/* ==========================================================================
   Layout — container, grid, header, footer, sections
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.container--text {
  max-width: var(--container-text);
}

.section {
  padding-block: clamp(5rem, 10vw, 10rem);
  position: relative;
}

.section--lg {
  padding-block: clamp(6rem, 14vw, 14rem);
}

.section--ink {
  background: var(--black);
  color: var(--white);
}

.section--paper {
  background: var(--paper);
}

.section--off {
  background: var(--off-white);
}

@media (min-width: 768px) {
  :root {
    --gutter: 2.5rem;
  }
}

@media (min-width: 1280px) {
  :root {
    --gutter: 4rem;
  }
}

/* ==========================================================================
   Scroll progress bar
   ========================================================================== */

.scroll-progress {
  position: fixed;
  inset: 0 0 auto 0;
  height: 2px;
  background: transparent;
  z-index: var(--z-progress);
  pointer-events: none;
}

.scroll-progress__bar {
  height: 100%;
  width: 0%;
  background: var(--black);
  transform-origin: left;
  transition: width 80ms linear;
}

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

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--header-h);
  z-index: var(--z-header);
  display: flex;
  align-items: center;
  background: transparent;
  transition: background var(--transition), border-color var(--transition);
  border-bottom: 1px solid transparent;
  mix-blend-mode: normal;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
  gap: 2rem;
}

.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.88);
  -webkit-backdrop-filter: saturate(160%) blur(16px);
  backdrop-filter: saturate(160%) blur(16px);
  border-bottom-color: var(--line);
}

/* When the mobile menu is open, lift the header above it so the close
   button (X) remains visible and clickable */
body.no-scroll .site-header {
  z-index: calc(var(--z-menu) + 5);
  background: transparent;
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
  border-bottom-color: transparent;
}

.logo {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  z-index: 2;
}

.logo__img {
  height: 36px;
  width: auto;
  transition: opacity var(--transition);
}

.logo__img--white {
  display: none;
}

body.no-scroll .logo__img--dark {
  display: none;
}

body.no-scroll .logo__img--white {
  display: block;
}

.nav {
  display: none;
}

@media (min-width: 1024px) {
  .nav {
    display: flex;
    align-items: center;
    gap: 2.5rem;
  }
}

.nav__link {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--black);
  position: relative;
  padding: 0.5rem 0;
  transition: opacity var(--transition);
}

.nav__link:hover {
  opacity: 0.5;
}

.nav__link.is-active::after {
  content: "";
  position: absolute;
  inset: auto 0 -2px 0;
  height: 2px;
  background: currentColor;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-shrink: 0;
}

@media (max-width: 1023px) {
  /* Hide the header CTA on mobile/tablet — it's available in the open menu */
  .header-actions > .btn {
    display: none;
  }

  .header-actions {
    gap: 0;
  }

  .site-header__inner {
    gap: 1rem;
  }

  .logo__img {
    height: 32px;
  }
}

/* Mobile menu toggle */
.menu-toggle {
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
}

@media (min-width: 1024px) {
  .menu-toggle {
    display: none;
  }
}

.menu-toggle__icon {
  position: relative;
  width: 22px;
  height: 14px;
}

.menu-toggle__icon::before,
.menu-toggle__icon::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 1.5px;
  background: var(--black);
  transition: transform var(--transition), top var(--transition),
    bottom var(--transition);
}

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

.menu-toggle__icon::after {
  bottom: 0;
}

.menu-toggle.is-open {
  position: relative;
  z-index: calc(var(--z-menu) + 1);
}

.menu-toggle.is-open .menu-toggle__icon::before {
  top: calc(50% - 0.75px);
  transform: rotate(45deg);
  background: var(--white);
}

.menu-toggle.is-open .menu-toggle__icon::after {
  bottom: auto;
  top: calc(50% - 0.75px);
  transform: rotate(-45deg);
  background: var(--white);
}

/* Mobile menu */
.mobile-menu {
  position: fixed;
  inset: 0;
  background: var(--black);
  color: var(--white);
  z-index: var(--z-menu);
  display: flex;
  flex-direction: column;
  padding: var(--header-h) var(--gutter) 2rem;
  transform: translateY(-100%);
  transition: transform 500ms cubic-bezier(0.65, 0, 0.35, 1);
  overflow-y: auto;
}

.mobile-menu.is-open {
  transform: translateY(0);
}

@media (min-width: 1024px) {
  .mobile-menu {
    display: none !important;
  }
}

.mobile-menu__nav {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-top: 3rem;
}

.mobile-menu__link {
  font-size: clamp(2rem, 8vw, 3rem);
  font-weight: 900;
  line-height: 0.95;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  color: var(--white);
}

.mobile-menu__cta {
  margin-top: 3rem;
}

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

.site-footer {
  background: var(--black);
  color: var(--white);
  padding: clamp(4rem, 8vw, 6rem) 0 2.5rem;
  position: relative;
  overflow: hidden;
}

.footer-top {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  padding-bottom: 4rem;
  border-bottom: 1px solid var(--line-dark);
}

@media (min-width: 768px) {
  .footer-top {
    grid-template-columns: 1.5fr 1fr;
    gap: 4rem;
    align-items: end;
  }
}

.footer-top__title {
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 0.95;
  text-transform: uppercase;
  color: var(--white);
  max-width: 14ch;
}

.footer-top__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.footer-grid {
  display: grid;
  gap: 3rem;
  grid-template-columns: 1fr;
  padding-block: 4rem;
  border-bottom: 1px solid var(--line-dark);
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 1.6fr 1fr 1fr;
  }
}

.footer-brand img {
  height: 48px;
  margin-bottom: 1.5rem;
  filter: invert(1);
}

.footer-brand p {
  color: var(--grey-300);
  font-size: 0.9375rem;
  line-height: 1.6;
  max-width: 380px;
}

.footer-col__title {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--grey-300);
  margin-bottom: 1.25rem;
}

.footer-col__list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.footer-col__list a {
  color: var(--white);
  font-size: 0.95rem;
  transition: opacity var(--transition);
}

.footer-col__list a:hover {
  opacity: 0.55;
}

.footer-bottom {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  padding-top: 2rem;
  font-size: 0.8125rem;
  color: var(--grey-300);
  align-items: center;
}

@media (min-width: 768px) {
  .footer-bottom {
    grid-template-columns: 1fr auto 1fr;
  }
}

.footer-bottom__copy {
  text-align: left;
}

.footer-bottom__rights {
  text-align: left;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.7rem;
  color: var(--grey-400);
}

@media (min-width: 768px) {
  .footer-bottom__rights {
    text-align: right;
  }
}

.footer-bottom .socials {
  justify-content: flex-start;
}

@media (min-width: 768px) {
  .footer-bottom .socials {
    justify-content: center;
  }
}

.socials {
  display: flex;
  gap: 0.5rem;
}

.social-link {
  display: inline-flex;
  width: 38px;
  height: 38px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line-dark);
  border-radius: 999px;
  color: var(--white);
  transition: background var(--transition), color var(--transition),
    border-color var(--transition);
}

.social-link:hover {
  background: var(--white);
  color: var(--black);
  border-color: var(--white);
}

.social-link svg {
  width: 16px;
  height: 16px;
}