/* Header styles for Ultimate Fun Arena */

.ufa-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(18px);
  background:
    radial-gradient(circle at top left, rgba(55, 179, 255, 0.18), transparent 55%),
    radial-gradient(circle at bottom right, rgba(168, 85, 255, 0.18), transparent 55%),
    rgba(5, 8, 18, 0.94);
  border-bottom: 1px solid var(--color-border-subtle);
}

.ufa-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-top: var(--space-3);
  padding-bottom: var(--space-3);
}

.ufa-header__branding {
  display: flex;
  align-items: center;
}

.ufa-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.ufa-header__logo-mark {
  width: 2.2rem;
  height: 2.2rem;
  border-radius: 0.9rem;
  background:
    radial-gradient(circle at 30% 0, rgba(248, 250, 252, 0.6), transparent 55%),
    conic-gradient(from 200deg, var(--color-primary), var(--color-accent-purple), var(--color-accent-emerald), var(--color-primary));
  box-shadow: var(--shadow-glow-primary);
}

.ufa-header__site-title {
  font-size: 0.9rem;
  color: var(--color-text);
}

.ufa-header__nav {
  margin-left: auto;
}

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

.ufa-header__nav-link {
  position: relative;
  font-size: 0.85rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-soft);
  padding: 0.3rem 0;
}

.ufa-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.2rem;
  width: 0;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent-emerald));
  transition: width var(--transition-base);
}

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

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

.ufa-header__cta {
  margin-left: var(--space-4);
  display: flex;
}

.ufa-header__cta-btn {
  white-space: nowrap;
}

/* Mobile menu toggle */
.ufa-header__menu-toggle {
  display: none;
  position: relative;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border-subtle);
  background: rgba(15, 23, 42, 0.96);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 0.25rem;
}

.ufa-header__menu-toggle-bar {
  width: 1.35rem;
  height: 2px;
  border-radius: 999px;
  background: var(--color-text);
  transition: transform var(--transition-fast), opacity var(--transition-fast), width var(--transition-fast);
}

/* Toggle animation state */
.ufa-header__menu-toggle.is-active .ufa-header__menu-toggle-bar:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

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

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

/* Mobile layout */
@media (max-width: 900px) {
  .ufa-header__inner {
    padding-top: var(--space-2);
    padding-bottom: var(--space-2);
  }

  .ufa-header__menu-toggle {
    display: inline-flex;
    z-index: 9999;
  }

  .ufa-header__nav {
    position: fixed;
    inset-inline: 0;
    top: 0;
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition-base), opacity var(--transition-base);
    background: rgba(5, 8, 18, 0.98);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--color-border-subtle);
  }

  .ufa-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
    padding: var(--space-6) var(--space-4) var(--space-4);
  }

  .ufa-header__nav-link {
    width: 100%;
  }

  .ufa-header__nav--open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .ufa-header__cta {
    display: none;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .ufa-header__nav,
  .ufa-header__menu-toggle-bar {
    transition: none;
  }
}