/* =========================================
   Knowledge: reader, workspace, Markdown editor,
   attachments and activity views
   ========================================= */

/* =========
   Knowledge base
   ========= */

.knowledge-page,
.knowledge-detail-page {
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.knowledge-hero,
.knowledge-detail-hero {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 22px;
    background:
        radial-gradient(circle at top right, rgba(217, 41, 47, 0.08), transparent 28%),
        linear-gradient(135deg, var(--bg-surface) 0%, var(--bg-surface-soft) 100%);
}

.knowledge-hero__content {
    max-width: 880px;
}

.knowledge-hero h2,
.knowledge-detail-hero h2 {
    margin-bottom: 12px;
    font-size: clamp(1.85rem, 2.25vw, 2.65rem);
}

.knowledge-summary-bar,
.knowledge-detail-stats {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 10px;
    min-width: min(100%, 320px);
}

.knowledge-detail-stats span {
    display: inline-flex;
    padding: 9px 12px;
    border-radius: 999px;
    background: var(--bg-surface);
    border: 1px solid var(--border-soft);
    color: var(--text-muted);
    font-size: 13px;
    font-weight: 700;
}

.knowledge-filter-grid {
    grid-template-columns: minmax(280px, 1fr) minmax(220px, 0.35fr) auto;
}

.knowledge-filter-actions {
    display: flex;
    gap: 10px;
    align-items: end;
}

.knowledge-layout,
.knowledge-detail-layout {
    display: grid;
    grid-template-columns: minmax(240px, 0.28fr) minmax(0, 1fr);
    gap: 20px;
    align-items: start;
}

.knowledge-detail-layout {
    grid-template-columns: minmax(0, 1fr) minmax(260px, 0.32fr);
}

.knowledge-sidebar {
    position: sticky;
    top: 24px;
    display: flex;
    flex-direction: column;
    gap: 22px;
}

.knowledge-sidebar__section h3,
.knowledge-aside-panel h3 {
    margin-bottom: 12px;
    font-size: 16px;
}

.knowledge-space-list,
.knowledge-category-list,
.knowledge-attachment-list,
.knowledge-related-list {
    display: grid;
    gap: 8px;
}

.knowledge-space-link,
.knowledge-category-link,
.knowledge-attachment {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
    padding: 10px 12px;
    border: 1px solid var(--border-soft);
    border-radius: 12px;
    background: var(--bg-surface-soft);
    color: var(--text-main);
    transition: background 0.18s ease, border-color 0.18s ease, transform 0.18s ease;
}

.knowledge-space-link:hover,
.knowledge-category-link:hover,
.knowledge-attachment:hover,
.knowledge-featured-card:hover,
.knowledge-article-row:hover {
    transform: translateY(-1px);
    border-color: var(--border-accent);
    background: var(--brand-red-soft);
}

.knowledge-space-link.active,
.knowledge-category-link.active {
    border-color: var(--border-accent);
    background: var(--brand-red-soft);
    color: var(--brand-red);
}

.knowledge-space-link__mark,
.knowledge-article-row__mark {
    width: 34px;
    height: 34px;
    min-width: 34px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    background: var(--brand-red);
    color: #fff;
    font-size: 12px;
    font-weight: 900;
    letter-spacing: 0;
}

.knowledge-space-link span:not(.knowledge-space-link__mark),
.knowledge-category-link span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-weight: 800;
}

.knowledge-space-link em,
.knowledge-category-link em {
    margin-left: auto;
    color: var(--text-soft);
    font-style: normal;
    font-size: 13px;
    font-weight: 800;
}

.knowledge-section {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin-bottom: 20px;
}

.knowledge-featured-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.knowledge-featured-card,
.knowledge-article-row {
    background: var(--bg-surface);
    border: 1px solid var(--border-soft);
    box-shadow: var(--shadow-soft);
    transition: background 0.18s ease, border-color 0.18s ease, transform 0.18s ease;
}

.knowledge-featured-card {
    border-radius: var(--radius-lg);
    padding: 18px;
}

.knowledge-featured-card h4,
.knowledge-article-row h4 {
    margin-bottom: 8px;
    font-size: 18px;
}

.knowledge-featured-card p,
.knowledge-article-row p {
    margin-bottom: 14px;
}

.knowledge-card__meta,
.knowledge-card__footer {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
    color: var(--text-soft);
    font-size: 12px;
    font-weight: 800;
}

.knowledge-card__meta span,
.knowledge-card__footer span {
    padding: 5px 8px;
    border-radius: 999px;
    background: var(--neutral-bg);
    color: var(--neutral-text);
}

.knowledge-card__footer {
    justify-content: space-between;
    margin-bottom: 0;
}

.knowledge-article-list {
    display: grid;
    gap: 12px;
}

.knowledge-article-row {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: 14px;
    align-items: start;
    border-radius: var(--radius-lg);
    padding: 16px;
}

.knowledge-article-row__main {
    min-width: 0;
}

.knowledge-article-row__side {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 10px;
    min-width: 150px;
}

.knowledge-article-row__side span,
.knowledge-muted {
    color: var(--text-muted);
    font-size: 13px;
}

