I’ll build this as a production-ready citation.css module for your RX Theme: global citation tokens, inline citations, reference chips, bibliography cards, medical-source badges, dark mode, print style, responsive behavior, and accessibility states.
My dear friend, place this full code inside:
assets/static/static-css/components/citation.css
/* ==========================================================================
RX Theme - Citation Component
File: assets/static/static-css/components/citation.css
Purpose:
- Inline citation chips
- Evidence/reference badges
- Medical source notes
- References / bibliography blocks
- DOI, PMID, guideline, FDA, WHO, CDC, PubMed source styling
- Print-friendly citation formatting
========================================================================== */
/* ==========================================================================
1. Citation Design Tokens
========================================================================== */
:root {
--rx-citation-font-family: inherit;
--rx-citation-font-size: 0.78em;
--rx-citation-line-height: 1;
--rx-citation-font-weight: 600;
--rx-citation-color: var(--rx-color-primary, #135cc5);
--rx-citation-color-hover: var(--rx-color-primary-hover, #0b3f91);
--rx-citation-color-active: var(--rx-color-primary-active, #082d69);
--rx-citation-bg: color-mix(in srgb, var(--rx-citation-color) 10%, transparent);
--rx-citation-bg-hover: color-mix(in srgb, var(--rx-citation-color) 16%, transparent);
--rx-citation-bg-active: color-mix(in srgb, var(--rx-citation-color) 22%, transparent);
--rx-citation-border-color: color-mix(in srgb, var(--rx-citation-color) 28%, transparent);
--rx-citation-border-color-hover: color-mix(in srgb, var(--rx-citation-color) 45%, transparent);
--rx-citation-radius: 999px;
--rx-citation-padding-block: 0.18em;
--rx-citation-padding-inline: 0.45em;
--rx-citation-gap: 0.25em;
--rx-citation-shadow: none;
--rx-citation-shadow-hover: 0 2px 8px rgb(0 0 0 / 0.08);
--rx-reference-bg: var(--rx-surface, #ffffff);
--rx-reference-color: var(--rx-text, #162033);
--rx-reference-muted-color: var(--rx-text-muted, #667085);
--rx-reference-border-color: var(--rx-border, #e6eaf0);
--rx-reference-radius: var(--rx-radius-md, 12px);
--rx-reference-padding: 1rem;
--rx-reference-gap: 0.75rem;
--rx-evidence-high: #027a48;
--rx-evidence-moderate: #b54708;
--rx-evidence-low: #b42318;
--rx-evidence-review: #175cd3;
--rx-evidence-guideline: #5925dc;
}
/* ==========================================================================
2. Base Inline Citation
Example:
<a class="rx-citation" href="#ref-1">1</a>
<sup><a class="rx-citation" href="#ref-1">1</a></sup>
========================================================================== */
.rx-citation,
.article-content .rx-citation,
.entry-content .rx-citation {
display: inline-flex;
align-items: center;
justify-content: center;
gap: var(--rx-citation-gap);
min-width: 1.55em;
min-height: 1.55em;
padding: var(--rx-citation-padding-block) var(--rx-citation-padding-inline);
border: 1px solid var(--rx-citation-border-color);
border-radius: var(--rx-citation-radius);
background: var(--rx-citation-bg);
color: var(--rx-citation-color);
font-family: var(--rx-citation-font-family);
font-size: var(--rx-citation-font-size);
font-weight: var(--rx-citation-font-weight);
line-height: var(--rx-citation-line-height);
text-decoration: none;
vertical-align: super;
white-space: nowrap;
cursor: pointer;
box-shadow: var(--rx-citation-shadow);
transition:
color 180ms ease,
background-color 180ms ease,
border-color 180ms ease,
box-shadow 180ms ease,
transform 180ms ease;
}
.rx-citation:hover,
.rx-citation:focus-visible {
color: var(--rx-citation-color-hover);
background: var(--rx-citation-bg-hover);
border-color: var(--rx-citation-border-color-hover);
box-shadow: var(--rx-citation-shadow-hover);
text-decoration: none;
transform: translateY(-1px);
}
.rx-citation:active {
color: var(--rx-citation-color-active);
background: var(--rx-citation-bg-active);
transform: translateY(0);
}
.rx-citation:focus-visible {
outline: 3px solid color-mix(in srgb, var(--rx-citation-color) 32%, transparent);
