:root {
  /* Color Palette */
  --primary: #4361ee;
  --primary-light: #4895ef;
  --primary-dark: #3a0ca3;
  --secondary: #4cc9f0;
  --accent: #f72585;
  --success: #2ecc71;
  --warning: #f39c12;
  --danger: #e74c3c;
  --light: #f8f9fa;
  --dark: #212529;
  --gray: #6c757d;
  --gray-light: #dee2e6;
  --gray-dark: #343a40;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.075);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.15);
  
  /* Category Colors */
  --cat-1: #ff6384;
  --cat-2: #36a2eb;
  --cat-3: #9966ff;
  --cat-4: #ff9f40;
  --cat-5: #4bc0c0;
  --cat-6: #ffcd56;
  --cat-7: #7b68ee;
  --cat-8: #2ecc71;
  --cat-9: #9b59b6;
  --cat-10: #e74c3c;
  
  /* Transitions */
  --transition-fast: 0.2s;
  --transition-normal: 0.3s;
  --transition-slow: 0.5s;
  
  /* Other Variables */
  --border-radius-sm: 0.25rem;
  --border-radius: 0.5rem;
  --border-radius-lg: 1rem;
  --header-height: 70px;
  --nav-height: 50px;
  --footer-height: 60px;
}

/* Base Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #f5f7fa;
  color: var(--dark);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* App Loader */
.app-loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(255, 255, 255, 0.9);
  z-index: 9999;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: opacity var(--transition-normal);
}

.app-loader.hidden {
  opacity: 0;
  pointer-events: none;
}

.loader-content {
  text-align: center;
}

.spinner {
  width: 50px;
  height: 50px;
  border: 4px solid rgba(67, 97, 238, 0.2);
  border-radius: 50%;
  border-top-color: var(--primary);
  animation: spin 1s ease-in-out infinite;
  margin: 0 auto 20px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Dashboard Header */
.dashboard-header {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  padding: 1.5rem 0;
  box-shadow: var(--shadow-md);
  height: var(--header-height);
}

.dashboard-title {
  font-weight: 700;
  font-size: 1.75rem;
  margin-bottom: 0.25rem;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.2);
}

.dashboard-subtitle {
  opacity: 0.9;
  font-weight: 300;
  margin-bottom: 0;
  font-size: 0.95rem;
}

.last-updated {
  font-size: 0.85rem;
  opacity: 0.9;
}

/* Navigation */
.sheet-nav {
  background-color: white;
  border-bottom: 1px solid var(--gray-light);
  height: var(--nav-height);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.nav-tabs {
  display: flex;
  list-style: none;
  padding: 0;
  margin: 0;
  overflow-x: auto;
  white-space: nowrap;
  height: 100%;
}

.nav-tab {
  padding: 0.85rem 1.5rem;
  color: var(--gray-dark);
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  display: flex;
  align-items: center;
  font-weight: 500;
}

.nav-tab:hover {
  color: var(--primary);
  background-color: rgba(67, 97, 238, 0.05);
}

.nav-tab.active {
  color: var(--primary);
  font-weight: 600;
}

.nav-tab.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background-color: var(--primary);
}

.nav-tab .nav-icon {
  margin-right: 8px;
  font-size: 0.9rem;
}

/* Main Dashboard Content */
.dashboard-content {
  flex: 1;
  padding: 1.5rem 0;
  overflow-x: hidden;
}

/* Error & Empty States */
.error-container, .empty-container {
  background-color: white;
  border-radius: var(--border-radius);
  padding: 3rem;
  text-align: center;
  box-shadow: var(--shadow-md);
  margin-bottom: 2rem;
}

.error-icon, .empty-icon {
  font-size: 3rem;
  color: var(--danger);
  margin-bottom: 1rem;
}

.empty-icon {
  color: var(--gray);
}

/* Dashboard Sections */
.section-header, .panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.section-header h2, .panel-header h2 {
  font-size: 1.2rem;
  font-weight: 600;
  margin: 0;
  color: var(--gray-dark);
}

/* Summary Cards */
.summary-section {
  margin-bottom: 2rem;
}

.summary-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
}

.summary-card {
  background-color: white;
  border-radius: var(--border-radius);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  border-left: 4px solid var(--primary);
  display: flex;
  flex-direction: column;
  cursor: pointer;
}

.summary-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.summary-card.active {
  box-shadow: 0 0 0 2px var(--primary), var(--shadow-md);
}

.summary-card .value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 0.5rem;
}