.knowledge-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.knowledge-tag {
    display: inline-flex;
    align-items: center;
    min-height: 28px;
    padding: 0 10px;
    border-radius: 999px;
    background: var(--bg-surface-soft);
    border: 1px solid var(--border-soft);
    color: var(--text-muted);
    font-size: 12px;
    font-weight: 800;
}

.knowledge-tag:hover {
    background: var(--brand-red-soft);
    border-color: var(--border-accent);
    color: var(--brand-red);
}

.knowledge-breadcrumbs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    color: var(--text-muted);
    font-size: 14px;
    font-weight: 700;
}

.knowledge-breadcrumbs a:hover {
    color: var(--brand-red);
}

.knowledge-article-content {
    max-width: 940px;
}

.knowledge-article-content h1,
.knowledge-article-content h2,
.knowledge-article-content h3,
.knowledge-article-content h4 {
    margin-top: 1.35em;
}

.knowledge-article-content h1:first-child,
.knowledge-article-content h2:first-child,
.knowledge-article-content h3:first-child {
    margin-top: 0;
}

.knowledge-article-content p,
.knowledge-article-content li {
    color: var(--text-main);
}

.knowledge-article-content a {
    color: var(--brand-red);
    font-weight: 700;
}


.knowledge-article-content img {
    display: block;
    max-width: 100%;
    height: auto;
    margin: 18px 0;
    border-radius: 16px;
    border: 1px solid var(--border-soft);
    box-shadow: var(--shadow-soft);
}

.knowledge-article-content blockquote {
    margin: 18px 0;
    padding: 14px 16px;
    border-left: 4px solid var(--brand-red);
    border-radius: 0 12px 12px 0;
    background: var(--brand-red-soft);
    color: var(--text-main);
}

.knowledge-article-content pre {
    overflow-x: auto;
    padding: 16px;
    border-radius: 14px;
    background: var(--bg-surface-soft);
    border: 1px solid var(--border-soft);
}

.knowledge-article-content code {
    padding: 2px 5px;
    border-radius: 6px;
    background: var(--neutral-bg);
    color: var(--neutral-text);
    font-size: 0.92em;
}

.knowledge-article-content pre code {
    padding: 0;
    background: transparent;
}

.knowledge-article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 18px 0;
    overflow: hidden;
    border-radius: 12px;
}

.knowledge-article-content th,
.knowledge-article-content td {
    padding: 11px 12px;
    border: 1px solid var(--border-soft);
    text-align: left;
}

.knowledge-article-content th {
    background: var(--bg-surface-soft);
}

.knowledge-detail-aside {
    display: grid;
    gap: 14px;
    position: sticky;
    top: 24px;
}

.knowledge-attachment {
    display: grid;
    align-items: start;
}

.knowledge-attachment strong {
    color: var(--text-main);
}

.knowledge-attachment span {
    color: var(--text-muted);
    font-size: 13px;
}

@media (max-width: 1100px) {
    .knowledge-layout,
    .knowledge-detail-layout {
        grid-template-columns: 1fr;
    }

    .knowledge-sidebar,
    .knowledge-detail-aside {
        position: static;
    }
}

@media (max-width: 760px) {
    .knowledge-hero,
    .knowledge-detail-hero {
        align-items: flex-start;
        flex-direction: column;
    }

    .knowledge-summary-bar,
    .knowledge-detail-stats {
        justify-content: flex-start;
    }

    .knowledge-filter-grid,
    .knowledge-featured-grid,
    .knowledge-article-row {
        grid-template-columns: 1fr;
    }

    .knowledge-article-row__side {
        align-items: flex-start;
        min-width: 0;
    }
}


/* =========
   Knowledge workspace/editor
   ========= */

.knowledge-workspace,
.knowledge-editor-page {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.knowledge-workspace-hero,
.knowledge-editor-hero {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 20px;
    background:
        radial-gradient(circle at top right, rgba(217, 41, 47, 0.08), transparent 30%),
        linear-gradient(135deg, var(--bg-surface) 0%, var(--bg-surface-soft) 100%);
}

.knowledge-workspace-hero h2,
.knowledge-editor-hero h2 {
    margin-bottom: 10px;
    font-size: clamp(1.65rem, 2vw, 2.25rem);
}

.knowledge-editor-hero h2 input {
    min-width: min(760px, 100%);
    font-size: clamp(1.45rem, 1.8vw, 2rem);
    font-weight: 800;
    border-radius: 14px;
}

.knowledge-workspace-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: flex-end;
}

.knowledge-workspace-stats,
.knowledge-editor-meta-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
}

.knowledge-editor-meta-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.knowledge-manage-filter-grid {
    grid-template-columns: minmax(280px, 1fr) minmax(180px, 0.25fr) minmax(220px, 0.32fr) auto;
}

.knowledge-workspace-layout,
.knowledge-editor-layout {
    display: grid;
    grid-template-columns: minmax(260px, 0.28fr) minmax(0, 1fr);
    gap: 20px;
    align-items: start;
}

.knowledge-editor-layout {
    grid-template-columns: minmax(0, 1fr) minmax(300px, 0.32fr);
}

