/* Paper — web render of the working manuscript + SI (site/atlas/paper/).
   Inherits tokens + site chrome via the shared shell; only reader-specific
   rules live here. */

@import url("../../shared/css/shell.css");


/* ---------- Shell: tabs + sidebar/article layout ---------- */

.paper-shell {
  max-width: 1160px;
  margin: 0 auto;
  padding: var(--sp-5) var(--sp-5) var(--sp-8);
}

.paper-tabs {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  border-bottom: 1px solid var(--rule);
  margin-bottom: var(--sp-5);
}
.paper-tab {
  font-family: var(--font-display);
  font-size: 13.5px;
  font-weight: 500;
  color: var(--ink-muted);
  text-decoration: none;
  padding: 10px 14px;
  margin-bottom: -1px;
  border-bottom: 2px solid transparent;
}
.paper-tab:hover { color: var(--oxblood); text-decoration: none; }
.paper-tab.is-active {
  color: var(--oxblood);
  border-bottom-color: var(--oxblood);
  font-weight: 600;
}
.paper-changes-toggle {
  margin-left: auto;
  margin-bottom: 6px;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 500;
  color: var(--ink-muted);
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 999px;
  padding: 5px 12px;
  transition: background 0.12s var(--ease), color 0.12s var(--ease);
}
.paper-changes-toggle:hover { color: var(--oxblood); background: var(--oxblood-tint); }
.paper-changes-toggle[aria-pressed="true"] {
  background: var(--oxblood);
  border-color: var(--oxblood);
  color: var(--paper);
}
.paper-changes-toggle[hidden] { display: none; }

.paper-layout {
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr);
  gap: var(--sp-7);
  align-items: start;
}

/* ---------- TOC: sticky sidebar (≥900px) ⇄ disclosure (<900px) ---------- */

.paper-toc {
  font-family: var(--font-display);
  font-size: 13px;
}
.paper-toc > summary {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-muted);
  cursor: pointer;
}
.paper-toc a {
  display: block;
  padding: 3px 6px;
  margin: 0 -6px;
  color: var(--ink-muted);
  text-decoration: none;
  line-height: 1.4;
  font-size: 13px;
  border-radius: var(--radius);
}
.paper-toc a:hover { color: var(--oxblood); }
.paper-toc a.is-active {
  color: var(--oxblood);
  font-weight: 500;
  background: var(--oxblood-tint);
}

/* Section hierarchy mirrors the manuscript outline (shifted one level):
   h2 (\section) → l1, h3 (\subsection) → l2. */
.paper-toc a.toc-l1 {
  font-weight: 500;
  color: var(--ink);
  margin-top: 4px;
}
.paper-toc a.toc-l1.is-active { color: var(--oxblood); }
.paper-toc a.toc-l2 {
  padding-left: calc(var(--sp-4) + 6px);
  font-size: 12.5px;
}

/* Sub-list section labels (Figures, Tables). */
.paper-toc-section-label {
  margin: var(--sp-3) -6px 4px;
  padding: var(--sp-2) 6px 4px;
  border-top: 1px solid var(--rule);
  font-family: var(--font-display);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--ink-muted);
}
.paper-toc a.toc-fig,
.paper-toc a.toc-tab {
  display: flex;
  gap: 6px;
  align-items: baseline;
  font-size: 12px;
}
.paper-toc a.toc-fig .toc-numref,
.paper-toc a.toc-tab .toc-numref {
  flex: 0 0 auto;
  color: var(--oxblood);
  font-weight: 500;
  font-family: var(--font-display);
  letter-spacing: 0.01em;
}
.paper-toc a.toc-fig .toc-captext,
.paper-toc a.toc-tab .toc-captext {
  flex: 1 1 auto;
  color: var(--ink-muted);
  /* 2-line clamp keeps long captions readable inside the narrow panel. */
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.paper-toc a.toc-fig:hover .toc-captext,
.paper-toc a.toc-tab:hover .toc-captext { color: var(--oxblood); }

@media (min-width: 900px) {
  .paper-toc {
    position: sticky;
    top: 76px;
    max-height: calc(100vh - 108px);
    overflow-y: auto;
    padding-right: var(--sp-2);
  }
  /* Always open as a sidebar; reader.js sets [open], CSS makes the summary
     a plain label so it can't be collapsed. */
  .paper-toc > summary {
    pointer-events: none;
    list-style: none;
    margin-bottom: var(--sp-2);
  }
  .paper-toc > summary::-webkit-details-marker { display: none; }
  .paper-toc > summary::marker { content: ""; }
}

