.header {
  position: sticky;
  top: 0;
  background-color: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid #eaeaea;
  transition: box-shadow 0.3s ease;
}

.header--scrolled {
  box-shadow: var(--shadow-soft);
}

.header__container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: var(--header-height);
}

.header__logo {
  font-size: 1.1rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-primary);
  text-decoration: none;
  transition: var(--transition);
  flex-shrink: 0;
}

@media (hover: hover) {
  .header__logo:hover {
    color: var(--color-secondary);
  }
}

.nav__list {
  display: flex;
  gap: var(--spacing-lg);
  list-style: none;
}

.nav__link {
  font-weight: 600;
  color: var(--color-text);
  position: relative;
  transition: var(--transition);
  white-space: nowrap;
}

@media (hover: hover) {
  .nav__link::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-secondary);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.3s ease;
  }

  .nav__link:hover {
    color: var(--color-secondary);
  }

  .nav__link:hover::after {
    transform: scaleX(1);
    transform-origin: left;
  }
}

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.burger {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 20px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  flex-shrink: 0;
}

.burger__line {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-primary);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
  transform-origin: center;
}

.burger--open .burger__line:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}
.burger--open .burger__line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.burger--open .burger__line:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

.mobile-menu {
  display: none;
}

.mobile-menu__inner {
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.4s ease;
  background-color: var(--color-white);
  border-top: 1px solid #eaeaea;
}

.mobile-menu--open .mobile-menu__inner {
  max-height: 500px;
}

.mobile-menu__links {
  display: flex;
  flex-direction: column;
  padding: var(--spacing-sm) 0;
}

.mobile-menu__link {
  display: block;
  padding: 14px var(--spacing-md);
  font-weight: 600;
  font-size: 1rem;
  color: var(--color-text);
  border-left: 3px solid transparent;
  transition: var(--transition);
}

.mobile-menu__link:active,
.mobile-menu__link:hover {
  color: var(--color-secondary);
  border-left-color: var(--color-secondary);
  background-color: var(--color-bg-light);
}

.mobile-menu__footer {
  padding: var(--spacing-md);
  border-top: 1px solid #f0f0f0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

@media (max-width: 360px) {
  .header__logo { font-size: 0.9rem; letter-spacing: 0.5px; }
}

@media (max-width: 1200px) {
  .header__nav,
  .header__cta,
  .header__socials {
    display: none;
  }

  .burger {
    display: flex;
  }

  .mobile-menu {
    display: block;
  }
}