.summary-card .label {
  color: var(--gray);
  font-size: 0.95rem;
  font-weight: 500;
  margin-bottom: 0.25rem;
}

.summary-card .percentage {
  font-size: 0.85rem;
  color: var(--gray);
}

/* Category Colors */
.cat-1-border { border-left-color: var(--cat-1); }
.cat-2-border { border-left-color: var(--cat-2); }
.cat-3-border { border-left-color: var(--cat-3); }
.cat-4-border { border-left-color: var(--cat-4); }
.cat-5-border { border-left-color: var(--cat-5); }
.cat-6-border { border-left-color: var(--cat-6); }
.cat-7-border { border-left-color: var(--cat-7); }
.cat-8-border { border-left-color: var(--cat-8); }
.cat-9-border { border-left-color: var(--cat-9); }
.cat-10-border { border-left-color: var(--cat-10); }

.cat-1-bg { background-color: rgba(255, 99, 132, 0.1); }
.cat-2-bg { background-color: rgba(54, 162, 235, 0.1); }
.cat-3-bg { background-color: rgba(153, 102, 255, 0.1); }
.cat-4-bg { background-color: rgba(255, 159, 64, 0.1); }
.cat-5-bg { background-color: rgba(75, 192, 192, 0.1); }
.cat-6-bg { background-color: rgba(255, 205, 86, 0.1); }
.cat-7-bg { background-color: rgba(123, 104, 238, 0.1); }
.cat-8-bg { background-color: rgba(46, 204, 113, 0.1); }
.cat-9-bg { background-color: rgba(155, 89, 182, 0.1); }
.cat-10-bg { background-color: rgba(231, 76, 60, 0.1); }

.badge-cat-1 { background-color: var(--cat-1); }
.badge-cat-2 { background-color: var(--cat-2); }
.badge-cat-3 { background-color: var(--cat-3); }
.badge-cat-4 { background-color: var(--cat-4); }
.badge-cat-5 { background-color: var(--cat-5); }
.badge-cat-6 { background-color: var(--cat-6); }
.badge-cat-7 { background-color: var(--cat-7); }
.badge-cat-8 { background-color: var(--cat-8); }
.badge-cat-9 { background-color: var(--cat-9); }
.badge-cat-10 { background-color: var(--cat-10); }

/* Dashboard Panels */
.dashboard-panel {
  background-color: white;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.panel-header {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--gray-light);
}

.panel-body {
  padding: 1.25rem;
  flex: 1;
  overflow: hidden;
}

/* Chart Container */
.chart-container {
  height: 100%;
  min-height: 300px;
  display: flex;
  flex-direction: column;
}

.chart-legend {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1rem;
}

.legend-item {
  display: flex;
  align-items: center;
  cursor: pointer;
  transition: opacity var(--transition-fast);
  padding: 0.3rem 0.6rem;
  border-radius: var(--border-radius-sm);
}

.legend-item:hover {
  background-color: rgba(0, 0, 0, 0.03);
}

.legend-item.active {
  background-color: rgba(0, 0, 0, 0.05);
}

.legend-color {
  width: 12px;
  height: 12px;
  border-radius: 3px;
  margin-right: 8px;
}

.legend-label {
  font-size: 0.85rem;
  color: var(--gray-dark);
}

/* Data Table */
.table-container {
  overflow-x: auto;
  max-height: 500px;
  overflow-y: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table thead th {
  position: sticky;
  top: 0;
  background-color: var(--light);
  font-weight: 600;
  color: var(--gray-dark);
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 2px solid var(--gray-light);
  transition: background-color var(--transition-fast);
  cursor: pointer;
}

.data-table thead th:hover {
  background-color: rgba(0, 0, 0, 0.03);
}

.data-table thead th.sortable::after {
  content: '↕';
  margin-left: 0.5rem;
  opacity: 0.3;
}

.data-table thead th.asc::after {
  content: '↑';
  opacity: 1;
  color: var(--primary);
}

.data-table thead th.desc::after {
  content: '↓';
  opacity: 1;
  color: var(--primary);
}

.data-table tbody tr {
  border-bottom: 1px solid var(--gray-light);
  transition: background-color var(--transition-fast);
}

.data-table tbody tr:hover {
  background-color: rgba(67, 97, 238, 0.03);
}

.data-table td {
  padding: 0.75rem 1rem;
  font-size: 0.95rem;
}

.table-footer {
  display: flex;
  justify-content: flex-end;
  padding: 0.75rem 1rem;
  border-top: 1px solid var(--gray-light);
  background-color: var(--light);
}

