/* ===== CSS VARIABLES ===== */
:root {
  /* Colors */
  --primary-color: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #818cf8;
  --secondary-color: #64748b;
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --danger-color: #ef4444;
  --info-color: #06b6d4;
  
  /* Neutral Colors */
  --white: #ffffff;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;
  
  /* Breakpoints */
  --breakpoint-sm: 576px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 992px;
  --breakpoint-xl: 1200px;
  --breakpoint-xxl: 1400px;
}

/* ===== BASE STYLES ===== */
* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--gray-700);
  background-color: var(--gray-50);
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* ===== LAYOUT ===== */
.app-container {
  display: flex;
  min-height: 100vh;
  position: relative;
}

.sidebar-wrapper {
  position: fixed;
  left: 0;
  top: 0;
  height: 100vh;
  z-index: 1000;
  transition: transform var(--transition-normal);
}

.main-content {
  flex: 1;
  margin-left: 280px;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  transition: margin-left var(--transition-normal);
  width: calc(100% - 280px);
}

.main-content.sidebar-collapsed {
  margin-left: 80px;
  width: calc(100% - 80px);
}

.main-header {
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
  padding: var(--spacing-md) var(--spacing-xl);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

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

.mobile-nav-toggle {
  background: transparent;
  border: 1px solid var(--gray-300);
  color: var(--gray-600);
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
}

.mobile-nav-toggle:hover {
  background: var(--gray-100);
  border-color: var(--gray-400);
  color: var(--gray-700);
}

.mobile-nav-toggle i {
  font-size: var(--font-size-lg);
}

.breadcrumb-wrapper .breadcrumb {
  background: transparent;
  padding: 0;
  margin: 0;
  flex-wrap: wrap;
}

.breadcrumb-item a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
}

.breadcrumb-item.active {
  color: var(--gray-600);
}

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

.main-body {
  flex: 1;
  padding: var(--spacing-xl);
  background: var(--gray-50);
}

/* ===== SIDEBAR ===== */
#sidebar {
  background: linear-gradient(135deg, var(--gray-900) 0%, var(--gray-800) 100%);
  color: var(--white);
  width: 280px;
  min-height: 100vh;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-xl);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

#sidebar.collapsed {
  width: 80px;
}

#sidebar .sidebar-header {
  padding: var(--spacing-lg) var(--spacing-lg) var(--spacing-md);
  border-bottom: 1px solid var(--gray-700);
  flex-shrink: 0;
}

#sidebar .sidebar-brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--white);
  text-decoration: none;
  margin-bottom: var(--spacing-md);
  transition: color var(--transition-fast);
}

#sidebar .sidebar-brand:hover {
  color: var(--primary-light);
}

#sidebar .sidebar-toggle {
  background: transparent;
  border: 1px solid var(--gray-600);
  color: var(--gray-300);
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  margin-bottom: var(--spacing-lg);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

#sidebar .sidebar-toggle:hover {
  background: var(--gray-700);
  border-color: var(--gray-500);
  color: var(--white);
}

#sidebar .nav-section {
  margin-bottom: var(--spacing-lg);
}

#sidebar .nav-section-title {
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--gray-400);
  padding: 0 var(--spacing-lg) var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
}

#sidebar .nav-item {
  margin-bottom: var(--spacing-xs);
}

#sidebar .nav-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-lg);
  color: var(--gray-300);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  font-weight: 500;
}

#sidebar .nav-link:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--white);
  transform: translateX(4px);
}

#sidebar .nav-link.active {
  background: var(--primary-color);
  color: var(--white);
  box-shadow: var(--shadow-md);
}

#sidebar .nav-link i {
  font-size: var(--font-size-lg);
  width: 20px;
  text-align: center;
  flex-shrink: 0;
}

#sidebar .sidebar-label {
  transition: opacity var(--transition-fast);
  white-space: nowrap;
}

#sidebar.collapsed .sidebar-label {
  opacity: 0;
  width: 0;
  overflow: hidden;
}

#sidebar .sidebar-footer {
  margin-top: auto;
  padding: var(--spacing-lg);
  border-top: 1px solid var(--gray-700);
  flex-shrink: 0;
}

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

#sidebar .user-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gray-700);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

#sidebar .user-details {
  flex: 1;
  min-width: 0;
}

#sidebar .user-name {
  font-weight: 600;
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-xs);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

#sidebar .user-role .badge {
  font-size: var(--font-size-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
}

/* ===== CARDS ===== */
.card {
  background: var(--white);
  border: none;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
  overflow: hidden;
}

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

.card-header {
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
  padding: var(--spacing-lg);
  font-weight: 600;
}

.card-body {
  padding: var(--spacing-md);
}

.card-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--gray-800);
  margin-bottom: var(--spacing-md);
}

/* ===== STATS CARDS ===== */
.stats-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
  border: 1px solid var(--gray-200);
}

.stats-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
  transition: all var(--transition-fast);
}

.stats-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.stats-card:hover::before {
  height: 6px;
}

.stats-card.success::before {
  background: linear-gradient(90deg, var(--success-color), #34d399);
}

.stats-card.warning::before {
  background: linear-gradient(90deg, var(--warning-color), #fbbf24);
}

