/**
 * E-Systems Client Manager - Layout
 * Page structure, header, navigation
 */

/* ========================================
   PAGE LAYOUT
   ======================================== */

.page-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.page-header {
  flex-shrink: 0;
}

.page-content {
  flex: 1 0 auto;
  padding: var(--spacing-xl) 0;
}

.page-footer {
  flex-shrink: 0;
  padding: var(--spacing-lg) 0;
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  text-align: center;
  color: var(--text-secondary);
  font-size: var(--text-sm);
}

/* ========================================
   MAIN HEADER
   ======================================== */

.main-header {
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  height: 64px;
}

/* ========================================
   BRAND/LOGO
   ======================================== */

.header-brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.brand-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-decoration: none;
  color: var(--text-primary);
  transition: opacity var(--transition-base);
}

.brand-link:hover {
  opacity: 0.8;
}

.brand-logo {
  height: 36px;
  width: auto;
}

.brand-name {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  white-space: nowrap;
}

/* Hide brand name on small screens */
@media (max-width: 640px) {
  .brand-name {
    display: none;
  }
}

/* ========================================
   NAVIGATION
   ======================================== */

.header-nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--text-primary);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  white-space: nowrap;
  border: none;
  background: transparent;
  cursor: pointer;
}

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

.nav-link.active {
  background-color: var(--primary-light);
  color: var(--primary-color);
}

/* Navigation Dropdown */
.nav-dropdown {
  position: relative;
}

.nav-dropdown .dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 200px;
  margin-top: var(--spacing-xs);
  padding: var(--spacing-sm);
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-dropdown);
}

.nav-dropdown:hover .dropdown-menu {
  display: block;
}

.dropdown-item {
  display: block;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--text-sm);
  color: var(--text-primary);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-base);
}

.dropdown-item:hover {
  background-color: var(--bg-hover);
  color: var(--primary-color);
}

/* ========================================
   USER MENU
   ======================================== */

.header-user {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.user-dropdown {
  position: relative;
}

.user-button {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
}

.user-button:hover {
  background-color: var(--bg-hover);
  border-color: var(--primary-color);
}

.user-name {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--text-primary);
}

.user-dropdown .dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  right: 0;
  min-width: 200px;
  margin-top: var(--spacing-xs);
  padding: var(--spacing-sm);
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-dropdown);
}

.user-dropdown:hover .dropdown-menu {
  display: block;
}

/* ========================================
   MOBILE MENU
   ======================================== */

.mobile-menu-toggle {
  display: none;
  padding: var(--spacing-sm);
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--text-primary);
}

.mobile-menu-icon {
  display: block;
  width: 24px;
  height: 2px;
  background-color: currentColor;
  position: relative;
}

.mobile-menu-icon::before,
.mobile-menu-icon::after {
  content: '';
  display: block;
  width: 24px;
  height: 2px;
  background-color: currentColor;
  position: absolute;
  left: 0;
  transition: transform var(--transition-base);
}

.mobile-menu-icon::before {
  top: -8px;
}

.mobile-menu-icon::after {
  top: 8px;
}

/* Mobile Navigation Styles */
@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: block;
  }
  
  .header-nav {
    display: none;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--spacing-md);
    background-color: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    overflow-y: auto;
    z-index: var(--z-fixed);
  }
  
  .header-nav.open {
    display: flex;
  }
  
  .nav-link {
    justify-content: flex-start;
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color-light);
  }
  
  .nav-dropdown .dropdown-menu {
    position: static;
    display: none;
    margin: 0;
    padding-left: var(--spacing-lg);
    border: none;
    box-shadow: none;
  }
  
  .nav-dropdown.open .dropdown-menu {
    display: block;
  }
  
  .user-dropdown {
    border-top: 2px solid var(--border-color);
    padding-top: var(--spacing-md);
    margin-top: var(--spacing-md);
  }
  
  .user-button {
    width: 100%;
    justify-content: space-between;
  }
  
  .user-dropdown .dropdown-menu {
    position: static;
    display: none;
    margin: var(--spacing-sm) 0 0;
    box-shadow: none;
  }
  
  .user-dropdown.open .dropdown-menu {
    display: block;
  }
}

/* ========================================
   BREADCRUMBS
   ======================================== */

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  padding: var(--spacing-md) 0;
  font-size: var(--text-sm);
}

.breadcrumb-link {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-base);
}

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

.breadcrumb-separator {
  color: var(--text-tertiary);
}

.breadcrumb-current {
  color: var(--text-primary);
  font-weight: var(--font-medium);
}

/* ========================================
   CONTENT SECTIONS
   ======================================== */

.section {
  padding: var(--spacing-xl) 0;
}

.section-header {
  margin-bottom: var(--spacing-xl);
}

.section-title {
  margin: 0 0 var(--spacing-sm);
  font-size: var(--text-3xl);
  font-weight: var(--font-bold);
  color: var(--text-primary);
}

.section-subtitle {
  margin: 0;
  font-size: var(--text-lg);
  color: var(--text-secondary);
}

/* ========================================
   CONTENT GRID
   ======================================== */

.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-cols-1 {
  grid-template-columns: repeat(1, 1fr);
}

.grid-cols-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-cols-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-cols-4 {
  grid-template-columns: repeat(4, 1fr);
}

/* Responsive Grid */
@media (max-width: 768px) {
  .grid-cols-2,
  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: repeat(1, 1fr);
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ========================================
   ACTION CARDS (for main menu)
   ======================================== */

.action-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl);
  text-align: center;
  background-color: var(--bg-primary);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: var(--text-primary);
  transition: all var(--transition-base);
  cursor: pointer;
  min-height: 150px;
}

.action-card:hover {
  border-color: var(--primary-color);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.action-card-icon {
  font-size: var(--text-4xl);
  margin-bottom: var(--spacing-md);
  color: var(--primary-color);
}

.action-card-title {
  margin: 0;
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
}

.action-card-description {
  margin: var(--spacing-xs) 0 0;
  font-size: var(--text-sm);
  color: var(--text-secondary);
}