.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  height: var(--nav-height);
  transition: background var(--transition), backdrop-filter var(--transition), border-color var(--transition);
}

.site-header.is-scrolled {
  background: rgba(10, 10, 12, 0.82);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.site-logo {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.site-nav__panel {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.lang-toggle--header {
  margin-left: auto;
}

.site-nav__list {
  display: flex;
  gap: var(--space-md);
}

.site-nav__link {
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  transition: color var(--transition);
}

.site-nav__link:hover,
.site-nav__link.is-active {
  color: var(--color-text);
}

.site-nav__social {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  color: var(--color-text-muted);
  transition: color var(--transition), border-color var(--transition), background var(--transition);
}

.site-nav__social:hover {
  color: var(--color-text);
  border-color: var(--color-accent);
  background: var(--color-accent-soft);
}

.site-nav__actions {
  display: none;
}

.lang-toggle {
  min-width: 2.75rem;
  padding: 0.45rem 0.75rem;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.04);
  transition: color var(--transition), border-color var(--transition), background var(--transition);
}

.lang-toggle:hover {
  border-color: var(--color-accent);
  background: var(--color-accent-soft);
}

.site-nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 0.5rem;
}

.site-nav__toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  transition: transform var(--transition), opacity var(--transition);
}

.site-nav__toggle.is-open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.site-nav__toggle.is-open span:nth-child(2) {
  opacity: 0;
}

.site-nav__toggle.is-open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 768px) {
  .site-nav__toggle {
    display: flex;
  }

  .site-nav__panel {
    position: fixed;
    inset: var(--nav-height) 0 0;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
    background: rgba(10, 10, 12, 0.96);
    backdrop-filter: blur(16px);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition), visibility var(--transition);
  }

  .site-nav__panel.is-open {
    opacity: 1;
    visibility: visible;
  }

  .site-nav__list {
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
  }

  .site-nav__link {
    font-size: 1rem;
  }

  .lang-toggle--header {
    margin-left: 0;
    order: 2;
  }

  .site-nav__toggle {
    order: 3;
  }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-radius: var(--radius-pill);
  transition: transform var(--transition), background var(--transition), border-color var(--transition), color var(--transition);
}

.btn:hover {
  transform: translateY(-1px);
}

.btn--primary {
  color: var(--color-text);
  background: var(--color-accent);
}

.btn--primary:hover {
  background: #8566b8;
}

.btn--ghost {
  color: var(--color-text);
  border: 1px solid rgba(255, 255, 255, 0.28);
  background: rgba(255, 255, 255, 0.04);
}

.btn--ghost:hover {
  border-color: var(--color-accent);
  background: var(--color-accent-soft);
}

.quote-card {
  padding: var(--space-md);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.quote-card__text {
  margin-bottom: var(--space-sm);
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  font-style: italic;
}

.quote-card__author {
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.quote-card__role {
  margin-top: 0.25rem;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.site-footer {
  padding-block: var(--space-lg);
  border-top: 1px solid var(--color-border);
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
}

.site-footer__copy {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.email-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-size: clamp(1.125rem, 3vw, 1.5rem);
  font-weight: 500;
  color: var(--color-text);
  transition: color var(--transition);
}

.email-link:hover {
  color: var(--color-accent);
}