/* ==========================================================================
   Layout — container, section heads, header, menu & footer
   ========================================================================== */

.container {
  width: 100%;
  max-width: calc(var(--container) + var(--gutter) * 2);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* Section heads
   ========================================================================== */

.section-head {
  display: grid;
  gap: 20px;
  margin-bottom: clamp(40px, calc(40px + 80 * (100vw - 393px) / 1527), 120px);
}

.section-head--center {
  justify-items: center;
  text-align: center;
}

.section-head--center .lead {
  max-width: 789px;
}

@media (min-width: 1024px) {
  .section-head--split {
    grid-template-columns: 1fr minmax(0, 557px);
    align-items: end;
    gap: 40px;
  }

  .section-head__aside {
    padding-bottom: 6px;
  }

  .section-head--end {
    align-items: end;
  }
}

/* Header
   ========================================================================== */

.site-header {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  z-index: var(--header-z);
  pointer-events: none;
}

.site-header__bar {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: var(--header-h);
  padding: 0 var(--gutter);
  padding-inline: clamp(20px, calc(20px + 20 * (100vw - 393px) / 1527), 40px);
  pointer-events: auto;
  transition: height 0.5s var(--ease-out), transform 0.6s var(--ease-out);
}

.site-header__bar::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: rgba(237, 243, 247, 0.82);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  box-shadow: 0 1px 0 rgba(2, 25, 48, 0.06);
  opacity: 0;
  transition: opacity 0.4s;
}

.site-header.is-scrolled .site-header__bar {
  height: clamp(72px, calc(72px + 24 * (100vw - 393px) / 1527), 96px);
}

.site-header.is-scrolled .site-header__bar::before {
  opacity: 1;
}

.site-header.is-hidden .site-header__bar {
  transform: translateY(-100%);
}

.site-header.is-menu-open .site-header__bar::before {
  opacity: 0;
}

.site-header__logo {
  position: relative;
  display: block;
  width: clamp(162px, calc(162px + 27 * (100vw - 393px) / 1527), 189px);
}

.site-header__logo img {
  width: 100%;
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: clamp(12px, calc(12px + 12 * (100vw - 393px) / 1527), 24px);
}

.site-nav {
  display: none;
}

@media (max-width: 380px) {
  .site-header__cta {
    display: none;
  }
}

/* Inline nav only where all six links fit on one line beside the centred logo */
@media (min-width: 1280px) {
  .site-header__bar {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  }

  .site-nav {
    display: block;
  }

  .site-header__actions {
    justify-self: end;
  }
}

.site-nav__list {
  display: flex;
  gap: clamp(16px, calc(16px + 16 * (100vw - 1280px) / 640), 32px);
}

.site-nav__link {
  position: relative;
  display: inline-block;
  padding: 6px 0;
  font-size: clamp(16px, calc(16px + 4 * (100vw - 1280px) / 640), 20px);
  white-space: nowrap;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--color-muted);
  transition: color 0.3s;
}

.site-nav__link::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 1.5px;
  border-radius: 2px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: 100% 50%;
  transition: transform 0.5s var(--ease-out);
}

.site-nav__link:hover,
.site-nav__link.is-active {
  color: var(--color-black);
}

.site-nav__link.is-active {
  font-weight: 500;
}

.site-nav__link:hover::after {
  transform: scaleX(1);
  transform-origin: 0 50%;
}

/* Menu panel
   Link size follows the viewport height as well as its width, so all seven
   links plus the actions always fit without scrolling on any screen. */

.menu {
  --menu-fs: clamp(30px, min(9vw, calc((100vh - var(--header-h) - 230px) / 8.4)), 88px);

  position: fixed;
  inset: 0;
  z-index: 1;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: calc(var(--header-h) + 8px) clamp(20px, calc(20px + 20 * (100vw - 393px) / 1527), 40px) clamp(24px, 4vh, 48px);
  background: var(--color-bg);
  clip-path: inset(0 0 100% 0);
  visibility: hidden;
  pointer-events: auto;
  transition: clip-path 0.9s var(--ease-in-out), visibility 0s 0.9s;
}

@supports (height: 100dvh) {
  .menu {
    --menu-fs: clamp(30px, min(9vw, calc((100dvh - var(--header-h) - 230px) / 8.4)), 88px);
  }
}

.menu.is-open {
  clip-path: inset(0 0 0 0);
  visibility: visible;
  transition: clip-path 0.9s var(--ease-in-out), visibility 0s;
}

