.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 40;
  background: linear-gradient(to bottom, rgba(5, 4, 10, 0.98), rgba(5, 4, 10, 0.9), transparent);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

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

.header__brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.header__logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text);
}

.header__logo-mark {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 0.9rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 0.95rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: radial-gradient(circle at 0 0, #facc6b, #a855ff 55%, #3b82f6 100%);
  color: #05040a;
  box-shadow: var(--shadow-glow-primary);
}

.header__logo-text {
  display: flex;
  flex-direction: column;
}

.header__logo-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.header__logo-subtitle {
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.header__nav {
  display: flex;
  align-items: center;
}

.header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  list-style: none;
  margin: 0;
  padding: 0;
}

.header__nav-link {
  position: relative;
  font-size: 0.85rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding: 0.25rem 0;
}

.header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.15rem;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, #facc6b, #a855ff);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition-base);
}

.header__nav-link:hover,
.header__nav-link:focus-visible {
  color: var(--color-text);
}

.header__nav-link:hover::after,
.header__nav-link:focus-visible::after {
  transform: scaleX(1);
}

.header__nav-item--highlight .header__nav-link--cta {
  padding: 0.4rem 1rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(250, 204, 107, 0.7);
  background: radial-gradient(circle at 0 0, rgba(250, 204, 107, 0.25), transparent 60%);
  color: var(--color-text);
}

.header__nav-item--highlight .header__nav-link--cta::after {
  display: none;
}

.header__nav-item--highlight .header__nav-link--cta:hover,
.header__nav-item--highlight .header__nav-link--cta:focus-visible {
  background: radial-gradient(circle at 0 0, rgba(250, 204, 107, 0.4), transparent 70%);
  box-shadow: 0 0 24px rgba(250, 204, 107, 0.4);
}

.header__toggle {
  display: none;
  position: relative;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(7, 5, 20, 0.96);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 0.24rem;
  cursor: pointer;
}

.header__toggle-bar {
  width: 1.1rem;
  height: 2px;
  border-radius: 999px;
  background-color: var(--color-text);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.header__toggle:focus-visible {
  outline: 2px solid var(--color-accent-gold);
  outline-offset: 3px;
}

.header__toggle--open .header__toggle-bar:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.header__toggle--open .header__toggle-bar:nth-child(2) {
  opacity: 0;
}

.header__toggle--open .header__toggle-bar:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

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

  .header__nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    max-height: 0;
    overflow: hidden;
    background: linear-gradient(180deg, rgba(12, 10, 28, 0.98), rgba(5, 4, 10, 0.98));
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    transition: max-height var(--transition-slow);
  }

  .header__nav--open {
    max-height: 18rem;
  }

  .header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-4) var(--space-4) var(--space-5);
    gap: var(--space-3);
  }

  .header__nav-item--highlight {
    width: 100%;
  }

  .header__nav-item--highlight .header__nav-link--cta {
    display: inline-flex;
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .header__logo-subtitle {
    display: none;
  }
}