/* ============ Buttons ============ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--fs-small);
  font-weight: 500;
  letter-spacing: -0.005em;
  line-height: 1.1;
  text-decoration: none;
  border: 1px solid transparent;
  transition:
    background var(--t-fast) var(--ease),
    color var(--t-fast) var(--ease),
    border-color var(--t-fast) var(--ease),
    transform var(--t-fast) var(--ease);
  white-space: nowrap;
}

.btn:hover {
  text-decoration: none;
}

.btn span {
  transition: transform var(--t-fast) var(--ease);
  display: inline-block;
}

.btn:hover span {
  transform: translateX(2px);
}

.btn--primary {
  background: var(--fg);
  color: var(--bg);
  border-color: var(--fg);
}

.btn--primary:hover {
  background: var(--accent-3);
  border-color: var(--accent-3);
  color: var(--fg);
}

.btn--primary.btn--on-dark {
  background: var(--fg-on-dark);
  color: var(--fg);
  border-color: var(--fg-on-dark);
}

.btn--primary.btn--on-dark:hover {
  background: var(--accent-3);
  border-color: var(--accent-3);
  color: var(--fg);
}

.btn--ghost {
  background: transparent;
  color: var(--fg);
  border-color: var(--border);
}

.btn--ghost:hover {
  background: var(--bg-muted);
}

.btn--ghost.btn--on-dark {
  color: var(--fg-on-dark);
  border-color: rgba(255, 255, 255, 0.22);
}

.btn--ghost.btn--on-dark:hover {
  background: rgba(255, 255, 255, 0.08);
}

/* ============ Nav ============ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  height: var(--nav-h);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: var(--space-4);
  padding-inline: var(--gutter);
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid transparent;
  color: var(--fg);
  transition:
    border-color var(--t-base) var(--ease),
    background var(--t-base) var(--ease),
    color var(--t-base) var(--ease);
}

.nav.is-stuck {
  background: rgba(255, 255, 255, 0.94);
}

.nav__brand {
  display: inline-flex;
  align-items: center;
  justify-self: start;
}

.nav__brand-logo {
  height: 26px;
  width: auto;
}

.nav__brand-logo--light {
  display: none;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  justify-self: center;
  padding: var(--space-base);
  background: transparent;
  border-radius: var(--radius-md);
  transition: background var(--t-base) var(--ease);
}

.nav__link {
  display: inline-flex;
  align-items: center;
  font-size: var(--fs-small);
  color: inherit;
  padding: var(--space-2);
  border-radius: var(--radius-md);
  transition: background var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}

.nav__link:hover {
  text-decoration: none;
  background: var(--bg-muted);
}

.nav__link.is-active {
  background: var(--bg-muted);
}

.nav__cta {
  justify-self: end;
  grid-column: 3;
  padding: var(--space-2) var(--space-4);
}

.nav__toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  border-radius: var(--radius-sm);
  justify-self: end;
  grid-column: 3;
  color: inherit;
}

.nav__toggle-bar {
  display: block;
  width: 20px;
  height: 1.5px;
  background: currentColor;
  transition: transform var(--t-fast) var(--ease);
}

body.is-menu-open .nav__toggle-bar:nth-child(1) {
  transform: translateY(3.25px) rotate(45deg);
}

body.is-menu-open .nav__toggle-bar:nth-child(2) {
  transform: translateY(-3.25px) rotate(-45deg);
}

@media (max-width: 720px) {
  .nav__cta {
    display: none;
  }

  .nav__toggle {
    display: inline-flex;
  }

  .nav__list {
    display: none;
  }
}

/* ===== Overlay state: page has a dark hero, nav stays transparent + light
         until body picks up .is-past-hero ===== */
body.has-overlay-hero:not(.is-past-hero) .nav {
  background: transparent;
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
  border-bottom-color: transparent;
  color: var(--fg-on-dark);
}

body.has-overlay-hero:not(.is-past-hero) .nav__brand-logo--dark {
  display: none;
}

body.has-overlay-hero:not(.is-past-hero) .nav__brand-logo--light {
  display: block;
}

