/* ========================================
   DARK MODE THEME
   ======================================== */

[data-theme="dark"] {
  --color-bg: #0f172a;
  --color-bg-secondary: #1e293b;
  --color-text: #f1f5f9;
  --color-text-secondary: #94a3b8;
  --color-primary: #3b82f6;
  --color-primary-hover: #60a5fa;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  --color-border: #334155;
}

/* Smooth transition between themes */
body {
  transition: background-color 0.3s ease, color 0.3s ease;
}

.header,
.sidebar,
.dash-card,
.content-section,
.key-concept {
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.tab-bar,
.tab {
  transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

/* ========================================
   CONTENT SECTIONS (fragments)
   ======================================== */

.content-section {
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
}

.content-section h2 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.content-section h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  margin-top: var(--spacing-md);
}

.content-section p {
  margin-bottom: var(--spacing-sm);
  line-height: 1.7;
}

.content-section ul {
  margin: var(--spacing-xs) 0 var(--spacing-sm) var(--spacing-md);
}

.content-section li {
  margin-bottom: var(--spacing-xs);
  line-height: 1.6;
}

/* Key concept highlight */
.key-concept {
  padding: var(--spacing-md);
  background-color: var(--color-bg-secondary);
  border-left: 4px solid var(--color-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: var(--spacing-sm) 0;
  font-size: var(--font-size-lg);
}

/* Content table */
.content-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--spacing-sm) 0;
}

.content-table th,
.content-table td {
  padding: var(--spacing-xs) var(--spacing-sm);
  border: 1px solid var(--color-border);
  text-align: left;
}

.content-table th {
  background-color: var(--color-bg-secondary);
  font-weight: 600;
}

.content-table tr:nth-child(even) td {
  background-color: var(--color-bg-secondary);
}

/* Responsive table wrapper */
.table-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: var(--spacing-sm) 0;
}

@media (max-width: 768px) {
  .content-table th,
  .content-table td {
    padding: var(--spacing-xs);
    font-size: var(--font-size-sm);
  }
}

/* Section badge */
.section-badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-radius: var(--radius-sm);
  margin-bottom: var(--spacing-xs);
}

.section-badge--lesson {
  background-color: var(--color-primary);
  color: white;
}

.section-badge--exercise {
  background-color: var(--color-success);
  color: white;
}

.section-badge--reference {
  background-color: var(--color-warning);
  color: #000;
}

/* Retiens section */
.content-section.retiens {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
}

.content-section.retiens h3 {
  color: var(--color-success);
}

.section-badge--flashcard {
  background-color: var(--color-warning);
  color: #000;
}

.section-badge--quiz {
  background-color: var(--color-success);
  color: white;
}

/* ========================================
   FLASHCARDS
   ======================================== */

.flashcard {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
  cursor: pointer;
  transition: border-color 0.2s ease;
}

.flashcard:hover {
  border-color: var(--color-primary);
}

.flashcard-question {
  font-weight: 600;
  font-size: var(--font-size-base);
}

.flashcard-answer {
  display: none;
  margin-top: var(--spacing-sm);
  padding-top: var(--spacing-sm);
  border-top: 1px solid var(--color-border);
  line-height: 1.6;
}

.flashcard.revealed .flashcard-answer {
  display: block;
}

/* Flashcard Leitner box badge */
.flashcard-box-badge {
  display: inline-block;
  margin-left: var(--spacing-xs);
  padding: 0.1rem 0.4rem;
  font-size: 0.65rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  background-color: var(--color-primary);
  color: white;
  vertical-align: middle;
}

/* Flashcard action buttons */
.flashcard-actions {
  display: flex;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-sm);
}

.flashcard-btn {
  flex: 1;
  padding: var(--spacing-xs) var(--spacing-sm);
  border: none;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all 0.15s ease;
}

.flashcard-btn--wrong {
  background-color: rgba(239, 68, 68, 0.15);
  color: var(--color-error);
}

