/* === NAVIGATION === */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 var(--space-lg);
  transition: all var(--duration-base) var(--ease-out-expo);
}

.nav.scrolled {
  background: rgba(10, 14, 26, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0, 212, 255, 0.1);
}

.nav.hidden {
  transform: translateY(-100%);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--max-width);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.nav-logo img {
  height: 36px;
  width: auto;
}

.nav-logo-text {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: var(--fw-bold);
  color: var(--text-primary-light);
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav-link {
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: var(--fw-medium);
  color: var(--text-secondary-light);
  transition: all var(--duration-fast) var(--ease-out-expo);
  position: relative;
  padding: var(--space-xs) 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-aqua-glow);
  transition: width var(--duration-base) var(--ease-out-expo);
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-accent);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.nav-login-btn {
  font-family: var(--font-heading);
  font-size: var(--fs-small);
  font-weight: var(--fw-semibold);
  color: var(--text-accent);
  border: 1.5px solid rgba(0, 212, 255, 0.4);
  padding: 8px 20px;
  border-radius: var(--radius-full);
  transition: all var(--duration-fast) var(--ease-out-expo);
  cursor: pointer;
}

.nav-login-btn:hover {
  background: rgba(0, 212, 255, 0.1);
  border-color: var(--color-aqua-glow);
  transform: translateY(-1px);
}

/* === MOBILE HAMBURGER === */

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  cursor: pointer;
  z-index: 1001;
}

.nav-hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-primary-light);
  border-radius: 2px;
  transition: all var(--duration-base) var(--ease-out-expo);
}

.nav-hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

.nav-hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* === MOBILE OVERLAY === */

.nav-mobile-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10, 14, 26, 0.95);
  backdrop-filter: blur(20px);
  z-index: 999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-xl);
  opacity: 0;
  visibility: hidden;
  transition: all var(--duration-base) var(--ease-out-expo);
}

.nav-mobile-overlay.active {
  opacity: 1;
  visibility: visible;
}

.nav-mobile-overlay .nav-link {
  font-size: 1.25rem;
}

@media (max-width: 767px) {
  .nav-links {
    display: none;
  }

  .nav-hamburger {
    display: flex;
  }

  .nav-login-btn {
    font-size: var(--fs-caption);
    padding: 6px 14px;
  }
}