/* Roadmaps Page Styles */

.roadmaps-page {
    padding: 2rem 0;
    min-height: calc(100vh - 80px);
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.page-header h1 {
    font-size: 2rem;
    font-weight: 700;
    margin: 0;
    color: var(--text-primary);
}

.page-header p {
    margin: 0.5rem 0 0 0;
    color: var(--text-secondary);
}

/* Roadmaps Grid */
.roadmaps-section {
    margin-top: 2rem;
}

.roadmaps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
}

.roadmap-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    cursor: pointer;
}

.roadmap-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.roadmap-card-header {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1rem;
}

.roadmap-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.roadmap-card h3 {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.roadmap-card p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin: 0.5rem 0 0 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.roadmap-stats {
    display: flex;
    gap: 1.5rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

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

.roadmap-stat .stat-value {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.roadmap-stat .stat-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
}

.roadmap-progress {
    margin-top: 1rem;
}

.progress-bar {
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--cyan), var(--blue));
    border-radius: 3px;
    transition: width 0.3s ease;
}

/* Add Roadmap Card */
.roadmap-card.add-roadmap {
    border: 2px dashed var(--border-color);
    background: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 200px;
}

.roadmap-card.add-roadmap:hover {
    border-color: var(--cyan);
    background: var(--bg-secondary);
}

.add-roadmap-content {
    text-align: center;
}

.add-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--text-secondary);
    margin: 0 auto 1rem;
}

/* Roadmap Detail Page */
.roadmap-detail-page {
    padding: 2rem 0;
    min-height: calc(100vh - 80px);
}

.back-link {
    color: var(--text-secondary);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    transition: color 0.2s ease;
}

.back-link:hover {
    color: var(--cyan);
}

.roadmap-header {
    margin-bottom: 2rem;
}

.roadmap-header-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
    flex-wrap: wrap;
}

.roadmap-header h1 {
    font-size: 2rem;
    font-weight: 700;
    margin: 0 0 0.5rem 0;
    color: var(--text-primary);
}

.roadmap-header p {
    display: none;
    color: var(--text-secondary);
    margin: 0;
}

.roadmap-description-container {
    margin: 0.5rem 0;
}

.roadmap-description-container .roadmap-description {
    color: var(--text-secondary);
    margin: 0;
    font-size: 0.9rem;
    line-height: 1.5;
}

.roadmap-description-container .read-more-btn {
    display: none;
    background: none;
    border: none;
    color: var(--cyan, #06b6d4);
    cursor: pointer;
    padding: 0;
    font-size: 0.85rem;
    font-weight: 500;
    margin-top: 0.25rem;
}

.roadmap-description-container .read-more-btn:hover {
    text-decoration: underline;
}

.roadmap-actions {
    display: flex;
    gap: 0.5rem;
    flex-shrink: 0;
}

.archived-badge {
    background: rgba(245, 158, 11, 0.15);
    color: #f59e0b;
    padding: 0.25rem 0.75rem;
    border-radius: 16px;
    font-weight: 500;
}

.roadmap-meta {
    display: flex;
    gap: 2rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Roadmap Chart */
.roadmap-chart-section {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    overflow-x: auto;
}

/* SEO Topics Section - hidden visually but accessible to search engine crawlers */
.seo-topics-section {
    position: absolute;
    left: -10000px;
    top: auto;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

/* SEO Roadmaps Section - hidden visually but accessible to search engine crawlers */
.seo-roadmaps-section {
    position: absolute;
    left: -10000px;
    top: auto;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.roadmap-chart {
    position: relative;
    min-height: 400px;
    padding: 2rem 0;
}

/* SVG Connectors */
.tree-connectors {
    position: absolute;
    top: 0;
    left: 0;
    pointer-events: none;
    z-index: 1;
}

.spine-connector {
    stroke: var(--border-color);
    stroke-width: 3;
}

.branch-connector {
    stroke: var(--border-color);
    stroke-width: 2;
}

.leaf-connector {
    stroke: var(--border-color);
    stroke-width: 1.5;
}

/* Tree Container */
.tree-container {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* Spine Row - contains left branches, spine node, right branches */
.spine-row {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 2rem;
    align-items: start;
    min-height: 120px;
}

