/* ContadorPalabras.es - Modern CSS Styles */

/* CSS Variables for Theming */
:root {
  /* Light Theme Colors */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #f1f5f9;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-tertiary: #94a3b8;
  --border-color: #e2e8f0;
  --shadow-light: rgba(0, 0, 0, 0.05);
  --shadow-medium: rgba(0, 0, 0, 0.1);
  --shadow-heavy: rgba(0, 0, 0, 0.15);
  
  /* Brand Colors */
  --primary-50: #eff6ff;
  --primary-100: #dbeafe;
  --primary-500: #3b82f6;
  --primary-600: #2563eb;
  --primary-700: #1d4ed8;
  --success-500: #10b981;
  --warning-500: #f59e0b;
  --danger-500: #ef4444;
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Consolas', monospace;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  
  /* Transitions */
  --transition-fast: 0.15s ease-in-out;
  --transition-normal: 0.3s ease-in-out;
  --transition-slow: 0.5s ease-in-out;
  
  /* Z-Index Layers */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal: 1040;
  --z-loading: 1050;
}

/* Dark Theme */
.dark-theme {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-tertiary: #94a3b8;
  --border-color: #475569;
  --shadow-light: rgba(0, 0, 0, 0.2);
  --shadow-medium: rgba(0, 0, 0, 0.3);
  --shadow-heavy: rgba(0, 0, 0, 0.4);
}

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

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  line-height: 1.6;
  transition: background-color var(--transition-normal), color var(--transition-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* Loading Screen */
.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-loading);
  transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.loading-screen.hidden {
  opacity: 0;
  visibility: hidden;
}

.loading-content {
  text-align: center;
  color: white;
}

.loading-icon {
  font-size: 4rem;
  margin-bottom: var(--spacing-md);
  animation: bounce 2s infinite;
}

.loading-content h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.loading-content p {
  font-size: 1.1rem;
  opacity: 0.9;
  margin-bottom: var(--spacing-lg);
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 4px solid rgba(255, 255, 255, 0.3);
  border-top: 4px solid white;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto;
}

/* Header */
.header {
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 1px 3px var(--shadow-light);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  transition: all var(--transition-normal);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-lg) 0;
}

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

.logo {
  font-size: 2.5rem;
  line-height: 1;
}

.brand-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--primary-600);
  margin-bottom: var(--spacing-xs);
}

.brand-subtitle {
  font-size: 0.875rem;
  color: var(--text-secondary);
  font-weight: 500;
}

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

.control-btn {
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 1rem;
  min-width: 44px;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.control-btn:hover {
  background-color: var(--bg-tertiary);
  border-color: var(--primary-300);
  transform: translateY(-1px);
}

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

/* Theme Toggle */
.dark-theme .light-icon {
  display: none;
}

.light-theme .dark-icon {
  display: none;
}

/* Main Layout */
.main {
  padding: var(--spacing-xl) 0;
}

.main-grid {
  display: grid;
  grid-template-columns: 1fr 350px;
  gap: var(--spacing-xl);
  align-items: start;
}

/* Cards */
.card {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 6px var(--shadow-light);
  transition: all var(--transition-normal);
  overflow: hidden;
}

.card:hover {
  box-shadow: 0 8px 15px var(--shadow-medium);
  transform: translateY(-2px);
}

.card-title {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

.title-icon {
  font-size: 1.5rem;
}

/* Editor Section */
.editor-section {
  width: 100%;
}

.editor-card {
  padding: 0;
}

.editor-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
  background-color: var(--bg-secondary);
}

.section-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.editor-actions {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.action-btn {
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 0.875rem;
  font-weight: 500;
  min-height: 36px;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.action-btn:hover {
  background-color: var(--bg-tertiary);
  transform: translateY(-1px);
}

.action-btn.secondary {
  background-color: var(--primary-50);
  color: var(--primary-700);
  border-color: var(--primary-200);
}

.action-btn.secondary:hover {
  background-color: var(--primary-100);
  border-color: var(--primary-300);
}

