/* Enhanced Professional Styles for SupportChat Pro */

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

:root {
  --primary-color: #667eea;
  --primary-dark: #5a6fd8;
  --secondary-color: #764ba2;
  --success-color: #28a745;
  --danger-color: #dc3545;
  --warning-color: #ffc107;
  --info-color: #17a2b8;
  --light-color: #f8f9fa;
  --dark-color: #343a40;
  --white: #ffffff;
  --gray-100: #f8f9fa;
  --gray-200: #e9ecef;
  --gray-300: #dee2e6;
  --gray-400: #ced4da;
  --gray-500: #adb5bd;
  --gray-600: #6c757d;
  --gray-700: #495057;
  --gray-800: #343a40;
  --gray-900: #212529;
  --border-radius: 8px;
  --border-radius-lg: 12px;
  --border-radius-xl: 16px;
  --box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --box-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --box-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base Styles */
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  color: var(--gray-800);
  background-color: var(--gray-100);
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

@media (min-width: 640px) {
  .container {
    padding: 0 1.5rem;
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 2rem;
  }
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 600;
  line-height: 1.25;
  margin-bottom: 0.5rem;
  color: var(--gray-900);
}

h1 {
  font-size: 2.25rem;
}
h2 {
  font-size: 1.875rem;
}
h3 {
  font-size: 1.5rem;
}
h4 {
  font-size: 1.25rem;
}
h5 {
  font-size: 1.125rem;
}
h6 {
  font-size: 1rem;
}

p {
  margin-bottom: 1rem;
  color: var(--gray-700);
}

/* Header & Navigation */
.header {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  color: white;
  padding: 0;
  box-shadow: var(--box-shadow-lg);
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(10px);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
  position: relative;
}

.logo {
  font-size: 1.75rem;
  font-weight: 700;
  text-decoration: none;
  color: white;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  z-index: 1001;
}

.logo:hover {
  transform: scale(1.05);
  text-shadow: 0 0 20px rgba(255, 255, 255, 0.3);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 0.25rem;
  align-items: center;
  margin: 0;
}

.nav-links a,
.nav-links span {
  color: white;
  text-decoration: none;
  padding: 0.75rem 1rem;
  border-radius: 50px;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.nav-links a::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}

.nav-links a:hover::before {
  left: 100%;
}

.nav-links a:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.nav-links a.nav-active {
  background: rgba(255, 255, 255, 0.25);
  font-weight: 600;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.nav-links a.nav-upgrade {
  background: linear-gradient(135deg, #ff6b6b, #ee5a52);
  font-weight: 600;
  box-shadow: 0 4px 15px rgba(255, 107, 107, 0.4);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

.nav-links a.nav-upgrade:hover {
  background: linear-gradient(135deg, #ff5252, #e53935);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 107, 107, 0.5);
}

.nav-links span.nav-premium {
  background: linear-gradient(135deg, #ffc107, #ff9800);
  color: var(--gray-900);
  font-weight: 600;
  box-shadow: 0 4px 15px rgba(255, 193, 7, 0.4);
}

.nav-links a.nav-logout {
  background: rgba(220, 53, 69, 0.2);
  border: 1px solid rgba(220, 53, 69, 0.3);
}

.nav-links a.nav-logout:hover {
  background: rgba(220, 53, 69, 0.3);
  border-color: rgba(220, 53, 69, 0.5);
}

/* Mobile Menu */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 1001;
  border-radius: 6px;
  transition: var(--transition);
}

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

.mobile-menu-toggle span {
  width: 24px;
  height: 2px;
  background: white;
  margin: 3px 0;
  transition: var(--transition);
  border-radius: 2px;
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

/* Mobile Navigation */
@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    flex-direction: column;
    justify-content: flex-start;
    align-items: stretch;
    padding: 5rem 0 2rem 0;
    transition: right 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: -10px 0 25px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    gap: 0;
    backdrop-filter: blur(10px);
  }

  .nav-links.nav-open {
    right: 0;
  }

  .nav-links::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.5);
    z-index: -1;
    opacity: 0;
    transition: opacity 0.3s ease;
  }

  .nav-links.nav-open::before {
    opacity: 1;
  }

  .nav-links li {
    width: 100%;
  }

  .nav-links a,
  .nav-links span {
    width: 100%;
    padding: 1rem 2rem;
    border-radius: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    justify-content: flex-start;
    font-size: 1rem;
  }