.flashcard-btn--wrong:hover {
  background-color: rgba(239, 68, 68, 0.25);
}

.flashcard-btn--right {
  background-color: rgba(16, 185, 129, 0.15);
  color: var(--color-success);
}

.flashcard-btn--right:hover {
  background-color: rgba(16, 185, 129, 0.25);
}

@media (max-width: 768px) {
  .flashcard-btn {
    padding: var(--spacing-sm);
    min-height: 2.75rem;
    font-size: var(--font-size-base);
  }
}

/* Flashcard answer feedback */
.flashcard--correct {
  border-color: var(--color-success) !important;
  transition: border-color 0.3s ease;
}

.flashcard--wrong {
  border-color: var(--color-error) !important;
  transition: border-color 0.3s ease;
}

/* ========================================
   QUIZ
   ======================================== */

.quiz-prompt {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.quiz-options {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.quiz-option {
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.quiz-option:hover {
  border-color: var(--color-primary);
}

@media (max-width: 768px) {
  .quiz-option {
    padding: var(--spacing-md);
    min-height: 3rem;
  }
}

.quiz-option.correct {
  border-color: var(--color-success);
  background-color: rgba(16, 185, 129, 0.15);
}

.quiz-option.incorrect {
  border-color: var(--color-error);
  background-color: rgba(239, 68, 68, 0.15);
}

.quiz-question {
  margin-bottom: var(--spacing-md);
}

.quiz-question h4 {
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

/* Quiz Results Banner */
.quiz-results {
  margin-top: var(--spacing-md);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  text-align: center;
}

.quiz-results--pass {
  background-color: rgba(16, 185, 129, 0.15);
  border: 2px solid var(--color-success);
}

.quiz-results--fail {
  background-color: rgba(239, 68, 68, 0.1);
  border: 2px solid var(--color-error);
}

.quiz-results-score {
  font-size: var(--font-size-2xl);
  font-weight: 800;
}

.quiz-results--pass .quiz-results-score { color: var(--color-success); }
.quiz-results--fail .quiz-results-score { color: var(--color-error); }

.quiz-results-text {
  margin-top: var(--spacing-xs);
  line-height: 1.6;
}

.quiz-retry-btn {
  margin-top: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-md);
  background-color: var(--color-primary);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  font-weight: 600;
  cursor: pointer;
}

.quiz-retry-btn:hover {
  background-color: var(--color-primary-hover);
}

/* Content loading state */
.content--loading {
  opacity: 0.5;
  transition: opacity 0.15s ease;
}

/* ========================================
   WORKFLOW CARDS
   ======================================== */

.workflow-card {
  background-color: var(--color-bg-secondary);
  border-left: 4px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
}

.workflow-card.critical {
  border-left-color: var(--color-error);
}

.workflow-card.important {
  border-left-color: var(--color-warning);
}

.workflow-card.operational {
  border-left-color: var(--color-primary);
}

.workflow-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xs);
  flex-wrap: wrap;
}

.workflow-badge {
  display: inline-block;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.7rem;
  font-weight: 700;
  color: white;
}

.workflow-badge.critical { background: var(--color-error); }
.workflow-badge.important { background: var(--color-warning); color: #000; }
.workflow-badge.operational { background: var(--color-primary); }

.workflow-card ol {
  margin: var(--spacing-xs) 0 0 var(--spacing-md);
}

.workflow-card li {
  margin-bottom: var(--spacing-xs);
  line-height: 1.6;
}

.warning-box {
  margin-top: var(--spacing-sm);
  padding: var(--spacing-sm);
  background: rgba(239, 68, 68, 0.1);
  border-radius: var(--radius-sm);
  font-weight: 600;
  color: var(--color-error);
}

/* ========================================
   SKILL CARDS
   ======================================== */

.skill-card {
  background-color: var(--color-bg-secondary);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
}

