/* ==========================================================================
   Layout: header, navigation (desktop pill + mobile panel), footer
   ========================================================================== */

:root {
  --header-pad: clamp(0.875rem, 1.1vw, 1.25rem);
  --header-row: 3rem;
  --header-space: calc(var(--header-row) + var(--header-pad) + env(safe-area-inset-top));
}

/* Header ----------------------------------------------------------------- */

.site-header {
  position: absolute;
  inset: 0 0 auto;
  z-index: 50;
  padding-top: calc(var(--header-pad) + env(safe-area-inset-top));
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: var(--header-row);
}

/* Desktop pill navigation ------------------------------------------------ */

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 0.125rem;
  padding: 0.1875rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-pill);
  background: rgba(0, 0, 0, 0.35);
}

.site-nav__list a {
  display: inline-flex;
  align-items: center;
  min-height: 2.5rem;
  padding: 0 1.05rem;
  border-radius: var(--radius-pill);
  color: var(--text-soft);
  font-size: clamp(0.875rem, 0.92vw, 0.95rem);
  line-height: 1;
  white-space: nowrap;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.site-nav__list a:hover {
  background: rgba(255, 255, 255, 0.07);
  color: #fff;
}

.site-nav__list a:focus-visible {
  outline-offset: -2px;
}

/* Menu toggle (mobile only) ---------------------------------------------- */

.menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  min-width: 2.75rem;
  height: 2.75rem;
  min-height: 2.75rem;
  padding: 0;
  border: 0;
  border-radius: 0.75rem;
  background: transparent;
  color: #fff;
}

.menu-toggle__icon {
  position: relative;
  width: 1.125rem;
  height: 0.625rem;
}

.menu-toggle__icon::before,
.menu-toggle__icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 1.5px;
  border-radius: 1px;
  background: currentColor;
  transition: transform var(--dur) var(--ease), top var(--dur) var(--ease);
}

.menu-toggle__icon::before {
  top: 0;
}

.menu-toggle__icon::after {
  top: calc(100% - 1.5px);
}

.menu-toggle[aria-expanded="true"] .menu-toggle__icon::before {
  top: calc(50% - 0.75px);
  transform: rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-toggle__icon::after {
  top: calc(50% - 0.75px);
  transform: rotate(-45deg);
}

/* Mobile navigation ------------------------------------------------------ */

@media (max-width: 767.98px) {
  :root {
    --header-row: 2.75rem;
  }

  /* Without JavaScript the links stay visible as a wrapped row */
  html:not(.js) .site-header__inner {
    flex-wrap: wrap;
  }

  html:not(.js) .site-nav {
    width: 100%;
  }

  html:not(.js) .site-nav__list {
    flex-wrap: wrap;
    justify-content: center;
    border-radius: 1.5rem;
  }

  html:not(.js) .hero {
    padding-top: calc(var(--header-space) + 6.5rem);
  }

  .js .menu-toggle {
    display: inline-flex;
    position: relative;
    z-index: 2;
  }

  .js .site-nav {
    position: fixed;
    inset: 0;
    z-index: 1;
    display: flex;
    flex-direction: column;
    padding:
      calc(var(--header-space) + 2rem)
      max(var(--gutter), env(safe-area-inset-right))
      calc(2rem + env(safe-area-inset-bottom))
      max(var(--gutter), env(safe-area-inset-left));
    background:
      radial-gradient(120% 60% at 100% 0%, rgba(79, 141, 255, 0.14), transparent 60%),
      #000;
    overflow-y: auto;
    visibility: hidden;
    opacity: 0;
    transition: opacity 240ms var(--ease), visibility 0s linear 240ms;
  }

  .js .site-nav.is-open {
    visibility: visible;
    opacity: 1;
    transition: opacity 240ms var(--ease), visibility 0s linear 0s;
  }

  .js .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: none;
  }

  .js .site-nav__list li {
    border-bottom: 1px solid var(--line);
  }

  .js .site-nav__list a {
    display: flex;
    min-height: 4rem;
    padding: 0;
    border-radius: 0;
    font-size: clamp(1.625rem, 7vw, 2rem);
    font-weight: 400;
    letter-spacing: -0.03em;
    color: #fff;
  }

  .js .site-nav__list a:hover,
  .js .site-nav__list a:active {
    background: none;
    color: #fff;
  }

  .js .nav-callback:hover,
  .js .nav-callback:active {
    background: none;
  }

  .js .nav-callback {
    justify-content: flex-start;
    width: 100%;
    min-height: 4rem;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: none;
    color: var(--cyan-soft);
    font-size: clamp(1.625rem, 7vw, 2rem);
    font-weight: 400;
    letter-spacing: -0.03em;
    line-height: 1;
  }

  .js .nav-callback:hover,
  .js .nav-callback:active {
    color: var(--cyan-soft);
  }

  .js .nav-callback svg {
    display: none;
  }

  .js .site-nav__list a,
  .js .nav-callback {
    -webkit-tap-highlight-color: transparent;
  }

  .js .site-nav__list a:focus,
  .js .site-nav__list a:focus-visible,
  .js .nav-callback:focus,
  .js .nav-callback:focus-visible {
    outline: none;
    background: none;
    box-shadow: none;
  }

  .js .site-nav__list a:focus-visible,
  .js .nav-callback:focus-visible {
    text-decoration: underline;
    text-underline-offset: 0.16em;
    text-decoration-thickness: 1px;
  }

  .js .site-header .wordmark {
    position: relative;
    z-index: 2;
  }

  /* Keep the close control in view even if the page was scrolled before opening */
  .menu-open .site-header {
    position: fixed;
  }
}

/* Footer ----------------------------------------------------------------- */

.site-footer {
  border-top: 1px solid var(--line);
  padding-block: clamp(2.5rem, 5vw, 4rem) calc(clamp(2rem, 4vw, 3rem) + env(safe-area-inset-bottom));
  background: var(--bg);
}

.site-footer__inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem 3rem;
  align-items: start;
}

.site-footer__desc {
  max-width: 24rem;
  margin-top: 0.5rem;
  color: var(--muted);
  font-size: 0.9375rem;
}

.site-footer__nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.75rem;
}

.site-footer__nav a {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  color: var(--text-soft);
  font-size: 0.9375rem;
  transition: color var(--dur) var(--ease);
}

.site-footer__nav a:hover {
  color: var(--cyan-soft);
}

.site-footer__copy {
  grid-column: 1 / -1;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  color: #7d858f;
  font-size: 0.8125rem;
}

@media (max-width: 767.98px) {
  .site-footer__inner {
    grid-template-columns: 1fr;
  }
}