/* ===== Header ===== */
.header {
  position: fixed;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 100%;
  z-index: 100;
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border: none;
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 0;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.header--scrolled {
  top: 16px;
  width: calc(100% - 48px);
  max-width: calc(var(--max-width) + 48px);
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-bottom: 1px solid rgba(43, 92, 230, 0.15);
  border-radius: 16px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12),
              0 2px 8px rgba(0, 0, 0, 0.06),
              inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.header--no-transition {
  transition: none;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  padding: 0 24px;
}

.nav__logo {
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--color-accent);
  text-shadow: 0 1px 3px rgba(255, 255, 255, 0.9);
}

.nav__list {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav__link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
  transition: color var(--transition);
  text-shadow: 0 1px 2px rgba(255, 255, 255, 0.8);
}

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

.nav__link--cta {
  padding: 10px 24px;
  border: 1.5px solid var(--color-accent);
  border-radius: var(--radius);
  color: var(--color-accent);
  transition: background var(--transition), color var(--transition);
}

.nav__link--cta:hover {
  background: var(--color-accent);
  color: #ffffff;
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 110;
}

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

/* Mobile nav overlay — outside backdrop-filter parent */
.nav__mobile-overlay {
  display: none;
}