/* ═══════════════════════════════════════════════════════
   NAV.CSS  — site navigation
   ═══════════════════════════════════════════════════════ */

.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  align-items: start;
  padding: 1.6rem 1.8rem 0;
  pointer-events: none;

  /* Fade in on load */
  opacity: 0;
  animation: navReveal 1s var(--ease-out-expo) 0.2s forwards;
}

@keyframes navReveal {
  to { opacity: 1; }
}

/* ── Scroll behavior: subtle background on scroll ─────── */
.site-nav.scrolled {
  background: linear-gradient(to bottom, rgba(0,0,0,0.8) 0%, transparent 100%);
}

/* ── Left column ──────────────────────────────────────── */
.nav-left {
  display: flex;
  flex-direction: column;
  gap: 0.05rem;
  pointer-events: all;
}

/* ── Center column ────────────────────────────────────── */
.nav-center {
  display: flex;
  justify-content: center;
  pointer-events: all;
}

.nav-name {
  font-family: var(--font-ui);
  font-weight: 300;
  font-size: var(--size-nav);
  letter-spacing: 0.18em;
  color: var(--color-text);
  transition: opacity var(--duration-fast) ease;
}

.nav-name:hover {
  opacity: 0.5;
}

.sig-path { /* Signature path styles */
  stroke: var(--color-text);
  opacity: 1;
  transition: stroke var(--duration-med) var(--ease-in-out),
              opacity var(--duration-fast) ease !important;
}

.nav-center:hover .sig-path,
.nav-center:focus-visible .sig-path {
  opacity: 0.5;
}

/* ── Right column ─────────────────────────────────────── */
.nav-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.05rem;
  pointer-events: all;
}

/* ── Nav links shared ─────────────────────────────────── */
.nav-links-column {
  position: absolute;
}

.nav-link {
  font-family: var(--font-ui);
  font-size: var(--size-nav);
  letter-spacing: 0.18em;
  color: var(--color-muted);
  transition: opacity var(--duration-med) var(--ease-in-out),
              transform var(--duration-med) var(--ease-in-out),
              max-height var(--duration-med) var(--ease-in-out),
              padding var(--duration-med) var(--ease-in-out),
              color var(--duration-fast) ease;
  line-height: 1.9;
  display: block;
  max-height: 2em; /* Set a base max-height for transition */
}

/* When scrolling down, collapse non-active links */
.site-nav.scrolled-down .nav-link:not(.nav-link--active) {
  opacity: 0;
  max-height: 0;
  pointer-events: none;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--color-text);
  outline: none;
}

.nav-link--bold,
.nav-link--active {
  font-weight: 700;
  color: var(--color-text);
}

.nav-link--right {
  text-align: right;
  user-select: none;
}

/* Container for the icon row */
.nav-icons-row {
  display: flex;
  flex-direction: row;
  gap: 1.2rem; /* Adjust spacing between icons */
}

/* ── Nav icons ─────────────────────────────────────────── */
.nav-icon {
  display: flex;
  flex-direction: row;
  cursor: default;
  width: 1rem;
  height: 1rem;
  fill: currentColor;
  color: var(--color-muted);
  transition: fill var(--duration-med) ease,
              opacity var(--duration-med) var(--ease-in-out) !important;
  opacity: 0;
}

.nav-icon:hover,
.nav-icon:focus-visible {
  color: var(--color-text);
}

.nav-icon.scrolled-down {
  cursor: pointer;
  opacity: 1;
}

/* ── Mobile nav ───────────────────────────────────────── */
@media (max-width: 768px) {
  .site-nav {
    grid-template-columns: 1fr auto;
    grid-template-rows: auto auto;
    padding: 1.2rem 1.2rem 0;
    gap: 0.6rem;
  }

  .nav-left {
    grid-column: 1;
    grid-row: 1 / 3;
  }

  .nav-center {
    grid-column: 2;
    grid-row: 1;
    justify-content: flex-end;
  }

  .nav-right {
    grid-column: 2;
    grid-row: 2;
    align-items: flex-end;
  }
}

@media (max-width: 480px) {
  .site-nav {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto;
  }

  .nav-left  { grid-column: 1; grid-row: 2; }
  .nav-center { grid-column: 1; grid-row: 1; justify-content: flex-start; }
  .nav-right { grid-column: 1; grid-row: 3; align-items: flex-start; flex-direction: row; gap: 1.5rem; }
}