/**
 * AM Site Solutions Portal - Layout Styles
 * Main app structure, grid, and positioning
 */

/* ========================================
   APP CONTAINER
   ======================================== */
.app-container {
  display: flex;
  width: 100%;
  min-height: 100vh;
  position: relative;
}

/* ========================================
   MAIN CONTENT AREA
   ======================================== */
.main-content {
  flex: 1;
  min-width: 0;
  margin-left: var(--sidebar-width);
  padding-bottom: 0;
  transition: margin-left var(--transition-base);
  background-color: var(--grey-lighter);
}

.sidebar.collapsed ~ .main-content {
  margin-left: var(--sidebar-collapsed-width);
}

.content-area {
  padding: var(--content-padding-desktop);
  max-width: var(--content-max-width);
  margin: 0 auto;
  min-height: calc(100vh - (var(--content-padding-desktop) * 2));
}

/* ========================================
   LOADING OVERLAY
   ======================================== */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(255, 255, 255, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-loading);
  opacity: 1;
  transition: opacity var(--transition-base);
}

.loading-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.loading-overlay .spinner-border {
  width: 3rem;
  height: 3rem;
  color: var(--primary);
}

/* ========================================
   SCREEN CONTAINER
   ======================================== */
.screen {
  opacity: 0;
  animation: fadeIn var(--transition-base) forwards;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

.screen-title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--grey-dark);
  margin: 0 0 var(--spacing-sm) 0;
}

.screen-description {
  font-size: var(--font-size-base);
  color: var(--grey-medium);
  margin: 0;
}

.screen-actions {
  display: flex;
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
  flex-wrap: wrap;
}

/* ========================================
   NOTIFICATION CONTAINER
   ======================================== */
.notification-container {
  position: fixed;
  top: var(--spacing-lg);
  right: var(--spacing-lg);
  z-index: var(--z-notification);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  max-width: 400px;
}

/* ========================================
   MOBILE HEADER (PWA)
   ======================================== */
.mobile-header {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--mobile-header-height);
  background-color: var(--white);
  border-bottom: var(--border-width) solid var(--border-color);
  box-shadow: var(--shadow-sm);
  z-index: var(--z-sidebar);
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--spacing-md);
}

.mobile-menu-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: transparent;
  border: none;
  color: var(--grey-dark);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast);
}

.mobile-menu-toggle:hover {
  background-color: var(--grey-lightest);
}

.mobile-header-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--primary);
}

.mobile-header-profile {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  color: var(--grey-dark);
  border-radius: var(--radius-full);
  transition: background-color var(--transition-fast);
}

.mobile-header-profile:hover {
  background-color: var(--grey-lightest);
}

/* ========================================
   FULL-SCREEN MOBILE MENU
   ======================================== */
.mobile-menu-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: var(--z-modal-backdrop);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.mobile-menu-overlay.active {
  display: block;
  opacity: 1;
}

.mobile-menu {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--white);
  z-index: var(--z-mobile-menu);
  transform: translateY(100%);
  transition: transform var(--transition-slow);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.mobile-menu-overlay.active .mobile-menu {
  transform: translateY(0);
}

.mobile-menu-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: var(--border-width) solid var(--border-color);
  background-color: var(--primary);
  color: var(--white);
  flex-shrink: 0;
}

.mobile-menu-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
}

.mobile-menu-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: transparent;
  border: none;
  color: var(--white);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast);
}

.mobile-menu-close:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

.mobile-menu-content {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-md);
  -webkit-overflow-scrolling: touch;
}

.menu-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
}

.menu-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg) var(--spacing-md);
  background-color: var(--grey-lightest);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: var(--grey-dark);
  transition: all var(--transition-fast);
  min-height: 100px;
}

.menu-item:hover {
  background-color: var(--grey-light);
  color: var(--grey-dark);
  text-decoration: none;
}

.menu-item:active {
  transform: scale(0.98);
}

.menu-item.active {
  background-color: var(--primary);
  color: var(--white);
}

.menu-item-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-sm);
}

.menu-item-label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  text-align: center;
  line-height: var(--line-height-tight);
}

.menu-section {
  margin-top: var(--spacing-lg);
}

.menu-section-title {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--grey-medium);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin: 0 0 var(--spacing-sm) var(--spacing-xs);
}

.mobile-menu-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) var(--spacing-lg);
  border-top: var(--border-width) solid var(--border-color);
  background-color: var(--grey-lightest);
  flex-shrink: 0;
}

.menu-user-info {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.menu-user-avatar {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: var(--primary);
  color: var(--white);
  border-radius: var(--radius-full);
}

.menu-user-details {
  display: flex;
  flex-direction: column;
}

.menu-user-name {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--grey-dark);
}

.menu-user-role {
  font-size: var(--font-size-xs);
  color: var(--grey-medium);
}

.menu-logout-btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: transparent;
  border: var(--border-width) solid var(--danger);
  color: var(--danger);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.menu-logout-btn:hover {
  background-color: var(--danger);
  color: var(--white);
}

/* ========================================
   GRID UTILITIES
   ======================================== */
.row {
  display: flex;
  flex-wrap: wrap;
  margin-left: calc(var(--spacing-md) * -1);
  margin-right: calc(var(--spacing-md) * -1);
}

.col {
  flex: 1;
  padding-left: var(--spacing-md);
  padding-right: var(--spacing-md);
}

.col-auto {
  flex: 0 0 auto;
  padding-left: var(--spacing-md);
  padding-right: var(--spacing-md);
}

/* ========================================
   FLEX UTILITIES
   ======================================== */
.d-flex {
  display: flex;
}

.flex-column {
  flex-direction: column;
}

.align-items-center {
  align-items: center;
}

.justify-content-between {
  justify-content: space-between;
}

.justify-content-center {
  justify-content: center;
}

.gap-sm {
  gap: var(--spacing-sm);
}

.gap-md {
  gap: var(--spacing-md);
}

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

/* ========================================
   SPACING UTILITIES
   ======================================== */
.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

.p-0 { padding: 0; }
.p-1 { padding: var(--spacing-sm); }
.p-2 { padding: var(--spacing-md); }
.p-3 { padding: var(--spacing-lg); }
.p-4 { padding: var(--spacing-xl); }