/* ============================================
   DD-DJ Admin Panel - Modern UI Upgrade
   Based on Official Website Design System v2.0
   Enhanced with Enterprise-Grade Styling
   ============================================ */

/* ===== CSS Custom Properties (Design Tokens) ===== */
:root {
  /* Primary Brand Colors */
  --ddj-primary: #6366F1;
  --ddj-primary-light: #818CF8;
  --ddj-primary-dark: #4F46E5;
  --ddj-primary-bg: #EEF2FF;
  
  /* Gradient System */
  --ddj-gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --ddj-gradient-hero: linear-gradient(135deg, #6366F1 0%, #a855f7 50%, #ec4899 100%);
  --ddj-gradient-card: linear-gradient(135deg, rgba(99,102,241,0.05) 0%, rgba(168,85,247,0.05) 100%);
  
  /* Semantic Colors */
  --ddj-success: #10B981;
  --ddj-success-light: #D1FAE5;
  --ddj-warning: #F59E0B;
  --ddj-warning-light: #FEF3C7;
  --ddj-error: #EF4444;
  --ddj-error-light: #FEE2E2;
  --ddj-info: #3B82F6;
  --ddj-info-light: #DBEAFE;
  
  /* Neutral Colors */
  --ddj-gray-50: #F9FAFB;
  --ddj-gray-100: #F3F4F6;
  --ddj-gray-200: #E5E7EB;
  --ddj-gray-300: #D1D5DB;
  --ddj-gray-400: #9CA3AF;
  --ddj-gray-500: #6B7280;
  --ddj-gray-600: #4B5563;
  --ddj-gray-700: #374151;
  --ddj-gray-800: #1F2937;
  --ddj-gray-900: #111827;
  
  /* Typography */
  --ddj-font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  --ddj-font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;
  
  /* Spacing (8px grid) */
  --ddj-space-1: 0.25rem;   /* 4px */
  --ddj-space-2: 0.5rem;    /* 8px */
  --ddj-space-3: 0.75rem;   /* 12px */
  --ddj-space-4: 1rem;      /* 16px */
  --ddj-space-5: 1.25rem;   /* 20px */
  --ddj-space-6: 1.5rem;    /* 24px */
  --ddj-space-8: 2rem;      /* 32px */
  --ddj-space-10: 2.5rem;   /* 40px */
  --ddj-space-12: 3rem;     /* 48px */
  
  /* Border Radius */
  --ddj-radius-sm: 0.375rem;  /* 6px */
  --ddj-radius-md: 0.5rem;    /* 8px */
  --ddj-radius-lg: 0.75rem;   /* 12px */
  --ddj-radius-xl: 1rem;      /* 16px */
  --ddj-radius-2xl: 1.25rem;  /* 20px */
  --ddj-radius-full: 9999px;
  
  /* Shadows (Elevation) */
  --ddj-shadow-sm: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
  --ddj-shadow-md: 0 4px 12px rgba(0,0,0,0.08), 0 2px 4px rgba(0,0,0,0.04);
  --ddj-shadow-lg: 0 10px 24px rgba(0,0,0,0.1), 0 4px 8px rgba(0,0,0,0.06);
  --ddj-shadow-xl: 0 20px 40px rgba(0,0,0,0.12), 0 8px 16px rgba(0,0,0,0.08);
  --ddj-shadow-glow: 0 0 20px rgba(99,102,241,0.15);
  
  /* Transitions */
  --ddj-transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --ddj-transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --ddj-transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== Global Styles Reset & Base ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--ddj-font-sans);
  color: var(--ddj-gray-800);
  background-color: var(--ddj-gray-50);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* ===== Layout System ===== */
.admin-container {
  display: flex;
  min-height: 100vh;
  background: var(--ddj-gray-50);
}

