.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
}

.header.scrolled {
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 20px rgba(0,0,0,0.08);
  padding: 10px 0;
}

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

.nav__list {
  display: flex;
  gap: 32px;
}

.nav__link {
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(255,255,255,0.9);
  transition: var(--transition);
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--white);
  transition: var(--transition);
}

.nav__link:hover::after { width: 100%; }
.nav__link:hover { color: var(--white); }

.header.scrolled .nav__link { color: var(--text-gray); }
.header.scrolled .nav__link::after { background: var(--primary); }
.header.scrolled .nav__link:hover { color: var(--primary); }

.header__cta { display: none; }

@media (min-width: 768px) {
  .header__cta {
    display: inline-flex;
    padding: 10px 22px;
    font-size: 0.85rem;
    z-index: 1001;
  }
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 1001;
  padding: 4px;
}

.nav-toggle span {
  width: 26px;
  height: 2.5px;
  background: var(--white);
  border-radius: 4px;
  transition: var(--transition);
}

.header.scrolled .nav-toggle span { background: var(--text-dark); }

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 6px);
}
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -6px);
}

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

  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--white);
    padding: 80px 32px 32px;
    box-shadow: -4px 0 20px rgba(0,0,0,0.1);
    transition: var(--transition);
  }

  .nav.active { right: 0; }

  .nav__list { flex-direction: column; gap: 24px; }
  .nav__link { color: var(--text-dark); font-size: 1.1rem; }
  .nav__link::after { background: var(--primary); }
  .nav__link:hover { color: var(--primary); }
  .header.scrolled .nav__link { color: var(--text-dark); }
}