/* Shell-specific styles: navbar, footer, section headers */

.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 60;
  transition: background var(--dur-base) var(--ease-apple),
              border-color var(--dur-base) var(--ease-apple),
              backdrop-filter var(--dur-base) var(--ease-apple);
  border-bottom: 1px solid transparent;
}
.navbar--scrolled {
  background: rgba(6, 8, 11, 0.72);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  border-bottom-color: var(--line-1);
}
.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 24px;
}
.navbar__nav { display: flex; align-items: center; gap: 4px; }
.navbar__link {
  padding: 8px 14px;
  border-radius: var(--r-pill);
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  background-image: linear-gradient(110deg,
    #ffffff 0%, #e9d5ff 15%, #c4b5fd 30%, #a855f7 45%,
    #7c3aed 55%, #a855f7 70%, #e9d5ff 85%, #ffffff 100%);
  background-size: 300% 300%;
  background-position: 0% 50%;
  background-clip: text;
  -webkit-background-clip: text;
  color: var(--fg-2);
  -webkit-text-fill-color: var(--fg-2);
  transition: -webkit-text-fill-color 280ms var(--ease-apple);
}
.logo__name { white-space: nowrap; }
.navbar__link:hover {
  -webkit-text-fill-color: transparent;
  animation: glowSlide 2.4s ease-in-out infinite;
}
.navbar__link.is-active {
  -webkit-text-fill-color: var(--fg-1);
}
.navbar__cta { display: flex; gap: 8px; align-items: center; }

/* Brand wordmark hover — animated white→violet gradient */
.logo .logo__word {
  background-image: linear-gradient(110deg,
    #ffffff 0%, #e9d5ff 15%, #c4b5fd 30%, #a855f7 45%,
    #7c3aed 55%, #a855f7 70%, #e9d5ff 85%, #ffffff 100%);
  background-size: 300% 300%;
  background-position: 0% 50%;
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: var(--fg-1);
  transition: -webkit-text-fill-color 280ms var(--ease-apple);
}
.logo:hover .logo__word {
  -webkit-text-fill-color: transparent;
  animation: glowSlide 2.4s ease-in-out infinite;
}

.navbar__burger {
  background: transparent;
  border: 1px solid var(--line-2);
  border-radius: var(--r-md);
  width: 40px; height: 40px;
  display: grid; place-items: center; gap: 4px;
}
.navbar__burger span {
  display: block;
  width: 16px; height: 1.5px;
  background: var(--fg-1);
  border-radius: 2px;
}
.navbar__mobile {
  background: var(--bg-1);
  border-top: 1px solid var(--line-1);
  padding: 16px var(--gutter);
  display: flex; flex-direction: column;
  animation: slideDown 280ms var(--ease-apple);
}
.navbar__mobile[hidden] { display: none !important; }
@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}
.navbar__mlink {
  padding: 14px 0;
  font-size: 16px;
  color: var(--fg-2);
  border-bottom: 1px solid var(--line-1);
}
.navbar__mlink.is-active { color: var(--accent); }

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--line-1);
  padding: 80px 0 32px;
  background: linear-gradient(180deg, var(--bg-0) 0%, #04060a 100%);
}
.footer__top {
  display: grid;
  grid-template-columns: 1.1fr 1.6fr;
  gap: 64px;
  padding-bottom: 56px;
  border-bottom: 1px solid var(--line-1);
}
@media (max-width: 760px) {
  .footer__top { grid-template-columns: 1fr; gap: 40px; }
}
.footer__tag {
  margin-top: 16px;
  font-size: 14px;
  color: var(--fg-3);
  max-width: 38ch;
  line-height: 1.55;
}
.footer__cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
@media (max-width: 520px) { .footer__cols { grid-template-columns: 1fr 1fr; } }
.footer__h {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-4);
  margin-bottom: 14px;
}
.footer__cols a {
  display: block;
  font-size: 14px;
  color: var(--fg-2);
  padding: 6px 0;
  transition: color var(--dur-fast) var(--ease-apple);
}
.footer__cols a:hover { color: var(--fg-1); }
.footer__bottom {
  margin-top: 24px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- Section header ---------- */
.section-header { margin-bottom: 56px; max-width: 800px; }
.section-header--center { text-align: center; margin-left: auto; margin-right: auto; }
.section-header > * + * { margin-top: 18px; }
.section-header h2 { letter-spacing: var(--tr-tight); }