.skill-card.critical {
  border-left-color: var(--color-error);
}

.skill-card.tk {
  border-left-color: #0d9488;
}

.skill-card h3 {
  font-family: 'Courier New', monospace;
  margin-top: 0;
}

.skill-usage {
  background: rgba(59, 130, 246, 0.1);
  padding: var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-family: 'Courier New', monospace;
  font-size: var(--font-size-sm);
  margin-top: var(--spacing-xs);
}

/* ========================================
   MASTER CARDS
   ======================================== */

.master-grid {
  display: grid;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-sm);
}

@media (min-width: 768px) {
  .master-grid { grid-template-columns: repeat(2, 1fr); }
}

.master-card {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.master-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.master-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-xs);
  font-size: var(--font-size-lg);
}

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

.master-triggers {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
  margin-top: var(--spacing-xs);
}

.trigger-tag {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.7rem;
  color: var(--color-text-secondary);
}

/* ========================================
   SYMBIOSIS CARDS
   ======================================== */

.symbiosis-card {
  background-color: var(--color-bg-secondary);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
}

.symbiosis-masters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
  margin-bottom: var(--spacing-xs);
}

.master-tag {
  padding: 0.25rem 0.5rem;
  background: linear-gradient(135deg, var(--color-primary), var(--color-success));
  color: white;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
}

/* ========================================
   SCENARIO CARDS
   ======================================== */

.scenario-card {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
}

.scenario-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xs);
}

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

.scenario-situation {
  padding: var(--spacing-sm);
  background: rgba(59, 130, 246, 0.08);
  border-left: 3px solid var(--color-primary);
  border-radius: var(--radius-sm);
  margin-bottom: var(--spacing-sm);
}

.scenario-solution {
  display: none;
  padding: var(--spacing-sm);
  background: rgba(16, 185, 129, 0.08);
  border-left: 3px solid var(--color-success);
  border-radius: var(--radius-sm);
  margin-top: var(--spacing-sm);
  line-height: 1.7;
}

.scenario-card.revealed .scenario-solution {
  display: block;
}

.scenario-toggle {
  padding: 0.5rem 1rem;
  background-color: var(--color-primary);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  font-weight: 600;
  cursor: pointer;
  font-size: var(--font-size-sm);
}

.scenario-toggle:hover {
  background-color: var(--color-primary-hover);
}

@media (max-width: 768px) {
  .scenario-toggle {
    width: 100%;
    padding: var(--spacing-sm);
    min-height: 2.75rem;
  }
}

.scenario-steps ol {
  margin: var(--spacing-xs) 0 0 var(--spacing-md);
}

/* ========================================
   CHEATSHEET GRID
   ======================================== */

.cheatsheet-grid {
  display: grid;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-sm);
}

@media (min-width: 768px) {
  .cheatsheet-grid { grid-template-columns: repeat(2, 1fr); }
}

.cheatsheet-card {
  background-color: var(--color-bg-secondary);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
}

.cheatsheet-card h3 {
  font-size: var(--font-size-base);
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
  margin-top: 0;
}

.cheatsheet-item {
  padding: 0.375rem 0;
  border-bottom: 1px solid var(--color-border);
  font-size: var(--font-size-sm);
}

.cheatsheet-item:last-child {
  border-bottom: none;
}

/* ========================================
   DEPTH LEVELS (E/A/X)
   ======================================== */

/* Default: show essential only */
[data-depth-level="essential"] [data-depth="advanced"],
[data-depth-level="essential"] [data-depth="expert"] {
  display: none;
}

[data-depth-level="advanced"] [data-depth="expert"] {
  display: none;
}

/* Visual indicator for advanced/expert sections */
[data-depth="advanced"] {
  border-left: 3px solid var(--color-warning);
  padding-left: var(--spacing-md);
}

[data-depth="expert"] {
  border-left: 3px solid var(--color-error);
  padding-left: var(--spacing-md);
}