outline-offset: 2px;
}
/* ==========================================================================
3. Citation Inside Sup Tag
========================================================================== */
sup .rx-citation,
.rx-citation-wrapper sup .rx-citation {
vertical-align: baseline;
}
sup:has(.rx-citation) {
line-height: 0;
}
/* ==========================================================================
4. Citation Variants
========================================================================== */
.rx-citation--square {
border-radius: 0.4em;
}
.rx-citation--plain {
min-width: auto;
min-height: auto;
padding: 0;
border: 0;
background: transparent;
box-shadow: none;
}
.rx-citation--plain:hover,
.rx-citation--plain:focus-visible {
background: transparent;
box-shadow: none;
}
.rx-citation--bracket::before {
content: "[";
}
.rx-citation--bracket::after {
content: "]";
}
.rx-citation--doi::before {
content: "DOI:";
font-size: 0.82em;
font-weight: 700;
opacity: 0.75;
}
.rx-citation--pmid::before {
content: "PMID:";
font-size: 0.82em;
font-weight: 700;
opacity: 0.75;
}
.rx-citation--external::after {
content: "↗";
font-size: 0.78em;
line-height: 1;
opacity: 0.8;
}
/* ==========================================================================
5. Citation Group
Example:
<span class="rx-citation-group">
<a class="rx-citation">1</a>
<a class="rx-citation">2</a>
</span>
========================================================================== */
.rx-citation-group {
display: inline-flex;
align-items: center;
gap: 0.2em;
vertical-align: super;
}
.rx-citation-group .rx-citation {
vertical-align: baseline;
}
.rx-citation-group--compact {
gap: 0;
}
.rx-citation-group--compact .rx-citation {
margin-inline-start: -0.15em;
}
.rx-citation-group--compact .rx-citation:first-child {
margin-inline-start: 0;
}
/* ==========================================================================
6. Reference Section Wrapper
Example:
<section class="rx-references" id="references">
========================================================================== */
.rx-references {
margin-block: clamp(2rem, 4vw, 4rem);
padding-block-start: clamp(1.25rem, 3vw, 2rem);
border-block-start: 1px solid var(--rx-reference-border-color);
color: var(--rx-reference-color);
}
.rx-references__header {
display: flex;
align-items: end;
justify-content: space-between;
gap: 1rem;
margin-block-end: 1rem;
}
.rx-references__title {
margin: 0;
color: var(--rx-reference-color);
font-size: clamp(1.35rem, 2.5vw, 2rem);
font-weight: 800;
line-height: 1.2;
letter-spacing: -0.02em;
}
.rx-references__subtitle {
margin: 0.35rem 0 0;
color: var(--rx-reference-muted-color);
font-size: 0.95rem;
line-height: 1.6;
}
.rx-references__list {
display: grid;
gap: var(--rx-reference-gap);
margin: 0;
padding: 0;
list-style: none;
counter-reset: rx-reference-counter;
}
.rx-references__list--numbered {
list-style: none;
}
.rx-references__empty {
padding: 1rem;
border: 1px dashed var(--rx-reference-border-color);
border-radius: var(--rx-reference-radius);
color: var(--rx-reference-muted-color);
background: color-mix(in srgb, var(--rx-reference-bg) 90%, #f6f8fb);
}
/* ==========================================================================
7. Reference Item / Card
========================================================================== */
.rx-reference {
position: relative;
display: grid;
grid-template-columns: auto minmax(0, 1fr);
gap: 0.85rem;
padding: var(--rx-reference-padding);
border: 1px solid var(--rx-reference-border-color);
border-radius: var(--rx-reference-radius);
background: var(--rx-reference-bg);
color: var(--rx-reference-color);
box-shadow: 0 1px 2px rgb(0 0 0 / 0.04);
scroll-margin-block-start: 7rem;
transition:
border-color 180ms ease,
box-shadow 180ms ease,
transform 180ms ease,
background-color 180ms ease;
}
.rx-reference:hover {
border-color: color-mix(in srgb, var(--rx-citation-color) 28%, var(--rx-reference-border-color));
box-shadow: 0 8px 28px rgb(0 0 0 / 0.08);
transform: translateY(-1px);
}
.rx-reference:target {
border-color: var(--rx-citation-color);