@media (max-width: 899.98px) {
  .paper-layout { display: block; }
  .paper-toc {
    background: var(--surface);
    border: 1px solid var(--rule);
    border-radius: var(--radius-lg);
    padding: var(--sp-3) var(--sp-4);
    margin-bottom: var(--sp-5);
  }
  .paper-toc[open] > summary { margin-bottom: var(--sp-2); }
}

/* ---------- Paper head + body ---------- */

.paper-body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  color: var(--ink);
  max-width: 70ch;
}
.paper-body p { margin: 0 0 var(--sp-3) 0; }

.paper-head { margin-bottom: var(--sp-6); }
.paper-tag {
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--oxblood);
  display: block;
  margin-bottom: var(--sp-2);
}
.paper-head h1 {
  font-size: 30px;
  font-weight: 500;
  line-height: 1.15;
  margin: 0 0 var(--sp-3) 0;
}
.paper-authors {
  font-family: var(--font-display);
  font-size: 14px;
  color: var(--ink-muted);
  margin: 0 0 var(--sp-2) 0;
}
.paper-affiliations {
  font-size: 12px;
  color: var(--ink-faint);
  padding-left: 1.25em;
  margin: 0 0 var(--sp-2) 0;
}
.paper-corresponding {
  font-size: 12px;
  color: var(--ink-muted);
  margin: 0 0 var(--sp-3) 0;
}

.paper-abstract, .paper-plain-language, .paper-keypoints {
  margin-bottom: var(--sp-5);
  padding: var(--sp-4) var(--sp-5);
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
}
.paper-abstract h2,
.paper-plain-language h2,
.paper-keypoints h2 {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-muted);
  margin: 0 0 var(--sp-2) 0;
}

/* Content headings: h2 (\section) / h3 (\subsection) / h4 (\subsubsection). */
.paper-content h2 {
  font-family: var(--font-display);
  margin: var(--sp-6) 0 var(--sp-2) 0;
  font-size: 22px;
  letter-spacing: -0.005em;
  font-weight: 500;
  color: var(--ink);
  scroll-margin-top: 96px;
}
.paper-content h3 {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 500;
  color: var(--ink);
  margin: var(--sp-5) 0 var(--sp-2) 0;
  scroll-margin-top: 96px;
}
.paper-content h4 {
  font-family: var(--font-display);
  font-size: 14.5px;
  font-weight: 600;
  color: var(--ink-muted);
  margin: var(--sp-4) 0 var(--sp-2) 0;
  scroll-margin-top: 96px;
}

.paper-keypoints ul { margin: 0; padding-left: 1.25em; }
.paper-keypoints li { margin-bottom: 4px; }

/* Equations */
.paper-content .math { font-size: 1em; }

/* Figures + tables */
.paper-content figure {
  margin: var(--sp-5) 0;
  padding: 0;
  scroll-margin-top: 96px;
}
.paper-content figure img {
  max-width: 100%;
  height: auto;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
}
.paper-content figcaption {
  margin-top: var(--sp-2);
  font-size: 13px;
  color: var(--ink-muted);
  line-height: 1.5;
}
/* Caption-only floats (e.g. TikZ diagrams pandoc cannot render). */
.paper-content figure:not(:has(img)) {
  border: 1px dashed var(--rule);
  border-radius: var(--radius);
  padding: var(--sp-3) var(--sp-4);
}
.paper-content figure:not(:has(img))::before {
  content: "Diagram not rendered in the web view — see the typeset manuscript.";
  display: block;
  font-family: var(--font-display);
  font-size: 12px;
  font-style: italic;
  color: var(--ink-faint);
  margin-bottom: var(--sp-2);
}
.paper-content .caption-label {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--ink);
  margin-right: 6px;
}
.paper-content table {
  border-collapse: collapse;
  font-size: 13.5px;
  margin: var(--sp-4) 0;
  scroll-margin-top: 96px;
}
.paper-content table caption {
  caption-side: top;
  text-align: left;
  font-size: 13px;
  color: var(--ink-muted);
  line-height: 1.5;
  margin-bottom: var(--sp-2);
}
.paper-content th,
.paper-content td {
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding: 6px 10px;
  text-align: left;
  vertical-align: top;
}
.paper-content thead th { border-bottom: 2px solid var(--ink-muted); }

