.container {
  width: min(var(--container), 100% - var(--gutter) * 2);
  margin-inline: auto;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgb(7 13 23 / 65%);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(10px) saturate(130%);
  -webkit-backdrop-filter: blur(10px) saturate(130%);
  transition:
    background-color var(--dur) var(--ease-out),
    border-color var(--dur) var(--ease-out),
    box-shadow var(--dur) var(--ease-out);
}

/* Keeps the nav legible against bright frames while the bar is barely tinted. */
.site-header:not(.is-scrolled) .brand,
.site-header:not(.is-scrolled) .nav__link {
  text-shadow: 0 1px 10px rgb(3 8 18 / 85%);
}

.site-header.is-scrolled {
  background: var(--navy-950);
  border-bottom-color: var(--line);
  box-shadow: 0 6px 20px rgb(3 8 18 / 45%);
}

.site-header.is-scrolled .brand,
.site-header.is-scrolled .nav__link {
  text-shadow: none;
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: var(--sp-5);
  min-height: var(--header-h);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-3);
  margin-right: auto;
  color: var(--white);
  font-weight: 800;
  font-size: 1.0625rem;
  letter-spacing: 0.06em;
  text-decoration: none;
  text-transform: uppercase;
}

.brand:hover {
  color: var(--amber-bright);
}

.brand__mark {
  width: 32px;
  height: 32px;
  border-radius: 9px;
  flex: none;
}

.brand__name span {
  color: var(--amber);
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(var(--sp-4), 2vw, var(--sp-6));
}

.nav__link {
  position: relative;
  padding-block: var(--sp-2);
  color: var(--chalk);
  font-size: var(--fs-sm);
  font-weight: 600;
  text-decoration: none;
}

.nav__link::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  bottom: 0;
  height: 2px;
  background: var(--amber);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur) var(--ease-out);
}

.nav__link:hover,
.nav__link[aria-current="page"] {
  color: var(--white);
}

.nav__link:hover::after,
.nav__link[aria-current="page"]::after {
  transform: scaleX(1);
}

/* ---------- Language switcher ---------- */

.lang {
  position: relative;
  flex: none;
}

.lang__toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-3);
  /* Overrides the UA default of display:list-item, which would stack the
     flag, label and caret and show a marker triangle. */
  list-style: none;
  color: var(--chalk);
  font-size: var(--fs-xs);
  font-weight: 600;
  white-space: nowrap;
  list-style: none;
  cursor: pointer;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-md);
  background: var(--glass);
  transition:
    background-color var(--dur) var(--ease-out),
    border-color var(--dur) var(--ease-out),
    color var(--dur) var(--ease-out);
}

/* Safari renders a disclosure marker on <summary> unless both are cleared. */
.lang__toggle::-webkit-details-marker {
  display: none;
}

.lang__toggle::marker {
  content: "";
}

.lang__toggle:hover,
.lang[open] > .lang__toggle {
  color: var(--white);
  background: var(--glass-hover);
  border-color: var(--line-strong);
}

.lang__toggle:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

.lang__flag {
  width: 21px;
  height: 15px;
  flex: none;
  border-radius: 2px;
  box-shadow: 0 0 0 1px rgb(3 8 18 / 35%);
  object-fit: cover;
}

.lang__caret {
  width: 0;
  height: 0;
  margin-left: var(--sp-1);
  border-inline: 4px solid transparent;
  border-top: 5px solid currentcolor;
  transition: transform var(--dur) var(--ease-out);
}

.lang[open] .lang__caret {
  transform: rotate(180deg);
}

.lang__menu {
  position: absolute;
  top: calc(100% + var(--sp-2));
  right: 0;
  z-index: 10;
  min-width: 11rem;
  padding: var(--sp-2);
  list-style: none;
  background: var(--navy-900);
  border: 1px solid var(--line-strong);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-lg);
}

.lang__option {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-2) var(--sp-3);
  color: var(--chalk);
  font-size: var(--fs-sm);
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--r-sm);
}

