/* Design tokens follow the other DSDD tools (coreFold); the accent matches the tree's class A blue */
:root {
   color-scheme: light;
   --bg: #f4f5f7;
   --panel: #ffffff;
   --surface-2: #f8f9fb;
   --ink: #12141a;
   --muted: #5c6370;
   --border: #e2e6ee;
   --border-strong: #cfd5e0;
   --accent: #3460b0;
   --accent-dark: #2b4c8c;
   --accent-soft: #e8eef9;
   --bad: #b42318;
   --warn: #b45309;
   --ok: #067647;
   --shadow: 0 1px 2px rgba(16, 24, 40, .06);
   --shadow-pop: 0 8px 24px rgba(16, 24, 40, .12);
   --radius: 6px;
   --radius-card: 10px;
   --font: "Segoe UI", "Helvetica Neue", system-ui, sans-serif;
   --mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
   --ease: .12s ease;
   --sidebar: 520px;
   --gap: 10px;
}

* { box-sizing: border-box; }

html, body {
   margin: 0;
   height: 100%;
   font: 14px/1.4 var(--font);
   color: var(--ink);
   background: var(--bg);
}

body {
   display: flex;
   flex-direction: column;
}

button, .button {
   font: inherit;
   font-size: 12.25px;
   padding: 4.9px 9.1px;
   border: 1px solid var(--border);
   border-radius: var(--radius);
   background: var(--panel);
   color: var(--ink);
   cursor: pointer;
   white-space: nowrap;
   transition: background var(--ease), border-color var(--ease), opacity var(--ease);
}
button:hover, .button:hover { border-color: var(--border-strong); background: var(--surface-2); }
button:disabled { opacity: .45; cursor: default; }
button:disabled:hover { background: var(--panel); border-color: var(--border); }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
button.primary:hover { background: var(--accent-dark); border-color: var(--accent-dark); }
button.icon { width: 30px; padding: 4.9px 0; font-size: 15px; line-height: 1; }
button.small { font-size: 11px; padding: 2px 7px; }

input, select, textarea {
   font: inherit;
   font-size: 12.25px;
   color: var(--ink);
   border: 1px solid var(--border);
   border-radius: var(--radius);
   padding: 5px 8px;
   background: var(--panel);
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }
input.invalid { border-color: var(--bad); }
input[type=color] { width: 44px; height: 26px; padding: 1px 2px; }
input[type=checkbox] { accent-color: var(--accent); }
code { font-family: var(--mono); background: var(--surface-2); border: 1px solid var(--border); padding: 0 4px; border-radius: 4px; font-size: 11.5px; }
a { color: var(--accent); }

[hidden] { display: none !important; }

/* ---------- top bar ---------- */
.topbar {
   display: flex;
   align-items: center;
   gap: 16px;
   height: 52px;
   padding: 6px 12px;
   background: var(--panel);
   border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 9px; width: calc(var(--sidebar) - 12px); min-width: 0; }
.brand-logo { width: 26px; height: auto; flex-shrink: 0; }
.brand-copy { display: flex; flex-direction: column; line-height: 1.25; min-width: 0; }
.brand-copy strong { font-size: 12.9px; font-weight: 600; }
.brand-copy span { font-size: 10.1px; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.search { position: relative; flex: 1; max-width: 520px; }
.search input { width: 100%; padding: 6px 10px; background: var(--surface-2); }
.search input:focus { background: var(--panel); }
#search-results {
   position: absolute; z-index: 30; left: 0; right: 0; top: 100%;
   margin: 4px 0 0; padding: 4px 0; list-style: none;
   background: #fff; border: 1px solid var(--border); border-radius: 6px; box-shadow: 0 6px 20px rgba(0,0,0,.12);
}
#search-results li { padding: 5px 10px; cursor: pointer; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
#search-results li span { color: var(--muted); }
#search-results li.active, #search-results li:hover { background: var(--accent-soft); }
#search-results li.none { color: var(--muted); cursor: default; }
.actions { display: flex; gap: 6px; margin-left: auto; align-items: center; }
.menu { position: relative; }
.menu-items {
   position: absolute; right: 0; top: calc(100% + 4px); z-index: 30; min-width: 230px;
   background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 4px; box-shadow: var(--shadow-pop);
}
.menu-items button { display: block; width: 100%; text-align: left; border: 0; }
.menu-items hr { border: 0; border-top: 1px solid var(--border); margin: 4px 0; }