@media (min-width: 721px) {
  body.has-overlay-hero:not(.is-past-hero) .nav__link.is-active {
    background: rgba(255, 255, 255, 0.16);
    box-shadow: none;
  }

  body.has-overlay-hero:not(.is-past-hero) .nav__link:hover {
    background: rgba(255, 255, 255, 0.10);
  }
}

body.has-overlay-hero:not(.is-past-hero) .nav__cta {
  background: var(--bg);
  color: var(--fg);
  border-color: var(--bg);
}

body.has-overlay-hero:not(.is-past-hero) .nav__cta:hover {
  background: var(--accent-3);
  color: var(--fg);
  border-color: var(--accent-3);
}

/* ============ Mobile drawer (sibling of .nav) ============ */
.nav-drawer {
  display: none;
}

@media (max-width: 720px) {
  .nav-drawer {
    display: flex;
    flex-direction: column;
    position: fixed;
    inset: 0;
    z-index: 49;
    background: var(--bg-dark);
    color: var(--fg-on-dark);
    padding: calc(var(--nav-h) + var(--space-6)) var(--gutter) var(--space-8);
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition:
      opacity var(--t-base) var(--ease),
      visibility 0s linear var(--t-base);
  }

  body.is-menu-open .nav-drawer {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transition:
      opacity var(--t-base) var(--ease),
      visibility 0s linear 0s;
  }

  .nav-drawer__list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-base);
  }

  .nav-drawer__link {
    display: block;
    padding: var(--space-4);
    color: var(--fg-on-dark);
    font-size: 1.0625rem;
    border-radius: var(--radius-md);
  }

  /* While the drawer is open, force the nav header opaque-dark so the
     close (X) reads against the drawer surface, regardless of overlay-hero. */
  body.is-menu-open .nav {
    background: var(--bg-dark);
    color: var(--fg-on-dark);
    border-bottom-color: transparent;
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
  }

  body.is-menu-open .nav__brand-logo--dark {
    display: none;
  }

  body.is-menu-open .nav__brand-logo--light {
    display: block;
  }
}

/* ============ Marquee ============ */
.marquee {
  background: var(--bg);
  padding-block: var(--space-8);
  overflow: hidden;
}

.marquee__label {
  text-align: center;
  font-size: var(--fs-eyebrow);
  font-weight: 500;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 var(--space-6);
}

.marquee__track {
  display: flex;
  width: max-content;
  animation: marquee calc(var(--marquee-count, 9) * var(--marquee-speed)) linear infinite;
  will-change: transform;
  mask-image: linear-gradient(to right, transparent, #000 6%, #000 94%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, #000 6%, #000 94%, transparent);
}

.marquee:hover .marquee__track {
  animation-play-state: paused;
}

.marquee__list {
  display: flex;
  align-items: center;
  gap: var(--space-32);
  padding-right: var(--space-32);
  list-style: none;
  margin: 0;
}

.marquee__item {
  position: relative;
  display: flex;
  align-items: center;
  flex: 0 0 auto;
}

.marquee__item img {
  height: clamp(1.8rem, 3.15vw, 2.475rem);
  width: auto;
  max-width: none;
  object-fit: contain;
  opacity: 0;
  transition: opacity var(--t-base) var(--ease);
}

.marquee__item:hover img {
  opacity: 1;
}

.marquee__item::before {
  content: "";
  position: absolute;
  inset: 0;
  background-color: var(--fg);
  -webkit-mask: var(--logo) center / contain no-repeat;
  mask: var(--logo) center / contain no-repeat;
  opacity: 0.7;
  transition: opacity var(--t-base) var(--ease);
}

.marquee__item:hover::before {
  opacity: 0;
}

@keyframes marquee {
  from {
    transform: translate3d(0, 0, 0);
  }

  to {
    transform: translate3d(-50%, 0, 0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .marquee__track {
    animation: none;
  }
}

/* ============ Cards ============ */
.cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

@media (min-width: 721px) {
  .cards {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-8);
  background: var(--icon-bg, var(--bg));
  border: 1px solid var(--icon-bg, var(--border));
  border-radius: var(--radius-lg);
  transition: transform var(--t-base) var(--ease), box-shadow var(--t-base) var(--ease);
}

.section--alt .card {
  border-color: transparent;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px -12px rgba(0, 0, 0, 0.15);
}

.card__link::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
}

.card:has(.card__link:focus-visible) {
  outline: 2px solid var(--fg);
  outline-offset: 2px;
}

