/* Header, navigation, and dropdown */
.site-header {
  position: sticky;
  top: 0;
  width: 100%;
  background: linear-gradient(135deg, rgba(250, 250, 250, 0.95), rgba(220, 220, 220, 0.3));
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
  z-index: 1500;
}

.site-header__inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--space-3);
  height: 88px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--text);
}

.brand__logo {
  width: 56px;
  height: 56px;
  object-fit: contain;
}

.brand__text {
  display: grid;
  gap: 3px;
  text-align: left;
  justify-items: start;
  align-items: start;
}

.brand__name {
  text-transform: uppercase;
  letter-spacing: 0.22em;
  font-weight: 600;
  font-size: 14px;
  transform: translateY(4px);
}

.brand__role {
  font-size: 13px;
  font-style: italic;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.brand__areas {
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--muted);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: center;
  justify-self: center;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav__item {
  position: relative;
}

.nav__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 6px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 13px;
  color: var(--text);
  border-radius: 999px;
  transition: color var(--transition), background-color var(--transition);
}

.nav__link:hover,
.nav__link:focus-visible {
  color: var(--text);
}

.nav__link:focus-visible {
  outline: 2px solid var(--text);
  outline-offset: 2px;
  background: rgba(0, 0, 0, 0.08);
}

.nav__link--button {
  background: none;
  border: none;
  cursor: pointer;
}

.nav__chevron {
  width: 12px;
  height: 12px;
  transition: transform var(--transition);
}

.nav__item--services.is-open .nav__chevron {
  transform: rotate(180deg);
}

/* Dropdown */
.nav__item--services {
  position: relative;
}

.dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translate(-50%, 8px);
  width: min(520px, 90vw);
  background: linear-gradient(135deg, rgba(205, 205, 205, 0.98), rgba(160, 160, 160, 0.92));
  color: var(--text);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(17, 17, 17, 0.12);
  box-shadow: var(--shadow-strong);
  padding: var(--space-3);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 180ms ease, transform 180ms ease;
}

.dropdown__notch {
  position: absolute;
  top: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 16px;
  height: 8px;
  background: transparent;
}

.dropdown__notch::before {
  content: '';
  position: absolute;
  inset: 0;
  margin: auto;
  width: 12px;
  height: 12px;
  background: linear-gradient(135deg, rgba(205, 205, 205, 0.98), rgba(160, 160, 160, 0.92));
  border-left: 1px solid rgba(17, 17, 17, 0.12);
  border-top: 1px solid rgba(17, 17, 17, 0.12);
  transform: rotate(45deg);
  border-radius: 4px 0 0 0;
  box-shadow: -8px 8px 20px rgba(0, 0, 0, 0.2);
}

.dropdown__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.dropdown__item {
  display: grid;
  grid-template-columns: 48px 1fr;
  align-items: center;
  gap: 12px;
  padding: 12px;
  border-radius: var(--radius-sm);
  position: relative;
  overflow: hidden;
  transition: background-color var(--transition), transform var(--transition);
}

.dropdown__item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--wine), var(--rose));
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--transition);
}

.dropdown__item:hover,
.dropdown__item:focus-within {
  background: rgba(0, 0, 0, 0.06);
  transform: translateX(2px);
}

.dropdown__item:hover::before,
.dropdown__item:focus-within::before {
  transform: scaleY(1);
}

.dropdown__icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid rgba(17, 17, 17, 0.15);
  display: grid;
  place-items: center;
  background: rgba(0, 0, 0, 0.08);
}

.dropdown__title {
  font-weight: 600;
  color: var(--text);
}

.dropdown__content {
  display: grid;
  gap: 4px;
}

.dropdown__desc {
  color: var(--muted);
  font-size: 14px;
}

@media (min-width: 900px) {
  .nav__item--services::after {
    content: '';
    position: absolute;
    left: -12px;
    right: -12px;
    top: 100%;
    height: 12px;
  }

  .nav__item--services:hover .dropdown,
  .nav__item--services:focus-within .dropdown,
  .nav__item--services.is-open .dropdown {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translate(-50%, 12px);
  }
}

@media (max-width: 899px) {
  .dropdown {
    position: relative;
    inset: 0;
    transform: none;
    background: linear-gradient(135deg, rgba(205, 205, 205, 0.99), rgba(160, 160, 160, 0.94));
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    box-shadow: none;
    border: 1px solid rgba(17, 17, 17, 0.12);
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 200ms ease;
  }