/* ---------- layout: sidebar and map are cards on the page background ---------- */
main { flex: 1; display: flex; gap: var(--gap); padding: var(--gap); min-height: 0; }

#sidebar, #map-area {
   background: var(--panel);
   border: 1px solid var(--border);
   border-radius: var(--radius-card);
   box-shadow: var(--shadow);
}
#sidebar {
   width: calc(var(--sidebar) - var(--gap));
   flex-shrink: 0;
   display: flex;
   flex-direction: column;
   min-height: 0;
   overflow: hidden;
}
.tabs { display: flex; gap: 4px; padding: 8px 12px; border-bottom: 1px solid var(--border); }
.tabs button { border: 1px solid transparent; background: none; color: var(--muted); font-weight: 600; padding: 4.9px 12px; }
.tabs button:hover { background: var(--surface-2); border-color: var(--border); }
.tabs button.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.panel { flex: 1; overflow-y: auto; padding: 4px 16px 16px; }
.panel h3 { font-size: 12.9px; font-weight: 600; margin: 16px 0 6px; }
.panel h3.with-tools { display: flex; justify-content: space-between; align-items: center; }
.panel h3 .small { font-weight: 400; font-size: 12px; color: var(--muted); }

#quick-input { width: 100%; height: 120px; resize: vertical; font-family: var(--mono); font-size: 12px; }
.button-row { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 6px; }
.file { position: relative; overflow: hidden; display: inline-block; }
.file input { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 8px; }
#dataset { width: 100%; }
.dataset-options { margin-top: 8px; }
.dataset-options label { display: flex; flex-direction: column; gap: 3px; margin-top: 6px; font-size: 12px; color: var(--muted); }
.dataset-options select { width: 100%; }

.messages p { margin: 6px 0; font-size: 12px; }
.messages ul.errors { margin: 6px 0; padding-left: 18px; color: var(--bad); font-size: 12px; }
.ok { color: var(--ok); }
.bad { color: var(--bad); }
.warn { color: var(--warn); }
.muted { color: var(--muted); }
.hint { color: var(--muted); font-size: 12px; margin: 6px 0; }
.hint.warn { color: var(--warn); }

.help-box { margin-top: 8px; font-size: 12px; background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius); padding: 6px 10px; }
.help-box summary { cursor: pointer; font-weight: 600; }
.syntax { border-collapse: collapse; }
.syntax td { padding: 2px 6px 2px 0; vertical-align: top; }
.syntax td:first-child { white-space: nowrap; }

/* ---------- table ---------- */
#grid { border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
#grid .handsontable { font-family: var(--font); font-size: 12px; color: var(--ink); }
#grid .handsontable th { background: var(--surface-2); color: var(--muted); font-weight: 600; }
#grid .handsontable td, #grid .handsontable th { border-color: var(--border); }
#grid .handsontable td:first-of-type { font-family: var(--mono); }
.handsontable td.match { font-size: 11px; }
.handsontable td.match.ok { color: var(--ok); }
.handsontable td.match.bad { color: var(--bad); background: #fef3f2; }
.handsontable td.match.warn { color: var(--warn); background: #fffaeb; }
.handsontable td.cell-invalid { background: #fef3f2; color: var(--bad); }
.swatch { display: inline-block; width: 11px; height: 11px; border-radius: 2px; border: 1px solid rgba(0,0,0,.25); margin-right: 5px; vertical-align: -1px; }