.stats-card.danger::before {
  background: linear-gradient(90deg, var(--danger-color), #f87171);
}

.stats-card.info::before {
  background: linear-gradient(90deg, var(--info-color), #22d3ee);
}

.stats-card .stats-icon {
  position: absolute;
  top: var(--spacing-lg);
  right: var(--spacing-lg);
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  background: var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xl);
  color: var(--gray-600);
}

.stats-card .stats-number {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  color: var(--gray-900);
  line-height: 1;
  margin-bottom: var(--spacing-sm);
}

.stats-card .stats-label {
  font-size: var(--font-size-sm);
  color: var(--gray-600);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ===== TABLES ===== */
.table-container {
  overflow-x: auto;
  border-radius: var(--radius-md);
  position: relative;
}

.table-container.has-scroll {
  position: relative;
}

.table-container.has-scroll::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 20px;
  background: linear-gradient(to right, transparent, rgba(255, 255, 255, 0.8));
  pointer-events: none;
  z-index: 1;
}

.scroll-indicator {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--primary-color);
  color: white;
  border-radius: 50%;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  opacity: 0.8;
  transition: opacity 0.3s ease;
}

.scroll-indicator i {
  font-size: 12px;
}

.table {
  margin-bottom: 0;
}

.table thead th {
  background: var(--gray-50);
  border-bottom: 2px solid var(--gray-200);
  font-weight: 600;
  color: var(--gray-700);
  padding: var(--spacing-lg);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: var(--font-size-sm);
}

.table tbody td {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--gray-200);
  vertical-align: middle;
}

.table tbody tr:hover {
  background: var(--gray-50);
}

.table tbody tr:last-child td {
  border-bottom: none;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: var(--font-size-base);
  font-weight: 500;
  border: none;
  border-radius: var(--radius-md);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

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

.btn-primary {
  background: var(--primary-color);
  color: var(--white);
}

.btn-primary:hover {
  background: var(--primary-dark);
  color: var(--white);
}

.btn-success {
  background: var(--success-color);
  color: var(--white);
}

.btn-success:hover {
  background: #059669;
  color: var(--white);
}

.btn-warning {
  background: var(--warning-color);
  color: var(--white);
}

.btn-warning:hover {
  background: #d97706;
  color: var(--white);
}

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

.btn-danger:hover {
  background: #dc2626;
  color: var(--white);
}

.btn-outline-primary {
  background: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.btn-outline-primary:hover {
  background: var(--primary-color);
  color: var(--white);
}

.btn-sm {
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: var(--font-size-sm);
}

.btn-lg {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-lg);
}

/* ===== FORMS ===== */
.form-control,
.form-select {
  min-height: 38px;
  height: 38px;
  box-sizing: border-box;
}

.form-control:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
  outline: none;
}

.form-label {
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: var(--spacing-sm);
  display: block;
}

.input-group {
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
}

.input-group .form-control {
  border-radius: 0;
  flex: 1;
}

.input-group .btn {
  border-radius: 0;
  flex-shrink: 0;
}

/* Input group alignment for search and button */
.input-group .form-control,
.input-group .btn {
    height: 38px;
    box-sizing: border-box;
}
.input-group .btn {
    border-width: 1px;
}
/* ===== BADGES ===== */
.badge {
  font-weight: 500;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  display: inline-block;
}

.badge-success {
  background: var(--success-color);
  color: var(--white);
}

.badge-warning {
  background: var(--warning-color);
  color: var(--white);
}

.badge-danger {
  background: var(--danger-color);
  color: var(--white);
}

.badge-info {
  background: var(--info-color);
  color: var(--white);
}

/* ===== ALERTS ===== */
.alert {
  border: none;
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  font-weight: 500;
}

.alert-success {
  background: #ecfdf5;
  color: #065f46;
  border-left: 4px solid var(--success-color);
}

.alert-warning {
  background: #fffbeb;
  color: #92400e;
  border-left: 4px solid var(--warning-color);
}

.alert-danger {
  background: #fef2f2;
  color: #991b1b;
  border-left: 4px solid var(--danger-color);
}

.alert-info {
  background: #eff6ff;
  color: #1e40af;
  border-left: 4px solid var(--info-color);
}

/* ===== UTILITIES ===== */
.text-primary { color: var(--primary-color) !important; }
.text-success { color: var(--success-color) !important; }
.text-warning { color: var(--warning-color) !important; }
.text-danger { color: var(--danger-color) !important; }
.text-info { color: var(--info-color) !important; }

.bg-primary { background-color: var(--primary-color) !important; }
.bg-success { background-color: var(--success-color) !important; }
.bg-warning { background-color: var(--warning-color) !important; }
.bg-danger { background-color: var(--danger-color) !important; }
.bg-info { background-color: var(--info-color) !important; }

.shadow-sm { box-shadow: var(--shadow-sm) !important; }
.shadow-md { box-shadow: var(--shadow-md) !important; }
.shadow-lg { box-shadow: var(--shadow-lg) !important; }
.shadow-xl { box-shadow: var(--shadow-xl) !important; }

.rounded-sm { border-radius: var(--radius-sm) !important; }
.rounded-md { border-radius: var(--radius-md) !important; }
.rounded-lg { border-radius: var(--radius-lg) !important; }
.rounded-xl { border-radius: var(--radius-xl) !important; }