.knowledge-workspace-tree,
.knowledge-editor-side {
    position: sticky;
    top: 24px;
}

.knowledge-workspace-tree h3,
.knowledge-template-box h4,
.knowledge-editor-panel h3 {
    font-size: 16px;
    margin-bottom: 12px;
}

.knowledge-template-box {
    margin-top: 20px;
    padding-top: 18px;
    border-top: 1px solid var(--border-soft);
    display: grid;
    gap: 8px;
}

.knowledge-template-box a {
    display: flex;
    align-items: center;
    min-height: 36px;
    padding: 8px 10px;
    border-radius: 10px;
    background: var(--bg-surface-soft);
    border: 1px solid var(--border-soft);
    color: var(--text-main);
    font-weight: 800;
    font-size: 13px;
}

.knowledge-template-box a:hover {
    background: var(--brand-red-soft);
    border-color: var(--border-accent);
    color: var(--brand-red);
}

.knowledge-workspace-list {
    display: grid;
    gap: 12px;
}

.knowledge-manage-row {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: 14px;
    align-items: flex-start;
    padding: 16px;
    border-radius: var(--radius-lg);
    background: var(--bg-surface);
    border: 1px solid var(--border-soft);
    box-shadow: var(--shadow-soft);
}

.knowledge-manage-row:hover {
    border-color: var(--border-accent);
    box-shadow: var(--shadow-hover);
}

.knowledge-manage-row h3 {
    margin-bottom: 8px;
    font-size: 18px;
}

.knowledge-manage-row__main {
    min-width: 0;
}

.knowledge-manage-row__actions {
    display: flex;
    flex-direction: column;
    gap: 8px;
    min-width: 150px;
}

.knowledge-editor-form {
    display: contents;
}

.knowledge-editor-main {
    padding: 0;
    overflow: hidden;
}

.knowledge-editor-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    padding: 12px;
    border-bottom: 1px solid var(--border-soft);
    background: var(--bg-surface-soft);
}

.editor-btn {
    min-height: 34px;
    padding: 0 10px;
    border-radius: 9px;
    border: 1px solid var(--border-soft);
    background: var(--bg-surface);
    color: var(--text-main);
    font-size: 13px;
    font-weight: 800;
    cursor: pointer;
}

.editor-btn:hover {
    background: var(--brand-red-soft);
    color: var(--brand-red);
    border-color: var(--border-accent);
}

.knowledge-editor__textarea {
    min-height: 680px;
    border: 0 !important;
    border-radius: 0 !important;
    resize: vertical;
    font-family: "Cascadia Code", "JetBrains Mono", Consolas, monospace;
    line-height: 1.6;
    background: var(--bg-surface) !important;
}

.knowledge-editor-side {
    display: grid;
    gap: 14px;
}

.knowledge-editor-panel {
    display: grid;
    gap: 12px;
}

.knowledge-checkbox-row {
    display: flex;
    align-items: center;
    gap: 9px;
    color: var(--text-main);
    font-weight: 700;
}

.knowledge-checkbox-grid ul,
.knowledge-checkbox-grid--courses ul {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 8px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.knowledge-checkbox-grid label {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    padding: 9px 10px;
    border-radius: 10px;
    background: var(--bg-surface-soft);
    border: 1px solid var(--border-soft);
    color: var(--text-main);
    font-size: 13px;
    font-weight: 700;
}

.knowledge-editor-preview,
.knowledge-editor-attachments {
    max-width: var(--container-max);
}

.knowledge-preview-box {
    min-height: 220px;
    max-width: none;
    padding-top: 0;
    border: 0;
    box-shadow: none;
}

.knowledge-attachment-grid {
    grid-template-columns: minmax(160px, 0.3fr) minmax(220px, 0.35fr) minmax(240px, 1fr) auto auto;
}

.knowledge-attachment-list--editor {
    margin-top: 16px;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.knowledge-editor-link-row {
    margin-top: 14px;
}

.kb-callout {
    margin: 18px 0;
    padding: 14px 16px;
    border-radius: 14px;
    border: 1px solid var(--border-soft);
    background: var(--bg-surface-soft);
}

.kb-callout strong {
    display: block;
    margin-bottom: 8px;
    color: var(--text-main);
}

.kb-callout--warning,
.kb-callout--danger {
    border-color: rgba(217, 41, 47, 0.26);
    background: var(--brand-red-soft);
}

.kb-callout--info {
    border-color: rgba(37, 99, 235, 0.22);
    background: var(--info-bg);
}

.kb-callout--success,
.kb-callout--checklist {
    border-color: rgba(22, 101, 52, 0.18);
    background: var(--success-bg);
}

@media (max-width: 1180px) {
    .knowledge-workspace-layout,
    .knowledge-editor-layout {
        grid-template-columns: 1fr;
    }

    .knowledge-workspace-tree,
    .knowledge-editor-side {
        position: static;
    }
}

@media (max-width: 860px) {
    .knowledge-workspace-hero,
    .knowledge-editor-hero,
    .knowledge-manage-row {
        grid-template-columns: 1fr;
        flex-direction: column;
        align-items: flex-start;
    }