.action-btn.danger {
  background-color: #fef2f2;
  color: #dc2626;
  border-color: #fecaca;
}

.action-btn.danger:hover {
  background-color: #fee2e2;
  border-color: #fca5a5;
}

.action-btn.small {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: 0.75rem;
}

.action-btn.full-width {
  width: 100%;
  justify-content: center;
}

/* Editor Container */
.editor-container {
  position: relative;
  padding: var(--spacing-lg);
}

.text-editor {
  width: 100%;
  min-height: 400px;
  padding: var(--spacing-lg);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: 1rem;
  line-height: 1.6;
  resize: vertical;
  transition: all var(--transition-fast);
  outline: none;
}

.text-editor:focus {
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.text-editor::placeholder {
  color: var(--text-tertiary);
  line-height: 1.6;
}

.char-counter-overlay {
  position: absolute;
  bottom: var(--spacing-md);
  right: var(--spacing-md);
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

/* Quick Stats */
.quick-stats {
  display: flex;
  justify-content: space-around;
  padding: var(--spacing-md) var(--spacing-lg);
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
}

.quick-stat {
  text-align: center;
}

.quick-stat .stat-value {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-600);
  font-family: var(--font-mono);
}

.quick-stat .stat-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 500;
}

/* Sidebar */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

/* Stats Card */
.stats-card {
  padding: var(--spacing-lg);
}

.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
}

.stat-item {
  text-align: center;
  padding: var(--spacing-md);
  background-color: var(--bg-secondary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  transition: all var(--transition-fast);
}

.stat-item:hover {
  background-color: var(--bg-tertiary);
  transform: translateY(-2px);
}

.stat-item.primary {
  background: linear-gradient(135deg, var(--primary-50), var(--primary-100));
  border-color: var(--primary-200);
}

.stat-item .stat-number {
  display: block;
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--primary-600);
  font-family: var(--font-mono);
  margin-bottom: var(--spacing-xs);
}

.stat-item .stat-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 500;
}

/* Advanced Stats */
.advanced-stats-card {
  padding: var(--spacing-lg);
}

.advanced-stats {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.stat-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm);
  background-color: var(--bg-secondary);
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: all var(--transition-fast);
}

.stat-row:hover {
  border-color: var(--border-color);
  background-color: var(--bg-tertiary);
}

.stat-row .stat-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.stat-row .stat-value {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.875rem;
}

/* Word Frequency */
.frequency-card {
  padding: var(--spacing-lg);
}

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

.word-frequency {
  max-height: 200px;
  overflow-y: auto;
}

.frequency-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm);
  border-radius: var(--radius-sm);
  margin-bottom: var(--spacing-xs);
  background-color: var(--bg-secondary);
  transition: all var(--transition-fast);
}

.frequency-item:hover {
  background-color: var(--bg-tertiary);
}

.frequency-word {
  font-weight: 500;
  color: var(--text-primary);
}

.frequency-count {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--primary-600);
  background-color: var(--primary-50);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
}

.no-data {
  text-align: center;
  color: var(--text-tertiary);
  font-style: italic;
  padding: var(--spacing-lg);
}

/* Export Card */
.export-card {
  padding: var(--spacing-lg);
}

.export-actions {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

/* AdSense Banners */
.adsense-banner {
  margin: var(--spacing-md) 0;
  text-align: center;
}

.adsense-header {
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  padding: var(--spacing-sm);
}

.adsense-sidebar {
  margin: 0;
}

.adsense-content {
  background-color: var(--bg-primary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
}

.adsense-mobile {
  background-color: var(--bg-primary);
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-sm);
  display: none;
}

.adsense-label {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-xs);
}

.adsense-placeholder {
  background-color: var(--bg-secondary);
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--spacing-xl);
  color: var(--text-tertiary);
  font-size: 0.875rem;
  min-height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.adsense-placeholder.sidebar-ad {
  min-height: 250px;
}

