:root {
  --bg: #0f172a;
  --surface: #1e293b;
  --surface-2: #273449;
  --border: #334155;
  --text: #e2e8f0;
  --text-dim: #94a3b8;
  --accent: #60a5fa;
  --warn: #f59e0b;
  --pane-gap: 1px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        "Noto Sans KR", "Malgun Gothic", sans-serif;
}
body { display: flex; flex-direction: column; }
main { flex: 1; min-height: 0; display: flex; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code { background: var(--surface-2); padding: 1px 5px; border-radius: 3px; font-size: 12px; }
h1 { font-size: 22px; margin: 0 0 16px; }
h2 { font-size: 14px; text-transform: uppercase; letter-spacing: .06em; margin: 0;
     color: var(--text-dim); font-weight: 600; }
.muted { color: var(--text-dim); font-size: 13px; }

.topbar {
  display: flex; align-items: center; gap: 16px;
  padding: 10px 20px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.brand { font-weight: 700; font-size: 15px; color: var(--text); display: inline-flex; align-items: center; gap: 8px; }
.brand .logo { height: 17px; width: auto; display: block; }
.back-home { margin-left: auto; color: var(--text-dim); font-size: 13px; text-decoration: none; display: inline-flex; align-items: center; gap: 6px; }
.back-home:hover { color: var(--text); }
.back-home .logo { height: 22px; width: auto; display: block; }
.crumbs { color: var(--text-dim); font-size: 13px; display: flex; gap: 8px; align-items: center; }
.crumbs .sep { opacity: .5; }

.page-narrow { max-width: 960px; margin: 0 auto; padding: 32px 20px; width: 100%; }

/* ============================ index ============================ */
.domain-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.domain-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: 8px;
  padding: 16px 18px;
}
.domain-head { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.domain-name { font-weight: 600; font-size: 16px; color: var(--text); }
.domain-desc { margin: 8px 0 12px; color: var(--text-dim); font-size: 13px; }
.pill {
  display: inline-block; padding: 2px 10px; border-radius: 999px;
  background: var(--surface-2); color: var(--text-dim); font-size: 12px;
}
.pill-warn { background: rgba(245, 158, 11, .15); color: var(--warn); }
.btn {
  display: inline-block; padding: 6px 14px; background: var(--accent);
  color: #0b1220; border-radius: 6px; font-weight: 600; font-size: 13px;
}
.btn:hover { text-decoration: none; filter: brightness(1.08); }

/* ============================ map shell: left sidebar + right 2-row ===== */
.map-shell {
  display: grid;
  grid-template-columns: 280px 1fr;
  grid-template-rows: minmax(0, 1fr) minmax(280px, 42%);
  gap: var(--pane-gap);
  background: var(--border);
  width: 100%; flex: 1; min-height: 0;
}
.pane { background: var(--surface); display: flex; flex-direction: column; min-width: 0; min-height: 0; }
.pane-left   { grid-column: 1; grid-row: 1 / 3; }
.pane-map    { grid-column: 2; grid-row: 1; padding: 0; }
.pane-detail { grid-column: 2; grid-row: 2; }

.pane-header {
  padding: 12px 16px; border-bottom: 1px solid var(--border);
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
  flex-shrink: 0;
}
.pane-header .header-meta { color: var(--text-dim); font-size: 12px; }
.pane-footer {
  padding: 10px 16px; border-top: 1px solid var(--border);
  font-size: 12px; flex-shrink: 0;
}
.pane-footer details summary { cursor: pointer; margin-top: 6px; }
.pane-footer .query-list { margin: 6px 0 0; padding-left: 18px; }
.pane-footer .query-list li { margin: 3px 0; word-break: break-all; }

/* ============================ left: clusters ============================ */
.cluster-list {
  list-style: none; margin: 0; padding: 6px 0; overflow-y: auto; flex: 1;
}
.cluster-item {
  padding: 8px 16px; cursor: pointer; display: flex; align-items: center; gap: 10px;
  border-left: 3px solid transparent;
  font-size: 13px;
}
.cluster-item:hover { background: var(--surface-2); }
.cluster-item.active { background: var(--surface-2); border-left-color: var(--accent); }
.cluster-item.dimmed { opacity: .35; }
.swatch { width: 12px; height: 12px; border-radius: 3px; flex-shrink: 0; }
.cluster-meta { display: flex; flex-direction: column; min-width: 0; flex: 1; }
.cluster-label { color: var(--text); font-weight: 600; font-size: 13px;
                 white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.cluster-sub   { color: var(--text-dim); font-size: 11.5px; line-height: 1.3;
                 margin-top: 1px; white-space: nowrap; overflow: hidden;
                 text-overflow: ellipsis; }
.cluster-count { color: var(--text-dim); font-size: 11px; margin-top: 1px; }