    .knowledge-workspace-stats,
    .knowledge-editor-meta-grid,
    .knowledge-manage-filter-grid,
    .knowledge-attachment-grid {
        grid-template-columns: 1fr;
    }

    .knowledge-workspace-actions,
    .knowledge-manage-row__actions {
        width: 100%;
        align-items: stretch;
    }
}


/* Knowledge editor polish */
.knowledge-editor-hero--compact {
    align-items: center;
    padding: 20px;
}

.knowledge-editor-title-block {
    width: min(860px, 100%);
    display: grid;
    gap: 8px;
}

.knowledge-editor-title-label {
    color: var(--text-soft);
    font-size: 12px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.knowledge-editor-title-block input {
    min-height: 58px;
    padding: 10px 16px;
    font-size: clamp(1.35rem, 1.8vw, 2rem);
    font-weight: 900;
    border-radius: 14px;
}

.knowledge-editor-actions .btn {
    min-width: 112px;
}

.knowledge-editor-layout--modern {
    grid-template-columns: minmax(0, 1fr) minmax(340px, 380px);
}

.knowledge-editor-main-area {
    display: grid;
    gap: 16px;
    min-width: 0;
}

.knowledge-editor-writing-grid {
    display: grid;
    grid-template-columns: minmax(420px, 0.9fr) minmax(460px, 1.1fr);
    gap: 16px;
    align-items: stretch;
}

.knowledge-editor-writing-grid .knowledge-editor-main,
.knowledge-editor-writing-grid .knowledge-editor-preview {
    min-height: 620px;
}

.knowledge-editor-toolbar {
    position: sticky;
    top: 0;
    z-index: 2;
}

.knowledge-editor__textarea {
    min-height: 520px;
    height: 620px;
    max-height: 72vh;
    font-size: 14px;
}

.knowledge-editor-preview {
    display: flex;
    flex-direction: column;
    overflow: hidden;
    max-width: none;
    padding: 0;
}

.knowledge-editor-preview__header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    padding: 16px 18px;
    border-bottom: 1px solid var(--border-soft);
    background: var(--bg-surface-soft);
}

.knowledge-editor-preview__header h3 {
    margin-bottom: 4px;
    font-size: 16px;
}

.knowledge-editor-preview__header p {
    margin: 0;
    font-size: 13px;
}

.knowledge-editor-preview__badge {
    display: inline-flex;
    min-height: 28px;
    align-items: center;
    padding: 0 10px;
    border-radius: 999px;
    background: var(--success-bg);
    color: var(--success-text);
    font-size: 12px;
    font-weight: 900;
}

.knowledge-preview-box {
    flex: 1;
    min-height: 0;
    overflow: auto;
    padding: 18px;
}

.knowledge-editor-writing-grid--fullscreen {
    position: fixed;
    z-index: 2000;
    inset: 12px;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) !important;
    padding: 12px;
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-lg);
    background: var(--bg-main);
    box-shadow: var(--shadow-strong);
}

.knowledge-editor-writing-grid--fullscreen .knowledge-editor-main,
.knowledge-editor-writing-grid--fullscreen .knowledge-editor-preview {
    max-height: calc(100vh - 48px);
}

.knowledge-editor-writing-grid--fullscreen .knowledge-editor__textarea {
    min-height: calc(100vh - 154px);
}

.knowledge-editor-side--modern {
    top: 18px;
}

.knowledge-editor-side--modern .knowledge-editor-panel {
    padding: 18px;
}

.knowledge-editor-meta-grid--compact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.knowledge-editor-picklist {
    padding: 0;
    overflow: hidden;
}

.knowledge-editor-picklist summary {
    min-height: 58px;
    padding: 0 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    cursor: pointer;
    list-style: none;
    border-bottom: 1px solid var(--border-soft);
}

.knowledge-editor-picklist summary::-webkit-details-marker {
    display: none;
}

.knowledge-editor-picklist summary span {
    color: var(--text-main);
    font-weight: 900;
}

.knowledge-editor-picklist summary em {
    color: var(--text-muted);
    font-size: 12px;
    font-style: normal;
    font-weight: 800;
}

.knowledge-checkbox-grid--compact {
    max-height: 310px;
    overflow: auto;
    padding: 14px;
}

.knowledge-checkbox-grid--compact ul,
.knowledge-checkbox-grid--courses ul {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.knowledge-checkbox-grid--compact label {
    min-height: 40px;
    align-items: center;
}

.knowledge-attachment-dropzone {
    display: grid;
    grid-template-columns: minmax(260px, 0.42fr) minmax(0, 1fr);
    gap: 16px;
    align-items: stretch;
}

.knowledge-attachment-dropzone__file {
    position: relative;
    display: flex;
    align-items: center;
    gap: 14px;
    min-height: 132px;
    padding: 18px;
    border: 1px dashed var(--border-strong);
    border-radius: var(--radius-lg);
    background: var(--bg-surface-soft);
}

.knowledge-attachment-dropzone__file:hover {
    border-color: var(--border-accent);
    background: var(--brand-red-soft);
}

