/* ========================================
   MODULAR LESSON BUILDER STYLES
   ======================================== */

/* Builder Container */
.lesson-builder-page {
    background: var(--color-gray-50);
    min-height: 100vh;
}

#lessonBuilderContainer {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

/* Builder Header */
.builder-header {
    background: white;
    border-radius: var(--radius-xl);
    padding: 1.5rem 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.builder-header-left,
.builder-header-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.builder-title-input {
    flex: 1;
    min-width: 300px;
}

.builder-title-input input {
    width: 100%;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-navy);
    border: 2px solid transparent;
    padding: 0.5rem;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.builder-title-input input:hover {
    border-color: var(--color-gray-200);
}

.builder-title-input input:focus {
    outline: none;
    border-color: var(--color-lvlup-blue-light);
    background: var(--color-gray-50);
}

.draft-badge {
    background: var(--color-warning);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.published-badge {
    background: var(--color-success);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Block Palette */
.block-palette {
    background: white;
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-md);
}

.block-palette-header {
    margin-bottom: 1rem;
}

.block-palette-header h3 {
    font-size: 1.125rem;
    color: var(--color-navy);
    margin: 0;
}

.block-palette-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 1rem;
}

.block-palette-item {
    background: var(--gradient-subtle);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    padding: 1rem;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.block-palette-item:hover {
    border-color: var(--color-lvlup-blue-light);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.block-palette-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.block-palette-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-gray-700);
}

/* Builder Content */
.builder-content {
    background: white;
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    min-height: 400px;
}

.builder-empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--color-gray-500);
}

.builder-empty-state i {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.builder-empty-state h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

/* Block Item */
.block-item {
    background: var(--color-gray-50);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    margin-bottom: 1.5rem;
    transition: all var(--transition-fast);
}

.block-item:hover {
    border-color: var(--color-lvlup-blue-light);
    box-shadow: var(--shadow-md);
}

.block-item.dragging {
    opacity: 0.5;
}

.block-item.drag-over {
    border-color: var(--color-lvlup-blue);
    box-shadow: 0 0 0 3px rgba(91, 163, 187, 0.15);
}

/* Block Toolbar */
.block-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    background: white;
    border-bottom: 2px solid var(--color-gray-200);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.block-toolbar-left,
.block-toolbar-right {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.block-type-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-gray-700);
}

.btn-icon {
    background: transparent;
    border: none;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--color-gray-600);
    transition: all var(--transition-fast);
}

.btn-icon:hover:not(:disabled) {
    background: var(--color-lvlup-blue-light);
    color: white;
}

.btn-icon.danger:hover:not(:disabled) {
    background: var(--color-danger);
    color: white;
}

.btn-icon:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.drag-handle {
    cursor: grab;
    color: var(--color-gray-400);
    padding: 0 0.5rem;
}

.drag-handle:active {
    cursor: grabbing;
}

/* Block Content */
.block-content {
    padding: 2rem;
}

.block-placeholder {
    text-align: center;
    padding: 3rem 2rem;
    color: var(--color-gray-400);
    font-size: 1.125rem;
}

.block-placeholder i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

/* Block Specific Styles */
.block-heading {
    color: var(--color-navy);
    margin: 0;
}

.block-text {
    color: var(--color-gray-700);
    line-height: 1.7;
    font-size: 1rem;
}

.block-video {
    margin: 0;
}

.block-video h3 {
    color: var(--color-navy);
    margin-bottom: 1rem;
}

.video-caption {
    margin-top: 0.75rem;
    color: var(--color-gray-600);
    font-size: 0.875rem;
    text-align: center;
}

.block-image {
    text-align: center;
}

.block-image img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
}

.image-caption {
    margin-top: 0.75rem;
    color: var(--color-gray-600);
    font-size: 0.875rem;
}

.block-image-gallery {
    display: grid;
    gap: 1.5rem;
}

.gallery-item {
    position: relative;
}

.gallery-item img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
}

.image-placeholder {
    aspect-ratio: 4/3;
    background: var(--color-gray-200);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-gray-400);
    font-size: 2rem;
}

.gallery-caption {
    margin-top: 0.5rem;
    color: var(--color-gray-600);
    font-size: 0.875rem;
}

.block-settings-grid h3 {
    color: var(--color-navy);
    margin-bottom: 1.5rem;
}

.settings-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.setting-item {
    background: var(--gradient-subtle);
    padding: 1rem;
    border-radius: var(--radius-lg);
    text-align: center;
}

.setting-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-gray-600);
    margin-bottom: 0.5rem;
}

.setting-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-lvlup-blue);
    font-family: 'Courier New', monospace;
}

.settings-notes {
    background: rgba(91, 163, 187, 0.1);
    padding: 1rem;
    border-radius: var(--radius-md);
    color: var(--color-gray-700);
    font-size: 0.9375rem;
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.settings-notes i {
    color: var(--color-lvlup-blue);
    margin-top: 0.25rem;
}