background:
linear-gradient(
90deg,
color-mix(in srgb, var(--rx-citation-color) 8%, transparent),
transparent 50%
),
var(--rx-reference-bg);
box-shadow:
0 0 0 3px color-mix(in srgb, var(--rx-citation-color) 18%, transparent),
0 8px 28px rgb(0 0 0 / 0.08);
}
.rx-reference__number {
display: inline-flex;
align-items: center;
justify-content: center;
width: 2.15rem;
height: 2.15rem;
border-radius: 50%;
background: var(--rx-citation-bg);
color: var(--rx-citation-color);
font-size: 0.9rem;
font-weight: 800;
line-height: 1;
flex: 0 0 auto;
}
.rx-reference__body {
min-width: 0;
}
.rx-reference__title {
margin: 0;
color: var(--rx-reference-color);
font-size: 1rem;
font-weight: 750;
line-height: 1.45;
}
.rx-reference__title a {
color: inherit;
text-decoration-color: color-mix(in srgb, currentColor 28%, transparent);
text-underline-offset: 0.2em;
}
.rx-reference__title a:hover,
.rx-reference__title a:focus-visible {
color: var(--rx-citation-color);
text-decoration-color: currentColor;
}
.rx-reference__meta {
display: flex;
flex-wrap: wrap;
gap: 0.35rem 0.65rem;
margin-block-start: 0.45rem;
color: var(--rx-reference-muted-color);
font-size: 0.88rem;
line-height: 1.5;
}
.rx-reference__authors,
.rx-reference__journal,
.rx-reference__year,
.rx-reference__publisher,
.rx-reference__accessed {
display: inline;
}
.rx-reference__abstract,
.rx-reference__note {
margin: 0.65rem 0 0;
color: var(--rx-reference-muted-color);
font-size: 0.94rem;
line-height: 1.65;
}
.rx-reference__actions {
display: flex;
flex-wrap: wrap;
gap: 0.45rem;
margin-block-start: 0.8rem;
}
.rx-reference__link,
.rx-reference__backlink {
display: inline-flex;
align-items: center;
gap: 0.35em;
width: fit-content;
padding: 0.45em 0.7em;
border: 1px solid var(--rx-reference-border-color);
border-radius: 999px;
background: color-mix(in srgb, var(--rx-citation-color) 7%, transparent);
color: var(--rx-citation-color);
font-size: 0.85rem;
font-weight: 700;
line-height: 1;
text-decoration: none;
transition:
background-color 180ms ease,
border-color 180ms ease,
color 180ms ease,
transform 180ms ease;
}
.rx-reference__link:hover,
.rx-reference__backlink:hover,
.rx-reference__link:focus-visible,
.rx-reference__backlink:focus-visible {
background: color-mix(in srgb, var(--rx-citation-color) 13%, transparent);
border-color: color-mix(in srgb, var(--rx-citation-color) 35%, transparent);
color: var(--rx-citation-color-hover);
transform: translateY(-1px);
}
.rx-reference__link:focus-visible,
.rx-reference__backlink:focus-visible {
outline: 3px solid color-mix(in srgb, var(--rx-citation-color) 25%, transparent);
outline-offset: 2px;
}
.rx-reference__link[target="_blank"]::after {
content: "↗";
font-size: 0.8em;
}
/* ==========================================================================
8. Automatic Numbering
========================================================================== */
.rx-references__list--auto .rx-reference {
counter-increment: rx-reference-counter;
}
.rx-references__list--auto .rx-reference__number::before {
content: counter(rx-reference-counter);
}
.rx-references__list--auto .rx-reference__number {
font-size: 0;
}
.rx-references__list--auto .rx-reference__number::before {
font-size: 0.9rem;
}
/* ==========================================================================
9. Evidence Badges
========================================================================== */
.rx-evidence-badge {
display: inline-flex;
align-items: center;
gap: 0.35em;
width: fit-content;
padding: 0.35em 0.65em;
border: 1px solid transparent;
border-radius: 999px;
font-size: 0.76rem;
font-weight: 800;
line-height: 1;
letter-spacing: 0.01em;
text-transform: uppercase;
white-space: nowrap;
}
.rx-evidence-badge::before {
content: "";
width: 0.55em;
height: 0.55em;
border-radius: 50%;
background: currentColor;
}
.rx-evidence-badge--high {
color: var(--rx-evidence-high);
background: color-mix(in srgb, var(--rx-evidence-high) 11%, transparent);
border-color: color-mix(in srgb, var(--rx-evidence-high) 28%, transparent);
}
.rx-evidence-badge--moderate {
color: var(--rx-evidence-moderate);
