/* ========================================
   HEADER / Navigation
   ======================================== */

.site-header {
  position: fixed;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 1920px;
  z-index: 100;
  background: linear-gradient(to bottom, rgba(255, 255, 255, 1) 0%, rgba(255, 255, 255, 0) 100%);
  transition: box-shadow var(--transition), background var(--transition);
}

.site-header.is-scrolled {
  box-shadow: var(--shadow-sm);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
}

.header-inner {
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: 40px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

/* ── Logo ── */
.header-logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.header-logo__img {
  height: 36px;
  width: auto;
  display: block;
}

/* ── Global Nav ── */
.global-nav {
  display: flex;
  align-items: center;
  gap: 0;
}

.global-nav__list {
  display: flex;
  align-items: center;
  gap: 0;
}

.global-nav__item a {
  display: block;
  padding: 8px 14px;
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 500;
  letter-spacing: .06em;
  color: var(--clr-navy);
  white-space: nowrap;
  position: relative;
}

.global-nav__item a::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 14px;
  right: 14px;
  height: 2px;
  background: var(--clr-gold);
  transform: scaleX(0);
  transition: transform var(--transition);
}


.global-nav__item a:hover::after {
  transform: scaleX(1);
}

/* ── Hamburger ── */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  cursor: pointer;
  background: none;
  border: none;
}

.hamburger__line {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--clr-navy);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.hamburger.is-open .hamburger__line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger.is-open .hamburger__line:nth-child(2) {
  opacity: 0;
}
.hamburger.is-open .hamburger__line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── Mobile Menu ── */
.mobile-nav {
  display: flex;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  bottom: 0;
  background: #f2faff;
  z-index: 99;
  padding: 32px 24px;
  overflow-y: auto;
  flex-direction: column;
  gap: 0;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity .3s ease, visibility .3s ease;
}

.mobile-nav.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.mobile-nav__list {
  display: flex;
  flex-direction: column;
}

.mobile-nav__item a,
.mobile-nav__link {
  display: block;
  padding: 16px 0;
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 500;
  color: var(--clr-navy);
  border-bottom: 1px solid var(--clr-gray-light);
  letter-spacing: .06em;
}

.mobile-nav__cta {
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.mobile-nav__cta .btn {
  width: 100%;
  justify-content: center;
  font-size: 14px;
}

/* ── Responsive ── */

@media (max-width: 1024px) {

  .global-nav__item a {
    padding: 8px 10px;
    font-size: 12px;
  }

  .global-nav {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .header-inner {
    padding-inline: 20px;
    height: 60px;
  }

  .header-logo__img {
    height: 30px;
  }

  .mobile-nav {
    top: 60px;
    padding: 24px 20px 32px;
  }

  .mobile-nav__cta .btn--primary[href="#contact"] {
    color: #FFF;
    line-height: 25px;
  }
}