  .nav-links a:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: none;
    padding-left: 2.5rem;
  }

  .nav-links a.nav-active {
    background: rgba(255, 255, 255, 0.2);
    border-left: 4px solid white;
  }

  .nav-links a.nav-upgrade {
    background: rgba(255, 107, 107, 0.2);
    border-left: 4px solid #ff6b6b;
    animation: none;
  }

  .nav-links span.nav-premium {
    background: rgba(255, 193, 7, 0.2);
    border-left: 4px solid #ffc107;
    color: white;
  }

  .nav-links a.nav-logout {
    background: rgba(220, 53, 69, 0.2);
    border-left: 4px solid #dc3545;
    margin-top: auto;
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: var(--primary-color);
  color: white;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  text-align: center;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}

.btn:hover::before {
  left: 100%;
}

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

.btn:active {
  transform: translateY(0);
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.8rem;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1rem;
}

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

.btn-success:hover {
  background: #218838;
}

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

.btn-danger:hover {
  background: #c82333;
}

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

.btn-warning:hover {
  background: #e0a800;
}

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

.btn-info:hover {
  background: #138496;
}

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

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

.btn:disabled {
  background: var(--gray-400);
  cursor: not-allowed;
  transform: none;
  opacity: 0.6;
}

/* Form Styles */
.form-container {
  max-width: 500px;
  margin: 2rem auto;
  background: white;
  padding: 2rem;
  border-radius: var(--border-radius-xl);
  box-shadow: var(--box-shadow-lg);
  border: 1px solid var(--gray-200);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--gray-900);
  font-size: 0.875rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 2px solid var(--gray-300);
  border-radius: var(--border-radius);
  font-size: 0.875rem;
  transition: var(--transition);
  background: white;
  color: var(--gray-900);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group input:invalid {
  border-color: var(--danger-color);
}

.form-group small {
  display: block;
  margin-top: 0.25rem;
  color: var(--gray-600);
  font-size: 0.75rem;
}

/* Dashboard Styles */
.dashboard {
  padding: 2rem 0;
  min-height: calc(100vh - 80px);
}

.dashboard-header {
  background: white;
  padding: 2rem;
  border-radius: var(--border-radius-xl);
  margin-bottom: 2rem;
  box-shadow: var(--box-shadow);
  text-align: center;
  border: 1px solid var(--gray-200);
}

.dashboard-header h1 {
  color: var(--primary-color);
  margin-bottom: 0.5rem;
  font-size: 2rem;
}

.dashboard-header p {
  color: var(--gray-600);
  font-size: 1.1rem;
  margin: 0;
}

.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.dashboard-card {
  background: white;
  padding: 2rem;
  border-radius: var(--border-radius-xl);
  box-shadow: var(--box-shadow);
  transition: var(--transition);
  border: 1px solid var(--gray-200);
  position: relative;
  overflow: hidden;
}

.dashboard-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

.dashboard-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--box-shadow-xl);
  border-color: var(--primary-color);
}

.dashboard-card h3 {
  color: var(--gray-900);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.dashboard-card h3 i {
  color: var(--primary-color);
}

/* Alert Styles */
.alert {
  padding: 1rem 1.5rem;
  border-radius: var(--border-radius);
  margin-bottom: 1.5rem;
  border-left: 4px solid;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.alert i {
  margin-top: 0.125rem;
  font-size: 1.1rem;
}

.alert-success {
  background: #d4edda;
  color: #155724;
  border-left-color: var(--success-color);
}

.alert-error {
  background: #f8d7da;
  color: #721c24;
  border-left-color: var(--danger-color);
}

.alert-warning {
  background: #fff3cd;
  color: #856404;
  border-left-color: var(--warning-color);
}

.alert-info {
  background: #d1ecf1;
  color: #0c5460;
  border-left-color: var(--info-color);
}

/* Card Styles */
.card {
  background: white;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--box-shadow);
  border: 1px solid var(--gray-200);
  overflow: hidden;
  transition: var(--transition);
}

.card:hover {
  box-shadow: var(--box-shadow-lg);
}

.card-header {
  padding: 1.5rem;
  background: var(--gray-50);
  border-bottom: 1px solid var(--gray-200);
  font-weight: 600;
  color: var(--gray-900);
}

.card-body {
  padding: 1.5rem;
}

.card-footer {
  padding: 1rem 1.5rem;
  background: var(--gray-50);
  border-top: 1px solid var(--gray-200);
}

