/* ==========================================================================
   Header — absolute at load, fixed after ~100px scroll
   ========================================================================== */

.header {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 60;
  height: var(--header-h);
  transition:
    background-color 320ms var(--ease-fast),
    height 320ms var(--ease-fast),
    border-color 320ms var(--ease-fast);
}

.header__inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  height: 100%;
}

.header.is-stuck {
  position: fixed;
  height: var(--header-h-stuck);
  background: rgba(8, 8, 6, .82);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, .07);
  animation: header-in 420ms var(--ease-reveal) both;
}

@keyframes header-in {
  from { transform: translateY(-100%); }
  to   { transform: translateY(0); }
}

/* Logo */
.logo {
  display: inline-flex;
  align-items: center;
  height: 44px;
}
.logo svg {
  width: clamp(120px, 10.5vw, 160px);
  height: auto;
}
.logo__mark { fill: none; stroke: currentColor; stroke-width: 4.2; stroke-linecap: round; stroke-linejoin: round; }
.logo__dot { fill: var(--accent); }

/* Navigation */
.nav {
  justify-self: center;
}
.nav__list {
  display: flex;
  align-items: center;
  gap: clamp(28px, 3vw, 48px);
}
.nav__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 2px;
  font-size: var(--fs-nav);
  font-weight: 500;
  letter-spacing: var(--tracking-nav);
  text-transform: uppercase;
  opacity: .72;
  transform: translateY(0);
  transition:
    opacity var(--dur-fast) var(--ease-fast),
    transform var(--dur-fast) var(--ease-fast);
}
.nav__link::after {
  content: "";
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0;
  transform: scale(.6);
  transition: opacity var(--dur-fast) var(--ease-fast), transform var(--dur-fast) var(--ease-fast);
}
.nav__link[aria-current="true"] { opacity: 1; }
.nav__link[aria-current="true"]::after { opacity: 1; transform: scale(1); }

@media (hover: hover) and (pointer: fine) {
  .nav__link:hover { opacity: 1; transform: translateY(-1px); }
}

.header__cta { justify-self: end; }

/* Mobile trigger */
.menu-trigger {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-width: 44px;
  height: 44px;
  padding-inline: 14px;
  border: 1px solid rgba(255, 255, 255, .28);
  border-radius: var(--radius-button);
  font-size: var(--fs-label);
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
}
.menu-trigger__icon {
  position: relative;
  width: 16px;
  height: 10px;
}
.menu-trigger__icon::before,
.menu-trigger__icon::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 1px;
  background: currentColor;
}
.menu-trigger__icon::before { top: 0; }
.menu-trigger__icon::after { bottom: 0; }

@media (max-width: 1023px) {
  .nav { display: none; }
  .header__cta .btn { display: none; }
  .menu-trigger { display: inline-flex; }
}
@media (max-width: 767px) {
  :root { --header-h: 76px; --header-h-stuck: 66px; }
}