  .dropdown__list {
    padding: var(--space-2);
  }

  .dropdown__notch {
    display: none;
  }

  .nav__item--services.is-open .dropdown {
    max-height: 720px;
    margin-top: 10px;
  }
}

/* Header actions */
.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  justify-self: end;
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 13px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid rgba(17, 17, 17, 0.2);
  background: rgba(255, 255, 255, 0.7);
}

.lang-switch__link {
  color: var(--text);
  opacity: 0.8;
  text-decoration: none;
  transition: opacity var(--transition), color var(--transition);
}

.lang-switch__link:hover,
.lang-switch__link:focus-visible {
  opacity: 1;
  color: var(--text);
}

.lang-switch__link.is-active {
  opacity: 1;
  font-weight: 600;
}

.lang-switch__divider {
  opacity: 0.6;
}

.icon-btn {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.06);
  display: grid;
  place-items: center;
  transition: border-color var(--transition), background-color var(--transition), transform var(--transition);
}

.icon-btn:hover,
.icon-btn:focus-visible {
  border-color: rgba(0, 0, 0, 0.45);
  background: rgba(0, 0, 0, 0.12);
  transform: translateY(-2px);
}

.icon-btn:focus-visible {
  outline: 2px solid var(--text);
  outline-offset: 3px;
}

.nav__cta-mobile {
  display: none;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.06);
  align-items: center;
  justify-content: center;
  gap: 4px;
  flex-direction: column;
  transition: border-color var(--transition), background-color var(--transition);
}

.nav-toggle__line {
  width: 18px;
  height: 2px;
  background: var(--text);
  border-radius: 999px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle[aria-expanded='true'] .nav-toggle__line:nth-child(1) {
  transform: translateY(5px) rotate(45deg);
}

.nav-toggle[aria-expanded='true'] .nav-toggle__line:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded='true'] .nav-toggle__line:nth-child(3) {
  transform: translateY(-5px) rotate(-45deg);
}

/* Mobile */
@media (max-width: 1100px) {
  .nav__list {
    gap: var(--space-2);
  }
}

@media (max-width: 1140px) {
  .header__actions .btn {
    display: none;
  }
}

@media (max-width: 945px) {
  .lang-switch {
    font-size: 11px;
    letter-spacing: 0.12em;
    padding: 4px 8px;
  }

  .nav__link {
    font-size: 12px;
    letter-spacing: 0.1em;
    padding: 10px 4px;
  }
}

@media (max-width: 900px) {
  .site-header__inner {
    height: 76px;
  }

  .brand {
    min-width: 0;
  }

  .brand__text {
    min-width: 0;
  }

  .brand__areas {
    display: block;
    font-size: 10px;
    letter-spacing: 0.12em;
    line-height: 1.2;
  }

  .nav {
    position: fixed;
    top: 76px;
    left: 0;
    right: 0;
    background: linear-gradient(135deg, rgba(210, 210, 210, 0.99), rgba(170, 170, 170, 0.9));
    backdrop-filter: blur(14px);
    border-top: 1px solid var(--line);
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.12);
    padding: var(--space-3) var(--space-3) var(--space-4);
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 180ms ease, transform 180ms ease;
  }

  body.nav-open .nav {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .nav__list {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }

  .nav__link {
    padding: 10px 0;
    font-size: 14px;
    letter-spacing: 0.12em;
  }

  .nav__cta-mobile {
    display: block;
    margin-top: var(--space-3);
  }

  .nav-toggle {
    display: inline-flex;
  }

  .dropdown__item {
    padding: 10px;
    grid-template-columns: 42px 1fr;
  }
}

@media (max-width: 430px) {
  .site-header__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 8px;
    height: 70px;
  }

  .brand__logo {
    width: 48px;
    height: 48px;
  }

  .brand__name {
    font-size: 12px;
    letter-spacing: 0.18em;
    transform: translateY(3px);
  }

  .brand__role {
    font-size: 11px;
  }

  .brand__areas {
    font-size: 9px;
    letter-spacing: 0.1em;
  }

  .header__actions {
    gap: 8px;
  }

  .lang-switch {
    font-size: 10px;
    letter-spacing: 0.1em;
    padding: 3px 6px;
  }
}