/* Table Styles */
.table {
  width: 100%;
  border-collapse: collapse;
  background: white;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--box-shadow);
  border: 1px solid var(--gray-200);
}

.table th,
.table td {
  padding: 1rem;
  text-align: left;
  border-bottom: 1px solid var(--gray-200);
  vertical-align: middle;
}

.table th {
  background: var(--gray-50);
  font-weight: 600;
  color: var(--gray-900);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

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

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

/* Badge Styles */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.25rem 0.75rem;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-success {
  background: #d4edda;
  color: #155724;
}

.badge-danger {
  background: #f8d7da;
  color: #721c24;
}

.badge-warning {
  background: #fff3cd;
  color: #856404;
}

.badge-info {
  background: #d1ecf1;
  color: #0c5460;
}

.badge-primary {
  background: rgba(102, 126, 234, 0.1);
  color: var(--primary-color);
}

/* Modal Styles */
.modal {
  display: none;
  position: fixed;
  z-index: 2000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  animation: fadeIn 0.3s ease;
}

.modal-content {
  background-color: white;
  margin: 2% auto;
  padding: 0;
  border-radius: var(--border-radius-xl);
  width: 90%;
  max-width: 600px;
  max-height: 90vh;
  overflow: hidden;
  box-shadow: var(--box-shadow-xl);
  animation: slideUp 0.3s ease;
}

.modal-header {
  padding: 1.5rem 2rem;
  border-bottom: 1px solid var(--gray-200);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--gray-50);
}

.modal-header h2 {
  margin: 0;
  color: var(--gray-900);
  font-size: 1.25rem;
}

.modal-body {
  padding: 2rem;
  max-height: 60vh;
  overflow-y: auto;
}

.modal-footer {
  padding: 1rem 2rem;
  border-top: 1px solid var(--gray-200);
  background: var(--gray-50);
  display: flex;
  justify-content: flex-end;
  gap: 1rem;
}

.close {
  color: var(--gray-400);
  font-size: 1.5rem;
  font-weight: bold;
  cursor: pointer;
  border: none;
  background: none;
  padding: 0.25rem;
  border-radius: 4px;
  transition: var(--transition);
}

.close:hover {
  color: var(--gray-600);
  background: var(--gray-200);
}

/* Stats & Charts */
.stat-card {
  background: white;
  padding: 2rem;
  border-radius: var(--border-radius-xl);
  box-shadow: var(--box-shadow);
  text-align: center;
  transition: var(--transition);
  border: 1px solid var(--gray-200);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

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

.stat-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  opacity: 0.8;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  line-height: 1;
}

.stat-label {
  color: var(--gray-600);
  font-size: 0.875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Responsive Design */
@media (max-width: 640px) {
  .container {
    padding: 0 1rem;
  }

  .dashboard {
    padding: 1rem 0;
  }

  .dashboard-header {
    padding: 1.5rem;
    margin-bottom: 1.5rem;
  }

  .dashboard-header h1 {
    font-size: 1.5rem;
  }

  .dashboard-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .dashboard-card {
    padding: 1.5rem;
  }

  .form-container {
    margin: 1rem auto;
    padding: 1.5rem;
  }

  .btn {
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
  }

  .modal-content {
    width: 95%;
    margin: 5% auto;
  }

  .modal-body {
    padding: 1.5rem;
  }

  .table {
    font-size: 0.875rem;
  }

  .table th,
  .table td {
    padding: 0.75rem 0.5rem;
  }
}

/* Loading States */
.loading {
  position: relative;
  pointer-events: none;
}

.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);
  }
}

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

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Utility Classes */
.text-center {
  text-align: center;
}
.text-left {
  text-align: left;
}
.text-right {
  text-align: right;
}

.text-sm {
  font-size: 0.875rem;
}
.text-lg {
  font-size: 1.125rem;
}
.text-xl {
  font-size: 1.25rem;
}

.font-medium {
  font-weight: 500;
}
.font-semibold {
  font-weight: 600;
}
.font-bold {
  font-weight: 700;
}

.text-gray-500 {
  color: var(--gray-500);
}
.text-gray-600 {
  color: var(--gray-600);
}
.text-gray-700 {
  color: var(--gray-700);
}
.text-gray-900 {
  color: var(--gray-900);
}

.bg-white {
  background-color: white;
}
.bg-gray-50 {
  background-color: var(--gray-100);
}
.bg-gray-100 {
  background-color: var(--gray-100);
}

