:root {
  /* Dark Mode Color Palette */
  --primary-color: #4a9eff;
  --primary-hover: #3d8ae6;
  --secondary-color: #8b94a5;
  --success-color: #10b981;
  --danger-color: #ef4444;
  --warning-color: #f59e0b;
  
  /* Background Colors */
  --bg-primary: #0f1419;
  --bg-secondary: #1a1f2e;
  --bg-tertiary: #242b3d;
  --bg-hover: #2d3548;
  
  /* Text Colors */
  --text-primary: #e8eaed;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  
  /* Border Colors */
  --border-color: #2d3548;
  --border-light: #3d4556;
  
  /* Shadows */
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 20px rgba(74, 158, 255, 0.15);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg-primary);
  min-height: 100vh;
  color: var(--text-primary);
}

/* Navbar */
.navbar {
  background: var(--bg-secondary);
  box-shadow: var(--shadow);
  padding: 1rem 0;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--border-color);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-title {
  font-size: 1.5rem;
  color: var(--primary-color);
  margin: 0;
}

.nav-actions {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--bg-tertiary);
  padding: 0.5rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.user-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--primary-color);
}

.user-name {
  display: flex;
  flex-direction: column;
  font-size: 0.9rem;
  color: var(--text-primary);
  font-weight: 500;
}

.user-name small {
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 400;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem 2rem;
}

/* Login Page */
.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.login-container {
  width: 100%;
  max-width: 450px;
}

.login-card {
  background: var(--bg-secondary);
  padding: 2.5rem;
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
}

.login-card h1 {
  text-align: center;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
  font-size: 2rem;
}

.login-card h2 {
  text-align: center;
  color: var(--text-primary);
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
  font-weight: 500;
}

.login-instruction {
  text-align: center;
  color: var(--secondary-color);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.telegram-login-wrapper {
  display: flex;
  justify-content: center;
  margin: 2rem 0;
  min-height: 50px;
}

.login-info {
  background: var(--bg-tertiary);
  padding: 1rem;
  border-radius: 8px;
  margin-top: 1.5rem;
  border: 1px solid var(--border-color);
}

.login-info p {
  margin: 0.5rem 0;
  color: var(--text-primary);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

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

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--text-primary);
}

.form-group small {
  display: block;
  margin-top: 0.5rem;
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.form-control {
  width: 100%;
  padding: 0.75rem;
  border: 2px solid var(--border-color);
  border-radius: 6px;
  font-size: 1rem;
  transition: all 0.2s;
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-color);
  background: var(--bg-hover);
  box-shadow: 0 0 0 3px rgba(74, 158, 255, 0.1);
}

select.form-control {
  cursor: pointer;
}

/* Message input fields */
.form-group small {
  display: block;
  margin-top: 5px;
  font-size: 0.85rem;
  color: var(--text-muted);
  font-style: italic;
}

.form-group input[id$='-message'] {
  font-family: 'Courier New', Consolas, monospace;
  font-size: 0.9rem;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.625rem 1.25rem;
  font-size: 1rem;
  font-weight: 500;
  text-align: center;
  text-decoration: none;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
  line-height: 1.5;
}

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

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(74, 158, 255, 0.4);
}

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

.btn-secondary:hover {
  background: #6f7785;
  transform: translateY(-1px);
}

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

.btn-success:hover {
  background: #059669;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.4);
}

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

.btn-danger:hover {
  background: #dc2626;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.4);
}

.btn-block {
  display: block;
  width: 100%;
}

.btn-lg {
  padding: 0.875rem 1.5rem;
  font-size: 1.125rem;
}

.btn-sm {
  padding: 0.375rem 0.75rem;
  font-size: 0.875rem;
}

/* Alerts */
.alert {
  padding: 1rem;
  border-radius: 6px;
  margin-bottom: 1.5rem;
  border: 1px solid;
}