/* Sidebar Navigation */
.sidebar {
  width: 280px;
  background: linear-gradient(180deg, #ffffff 0%, var(--ddj-gray-50) 100%);
  border-right: 1px solid var(--ddj-gray-200);
  padding: var(--ddj-space-6);
  position: fixed;
  height: 100vh;
  overflow-y: auto;
  z-index: 100;
  transition: all var(--ddj-transition-slow);
  box-shadow: var(--ddj-shadow-sm);
}

.sidebar-header {
  text-align: center;
  padding-bottom: var(--ddj-space-6);
  border-bottom: 1px solid var(--ddj-gray-200);
  margin-bottom: var(--ddj-space-6);
}

.sidebar-logo {
  width: 60px;
  height: 60px;
  background: var(--ddj-gradient-primary);
  border-radius: var(--ddj-radius-xl);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--ddj-space-3);
  box-shadow: var(--ddj-shadow-glow);
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-5px); }
}

.sidebar-title {
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--ddj-gradient-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
}

.sidebar-subtitle {
  font-size: 0.75rem;
  color: var(--ddj-gray-500);
  margin-top: var(--ddj-space-1);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Navigation Menu */
.nav-menu {
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav-item {
  margin-bottom: var(--ddj-space-2);
}

.nav-link {
  display: flex;
  align-items: center;
  padding: var(--ddj-space-3) var(--ddj-space-4);
  color: var(--ddj-gray-600);
  text-decoration: none;
  border-radius: var(--ddj-radius-lg);
  font-weight: 500;
  font-size: 0.95rem;
  transition: all var(--ddj-transition-base);
  position: relative;
  overflow: hidden;
}

.nav-link::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  height: 100%;
  background: var(--ddj-gradient-primary);
  transform: scaleY(0);
  transition: transform var(--ddj-transition-base);
  border-radius: 0 var(--ddj-radius-lg) var(--ddj-radius-lg) 0;
}

.nav-link:hover {
  background: var(--ddj-primary-bg);
  color: var(--ddj-primary);
  transform: translateX(4px);
}

.nav-link:hover::before {
  transform: scaleY(1);
}

.nav-link.active {
  background: var(--ddj-gradient-primary);
  color: white;
  box-shadow: var(--ddj-shadow-md);
  font-weight: 600;
}

.nav-link.active::before {
  transform: scaleY(0);
}

.nav-icon {
  width: 20px;
  height: 20px;
  margin-right: var(--ddj-space-3);
  opacity: 0.7;
  transition: opacity var(--ddj-transition-fast);
}

.nav-link:hover .nav-icon,
.nav-link.active .nav-icon {
  opacity: 1;
}

/* Main Content Area */
.main-content {
  flex: 1;
  margin-left: 280px;
  padding: var(--ddj-space-8);
  min-height: 100vh;
  background: var(--ddj-gray-50);
}

/* Header / Top Bar */
.header {
  background: white;
  padding: var(--ddj-space-4) var(--ddj-space-6);
  border-radius: var(--ddj-radius-xl);
  box-shadow: var(--ddj-shadow-sm);
  margin-bottom: var(--ddj-space-6);
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: var(--ddj-space-6);
  z-index: 50;
  backdrop-filter: blur(10px);
  border: 1px solid var(--ddj-gray-200);
}

.header-left h1 {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--ddj-gray-900);
  letter-spacing: -0.02em;
}

.header-breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--ddj-space-2);
  font-size: 0.875rem;
  color: var(--ddj-gray-500);
  margin-top: var(--ddj-space-1);
}

.header-breadcrumb a {
  color: var(--ddj-primary);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--ddj-transition-fast);
}

.header-breadcrumb a:hover {
  color: var(--ddj-primary-dark);
}

.header-right {
  display: flex;
  align-items: center;
  gap: var(--ddj-space-4);
}

/* User Avatar & Profile */
.user-profile {
  display: flex;
  align-items: center;
  gap: var(--ddj-space-3);
  cursor: pointer;
  padding: var(--ddj-space-2) var(--ddj-space-3);
  border-radius: var(--ddj-radius-full);
  transition: all var(--ddj-transition-base);
}