/* ===== DASHBOARD SPECIFIC ===== */
.dashboard-container {
  max-width: 100%;
}

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
}

.page-title h1 {
  margin-bottom: var(--spacing-sm);
  color: var(--gray-900);
}

.page-title p {
  color: var(--gray-600);
  margin: 0;
}

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

.current-time {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  font-weight: 500;
  color: var(--black-700);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
}

.dashboard-content {
  margin-top: var(--spacing-2xl);
}

.chart-card, .activity-card {
  height: 100%;
}

.activity-list {
  max-height: 400px;
  overflow-y: auto;
}

.activity-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--gray-200);
  transition: background var(--transition-fast);
}

.activity-item:hover {
  background: var(--gray-50);
}

.activity-item:last-child {
  border-bottom: none;
}

.activity-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.activity-content {
  flex: 1;
  min-width: 0;
}

.activity-title {
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: var(--spacing-xs);
}

.activity-details {
  color: var(--gray-600);
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-xs);
  line-height: 1.4;
}

.activity-time {
  color: var(--gray-500);
  font-size: var(--font-size-xs);
  font-weight: 500;
}

.empty-state {
  text-align: center;
  padding: var(--spacing-2xl);
  color: var(--gray-500);
}

.empty-state i {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-md);
}

/* ===== RESPONSIVE DESIGN ===== */

/* Large Desktop (1400px and up) */
@media (min-width: 1400px) {
  .stats-grid {
    grid-template-columns: repeat(6, 1fr);
  }
  
  .main-body {
    padding: var(--spacing-2xl);
  }
}

/* Desktop (1200px to 1399px) */
@media (max-width: 1399px) and (min-width: 1200px) {
  .stats-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Tablet Portrait (768px to 991px) */
@media (max-width: 991px) and (min-width: 768px) {
  .main-content {
    margin-left: 0;
    width: 100%;
  }
  
  .main-content.sidebar-collapsed {
    margin-left: 0;
    width: 100%;
  }
  
  .sidebar-wrapper {
    transform: translateX(-100%);
  }
  
  .sidebar-wrapper.show {
    transform: translateX(0);
  }
  
  #sidebar {
    width: 280px;
  }
  
  #sidebar.collapsed {
    width: 280px;
  }
  
  .mobile-nav-toggle {
    display: flex;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
  }
  
  .main-body {
    padding: var(--spacing-lg);
  }
  
  .page-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-md);
  }
  
  .stats-card {
    padding: var(--spacing-lg);
  }
  
  .stats-card .stats-number {
    font-size: var(--font-size-3xl);
  }
  
  .stats-card .stats-icon {
    width: 40px;
    height: 40px;
    font-size: var(--font-size-lg);
  }
  
  .table thead th,
  .table tbody td {
    padding: var(--spacing-md);
  }
  
  .card-header,
  .card-body {
    padding: var(--spacing-md);
  }
}

/* Mobile Large (576px to 767px) */
@media (max-width: 767px) and (min-width: 576px) {
  .main-content {
    margin-left: 0;
    width: 100%;
  }
  
  .main-content.sidebar-collapsed {
    margin-left: 0;
    width: 100%;
  }
  
  .sidebar-wrapper {
    transform: translateX(-100%);
  }
  
  .sidebar-wrapper.show {
    transform: translateX(0);
  }
  
  #sidebar {
    width: 280px;
  }
  
  #sidebar.collapsed {
    width: 280px;
  }
  
  .mobile-nav-toggle {
    display: flex;
  }
  
  .main-header {
    padding: var(--spacing-md);
  }
  
  .header-content {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-sm);
  }
  
  .header-left {
    width: 100%;
    justify-content: space-between;
  }
  
  .main-body {
    padding: var(--spacing-md);
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .page-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
  }
  
  .page-title h1 {
    font-size: var(--font-size-2xl);
  }
  
  .stats-card {
    padding: var(--spacing-lg);
  }
  
  .stats-card .stats-number {
    font-size: var(--font-size-2xl);
  }
  
  .stats-card .stats-icon {
    width: 36px;
    height: 36px;
    font-size: var(--font-size-base);
  }
  
  .table-container {
    overflow-x: auto;
  }
  
  .table {
    min-width: 600px;
  }
  
  .table thead th,
  .table tbody td {
    padding: var(--spacing-sm);
    font-size: var(--font-size-sm);
  }
  
  .card-header,
  .card-body {
    padding: var(--spacing-md);
  }
  
  .btn {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
  }
  
  .form-control {
    padding: var(--spacing-sm);
    font-size: var(--font-size-sm);
  }
  
  .activity-item {
    padding: var(--spacing-md);
  }
  
  .activity-icon {
    width: 32px;
    height: 32px;
  }
}

/* Mobile Small (up to 575px) */
@media (max-width: 575px) {
  .main-content {
    margin-left: 0;
    width: 100%;
  }
  
