/* Shared taxonomy preview and full reading workspace. */
.page-shell.paper-page-shell { width: min(1240px, calc(100% - 32px)); }
.paper-page-shell .viewer-title-block { display: none; }
.paper-page-shell .viewer-article {
  padding: 24px 0;
  border: 0;
  border-radius: 0;
  background: none;
  box-shadow: none;
  backdrop-filter: none;
}
.paper-page-shell .category-nav-inline { padding: 0; margin-bottom: 10px; }
.paper-tree-host { --paper-accent: #7ddcd3; }
.paper-tree-host [hidden] { display: none !important; }
.paper-tree-host button,
.paper-tree-host input { font: inherit; }
.paper-tree-host button { color: inherit; cursor: pointer; }
.paper-tree-host :is(button, a, input, summary):focus-visible {
  outline: 2px solid var(--paper-accent);
  outline-offset: 3px;
}
.paper-tree-host button:disabled { opacity: .4; cursor: default; }
.paper-tree-host .paper-empty { color: var(--muted); font-size: .88rem; }
.paper-preview-intro {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 6px 16px;
  padding-bottom: 14px;
  color: var(--muted);
  font-size: .8rem;
}
.paper-preview-intro span:first-child { color: var(--paper-accent); }
.paper-tree-host .paper-tree-list,
.paper-tree-host .paper-tree-list ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.paper-tree-host .paper-tree-list ul {
  margin-left: 10px;
  padding-left: 12px;
  border-left: 1px solid var(--line-soft);
}
.paper-tree-host .paper-tree-list li { margin: 0; }
.paper-branch > summary {
  position: relative;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 3px 7px 3px 0;
  min-height: 38px;
  list-style: none;
  cursor: pointer;
  font-size: .88rem;
}
.paper-branch > summary::-webkit-details-marker { display: none; }
.paper-branch > summary::before {
  content: '›';
  flex: 0 0 14px;
  color: var(--faint);
  text-align: center;
  transition: transform 150ms ease;
}
.paper-branch[open] > summary::before { transform: rotate(90deg); }
.paper-branch > summary > span { flex: 1; overflow-wrap: anywhere; }
.paper-branch small,
.paper-all small { color: var(--faint); font-size: .73rem; font-variant-numeric: tabular-nums; }
.paper-folder {
  flex: 1;
  min-width: 0;
  border: 0;
  border-radius: 5px;
  padding: 6px 8px;
  background: transparent;
  text-align: left;
  overflow-wrap: anywhere;
}
.paper-tree-host .paper-leaf {
  display: flex;
  align-items: baseline;
  gap: 7px;
  width: 100%;
  border: 0;
  border-radius: 5px;
  padding: 8px;
  background: transparent;
  color: var(--muted);
  text-align: left;
  text-decoration: none;
  font-size: .8rem;
  line-height: 1.5;
}
.paper-leaf > span:nth-child(2) { flex: 1; min-width: 0; overflow-wrap: anywhere; }
.paper-leaf small { color: var(--faint); white-space: nowrap; font-size: .65rem; }
.paper-note-dot { width: 5px; height: 5px; flex: 0 0 5px; border-radius: 50%; background: var(--faint); }
.paper-note-dot.has-note { background: var(--paper-accent); }
.paper-folder:hover,
.paper-tree-host .paper-leaf:hover { background: rgba(255, 255, 255, .05); }
.paper-tree-host [aria-current="true"] { color: var(--paper-accent); background: rgba(125, 220, 211, .09); }
.paper-explorer-head { padding: 8px 0 26px; border-bottom: 1px solid var(--line-soft); }
.paper-eyebrow { color: var(--paper-accent); font-size: .68rem; letter-spacing: .2em; }
.paper-tree-host .paper-explorer-head h1 { margin: 9px 0; padding: 0; border: 0; font-size: 2rem; }
.paper-tree-host .paper-explorer-head p { margin: 0 0 12px; color: var(--muted); }
.paper-stats { color: var(--paper-accent); font-size: .82rem; }
.paper-workspace { display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 28px; padding-top: 24px; }
.paper-taxonomy {
  position: sticky;
  top: 20px;
  align-self: start;
  max-height: calc(100vh - 40px);
  overflow: auto;
  scrollbar-gutter: stable;
  padding-right: 12px;
  border-right: 1px solid var(--line-soft);
}
.paper-all { display: flex; justify-content: space-between; width: 100%; margin-bottom: 8px; }
.paper-main { min-width: 0; }
.paper-filters { display: flex; flex-wrap: wrap; align-items: end; gap: 14px; margin-bottom: 22px; }
.paper-search-label { flex: 1 1 240px; color: var(--muted); font-size: .8rem; }