.alert-error {
  background: rgba(239, 68, 68, 0.15);
  color: #fca5a5;
  border-color: rgba(239, 68, 68, 0.3);
}

.alert-success {
  background: rgba(16, 185, 129, 0.15);
  color: #6ee7b7;
  border-color: rgba(16, 185, 129, 0.3);
}

.alert-warning {
  background: rgba(245, 158, 11, 0.15);
  color: #fcd34d;
  border-color: rgba(245, 158, 11, 0.3);
}

.alert-info {
  background: rgba(74, 158, 255, 0.15);
  color: #93c5fd;
  border-color: rgba(74, 158, 255, 0.3);
}

/* Help Text */
.help-text {
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.help-text p {
  margin-bottom: 0.5rem;
}

.help-text ol, .help-text ul {
  margin-left: 1.5rem;
  margin-top: 0.5rem;
}

.help-text li {
  margin-bottom: 0.25rem;
}

.help-text code {
  background: var(--bg-tertiary);
  color: var(--primary-color);
  padding: 0.125rem 0.25rem;
  border-radius: 3px;
  font-family: 'Courier New', monospace;
  border: 1px solid var(--border-color);
}

/* Page Header */
.page-header {
  background: var(--bg-secondary);
  padding: 2rem;
  border-radius: 12px;
  box-shadow: var(--shadow);
  margin-bottom: 2rem;
  border: 1px solid var(--border-color);
}

.page-header h2 {
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.page-header p {
  color: var(--text-secondary);
  margin: 0;
}

.page-header code {
  background: var(--bg-tertiary);
  color: var(--primary-color);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-family: 'Courier New', monospace;
  border: 1px solid var(--border-color);
}

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: var(--bg-secondary);
  padding: 1.5rem;
  border-radius: 12px;
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  gap: 1rem;
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

.stat-card:hover {
  border-color: var(--primary-color);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.stat-icon {
  font-size: 2.5rem;
}

.stat-content h3 {
  font-size: 2rem;
  color: var(--primary-color);
  margin: 0;
}

.stat-content p {
  color: var(--text-secondary);
  margin: 0;
  font-size: 0.9rem;
}

/* Section */
.section {
  background: var(--bg-secondary);
  padding: 2rem;
  border-radius: 12px;
  box-shadow: var(--shadow);
  margin-bottom: 2rem;
  border: 1px solid var(--border-color);
}

.section h3 {
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

/* Groups List */
.groups-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.group-card {
  border: 2px solid var(--border-color);
  border-radius: 8px;
  padding: 1.5rem;
  transition: all 0.3s ease;
  background: var(--bg-tertiary);
}

.group-card:hover {
  border-color: var(--primary-color);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.group-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.group-header h4 {
  margin: 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.group-actions {
  display: flex;
  gap: 0.5rem;
}

.status-badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}

.status-active {
  background: rgba(16, 185, 129, 0.2);
  color: #6ee7b7;
  border: 1px solid rgba(16, 185, 129, 0.4);
}

.status-inactive {
  background: rgba(239, 68, 68, 0.2);
  color: #fca5a5;
  border: 1px solid rgba(239, 68, 68, 0.4);
}

/* Group Features */
.group-features {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem;
  background: var(--bg-secondary);
  border-radius: 6px;
  border: 1px solid var(--border-color);
}

.feature-icon {
  font-size: 1.25rem;
}

.feature-action {
  margin-left: auto;
  padding: 0.25rem 0.75rem;
  background: var(--bg-tertiary);
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--primary-color);
  border: 1px solid var(--border-color);
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-secondary);
}

.empty-state p {
  margin-bottom: 0.5rem;
}

.empty-state code {
  background: var(--bg-tertiary);
  color: var(--primary-color);
  padding: 0.25rem 0.5rem;
  border-radius: 3px;
  font-family: 'Courier New', monospace;
  border: 1px solid var(--border-color);
}

