/* nav.css — slim translucent global bar */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  padding-top: env(safe-area-inset-top, 0px);
}
/* Blur lives on a pseudo-element: backdrop-filter on .nav itself would make it
   the containing block for the fixed-position mobile menu. */
.nav::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: var(--nav-bg);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  backdrop-filter: saturate(180%) blur(20px);
  box-shadow: inset 0 -1px 0 var(--hairline);
}
.nav__inner { position: relative; }
.nav__inner {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  min-height: var(--nav-height);
}
.nav__brand {
  color: var(--text);
  font-size: var(--fs-body);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--ls-tight);
  white-space: nowrap;
  margin-right: auto;
}
.nav__brand:hover { text-decoration: none; }

.nav__links {
  display: none;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--space-5);
}
.nav__links a {
  color: var(--text-secondary);
  font-size: var(--fs-fine);
  line-height: var(--nav-height);
  transition: color var(--duration-fast) var(--ease);
}
.nav__links a:hover { color: var(--text); text-decoration: none; }

.nav__toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--tap-target);
  height: var(--tap-target);
  margin-right: calc(-1 * var(--space-2));
  border: 0;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  border-radius: var(--radius-pill);
}
.nav__toggle-icon,
.nav__toggle-icon::before,
.nav__toggle-icon::after {
  display: block;
  width: 18px;
  height: 1.5px;
  background: currentColor;
  border-radius: 2px;
  transition: transform var(--duration-fast) var(--ease), opacity var(--duration-fast) var(--ease);
}
.nav__toggle-icon { position: relative; }
.nav__toggle-icon::before,
.nav__toggle-icon::after { content: ""; position: absolute; left: 0; }
.nav__toggle-icon::before { top: -6px; }
.nav__toggle-icon::after { top: 6px; }
.nav--open .nav__toggle-icon { background: transparent; }
.nav--open .nav__toggle-icon::before { transform: translateY(6px) rotate(45deg); }
.nav--open .nav__toggle-icon::after { transform: translateY(-6px) rotate(-45deg); }

/* Mobile: full-screen menu */
.nav--open .nav__links {
  display: grid;
  position: fixed;
  inset: calc(var(--nav-height) + env(safe-area-inset-top, 0px)) 0 0 0;
  background: var(--bg);
  padding: var(--space-6) var(--gutter);
  align-content: start;
  gap: var(--space-2);
}
.nav--open .nav__links a {
  font-size: var(--fs-card);
  line-height: 1.6;
  color: var(--text);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--ls-tight);
}

@media (min-width: 834px) {
  .nav__links { display: flex; }
  .nav__toggle { display: none; }
}

.nav__links a[aria-current="page"] { color: var(--text); }