background: color-mix(in srgb, var(--rx-evidence-moderate) 12%, transparent);
border-color: color-mix(in srgb, var(--rx-evidence-moderate) 30%, transparent);
}
.rx-evidence-badge--low {
color: var(--rx-evidence-low);
background: color-mix(in srgb, var(--rx-evidence-low) 10%, transparent);
border-color: color-mix(in srgb, var(--rx-evidence-low) 28%, transparent);
}
.rx-evidence-badge--review {
color: var(--rx-evidence-review);
background: color-mix(in srgb, var(--rx-evidence-review) 10%, transparent);
border-color: color-mix(in srgb, var(--rx-evidence-review) 28%, transparent);
}
.rx-evidence-badge--guideline {
color: var(--rx-evidence-guideline);
background: color-mix(in srgb, var(--rx-evidence-guideline) 10%, transparent);
border-color: color-mix(in srgb, var(--rx-evidence-guideline) 28%, transparent);
}
/* ==========================================================================
10. Source Type Chips
========================================================================== */
.rx-source-chip {
display: inline-flex;
align-items: center;
gap: 0.35em;
width: fit-content;
padding: 0.35em 0.65em;
border: 1px solid var(--rx-reference-border-color);
border-radius: 999px;
background: color-mix(in srgb, var(--rx-reference-bg) 92%, #f3f6fb);
color: var(--rx-reference-muted-color);
font-size: 0.78rem;
font-weight: 750;
line-height: 1;
white-space: nowrap;
}
.rx-source-chip--pubmed::before {
content: "PM";
}
.rx-source-chip--doi::before {
content: "DOI";
}
.rx-source-chip--fda::before {
content: "FDA";
}
.rx-source-chip--who::before {
content: "WHO";
}
.rx-source-chip--cdc::before {
content: "CDC";
}
.rx-source-chip--guideline::before {
content: "GL";
}
.rx-source-chip--pubmed::before,
.rx-source-chip--doi::before,
.rx-source-chip--fda::before,
.rx-source-chip--who::before,
.rx-source-chip--cdc::before,
.rx-source-chip--guideline::before {
display: inline-flex;
align-items: center;
justify-content: center;
min-width: 1.55em;
height: 1.55em;
padding-inline: 0.28em;
border-radius: 999px;
background: var(--rx-citation-bg);
color: var(--rx-citation-color);
font-size: 0.72em;
font-weight: 900;
}
/* ==========================================================================
11. Citation Tooltip
CSS-only tooltip by data-citation-title
Example:
<a class="rx-citation rx-citation--tooltip" data-citation-title="WHO guideline 2024">1</a>
========================================================================== */
.rx-citation--tooltip {
position: relative;
}
.rx-citation--tooltip::after {
content: attr(data-citation-title);
position: absolute;
inset-block-end: calc(100% + 0.55rem);
inset-inline-start: 50%;
z-index: 30;
width: max-content;
max-width: min(280px, 80vw);
padding: 0.55rem 0.7rem;
border: 1px solid var(--rx-reference-border-color);
border-radius: 0.65rem;
background: var(--rx-reference-color);
color: var(--rx-reference-bg);
font-size: 0.78rem;
font-weight: 600;
line-height: 1.4;
text-align: start;
white-space: normal;
box-shadow: 0 12px 28px rgb(0 0 0 / 0.18);
opacity: 0;
visibility: hidden;
pointer-events: none;
transform: translateX(-50%) translateY(0.25rem);
transition:
opacity 160ms ease,
visibility 160ms ease,
transform 160ms ease;
}
.rx-citation--tooltip::before {
content: "";
position: absolute;
inset-block-end: calc(100% + 0.25rem);
inset-inline-start: 50%;
z-index: 31;
width: 0.6rem;
height: 0.6rem;
background: var(--rx-reference-color);
opacity: 0;
visibility: hidden;
pointer-events: none;
transform: translateX(-50%) rotate(45deg);
transition:
opacity 160ms ease,
visibility 160ms ease;
}
.rx-citation--tooltip:hover::after,
.rx-citation--tooltip:hover::before,
.rx-citation--tooltip:focus-visible::after,
.rx-citation--tooltip:focus-visible::before {
opacity: 1;
visibility: visible;
transform: translateX(-50%) translateY(0);
}
.rx-citation--tooltip:hover::before,
.rx-citation--tooltip:focus-visible::before {
transform: translateX(-50%) rotate(45deg);
}
/* ==========================================================================
12. Medical Article Source Box
========================================================================== */
