/* ============================================
   VISTA DE MÓDULOS ORGANIZADOS
   ============================================ */
.view-toggle {
    display: flex;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.05);
    padding: 0.25rem;
    border-radius: 12px;
}

.toggle-btn {
    padding: 0.5rem 1.25rem;
    border: none;
    background: transparent;
    color: #a0aec0;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s ease;
}

.toggle-btn:hover {
    color: #ffffff;
}

.toggle-btn.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.modules-view {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.level-section {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.level-section-header {
    padding: 2rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255, 255, 255, 0.02);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.2s ease;
}

.level-section-header:hover {
    background: rgba(255, 255, 255, 0.05);
}

.level-section-title {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.level-section-title h3 {
    margin: 0;
    font-size: 1.5rem;
}

.level-section-icon {
    font-size: 2rem;
}

.level-section-meta {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    color: #718096;
    font-size: 0.9rem;
}

.expand-icon {
    font-size: 1.5rem;
    transition: transform 0.3s ease;
}

.level-section.expanded .expand-icon {
    transform: rotate(180deg);
}

.level-section-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s ease;
}

.level-section.expanded .level-section-content {
    max-height: 5000px;
}

.module-group {
    padding: 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.module-group:last-child {
    border-bottom: none;
}

.module-header {
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid rgba(255, 255, 255, 0.1);
}

.module-header h4 {
    margin: 0;
    color: #ffffff;
    font-size: 1.2rem;
}

.module-lessons {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

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

.lesson-id {
    font-size: 0.85rem;
    color: #718096;
    font-weight: 600;
}

.lesson-desc {
    color: #a0aec0;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.status-badge {
    font-size: 0.85rem;
    color: #48bb78;
    font-weight: 600;
}

.status-btn {
    font-size: 0.85rem;
    color: #667eea;
    font-weight: 600;
}

.lesson-card.completed {
    border-color: rgba(72, 187, 120, 0.3);
    background: rgba(72, 187, 120, 0.05);
}

/* Level-specific colors */
.level-section.beginner .level-section-header {
    border-left: 4px solid #4facfe;
}

.level-section.intermediate .level-section-header {
    border-left: 4px solid #667eea;
}

.level-section.advanced .level-section-header {
    border-left: 4px solid #f093fb;
}

.level-section.expert .level-section-header {
    border-left: 4px solid #fee140;
}