.card__link:focus-visible {
  outline: none;
}

.card__icon {
  margin-bottom: var(--space-4);
  color: var(--fg);
}

.card__title {
  margin: 0;
}

.card__body {
  color: var(--muted);
  flex: 1;
  font-size: var(--fs-body);
}

.card__link {
  font-size: var(--fs-small);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-2);
}

.card__link:hover {
  text-decoration: none;
}

.card__link span {
  display: inline-block;
  transition: transform var(--t-fast) var(--ease);
}

.card__link:hover span {
  transform: translateX(3px);
}

/* ============ Accordion ============ */
.accordion {
  display: flex;
  flex-direction: column;
}

.accordion__item {
  border-top: 1px solid var(--border);
}

.accordion__item:last-child {
  border-bottom: 1px solid var(--border);
}

.accordion__summary {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--space-6);
  padding-block: var(--space-6);
  cursor: pointer;
  list-style: none;
  font-size: var(--fs-h3);
  font-weight: 500;
  letter-spacing: var(--tracking-tight);
  transition: color var(--t-fast) var(--ease);
}

.accordion__summary::-webkit-details-marker {
  display: none;
}

.accordion__summary:hover {
  color: var(--muted);
}

.accordion__num {
  font-size: var(--fs-small);
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0;
}

.accordion__icon {
  width: 14px;
  height: 14px;
  position: relative;
  color: var(--muted);
}

.accordion__icon::before,
.accordion__icon::after {
  content: "";
  position: absolute;
  inset: 0;
  margin: auto;
  background: currentColor;
}

.accordion__icon::before {
  width: 14px;
  height: 1.5px;
}

.accordion__icon::after {
  width: 1.5px;
  height: 14px;
  transition: transform var(--t-base) var(--ease);
}

details[open] .accordion__icon::after {
  transform: rotate(90deg);
}

.accordion__panel {
  overflow: hidden;
  transition: height var(--t-base) var(--ease);
}

.accordion__body {
  padding-bottom: var(--space-8);
  padding-right: var(--space-8);
  max-width: 60ch;
  color: var(--muted);
  font-size: var(--fs-body);
}

/* ============ Footer ============ */
.footer {
  background: var(--bg-dark);
  color: var(--fg-on-dark);
  padding-top: clamp(3.5rem, 5vw, 5rem);
  padding-bottom: var(--space-6);
}

.footer__inner {
  display: grid;
  gap: var(--space-12);
  grid-template-columns: 1fr;
}

@media (min-width: 721px) {
  .footer__inner {
    grid-template-columns: repeat(3, 1fr);
  }
}

.footer__logo {
  height: 32px;
  width: auto;
  margin-bottom: var(--space-4);
}

.footer__tagline {
  color: var(--muted-on-dark);
  max-width: 32ch;
  font-size: var(--fs-small);
}

.footer__social {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.footer__social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--muted-on-dark);
  transition: color 0.15s ease;
}

.footer__social-link:hover {
  color: var(--fg-on-dark);
}

.footer__heading {
  font-size: var(--fs-eyebrow);
  font-weight: 500;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--muted-on-dark);
  margin: 0 0 var(--space-4);
}

.footer__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  font-size: var(--fs-body);
}

.footer__list a:hover {
  text-decoration: underline;
}

.footer__rule {
  border: 0;
  border-top: 1px solid var(--border-on-dark);
  margin: var(--space-12) 0 var(--space-6);
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
  font-size: var(--fs-eyebrow);
  color: var(--muted-on-dark);
}

.footer__bottom-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6);
}

.footer__bottom-links a:hover {
  text-decoration: underline;
}

/* ============ Contact form ============ */
.contact-form {
  display: flex;
  flex-direction: column;
}

.contact-form__field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.contact-form__label {
  font-size: var(--fs-small);
  font-weight: 500;
  color: var(--fg);
}

.contact-form__input {
  font: inherit;
  color: var(--fg);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-3);
  width: 100%;
  transition:
    border-color var(--t-fast) var(--ease),
    box-shadow var(--t-fast) var(--ease);
}

.contact-form__input:focus-visible {
  outline: none;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.08);
}

.contact-form__textarea {
  resize: vertical;
  min-height: 9rem;
  line-height: var(--leading-body);
}

.contact-form__select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8' fill='none' stroke='%231a1a1a' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M1 1.5 6 6.5 11 1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  padding-right: var(--space-8);
}

.contact-form__submit {
  align-self: flex-end;
}