.menu__inner {
  display: flex;
  flex: 1;
  flex-direction: column;
  justify-content: space-between;
  gap: 32px;
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
}

.menu__list {
  display: grid;
  gap: 0.12em;
  font-size: var(--menu-fs);
}

.menu__link {
  display: inline-flex;
  align-items: flex-start;
  gap: 0.3em;
  overflow: hidden;
  font-size: 1em;
  font-weight: 500;
  line-height: 1.06;
  letter-spacing: -0.03em;
  color: var(--color-navy);
}

.menu__link span,
.menu__link sup {
  display: inline-block;
  transform: translateY(110%);
  transition: transform 0.8s var(--ease-out), color 0.3s;
}

.menu__link sup {
  padding-top: 0.35em;
  font-size: max(11px, 0.2em);
  font-weight: 400;
  letter-spacing: 0.02em;
  color: rgba(2, 25, 48, 0.45);
}

.menu__link:hover span {
  color: rgba(2, 25, 48, 0.55);
}

.menu.is-open .menu__link span,
.menu.is-open .menu__link sup {
  transform: none;
}

.menu.is-open .menu__list li:nth-child(1) * { transition-delay: 0.25s; }
.menu.is-open .menu__list li:nth-child(2) * { transition-delay: 0.3s; }
.menu.is-open .menu__list li:nth-child(3) * { transition-delay: 0.35s; }
.menu.is-open .menu__list li:nth-child(4) * { transition-delay: 0.4s; }
.menu.is-open .menu__list li:nth-child(5) * { transition-delay: 0.45s; }
.menu.is-open .menu__list li:nth-child(6) * { transition-delay: 0.5s; }
.menu.is-open .menu__list li:nth-child(7) * { transition-delay: 0.55s; }

.menu__aside {
  display: grid;
  gap: 16px;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s, transform 0.8s var(--ease-out);
}

.menu.is-open .menu__aside {
  opacity: 1;
  transform: none;
  transition-delay: 0.55s;
}

.menu__lead {
  color: var(--color-muted);
}

.menu__actions {
  display: grid;
  gap: 12px;
}

@media (min-width: 600px) {
  .menu__actions {
    display: flex;
    flex-wrap: wrap;
  }
}

@media (min-width: 1024px) {
  /* Actions sit beside the links here, so the links can use the full height */
  .menu {
    --menu-fs: clamp(30px, min(7vw, calc((100vh - var(--header-h) - 80px) / 8.4)), 96px);
  }

  @supports (height: 100dvh) {
    .menu {
      --menu-fs: clamp(30px, min(7vw, calc((100dvh - var(--header-h) - 80px) / 8.4)), 96px);
    }
  }

  .menu__inner {
    flex-direction: row;
    align-items: flex-end;
  }

  .menu__aside {
    flex: none;
    justify-items: start;
    max-width: 560px;
  }

  .menu__actions .btn {
    min-height: 64px;
    font-size: 18px;
  }
}

/* The inline nav would duplicate the panel's links while it's open */
.site-header.is-menu-open .site-nav {
  opacity: 0;
  visibility: hidden;
}

.site-nav {
  transition: opacity 0.4s, visibility 0.4s;
}

html.menu-open {
  overflow: hidden;
}

/* Footer
   ========================================================================== */

.site-footer {
  color: var(--color-white);
  background: var(--color-navy);
}

.site-footer__top {
  display: grid;
  gap: 24px;
  padding: clamp(40px, calc(40px + 116 * (100vw - 393px) / 1527), 156px) 0 clamp(32px, calc(32px + 87 * (100vw - 393px) / 1527), 119px);
}

.site-footer__title {
  font-size: var(--fs-loop);
  line-height: 0.96;
  letter-spacing: -0.02em;
  color: var(--color-white);
}

.site-footer__tagline {
  margin-top: clamp(16px, calc(16px + 38 * (100vw - 393px) / 1527), 54px);
  font-size: 18px;
  font-weight: 500;
  line-height: 1.3;
  letter-spacing: 0.02em;
}

@media (max-width: 1023px) {
  .site-footer__tagline {
    font-weight: 400;
    color: var(--color-muted-inverse);
  }
}