.rounded {
  border-radius: var(--border-radius);
}
.rounded-lg {
  border-radius: var(--border-radius-lg);
}
.rounded-xl {
  border-radius: var(--border-radius-xl);
}
.rounded-full {
  border-radius: 9999px;
}

.shadow {
  box-shadow: var(--box-shadow);
}
.shadow-lg {
  box-shadow: var(--box-shadow-lg);
}
.shadow-xl {
  box-shadow: var(--box-shadow-xl);
}

.border {
  border: 1px solid var(--gray-200);
}
.border-gray-200 {
  border-color: var(--gray-200);
}
.border-gray-300 {
  border-color: var(--gray-300);
}

.mb-0 {
  margin-bottom: 0;
}
.mb-1 {
  margin-bottom: 0.25rem;
}
.mb-2 {
  margin-bottom: 0.5rem;
}
.mb-3 {
  margin-bottom: 0.75rem;
}
.mb-4 {
  margin-bottom: 1rem;
}
.mb-6 {
  margin-bottom: 1.5rem;
}
.mb-8 {
  margin-bottom: 2rem;
}

.mt-0 {
  margin-top: 0;
}
.mt-1 {
  margin-top: 0.25rem;
}
.mt-2 {
  margin-top: 0.5rem;
}
.mt-3 {
  margin-top: 0.75rem;
}
.mt-4 {
  margin-top: 1rem;
}
.mt-6 {
  margin-top: 1.5rem;
}
.mt-8 {
  margin-top: 2rem;
}

.p-0 {
  padding: 0;
}
.p-1 {
  padding: 0.25rem;
}
.p-2 {
  padding: 0.5rem;
}
.p-3 {
  padding: 0.75rem;
}
.p-4 {
  padding: 1rem;
}
.p-6 {
  padding: 1.5rem;
}
.p-8 {
  padding: 2rem;
}

.flex {
  display: flex;
}
.inline-flex {
  display: inline-flex;
}
.grid {
  display: grid;
}
.hidden {
  display: none;
}
.block {
  display: block;
}

.items-center {
  align-items: center;
}
.items-start {
  align-items: flex-start;
}
.items-end {
  align-items: flex-end;
}

.justify-center {
  justify-content: center;
}
.justify-between {
  justify-content: space-between;
}
.justify-end {
  justify-content: flex-end;
}

.gap-1 {
  gap: 0.25rem;
}
.gap-2 {
  gap: 0.5rem;
}
.gap-3 {
  gap: 0.75rem;
}
.gap-4 {
  gap: 1rem;
}
.gap-6 {
  gap: 1.5rem;
}
.gap-8 {
  gap: 2rem;
}

.w-full {
  width: 100%;
}
.h-full {
  height: 100%;
}

.transition {
  transition: var(--transition);
}
.transition-fast {
  transition: var(--transition-fast);
}

/* Print Styles */
@media print {
  .header,
  .nav,
  .mobile-menu-toggle,
  .btn,
  .modal {
    display: none !important;
  }

  body {
    background: white;
    color: black;
  }

  .dashboard-card,
  .card {
    box-shadow: none;
    border: 1px solid #ddd;
    break-inside: avoid;
  }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
  :root {
    --gray-100: #1f2937;
    --gray-200: #374151;
    --gray-300: #4b5563;
    --gray-400: #6b7280;
    --gray-500: #9ca3af;
    --gray-600: #d1d5db;
    --gray-700: #e5e7eb;
    --gray-800: #f3f4f6;
    --gray-900: #ffffff;
    --white: #1f2937;
  }

  body {
    background-color: #111827;
    color: #f3f4f6;
  }

  .dashboard-card,
  .card,
  .form-container,
  .modal-content {
    background: #1f2937;
    border-color: #374151;
  }

  .form-group input,
  .form-group select,
  .form-group textarea {
    background: #374151;
    border-color: #4b5563;
    color: #f3f4f6;
  }

  .table {
    background: #1f2937;
  }

  .table th {
    background: #374151;
  }
}

/* Accessibility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Focus styles */
*:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

.btn:focus,
.nav-links a:focus {
  outline: 2px solid rgba(255, 255, 255, 0.5);
}

/* High contrast mode */
@media (prefers-contrast: high) {
  :root {
    --box-shadow: 0 0 0 1px #000;
    --box-shadow-lg: 0 0 0 2px #000;
    --box-shadow-xl: 0 0 0 3px #000;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}