.rx-source-box {
margin-block: 1.5rem;
padding: 1rem;
border: 1px solid var(--rx-reference-border-color);
border-inline-start: 4px solid var(--rx-citation-color);
border-radius: var(--rx-reference-radius);
background:
linear-gradient(
90deg,
color-mix(in srgb, var(--rx-citation-color) 8%, transparent),
transparent 55%
),
var(--rx-reference-bg);
color: var(--rx-reference-color);
}
.rx-source-box__title {
display: flex;
align-items: center;
gap: 0.5rem;
margin: 0 0 0.45rem;
color: var(--rx-reference-color);
font-size: 1rem;
font-weight: 800;
line-height: 1.3;
}
.rx-source-box__title::before {
content: "✓";
display: inline-flex;
align-items: center;
justify-content: center;
width: 1.45rem;
height: 1.45rem;
border-radius: 50%;
background: var(--rx-citation-bg);
color: var(--rx-citation-color);
font-size: 0.82rem;
font-weight: 900;
}
.rx-source-box__text {
margin: 0;
color: var(--rx-reference-muted-color);
font-size: 0.95rem;
line-height: 1.7;
}
.rx-source-box__links {
display: flex;
flex-wrap: wrap;
gap: 0.45rem;
margin-block-start: 0.85rem;
}
/* ==========================================================================
13. Fact Checked / Reviewed By Component
========================================================================== */
.rx-fact-check {
display: grid;
grid-template-columns: auto minmax(0, 1fr);
gap: 0.75rem;
margin-block: 1.25rem;
padding: 0.9rem 1rem;
border: 1px solid var(--rx-reference-border-color);
border-radius: var(--rx-reference-radius);
background: color-mix(in srgb, var(--rx-reference-bg) 94%, #eef4ff);
}
.rx-fact-check__icon {
display: inline-flex;
align-items: center;
justify-content: center;
width: 2.1rem;
height: 2.1rem;
border-radius: 50%;
background: var(--rx-citation-bg);
color: var(--rx-citation-color);
font-weight: 900;
}
.rx-fact-check__icon::before {
content: "✓";
}
.rx-fact-check__label {
margin: 0;
color: var(--rx-reference-color);
font-size: 0.92rem;
font-weight: 800;
line-height: 1.4;
}
.rx-fact-check__text {
margin: 0.2rem 0 0;
color: var(--rx-reference-muted-color);
font-size: 0.9rem;
line-height: 1.6;
}
/* ==========================================================================
14. Citation Notice / Medical Disclaimer Small Block
========================================================================== */
.rx-citation-notice {
margin-block: 1rem;
padding: 0.85rem 1rem;
border: 1px solid color-mix(in srgb, var(--rx-evidence-moderate) 32%, transparent);
border-radius: var(--rx-reference-radius);
background: color-mix(in srgb, var(--rx-evidence-moderate) 8%, transparent);
color: var(--rx-reference-color);
font-size: 0.92rem;
line-height: 1.65;
}
.rx-citation-notice strong {
color: color-mix(in srgb, var(--rx-evidence-moderate) 85%, #000);
}
/* ==========================================================================
15. Bibliography Compact Mode
========================================================================== */
.rx-references--compact .rx-references__list {
gap: 0.5rem;
}
.rx-references--compact .rx-reference {
padding: 0.75rem;
border-radius: 0.75rem;
}
.rx-references--compact .rx-reference__number {
width: 1.8rem;
height: 1.8rem;
font-size: 0.78rem;
}
.rx-references--compact .rx-reference__title {
font-size: 0.95rem;
}
.rx-references--compact .rx-reference__abstract,
.rx-references--compact .rx-reference__note {
font-size: 0.88rem;
}
/* ==========================================================================
16. Two-column References on Large Screens
========================================================================== */
@media (min-width: 900px) {
.rx-references--columns .rx-references__list {
grid-template-columns: repeat(2, minmax(0, 1fr));
align-items: start;
}
}
/* ==========================================================================
17. Citation Table Support
========================================================================== */
.rx-reference-table {
width: 100%;
border-collapse: collapse;
margin-block: 1.25rem;
border: 1px solid var(--rx-reference-border-color);
border-radius: var(--rx-reference-radius);
overflow: hidden;
