/* ============ NAV.CSS ============ */

/* --- Shared Nav --- */
.site-header {
  position: relative;
  z-index: var(--z-nav);
}

.nav-shell {
  position: fixed;
  inset: 0 0 auto;
  z-index: var(--z-nav);
  padding: 18px 0;
  transition:
    background-color 0.4s ease,
    backdrop-filter 0.4s ease,
    border-color 0.4s ease,
    padding 0.4s ease;
}

.nav-shell.is-scrolled {
  background: rgba(10, 10, 10, 0.88);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  padding: 12px 0;
}

.nav-inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-height: 48px;
}

.brand-mark {
  font-family: var(--font-display);
  font-size: 18px;
  font-style: italic;
  letter-spacing: 0.08em;
}

.nav-links {
  display: flex;
  justify-content: center;
  gap: clamp(16px, 2vw, 28px);
}

.nav-link,
.menu-trigger {
  position: relative;
  font-size: var(--text-nav);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.55;
}

.nav-link::after,
.menu-trigger::after,
.footer-link::after,
.inline-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 100%;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--duration-base) var(--ease-smooth);
}

.nav-link:hover,
.nav-link:focus-visible,
.menu-trigger:hover,
.menu-trigger:focus-visible,
.nav-link.is-active {
  opacity: 1;
}

.nav-link:hover::after,
.nav-link:focus-visible::after,
.menu-trigger:hover::after,
.menu-trigger:focus-visible::after,
.nav-link.is-active::after,
.footer-link:hover::after,
.footer-link:focus-visible::after,
.inline-link:hover::after,
.inline-link:focus-visible::after {
  transform: scaleX(1);
}

.nav-actions {
  display: flex;
  justify-content: end;
  align-items: center;
  gap: 16px;
}

.hamburger {
  display: none;
  width: 42px;
  height: 42px;
  position: relative;
}

.hamburger__line {
  position: absolute;
  left: 9px;
  right: 9px;
  height: 1px;
  background: var(--color-text);
  transition:
    transform var(--duration-base) var(--ease-out),
    opacity var(--duration-base) var(--ease-out),
    top var(--duration-base) var(--ease-out);
}

.hamburger__line:nth-child(1) {
  top: 14px;
}

.hamburger__line:nth-child(2) {
  top: 21px;
}

.hamburger__line:nth-child(3) {
  top: 28px;
}

.hamburger.is-active .hamburger__line:nth-child(1) {
  top: 21px;
  transform: rotate(45deg);
}

.hamburger.is-active .hamburger__line:nth-child(2) {
  opacity: 0;
}

.hamburger.is-active .hamburger__line:nth-child(3) {
  top: 21px;
  transform: rotate(-45deg);
}

/* --- Overlay Menu --- */
.overlay-menu {
  position: fixed;
  inset: 0;
  z-index: var(--z-overlay);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 30px var(--container-x) 36px;
  background: rgba(10, 10, 10, 0.98);
  transform: translateY(-100%);
  opacity: 0;
  pointer-events: none;
  transition:
    transform 0.6s var(--ease-out),
    opacity 0.6s var(--ease-out);
}

.overlay-menu.is-open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.overlay-menu__top {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.overlay-close {
  font-size: clamp(28px, 4vw, 48px);
  line-height: 1;
}

.overlay-nav {
  display: grid;
  place-items: center;
  gap: 18px;
  text-align: center;
  flex: 1;
}

.overlay-link {
  font-family: var(--font-display);
  font-size: clamp(36px, 7vw, 72px);
  font-style: italic;
  line-height: 0.95;
  opacity: 0;
  transform: translateY(18px);
}

.overlay-menu.is-open .overlay-link {
  animation: overlayLinkIn 0.6s var(--ease-out) forwards;
}

.overlay-menu.is-open .overlay-link:nth-child(2) {
  animation-delay: 0.06s;
}

.overlay-menu.is-open .overlay-link:nth-child(3) {
  animation-delay: 0.12s;
}

.overlay-menu.is-open .overlay-link:nth-child(4) {
  animation-delay: 0.18s;
}

.overlay-menu.is-open .overlay-link:nth-child(5) {
  animation-delay: 0.24s;
}

.overlay-socials {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px 20px;
  color: var(--color-text-muted);
  font-size: var(--text-small);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

@keyframes overlayLinkIn {
  from {
    opacity: 0;
    transform: translateY(18px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}