/* Branch columns */
.branch-column {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.branch-column.left {
    align-items: flex-end;
}

.branch-column.right {
    align-items: flex-start;
}

/* Spine column (center) */
.spine-column {
    display: flex;
    justify-content: center;
    min-width: 200px;
}

/* Spine Node - main milestone on the vertical path */
.spine-node {
    position: relative;
    background: var(--bg-secondary);
    border: 3px solid var(--border-color);
    border-radius: 12px;
    padding: 1rem 1.5rem;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
    min-width: 180px;
    max-width: 250px;
    position: relative;
}

.spine-node:hover {
    border-color: var(--cyan);
    transform: scale(1.03);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.spine-node.selected {
    border-color: var(--cyan);
    box-shadow: 0 0 0 4px rgba(6, 182, 212, 0.2);
}

.spine-node.filled {
    border-color: var(--green);
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1) 0%, var(--bg-secondary) 100%);
}

.spine-node.empty {
    border-style: dashed;
}

.spine-node .node-title {
    font-weight: 700;
    font-size: 1rem;
    color: var(--text-primary);
}

.spine-node .node-desc {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
}

.spine-node .node-status-icon {
    position: absolute;
    top: -8px;
    right: -8px;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--bg-tertiary);
    border: 2px solid var(--card-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.spine-node .node-status-icon.filled {
    background: var(--green);
    color: white;
}

/* Branch Node - topics that branch off the spine */
.branch-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.branch-column.left .branch-group {
    align-items: flex-end;
}

.branch-column.right .branch-group {
    align-items: flex-start;
}

.branch-node {
    position: relative;
    background: #fef3c7;
    border: 2px solid #f59e0b;
    border-radius: 8px;
    padding: 0.6rem 1rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    min-width: 140px;
    max-width: 220px;
}

[data-theme="dark"] .branch-node {
    background: rgba(245, 158, 11, 0.15);
    border-color: #f59e0b;
}

.branch-node:hover {
    transform: scale(1.02);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.branch-node.selected {
    box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.3);
}

.branch-node.filled {
    border-color: var(--green);
    background: rgba(16, 185, 129, 0.15);
}

.branch-node.empty {
    border-style: dashed;
}

.branch-node .node-title {
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--text-primary);
    flex: 1;
}

.branch-node .node-status-icon {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.65rem;
    color: var(--text-secondary);
    flex-shrink: 0;
}

.branch-node .node-status-icon.filled {
    background: var(--green);
    color: white;
}

/* Leaf Container - holds leaf nodes under a branch */
.leaf-container {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-top: 0.25rem;
}

.branch-column.left .leaf-container {
    justify-content: flex-end;
}

.branch-column.right .leaf-container {
    justify-content: flex-start;
}

/* Leaf Node - specific items/options under a branch */
.leaf-node {
    position: relative;
    background: var(--bg-secondary);
    border: 1.5px solid var(--border-color);
    border-radius: 6px;
    padding: 0.4rem 0.75rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.8rem;
}

.leaf-node:hover {
    border-color: var(--cyan);
    background: var(--bg-tertiary);
}

.leaf-node.selected {
    border-color: var(--cyan);
    box-shadow: 0 0 0 2px rgba(6, 182, 212, 0.2);
}

.leaf-node.filled {
    border-color: var(--green);
    background: rgba(16, 185, 129, 0.08);
}

.leaf-node.empty {
    border-style: dashed;
}

.leaf-node .node-title {
    font-weight: 500;
    font-size: 0.75rem;
    color: var(--text-primary);
}

.leaf-node .node-status-icon {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.55rem;
    color: var(--text-secondary);
    flex-shrink: 0;
}

.leaf-node .node-status-icon.filled {
    background: var(--green);
    color: white;
}

/* General node styles */
.node-desc {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Node Details Panel */
.node-details-panel {
    position: fixed;
    right: 0;
    top: 80px;
    width: 400px;
    max-width: 100%;
    height: calc(100vh - 80px);
    background-color: #1e293b;
    border-left: 1px solid var(--border-color);
    box-shadow: -4px 0 24px rgba(0, 0, 0, 0.1);
    z-index: 100;
    overflow-y: auto;
}