.knowledge-attachment-dropzone__icon {
    width: 44px;
    height: 44px;
    min-width: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    background: var(--brand-red);
    color: #fff;
    font-size: 24px;
    font-weight: 900;
}

.knowledge-attachment-dropzone__file strong {
    display: block;
    margin-bottom: 4px;
    color: var(--text-main);
}

.knowledge-attachment-dropzone__file p {
    margin: 0;
    font-size: 13px;
}

.knowledge-attachment-dropzone__file input[type="file"] {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
}

.knowledge-attachment-fields {
    display: grid;
    grid-template-columns: minmax(180px, 0.3fr) minmax(260px, 1fr) auto auto;
    gap: 12px;
    align-items: end;
}

.knowledge-attachment-fields textarea {
    min-height: 72px;
}

.knowledge-attachment--editor {
    min-height: 72px;
}

@media (max-width: 1320px) {
    .knowledge-editor-writing-grid {
        grid-template-columns: 1fr;
    }

    .knowledge-editor-writing-grid .knowledge-editor-main,
    .knowledge-editor-writing-grid .knowledge-editor-preview {
        min-height: auto;
    }

    .knowledge-preview-box {
        max-height: 520px;
    }
}

@media (max-width: 980px) {
    .knowledge-editor-layout--modern,
    .knowledge-editor-meta-grid--compact,
    .knowledge-attachment-dropzone,
    .knowledge-attachment-fields {
        grid-template-columns: 1fr;
    }

    .knowledge-editor-hero--compact {
        align-items: flex-start;
    }
}

.knowledge-attachment--image {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 12px;
}

.knowledge-attachment__preview {
    display: block;
    overflow: hidden;
    width: 96px;
    height: 72px;
    border-radius: 14px;
    border: 1px solid var(--border-soft);
    background: var(--bg-surface-soft);
}

.knowledge-attachment__preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.knowledge-attachment__body {
    min-width: 0;
    display: grid;
    gap: 6px;
}

.knowledge-attachment__body > a {
    width: fit-content;
    color: var(--brand-red);
    font-size: 13px;
    font-weight: 800;
}

.knowledge-attachment-markdown {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    margin-top: 4px;
}

.knowledge-attachment-markdown code {
    max-width: 100%;
    overflow: hidden;
    padding: 6px 8px;
    border-radius: 10px;
    background: var(--neutral-bg);
    color: var(--neutral-text);
    text-overflow: ellipsis;
    white-space: nowrap;
}

.btn-sm {
    min-height: 32px;
    padding: 0 12px;
    font-size: 12px;
}

@media (max-width: 620px) {
    .knowledge-attachment--image {
        grid-template-columns: 1fr;
    }

    .knowledge-attachment__preview {
        width: 100%;
        height: 180px;
    }
}

/* Knowledge UX refinement: hub, favorites, colored tags, editor view modes */
.knowledge-start-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) repeat(2, minmax(220px, 0.7fr));
    gap: 14px;
    margin-bottom: 20px;
}

.knowledge-start-card {
    display: grid;
    align-content: start;
    gap: 10px;
    min-height: 148px;
    padding: 18px;
}

.knowledge-start-card h3 {
    margin: 0;
    font-size: 18px;
}

.knowledge-start-card p {
    margin: 0;
    color: var(--text-muted);
}

.knowledge-start-actions,
.knowledge-compact-links {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.knowledge-compact-links {
    display: grid;
}

.knowledge-compact-links a {
    min-width: 0;
    overflow: hidden;
    padding: 9px 10px;
    border: 1px solid var(--border-soft);
    border-radius: 10px;
    background: var(--bg-surface-soft);
    color: var(--text-main);
    font-size: 13px;
    font-weight: 800;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.knowledge-compact-links a:hover {
    border-color: var(--border-accent);
    background: var(--brand-red-soft);
    color: var(--brand-red);
}

.knowledge-detail-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 16px 0 12px;
}

.knowledge-detail-actions form,
.knowledge-article-row__side form {
    margin: 0;
}

.knowledge-favorite-btn {
    width: 34px;
    height: 34px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-soft);
    border-radius: 999px;
    background: var(--bg-surface);
    color: var(--text-soft);
    cursor: pointer;
    font-size: 16px;
    font-weight: 900;
}

.knowledge-favorite-btn:hover,
.knowledge-favorite-btn.is-active,
.knowledge-favorite-action.is-active {
    border-color: rgba(245, 158, 11, 0.42);
    background: rgba(245, 158, 11, 0.14);
    color: #b45309;
}

