/* ====================================================================
   PAPERS — publications screen
   ====================================================================
   Two-column shell — main paper rows on the left, metrics/filter/cite
   on the right. The metrics aside lives inside the page body (not the
   site right rail) because it's content-coupled — h-index / citations
   describe the entries shown next to it, not the chassis state.
   ==================================================================== */

.papers-body {
  padding: 32px 40px 60px;
  min-width: 0;
}

.papers-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 40px;
  align-items: start;
}

.papers-col { min-width: 0; }

/* ─── header block ─── */

.papers-kicker {
  font-family: var(--io-font-display);
  font-size: var(--io-fs-micro);
  letter-spacing: 0.14em;
  color: var(--io-accent-bright);
  text-transform: uppercase;
}
.papers-kicker .dot { margin-right: 4px; color: var(--io-accent); }

.papers-title {
  margin: 10px 0 0;
  font-family: var(--io-font-display);
  font-size: var(--io-fs-xl);
  line-height: 1.05;
  font-weight: 600;
  color: var(--io-text-primary);
}

.papers-lede {
  margin: 14px 0 0;
  max-width: 720px;
  font-family: var(--io-font-mono);
  font-size: var(--io-fs-sm);
  line-height: 1.65;
  color: var(--io-text-secondary);
}
.papers-link { color: var(--io-accent-bright); }

.papers-divider {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 28px 0 14px;
}
.papers-divider .rule { flex: 1; height: 1px; background: var(--io-border); }
.papers-divider .label {
  font-family: var(--io-font-display);
  font-size: var(--io-fs-micro);
  letter-spacing: 0.18em;
  color: var(--io-text-tertiary);
  text-transform: uppercase;
}

/* ─── paper rows ─── */

.paper-list { display: flex; flex-direction: column; }

.paper-row {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr) 160px;
  gap: 22px;
  padding: 22px 0;
  border-bottom: 1px solid var(--io-border-subtle);
}

.paper-year {
  font-family: var(--io-font-pixel);
  font-size: var(--io-fs-xl);
  line-height: 1;
  color: var(--io-accent-bright);
}
.paper-year.draft { color: var(--io-warning); }

.paper-content { min-width: 0; }

.paper-title {
  margin: 0;
  font-family: var(--io-font-mono);
  font-size: var(--io-fs-lg);
  font-weight: 700;
  line-height: 1.25;
  color: var(--io-text-primary);
}

.paper-title .glitch-text {
  display: inline;
  outline: none;
  cursor: default;
  transition: color 120ms ease, text-shadow 120ms ease;
}
.paper-title .glitch-text:hover,
.paper-title .glitch-text:focus {
  color: var(--io-accent-bright);
  text-shadow: 0 0 8px var(--io-accent-glow);
}

.paper-meta {
  margin-top: 6px;
  font-family: var(--io-font-mono);
  font-size: var(--io-fs-micro);
  color: var(--io-text-tertiary);
}
.paper-meta .sep   { color: var(--io-text-disabled); margin: 0 6px; }
.paper-venue       { color: var(--io-text-secondary); }

.paper-chip-draft {
  display: inline-flex;
  align-items: center;
  margin-left: 10px;
  padding: 1px 6px;
  min-height: 18px;
  border: 1px solid var(--io-warning);
  color: var(--io-warning);
  font-family: var(--io-font-pixel);
  font-size: 8px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.paper-abstract {
  margin: 10px 0 0;
  max-width: 640px;
  font-family: var(--io-font-mono);
  font-size: var(--io-fs-sm);
  line-height: 1.55;
  color: var(--io-text-secondary);
  /* Clamp to 2 lines until clicked. -webkit prefix is what every engine
     actually implements today (Chrome / Edge / Safari / Firefox 68+). */
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  cursor: pointer;
  transition: color 120ms ease;
}
.paper-abstract:hover { color: var(--io-text-primary); }
.paper-abstract.expanded {
  display: block;
  -webkit-line-clamp: unset;
  overflow: visible;
  cursor: default;
}

.paper-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
  align-items: center;
}
/* Hide pills past the 4th until the wrapper has .expanded. nth-child(n+5)
   targets the 5th, 6th, … so the first four always render. */
.paper-tags:not(.expanded) > .kr-tag:nth-child(n+5) { display: none; }
.paper-tags.expanded .paper-tags-more { display: none; }

.paper-tags-more {
  background: transparent;
  border: 1px dashed var(--io-border);
  border-radius: var(--io-radius-sm);
  padding: 2px 8px;
  font-family: var(--io-font-mono);
  font-size: var(--io-fs-micro);
  color: var(--io-text-tertiary);
  cursor: pointer;
  transition: color 120ms ease, border-color 120ms ease;
}
.paper-tags-more:hover {
  color: var(--io-accent-bright);
  border-color: var(--io-accent-dim);
}

