/* ════════════════════════════
   NAVIGATION
════════════════════════════ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 5.25rem;
  display: flex;
  align-items: center;
  padding: 0 var(--page-margin);
  background: transparent;
  transition: background var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out),
              transform 0.4s var(--ease-out);
}

.nav.hidden {
  transform: translateY(calc(-100%));
}

.nav.scrolled {
  background: rgba(254, 254, 253, 0.5);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.nav__site-logo {
  /*width: 12.1875rem;
  height: 2.8rem;*/
  width: 10rem;
  object-fit: contain;
}

.nav__links {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 3.75rem;
  list-style: none;
  padding: 1.5rem;
  font-weight: 500;
}

.nav__links a {
  font-family: var(--font-body);
  font-size: var(--text-body);
  color: var(--black);
  letter-spacing: 0.025em;
  transition: opacity var(--duration-fast);
}

.nav__links a:hover {
  opacity: 0.5;
}

/* Hamburger (mobile) */
.nav__hamburger {
  display: none;
  margin-left: auto;
  flex-direction: column;
  gap: 5px;
  width: 24px;
  padding: 4px 0;
  cursor: pointer;
}

.nav__hamburger span {
  display: block;
  height: 1.5px;
  background: var(--black);
  border-radius: 2px;
  transition: all 0.3s var(--ease-out);
  transform-origin: center;
}

.nav__hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav__hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav__hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* Mobile drawer */
.nav__mobile-menu {
  display: none;
  position: fixed;
  top: 6.25rem;
  left: 0;
  right: 0;
  background: var(--bg);
  padding: 0 var(--page-margin);
  z-index: 99;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s var(--ease-out), padding 0.4s var(--ease-out);
}

.nav__mobile-menu.open {
  max-height: 20rem;
  padding: 2rem var(--page-margin);
}

.nav__mobile-menu ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.nav__mobile-menu a {
  font-size: 1.25rem;
  color: var(--black);
}

/* ════════════════════════════
   FOOTER
════════════════════════════ */
.footer {
  padding: 0 var(--page-margin);
  border-top: 1px solid var(--border);
}

.footer__inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: 6.25rem 0;
  max-width: var(--content-body);
  margin: 0 auto;
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  max-width: 19.3125rem;
}

.footer__site-logo {
  width: 10rem;
  object-fit: contain;
}

.footer__logo-wordmark {
  height: 1.025rem;
  object-fit: contain;
}

.footer__copyright {
  font-family: var(--font-display);
  font-size: var(--text-body);
  letter-spacing: 0.025em;
  color: var(--black);
}

.footer__links {
  display: flex;
  gap: 1.125rem;
}

.footer__col {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  min-width: 12.5rem;
}

.footer__col-title {
  font-family: var(--font-display);
  font-size: var(--text-body);
  letter-spacing: 0.025em;
  color: var(--mid);
}

.footer__col a {
  font-family: var(--font-body);
  font-size: var(--text-body);
  color: var(--black);
  transition: opacity var(--duration-fast);
}

.footer__col a:hover {
  opacity: 0.5;
}

/* ════════════════════════════
   RESPONSIVE
════════════════════════════ */
@media (max-width: 767px) {
  .nav {
    height: 4.5rem;
  }

  .nav__links {
    display: none;
  }

  .nav__hamburger {
    display: flex;
  }

  .nav__mobile-menu {
    display: block;
    top: 4.5rem;
  }

  .footer__inner {
    flex-direction: column;
    gap: 3rem;
    padding: 3rem 0;
  }

  .footer__links {
    flex-direction: column;
    gap: 2rem;
  }
}

/* ── Animated external link (shared) ── */
.link-out {
  display: inline-flex;
  align-items: baseline;
  gap: 0.5em;
  color: inherit;
  text-decoration: none;
  transition: color var(--duration-fast);
  font-weight: 500;
}

.link-out::after {
  content: '↗';
  font-size: 0.75em;
  opacity: 0.4;
  flex-shrink: 0;
  transition: opacity var(--duration-fast), transform var(--duration-fast) var(--ease-out);
}

.link-out:hover {
  color: var(--black);
}

.link-out:hover::after {
  opacity: 1;
  transform: translate(2px, -2px);
}

/* ── Copy-email tooltip (shared: home + info pages) ── */
.info-copy-email__tooltip {
  position: absolute;
  bottom: calc(100% + 0.5rem);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  background: var(--black);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: var(--text-label);
  letter-spacing: 0.04em;
  padding: 0.3em 0.65em;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--duration-fast), transform var(--duration-fast) var(--ease-out);
}

.is-copied .info-copy-email__tooltip {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}