/* Navigation */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(250, 250, 248, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
  z-index: 1000;
  display: flex;
  align-items: center;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* Logo */
.nav-logo {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.nav-logo span {
  color: var(--signal-orange);
}

/* Desktop menu */
.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  list-style: none;
}

.nav-item {
  position: relative;
}

.nav-link {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link:hover {
  color: var(--text-primary);
  background: var(--border-light);
}

.nav-link .chevron {
  font-size: 10px;
  transition: transform var(--transition-fast);
}

.nav-item:hover .chevron {
  transform: rotate(180deg);
}

/* Dropdown */
.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 260px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: var(--space-sm);
  opacity: 0;
  visibility: hidden;
  transform: translateY(4px);
  transition: all var(--transition-fast);
}

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

.nav-dropdown-link {
  display: block;
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  line-height: 1.4;
}

.nav-dropdown-link:hover {
  background: var(--paper);
  color: var(--signal-orange);
}

/* Mobile toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
  color: var(--text-primary);
}

.nav-toggle svg {
  width: 24px;
  height: 24px;
}

/* Mobile menu */
@media (max-width: 900px) {
  .nav-toggle {
    display: block;
  }

  .nav-menu {
    display: none;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--white);
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-lg);
    gap: 0;
    overflow-y: auto;
  }

  .nav-menu.is-open {
    display: flex;
  }

  .nav-dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    padding: 0 0 0 var(--space-md);
    display: none;
    min-width: auto;
  }

  .nav-item.is-open .nav-dropdown {
    display: block;
  }

  .nav-link {
    padding: var(--space-md) 0;
    font-size: 1rem;
  }

  .nav-dropdown-link {
    padding: var(--space-sm) 0;
  }
}

/* Spacer for fixed nav */
.nav-spacer {
  height: var(--nav-height);
}