/* ==========================================================================
   Header — white bar: logo, centred navigation, square Contact button.
   Markup comes from assets/js/components/site-header.js
   ========================================================================== */

site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: block;
}

/* ---------- Topbar ---------- */
.topbar {
  background: var(--deep);
  color: #b9cfd2;
  font-size: 12.5px;
}

.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 36px;
}

.topbar p {
  margin: 0;
}

.topbar__tag {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 14px;
  color: var(--white);
}

.topbar__links {
  display: flex;
  gap: 22px;
}

.topbar__links a {
  color: #b9cfd2;
}

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

/* ---------- Header bar ---------- */
.header {
  background: var(--white);
  transition: box-shadow 0.3s;
}

.header.is-scrolled {
  box-shadow: 0 6px 20px -12px rgba(0, 0, 0, 0.18);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 76px;
}

.header__logo {
  flex: 0 0 auto;
  width: 200px;
}

/* ---------- Navigation ---------- */
.nav__list {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav__item {
  position: relative;
}

.nav__link {
  display: flex;
  align-items: center;
  gap: 6px;
  height: 76px;
  padding: 0 14px;
  color: var(--ink);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.nav__link svg {
  opacity: 0.6;
}

.nav__link {
  position: relative;
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 20px;
  height: 2px;
  background: var(--soil);
  transform: scaleX(0);
  transition: transform 0.25s;
}

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

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

.nav__sub-toggle {
  display: none;
}

.nav__sub {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 300px;
  padding: 8px 0;
  background: var(--white);
  border: 1px solid var(--line);
  border-top: 2px solid var(--soil);
  box-shadow: 0 18px 40px -20px rgba(0, 0, 0, 0.3);
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  transition: opacity 0.2s, transform 0.2s, visibility 0s linear 0.2s;
}

.has-sub:hover > .nav__sub,
.has-sub:focus-within > .nav__sub {
  opacity: 1;
  visibility: visible;
  transform: none;
  transition-delay: 0s;
}

.nav__sub a {
  display: block;
  padding: 9px 22px;
  color: var(--text);
  font-size: 14px;
}

.nav__sub a:hover {
  color: var(--soil);
  background: var(--sand);
}

/* ---------- Actions ---------- */
.header__actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

.header__cta {
  margin-left: 10px;
  padding: 0 28px;
}

.burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0 10px;
  border: 1px solid var(--line);
  background: var(--white);
}

.burger span {
  height: 2px;
  background: var(--ink);
  transition: transform 0.25s, opacity 0.2s;
}

.burger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.burger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.burger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- Responsive ---------- */
@media (max-width: 1100px) {
  .nav__link {
    padding: 0 9px;
  }
}

@media (max-width: 991px) {
  .topbar__links span,
  .nav__link::after {
    display: none;
  }

  .header__inner {
    height: 68px;
  }

  .burger {
    display: flex;
  }

  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    max-height: calc(100vh - 68px);
    overflow-y: auto;
    padding: 6px var(--gutter) 20px;
    background: var(--white);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 20px 30px -20px rgba(0, 0, 0, 0.25);
  }

  .nav.is-open {
    display: block;
  }

  .nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .nav__item {
    border-bottom: 1px solid var(--line);
  }

  .nav__link {
    height: auto;
    padding: 14px 50px 14px 0;
    font-size: 17px;
  }

  .nav__link svg {
    display: none;
  }

  .nav__sub-toggle {
    position: absolute;
    top: 6px;
    right: 0;
    display: grid;
    place-items: center;
    width: 40px;
    height: 40px;
    border: 1px solid var(--line);
    background: var(--white);
    color: var(--ink);
  }

  .nav__sub-toggle svg {
    transition: transform 0.25s;
  }

  .nav__sub-toggle[aria-expanded="true"] svg {
    transform: rotate(180deg);
  }

  .nav__sub {
    position: static;
    display: none;
    min-width: 0;
    margin-bottom: 12px;
    padding: 4px 0;
    border: 0;
    border-left: 2px solid var(--soil);
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .has-sub.is-open > .nav__sub {
    display: block;
  }

  .nav__sub a {
    padding: 7px 16px;
  }
}

@media (max-width: 600px) {
  .topbar__tag {
    display: none;
  }

  .topbar__inner {
    justify-content: center;
  }

  .header__logo {
    width: 160px;
  }

  .header__cta {
    display: none;
  }
}