/**
 * Standardized Admin Layout Styles
 * 
 * This file ensures consistent layout across all admin pages:
 * - Fixed sidebar overlap issues
 * - Consistent main content spacing
 * - Professional header integration
 * - Responsive design that works on all devices
 */

/* Reset and base styles */
body {
  margin: 0;
  padding: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--white);
}

html, body {
  height: 100%;
}

/* Main admin wrapper - flex layout */
.admin-wrapper {
  display: flex;
  height: 100vh;
  width: 100%;
  position: relative;
}

/* Sidebar - fixed width, full height */
.sidebar {
  width: 240px;
  min-width: 240px; /* Prevent shrinking */
  background: var(--navy);
  color: var(--white);
  display: flex;
  flex-direction: column;
  position: relative;
  z-index: 10;
}

.sidebar-header {
  padding: var(--space-lg);
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--white);
  text-decoration: none;
}

.sidebar-logo svg {
  width: 24px;
  height: 24px;
}

.sidebar-logo-text {
  font-size: 18px;
  font-weight: 700;
}

.sidebar-nav {
  flex: 1;
  padding: var(--space-md) 0;
  overflow-y: auto;
}

.nav-section {
  margin-bottom: var(--space-lg);
}

.nav-section-title {
  padding: 0 var(--space-lg);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  opacity: 0.6;
  margin-bottom: var(--space-sm);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  color: rgba(255,255,255,0.8);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.15s;
}

.nav-item:hover {
  background: rgba(255,255,255,0.05);
  color: var(--white);
}

.nav-item.active {
  background: var(--sky);
  color: var(--white);
}

.nav-icon {
  width: 18px;
  height: 18px;
  opacity: 0.8;
}

/* Main content area - flexbox, takes remaining space */
.main-content {
  flex: 1;
  min-width: 0; /* Allow shrinking */
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--gray-50);
}

/* Legacy topbar styles - will be replaced by admin-header component */
.topbar {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  padding: var(--space-md) var(--space-xl);
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 60px;
  min-height: 60px;
  position: relative;
  z-index: 5;
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.topbar-center {
  flex: 1;
  display: flex;
  justify-content: center;
  margin: 0 var(--space-lg);
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.topbar-search,
.search-bar {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  background: var(--gray-50);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-sm) var(--space-md);
  min-width: 250px;
}

.search-input {
  flex: 1;
  border: none;
  background: none;
  font-size: 14px;
  outline: none;
  color: var(--text-primary);
}

.search-input::placeholder {
  color: var(--text-secondary);
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-weight: 600;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s;
}

.user-avatar:hover {
  transform: scale(1.05);
}

/* Standardized content areas */
.page-content,
.dashboard-content {
  flex: 1;
  padding: var(--space-xl);
  overflow-y: auto;
  background: var(--gray-50);
  /* Ensure content doesn't overlap sidebar */
  max-width: 100%;
  box-sizing: border-box;
}

/* Page headers - consistent spacing */
.page-header {
  margin-bottom: var(--space-xl);
}

.page-title,
.page-title-header {
  font-size: 24px;
  font-weight: 700;
  color: var(--navy);
  margin: 0 0 var(--space-xs) 0;
  line-height: 1.2;
}

.page-subtitle,
.page-subtitle-header {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0 0 var(--space-xl) 0;
  line-height: 1.3;
}

/* Common button styles */
.btn-primary {
  padding: var(--space-sm) var(--space-md);
  background: var(--sky);
  color: var(--white);
  border: none;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  text-decoration: none;
}

.btn-primary:hover {
  background: #4A8BC2;
  transform: translateY(-1px);
}

.btn-secondary {
  padding: var(--space-sm) var(--space-md);
  background: var(--white);
  color: var(--sky);
  border: 1px solid var(--sky);
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.btn-secondary:hover {
  background: var(--sky);
  color: var(--white);
}

/* Grid layouts - consistent spacing */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.content-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-xl);
  margin-top: var(--space-xl);
}

/* Card components */
.stat-card,
.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  transition: all 0.2s;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.stat-card:hover,
.card:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* Data tables */
.data-table {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.table-header {
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--gray-50);
}

.table-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--navy);
  margin: 0;
}

/* Fix potential overlap issues */
.main-content * {
  box-sizing: border-box;
}

/* Ensure no horizontal scroll */
.admin-wrapper {
  overflow-x: hidden;
}

.page-content,
.dashboard-content {
  /* Prevent content from pushing beyond viewport */
  width: 100%;
  min-width: 0;
}

/* Responsive design */
@media (max-width: 1024px) {
  .content-grid {
    grid-template-columns: 1fr;
  }
  
  .stats-grid {
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  }
  
  .topbar {
    padding: var(--space-md) var(--space-lg);
  }
  
  .page-content,
  .dashboard-content {
    padding: var(--space-lg);
  }
}

@media (max-width: 768px) {
  .sidebar {
    position: fixed;
    left: -240px;
    top: 0;
    height: 100%;
    z-index: 1000;
    transition: left 0.3s ease;
  }
  
  .sidebar.mobile-open {
    left: 0;
  }
  
  .main-content {
    width: 100%;
  }
  
  .topbar {
    padding: var(--space-sm) var(--space-md);
  }
  
  .page-content,
  .dashboard-content {
    padding: var(--space-md);
  }
  
  .page-title,
  .page-title-header {
    font-size: 20px;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }
  
  .topbar-search,
  .search-bar {
    min-width: 200px;
  }
}

@media (max-width: 480px) {
  .page-content,
  .dashboard-content {
    padding: var(--space-sm);
  }
  
  .stats-grid {
    gap: var(--space-sm);
  }
  
  .stat-card,
  .card {
    padding: var(--space-md);
  }
  
  .topbar-search,
  .search-bar {
    min-width: 150px;
  }
}

/* Mobile menu toggle (when needed) */
.mobile-menu-toggle {
  display: none;
  width: 32px;
  height: 32px;
  border: none;
  background: none;
  cursor: pointer;
  color: var(--text-primary);
}

@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }
}

/* Accessibility improvements */
.nav-item:focus,
.btn-primary:focus,
.btn-secondary:focus,
.search-input:focus {
  outline: 2px solid var(--sky);
  outline-offset: 2px;
}

/* Print styles */
@media print {
  .sidebar,
  .topbar {
    display: none;
  }
  
  .main-content {
    width: 100%;
    height: auto;
  }
  
  .page-content,
  .dashboard-content {
    padding: 0;
    background: white;
  }
}