/* Navigation — transparent over the cinematic hero, solid on scroll */
.nav {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  transition:
    background 0.35s var(--ease-out),
    box-shadow 0.35s var(--ease-out),
    border-color 0.35s var(--ease-out);
  border-bottom: 1px solid transparent;
}

.nav--solid {
  background: rgb(248 245 240 / 0.82);
  backdrop-filter: blur(18px) saturate(1.4);
  border-bottom-color: var(--rule);
  box-shadow: 0 8px 30px rgb(20 26 42 / 0.06);
}

.nav__inner {
  display: flex;
  align-items: center;
  gap: var(--sp-lg);
  width: 100%;
}

.nav__logo {
  position: relative;
  display: block;
  height: 2.1rem;
  flex-shrink: 0;
}

.nav__logo img {
  height: 2.1rem;
  width: auto;
  transition: opacity 0.35s var(--ease-out);
}

.nav__logo-dark {
  position: absolute;
  inset: 0;
  opacity: 0;
}

.nav--solid .nav__logo-dark {
  opacity: 1;
}

.nav--solid .nav__logo-light {
  opacity: 0;
}

.nav__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-lg);
  margin-left: auto;
}

.nav__link {
  position: relative;
  text-decoration: none;
  color: var(--text-on-dark-soft);
  font-size: var(--text-sm);
  font-weight: 500;
  transition: color 0.25s ease;
}

.nav__link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -0.4rem;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: var(--grad-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease-out);
}

.nav__link:hover,
.nav__link.is-active {
  color: var(--text-on-dark);
}

.nav__link:hover::after,
.nav__link.is-active::after {
  transform: scaleX(1);
}

.nav--solid .nav__link {
  color: var(--muted);
}

.nav--solid .nav__link:hover,
.nav--solid .nav__link.is-active {
  color: var(--ink-text);
}

.btn--nav {
  flex-shrink: 0;
  padding: 0.65rem 1.3rem;
}

/* Hamburger toggle (mobile) */
.nav__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  margin-left: auto;
  background: transparent;
  border: 0;
  cursor: pointer;
}

.nav__toggle span {
  display: block;
  width: 1.5rem;
  height: 2px;
  margin: 0 auto;
  border-radius: 2px;
  background: var(--text-on-dark);
  transition:
    transform 0.3s var(--ease-out),
    opacity 0.2s ease,
    background 0.3s ease;
}

.nav--solid .nav__toggle span {
  background: var(--ink-text);
}

.nav--open .nav__toggle span {
  background: var(--text-on-dark);
}

.nav--open .nav__toggle span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav--open .nav__toggle span:nth-child(2) {
  opacity: 0;
}

.nav--open .nav__toggle span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile dropdown panel */
.nav__mobile {
  position: fixed;
  inset: var(--nav-h) 0 auto 0;
  background: var(--space-deep);
  border-bottom: 1px solid var(--rule-dark);
  padding: var(--sp-lg) var(--gutter) var(--sp-xl);
  display: grid;
  gap: var(--sp-lg);
  transform: translateY(-12px);
  opacity: 0;
  visibility: hidden;
  transition:
    transform 0.3s var(--ease-out),
    opacity 0.3s var(--ease-out),
    visibility 0.3s;
}

.nav__mobile.is-open {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.nav__mobile-links {
  display: grid;
  gap: var(--sp-xs);
}

.nav__mobile-link {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 500;
  color: var(--text-on-dark-soft);
  text-decoration: none;
  padding: var(--sp-sm) 0;
  border-bottom: 1px solid var(--rule-dark);
  transition: color 0.2s ease;
}

.nav__mobile-link:hover,
.nav__mobile-link.is-active {
  color: var(--text-on-dark);
}

main {
  padding-top: 0;
}

/* Footer */
.footer {
  position: relative;
  overflow: hidden;
  background: var(--space-deep);
  color: var(--text-on-dark);
  padding: var(--sp-4xl) 0 var(--sp-xl);
}

.footer__glow {
  position: absolute;
  inset: -40% 0 auto 0;
  height: 70%;
  background: var(--grad-mesh-footer);
  pointer-events: none;
}

.footer__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.3fr 1.7fr;
  gap: var(--sp-2xl);
  padding-bottom: var(--sp-2xl);
}

.footer__logo {
  width: 9.5rem;
  margin-bottom: var(--sp-lg);
}

.footer__tagline {
  color: var(--text-on-dark-soft);
  max-width: 24rem;
  margin-bottom: var(--sp-lg);
  line-height: 1.6;
}

.footer__cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-xl);
}

.footer__col {
  display: flex;
  flex-direction: column;
  gap: var(--sp-sm);
}

.footer__label {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: var(--sp-xs);
}

.footer__col a,
.footer__col p {
  color: var(--text-on-dark-soft);
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer__col a:hover {
  color: var(--text-on-dark);
}

.footer__muted {
  color: var(--text-on-dark-faint) !important;
}

.footer__base {
  position: relative;
  display: flex;
  justify-content: space-between;
  gap: var(--sp-md);
  flex-wrap: wrap;
  padding-top: var(--sp-lg);
  border-top: 1px solid var(--rule-dark);
  font-size: var(--text-sm);
  color: var(--text-on-dark-soft);
}

.footer__base strong {
  color: var(--accent-2);
  font-weight: 600;
}

@media (max-width: 860px) {
  .nav__links,
  .btn--nav {
    display: none;
  }

  .nav__toggle {
    display: flex;
  }

  .footer__inner {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--sp-xl);
  }
}

@media (max-width: 560px) {
  .footer__cols {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--sp-lg);
  }

  .footer__base {
    flex-direction: column;
    gap: var(--sp-xs);
  }
}