  .main-content.sidebar-collapsed {
    margin-left: 0;
    width: 100%;
  }
  
  .sidebar-wrapper {
    transform: translateX(-100%);
  }
  
  .sidebar-wrapper.show {
    transform: translateX(0);
  }
  
  #sidebar {
    width: 100%;
    max-width: 280px;
  }
  
  #sidebar.collapsed {
    width: 100%;
    max-width: 280px;
  }
  
  .mobile-nav-toggle {
    display: flex;
  }
  
  .main-header {
    padding: var(--spacing-sm) var(--spacing-md);
  }
  
  .header-content {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-sm);
  }
  
  .header-left {
    width: 100%;
    justify-content: space-between;
  }
  
  .breadcrumb-wrapper .breadcrumb {
    font-size: var(--font-size-sm);
  }
  
  .main-body {
    padding: var(--spacing-sm);
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
  }
  
  .page-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
  }
  
  .page-title h1 {
    font-size: var(--font-size-xl);
    line-height: 1.2;
  }
  
  .page-title p {
    font-size: var(--font-size-sm);
  }
  
  .current-time {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
  }
  
  .stats-card {
    padding: var(--spacing-md);
  }
  
  .stats-card .stats-number {
    font-size: var(--font-size-xl);
  }
  
  .stats-card .stats-label {
    font-size: var(--font-size-xs);
  }
  
  .stats-card .stats-icon {
    width: 32px;
    height: 32px;
    font-size: var(--font-size-sm);
    top: var(--spacing-md);
    right: var(--spacing-md);
  }
  
  .table-container {
    overflow-x: auto;
    border-radius: var(--radius-md);
  }
  
  .table {
    min-width: 500px;
    font-size: var(--font-size-xs);
  }
  
  .table thead th,
  .table tbody td {
    padding: var(--spacing-xs) var(--spacing-sm);
  }
  
  .card-header,
  .card-body {
    padding: var(--spacing-sm);
  }
  
  .card-title {
    font-size: var(--font-size-base);
  }
  
  .btn {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-xs);
    width: 100%;
    justify-content: center;
  }
  
  .btn-sm {
    padding: var(--spacing-xs);
    font-size: var(--font-size-xs);
  }
  
  .form-control {
    padding: var(--spacing-sm);
    font-size: var(--font-size-sm);
  }
  
  .form-label {
    font-size: var(--font-size-sm);
  }
  
  .activity-item {
    padding: var(--spacing-sm);
  }
  
  .activity-icon {
    width: 28px;
    height: 28px;
  }
  
  .activity-title {
    font-size: var(--font-size-sm);
  }
  
  .activity-details {
    font-size: var(--font-size-xs);
  }
  
  .activity-time {
    font-size: var(--font-size-xs);
  }
  
  .alert {
    padding: var(--spacing-md);
    font-size: var(--font-size-sm);
  }
  
  .badge {
    font-size: var(--font-size-xs);
    padding: var(--spacing-xs);
  }
}

/* ===== MOBILE NAVIGATION OVERLAY ===== */
.mobile-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.mobile-overlay.show {
  opacity: 1;
  visibility: visible;
}

/* ===== TOAST NOTIFICATIONS ===== */
.toast {
  position: fixed;
  top: 20px;
  right: 20px;
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: var(--spacing-lg);
  z-index: 9999;
  transform: translateX(100%);
  transition: transform var(--transition-normal);
  max-width: 400px;
  border-left: 4px solid var(--primary-color);
}

.toast.show {
  transform: translateX(0);
}

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

.toast-content i {
  font-size: var(--font-size-lg);
  color: var(--primary-color);
}

.toast-success {
  border-left-color: var(--success-color);
}

.toast-success .toast-content i {
  color: var(--success-color);
}

.toast-error {
  border-left-color: var(--danger-color);
}

.toast-error .toast-content i {
  color: var(--danger-color);
}

.toast-warning {
  border-left-color: var(--warning-color);
}

.toast-warning .toast-content i {
  color: var(--warning-color);
}

.toast-close {
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
  background: transparent;
  border: none;
  color: var(--gray-500);
  cursor: pointer;
  padding: var(--spacing-xs);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.toast-close:hover {
  background: var(--gray-100);
  color: var(--gray-700);
}

/* ===== FORM VALIDATION STYLES ===== */
.form-control.is-invalid {
  border-color: var(--danger-color);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form-control.is-invalid:focus {
  border-color: var(--danger-color);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.invalid-feedback {
  display: block;
  color: var(--danger-color);
  font-size: var(--font-size-sm);
  margin-top: var(--spacing-xs);
}

/* ===== SCROLLED HEADER ===== */
.main-header.scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-lg);
}

/* ===== NAVIGATION OPEN STATE ===== */
body.nav-open {
  overflow: hidden;
}

/* ===== RESPONSIVE UTILITIES ===== */
@media (max-width: 575px) {
  .toast {
    top: 10px;
    right: 10px;
    left: 10px;
    max-width: none;
    transform: translateY(-100%);
  }
  
  .toast.show {
    transform: translateY(0);
  }
  
  .scroll-indicator {
    bottom: var(--spacing-xs);
    right: var(--spacing-xs);
    font-size: var(--font-size-xs);
    padding: var(--spacing-xs);
  }
  
  .scroll-indicator i {
    font-size: var(--font-size-xs);
  }
}

/* ===== ANIMATIONS ===== */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in {
  animation: fadeIn 0.5s ease-out;
}

@keyframes slideIn {
  from { transform: translateX(-20px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

