/* Two-Tier Navigation System (Phase 4) */

/* ==========================================
   Primary Navigation
   ========================================== */

.primary-navigation {
  background: white;
  border-bottom: 1px solid var(--border-light);
  position: sticky;
  top: 0;
  z-index: 900;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.primary-nav-container {
  max-width: 1600px;
  margin: 0 auto;
  padding: 0 0.75rem;
  display: flex;
  align-items: center;
  gap: 2rem;
  height: 60px;
}

/* Brand */
.nav-brand {
  display: flex;
  align-items: center;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 1.125rem;
}

.brand-icon {
  font-size: 1.5rem;
}

.brand-name {
  display: none;
}

@media (min-width: 768px) {
  .brand-name {
    display: inline;
  }
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 0.375rem;
  transition: background-color 0.2s;
}

.mobile-menu-toggle:hover {
  background-color: var(--bg-surface-elevated);
}

@media (min-width: 1024px) {
  .mobile-menu-toggle {
    display: none;
  }
}

/* Primary Navigation Items */
.nav-primary-items {
  display: none;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 0.5rem;
  flex: 1;
}

@media (min-width: 1024px) {
  .nav-primary-items {
    display: flex;
  }
}

.nav-primary-item {
  position: relative;
}

.nav-primary-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1rem;
  border-radius: 0.375rem;
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.875rem;
  transition: all 0.2s;
  background: none;
  border: none;
  cursor: pointer;
  white-space: nowrap;
}

.nav-primary-link:hover {
  background-color: var(--bg-surface-elevated);
  color: var(--text-primary);
}

.nav-primary-item.active .nav-primary-link {
  background-color: var(--color-primary-50);
  color: var(--color-primary-700);
}

.nav-primary-link.has-submenu {
  padding-right: 0.75rem;
}

.submenu-arrow {
  transition: transform 0.2s;
  color: var(--text-tertiary);
}

.nav-primary-link[aria-expanded="true"] .submenu-arrow {
  transform: rotate(180deg);
}

/* Operations Submenu */
.operations-submenu {
  position: absolute;
  top: calc(100% + 0.5rem);
  left: 0;
  background: white;
  border: 1px solid var(--border-light);
  border-radius: 0.5rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  min-width: 600px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.2s;
  z-index: 1000;
}

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

.operations-submenu-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.5rem;
  padding: 1.5rem;
}

.operations-section {
  min-width: 0;
}

.section-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-tertiary);
  margin: 0 0 0.75rem;
}

.section-items {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.section-item-link {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.5rem 0.75rem;
  border-radius: 0.375rem;
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.875rem;
  transition: all 0.2s;
}

.section-item-link:hover {
  background-color: var(--bg-surface-elevated);
  color: var(--text-primary);
}

.section-item-link.active {
  background-color: var(--color-primary-50);
  color: var(--color-primary-700);
}

/* User Menu */
.nav-user-menu {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-left: auto;
}

.nav-icon-button {
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 0.375rem;
  transition: all 0.2s;
}

.nav-icon-button:hover {
  background-color: var(--bg-surface-elevated);
  color: var(--text-primary);
}

/* User Profile */
.nav-user-profile {
  position: relative;
}

.user-profile-button {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.25rem;
  border-radius: 0.375rem;
  transition: background-color 0.2s;
}

.user-profile-button:hover {
  background-color: var(--bg-surface-elevated);
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-primary-600);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.875rem;
}

.user-menu-dropdown {
  position: fixed;
  top: 62px;
  right: 1rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: 0.5rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  min-width: 220px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.2s;
  z-index: 1000;
}

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

.user-menu-header {
  padding: 1rem;
}

.user-menu-name {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.875rem;
}

.user-menu-email {
  font-size: 0.8125rem;
  color: var(--text-tertiary);
  margin-top: 0.25rem;
}

.user-menu-divider {
  height: 1px;
  background: var(--border-light);
}

.user-menu-items {
  list-style: none;
  margin: 0;
  padding: 0.5rem;
}

.user-menu-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.625rem 0.75rem;
  border-radius: 0.375rem;
  text-decoration: none !important;
  color: var(--text-secondary);
  font-size: 0.875rem;
  transition: all 0.2s;
}

.user-menu-item:hover {
  background-color: var(--bg-surface-elevated);
  text-decoration: none !important;
  color: var(--text-primary);
}

/* Mobile Navigation */
@media (max-width: 1023px) {
  .nav-primary-items {
    display: none;
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-light);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    flex-direction: column;
    padding: 1rem;
    gap: 0.5rem;
    max-height: calc(100vh - 60px);
    overflow-y: auto;
  }

  .nav-primary-items.mobile-open {
    display: flex;
  }

  .operations-submenu {
    position: static;
    min-width: 0;
    margin-top: 0.5rem;
    box-shadow: none;
    border: none;
    border-left: 2px solid var(--color-primary-600);
  }

  .operations-submenu-container {
    grid-template-columns: 1fr;
    gap: 1rem;
    padding: 1rem;
  }
}

/* ==========================================
   Interface Mode Badge
   ========================================== */

.interface-mode-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.25rem 0.625rem;
  border-radius: 0.375rem;
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--color-primary-50);
  color: var(--color-primary-700);
  border: 1px solid var(--color-primary-200);
}

.interface-mode-badge.simple {
  background: var(--color-primary-50);
  color: var(--color-primary-700);
  border-color: var(--color-primary-200);
}

.interface-mode-badge.complex {
  background: #f3e8ff;
  color: #6b21a8;
  border-color: #e9d5ff;
}