/* Header-specific styles for The Art of Game */

.header-shell {
  position: sticky;
  top: 0;
  z-index: 40;
}

.navbar-brand-wrap {
  display: flex;
  align-items: center;
}

.brand-mark {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  border: 1px solid rgba(148, 163, 184, 0.7);
  background: radial-gradient(circle at 30% 0, #5ee6ff 0, #0ea5e9 40%, #1d1148 100%);
  box-shadow: 0 0 12px rgba(94, 230, 255, 0.6);
}

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

.brand-title {
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.brand-subtitle {
  margin-top: 2px;
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

/* Navigation layout */

.navbar-list {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.navbar-item {
  position: relative;
}

.navbar-link {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

.navbar-link:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

.navbar-cta-wrapper {
  display: flex;
  align-items: center;
}

.navbar-cta {
  font-size: 0.7rem;
}

.navbar-cta-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.navbar-cta-icon i {
  font-size: 0.9rem;
}

/* Mobile toggle */

.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 4px;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(148, 163, 184, 0.6);
  background: rgba(15, 23, 42, 0.92);
  color: var(--color-text);
}

.nav-toggle-bar {
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background-color: var(--color-text);
  transition: transform var(--transition-base), opacity var(--transition-base), translate var(--transition-base);
}

/* Default mobile state */

@media (max-width: 899px) {
  .navbar {
    padding-top: var(--space-2);
    padding-bottom: var(--space-2);
  }

  .navbar-menu {
    position: fixed;
    inset: 56px 0 auto 0;
    max-height: 0;
    overflow: hidden;
    display: block;
    background: radial-gradient(circle at 0 0, rgba(13, 80, 92, 0.99) 0, rgba(15, 23, 42, 0.99) 50%);
    border-bottom: 1px solid rgba(148, 163, 184, 0.35);
    transition: max-height var(--transition-slow) ease;
  }

  .navbar-menu.is-open {
    max-height: 320px;
  }

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

  .navbar-item {
    width: 100%;
  }

  .navbar-link {
    display: inline-flex;
  }

  .navbar-cta-wrapper {
    padding: 0 var(--space-4) var(--space-4);
  }

  .navbar-cta {
    width: 100%;
    justify-content: center;
  }
}

/* Desktop state */

@media (min-width: 900px) {
  .nav-toggle {
    display: none;
  }

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

/* Toggle animated icon when menu open */

.nav-toggle.is-active .nav-toggle-bar:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle.is-active .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-active .nav-toggle-bar:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}