/* Information Section */
.info-section {
  padding: var(--spacing-2xl) 0;
  background-color: var(--bg-primary);
  border-top: 1px solid var(--border-color);
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
}

.info-card {
  padding: var(--spacing-xl);
  background-color: var(--bg-secondary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
}

.info-title {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-lg);
}

.info-icon {
  font-size: 1.5rem;
}

.info-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.info-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  background-color: var(--bg-primary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  transition: all var(--transition-fast);
}

.info-list li:hover {
  border-color: var(--primary-200);
  background-color: var(--primary-50);
}

.info-list li::before {
  content: "✓";
  color: var(--success-500);
  font-weight: bold;
  margin-top: 2px;
}

/* Footer */
.footer {
  background-color: var(--bg-primary);
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-title {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

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

.footer-description {
  color: var(--text-secondary);
  line-height: 1.6;
  font-size: 0.875rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
  font-size: 0.875rem;
}

.footer-links a:hover {
  color: var(--primary-600);
}

.footer-stats {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.footer-stat {
  text-align: center;
  padding: var(--spacing-md);
  background-color: var(--bg-secondary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.footer-stat .stat-number {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-600);
  font-family: var(--font-mono);
}

.footer-stat .stat-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: var(--spacing-lg);
}

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

.footer-bottom-links {
  display: flex;
  gap: var(--spacing-lg);
}

.footer-bottom-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  transition: color var(--transition-fast);
}

.footer-bottom-links a:hover {
  color: var(--primary-600);
}

/* Modals */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.modal.active {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background-color: var(--bg-primary);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 25px rgba(0, 0, 0, 0.15);
  width: 90%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  transform: translateY(20px) scale(0.95);
  transition: transform var(--transition-normal);
}

.modal.active .modal-content {
  transform: translateY(0) scale(1);
}

.modal-content.large {
  max-width: 800px;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
}

.modal-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-secondary);
  cursor: pointer;
  padding: var(--spacing-sm);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
}

.modal-body {
  padding: var(--spacing-lg);
}

/* Help Modal Specific */
.help-section {
  margin-bottom: var(--spacing-xl);
}

.help-section h4 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.shortcuts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-sm);
}

.shortcut-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-sm);
  background-color: var(--bg-secondary);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

kbd {
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-primary);
  box-shadow: 0 1px 2px var(--shadow-light);
}

.stats-explanation {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.stats-explanation dt {
  font-weight: 600;
  color: var(--text-primary);
}

.stats-explanation dd {
  color: var(--text-secondary);
  margin-left: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
}

/* Word Frequency Modal */
.frequency-controls {
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-md);
  background-color: var(--bg-secondary);
  border-radius: var(--radius-md);
}

.filter-controls {
  display: flex;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.filter-controls label {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 0.875rem;
  color: var(--text-primary);
}

.filter-controls input[type="checkbox"] {
  margin: 0;
}

.filter-controls input[type="number"] {
  width: 60px;
  padding: var(--spacing-xs);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background-color: var(--bg-primary);
  color: var(--text-primary);
}

.full-word-frequency {
  max-height: 400px;
  overflow-y: auto;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--spacing-sm);
}

/* Share Modal */
.share-content {
  text-align: center;
}

.share-url-container {
  display: flex;
  gap: var(--spacing-sm);
  margin: var(--spacing-md) 0;
}

.share-url {
  flex: 1;
  padding: var(--spacing-md);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.875rem;
}

.share-buttons {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  margin-top: var(--spacing-lg);
}

.share-btn {
  padding: var(--spacing-md) var(--spacing-lg);
  border: none;
  border-radius: var(--radius-md);
  color: white;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-weight: 500;
}

.share-btn.twitter {
  background-color: #1da1f2;
}

.share-btn.facebook {
  background-color: #4267b2;
}

.share-btn.linkedin {
  background-color: #0077b5;
}

.share-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

/* Notifications */
.notification-container {
  position: fixed;
  top: var(--spacing-lg);
  right: var(--spacing-lg);
  z-index: var(--z-modal);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.notification {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  box-shadow: 0 4px 6px var(--shadow-medium);
  min-width: 300px;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  transform: translateX(100%);
  transition: transform var(--transition-normal);
}