/* ─── action column ─── */

.paper-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  justify-content: center;
  gap: 10px;
}

.paper-cites {
  font-family: var(--io-font-mono);
  font-size: var(--io-fs-micro);
  color: var(--io-text-tertiary);
  white-space: nowrap;
}

.paper-actions-row {
  display: grid;
  grid-template-columns: repeat(3, 34px);
  gap: 6px;
}

.paper-action-btn {
  width: 34px;
  height: 30px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  border: 1px solid var(--io-border);
  border-radius: var(--io-radius-sm);
  background: var(--io-surface-sunken);
  color: var(--io-text-tertiary);
  cursor: pointer;
  text-decoration: none;
  transition: color 140ms ease, border-color 140ms ease, background 140ms ease, box-shadow 140ms ease;
}
.paper-action-btn i { font-size: var(--io-fs-sm); line-height: 1; }
.paper-action-btn:hover {
  background: var(--io-surface-overlay);
  color: var(--io-text-primary);
}
.paper-action-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  background: var(--io-surface-sunken);
  border-color: var(--io-border-subtle);
}
.paper-action-btn:disabled:hover {
  background: var(--io-surface-sunken);
  border-color: var(--io-border-subtle);
  color: var(--io-text-tertiary);
}

.paper-action-btn.pdf:hover {
  color: var(--io-accent-bright);
  box-shadow: inset 0 0 10px var(--io-accent-subtle);
}
.paper-action-btn.cite:hover { color: var(--io-warning); }

.paper-action-btn.read {
  border-color: var(--io-accent-dim);
  color: var(--io-accent);
}
.paper-action-btn.read:hover {
  color: var(--io-accent-bright);
  box-shadow: 0 0 8px var(--io-accent-glow);
}

/* ─── right aside ─── */

.papers-aside {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.papers-rail-heading {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--io-font-display);
  font-size: var(--io-fs-micro);
  letter-spacing: 0.12em;
  color: var(--io-text-tertiary);
  text-transform: uppercase;
}
.papers-rail-heading i      { color: var(--io-accent); }
.papers-rail-heading .label { color: var(--io-text-secondary); }
.papers-rail-heading .rule  { flex: 1; height: 1px; background: var(--io-border); }

.metrics-card {
  margin-top: 12px;
  padding: 14px;
  background: var(--io-surface-raised);
  border: 1px solid var(--io-border-subtle);
  font-family: var(--io-font-mono);
}

.metric-line {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 6px 0;
  font-size: var(--io-fs-sm);
}
.metric-line .k          { color: var(--io-text-tertiary); }
.metric-line .v          { color: var(--io-text-primary); }
.metric-line .v.accent   { color: var(--io-accent-bright); }

.filter-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 10px;
  font-family: var(--io-font-mono);
  font-size: var(--io-fs-sm);
}

.filter-row {
  display: flex;
  justify-content: space-between;
  padding: 6px 8px;
  border-left: 2px solid transparent;
  color: var(--io-text-secondary);
  cursor: pointer;
}
.filter-row.on {
  background: var(--io-accent-subtle);
  border-left-color: var(--io-accent);
  color: var(--io-text-primary);
}
.filter-row .n { color: var(--io-text-tertiary); }

.cite-bibtex {
  margin: 12px 0 0;
  padding: 12px;
  background: var(--io-surface-sunken);
  border: 1px solid var(--io-border);
  font-family: var(--io-font-mono);
  font-size: var(--io-fs-micro);
  color: var(--io-text-secondary);
  line-height: 1.55;
  overflow: auto;
  white-space: pre;
}

/* ─── click target on paper rows ──────────────────────────────────────
   The body / title is clickable to open the confirm modal. Only applied
   when a PdfUrl is present (renderer omits data-paper-open otherwise),
   so we can lean on the attribute selector for the cursor. */
.paper-content[data-paper-open] { cursor: pointer; }
.paper-content[data-paper-open]:hover .paper-title { color: var(--io-accent-bright); }

/* ====================================================================
   PAPER MODAL — confirm-before-open-PDF
   Backdrop with real blur, scale+fade on the box. Hotkeys handled by
   /static/js/paper-modal.js. Markup emitted once by BlogShellRender so
   every page can fire it without re-emitting the DOM.
   ==================================================================== */

.modal-backdrop {
  position: fixed; inset: 0;
  z-index: 200;
  display: flex; align-items: center; justify-content: center;
  background: rgba(0, 0, 0, 0.55);
  -webkit-backdrop-filter: blur(0);
          backdrop-filter: blur(0);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.22s ease, backdrop-filter 0.22s ease, -webkit-backdrop-filter 0.22s ease;
}
.modal-backdrop.open {
  opacity: 1;
  pointer-events: auto;
  -webkit-backdrop-filter: blur(8px);
          backdrop-filter: blur(8px);
}