.lang__option:hover {
  color: var(--white);
  background: var(--glass-hover);
}

.lang__option.is-current {
  color: var(--amber-bright);
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 10px;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-md);
}

.nav-toggle__bars,
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  display: block;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: transform var(--dur) var(--ease-out);
}

.nav-toggle__bars {
  position: relative;
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  inset-inline: 0;
}

.nav-toggle__bars::before {
  top: -7px;
}
.nav-toggle__bars::after {
  top: 7px;
}

@media (width <= 860px) {
  .nav-toggle {
    display: block;
  }

  /* The burger stays the rightmost control, so the switcher sits before it. */
  .lang {
    order: 1;
    margin-left: auto;
  }

  .nav-toggle {
    order: 2;
  }

  .site-header__inner {
    gap: var(--sp-3);
  }

  .brand {
    margin-right: 0;
  }

  .lang__label {
    display: none;
  }

  .lang__menu .lang__label {
    display: inline;
  }

  .nav {
    position: fixed;
    inset: var(--header-h) 0 auto;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--sp-3) var(--gutter) var(--sp-6);
    background: var(--navy-950);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-lg);
    transform: translateY(-120%);
    visibility: hidden;
    transition:
      transform var(--dur) var(--ease-out),
      visibility var(--dur) var(--ease-out);
  }

  .nav.is-open {
    transform: translateY(0);
    visibility: visible;
  }

  .nav__link {
    padding: var(--sp-4) 0;
    font-size: var(--fs-body-lg);
    border-bottom: 1px solid var(--line);
  }

  .nav__link::after {
    display: none;
  }

  .nav .btn {
    margin-top: var(--sp-5);
    justify-content: center;
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle__bars {
    background: transparent;
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle__bars::before {
    transform: translateY(7px) rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle__bars::after {
    transform: translateY(-7px) rotate(-45deg);
  }
}

/* ---------- Sections ---------- */

.section {
  padding-block: var(--section-y);
}

.section--tight {
  padding-block: calc(var(--section-y) * 0.62);
}

.section--alt {
  background: var(--navy-850);
  border-block: 1px solid var(--line);
}

.section__head {
  max-width: 62ch;
  margin-bottom: clamp(var(--sp-6), 4vw, var(--sp-8));
}

.section__head--center {
  margin-inline: auto;
  text-align: center;
}

.section__lead {
  margin-top: var(--sp-4);
  color: var(--chalk-dim);
  font-size: var(--fs-body-lg);
}

.eyebrow {
  display: block;
  margin-bottom: var(--sp-3);
  color: var(--game-accent);
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

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

.site-footer {
  padding-block: var(--sp-8) var(--sp-6);
  background: var(--navy-950);
  border-top: 1px solid var(--line);
  font-size: var(--fs-sm);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: var(--sp-6) var(--sp-5);
}

.footer-col h2 {
  margin-bottom: var(--sp-4);
  color: var(--chalk);
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.footer-col ul {
  display: grid;
  gap: var(--sp-2);
}

.footer-col a {
  color: var(--chalk-dim);
  text-decoration: none;
}

.footer-col a:hover {
  color: var(--amber-bright);
}

.footer-col address {
  color: var(--chalk-dim);
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-3);
  margin-bottom: var(--sp-4);
  color: var(--white);
  font-weight: 800;
  letter-spacing: 0.06em;
  text-decoration: none;
  text-transform: uppercase;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3) var(--sp-5);
  align-items: center;
  justify-content: space-between;
  margin-top: var(--sp-7);
  padding-top: var(--sp-5);
  border-top: 1px solid var(--line);
  color: var(--chalk-dim);
  font-size: var(--fs-xs);
}

.footer-note {
  max-width: 68ch;
  margin-top: var(--sp-4);
  color: rgb(151 168 192 / 70%);
  font-size: var(--fs-xs);
  line-height: 1.55;
}