.record-count {
  font-size: 0.85rem;
  color: var(--gray);
}

/* Badge */
.badge {
  display: inline-block;
  padding: 0.35em 0.65em;
  font-size: 0.75em;
  font-weight: 700;
  line-height: 1;
  color: #fff;
  text-align: center;
  white-space: nowrap;
  vertical-align: baseline;
  border-radius: 0.375rem;
}

/* Search Input */
.search-container {
  position: relative;
  max-width: 250px;
}

.search-input {
  width: 100%;
  padding: 0.5rem 1rem 0.5rem 2.25rem;
  border: 1px solid var(--gray-light);
  border-radius: var(--border-radius-sm);
  font-size: 0.875rem;
  transition: all var(--transition-fast);
}

.search-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 0.2rem rgba(67, 97, 238, 0.25);
  outline: 0;
}

.search-icon {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--gray);
  pointer-events: none;
}

/* Footer */
.dashboard-footer {
  background-color: white;
  padding: 1rem 0;
  color: var(--gray);
  font-size: 0.9rem;
  border-top: 1px solid var(--gray-light);
  text-align: center;
  height: var(--footer-height);
}

/* Notification Toast */
.notification-toast {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background-color: white;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 400px;
  z-index: 1000;
  transform: translateY(100px);
  opacity: 0;
  transition: all var(--transition-normal);
}

.notification-toast.show {
  transform: translateY(0);
  opacity: 1;
}

.toast-content {
  display: flex;
  align-items: center;
}

/* Chart Container Fix */
.chart-container {
  position: relative;
  height: 300px; /* Fixed height */
  width: 100%;
  display: flex;
  flex-direction: column;
  overflow: hidden; /* Prevent content from overflowing */
}

.panel-body {
  padding: 1.25rem;
  flex: 1;
  overflow: hidden; /* Prevent content from overflowing */
  display: flex;
  flex-direction: column;
}

/* Make sure the chart stays contained */
#dataChart {
  max-height: 300px;
  width: 100% !important;
  height: 100% !important;
}

.chart-legend {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1rem;
  padding-bottom: 0.5rem;
  max-height: 100px;
  overflow-y: auto; /* Allow scrolling if too many legend items */
}

/* Make sure the dashboard sections don't cause infinite scroll */
.dashboard-container {
  overflow: hidden;
}

.col-lg-5, .col-lg-7 {
  max-height: 600px; /* Set a reasonable max height */
}

.dashboard-panel {
  max-height: 600px; /* Match the column height */
  display: flex;
  flex-direction: column;
}

.toast-content i {
  margin-right: 10px;
  font-size: 1.2rem;
}

.toast-content i.fa-info-circle {
  color: var(--primary);
}

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

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

.toast-content i.fa-times-circle {
  color: var(--danger);
}

.close-toast {
  background: none;
  border: none;
  color: var(--gray);
  font-size: 1.2rem;
  cursor: pointer;
  padding: 0 0 0 10px;
  margin-left: 10px;
}

/* Skeletons for loading state */
.skeleton {
  position: relative;
  overflow: hidden;
  background-color: #e3e3e3;
  border-radius: var(--border-radius-sm);
}

.skeleton::after {
  content: "";
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 100%;
  background-image: linear-gradient(90deg, 
    rgba(255, 255, 255, 0) 0%, 
    rgba(255, 255, 255, 0.6) 50%, 
    rgba(255, 255, 255, 0) 100%);
  animation: shimmer 1.5s infinite;
}

.skeleton-row th.skeleton,
.skeleton-row td.skeleton {
  height: 24px;
  margin: 10px 0;
}

@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

/* Responsive Adjustments */
@media (max-width: 992px) {
  .summary-cards {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  }
}

@media (max-width: 768px) {
  .dashboard-header {
    height: auto;
    padding: 1rem 0;
  }
  
  .dashboard-title {
    font-size: 1.5rem;
  }
  
  .summary-cards {
    grid-template-columns: 1fr 1fr;
  }
  
  .search-container {
    max-width: 100%;
    margin-top: 0.5rem;
  }
}

@media (max-width: 576px) {
  .summary-cards {
    grid-template-columns: 1fr;
  }
  
  .panel-header, .panel-body {
    padding: 0.75rem;
  }
  
  .panel-header h2 {
    font-size: 1rem;
  }
  
  .chart-container {
    min-height: 250px;
  }
}