.knowledge-tag--red { background: rgba(217, 41, 47, 0.1); border-color: rgba(217, 41, 47, 0.2); color: #d9292f; }
.knowledge-tag--blue { background: rgba(37, 99, 235, 0.1); border-color: rgba(37, 99, 235, 0.22); color: #2563eb; }
.knowledge-tag--green { background: rgba(22, 163, 74, 0.11); border-color: rgba(22, 163, 74, 0.22); color: #15803d; }
.knowledge-tag--amber { background: rgba(245, 158, 11, 0.13); border-color: rgba(245, 158, 11, 0.24); color: #b45309; }
.knowledge-tag--violet { background: rgba(124, 58, 237, 0.1); border-color: rgba(124, 58, 237, 0.22); color: #7c3aed; }
.knowledge-tag--cyan { background: rgba(8, 145, 178, 0.1); border-color: rgba(8, 145, 178, 0.22); color: #0891b2; }
.knowledge-tag--slate { background: rgba(100, 116, 139, 0.12); border-color: rgba(100, 116, 139, 0.22); color: #475569; }

body[data-theme="dark"] .knowledge-tag--red { color: #ff6b70; }
body[data-theme="dark"] .knowledge-tag--blue { color: #8bb7ff; }
body[data-theme="dark"] .knowledge-tag--green { color: #7ee0a0; }
body[data-theme="dark"] .knowledge-tag--amber { color: #f8c76d; }
body[data-theme="dark"] .knowledge-tag--violet { color: #b99cff; }
body[data-theme="dark"] .knowledge-tag--cyan { color: #76d7ef; }
body[data-theme="dark"] .knowledge-tag--slate { color: #cbd5e1; }
body[data-theme="dark"] .knowledge-favorite-btn:hover,
body[data-theme="dark"] .knowledge-favorite-btn.is-active,
body[data-theme="dark"] .knowledge-favorite-action.is-active {
    color: #f8c76d;
}

.knowledge-editor-hero--compact {
    align-items: center;
    padding: 18px;
}

.knowledge-editor-title-block {
    min-width: 0;
    width: min(760px, 100%);
}

.knowledge-editor-title-block input {
    width: 100%;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
}

.knowledge-editor-actions {
    align-self: center;
    min-width: min(100%, 450px);
}

.knowledge-editor-modebar {
    display: inline-flex;
    width: fit-content;
    max-width: 100%;
    overflow: hidden;
    padding: 4px;
    border: 1px solid var(--border-soft);
    border-radius: 12px;
    background: var(--bg-surface);
    box-shadow: var(--shadow-soft);
}

.knowledge-editor-mode {
    min-height: 34px;
    padding: 0 12px;
    border: 0;
    border-radius: 9px;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 13px;
    font-weight: 900;
    white-space: nowrap;
}

.knowledge-editor-mode:hover,
.knowledge-editor-mode.is-active {
    background: var(--brand-red-soft);
    color: var(--brand-red);
}

.knowledge-editor-writing-grid {
    grid-template-columns: minmax(420px, 0.9fr) minmax(460px, 1.1fr);
}

.knowledge-editor-writing-grid[data-editor-mode="write"] {
    grid-template-columns: minmax(0, 1fr);
}

.knowledge-editor-writing-grid[data-editor-mode="preview"] {
    grid-template-columns: minmax(0, 1fr);
}

.knowledge-editor-writing-grid[data-editor-mode="write"] .knowledge-editor-preview,
.knowledge-editor-writing-grid[data-editor-mode="preview"] .knowledge-editor-main {
    display: none;
}

.knowledge-editor-writing-grid[data-editor-mode="write"] .knowledge-editor__textarea,
.knowledge-editor-writing-grid[data-editor-mode="preview"] .knowledge-preview-box {
    min-height: 72vh;
}

.knowledge-editor-writing-grid .knowledge-editor-main,
.knowledge-editor-writing-grid .knowledge-editor-preview {
    min-width: 0;
}

.knowledge-editor__textarea {
    width: 100%;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
}

.knowledge-preview-box {
    overflow-wrap: anywhere;
}

@media (max-width: 1180px) {
    .knowledge-start-grid {
        grid-template-columns: 1fr;
    }

    .knowledge-editor-actions {
        align-self: stretch;
        min-width: 0;
    }
}

@media (max-width: 760px) {
    .knowledge-editor-modebar {
        display: grid;
        width: 100%;
    }

    .knowledge-editor-mode {
        width: 100%;
    }
}

@media (max-width: 1320px) {
    .knowledge-editor-writing-grid {
        grid-template-columns: 1fr;
    }

    .knowledge-editor-writing-grid--fullscreen {
        grid-template-columns: 1fr !important;
        overflow: auto;
    }
}


/* Knowledge home v2: personal shelves and compact work hub */
.knowledge-start-grid--hub {
    grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.7fr);
}

.knowledge-start-card__eyebrow {
    color: var(--brand-red);
    font-size: 12px;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.knowledge-favorites-shelf {
    margin-bottom: 20px;
    padding: 18px;
}

.knowledge-favorite-rail {
    display: grid;
    grid-template-columns: repeat(4, minmax(180px, 1fr));
    gap: 10px;
}

.knowledge-favorite-card {
    min-width: 0;
    min-height: 92px;
    display: grid;
    align-content: start;
    gap: 8px;
    padding: 14px;
    border: 1px solid var(--border-soft);
    border-radius: 14px;
    background: var(--bg-surface-soft);
    color: var(--text-main);
    transition: background 0.18s ease, border-color 0.18s ease, transform 0.18s ease;
}

.knowledge-favorite-card:hover {
    transform: translateY(-1px);
    border-color: rgba(245, 158, 11, 0.38);
    background: rgba(245, 158, 11, 0.1);
}

