/* Kairox Studios - Navigation */

.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  height: 72px;
  display: flex;
  align-items: center;
  transition:
    background var(--duration-slow) var(--ease-out),
    border-color var(--duration-slow) var(--ease-out),
    backdrop-filter var(--duration-slow);
  border-bottom: 1px solid transparent;
}

.site-nav.scrolled {
  background: rgba(10, 10, 10, 0.88);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  border-bottom-color: var(--color-border);
}

.nav-container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
}

/* Logo */
.nav-logo {
  display: flex;
  flex-direction: column;
  line-height: 1;
  gap: 1px;
  text-decoration: none;
  flex-shrink: 0;
}

.logo-kairox {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  color: var(--color-text);
  transition: color var(--duration-fast);
}

.logo-studios {
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--color-text-3);
  transition: color var(--duration-fast);
}

.nav-logo:hover .logo-kairox {
  color: var(--color-electric);
}

/* Nav links */
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.nav-links li {
  position: relative;
}

.nav-links a {
  display: block;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-2);
  transition: color var(--duration-fast);
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-text);
}

/* Dropdown */
.nav-dropdown-trigger {
  position: relative;
  cursor: default;
}

.nav-dropdown-trigger > a {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.nav-dropdown-trigger > a::after {
  content: '';
  width: 4px;
  height: 4px;
  border-right: 1px solid currentColor;
  border-bottom: 1px solid currentColor;
  transform: rotate(45deg) translateY(-1px);
  transition: transform var(--duration-fast);
}

.nav-dropdown-trigger:hover > a::after {
  transform: rotate(-135deg) translateY(1px);
}

.nav-dropdown {
  position: absolute;
  top: calc(100% + var(--space-3));
  left: 50%;
  transform: translateX(-50%);
  min-width: 180px;
  background: rgba(15, 15, 15, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--color-border-2);
  border-radius: var(--radius-lg);
  padding: var(--space-3);
  opacity: 0;
  pointer-events: none;
  transform: translateX(-50%) translateY(-8px);
  transition:
    opacity var(--duration-fast) var(--ease-out),
    transform var(--duration-base) var(--ease-out);
}

/* Invisible bridge covering the gap between trigger and dropdown */
.nav-dropdown::before {
  content: '';
  position: absolute;
  bottom: 100%;
  left: 0;
  right: 0;
  height: calc(var(--space-3) + 6px);
}

.nav-dropdown-trigger:hover .nav-dropdown,
.nav-dropdown-trigger:focus-within .nav-dropdown,
.nav-dropdown-trigger.is-open .nav-dropdown {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.nav-dropdown li a {
  font-size: var(--text-sm);
  color: var(--color-text-2);
  padding: var(--space-3) var(--space-5);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  border-radius: var(--radius);
  letter-spacing: 0.05em;
  text-transform: none;
  transition: background var(--duration-fast), color var(--duration-fast);
}

.nav-dropdown li a:hover {
  background: var(--color-surface-3);
  color: var(--color-text);
}

.nav-dropdown .game-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}

.nav-dropdown .game-dot--veilborn  { background: var(--veilborn-gold); }
.nav-dropdown .game-dot--kurogane  { background: var(--kurogane-crimson); }
.nav-dropdown .game-dot--neonfall  { background: var(--neonfall-cyan); }

/* CTA in nav */
.nav-cta {
  display: inline-flex;
  align-items: center;
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text);
  border: 1px solid var(--color-border-2);
  border-radius: var(--radius-sm);
  transition:
    border-color var(--duration-fast),
    background var(--duration-fast),
    transform var(--duration-fast);
  white-space: nowrap;
}

.nav-cta:hover {
  border-color: var(--color-border-3);
  background: rgba(255, 255, 255, 0.05);
  transform: translateY(-1px);
}

/* Mobile hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  cursor: pointer;
  padding: var(--space-2);
}

.nav-hamburger span {
  display: block;
  height: 1px;
  background: var(--color-text-2);
  transition: transform var(--duration-base) var(--ease-out), opacity var(--duration-fast);
}

.nav-hamburger.open span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nav-hamburger.open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.nav-hamburger.open span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Mobile menu */
.nav-mobile {
  display: none;
  position: fixed;
  inset: 0;
  top: 72px;
  background: rgba(10, 10, 10, 0.98);
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
  z-index: calc(var(--z-nav) - 1);
  padding: var(--space-12) var(--gutter);
  flex-direction: column;
  gap: var(--space-6);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-base) var(--ease-out);
}

.nav-mobile.open {
  opacity: 1;
  pointer-events: auto;
}

.nav-mobile a {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  color: var(--color-text-2);
  padding-block: var(--space-4);
  border-bottom: 1px solid var(--color-border);
  transition: color var(--duration-fast);
}

.nav-mobile a:hover {
  color: var(--color-text);
}

@media (max-width: 768px) {
  .nav-links,
  .nav-cta {
    display: none;
  }

  .nav-hamburger {
    display: flex;
  }

  .nav-mobile {
    display: flex;
  }
}