.user-profile:hover {
  background: var(--ddj-gray-100);
}

.user-avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--ddj-radius-full);
  background: var(--ddj-gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 600;
  font-size: 1rem;
  box-shadow: var(--ddj-shadow-sm);
  position: relative;
}

.user-avatar.online::after {
  content: '';
  position: absolute;
  bottom: 2px;
  right: 2px;
  width: 10px;
  height: 10px;
  background: var(--ddj-success);
  border: 2px solid white;
  border-radius: var(--ddj-radius-full);
}

.user-info {
  text-align: left;
}

.user-name {
  font-weight: 600;
  color: var(--ddj-gray-900);
  font-size: 0.9rem;
}

.user-role {
  font-size: 0.75rem;
  color: var(--ddj-gray-500);
  font-weight: 500;
}

/* Cards & Panels */
.card {
  background: white;
  border-radius: var(--ddj-radius-xl);
  padding: var(--ddj-space-6);
  border: 1px solid var(--ddj-gray-200);
  box-shadow: var(--ddj-shadow-sm);
  transition: all var(--ddj-transition-slow);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--ddj-gradient-primary);
  transform: scaleX(0);
  transition: transform var(--ddj-transition-slow);
  transform-origin: left;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--ddj-shadow-lg);
  border-color: transparent;
}

.card:hover::before {
  transform: scaleX(1);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--ddj-space-4);
  padding-bottom: var(--ddj-space-4);
  border-bottom: 1px solid var(--ddj-gray-100);
}

.card-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--ddj-gray-900);
  letter-spacing: -0.01em;
}

.card-subtitle {
  font-size: 0.875rem;
  color: var(--ddj-gray-500);
  margin-top: var(--ddj-space-1);
}

/* Stats Cards (Dashboard) */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--ddj-space-6);
  margin-bottom: var(--ddj-space-6);
}

.stat-card {
  background: white;
  border-radius: var(--ddj-radius-xl);
  padding: var(--ddj-space-6);
  border: 1px solid var(--ddj-gray-200);
  box-shadow: var(--ddj-shadow-sm);
  transition: all var(--ddj-transition-slow);
  position: relative;
  overflow: hidden;
}

.stat-card::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, var(--ddj-primary-bg) 0%, transparent 70%);
  opacity: 0;
  transition: opacity var(--ddj-transition-slow);
}

.stat-card:hover {
  transform: translateY(-6px) scale(1.02);
  box-shadow: var(--ddj-shadow-xl);
  border-color: var(--ddj-primary-light);
}

.stat-card:hover::after {
  opacity: 1;
}

.stat-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--ddj-radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: var(--ddj-space-4);
  position: relative;
  z-index: 1;
}

.stat-icon.primary {
  background: linear-gradient(135deg, #EEF2FF 0%, #E0E7FF 100%);
  color: var(--ddj-primary);
}

.stat-icon.success {
  background: linear-gradient(135deg, #D1FAE5 0%, #A7F3D0 100%);
  color: var(--ddj-success);
}

.stat-icon.warning {
  background: linear-gradient(135deg, #FEF3C7 0%, #FDE68A 100%);
  color: var(--ddj-warning);
}

.stat-icon.error {
  background: linear-gradient(135deg, #FEE2E2 0%, #FECACA 100%);
  color: var(--ddj-error);
}

.stat-value {
  font-size: 2rem;
  font-weight: 800;
  color: var(--ddj-gray-900);
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: var(--ddj-space-2);
  position: relative;
  z-index: 1;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--ddj-gray-600);
  font-weight: 500;
  position: relative;
  z-index: 1;
}

