/* Header-specific styles building on base.css */
.header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(22px);
  background: linear-gradient(to bottom, rgba(5, 8, 20, 0.96), rgba(5, 8, 20, 0.88));
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-3);
  padding-bottom: var(--space-3);
}

.navbar-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--font-size-lg);
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.navbar-brand__mark {
  width: 30px;
  height: 30px;
  border-radius: 12px;
  background: radial-gradient(circle at 20% 20%, #ff7933 0, #ff3366 40%, #5700ff 90%);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.22), var(--shadow-soft);
}

.navbar-brand__text {
  white-space: nowrap;
}

.navbar-menu {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.navbar-link {
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-muted);
  position: relative;
  padding-block: 0.2rem;
}

.navbar-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.3rem;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #ff3366, #ff7933);
  transition: width var(--transition-base);
}

.navbar-link:hover,
.navbar-link:focus-visible {
  color: #ffffff !important;
}

.navbar-link:hover::after,
.navbar-link:focus-visible::after {
  width: 100%;
}

.navbar-link.is-active {
  color: #ffffff;
}

.navbar-link.is-active::after {
  width: 100%;
}

.navbar-link--cta {
  padding-inline: 1.1rem;
  padding-block: 0.45rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: radial-gradient(circle at top left, rgba(255, 51, 102, 0.35), transparent 60%);
}

.navbar-link--cta:hover,
.navbar-link--cta:focus-visible {
  border-color: rgba(255, 51, 102, 0.9);
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  align-items: center;
  justify-content: center;
  background: rgba(17, 24, 43, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.16);
}

.nav-toggle-bar {
  position: relative;
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: #ffffff;
  transition: transform var(--transition-fast), background-color var(--transition-fast);
}

.nav-toggle-bar::before,
.nav-toggle-bar::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: #ffffff;
  transition: transform var(--transition-fast), opacity var(--transition-fast), top var(--transition-fast), bottom var(--transition-fast);
}

.nav-toggle-bar::before {
  top: -6px;
}

.nav-toggle-bar::after {
  bottom: -6px;
}

.nav-toggle.is-open .nav-toggle-bar {
  background-color: transparent;
}

.nav-toggle.is-open .nav-toggle-bar::before {
  top: 0;
  transform: rotate(45deg);
}

.nav-toggle.is-open .nav-toggle-bar::after {
  bottom: 0;
  transform: rotate(-45deg);
}

@media (max-width: 960px) {
  .nav-toggle {
    display: inline-flex;
  }

  .navbar-menu {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    background: rgba(5, 8, 20, 0.98);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-4) var(--space-4) var(--space-6);
    gap: var(--space-3);
    transform-origin: top;
    transform: scaleY(1);
  }

  /* JS will toggle visibility classes for animation; keep links usable if JS off */
  .navbar-menu.is-collapsed {
    height: 0;
    padding-top: 0;
    padding-bottom: 0;
    border-bottom: none;
    overflow: hidden;
  }

  .navbar-link {
    width: 100%;
  }
}

@media (min-width: 961px) {
  .navbar-menu {
    position: static;
    height: auto !important;
    padding: 0 !important;
    border-bottom: none !important;
    flex-direction: row;
    align-items: center;
  }
}