/* nav.css — top nav + mobile drawer + spoke jump sheet. */

.site-nav {
  position: sticky;
  top: 0;
  z-index: var(--z-nav);
  background: rgba(10, 11, 14, 0.84);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid var(--rule);
}
.site-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-4);
  padding-block: var(--s-3);
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  color: var(--bone);
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 800;
  letter-spacing: -0.01em;
  font-size: 1rem;
}
.brand-mark svg { width: 28px; height: 28px; }
.brand-mark__suffix { color: var(--bone-faint); font-weight: 400; font-style: normal; font-family: var(--font-secondary); font-size: var(--fs-eyebrow); letter-spacing: 0.16em; text-transform: uppercase; margin-inline-start: var(--s-2); }

.site-nav__links { display: none; }
@media (min-width: 1024px) {
  .site-nav__links {
    display: flex;
    align-items: center;
    gap: var(--s-6);
  }
  .site-nav__link {
    font-family: var(--font-secondary);
    font-size: 0.9rem;
    color: var(--bone-dim);
    font-weight: 600;
    letter-spacing: 0.02em;
  }
  .site-nav__link:hover,
  .site-nav__link[aria-current="page"] { color: var(--bone); }
  .site-nav__link[aria-current="page"] { position: relative; }
  .site-nav__link[aria-current="page"]::after {
    content: "";
    position: absolute;
    left: 0; right: 0; bottom: -6px;
    height: 1px;
    background: var(--accent);
  }
}

.site-nav__cta { display: none; }
@media (min-width: 1024px) {
  .site-nav__cta { display: inline-flex; }
}

/* Hamburger */
.nav-toggle {
  width: 44px; height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--bone);
}
@media (min-width: 1024px) { .nav-toggle { display: none; } }
.nav-toggle svg { width: 22px; height: 22px; }

/* Mobile drawer (<dialog>) */
.nav-drawer {
  position: fixed;
  inset: 0;
  width: 100%; max-width: 100%;
  height: 100vh; height: 100dvh;
  margin: 0;
  background: var(--ink);
  border: 0;
  padding: 0;
  color: var(--bone);
}
.nav-drawer::backdrop { background: rgba(0,0,0,0.6); }
.nav-drawer__inner {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: var(--s-4) var(--gutter) calc(var(--s-7) + env(safe-area-inset-bottom));
}
.nav-drawer__top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--s-6);
}
.nav-drawer__close { width: 44px; height: 44px; color: var(--bone); }
.nav-drawer__list { list-style: none; padding: 0; margin: 0; }
.nav-drawer__item { border-top: 1px solid var(--rule); }
.nav-drawer__item:last-child { border-bottom: 1px solid var(--rule); }
.nav-drawer__link {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-block: var(--s-5);
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 800;
  font-size: clamp(1.75rem, 7vw, 2.25rem);
  color: var(--bone);
}
.nav-drawer__link[aria-current="page"] { color: var(--accent); }
.nav-drawer__footer { margin-top: auto; padding-top: var(--s-6); }
.nav-drawer__cta { width: 100%; justify-content: center; }

/* Spoke jump sheet (mobile only) */
.spoke-jump-btn {
  position: fixed;
  right: var(--gutter);
  bottom: calc(var(--s-4) + env(safe-area-inset-bottom));
  z-index: var(--z-sticky-cta);
  display: inline-flex;
}
@media (min-width: 1024px) { .spoke-jump-btn { display: none; } }
.spoke-jump-sheet {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  max-height: 70vh;
  width: 100%;
  margin: 0;
  border: 0;
  border-radius: var(--r-3) var(--r-3) 0 0;
  background: var(--ink-2);
  color: var(--bone);
  padding: var(--s-5) var(--gutter) calc(var(--s-7) + env(safe-area-inset-bottom));
}
.spoke-jump-sheet::backdrop { background: rgba(0,0,0,0.6); }
.spoke-jump-sheet__handle {
  width: 40px; height: 4px; border-radius: 2px; background: var(--rule); margin: 0 auto var(--s-4);
}
.spoke-jump-sheet ol { list-style: none; padding: 0; margin: 0; }
.spoke-jump-sheet li { border-bottom: 1px solid var(--rule); }
.spoke-jump-sheet li:last-child { border-bottom: 0; }
.spoke-jump-sheet a {
  display: block;
  padding-block: var(--s-4);
  font-family: var(--font-secondary);
  font-weight: 600;
  color: var(--bone-dim);
}
.spoke-jump-sheet a:hover { color: var(--bone); }

/* Progress bar (tablet only) */
.spoke-progress {
  display: none;
  position: sticky;
  top: 60px;
  z-index: 80;
  height: 2px;
  background: var(--rule);
  margin-bottom: var(--s-5);
}
@media (min-width: 640px) and (max-width: 1023px) {
  .spoke-progress { display: block; }
}
.spoke-progress__fill {
  height: 100%;
  background: var(--accent);
  width: 0%;
  transition: width var(--dur-fast) linear;
}