/* Citations + bibliography rendered by citeproc */
.paper-content .citation { color: var(--oxblood); }
.paper-content .citation a { color: inherit; text-decoration: none; border-bottom: 1px dotted currentColor; }
.paper-content #refs, .paper-content .references {
  margin-top: var(--sp-4);
  font-size: 14px;
  line-height: 1.5;
}
.paper-content #refs > div, .paper-content .references > div {
  padding-left: 1.5em;
  text-indent: -1.5em;
  margin-bottom: var(--sp-2);
  color: var(--ink-muted);
}

/* ---------- Track changes ---------- */
/* Clean view (default): additions read as settled prose, removals and margin
   notes are hidden. body.changes-visible (reader.js toggle) reveals the
   tracked markup. */
.paper-content ins { text-decoration: none; background: transparent; color: inherit; }
.paper-content del { display: none; }
.paper-content .margin-note { display: none; }

body.changes-visible .paper-content ins {
  background: oklch(94% 0.10 130);
  text-decoration: underline;
  text-decoration-color: oklch(55% 0.13 130);
}
body.changes-visible .paper-content del {
  display: inline;
  color: var(--ink-faint);
  text-decoration: line-through;
  text-decoration-color: oklch(55% 0.13 25);
  background: oklch(96% 0.04 25);
}
body.changes-visible .paper-content .margin-note {
  display: inline-block;
  background: oklch(96% 0.04 250);
  border-left: 2px solid oklch(55% 0.10 250);
  padding: 2px 6px;
  font-size: 13px;
  color: oklch(35% 0.10 250);
  margin: 0 2px;
}
body.changes-visible .paper-content .margin-note::before {
  content: attr(data-editor) " · ";
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  text-transform: capitalize;
}

/* ---------- Equation anchors ---------- */
/* Invisible spans injected by build_manuscript_web.py to give each
   numbered equation a hash target. scroll-margin-top keeps the equation
   below the sticky draft banner when the hash link is followed. */
.eq-anchor {
  display: block;
  height: 0;
  scroll-margin-top: 100px;
}

/* ---------- Figure refs (pandoc \ref{fig:X} → .figref) ---------- */
.paper-content .figref {
  color: var(--oxblood);
  text-decoration: none;
  border-bottom: 1px dotted currentColor;
  cursor: zoom-in;
}
.paper-content .figref:hover {
  color: var(--oxblood-dim);
  border-bottom-style: solid;
}

/* ---------- Lightbox overlay ---------- */
.paper-lightbox {
  display: none;
  position: fixed;
  inset: 0;
  background: oklch(15% 0.01 60 / 0.92);
  z-index: 300;
  align-items: center;
  justify-content: center;
  padding: var(--sp-5);
  cursor: zoom-out;
}
.paper-lightbox.is-open { display: flex; flex-direction: column; }
.paper-lightbox-img {
  max-width: 92vw;
  max-height: 82vh;
  object-fit: contain;
  border-radius: var(--radius);
  box-shadow: 0 0 40px oklch(0% 0 0 / 0.5);
  background: var(--paper);
}
.paper-lightbox-caption {
  margin-top: var(--sp-3);
  max-width: 720px;
  color: oklch(85% 0.005 60);
  font-family: var(--font-display);
  font-size: 13px;
  line-height: 1.5;
  text-align: center;
  padding: 0 var(--sp-4);
}
.paper-lightbox-close,
.paper-lightbox-prev,
.paper-lightbox-next {
  position: absolute;
  background: transparent;
  color: oklch(85% 0.005 60);
  border: 0;
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
  padding: 4px 10px;
  border-radius: var(--radius);
}
.paper-lightbox-close { top: var(--sp-4); right: var(--sp-4); }
.paper-lightbox-prev,
.paper-lightbox-next {
  top: 50%;
  transform: translateY(-50%);
  font-size: 40px;
  padding: 8px 14px;
}
.paper-lightbox-prev { left: var(--sp-4); }
.paper-lightbox-next { right: var(--sp-4); }
.paper-lightbox-close:hover,
.paper-lightbox-prev:hover,
.paper-lightbox-next:hover { background: oklch(30% 0.01 60 / 0.5); }
.paper-lightbox-prev[hidden], .paper-lightbox-next[hidden] { display: none; }
body.paper-lightbox-open { overflow: hidden; }