/* 📚 Enhanced Content & Learning System Styles */

/* Difficulty Level Styles */
.difficulty-selector {
  padding: 1rem;
  margin-bottom: 1rem;
}

.difficulty-badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 1rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.difficulty-beginner { background: var(--success); color: white; }
.difficulty-intermediate { background: var(--warning); color: white; }
.difficulty-advanced { background: var(--error); color: white; }

/* Phrase Learning Styles */
.phrase-mode-toggle {
  padding: 1rem;
  margin-bottom: 1rem;
  background: var(--glass-bg-light);
  border-radius: var(--border-radius);
  border: 1px solid var(--glass-border-light);
}

.phrases-categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
  padding: 2rem 0;
}

.phrase-category-card {
  background: var(--glass-bg-light);
  border: 1px solid var(--glass-border-light);
  border-radius: var(--border-radius-lg);
  padding: 1.5rem;
  backdrop-filter: blur(20px);
  transition: all var(--animation-normal) var(--smooth);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.phrase-category-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--glass-shadow-strong);
  background: var(--glass-bg-strong);
}

.phrase-category-card .category-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  margin-bottom: 1rem;
}

.phrase-category-card .category-icon {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

.phrase-category-card .category-name {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.phrase-category-card .category-name-arabic {
  font-size: 1rem;
  color: var(--text-secondary);
  font-family: 'Noto Sans Arabic', sans-serif;
}

.phrase-category-card .category-stats {
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.875rem;
}

/* Phrase Learning Interface */
.phrase-learning-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem;
}

.phrase-flashcard-container {
  display: flex;
  justify-content: center;
  margin: 2rem 0;
}

.phrase-flashcard {
  width: 100%;
  max-width: 600px;
  min-height: 400px;
  background: var(--glass-bg-light);
  border: 1px solid var(--glass-border-light);
  border-radius: var(--border-radius-lg);
  backdrop-filter: blur(20px);
  box-shadow: var(--glass-shadow-light);
  padding: 2rem;
  position: relative;
  transition: all var(--animation-normal) var(--smooth);
}

.phrase-flashcard:hover {
  transform: translateY(-2px);
  box-shadow: var(--glass-shadow-strong);
}

.phrase-flashcard.flipped .phrase-front {
  display: none;
}

.phrase-flashcard.flipped .phrase-back {
  display: block !important;
}

.phrase-front {
  text-align: center;
  padding: 2rem 0;
}

.phrase-turkish {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary-blue);
  margin-bottom: 1rem;
  line-height: 1.2;
}

.phrase-pronunciation {
  font-size: 1.125rem;
  color: var(--accent-orange);
  margin-bottom: 1.5rem;
  font-style: italic;
}

.phrase-usage {
  font-size: 1rem;
  color: var(--text-secondary);
  background: var(--glass-bg-light);
  padding: 1rem;
  border-radius: var(--border-radius);
  border-left: 4px solid var(--primary-blue);
}

.phrase-back {
  display: none;
}

.phrase-arabic {
  font-size: 1.5rem;
  color: var(--text-primary);
  text-align: center;
  margin-bottom: 1rem;
  font-family: 'Noto Sans Arabic', sans-serif;
  direction: rtl;
}

.phrase-english {
  font-size: 1.25rem;
  color: var(--text-secondary);
  text-align: center;
  margin-bottom: 2rem;
  font-weight: 500;
}

.cultural-note {
  background: var(--glass-bg-light);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  border-left: 4px solid var(--accent-purple);
}

.cultural-note h4 {
  color: var(--accent-purple);
  margin-bottom: 0.75rem;
  font-size: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.cultural-note p {
  color: var(--text-primary);
  font-size: 0.95rem;
  line-height: 1.5;
  margin: 0;
}

.phrase-examples {
  background: var(--glass-bg-light);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  border-left: 4px solid var(--primary-green);
}

.phrase-examples h4 {
  color: var(--primary-green);
  margin-bottom: 1rem;
  font-size: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.example-item {
  margin-bottom: 1rem;
  padding: 1rem;
  background: var(--bg-secondary);
  border-radius: var(--border-radius);
}