.slide-in {
  animation: slideIn 0.3s ease-out;
}

@keyframes slideInFromRight {
  from { transform: translateX(20px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

.slide-in-right {
  animation: slideInFromRight 0.3s ease-out;
}

/* ===== LOADING STATES ===== */
.loading {
  opacity: 0.6;
  pointer-events: none;
  position: relative;
}

.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid var(--gray-300);
  border-top: 2px solid var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* ===== PRINT STYLES ===== */
@media print {
  .sidebar-wrapper,
  .main-header,
  .page-actions,
  .btn,
  .mobile-nav-toggle,
  .mobile-overlay {
    display: none !important;
  }
  
  .main-content {
    margin-left: 0 !important;
    width: 100% !important;
  }
  
  .main-body {
    padding: 0 !important;
  }
  
  .card {
    box-shadow: none !important;
    border: 1px solid var(--gray-300) !important;
  }
  
  .stats-card {
    break-inside: avoid;
  }
  
  .toast {
    display: none !important;
  }
}

/* ===== LOGIN PAGE STYLES ===== */
.login-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
  padding: 20px;
}

.login-card {
  background: white;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  padding: 40px;
  width: 100%;
  max-width: 450px;
}

.login-header {
  text-align: center;
  margin-bottom: 30px;
}

.login-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--gray-800);
  margin-bottom: 8px;
}

.login-subtitle {
  color: var(--gray-600);
  font-size: 1.1rem;
  margin: 0;
}

.login-form {
  width: 100%;
}

.login-actions {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
}

.login-actions .btn {
  flex: 1;
  padding: 12px 24px;
  font-weight: 500;
}

.login-links {
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.login-links a {
  color: var(--primary-color);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s ease;
}

.login-links a:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

.login-container .form-control {
  border: 2px solid var(--gray-200);
  border-radius: 8px;
  transition: all 0.2s ease;
}

.login-container .form-control:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 0.2rem rgba(var(--primary-rgb), 0.25);
}

@media (max-width: 576px) {
  .login-card {
    padding: 30px 20px;
  }
  
  .login-actions {
    flex-direction: column;
  }
  
  .login-title {
    font-size: 1.75rem;
  }
}

/* ===== EXPENSE TYPES STYLES ===== */
.expense-type-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-600);
  font-size: var(--font-size-lg);
}

.btn-group .btn {
  border-radius: var(--radius-sm);
}

.btn-group .btn:not(:last-child) {
  margin-right: var(--spacing-xs);
}

@media (max-width: 991px) {
  .page-header {
    margin-bottom: var(--spacing-lg);
  }
  
  .col-md-6, .col-md-4, .col-md-2 {
    margin-bottom: var(--spacing-md);
  }
}

@media (max-width: 575px) {
  .expense-type-icon {
    width: 32px;
    height: 32px;
    font-size: var(--font-size-base);
  }
  
  .btn-group .btn {
    padding: var(--spacing-xs);
    font-size: var(--font-size-xs);
  }
  
  .table td {
    padding: var(--spacing-sm);
  }
}

/* ===== FORM STYLES ===== */
.form-group label {
  color: var(--gray-700);
  margin-bottom: var(--spacing-sm);
}

.form-control, .form-select {
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.form-control:focus, .form-select:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 0.2rem rgba(var(--primary-rgb), 0.25);
}

.form-actions {
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--gray-200);
}

@media (max-width: 767px) {
  .page-header {
    margin-bottom: var(--spacing-lg);
  }
  
  .col-md-6 {
    margin-bottom: var(--spacing-md);
  }
  
  .form-actions {
    text-align: center;
  }
  
  .form-actions .btn {
    width: 100%;
    margin-bottom: var(--spacing-sm);
  }
}

/* ===== EMPLOYEE STYLES ===== */
.employee-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-600);
  font-size: var(--font-size-lg);
}

@media (max-width: 991px) {
  .col-md-4, .col-md-3, .col-md-2 {
    margin-bottom: var(--spacing-md);
  }
}

@media (max-width: 575px) {
  .employee-avatar {
    width: 32px;
    height: 32px;
    font-size: var(--font-size-base);
  }
}

/* ===== ENHANCED TABLE RESPONSIVENESS ===== */
.table-container {
  overflow-x: auto;
  border-radius: var(--radius-md);
  position: relative;
}

.table-container.has-scroll {
  position: relative;
}

.table-container.has-scroll::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 20px;
  background: linear-gradient(to right, transparent, rgba(255, 255, 255, 0.8));
  pointer-events: none;
  z-index: 1;
}

.scroll-indicator {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--primary-color);
  color: white;
  border-radius: 50%;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  opacity: 0.8;
  transition: opacity 0.3s ease;
}

.scroll-indicator i {
  font-size: 12px;
}

/* Card-based table layout for mobile */
@media (max-width: 767px) {
  .table-responsive-cards {
    display: block;
  }
  
  .table-responsive-cards .table,
  .table-responsive-cards thead,
  .table-responsive-cards tbody,
  .table-responsive-cards tr,
  .table-responsive-cards th,
  .table-responsive-cards td {
    display: block;
  }
  
  .table-responsive-cards thead {
    display: none;
  }
  
  .table-responsive-cards tr {
    margin-bottom: var(--spacing-md);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    background: white;
    box-shadow: var(--shadow-sm);
  }
  
