/* nav.css */
.main-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: var(--transition-smooth);
  padding: 24px 0;
  background: linear-gradient(to bottom, rgba(2, 2, 5, 0.8) 0%, transparent 100%);
}

.main-nav.scrolled {
  background: rgba(2, 2, 5, 0.95);
  backdrop-filter: blur(24px);
  padding: 16px 0;
  border-bottom: 1px solid var(--color-border);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 80px;
  position: relative;
  height: 60px;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 32px;
  color: var(--color-aqua);
  text-decoration: none;
  letter-spacing: -0.02em;
  text-transform: none;
  font-weight: 400;
  text-shadow: 0 0 20px var(--color-aqua-glow);
  z-index: 1001;
}

.nav-links {
  display: flex;
  gap: 32px;
  align-items: center;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}

/* Solutions Dropdown */
.nav-dropdown {
  position: relative;
  display: inline-block;
  padding: 10px 0;
}

.nav-dropdown-content {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  background: rgba(2, 2, 5, 0.9);
  backdrop-filter: blur(24px);
  min-width: 220px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  border: 1px solid var(--color-border);
  padding: 20px 0;
  z-index: 1000;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}

.nav-dropdown:hover .nav-dropdown-content {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.dropdown-item {
  display: block;
  padding: 12px 32px;
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-ghost);
  text-decoration: none;
  transition: var(--transition-fast);
  position: relative;
}

.dropdown-item:hover {
  color: var(--color-aqua);
  background: rgba(0, 240, 255, 0.05);
  padding-left: 40px;
}

.dropdown-item::before {
  content: '→';
  position: absolute;
  left: 20px;
  opacity: 0;
  transition: var(--transition-fast);
  color: var(--color-aqua);
}

.dropdown-item:hover::before {
  opacity: 1;
}

.nav-link {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-ghost);
  position: relative;
  transition: var(--transition-fast);
  text-decoration: none;
  padding: 8px 0;
  cursor: pointer;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--color-aqua);
  transition: var(--transition-fast);
  box-shadow: 0 0 10px var(--color-aqua-glow);
}

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

.nav-cta {
  z-index: 1001;
}

/* Mobile Nav Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 8px;
  cursor: pointer;
  z-index: 1001;
  width: 30px;
  height: 20px;
  justify-content: center;
}

.nav-toggle span {
  width: 100%;
  height: 1px;
  background: var(--color-aqua);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  display: block;
}

.nav-toggle.open span:nth-child(1) {
  transform: translateY(4.5px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
  opacity: 0;
  transform: translateX(-10px);
}

.nav-toggle.open span:nth-child(3) {
  transform: translateY(-4.5px) rotate(-45deg);
}

/* Mobile Overlay Redesign */
.nav-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: var(--color-void);
  z-index: 999;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: center;
  padding-top: 140px;
  gap: 24px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  overflow-y: auto;
}

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

.nav-overlay-link {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  color: var(--color-chalk);
  text-decoration: none;
  transition: var(--transition-smooth);
  opacity: 0;
  transform: translateY(20px);
}

.nav-overlay.active .nav-overlay-link {
  opacity: 1;
  transform: translateY(0);
}

.nav-overlay-link:hover {
  color: var(--color-aqua);
  letter-spacing: 0.05em;
}

.nav-overlay-solutions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
  margin: 8px 0;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  transition-delay: 0.2s;
}

.nav-overlay.active .nav-overlay-solutions {
  opacity: 1;
  transform: translateY(0);
}

.nav-overlay-solutions a {
  font-family: var(--font-mono);
  font-size: 12px !important;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-aqua) !important;
  text-decoration: none;
  transition: var(--transition-fast);
}

.nav-overlay-solutions a:hover {
  color: var(--color-chalk) !important;
  letter-spacing: 0.3em;
}

.nav-overlay-divider {
  width: 60px;
  height: 1px;
  background: var(--color-border);
  margin: 20px 0;
  opacity: 0;
  transition: all 0.6s ease;
  transition-delay: 0.4s;
}

.nav-overlay.active .nav-overlay-divider {
  opacity: 1;
}

.nav-overlay .btn-primary {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s ease;
  transition-delay: 0.5s;
}

.nav-overlay.active .btn-primary {
  opacity: 1;
  transform: translateY(0);
}

.nav-overlay-footer {
  margin-top: auto;
  padding-bottom: 60px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--color-ghost);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  opacity: 0;
  transition: all 0.6s ease;
  transition-delay: 0.6s;
}

.nav-overlay.active .nav-overlay-footer {
  opacity: 1;
}

@media (max-width: 1024px) {
  .nav-container {
    padding: 0 40px;
  }
  
  .nav-links {
    display: none;
  }
  
  .nav-cta {
    display: none;
  }
  
  .nav-toggle {
    display: flex;
  }
}

@media (max-width: 768px) {
  .nav-container {
    padding: 0 24px;
    height: 80px;
  }
  
  .nav-logo {
    font-size: 24px;
  }
  
  .nav-overlay-link {
    font-size: var(--text-3xl);
  }
}

@media (max-width: 480px) {
  .nav-overlay-link {
    font-size: var(--text-2xl);
  }
}