.example-item:last-child {
  margin-bottom: 0;
}

.example-context {
  font-size: 0.875rem;
  color: var(--text-accent);
  font-weight: 600;
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.example-turkish {
  font-size: 1rem;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.example-arabic {
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-family: 'Noto Sans Arabic', sans-serif;
  direction: rtl;
}

.flip-phrase-btn {
  position: absolute;
  bottom: 1rem;
  right: 1rem;
  background: var(--primary-blue);
  color: white;
  border: none;
  border-radius: 50%;
  width: 3rem;
  height: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--animation-normal) var(--smooth);
  box-shadow: var(--glass-shadow-light);
}

.flip-phrase-btn:hover {
  transform: scale(1.1) rotate(180deg);
  background: var(--primary-blue);
  box-shadow: var(--glass-shadow-strong);
}

.phrase-navigation {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 2rem;
  padding: 1rem;
  background: var(--glass-bg-light);
  border-radius: var(--border-radius);
  backdrop-filter: blur(20px);
}

.phrase-navigation button {
  background: var(--primary-blue);
  color: white;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--animation-normal) var(--smooth);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.phrase-navigation button:hover:not(:disabled) {
  background: var(--rosetta-blue-dark);
  transform: translateY(-1px);
}

.phrase-navigation button:disabled {
  background: var(--gray-400);
  cursor: not-allowed;
  transform: none;
}

.phrase-counter {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 1.125rem;
}

/* Multiple Examples Enhancement */
.multiple-examples {
  background: var(--glass-bg-light);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  margin: 1rem 0;
  border-left: 4px solid var(--primary-green);
}

.multiple-examples h4 {
  color: var(--primary-green);
  margin-bottom: 1rem;
  font-size: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Regional Variations */
.regional-variations {
  background: var(--glass-bg-light);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  margin: 1rem 0;
  border-left: 4px solid var(--accent-orange);
}

.regional-variations h4 {
  color: var(--accent-orange);
  margin-bottom: 1rem;
  font-size: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.variation-item {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
  padding: 0.75rem;
  background: var(--bg-secondary);
  border-radius: var(--border-radius);
  align-items: center;
}

.variation-item:last-child {
  margin-bottom: 0;
}

.region-name {
  font-weight: 600;
  color: var(--text-accent);
  min-width: 80px;
}

.variant {
  font-weight: 500;
  color: var(--text-primary);
  background: var(--glass-bg-light);
  padding: 0.25rem 0.5rem;
  border-radius: 0.25rem;
}

.usage-note {
  color: var(--text-secondary);
  font-style: italic;
  font-size: 0.875rem;
}

/* Cultural Context Enhancement */
.cultural-context {
  background: var(--glass-bg-light);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  margin: 1rem 0;
  border-left: 4px solid var(--accent-purple);
}

.cultural-context h4 {
  color: var(--accent-purple);
  margin-bottom: 1rem;
  font-size: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.cultural-context p {
  color: var(--text-primary);
  line-height: 1.6;
  font-size: 0.95rem;
}

/* Session Header Enhancement */
.session-header {
  text-align: center;
  padding: 2rem;
  margin-bottom: 2rem;
  background: var(--glass-bg-light);
  backdrop-filter: blur(20px);
}

.session-header h2 {
  color: var(--text-primary);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
}

.session-progress {
  background: var(--glass-bg-light);
  height: 0.5rem;
  border-radius: 1rem;
  overflow: hidden;
  margin-top: 1rem;
}

.session-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary-blue), var(--accent-purple));
  border-radius: 1rem;
  transition: width var(--animation-extra-slow) var(--smooth);
  position: relative;
}

/* Enhanced Navigation Styles */
.nav-arabic {
  font-size: 0.875rem;
  color: var(--text-secondary);
  font-family: 'Noto Sans Arabic', sans-serif;
  display: block;
  margin-top: 0.25rem;
}