/* ============================ top-right: map ============================ */
.pane-map { padding: 0; display: flex; flex-direction: column; }

.date-filter {
  display: flex; align-items: center; gap: 14px;
  padding: 8px 16px; border-bottom: 1px solid var(--border);
  background: var(--surface); flex-shrink: 0;
}
.date-filter-label {
  font-size: 12px; color: var(--text-dim); white-space: nowrap;
}
.date-filter-label #date-filter-range {
  color: var(--text); font-weight: 600; margin-left: 6px;
}
.date-slider-wrap {
  position: relative; flex: 1; height: 22px; min-width: 180px;
}
.date-slider-track {
  position: absolute; left: 0; right: 0; top: 10px; height: 3px;
  background: var(--surface-2); border-radius: 2px; pointer-events: none;
}
.date-slider-fill {
  position: absolute; top: 0; bottom: 0; background: var(--accent);
  border-radius: 2px;
}
.date-slider {
  position: absolute; inset: 0; width: 100%; height: 22px;
  appearance: none; background: transparent; pointer-events: none;
}
.date-slider::-webkit-slider-thumb {
  appearance: none; pointer-events: auto;
  width: 16px; height: 16px; border-radius: 50%;
  background: var(--accent); border: 2px solid var(--surface);
  cursor: pointer; margin-top: -6px;
}
.date-slider::-moz-range-thumb {
  pointer-events: auto;
  width: 16px; height: 16px; border-radius: 50%;
  background: var(--accent); border: 2px solid var(--surface); cursor: pointer;
}
.date-reset {
  background: var(--surface-2); border: 1px solid var(--border);
  color: var(--text-dim); padding: 4px 10px; border-radius: 4px;
  font-size: 11.5px; cursor: pointer; font-family: inherit;
}
.date-reset:hover { color: var(--text); border-color: var(--accent); }

.map-stage {
  position: relative; flex: 1; overflow: hidden;
  background: #0b1220;
}
#map-bg {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: fill; pointer-events: none; user-select: none;
  opacity: 0; transition: opacity .3s;
}
#map-bg.loaded { opacity: 1; }
#map-svg { position: absolute; inset: 0; width: 100%; height: 100%; }
#map-svg circle.dot {
  cursor: pointer; stroke: #1a2533; stroke-width: 1.4;
  transition: stroke-width .1s, r .1s;
}
#map-svg circle.dot:hover { stroke: #fff; stroke-width: 2; }
#map-svg circle.dot.selected { stroke: #fff; stroke-width: 2.5; }
#map-svg circle.dot.dimmed { opacity: .22; }
#map-svg circle.dot.hover-cluster { stroke: #fff; stroke-width: 2; }

#map-svg .cluster-label-svg {
  pointer-events: none; user-select: none;
}
#map-svg .cluster-label-tag {
  font: 700 14px/1 -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  paint-order: stroke;
  stroke: rgba(255,255,255,.95); stroke-width: 3.5;
  stroke-linejoin: round;
  letter-spacing: -.02em;
}
#map-svg .cluster-label-sub {
  font: 500 10px/1 -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  paint-order: stroke;
  stroke: rgba(255,255,255,.92); stroke-width: 2.4;
  stroke-linejoin: round;
  opacity: .85;
}
#map-svg .cluster-label-svg.active .cluster-label-tag { font-size: 16px; }
#map-svg .cluster-label-svg.active .cluster-label-sub { opacity: 1; font-size: 11px; }

