/* ===============================================
   MODERN NAVIGATION COMPONENT
   =============================================== */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  background: rgba(15, 20, 25, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  transition: all var(--transition-base);
}

.navbar.scrolled {
  background: rgba(15, 20, 25, 0.98);
  box-shadow: var(--shadow-lg);
}

.navbar-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) 0;
  max-width: 1200px;
  margin: 0 auto;
  padding-left: var(--space-md);
  padding-right: var(--space-md);
}

/* Logo */
.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--text-xl);
  color: var(--text-primary);
  transition: var(--transition-base);
}

.navbar-brand:hover {
  transform: scale(1.05);
}

.navbar-logo {
  width: 45px;
  height: 45px;
  border-radius: var(--radius-md);
  transition: var(--transition-base);
}

.navbar-logo:hover {
  box-shadow: var(--shadow-glow);
}

/* Navigation Menu */
.navbar-menu {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

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

.nav-link {
  position: relative;
  padding: var(--space-sm) var(--space-md);
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.nav-link::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--primary-gradient);
  transform: translateX(-50%);
  transition: var(--transition-base);
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
  background: rgba(102, 126, 234, 0.1);
}

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

/* CTA Button */
.navbar-cta {
  padding: var(--space-sm) var(--space-lg);
  background: var(--primary-gradient);
  color: var(--text-primary);
  border-radius: var(--radius-lg);
  font-weight: 600;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-md);
}

.navbar-cta:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: var(--space-sm);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.1);
  transition: var(--transition-base);
}

.mobile-menu-toggle:hover {
  background: rgba(255, 255, 255, 0.2);
}

.hamburger-line {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition-base);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.active .hamburger-line:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* Mobile Menu */
.mobile-menu {
  position: fixed;
  top: 100%;
  left: 0;
  right: 0;
  background: rgba(15, 20, 25, 0.98);
  backdrop-filter: blur(20px);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  transform: translateY(-100%);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  z-index: var(--z-modal);
}

.mobile-menu.active {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.mobile-menu-content {
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.mobile-nav-link {
  padding: var(--space-md);
  color: var(--text-primary);
  border-radius: var(--radius-md);
  transition: var(--transition-base);
  border: 1px solid transparent;
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
  background: rgba(102, 126, 234, 0.1);
  border-color: rgba(102, 126, 234, 0.3);
}

.mobile-cta {
  margin-top: var(--space-md);
  padding: var(--space-md);
  background: var(--primary-gradient);
  color: var(--text-primary);
  border-radius: var(--radius-lg);
  text-align: center;
  font-weight: 600;
}

/* Responsive Design */
@media (max-width: 768px) {
  .navbar-nav,
  .navbar-cta {
    display: none;
  }
  
  .mobile-menu-toggle {
    display: flex;
  }
  
  .navbar-container {
    padding: var(--space-sm) var(--space-md);
  }
}

/* Scroll Progress Indicator */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: var(--primary-gradient);
  z-index: calc(var(--z-fixed) + 1);
  transition: width 0.1s ease-out;
}

/* Navigation Animation */
.navbar-enter {
  animation: slideInDown 0.6s ease-out;
}

@keyframes slideInDown {
  from {
    transform: translateY(-100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}