.paper-search-label input {
  display: block;
  width: 100%;
  min-width: 0;
  margin-top: 7px;
  padding: 11px 13px;
  border: 1px solid var(--line-soft);
  border-radius: 7px;
  background: rgba(255, 255, 255, .035);
  color: var(--text);
}
.paper-notes-filter { display: flex; align-items: center; gap: 5px; min-height: 42px; color: var(--muted); font-size: .8rem; cursor: pointer; }
.paper-notes-filter input { accent-color: var(--paper-accent); }
.paper-results-meta { margin-bottom: 12px; color: var(--faint); font-size: .78rem; overflow-wrap: anywhere; }
.paper-results { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.paper-card { display: flex; flex-direction: column; padding: 18px; border: 1px solid var(--line-soft); border-radius: 8px; background: rgba(255, 255, 255, .025); }
.paper-card:hover { border-color: rgba(125, 220, 211, .3); }
.paper-card-top { display: flex; align-items: start; justify-content: space-between; gap: 10px; color: var(--faint); font-size: .65rem; }
.paper-card-top > span:first-child { overflow-wrap: anywhere; }
.paper-status { flex-shrink: 0; color: var(--muted); }
.paper-status.has-note { color: var(--paper-accent); }
.paper-tree-host .paper-card h2 { margin: 12px 0 10px; padding: 0; border: 0; font-size: 1rem; line-height: 1.5; }
.paper-card h2 button { padding: 0; border: 0; background: none; text-align: left; overflow-wrap: anywhere; }
.paper-tree-host .paper-excerpt { display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 3; overflow: hidden; margin: 0 0 18px; color: var(--muted); font-size: .8rem; line-height: 1.8; }
.paper-tree-host .paper-read-link { margin-top: auto; padding-top: 8px; color: var(--paper-accent); font-size: .75rem; text-decoration: none; }
.paper-back { padding: 5px 0; border: 0; background: none; font-size: .8rem !important; }
.paper-tree-host .paper-reader-title { margin: 16px 0; border: 0; padding: 0; font-size: 1.65rem; overflow-wrap: anywhere; }
.paper-reader-actions { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 12px; padding-bottom: 22px; border-bottom: 1px solid var(--line-soft); }
.paper-reader-actions a { color: var(--muted); font-size: .75rem; }
.paper-source-unavailable { color: var(--faint); font-size: .75rem; }
.paper-title-row { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 10px; margin: 12px 0 10px; font-size: 1rem; }
.paper-reader-heading { margin: 16px 0; font-size: 1.65rem; }
.paper-tree-host .paper-title-row h2 { min-width: 0; margin: 0; }
.paper-tree-host .paper-publication { max-width: 100%; margin: 0; padding: 0; border: 0; background: none; color: var(--muted); font-size: .8em; font-weight: 400; line-height: 1.5; text-decoration: none; overflow-wrap: anywhere; }
.paper-tree-host .paper-publication:hover { color: #d8b4fe; text-decoration: underline; }
.paper-modes { display: flex; flex-wrap: wrap; max-width: 100%; gap: 4px; padding: 4px; border: 1px solid var(--line-soft); border-radius: 7px; }
.paper-modes button { border: 0; border-radius: 4px; background: none; padding: 7px 14px; font-size: .8rem; }
.paper-modes [aria-pressed="true"] { background: rgba(125, 220, 211, .12); color: var(--paper-accent); }
.paper-reader-body { padding-top: 8px; overflow-wrap: anywhere; line-height: 1.95; }
.paper-html-frame { display: block; width: 100%; height: 80vh; min-height: 420px; margin-top: 12px; border: 0; border-radius: 8px; background: #0d1020; color-scheme: dark; }
.paper-html-frame[data-theme="light"] { background: #fff; color-scheme: light; }
.paper-reader-body :is(pre, .math-display, mjx-container[display="true"]) { max-width: 100%; overflow-x: auto; }
@media (max-width: 960px) {
  .paper-workspace { grid-template-columns: 220px minmax(0, 1fr); gap: 20px; }
  .paper-results { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 700px) {
  .page-shell.paper-page-shell { width: calc(100% - 24px); }
  .paper-workspace { grid-template-columns: minmax(0, 1fr); }
  .paper-taxonomy { position: static; max-height: 250px; border-right: 0; border-bottom: 1px solid var(--line-soft); padding-bottom: 12px; }
  .paper-tree-host .paper-reader-title { font-size: 1.35rem; }
  .paper-reader-heading { font-size: 1.35rem; }
}