  .table-responsive-cards td {
    border: none;
    padding: var(--spacing-sm) var(--spacing-md);
    position: relative;
    padding-left: 120px;
  }
  
  .table-responsive-cards td::before {
    content: attr(data-label);
    position: absolute;
    left: var(--spacing-md);
    top: var(--spacing-sm);
    font-weight: 600;
    color: var(--gray-600);
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
  }
  
  .table-responsive-cards td:first-child {
    border-top-left-radius: var(--radius-md);
    border-top-right-radius: var(--radius-md);
    background: var(--gray-50);
    font-weight: 600;
  }
  
  .table-responsive-cards td:last-child {
    border-bottom-left-radius: var(--radius-md);
    border-bottom-right-radius: var(--radius-md);
  }
}

/* Enhanced mobile table improvements */
@media (max-width: 575px) {
  .table-container {
    margin: 0 calc(-1 * var(--spacing-md));
    border-radius: 0;
  }
  
  .table {
    font-size: var(--font-size-sm);
  }
  
  .table td,
  .table th {
    padding: var(--spacing-xs) var(--spacing-sm);
    white-space: nowrap;
  }
  
  /* Stack buttons vertically on very small screens */
  .btn-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
  }
  
  .btn-group .btn {
    width: 100%;
    justify-content: center;
  }
}

/* ===== TOUCH-FRIENDLY INTERACTIONS ===== */
@media (hover: none) and (pointer: coarse) {
  /* Touch-friendly button sizes */
  .btn {
    min-height: 44px;
    min-width: 44px;
    padding: var(--spacing-md) var(--spacing-lg);
  }
  
  .btn-sm {
    min-height: 36px;
    min-width: 36px;
    padding: var(--spacing-sm) var(--spacing-md);
  }
  
  /* Touch-friendly form controls */
  .form-control,
  .form-select {
    min-height: 44px;
    padding: var(--spacing-md);
  }
  
  /* Touch-friendly navigation */
  .nav-link {
    min-height: 48px;
    padding: var(--spacing-md) var(--spacing-lg);
  }
  
  /* Touch-friendly table interactions */
  .table tbody tr {
    cursor: pointer;
  }
  
  .table tbody tr:active {
    background-color: var(--gray-100);
  }
  
  /* Touch-friendly sidebar */
  .sidebar-toggle {
    min-height: 44px;
    min-width: 44px;
  }
  
  /* Touch-friendly mobile nav toggle */
  .mobile-nav-toggle {
    min-height: 44px;
    min-width: 44px;
  }
  
  /* Touch-friendly checkboxes and radios */
  .form-check-input {
    min-width: 24px;
    min-height: 24px;
  }
  
  /* Touch-friendly dropdowns */
  .dropdown-toggle {
    min-height: 44px;
  }
  
  /* Touch-friendly pagination */
  .pagination .page-link {
    min-height: 44px;
    min-width: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
  }
}

/* Swipe gestures for mobile */
@media (max-width: 768px) {
  .swipeable {
    touch-action: pan-y pinch-zoom;
  }
  
  /* Swipe to dismiss for toasts */
  .toast {
    touch-action: pan-x;
  }
  
  /* Swipe to refresh indicator */
  .pull-to-refresh {
    position: relative;
    overflow: hidden;
  }
  
  .pull-to-refresh::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-color);
    transform: translateX(-100%);
    transition: transform 0.3s ease;
  }
  
  .pull-to-refresh.pulling::before {
    transform: translateX(0);
  }
}

/* Improved focus states for accessibility */
.btn:focus,
.form-control:focus,
.form-select:focus,
.nav-link:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .btn {
    border: 2px solid currentColor;
  }
  
  .form-control,
  .form-select {
    border: 2px solid currentColor;
  }
  
  .card {
    border: 2px solid var(--gray-300);
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .fade-in,
  .slide-in,
  .slide-in-right {
    animation: none;
  }
}

/* ===== USER AVATAR STYLES ===== */
.user-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-600);
  font-size: var(--font-size-lg);
}

/* User Menu Dropdown */
.user-menu .dropdown-toggle::after {
    display: none; /* Hide the default Bootstrap caret */
}

.user-menu .dropdown-toggle:hover,
.user-menu .dropdown-toggle:focus {
    text-decoration: none; /* Remove underline on hover */
}

.user-menu .dropdown-menu {
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-sm) 0;
    min-width: 220px;
    z-index: 1050;
    margin-top: 0.5rem;
}

.user-menu .dropdown-item {
    padding: var(--spacing-sm) var(--spacing-lg);
    color: var(--gray-700);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.user-menu .dropdown-item:hover {
    background-color: var(--gray-100);
    color: var(--gray-900);
}

.user-menu .dropdown-divider {
    margin: var(--spacing-xs) 0;
    border-color: var(--gray-200);
}

.avatar-img {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    aspect-ratio: 1/1;
    display: block;
    background: #f3f3f3;
}

.avatar-upload .avatar-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
}

.avatar-upload:hover .avatar-overlay {
    opacity: 0.7;
}

/* ===== PURCHASE ORDER ENHANCEMENTS ===== */

/* Purchase Order Form Enhancements */
.purchase-order-item-row {
    transition: all var(--transition-normal);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    background: var(--white);
}