.cluster-hover-chip {
  position: absolute; transform: translate(-50%, -100%);
  background: var(--surface); color: var(--text);
  border: 1px solid var(--border);
  border-top-width: 3px;
  border-radius: 6px;
  padding: 6px 10px;
  display: none;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  font-size: 12px;
  pointer-events: none;
  box-shadow: 0 4px 12px rgba(0,0,0,.35);
  z-index: 5;
}
.cluster-hover-chip.visible { display: inline-flex; }
.cluster-hover-chip .chip-tag {
  display: inline-block; padding: 1px 6px; border-radius: 3px;
  color: #0b1220; font-weight: 700; font-size: 11px;
}
.cluster-hover-chip .chip-name { color: var(--text); font-weight: 500; }
.cluster-hover-chip .chip-count { color: var(--text-dim); font-size: 11px; }

/* When a cluster is hovered in the sidebar, the map background swaps to
   that cluster's KDE — animate the swap so the change reads. */
#map-bg.swap-fade { transition: opacity .15s ease-in-out; }
.map-loading {
  position: absolute; color: var(--text-dim); font-size: 13px;
}
.map-loading.hidden { display: none; }

/* ============================ bottom-right: detail ====================== */
.detail-body {
  overflow-y: auto; flex: 1; padding: 16px 20px;
  display: grid; grid-template-columns: minmax(0, 2fr) minmax(260px, 1fr);
  gap: 24px;
}
.detail-body.single-col { grid-template-columns: 1fr; }
.detail-main { min-width: 0; }
.detail-side { min-width: 0; border-left: 1px solid var(--border); padding-left: 20px; }

.detail-body h3 { margin: 0 0 10px; font-size: 17px; color: var(--text); line-height: 1.3; }
.detail-body .subtitle { color: var(--text-dim); font-size: 12.5px; margin: 0 0 14px; }
.detail-body .kv { display: grid; grid-template-columns: 80px 1fr; gap: 4px 10px;
                   font-size: 12px; margin: 0 0 14px; }
.detail-body .kv dt { color: var(--text-dim); }
.detail-body .kv dd { margin: 0; color: var(--text); word-break: break-word; }
.section-label { color: var(--text-dim); font-size: 11px; font-weight: 600;
                 text-transform: uppercase; letter-spacing: .08em;
                 margin: 0 0 8px; }
.term-tag {
  display: inline-block; padding: 2px 9px; background: var(--surface-2);
  border-radius: 999px; font-size: 11px; margin: 0 4px 4px 0; color: var(--text-dim);
}
.abstract {
  max-height: 200px; overflow-y: auto; padding: 10px 12px;
  background: var(--surface-2); border-radius: 5px; font-size: 12.5px;
  line-height: 1.6;
}
.summary-block {
  padding: 14px 18px; background: rgba(96, 165, 250, .08);
  border-left: 3px solid var(--accent); border-radius: 3px;
  font-size: 14px; line-height: 1.7; white-space: pre-wrap;
  color: var(--text);
}
.summary-meta { color: var(--text-dim); font-size: 11.5px; margin: 6px 0 0; }

.summary-tabs .tabs-row {
  display: flex; gap: 4px; margin: 0 0 8px; flex-wrap: wrap;
}
.summary-tabs .tab {
  background: var(--surface-2); border: 1px solid var(--border); color: var(--text-dim);
  padding: 4px 12px; border-radius: 999px; font-size: 11.5px; cursor: pointer;
  font-family: inherit;
}
.summary-tabs .tab:hover { color: var(--text); }
.summary-tabs .tab.active { background: rgba(96, 165, 250, .18); color: var(--accent);
                            border-color: var(--accent); }
.summary-tabs .tab-panel { display: none; }
.summary-tabs .tab-panel.active { display: block; }

/* Assignee type badge */
.atype-badge {
  display: inline-block; padding: 2px 9px; border-radius: 4px;
  font-size: 11px; font-weight: 500; margin-right: 6px; vertical-align: middle;
  border: 1px solid transparent;
}
.atype-corp       { background: rgba(96,165,250,.15);   color: #93c5fd; border-color: rgba(96,165,250,.30); }
.atype-univ       { background: rgba(168,85,247,.15);   color: #c4b5fd; border-color: rgba(168,85,247,.30); }
.atype-lab        { background: rgba(20,184,166,.15);   color: #5eead4; border-color: rgba(20,184,166,.30); }
.atype-gov        { background: rgba(245,158,11,.15);   color: #fbbf24; border-color: rgba(245,158,11,.30); }
.atype-individual { background: rgba(148,163,184,.15);  color: #cbd5e1; border-color: rgba(148,163,184,.25); }
.atype-other      { background: var(--surface-2);       color: var(--text-dim); }