.modal-backdrop .modal {
  width: 460px; max-width: calc(100vw - 48px);
  background: var(--io-surface-raised);
  border: 1px solid var(--io-accent-dim);
  border-radius: var(--io-radius-xs);
  box-shadow:
    0 24px 64px rgba(0,0,0,0.7),
    0 0 0 1px var(--io-accent-dim),
    0 0 48px var(--io-accent-glow);
  transform: scale(0.94) translateY(8px);
  opacity: 0;
  transition: transform 0.22s ease, opacity 0.22s ease;
  overflow: hidden;
  position: relative;
}
.modal-backdrop.open .modal {
  transform: scale(1) translateY(0);
  opacity: 1;
}
.modal-backdrop .modal::before {
  content: "";
  position: absolute; top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--io-accent), transparent);
}

.modal-head {
  padding: 22px 24px 14px;
  display: flex; flex-direction: column; gap: 10px;
}
.modal-head .ic {
  width: 44px; height: 44px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--io-accent-subtle);
  border: 1px solid var(--io-accent-dim);
  border-radius: var(--io-radius-xs);
  color: var(--io-accent);
  font-size: var(--io-fs-lg);
  margin-bottom: 6px;
}
.modal-head .ttl {
  font-family: var(--io-font-mono);
  font-size: var(--io-fs-lg);
  font-weight: 500;
  color: var(--io-text-primary);
  letter-spacing: -0.01em;
  line-height: 1.3;
}

.modal-body { padding: 6px 24px 18px; }
.modal-body .paper-card {
  border: 1px solid var(--io-border);
  border-radius: var(--io-radius-xs);
  background: var(--io-surface-sunken);
  padding: 14px 16px;
}
.modal-body .paper-card .l {
  font-family: var(--io-font-pixel);
  font-size: var(--io-fs-micro);
  letter-spacing: 1.5px;
  color: var(--io-text-tertiary);
  text-transform: uppercase;
  margin-bottom: 4px;
}
.modal-body .paper-card .t {
  font-family: var(--io-font-mono);
  font-size: var(--io-fs-base);
  color: var(--io-text-primary);
  font-weight: 600;
  margin-bottom: 6px;
  line-height: 1.4;
}
.modal-body .paper-card .s {
  font-family: var(--io-font-pixel);
  font-size: var(--io-fs-micro);
  letter-spacing: 1.5px;
  color: var(--io-text-tertiary);
  text-transform: uppercase;
}
.modal-foot {
  display: flex; align-items: center; justify-content: flex-end; gap: 8px;
  padding: 14px 24px 18px;
  border-top: 1px solid var(--io-border);
  background: var(--io-surface-base);
}

.m-btn {
  display: inline-flex; align-items: center; gap: 8px;
  height: 38px; padding: 0 18px;
  background: var(--io-surface-raised);
  border: 1px solid var(--io-border);
  border-radius: var(--io-radius-xs);
  color: var(--io-text-secondary);
  font-family: var(--io-font-mono);
  font-size: var(--io-fs-sm);
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.12s ease, border-color 0.12s ease, color 0.12s ease, filter 0.12s ease, box-shadow 0.12s ease;
}
.m-btn:hover {
  border-color: var(--io-text-tertiary);
  color: var(--io-text-primary);
  background: var(--io-surface-overlay);
}

.m-btn.primary {
  background: linear-gradient(135deg, var(--io-accent) 0%, var(--io-accent-bright) 100%);
  border-color: transparent;
  color: var(--io-on-accent);
  box-shadow: 0 0 0 1px rgba(255,0,93,0.4), 0 0 24px var(--io-accent-glow);
}
.m-btn.primary:hover {
  color: var(--io-on-accent);
  background: linear-gradient(135deg, var(--io-accent) 0%, var(--io-accent-bright) 100%);
  filter: brightness(1.1);
  box-shadow: 0 0 0 1px rgba(255,0,93,0.6), 0 0 32px var(--io-accent-glow);
}
.m-btn.primary i { color: var(--io-on-accent); }

.m-btn kbd {
  font-family: var(--io-font-pixel);
  font-size: 9px;
  padding: 2px 6px;
  border: 1px solid var(--io-border-subtle);
  border-radius: var(--io-radius-xs);
  color: var(--io-text-tertiary);
  background: var(--io-surface-sunken);
  letter-spacing: 0.5px;
}
.m-btn.primary kbd {
  background: rgba(0,0,0,0.25);
  border-color: rgba(0,0,0,0.4);
  color: var(--io-on-accent);
}