/* ================================
   NAVIGATION COMPONENT
   Header navigation styles using token colors
   Rule: Components reference variables, never define colors
   ================================ */

/* Navigation Bar */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--nav-bg);
  box-shadow: var(--shadow-lg);
  backdrop-filter: var(--blur-md);
}

.nav-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.logo-img {
  height: 40px;
  width: auto;
}

/* Navigation Links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
}

/* Menu Dropdown */
.menu-dropdown {
  position: relative;
}

.menu-btn {
  background: transparent;
  border: 2px solid var(--border-medium);
  color: var(--nav-text);
  padding: 10px 24px;
  font-size: 1rem;
  font-weight: var(--weight-semibold);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: var(--letter-spacing-wide);
  cursor: pointer;
  transition: all var(--transition-base);
  font-family: var(--font-heading);
  text-transform: uppercase;
}

.menu-btn::after {
  content: '▾';
  font-size: 0.8rem;
  transition: transform var(--transition-base);
}

.menu-btn.active::after {
  transform: rotate(180deg);
}

.menu-btn:hover {
  transform: var(--lift-sm);
  border-color: var(--border-strong);
  background: var(--glass-teal-hover-subtle);
  box-shadow: var(--glow-md);
}

/* Dropdown Menu */
.dropdown-menu {
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  min-width: 200px;
  background: var(--nav-bg);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-elevated);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-base);
  overflow: hidden;
}

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

.dropdown-menu a {
  display: block;
  padding: 14px 20px;
  color: var(--nav-text);
  text-decoration: none;
  transition: all var(--transition-base);
  border-bottom: 1px solid var(--border-subtle);
}

.dropdown-menu a:last-child {
  border-bottom: none;
}

.dropdown-menu a:hover {
  background: var(--glass-teal-hover-subtle);
  color: var(--accent-primary);
  padding-left: 24px;
}

/* CTA Button in Nav */
.cta-btn-nav {
  padding: 10px 24px;
  font-size: 1rem;
  background: var(--button-primary-bg);
  color: var(--button-primary-text);
  text-decoration: none;
  border-radius: var(--radius-sm);
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wider);
  box-shadow: var(--shadow-lg), var(--shadow-glass);
  transition: all var(--transition-base);
  display: inline-block;
  font-family: var(--font-heading);
}

.cta-btn-nav:hover {
  transform: var(--lift-sm);
  box-shadow: var(--shadow-elevated);
}

/* Hamburger Menu (Mobile) */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.hamburger span {
  width: 28px;
  height: 3px;
  background: var(--accent-primary);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(8px, 8px);
}

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

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(8px, -8px);
}

/* Mobile Navigation */
@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }

  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--nav-bg);
    border-top: 1px solid var(--border-medium);
    padding: 20px;
    gap: 15px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-base);
  }

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

  .menu-btn,
  .cta-btn-nav {
    width: 100%;
    text-align: center;
    justify-content: center;
  }

  .dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    margin-top: 10px;
    display: none;
  }

  .dropdown-menu.active {
    display: block;
  }
}