.purchase-order-item-row:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.purchase-order-item-row.removing {
    opacity: 0.5;
    transform: translateX(-20px);
}

/* Auto-filled input styling */
.form-control.auto-filled {
    background-color: var(--gray-50);
    border-color: var(--info-color);
    color: var(--info-color);
}

.form-control.auto-filled:focus {
    background-color: var(--white);
    border-color: var(--info-color);
    box-shadow: 0 0 0 0.2rem rgba(6, 182, 212, 0.25);
}

/* Enhanced validation styling */
.form-control.is-invalid {
    border-color: var(--danger-color);
    box-shadow: 0 0 0 0.2rem rgba(239, 68, 68, 0.25);
}

.form-control.is-valid {
    border-color: var(--success-color);
    box-shadow: 0 0 0 0.2rem rgba(16, 185, 129, 0.25);
}

/* Purchase Order Summary Card */
.purchase-order-summary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.purchase-order-summary h3 {
    color: var(--white);
    margin-bottom: var(--spacing-md);
    font-weight: 600;
}

.purchase-order-summary .summary-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.purchase-order-summary .summary-item:last-child {
    border-bottom: none;
    font-weight: 600;
    font-size: var(--font-size-lg);
}

/* Enhanced button states */
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn.loading {
    position: relative;
    color: transparent;
}

.btn.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 16px;
    height: 16px;
    margin: -8px 0 0 -8px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Fieldset styling */
fieldset {
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    background: var(--white);
}

fieldset legend {
    font-weight: 600;
    color: var(--gray-700);
    padding: 0 var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--primary-color);
    width: auto;
}

/* Responsive enhancements for purchase orders */
@media (max-width: 768px) {
    .purchase-order-item-row {
        padding: var(--spacing-sm);
    }
    
    .purchase-order-item-row .col-md-3,
    .purchase-order-item-row .col-md-2 {
        margin-bottom: var(--spacing-sm);
    }
    
    .purchase-order-summary {
        padding: var(--spacing-md);
    }
    
    fieldset {
        padding: var(--spacing-md);
    }
}

/* Animation for new items */
@keyframes slideInFromTop {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.purchase-order-item-row.new-item {
    animation: slideInFromTop 0.3s ease-out;
}

/* Enhanced focus states for accessibility */
.form-control:focus,
.form-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(99, 102, 241, 0.25);
}

/* Loading overlay for form submission */
.form-loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.form-loading-overlay.show {
    opacity: 1;
    visibility: visible;
}

.form-loading-overlay .spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--white);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Enhanced toast positioning for purchase orders */
.toast {
    z-index: 9999;
}

/* Print styles for purchase orders */
@media print {
    .purchase-order-item-row {
        break-inside: avoid;
        border: 1px solid var(--gray-300);
        margin-bottom: var(--spacing-sm);
    }
    
    .btn {
        display: none;
    }
    
    fieldset {
        border: 1px solid var(--gray-300);
        break-inside: avoid;
    }
}

/* ===== SALES PAGE STYLES ===== */

/* Table validation styles */
.table-danger {
    background-color: #f8d7da !important;
    border-color: #f5c6cb !important;
}

/* Error message styles */
.duplicate-error, 
.validation-error {
    font-size: 0.875rem;
    margin-top: 0.25rem;
    font-weight: 500;
}

.validation-error {
    color: #dc3545 !important;
}

/* Form validation styles */
.form-control.is-invalid {
    border-color: #dc3545;
    box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25);
}

/* Sales form specific styles */
.sale-items-table {
    border-collapse: collapse;
    width: 100%;
}

.sale-items-table th {
    background-color: var(--gray-100);
    border: 1px solid var(--gray-300);
    padding: 0.75rem;
    font-weight: 600;
    text-align: left;
}

.sale-items-table td {
    border: 1px solid var(--gray-300);
    padding: 0.75rem;
    vertical-align: middle;
}

.sale-items-table tr:hover {
    background-color: var(--gray-50);
}

/* Invoice summary styles */
.invoice-summary {
    background-color: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
}

.invoice-summary legend {
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: var(--spacing-md);
}

/* Payment information styles */
.payment-info {
    background-color: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
}

.payment-info legend {
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: var(--spacing-md);
}

/* Read-only input styling */
.form-control[readonly] {
    background-color: var(--gray-50);
    color: var(--gray-700);
    cursor: not-allowed;
}

/* Price and line total display styling */
.price-display, 
.line-total-display {
    min-height: 38px;
    display: flex;
    align-items: center;
    padding: 0.375rem 0.75rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-sm);
    background-color: var(--gray-50);
}

/* Action buttons container */
.sales-actions {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
    flex-wrap: wrap;
}

/* Responsive adjustments for sales */
@media (max-width: 768px) {
    .sale-items-table {
        font-size: 0.875rem;
    }
    
    .sale-items-table th,
    .sale-items-table td {
        padding: 0.5rem;
    }
    
    .sales-actions {
        flex-direction: column;
        align-items: stretch;
    }
    
    .sales-actions .btn {
        width: 100%;
        margin-bottom: var(--spacing-sm);
    }
}