.stat-change {
  display: inline-flex;
  align-items: center;
  gap: var(--ddj-space-1);
  font-size: 0.75rem;
  font-weight: 600;
  margin-top: var(--ddj-space-2);
  padding: var(--ddj-space-1) var(--ddj-space-2);
  border-radius: var(--ddj-radius-full);
  position: relative;
  z-index: 1;
}

.stat-change.positive {
  color: var(--ddj-success);
  background: var(--ddj-success-light);
}

.stat-change.negative {
  color: var(--ddj-error);
  background: var(--ddj-error-light);
}

/* Data Tables */
.data-table-container {
  background: white;
  border-radius: var(--ddj-radius-xl);
  overflow: hidden;
  box-shadow: var(--ddj-shadow-sm);
  border: 1px solid var(--ddj-gray-200);
}

.table-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--ddj-space-4) var(--ddj-space-6);
  background: var(--ddj-gray-50);
  border-bottom: 1px solid var(--ddj-gray-200);
}

.search-input {
  flex: 1;
  max-width: 320px;
  padding: var(--ddj-space-2) var(--ddj-space-4);
  border: 1px solid var(--ddj-gray-300);
  border-radius: var(--ddj-radius-lg);
  font-size: 0.875rem;
  transition: all var(--ddj-transition-base);
  background: white;
}

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

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

thead {
  background: var(--ddj-gray-50);
}

th {
  padding: var(--ddj-space-3) var(--ddj-space-4);
  text-align: left;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--ddj-gray-600);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 2px solid var(--ddj-gray-200);
}

td {
  padding: var(--ddj-space-4);
  font-size: 0.875rem;
  color: var(--ddj-gray-700);
  border-bottom: 1px solid var(--ddj-gray-100);
  vertical-align: middle;
}

tr:hover td {
  background: var(--ddj-primary-bg);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--ddj-space-2);
  padding: var(--ddj-space-2) var(--ddj-space-4);
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--ddj-radius-lg);
  border: none;
  cursor: pointer;
  transition: all var(--ddj-transition-base);
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255,255,255,0.2);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn:active::before {
  width: 300px;
  height: 300px;
}

.btn-primary {
  background: var(--ddj-gradient-primary);
  color: white;
  box-shadow: var(--ddj-shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--ddj-shadow-lg);
}

.btn-secondary {
  background: white;
  color: var(--ddj-gray-700);
  border: 1px solid var(--ddj-gray-300);
}

.btn-secondary:hover {
  background: var(--ddj-gray-50);
  border-color: var(--ddj-gray-400);
}

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

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

.btn-sm {
  padding: var(--ddj-space-1) var(--ddj-space-3);
  font-size: 0.813rem;
}

.btn-lg {
  padding: var(--ddj-space-3) var(--ddj-space-6);
  font-size: 1rem;
}

/* Forms */
.form-group {
  margin-bottom: var(--ddj-space-5);
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--ddj-gray-700);
  margin-bottom: var(--ddj-space-2);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--ddj-space-3) var(--ddj-space-4);
  border: 1px solid var(--ddj-gray-300);
  border-radius: var(--ddj-radius-lg);
  font-size: 0.9rem;
  font-family: inherit;
  transition: all var(--ddj-transition-base);
  background: var(--ddj-gray-50);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--ddj-primary);
  box-shadow: 0 0 0 3px rgba(99,102,241,0.1);
  background: white;
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

/* Badges & Tags */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--ddj-space-1) var(--ddj-space-3);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--ddj-radius-full);
  text-transform: capitalize;
}

.badge-primary {
  background: var(--ddj-primary-bg);
  color: var(--ddj-primary);
}

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

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

.badge-error {
  background: var(--ddj-error-light);
  color: var(--ddj-error);
}

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

/* Alerts & Notifications */
.alert {
  padding: var(--ddj-space-4) var(--ddj-space-5);
  border-radius: var(--ddj-radius-lg);
  border-left: 4px solid;
  margin-bottom: var(--ddj-space-4);
  display: flex;
  align-items: flex-start;
  gap: var(--ddj-space-3);
  animation: slideInRight 0.3s ease-out;
}

