/* Navigation styles */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition-base);
}

.site-header.scrolled {
  background-color: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) 0;
  min-height: 80px;
}

/* Logo */
.logo-link {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  transition: color var(--transition-base);
}

.logo-link:hover {
  color: var(--color-primary-hover);
}

.logo-mark {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
}

.logo-text {
  letter-spacing: 0.02em;
}

/* Desktop Navigation */
.nav-desktop {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav-desktop a {
  position: relative;
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text);
  transition: color var(--transition-base);
}

.nav-desktop a:hover,
.nav-desktop a.active {
  color: var(--color-primary);
}

.nav-desktop a.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background-color: var(--color-primary);
  border-radius: 1px;
}

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

.dropdown-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 200px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-sm) 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-base);
  z-index: 1000;
}

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

.dropdown-menu a {
  display: block;
  padding: var(--space-sm) var(--space-md);
  font-size: 0.875rem;
  white-space: nowrap;
  transition: background-color var(--transition-fast);
}

.dropdown-menu a:hover {
  background-color: var(--color-surface-2);
}

/* Mobile Navigation */
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  transition: all var(--transition-base);
}

.nav-toggle:hover {
  background-color: var(--color-surface-2);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.nav-mobile {
  display: none;
  position: fixed;
  top: 100%;
  left: 0;
  right: 0;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-lg) 0;
  transform: translateY(-100%);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

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

.nav-mobile ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  padding: 0 var(--space-md);
}

.nav-mobile a {
  display: block;
  padding: var(--space-md);
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 1rem;
  color: var(--color-text);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.nav-mobile a:hover,
.nav-mobile a.active {
  background-color: var(--color-surface);
  color: var(--color-primary);
}

.nav-mobile .btn {
  margin-top: var(--space-md);
  justify-content: center;
}

/* Mobile dropdown */
.nav-mobile .dropdown-menu {
  display: none;
  padding-left: var(--space-lg);
  margin-top: var(--space-sm);
}

.nav-mobile .dropdown-menu.open {
  display: block;
}

.nav-mobile .dropdown-toggle.open .material-symbols-outlined {
  transform: rotate(180deg);
}

/* Mobile overlay */
.nav-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

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

/* Body states */
body.nav-open {
  overflow: hidden;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-desktop {
    display: none;
  }

  .nav-toggle,
  .nav-mobile,
  .nav-overlay {
    display: block;
  }

  .nav-wrapper {
    padding: var(--space-sm) 0;
    min-height: 64px;
  }

  .logo-link {
    font-size: 1.25rem;
  }

  .logo-mark {
    width: 32px;
    height: 32px;
  }
}