/* CPC chips on patent detail */
.cpc-chips { display: flex; flex-wrap: wrap; gap: 4px; margin: 4px 0 0; }
.cpc-chip {
  display: inline-block; padding: 2px 8px; border-radius: 3px;
  background: var(--surface-2); color: var(--text); font-size: 11px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  border: 1px solid var(--border);
}
.cpc-chip:hover { border-color: var(--accent); text-decoration: none; }

/* CPC frequency bar on cluster detail */
.cpc-bar { display: grid; gap: 4px; margin: 6px 0 0; }
.cpc-row { display: grid; grid-template-columns: 56px minmax(0, 1.2fr) minmax(80px, 1fr) 30px;
           gap: 8px; align-items: center; font-size: 11.5px; }
.cpc-row .cpc-code { color: var(--text);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.cpc-row .cpc-desc { color: var(--text-dim); white-space: nowrap;
  overflow: hidden; text-overflow: ellipsis; font-size: 11px; }
.cpc-row .cpc-meter { background: var(--surface-2); height: 8px;
  border-radius: 4px; overflow: hidden; }
.cpc-row .cpc-fill { display: block; height: 100%;
  background: var(--accent); opacity: .65; }
.cpc-row .cpc-count { color: var(--text-dim); text-align: right; }

/* CPC overlap matrix */
.ovm-wrap { margin: 6px 0 0; overflow-x: auto; }
.ovm-svg { display: block; }
.ovm-svg .ovm-header {
  font: 600 10px ui-monospace, SFMono-Regular, Menlo, monospace;
  fill: var(--text-dim);
}
.ovm-svg .ovm-rowlabel {
  font: 600 10px ui-monospace, SFMono-Regular, Menlo, monospace;
  fill: var(--text-dim);
}
.ovm-svg .ovm-cell { fill: var(--surface-2); }
.ovm-svg .ovm-cell.ovm-diag { stroke: rgba(255,255,255,.18); stroke-width: 1; }
.ovm-svg .ovm-celltext {
  font: 600 11px -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  fill: var(--text); pointer-events: none;
}
.ovm-svg .ovm-celltext.ovm-celltext-on { fill: #0b1220; }
.ovm-caption { margin: 6px 0 0; font-size: 11px; }

.atype-breakdown { display: flex; gap: 4px; flex-wrap: wrap; margin: 6px 0 0; }
.atype-breakdown .count-pill {
  font-size: 11px; color: var(--text-dim); padding: 2px 8px;
  background: var(--surface-2); border-radius: 4px;
}
.patent-row .atype-badge { font-size: 10px; padding: 1px 6px; margin: 3px 0 0; }
.summary-missing {
  padding: 12px 14px; background: var(--surface-2); border-radius: 5px;
  font-size: 12.5px; line-height: 1.55; color: var(--text-dim);
}

/* patent list within cluster detail */
.patent-list {
  list-style: none; margin: 0; padding: 0; display: grid; gap: 8px;
  max-height: 100%; overflow-y: auto;
}
.patent-row {
  padding: 8px 10px; border-radius: 5px; cursor: pointer;
  background: var(--surface-2); border: 1px solid transparent;
  transition: border-color .1s;
}
.patent-row:hover { border-color: var(--accent); }
.patent-row.dimmed { opacity: .35; }
.patent-row.active {
  border-color: var(--accent);
  background: rgba(96, 165, 250, .14);
}

.back-link {
  display: inline-block;
  font-size: 12px; color: var(--accent);
  margin: 0 0 10px;
  padding: 3px 8px;
  border: 1px solid transparent;
  border-radius: 4px;
  background: var(--surface-2);
}
.back-link:hover { text-decoration: none; border-color: var(--accent); }
.patent-row .pub { font-size: 11px; color: var(--text-dim); font-family: ui-monospace, monospace; }
.patent-row .title { font-size: 12.5px; color: var(--text); line-height: 1.4; margin-top: 2px;
                     display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
                     overflow: hidden; }
.patent-row .assignee { font-size: 11px; color: var(--text-dim); margin-top: 3px; }

/* Responsive: collapse side column on narrow widths */
@media (max-width: 1000px) {
  .detail-body { grid-template-columns: 1fr; }
  .detail-side { border-left: none; padding-left: 0; border-top: 1px solid var(--border); padding-top: 16px; }
}