/* Article Layout Grid
   Replaces Distill's base-grid system.
   Named grid columns: screen, page, kicker, middle, text, gutter
   Total content width: 60px * 12 columns + 32px * 11 gaps = 1072px
   With 1fr margins on each side for centering.
*/

.base-grid,
.article-header,
.article-body,
.article-appendix {
    display: grid;
    grid-template-columns:
        [screen-start] 1fr
        [page-start kicker-start] 60px
        [middle-start] 60px
        [text-start kicker-end] 60px 60px 60px 60px 60px 60px 60px 60px
        [text-end gutter-start] 60px
        [middle-end] 60px
        [page-end gutter-end] 1fr
        [screen-end];
    grid-column-gap: 32px;
}

/* Default: children span the text column */
.article-body > *,
.article-appendix > * {
    grid-column: text;
}

/* Full-width elements */
.article-body .fullscreen,
.article-body .l-screen {
    grid-column: screen;
    width: 100%;
}

.article-body .l-page,
.article-body .fullwidth {
    grid-column: page;
    width: 100%;
}

.article-body .l-middle {
    grid-column: middle;
}

.article-body aside,
.article-body .side {
    grid-column: gutter;
}

/* Article Header (replaces d-title) */
.article-header {
    padding: 4rem 0 1rem;
}

.article-header > * {
    grid-column: text;
}

.article-header .teaser {
    grid-column: screen;
    width: 100%;
}

.article-header h1 {
    font-size: 50px;
    line-height: 1.25em;
    font-weight: 700;
    margin: 0;
}

.article-header .subtitle {
    font-weight: 300;
    font-size: 1.2rem;
    line-height: 1.55em;
    margin-top: 0;
}

.article-header .teaser {
    grid-column: screen;
    width: 100%;
}

/* Article Body (replaces d-article) */
.article-body {
    padding-top: 1.5rem;
    color: rgba(0, 0, 0, 0.8);
    font-size: 1rem;
    line-height: 1.8;
}

.article-body h2 {
    font-size: 24px;
    font-weight: 700;
    margin: 2rem 0 1rem;
    padding: 0;
}

.article-body h3 {
    font-size: 18px;
    font-weight: 700;
    margin: 1.5rem 0 0.75rem;
}

.article-body h4 {
    font-size: 16px;
    font-weight: 700;
    margin: 1rem 0 0.5rem;
}

.article-body p {
    margin: 0 0 1rem 0;
}

.article-body blockquote {
    border-left: 3px solid rgba(0, 0, 0, 0.1);
    padding-left: 1.5rem;
    margin: 1rem 0;
    color: rgba(0, 0, 0, 0.6);
}

.article-body figure {
    margin: 1.5rem 0;
}

.article-body figure img {
    width: 100%;
}

.article-body figcaption,
.article-header figcaption {
    color: rgba(0, 0, 0, 0.6);
    font-size: 13px;
    line-height: 1.5em;
    text-align: center;
}

.article-body pre {
    padding: 1rem;
    background: #f7f7f7;
    border-radius: 4px;
    overflow-x: auto;
    font-size: 0.9rem;
    line-height: 1.5;
}

.article-body code {
    font-size: 0.9em;
    background: rgba(0, 0, 0, 0.04);
    padding: 0.1em 0.3em;
    border-radius: 3px;
}

.article-body pre code {
    background: none;
    padding: 0;
}

.article-body table {
    border-collapse: collapse;
    width: 100%;
    margin: 1rem 0;
    font-size: 0.9rem;
}

.article-body th,
.article-body td {
    border: 1px solid #e0e0e0;
    padding: 0.5rem 0.75rem;
    text-align: left;
}

.article-body th {
    background: #f7f7f7;
    font-weight: 600;
}

.article-body a {
    color: #007f80;
    text-decoration: none;
}

.article-body a:hover {
    text-decoration: underline;
}

/* Citations (inline) */
.citation-ref {
    font-size: 0.75em;
    vertical-align: super;
    line-height: 0;
    color: #007f80;
    cursor: pointer;
    text-decoration: none;
    position: relative;
}

.citation-ref:hover {
    text-decoration: underline;
}

.citation-ref[data-tooltip]:hover::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: #232F3E;
    color: white;
    padding: 0.5rem 0.75rem;
    border-radius: 4px;
    font-size: 0.8rem;
    line-height: 1.4;
    white-space: normal;
    width: max-content;
    max-width: 350px;
    z-index: 100;
    pointer-events: none;
    vertical-align: baseline;
    font-weight: normal;
    margin-bottom: 4px;
}

/* Appendix (replaces d-appendix) */
.article-appendix {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    font-size: 0.85rem;
    color: rgba(0, 0, 0, 0.5);
}

.article-appendix > * {
    grid-column: text;
}

.article-appendix h3 {
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin: 1.5rem 0 0.75rem;
}

/* Bibliography list */
.bibliography-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.bibliography-list li {
    padding: 0.5rem 0;
    padding-left: 2rem;
    text-indent: -2rem;
    line-height: 1.6;
    color: rgba(0, 0, 0, 0.7);
    font-size: 0.85rem;
}

.bibliography-list .bib-number {
    font-weight: 600;
    color: rgba(0, 0, 0, 0.5);
    margin-right: 0.25rem;
}

.bibliography-list a {
    color: #007f80;
    text-decoration: none;
}

.bibliography-list a:hover {
    text-decoration: underline;
}

/* TOC */
.toc-container {
    grid-column: text;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: #f8f9fa;
    border-radius: 8px;
}

.toc-title {
    font-weight: 600;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: rgba(0, 0, 0, 0.5);
}

.toc-link {
    display: block;
    padding: 0.2rem 0;
    color: rgba(0, 0, 0, 0.7);
    text-decoration: none;
    font-size: 0.9rem;
}

.toc-link:hover {
    color: #007f80;
}

.toc-link.toc-3 {
    padding-left: 1rem;
    font-size: 0.85rem;
}

/* Typography - system fonts (replaces Distill font loading) */
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Fira Sans", "Droid Sans", "Helvetica Neue", Arial, sans-serif;
}

.article-header h1,
.article-body h1,
.article-body h2,
.article-body h3,
.article-body h4,
.article-body h5,
.article-body h6 {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Fira Sans", "Droid Sans", "Helvetica Neue", Arial, sans-serif;
}