.block-checklist h3 {
    color: var(--color-navy);
    margin-bottom: 1rem;
}

.checklist-items {
    background: white;
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
}

.checklist-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem;
    border-bottom: 1px solid var(--color-gray-200);
}

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

.checklist-item input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--color-lvlup-blue);
}

.checklist-item label {
    flex: 1;
    cursor: pointer;
    font-size: 1rem;
    color: var(--color-gray-700);
}

.block-steps h3 {
    color: var(--color-navy);
    margin-bottom: 1.5rem;
}

.steps-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.step-item {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    background: var(--gradient-subtle);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
}

.step-number {
    width: 48px;
    height: 48px;
    background: var(--gradient-card);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 700;
    flex-shrink: 0;
    box-shadow: var(--shadow-md);
}

.step-text {
    flex: 1;
    font-size: 1rem;
    color: var(--color-gray-700);
    line-height: 1.6;
}

.block-callout {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    border-left: 4px solid;
}

.callout-info {
    background: rgba(91, 163, 187, 0.1);
    border-left-color: var(--color-lvlup-blue);
}

.callout-success {
    background: rgba(16, 185, 129, 0.1);
    border-left-color: var(--color-success);
}

.callout-warning {
    background: rgba(245, 158, 11, 0.1);
    border-left-color: var(--color-warning);
}

.callout-danger {
    background: rgba(239, 68, 68, 0.1);
    border-left-color: var(--color-danger);
}

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

.callout-info .callout-icon {
    color: var(--color-lvlup-blue);
}

.callout-success .callout-icon {
    color: var(--color-success);
}

.callout-warning .callout-icon {
    color: var(--color-warning);
}

.callout-danger .callout-icon {
    color: var(--color-danger);
}

.callout-content h4 {
    color: var(--color-navy);
    margin: 0 0 0.5rem 0;
    font-size: 1.125rem;
}

.callout-content p {
    margin: 0;
    color: var(--color-gray-700);
    line-height: 1.6;
}

.block-divider {
    border: none;
    height: 2px;
    background: var(--color-gray-300);
    margin: 2rem 0;
}

.divider-solid {
    background: var(--color-gray-300);
}

.divider-dashed {
    background: repeating-linear-gradient(
        90deg,
        var(--color-gray-300) 0,
        var(--color-gray-300) 8px,
        transparent 8px,
        transparent 16px
    );
}

.divider-dotted {
    background: repeating-linear-gradient(
        90deg,
        var(--color-gray-300) 0,
        var(--color-gray-300) 4px,
        transparent 4px,
        transparent 12px
    );
}

.block-accordion {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.accordion-item {
    background: white;
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.accordion-header {
    padding: 1.25rem 1.5rem;
    background: var(--gradient-subtle);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    color: var(--color-navy);
    transition: all var(--transition-fast);
}

.accordion-header:hover {
    background: rgba(91, 163, 187, 0.1);
}

.accordion-content {
    padding: 1.5rem;
    color: var(--color-gray-700);
    line-height: 1.7;
}

/* Preview Mode */
.preview-mode {
    padding: 4rem 2rem;
}

.block-preview {
    margin-bottom: 2rem;
}

/* Form Styles in Edit Modal */
.form-group {
    margin-bottom: 1.5rem;
}

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

.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-lvlup-blue-light);
    box-shadow: 0 0 0 3px rgba(91, 163, 187, 0.15);
}

.form-text {
    display: block;
    margin-top: 0.5rem;
    font-size: 0.875rem;
    color: var(--color-gray-600);
}

.form-row {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.form-col {
    flex: 1;
}

.form-col-auto {
    flex: 0 0 auto;
}

.mt-2 {
    margin-top: 0.5rem;
}

/* Step Number Badge in Form */
.step-number-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--gradient-card);
    color: white;
    border-radius: 50%;
    font-weight: 700;
    font-size: 1rem;
}

/* Template Library */
.template-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
}

.template-card {
    background: var(--gradient-subtle);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.template-card:hover {
    border-color: var(--color-lvlup-blue-light);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.template-card h4 {
    color: var(--color-navy);
    margin: 0 0 0.5rem 0;
}

.template-card p {
    color: var(--color-gray-600);
    font-size: 0.875rem;
    margin: 0 0 1rem 0;
}

.template-block-count {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-lvlup-blue);
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .builder-header {
        flex-direction: column;
        align-items: stretch;
    }
    
    .builder-header-left,
    .builder-header-right {
        flex-wrap: wrap;
    }
    
    .builder-title-input {
        min-width: 100%;
        order: -1;
    }
    
    .block-palette-grid {
        grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
    }
    
    .settings-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        flex-direction: column;
    }
    
    .template-grid {
        grid-template-columns: 1fr;
    }
}