background: var(--rx-reference-bg);
font-size: 0.94rem;
}
.rx-reference-table th,
.rx-reference-table td {
padding: 0.75rem;
border-block-end: 1px solid var(--rx-reference-border-color);
text-align: start;
vertical-align: top;
}
.rx-reference-table th {
background: color-mix(in srgb, var(--rx-citation-color) 7%, transparent);
color: var(--rx-reference-color);
font-weight: 800;
}
.rx-reference-table tr:last-child td {
border-block-end: 0;
}
.rx-reference-table a {
color: var(--rx-citation-color);
font-weight: 700;
}
/* ==========================================================================
18. RTL Support
========================================================================== */
[dir="rtl"] .rx-reference,
[dir="rtl"] .rx-fact-check {
direction: rtl;
}
[dir="rtl"] .rx-source-box {
border-inline-start: 1px solid var(--rx-reference-border-color);
border-inline-end: 4px solid var(--rx-citation-color);
}
/* ==========================================================================
19. Dark Mode
========================================================================== */
@media (prefers-color-scheme: dark) {
:root {
--rx-citation-color: var(--rx-color-primary-light, #8ab4ff);
--rx-citation-color-hover: #b5ccff;
--rx-citation-color-active: #d4e2ff;
--rx-reference-bg: var(--rx-surface, #101828);
--rx-reference-color: var(--rx-text, #f3f6fb);
--rx-reference-muted-color: var(--rx-text-muted, #b7c1d1);
--rx-reference-border-color: var(--rx-border, #263247);
--rx-citation-shadow-hover: 0 4px 14px rgb(0 0 0 / 0.35);
}
.rx-reference {
box-shadow: 0 1px 2px rgb(0 0 0 / 0.25);
}
.rx-reference:hover {
box-shadow: 0 10px 30px rgb(0 0 0 / 0.35);
}
.rx-source-chip {
background: color-mix(in srgb, var(--rx-reference-bg) 85%, #ffffff);
}
}
/* Manual dark class support */
.rx-theme-dark,
[data-theme="dark"] {
--rx-citation-color: var(--rx-color-primary-light, #8ab4ff);
--rx-citation-color-hover: #b5ccff;
--rx-citation-color-active: #d4e2ff;
--rx-reference-bg: var(--rx-surface, #101828);
--rx-reference-color: var(--rx-text, #f3f6fb);
--rx-reference-muted-color: var(--rx-text-muted, #b7c1d1);
--rx-reference-border-color: var(--rx-border, #263247);
--rx-citation-shadow-hover: 0 4px 14px rgb(0 0 0 / 0.35);
}
/* ==========================================================================
20. Responsive
========================================================================== */
@media (max-width: 640px) {
.rx-references__header {
display: block;
}
.rx-reference {
grid-template-columns: 1fr;
}
.rx-reference__number {
width: fit-content;
min-width: 2rem;
height: 2rem;
padding-inline: 0.65rem;
border-radius: 999px;
}
.rx-reference__meta,
.rx-reference__actions,
.rx-source-box__links {
gap: 0.4rem;
}
.rx-citation--tooltip::after {
max-width: min(240px, 88vw);
}
.rx-reference-table {
display: block;
overflow-x: auto;
white-space: nowrap;
}
}
/* ==========================================================================
21. Reduced Motion
========================================================================== */
@media (prefers-reduced-motion: reduce) {
.rx-citation,
.rx-reference,
.rx-reference__link,
.rx-reference__backlink,
.rx-citation--tooltip::before,
.rx-citation--tooltip::after {
transition: none;
}
.rx-citation:hover,
.rx-citation:focus-visible,
.rx-reference:hover,
.rx-reference__link:hover,
.rx-reference__backlink:hover {
transform: none;
}
}
/* ==========================================================================
22. Print Style
========================================================================== */
@media print {
.rx-citation {
border: 0;
background: transparent;
color: #000;
box-shadow: none;
text-decoration: none;
}
.rx-citation::before {
content: "[";
}
.rx-citation::after {
content: "]";
}
.rx-reference,
.rx-source-box,
.rx-fact-check,
.rx-citation-notice {
break-inside: avoid;
box-shadow: none;
background: #fff;
color: #000;
}
.rx-reference__link::after,
.rx-reference__title a::after {
content: " (" attr(href) ")";
font-size: 0.85em;
font-weight: 400;
word-break: break-all;
}
.rx-reference__backlink,
.rx-citation--tooltip::before,