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

.notification.success {
  border-left: 4px solid var(--success-500);
}

.notification.error {
  border-left: 4px solid var(--danger-500);
}

.notification.warning {
  border-left: 4px solid var(--warning-500);
}

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

.notification-message {
  flex: 1;
  font-size: 0.875rem;
  color: var(--text-primary);
}

.notification-close {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: var(--spacing-xs);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.notification-close:hover {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
}

/* Animations */
@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-20px); }
}

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

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

/* Responsive Design */
@media (max-width: 1024px) {
  .main-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .sidebar {
    order: -1;
  }
  
  .stats-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .adsense-sidebar {
    display: none;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .header-content {
    padding: var(--spacing-md) 0;
  }
  
  .brand-title {
    font-size: 1.5rem;
  }
  
  .editor-header {
    flex-direction: column;
    gap: var(--spacing-md);
    align-items: flex-start;
  }
  
  .editor-actions {
    width: 100%;
    justify-content: space-between;
  }
  
  .text-editor {
    min-height: 300px;
    padding: var(--spacing-md);
  }
  
  .quick-stats {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .info-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-bottom-content {
    flex-direction: column;
    text-align: center;
  }
  
  .adsense-mobile {
    display: block;
  }
  
  .adsense-header,
  .adsense-content {
    display: none;
  }
  
  .shortcuts-grid {
    grid-template-columns: 1fr;
  }
  
  .share-buttons {
    flex-direction: column;
  }
  
  .notification {
    min-width: auto;
    width: calc(100vw - 2rem);
  }
}

@media (max-width: 480px) {
  .header-brand {
    gap: var(--spacing-sm);
  }
  
  .logo {
    font-size: 2rem;
  }
  
  .brand-title {
    font-size: 1.25rem;
  }
  
  .brand-subtitle {
    font-size: 0.75rem;
  }
  
  .header-controls {
    gap: var(--spacing-xs);
  }
  
  .control-btn {
    padding: var(--spacing-xs) var(--spacing-sm);
    min-width: 40px;
    min-height: 40px;
  }
  
  .section-title {
    font-size: 1.25rem;
  }
  
  .editor-actions {
    flex-direction: column;
  }
  
  .action-btn {
    justify-content: center;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .modal-content {
    width: 95%;
    margin: var(--spacing-sm);
  }
  
  .filter-controls {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
}

/* Print Styles */
@media print {
  .header,
  .footer,
  .adsense-banner,
  .action-btn,
  .modal,
  .notification-container {
    display: none !important;
  }
  
  .main {
    padding: 0;
  }
  
  .main-grid {
    display: block;
  }
  
  .card {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid #ccc;
  }
  
  .text-editor {
    border: 1px solid #ccc;
    background: white;
    color: black;
  }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
  :root {
    --border-color: #000000;
    --shadow-light: rgba(0, 0, 0, 0.3);
    --shadow-medium: rgba(0, 0, 0, 0.5);
    --shadow-heavy: rgba(0, 0, 0, 0.7);
  }
  
  .dark-theme {
    --border-color: #ffffff;
    --bg-primary: #000000;
    --bg-secondary: #1a1a1a;
    --text-primary: #ffffff;
  }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .loading-icon {
    animation: none;
  }
  
  .loading-spinner {
    animation: none;
    border: 4px solid var(--text-primary);
  }
}

/* Focus Styles for Accessibility */
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--primary-500);
  outline-offset: 2px;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb {
  background: var(--primary-500);
  border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-600);
}

/* Selection Styles */
::selection {
  background-color: rgba(59, 130, 246, 0.2);
  color: inherit;
}

.dark-theme ::selection {
  background-color: rgba(59, 130, 246, 0.4);
}

/* Utility Classes */
.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;
}

.fade-in {
  animation: fadeIn 0.6s ease-out;
}

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