.nav-item[data-section="phrases"] {
  background: linear-gradient(135deg, rgba(156, 39, 176, 0.1), rgba(156, 39, 176, 0.05));
  border-left: 3px solid var(--accent-purple);
}

.nav-item[data-section="phrases"]:hover {
  background: linear-gradient(135deg, rgba(156, 39, 176, 0.2), rgba(156, 39, 176, 0.1));
}

.nav-item[data-section="phrases"].active {
  background: linear-gradient(135deg, var(--accent-purple), rgba(156, 39, 176, 0.8));
  color: white;
}

/* Dark Mode Compatibility */
[data-theme="dark"] .phrase-category-card,
[data-theme="dark"] .phrase-flashcard,
[data-theme="dark"] .cultural-note,
[data-theme="dark"] .phrase-examples,
[data-theme="dark"] .multiple-examples,
[data-theme="dark"] .regional-variations,
[data-theme="dark"] .cultural-context,
[data-theme="dark"] .session-header,
[data-theme="dark"] .phrase-navigation {
  background: var(--glass-bg-light) !important;
  border-color: var(--glass-border-light) !important;
  backdrop-filter: blur(20px) !important;
}

[data-theme="dark"] .example-item,
[data-theme="dark"] .variation-item {
  background: var(--bg-secondary) !important;
}

[data-theme="dark"] .phrase-turkish,
[data-theme="dark"] .phrase-arabic,
[data-theme="dark"] .phrase-english,
[data-theme="dark"] .example-turkish,
[data-theme="dark"] .example-arabic,
[data-theme="dark"] .phrase-counter {
  color: var(--text-primary) !important;
}

[data-theme="dark"] .phrase-pronunciation,
[data-theme="dark"] .phrase-usage,
[data-theme="dark"] .usage-note,
[data-theme="dark"] .example-context {
  color: var(--text-secondary) !important;
}

/* Responsive Design */
@media (max-width: 768px) {
  .phrases-categories-grid {
    grid-template-columns: 1fr;
    padding: 1rem 0;
  }
  
  .phrase-learning-container {
    padding: 1rem;
  }
  
  .phrase-flashcard {
    min-height: 300px;
    padding: 1.5rem;
  }
  
  .phrase-turkish {
    font-size: 1.5rem;
  }
  
  .phrase-navigation {
    flex-direction: column;
    gap: 1rem;
  }
  
  .phrase-navigation button {
    width: 100%;
    justify-content: center;
  }
  
  .variation-item {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .region-name {
    min-width: auto;
  }
}

/* Accessibility Improvements */
@media (prefers-reduced-motion: reduce) {
  .phrase-flashcard,
  .phrase-category-card,
  .flip-phrase-btn {
    transition: none !important;
  }
  
  .flip-phrase-btn:hover {
    transform: scale(1.1) !important;
  }
}

/* Focus States */
.phrase-category-card:focus,
.phrase-flashcard:focus,
.flip-phrase-btn:focus {
  outline: 2px solid var(--primary-blue);
  outline-offset: 2px;
}

/* Enhanced Animations */
@keyframes phraseSlideIn {
  0% {
    transform: translateX(100%);
    opacity: 0;
  }
  100% {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes phraseSlideOut {
  0% {
    transform: translateX(0);
    opacity: 1;
  }
  100% {
    transform: translateX(-100%);
    opacity: 0;
  }
}

.phrase-enter {
  animation: phraseSlideIn var(--animation-slow) var(--smooth);
}

.phrase-exit {
  animation: phraseSlideOut var(--animation-slow) var(--smooth);
}

/* Content Statistics Display */
.content-stats {
  display: flex;
  justify-content: space-around;
  padding: 1rem;
  background: var(--glass-bg-light);
  border-radius: var(--border-radius);
  margin: 1rem 0;
}

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

.stat-number {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-blue);
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
}

/* Loading States for Content */
.content-loading {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 3rem;
  color: var(--text-secondary);
}

.content-loading .spinner {
  margin-right: 1rem;
  width: 1.5rem;
  height: 1.5rem;
  border: 2px solid var(--glass-border-light);
  border-top: 2px solid var(--primary-blue);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}