[data-theme="light"] .node-details-panel {
    background-color: #ffffff;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    background-color: #1e293b;
}

[data-theme="light"] .panel-header {
    background-color: #ffffff;
}

.panel-header h3 {
    margin: 0;
    font-size: 1.25rem;
}

.panel-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem;
    line-height: 1;
}

.panel-close:hover {
    color: var(--text-primary);
}

.panel-body {
    padding: 1.5rem;
}

.node-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin: 1.5rem 0;
}

.node-stat-card {
    background: var(--bg-secondary);
    border-radius: 8px;
    padding: 1rem;
    text-align: center;
}

.node-stat-card .value {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.node-stat-card .label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
}

.node-actions {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.node-edit-actions {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
}

.modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    background-color: #1e293b !important;
    border: 1px solid var(--border-color);
    border-radius: 16px;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.4);
}

[data-theme="light"] .modal-content {
    background-color: #ffffff !important;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    background-color: #1e293b;
}

[data-theme="light"] .modal-header {
    background-color: #ffffff;
}

.modal-body {
    padding: 1.5rem;
    background-color: #1e293b;
}

[data-theme="light"] .modal-body {
    background-color: #ffffff;
}

.modal-header h2 {
    margin: 0;
    font-size: 1.25rem;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem;
    line-height: 1;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 1rem;
    transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--cyan);
}

.form-group select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 1rem;
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%239ca3af' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14 2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    margin-top: 1.5rem;
}

/* Buttons */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: linear-gradient(135deg, var(--cyan) 0%, var(--blue) 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(6, 182, 212, 0.3);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn-secondary {
    padding: 0.75rem 1.5rem;
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s ease;
}

.btn-secondary:hover {
    background: var(--bg-tertiary);
}

.btn-secondary.btn-danger {
    border-color: #ef4444;
    color: #ef4444;
}

.btn-secondary.btn-danger:hover {
    background: rgba(239, 68, 68, 0.1);
}

.btn-secondary.btn-warning {
    border-color: #f59e0b;
    color: #f59e0b;
}

.btn-secondary.btn-warning:hover {
    background: rgba(245, 158, 11, 0.1);
}

.btn-icon-small {
    width: 36px;
    height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 1rem;
}

.btn-icon-small:hover {
    background: var(--bg-tertiary);
    border-color: var(--cyan);
}

.btn-icon-small.btn-danger:hover {
    border-color: #ef4444;
    background: rgba(239, 68, 68, 0.1);
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    cursor: pointer;
}

.btn-small:hover {
    background: var(--border-color);
}

/* Outline Preview */
.outline-preview {
    border-top: 1px solid var(--border-color);
    padding: 1.5rem;
}

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

.outline-header h3 {
    margin: 0;
    font-size: 1rem;
}

.outline-nodes {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    max-height: 300px;
    overflow-y: auto;
}

.outline-node {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.75rem;
    background: var(--bg-secondary);
    border-radius: 8px;
}

.outline-node-number {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
    flex-shrink: 0;
}

.outline-node-content h4 {
    margin: 0;
    font-size: 0.875rem;
    font-weight: 600;
}

.outline-node-content p {
    margin: 0.25rem 0 0 0;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Generating Progress */
.generating-progress {
    text-align: center;
    padding: 2rem;
}

.progress-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--border-color);
    border-top-color: var(--cyan);
    border-radius: 50%;
    margin: 0 auto 1rem;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.progress-hint {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Loading Spinner */
.loading-spinner {
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
}

/* Responsive */
@media (max-width: 768px) {
    .page-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .roadmaps-grid {
        grid-template-columns: 1fr;
    }

    .node-details-panel {
        width: 100%;
        left: 0;
    }

    .roadmap-chart-section {
        padding: 1rem;
        overflow-x: hidden;
    }

    /* Mobile tree layout - convert to vertical list */
    .spine-row {
        display: flex;
        flex-direction: column;
        gap: 0.75rem;
        min-height: auto;
    }