/* Config Section */
.config-section {
  background: var(--bg-secondary);
  padding: 2rem;
  border-radius: 12px;
  box-shadow: var(--shadow);
  margin-bottom: 2rem;
  border: 1px solid var(--border-color);
}

.config-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.config-header h3 {
  margin: 0;
  color: var(--text-primary);
}

.config-section p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

/* Toggle Switch */
.switch {
  position: relative;
  display: inline-block;
  width: 60px;
  height: 34px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--bg-tertiary);
  transition: 0.4s;
  border-radius: 34px;
  border: 2px solid var(--border-color);
}

.slider:before {
  position: absolute;
  content: "";
  height: 26px;
  width: 26px;
  left: 4px;
  bottom: 4px;
  background-color: var(--text-secondary);
  transition: 0.4s;
  border-radius: 50%;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

input:checked + .slider {
  background-color: var(--success-color);
  border-color: var(--success-color);
}

input:checked + .slider:before {
  transform: translateX(26px);
  background-color: white;
}

/* Banned Words Manager */
.banned-words-manager, .topics-manager {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
}

.banned-words-manager h4, .topics-manager h4 {
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.add-word-form, .add-topic-form {
  display: flex;
  gap: 1rem;
  margin-bottom: 1rem;
  align-items: center;
}

.add-word-form .form-control, .add-topic-form .form-control {
  flex: 1;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  white-space: nowrap;
  cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
  width: auto;
  cursor: pointer;
}

.banned-words-list, .topics-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  max-height: 400px;
  overflow-y: auto;
}

.word-item, .topic-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem;
  background: var(--bg-tertiary);
  border-radius: 6px;
  border: 1px solid var(--border-color);
  transition: all 0.2s ease;
}

.word-item:hover, .topic-item:hover {
  border-color: var(--border-light);
  background: var(--bg-hover);
}

.word-pattern, .topic-id {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.word-pattern code, .topic-id code {
  background: var(--bg-secondary);
  color: var(--primary-color);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-family: 'Courier New', monospace;
  border: 1px solid var(--border-color);
}

.badge {
  padding: 0.25rem 0.5rem;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}

.badge-wildcard {
  background: rgba(74, 158, 255, 0.2);
  color: var(--primary-color);
  border: 1px solid var(--primary-color);
}

/* Toast Notifications */
#toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  pointer-events: none;
}

.toast {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1rem 1.5rem;
  min-width: 300px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  pointer-events: auto;
  animation: slideIn 0.3s ease-out;
  transition: opacity 0.3s ease-out, transform 0.3s ease-out;
}

.toast.hiding {
  opacity: 0;
  transform: translateX(400px);
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(400px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.toast-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.toast-content {
  flex: 1;
}

.toast-title {
  font-weight: 600;
  margin-bottom: 0.25rem;
  color: var(--text-primary);
}

.toast-message {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin: 0;
}

.toast-success {
  border-left: 4px solid var(--success-color);
}

.toast-error {
  border-left: 4px solid var(--danger-color);
}

.toast-info {
  border-left: 4px solid var(--primary-color);
}

.toast-warning {
  border-left: 4px solid var(--warning-color);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 5px;
  transition: background 0.2s;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--border-light);
}

/* Selection */
::selection {
  background: var(--primary-color);
  color: white;
}

::-moz-selection {
  background: var(--primary-color);
  color: white;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-container {
    flex-direction: column;
    gap: 1rem;
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }

  .group-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .add-word-form, .add-topic-form {
    flex-direction: column;
    align-items: stretch;
  }
  
  .add-topic-form .form-control {
    flex: 1 !important;
  }

  .checkbox-label {
    justify-content: flex-start;
  }
  
  /* Toast notifications for mobile */
  #toast-container {
    bottom: 1rem;
    right: 1rem;
    left: 1rem;
  }
  
  .toast {
    min-width: auto;
    width: 100%;
  }
}