.rx-citation--tooltip::after {
display: none;
}
.rx-references {
border-block-start: 1px solid #000;
}
}
/* ==========================================================================
23. Utility Helpers
========================================================================== */
.rx-citation-hidden {
position: absolute !important;
width: 1px !important;
height: 1px !important;
padding: 0 !important;
margin: -1px !important;
overflow: hidden !important;
clip: rect(0 0 0 0) !important;
white-space: nowrap !important;
border: 0 !important;
}
.rx-reference-muted {
color: var(--rx-reference-muted-color);
}
.rx-reference-break {
overflow-wrap: anywhere;
word-break: break-word;
}
.rx-reference-no-link-style a {
color: inherit;
text-decoration: none;
}
.rx-reference-no-link-style a:hover,
.rx-reference-no-link-style a:focus-visible {
color: var(--rx-citation-color);
text-decoration: underline;
text-underline-offset: 0.2em;
}
/* ==========================================================================
24. Optional WordPress Content Integration
========================================================================== */
.entry-content a[href^="#ref-"],
.article-content a[href^="#ref-"],
.post-content a[href^="#ref-"] {
scroll-margin-block-start: 7rem;
}
.entry-content sup a[href^="#ref-"]:not(.rx-citation),
.article-content sup a[href^="#ref-"]:not(.rx-citation),
.post-content sup a[href^="#ref-"]:not(.rx-citation) {
display: inline-flex;
align-items: center;
justify-content: center;
min-width: 1.55em;
min-height: 1.55em;
padding: var(--rx-citation-padding-block) var(--rx-citation-padding-inline);
border: 1px solid var(--rx-citation-border-color);
border-radius: var(--rx-citation-radius);
background: var(--rx-citation-bg);
color: var(--rx-citation-color);
font-size: var(--rx-citation-font-size);
font-weight: var(--rx-citation-font-weight);
line-height: var(--rx-citation-line-height);
text-decoration: none;
}
/* ==========================================================================
25. Fallback for Browsers Without color-mix()
========================================================================== */
@supports not (color: color-mix(in srgb, #000 50%, #fff)) {
:root {
--rx-citation-bg: #eef5ff;
--rx-citation-bg-hover: #e2efff;
--rx-citation-bg-active: #d6e8ff;
--rx-citation-border-color: #b8d4ff;
--rx-citation-border-color-hover: #8bb9ff;
}
.rx-source-box {
background: #f5f9ff;
}
.rx-fact-check {
background: #f5f9ff;
}
.rx-citation-notice {
background: #fff7ed;
border-color: #fed7aa;
}
}Example HTML use:
<p>
High-quality medical articles should cite reliable sources
<sup><a class="rx-citation rx-citation--tooltip" href="#ref-1" data-citation-title="PubMed clinical review">1</a></sup>
and updated guidelines
<sup><a class="rx-citation rx-citation--tooltip" href="#ref-2" data-citation-title="WHO guideline">2</a></sup>.
</p>
<section class="rx-references rx-references--compact" id="references">
<div class="rx-references__header">
<div>
<h2 class="rx-references__title">References</h2>
<p class="rx-references__subtitle">Evidence sources used in this article.</p>
</div>
</div>
<ol class="rx-references__list">
<li class="rx-reference" id="ref-1">
<span class="rx-reference__number">1</span>
<div class="rx-reference__body">
<h3 class="rx-reference__title">
<a href="#" target="_blank" rel="noopener noreferrer">
PubMed clinical review source title
</a>
</h3>
<div class="rx-reference__meta">
<span class="rx-source-chip rx-source-chip--pubmed">PubMed</span>
<span class="rx-evidence-badge rx-evidence-badge--review">Review</span>
<span>Accessed 2026</span>
</div>
<p class="rx-reference__note">
Short source note or evidence summary.
</p>
<div class="rx-reference__actions">
<a class="rx-reference__backlink" href="#citation-1">Back to article</a>
</div>
</div>
</li>
</ol>
</section>Best import path in your main CSS:
@import url("./components/citation.css");Or enqueue it separately in WordPress for better modular loading:
wp_enqueue_style(
'rx-citation',
get_theme_file_uri('/assets/static/static-css/components/citation.css'),
array(),
RX_THEME_VERSION
);