@keyframes slideInRight {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.alert-success {
  background: var(--ddj-success-light);
  border-color: var(--ddj-success);
  color: #065F46;
}

.alert-warning {
  background: var(--ddj-warning-light);
  border-color: var(--ddj-warning);
  color: #92400E;
}

.alert-error {
  background: var(--ddj-error-light);
  border-color: var(--ddj-error);
  color: #991B1B;
}

.alert-info {
  background: var(--ddj-info-light);
  border-color: var(--ddj-info);
  color: #1E40AF;
}

/* Modal / Dialog */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  animation: fadeIn 0.2s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal {
  background: white;
  border-radius: var(--ddj-radius-2xl);
  max-width: 600px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--ddj-shadow-xl);
  animation: scaleIn 0.3s ease-out;
}

@keyframes scaleIn {
  from {
    transform: scale(0.9);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

.modal-header {
  padding: var(--ddj-space-6);
  border-bottom: 1px solid var(--ddj-gray-200);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--ddj-gray-900);
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--ddj-gray-400);
  cursor: pointer;
  transition: color var(--ddj-transition-fast);
  padding: var(--ddj-space-2);
  border-radius: var(--ddj-radius-full);
}

.modal-close:hover {
  color: var(--ddj-gray-600);
  background: var(--ddj-gray-100);
}

.modal-body {
  padding: var(--ddj-space-6);
}

.modal-footer {
  padding: var(--ddj-space-4) var(--ddj-space-6);
  border-top: 1px solid var(--ddj-gray-200);
  display: flex;
  justify-content: flex-end;
  gap: var(--ddj-space-3);
}

/* Pagination */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--ddj-space-2);
  padding: var(--ddj-space-4) 0;
}

.page-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--ddj-gray-300);
  border-radius: var(--ddj-radius-md);
  background: white;
  color: var(--ddj-gray-700);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--ddj-transition-base);
}

.page-btn:hover {
  background: var(--ddj-primary-bg);
  border-color: var(--ddj-primary);
  color: var(--ddj-primary);
}

.page-btn.active {
  background: var(--ddj-gradient-primary);
  border-color: transparent;
  color: white;
  box-shadow: var(--ddj-shadow-md);
}

/* Loading States */
.skeleton {
  background: linear-gradient(90deg, var(--ddj-gray-200) 25%, var(--ddj-gray-100) 50%, var(--ddj-gray-200) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--ddj-radius-md);
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--ddj-gray-200);
  border-top-color: var(--ddj-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* Empty State */
.empty-state {
  text-align: center;
  padding: var(--ddj-space-12);
  color: var(--ddj-gray-500);
}

.empty-state-icon {
  font-size: 4rem;
  margin-bottom: var(--ddj-space-4);
  opacity: 0.3;
}

.empty-state-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--ddj-gray-700);
  margin-bottom: var(--ddj-space-2);
}

.empty-state-description {
  font-size: 0.9rem;
  max-width: 400px;
  margin: 0 auto var(--ddj-space-6);
  line-height: 1.6;
}

/* Responsive Design */
@media (max-width: 1200px) {
  .sidebar {
    width: 250px;
  }
  .main-content {
    margin-left: 250px;
  }
}

@media (max-width: 992px) {
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .main-content {
    margin-left: 0;
  }
}

@media (max-width: 768px) {
  .main-content {
    padding: var(--ddj-space-4);
  }
  .stats-grid {
    grid-template-columns: 1fr;
  }
  .header {
    flex-direction: column;
    gap: var(--ddj-space-4);
    text-align: center;
  }
  .data-table-container {
    overflow-x: auto;
  }
  table {
    min-width: 600px;
  }
}

/* Print Styles */
@media print {
  .sidebar,
  .header,
  .btn {
    display: none !important;
  }
  .main-content {
    margin-left: 0;
    padding: 0;
  }
}