.subscribe {
  width: 100%;
  max-width: 719px;
}

.subscribe__field {
  display: flex;
  align-items: center;
  gap: 8px;
  height: clamp(54px, calc(54px + 26 * (100vw - 393px) / 1527), 80px);
  padding: clamp(7px, calc(7px + 4 * (100vw - 393px) / 1527), 11px);
  padding-left: clamp(18px, calc(18px + 18 * (100vw - 393px) / 1527), 36px);
  border: 1px solid transparent;
  border-radius: 62px;
  background: rgba(255, 255, 255, 0.06);
  transition: border-color 0.3s, background-color 0.3s;
}

.subscribe__field:focus-within {
  border-color: rgba(255, 255, 255, 0.25);
  background: rgba(255, 255, 255, 0.1);
}

.subscribe.is-invalid .subscribe__field {
  border-color: var(--color-red);
}

.subscribe__input {
  flex: 1;
  min-width: 0;
  height: 100%;
  border: 0;
  font-size: var(--fs-foot-link);
  letter-spacing: 0.02em;
  color: var(--color-white);
  background: none;
}

.subscribe__input::placeholder {
  color: rgba(255, 255, 255, 0.6);
}

.subscribe__input:focus {
  outline: none;
}

.subscribe__submit {
  flex: none;
  height: 100%;
  min-width: clamp(75px, calc(75px + 118 * (100vw - 393px) / 1527), 193px);
  padding: 0 20px;
  border-radius: 62px;
  font-size: var(--fs-foot-link);
  font-weight: 500;
  color: var(--color-navy);
  background: var(--color-white);
  transition: transform 0.4s var(--ease-out), background-color 0.3s;
}

.subscribe__submit:hover {
  background: var(--color-panel);
}

.subscribe__submit:active {
  transform: scale(0.96);
}

.subscribe__status {
  min-height: 1.4em;
  margin-top: 10px;
  padding-left: 20px;
  font-size: 15px;
}

.subscribe__status[data-type="error"] {
  color: #ff8a8a;
}

.subscribe__status[data-type="success"] {
  color: #8be0b5;
}

.site-footer__main {
  display: grid;
  gap: 40px;
  padding-bottom: 40px;
}

.site-footer__brand {
  display: contents;
}

.site-footer__logo,
.site-footer__desc {
  display: none;
}

.site-footer__brand .social {
  order: 2;
}

.site-footer__nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px 20px;
}

.site-footer__heading {
  margin-bottom: 14px;
  font-size: var(--fs-foot-head);
  font-weight: 500;
  line-height: 1.35;
  letter-spacing: 0.02em;
}

.site-footer__col li + li {
  margin-top: clamp(4px, calc(4px + 10 * (100vw - 393px) / 1527), 14px);
}

.site-footer__col a {
  position: relative;
  font-size: var(--fs-foot-link);
  line-height: 1.66;
  letter-spacing: 0.02em;
  color: rgba(255, 255, 255, 0.68);
  transition: color 0.3s;
}

.site-footer__col a:hover {
  color: var(--color-white);
}

.site-footer__bottom {
  padding: 18px var(--gutter) 24px;
  border-top: 1px solid rgba(217, 217, 217, 0.25);
  text-align: center;
}

.site-footer__copy {
  font-size: clamp(14px, calc(14px + 4 * (100vw - 393px) / 1527), 18px);
  font-weight: 500;
  letter-spacing: 0.02em;
}

@media (min-width: 1024px) {
  .site-footer__top {
    grid-template-columns: 1fr minmax(0, 719px);
    align-items: center;
    border-bottom: 1px solid rgba(217, 217, 217, 0.25);
  }

  .subscribe__status {
    position: absolute;
  }

  .subscribe {
    position: relative;
  }

  .site-footer__main {
    grid-template-columns: 1fr minmax(0, 866px);
    padding: clamp(40px, calc(40px + 33 * (100vw - 1024px) / 896), 73px) 0 clamp(48px, calc(48px + 25 * (100vw - 1024px) / 896), 73px);
  }

  .site-footer__brand {
    display: block;
  }

  .site-footer__logo {
    display: block;
    width: 192px;
  }

  .site-footer__desc {
    display: block;
    margin: 32px 0 clamp(40px, calc(40px + 56 * (100vw - 1024px) / 896), 96px);
    font-size: 18px;
    font-weight: 500;
    line-height: 1.66;
    letter-spacing: 0.02em;
    color: rgba(255, 255, 255, 0.6);
  }

  .site-footer__nav {
    grid-template-columns: repeat(3, 1fr);
  }
}