, 238, 0.94);
  box-shadow: 0 6px 22px rgba(28, 22, 14, 0.07);
}

.nav__inner {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding: 0.7rem var(--gutter);
  display: flex;
  align-items: center;
  gap: 1rem;
  min-height: 68px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  color: var(--ink-900);
  margin-right: auto;
  flex-shrink: 0;
}
.brand:hover { color: var(--ink-900); }

.brand__mark {
  display: grid;
  place-items: center;
  width: 40px; height: 40px;
  border-radius: 11px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--cream-100);
  background: linear-gradient(145deg, var(--green-500), var(--green-700) 60%, var(--tan-600));
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.22), var(--shadow-sm);
  letter-spacing: -0.03em;
}

.brand__text { display: flex; flex-direction: column; line-height: 1.15; }
.brand__text strong {
  font-family: var(--font-display);
  font-size: 1.16rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.brand__text small {
  font-size: 0.66rem;
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--tan-500);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.nav__links a {
  position: relative;
  padding: 0.5rem 0.72rem;
  border-radius: 8px;
  font-size: 0.93rem;
  font-weight: 500;
  color: var(--ink-700);
  text-decoration: none;
  transition: color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.nav__links a:not(.btn)::after {
  content: "";
  position: absolute;
  left: 0.72rem; right: 0.72rem; bottom: 0.28rem;
  height: 2px;
  background: var(--green-400);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.26s var(--ease);
}

.nav__links a:not(.btn):hover { color: var(--pine); background: rgba(138, 169, 135, 0.14); }
.nav__links a:not(.btn):hover::after,
.nav__links a.is-active::after { transform: scaleX(1); }
.nav__links a.is-active { color: var(--pine); }

.nav__cta { margin-left: 0.5rem; padding: 0.66rem 1.1rem; font-size: 0.9rem; }

.nav__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px; height: 44px;
  padding: 0 11px;
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: 11px;
  cursor: pointer;
}
.nav__toggle-bar {
  height: 2px; width: 100%;
  background: var(--ink-800);
  border-radius: 2px;
  transition: transform 0.28s var(--ease), opacity 0.2s var(--ease);
}
.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(2) { opacity: 0; }
.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 940px) {
  .nav__toggle { display: flex; }
  .nav__links {
    position: absolute;
    left: 0; right: 0; top: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0.15rem;
    padding: 0.75rem var(--gutter) 1.15rem;
    background: rgba(251, 246, 238, 0.98);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-md);
    display: none;
  }
  .nav__links.is-open { display: flex; }
  .nav__links a { padding: 0.85rem 0.6rem; font-size: 1.02rem; border-bottom: 1px solid var(--line); }
  .nav__links a:not(.btn)::after { display: none; }
  .nav__cta { margin: 0.7rem 0 0; border-bottom: none !important; }
}