/* ===== PURCHASE ORDER STYLES ===== */

/* Purchase Order Details/Print Layout */
.purchase-order-container {
    max-width: 900px;
    margin: 2rem auto;
    padding: 2rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    background: var(--white);
    font-size: 14px;
    line-height: 1.6;
    color: var(--gray-600);
    box-shadow: var(--shadow-sm);
}

.purchase-order-header {
    border-bottom: 2px solid var(--gray-200);
    padding-bottom: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.purchase-order-info {
    font-size: 1.1rem;
}

.purchase-order-number {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
}

/* Status badges for purchase orders */
.status-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
}

.status-draft { 
    background-color: var(--gray-500); 
    color: var(--white); 
}

.status-sent { 
    background-color: var(--info-color); 
    color: var(--white); 
}

.status-received { 
    background-color: var(--success-color); 
    color: var(--white); 
}

.status-cancelled { 
    background-color: var(--danger-color); 
    color: var(--white); 
}

.status-partiallyreceived { 
    background-color: var(--warning-color); 
    color: var(--gray-900); 
}

/* Purchase Order Items Table */
.purchase-order-items-table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--spacing-lg) 0;
}

.purchase-order-items-table th {
    background-color: var(--gray-100);
    border: 1px solid var(--gray-300);
    padding: 0.75rem;
    font-weight: 600;
    text-align: left;
}

.purchase-order-items-table td {
    border: 1px solid var(--gray-300);
    padding: 0.75rem;
    vertical-align: top;
}

.purchase-order-items-table tr:nth-child(even) {
    background-color: var(--gray-50);
}

/* Purchase Order Totals Section */
.purchase-order-totals {
    margin-top: var(--spacing-xl);
    border-top: 2px solid var(--gray-200);
    padding-top: var(--spacing-md);
}

.purchase-order-totals-table {
    width: 100%;
    max-width: 400px;
    margin-left: auto;
}

.purchase-order-totals-table td {
    padding: 0.5rem;
    border: none;
}

.purchase-order-totals-table .label {
    font-weight: 600;
}

.purchase-order-totals-table .amount {
    text-align: right;
    font-weight: 600;
}

.purchase-order-totals-table .total-row {
    border-top: 2px solid var(--gray-300);
    font-size: 1.1rem;
    font-weight: bold;
    color: var(--primary-color);
}

/* Purchase Order Notes Section */
.purchase-order-notes {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-md);
    background-color: var(--gray-50);
    border-radius: var(--radius-sm);
}

/* Purchase Order Footer */
.purchase-order-footer {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--gray-200);
    text-align: center;
    color: var(--gray-500);
    font-size: 0.875rem;
}

/* Purchase Order Form Styles */
.purchase-order-form-section {
    background-color: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.purchase-order-form-section h6 {
    color: var(--gray-800);
    margin-bottom: var(--spacing-md);
}

.purchase-order-items-container {
    margin-top: var(--spacing-md);
}

.purchase-order-item-row {
    margin-bottom: var(--spacing-sm);
}

.purchase-order-item-row .form-control,
.purchase-order-item-row .form-select {
    font-size: 0.875rem;
}

.purchase-order-item-row .line-total {
    background-color: var(--gray-50);
    font-weight: 600;
}

/* Purchase Order Summary Panel */
.purchase-order-summary {
    background-color: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
}

.purchase-order-summary h6 {
    color: var(--gray-800);
    margin-bottom: var(--spacing-md);
}

.purchase-order-summary .form-control[readonly] {
    background-color: var(--white);
    border-color: var(--gray-300);
}

.purchase-order-summary .total-amount {
    color: var(--primary-color);
    font-weight: bold;
}

/* Print styles for purchase orders */
@media print {
    .no-print { 
        display: none !important; 
    }
    
    body { 
        background: var(--white) !important; 
    }
    
    .purchase-order-container { 
        box-shadow: none !important; 
        border: none !important; 
        margin: 0 !important;
        padding: 1rem !important;
    }
    
    .purchase-order-items-table th {
        background-color: var(--gray-200) !important;
        -webkit-print-color-adjust: exact;
        color-adjust: exact;
    }
    
    .purchase-order-items-table tr:nth-child(even) {
        background-color: var(--gray-100) !important;
        -webkit-print-color-adjust: exact;
        color-adjust: exact;
    }
}

/* Responsive adjustments for purchase orders */
@media (max-width: 768px) {
    .purchase-order-container {
        margin: 1rem;
        padding: 1rem;
    }
    
    .purchase-order-items-table {
        font-size: 0.875rem;
    }
    
    .purchase-order-items-table th,
    .purchase-order-items-table td {
        padding: 0.5rem;
    }
    
    .purchase-order-totals-table {
        max-width: 100%;
    }
    
    .purchase-order-form-section {
        padding: var(--spacing-md);
    }
}

/* Responsive adjustments for sales */
@media (max-width: 768px) {
    .sale-items-table {
        font-size: 0.875rem;
    }
    
    .sale-items-table th,
    .sale-items-table td {
        padding: 0.5rem;
    }
    
    .sales-actions {
        flex-direction: column;
        align-items: stretch;
    }
    
    .sales-actions .btn {
        width: 100%;
        margin-bottom: var(--spacing-sm);
    }
}