.knowledge-favorite-card span {
    overflow: hidden;
    color: var(--text-muted);
    font-size: 12px;
    font-weight: 800;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.knowledge-favorite-card strong {
    display: -webkit-box;
    overflow: hidden;
    color: var(--text-main);
    font-size: 14px;
    line-height: 1.35;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
}

.knowledge-empty-inline {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 14px;
    align-items: center;
    padding: 14px 16px;
    border: 1px dashed var(--border-soft);
    border-radius: 14px;
    background: var(--bg-surface-soft);
    color: var(--text-muted);
}

.knowledge-empty-inline strong {
    color: var(--text-main);
}

.knowledge-section-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: flex-end;
}

.knowledge-picklist-tools {
    padding: 12px 14px 0;
}

.knowledge-picklist-search {
    width: 100%;
    min-height: 38px;
    padding: 0 12px;
    border: 1px solid var(--border-soft);
    border-radius: 10px;
    background: var(--bg-surface-soft);
    color: var(--text-main);
    font: inherit;
}

.knowledge-editor-picklist--courses .knowledge-checkbox-grid--compact {
    max-height: 236px;
    padding-top: 10px;
}

.knowledge-editor-picklist--courses .knowledge-checkbox-grid--courses ul {
    grid-template-columns: 1fr;
}

.knowledge-editor-picklist--courses .knowledge-checkbox-grid--courses li {
    min-width: 0;
}

.knowledge-editor-picklist--courses .knowledge-checkbox-grid--courses label {
    min-height: 36px;
    align-items: center;
    padding: 8px 10px;
}

.knowledge-editor-picklist--courses .knowledge-checkbox-grid--courses label input {
    flex: 0 0 auto;
}

.knowledge-editor-picklist--courses .knowledge-checkbox-grid--courses label {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

@media (max-width: 1280px) {
    .knowledge-favorite-rail {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 1180px) {
    .knowledge-start-grid--hub {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 700px) {
    .knowledge-favorite-rail {
        grid-template-columns: 1fr;
    }

    .knowledge-section-actions {
        width: 100%;
        justify-content: stretch;
    }

    .knowledge-section-actions .btn {
        flex: 1 1 auto;
    }
}

/* Knowledge activity pulse */
.knowledge-pulse-panel {
    position: relative;
    display: grid;
    gap: 16px;
    margin-bottom: 22px;
    padding: 20px;
    overflow: hidden;
    border-color: rgba(245, 158, 11, 0.18);
    background:
        linear-gradient(135deg, rgba(255, 255, 255, 0.96), rgba(255, 250, 240, 0.92)),
        radial-gradient(circle at 96% 0, rgba(245, 158, 11, 0.18), transparent 34%),
        var(--bg-surface);
}

.knowledge-pulse-panel::before {
    content: "";
    position: absolute;
    inset: 0 auto 0 0;
    width: 4px;
    background: linear-gradient(180deg, var(--brand-red), #f59e0b);
    opacity: 0.95;
}

.knowledge-pulse-panel__head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 18px;
    padding-left: 2px;
}

.knowledge-pulse-panel__head h3 {
    margin: 4px 0 6px;
    font-size: 21px;
}

.knowledge-pulse-panel__head p {
    max-width: 780px;
    margin: 0;
    color: var(--text-muted);
}

.knowledge-pulse-stats {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 10px;
}

.knowledge-pulse-stat {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 2px 10px;
    min-height: 78px;
    align-content: center;
    padding: 14px 16px;
    overflow: hidden;
    border: 1px solid rgba(148, 163, 184, 0.22);
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.74);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.68);
}

.knowledge-pulse-stat::after {
    content: "";
    position: absolute;
    right: 14px;
    top: 14px;
    width: 9px;
    height: 9px;
    border-radius: 999px;
    background: var(--brand-red);
    box-shadow: 0 0 0 5px rgba(217, 41, 47, 0.08);
}

.knowledge-pulse-stat--updated::after {
    background: #2563eb;
    box-shadow: 0 0 0 5px rgba(37, 99, 235, 0.1);
}

.knowledge-pulse-stat--people::after {
    background: #16a34a;
    box-shadow: 0 0 0 5px rgba(22, 163, 74, 0.1);
}

.knowledge-pulse-stat--review::after {
    background: #f59e0b;
    box-shadow: 0 0 0 5px rgba(245, 158, 11, 0.12);
}

.knowledge-pulse-stat span {
    align-self: end;
    color: var(--text-muted);
    font-size: 12px;
    font-weight: 900;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.knowledge-pulse-stat strong {
    grid-row: span 2;
    align-self: center;
    padding-right: 18px;
    color: var(--brand-dark);
    font-size: 30px;
    line-height: 1;
}

.knowledge-pulse-stat em {
    color: var(--text-main);
    font-size: 13px;
    font-style: normal;
    font-weight: 900;
}

.knowledge-pulse-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.45fr) minmax(310px, 0.7fr);
    gap: 14px;
}