    .spine-column {
        min-width: auto;
        width: 100%;
    }

    .spine-node {
        min-width: auto;
        max-width: 100%;
        width: 100%;
    }

    .branch-column {
        width: 100%;
    }

    .branch-column.left,
    .branch-column.right {
        align-items: stretch;
    }

    .branch-column.left .branch-group,
    .branch-column.right .branch-group {
        align-items: stretch;
    }

    .branch-node {
        min-width: auto;
        max-width: 100%;
        width: 100%;
    }

    .branch-column.left .leaf-container,
    .branch-column.right .leaf-container {
        justify-content: flex-start;
    }

    .leaf-node {
        flex: 1;
        min-width: auto;
    }

    /* Roadmap header mobile */
    .roadmap-header h1 {
        font-size: 1.5rem;
    }

    .roadmap-header-top {
        flex-direction: column;
    }

    .roadmap-actions {
        width: 100%;
        justify-content: flex-start;
    }

    .roadmap-meta {
        gap: 1rem;
    }
}

/* Node Editor Page Styles */
.node-editor-page {
    padding-block: 2rem;
}

.node-editor-page .editor-header {
    margin-block-end: 2rem;
}

.node-editor-page .editor-header h1 {
    font-size: 1.75rem;
    margin-block-end: 0.5rem;
}

.node-editor-page .editor-header .subtitle {
    color: var(--text-secondary);
}

.node-editor-page .lesson-name-input {
    font-size: 1.125rem;
    font-weight: 600;
    background: transparent;
    border: 1px solid transparent;
    border-radius: 6px;
    padding: 0.25rem 0.5rem;
    color: var(--text-primary);
    width: 100%;
}

.node-editor-page .lesson-name-input:hover,
.node-editor-page .lesson-name-input:focus {
    border-color: var(--border-color);
    background: var(--bg-primary);
}

/* Node Editor textarea styling for dark theme */
.node-editor-page textarea {
    width: 100%;
    padding: 0.75rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 16px;
    line-height: 1.5;
    resize: vertical;
    transition: all 0.3s ease;
}

.node-editor-page textarea:focus {
    outline: none;
    border-color: var(--cyan);
    box-shadow: 0 0 0 3px oklch(0.9 0.15 195 / 0.1);
}

.node-editor-page textarea::placeholder {
    color: var(--text-tertiary);
}

.node-editor-page .lesson-description-input {
    min-height: 60px;
}

.node-editor-page .lesson-content-section {
    margin-top: 1rem;
}

.node-editor-page .lesson-content-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.5rem;
}

.node-editor-page .lesson-content-input {
    min-height: 120px;
    font-family: 'SF Mono', Monaco, 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.5;
}

.node-editor-page .question-content {
    display: grid;
    grid-template-columns: 2fr auto 1fr;
    gap: 1rem;
    align-items: start;
}

.node-editor-page .question-side {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.node-editor-page .question-side label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.node-editor-page .question-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-tertiary);
    font-size: 1.5rem;
    padding-top: 1.5rem;
}

.node-editor-page .question-explanation {
    margin-top: 1rem;
}

.node-editor-page .question-explanation label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.5rem;
}

/* Node Progress Badge - shows X/Y progress on each node */
.node-progress-badge {
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    padding: 0.15rem 0.5rem;
    border-radius: 10px;
    font-size: 0.65rem;
    font-weight: 600;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    white-space: nowrap;
    z-index: 10;
}

.node-progress-badge.complete {
    background: var(--green);
    border-color: var(--green);
    color: white;
}

.node-progress-badge.partial {
    background: #f59e0b;
    border-color: #f59e0b;
    color: white;
}

.node-progress-badge.started {
    background: #5a7a8a;
    border-color: #6b8a9a;
    color: white;
}

.node-progress-badge.empty {
    background: #4a5568;
    border-color: #718096;
    color: #e2e8f0;
}

/* Adjustments for branch and leaf nodes */
.branch-node .node-progress-badge,
.leaf-node .node-progress-badge {
    bottom: -6px;
    font-size: 0.6rem;
    padding: 0.1rem 0.4rem;
}