.knowledge-contributor-board,
.knowledge-impact-card {
    display: grid;
    align-content: start;
    gap: 12px;
    min-width: 0;
    min-height: 172px;
    padding: 14px;
    border: 1px solid rgba(148, 163, 184, 0.24);
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.72);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.62);
}

.knowledge-pulse-subhead {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
}

.knowledge-pulse-subhead h4 {
    margin: 0;
    font-size: 16px;
}

.knowledge-pulse-subhead span {
    color: var(--text-soft);
    font-size: 12px;
    font-weight: 800;
    text-align: right;
}

.knowledge-contributor-row {
    position: relative;
    display: grid;
    grid-template-columns: 28px 46px minmax(0, 1fr) auto;
    gap: 12px;
    align-items: center;
    padding: 12px 14px;
    border: 1px solid rgba(217, 41, 47, 0.1);
    border-radius: 16px;
    background:
        linear-gradient(90deg, rgba(217, 41, 47, 0.08), transparent 30%),
        var(--bg-surface);
}

.knowledge-contributor-rank,
.knowledge-contributor-avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
}

.knowledge-contributor-rank {
    color: var(--text-soft);
    font-size: 16px;
}

.knowledge-contributor-avatar {
    width: 46px;
    height: 46px;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--brand-red), #ff7a59);
    color: #fff;
    font-size: 13px;
    box-shadow: 0 10px 22px rgba(217, 41, 47, 0.18);
}

.knowledge-contributor-row strong {
    display: block;
    overflow: hidden;
    color: var(--text-main);
    text-overflow: ellipsis;
    white-space: nowrap;
}

.knowledge-contributor-row b {
    display: grid;
    min-width: 58px;
    padding: 7px 10px;
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.18), rgba(245, 158, 11, 0.08));
    color: #92400e;
    text-align: center;
    line-height: 1.05;
}

.knowledge-contributor-row b span {
    font-size: 15px;
}

.knowledge-contributor-row b small {
    color: rgba(146, 64, 14, 0.72);
    font-size: 10px;
    font-weight: 900;
}

.knowledge-contributor-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 6px;
}

.knowledge-contributor-badges em {
    padding: 4px 8px;
    border-radius: 999px;
    background: rgba(37, 99, 235, 0.08);
    color: #1d4ed8;
    font-size: 11px;
    font-style: normal;
    font-weight: 900;
}

.knowledge-impact-card {
    background:
        linear-gradient(135deg, rgba(255, 255, 255, 0.86), rgba(248, 250, 252, 0.86)),
        var(--bg-surface-soft);
}

.knowledge-impact-card a {
    color: var(--brand-dark);
    font-size: 18px;
    font-weight: 900;
    line-height: 1.3;
}

.knowledge-impact-card a:hover {
    color: var(--brand-red);
}

.knowledge-impact-card p {
    margin: 0;
    color: var(--text-muted);
}

.knowledge-impact-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 2px;
}

.knowledge-impact-meta span {
    padding: 7px 10px;
    border-radius: 999px;
    background: var(--bg-surface);
    border: 1px solid var(--border-soft);
    color: var(--text-muted);
    font-size: 12px;
    font-weight: 900;
}

.knowledge-empty-inline--compact {
    display: grid;
}

body[data-theme="dark"] .knowledge-pulse-panel {
    border-color: rgba(245, 158, 11, 0.2);
    background:
        linear-gradient(135deg, rgba(18, 25, 38, 0.95), rgba(39, 37, 32, 0.9)),
        radial-gradient(circle at 96% 0, rgba(245, 158, 11, 0.12), transparent 34%),
        var(--bg-elevated);
}

body[data-theme="dark"] .knowledge-pulse-stat,
body[data-theme="dark"] .knowledge-contributor-board,
body[data-theme="dark"] .knowledge-impact-card {
    background: rgba(18, 25, 38, 0.72);
    border-color: rgba(51, 65, 85, 0.78);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.03);
}

body[data-theme="dark"] .knowledge-contributor-row {
    border-color: rgba(255, 90, 95, 0.14);
    background:
        linear-gradient(90deg, rgba(255, 90, 95, 0.08), transparent 30%),
        rgba(15, 23, 36, 0.78);
}

body[data-theme="dark"] .knowledge-contributor-row b {
    color: #f8c76d;
    background: rgba(245, 158, 11, 0.14);
}

body[data-theme="dark"] .knowledge-contributor-row b small {
    color: rgba(248, 199, 109, 0.72);
}

body[data-theme="dark"] .knowledge-contributor-badges em {
    background: rgba(96, 165, 250, 0.13);
    color: #bfdbfe;
}

@media (max-width: 1180px) {
    .knowledge-pulse-grid,
    .knowledge-pulse-stats {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 700px) {
    .knowledge-pulse-grid,
    .knowledge-pulse-stats,
    .knowledge-contributor-row {
        grid-template-columns: 1fr;
    }

    .knowledge-pulse-subhead {
        display: grid;
    }

    .knowledge-pulse-subhead span {
        text-align: left;
    }

    .knowledge-contributor-row {
        align-items: start;
    }

    .knowledge-contributor-rank {
        justify-content: flex-start;
    }
}