/* ---------- style panel ---------- */
fieldset { border: 1px solid var(--border); border-radius: var(--radius-card); margin: 12px 0; padding: 6px 12px 10px; }
legend { font-weight: 600; font-size: 12.9px; padding: 0 4px; }
fieldset label { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin: 6px 0; }
fieldset label > select, fieldset label > input[type=text] { width: 230px; }
fieldset label > input[type=number] { width: 80px; }
fieldset label > input[type=range] { flex: 1; max-width: 190px; margin-left: auto; }
fieldset label output { width: 30px; text-align: right; font-size: 12px; color: var(--muted); }
fieldset label.check { justify-content: flex-start; }
.pair { display: flex; align-items: center; gap: 4px; }
.pair input { width: 70px; }
.row { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin: 8px 0 6px; }
fieldset .sub { margin: 0 0 4px 10px; padding-left: 10px; border-left: 2px solid var(--accent-soft); }
.palette-row { display: flex; align-items: center; gap: 8px; width: 230px; }
.palette-row label { margin: 0; gap: 4px; font-size: 12px; color: var(--muted); }
.palette-preview { flex: 1; height: 12px; border-radius: 3px; border: 1px solid var(--border); }

/* two or three mutually exclusive options */
.segmented { display: inline-flex; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface-2); padding: 2px; gap: 2px; }
.segmented button { border: 0; background: none; color: var(--muted); padding: 3px 10px; font-size: 12px; border-radius: 4px; }
.segmented button:hover { background: var(--panel); color: var(--ink); }
.segmented button.active { background: var(--panel); color: var(--accent); font-weight: 600; box-shadow: 0 0 0 1px var(--border-strong); cursor: default; }

/* collapsible groups for less common settings */
details.advanced { margin: 8px 0 2px; }
details.advanced > summary { cursor: pointer; font-size: 12px; color: var(--muted); list-style: none; user-select: none; }
details.advanced > summary::-webkit-details-marker { display: none; }
details.advanced > summary::before { content: "▸"; display: inline-block; width: 12px; transition: transform var(--ease); }
details.advanced[open] > summary::before { transform: rotate(90deg); }
details.advanced > summary:hover { color: var(--ink); }
details.advanced[open] > summary { margin-bottom: 2px; }
details.advanced label { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin: 6px 0; }
details.advanced label > input[type=range] { flex: 1; max-width: 190px; margin-left: auto; }
details.advanced label output { width: 30px; text-align: right; font-size: 12px; color: var(--muted); }
details.advanced.boxed { border: 1px solid var(--border); border-radius: var(--radius-card); padding: 8px 12px; margin-top: 12px; }
#reset-style { color: var(--muted); }

.panel h3 .tools { display: flex; align-items: center; gap: 6px; }
.panel h3 .tools label { display: flex; align-items: center; gap: 4px; margin-right: 4px; }
.next-step { display: flex; justify-content: flex-end; margin-top: 10px; }

.class-row { display: flex; align-items: center; gap: 8px; padding: 6px 4px; border-bottom: 1px solid var(--border); }
.class-row .class-name { flex: 1; font-weight: 500; }
.class-row .count { color: var(--muted); font-size: 12px; width: 32px; text-align: right; }
.class-row.off .class-name, .class-row.off .count { opacity: .4; text-decoration: line-through; }

.cite { font-size: 10.9px; color: var(--muted); padding: 8px 16px; border-top: 1px solid var(--border); background: var(--surface-2); }

/* ---------- map ---------- */
#map-area { flex: 1; position: relative; min-width: 0; overflow: hidden; }
#map, #map svg { width: 100%; height: 100%; display: block; }
#map svg { cursor: grab; touch-action: none; user-select: none; }
#map svg.panning { cursor: grabbing; }
#map .hits circle { cursor: pointer; }
#map .label { cursor: move; }
#map .leaders { pointer-events: none; }
#map .pulse { fill: none; stroke: #e6332a; stroke-width: 3; animation: pulse 0.9s ease-out 3; }
@keyframes pulse { from { r: 30; stroke-opacity: 1; } to { r: 8; stroke-opacity: .2; } }

.zoom-controls { position: absolute; right: 14px; top: 14px; display: flex; flex-direction: column; gap: 4px; }
.zoom-controls button { width: 32px; height: 32px; padding: 0; font-size: 17px; box-shadow: var(--shadow); }

#empty-hint {
   position: absolute; left: 50%; bottom: 24px; transform: translateX(-50%);
   background: rgba(255,255,255,.96); border: 1px solid var(--border); border-radius: var(--radius-card);
   padding: 12px 18px; box-shadow: var(--shadow-pop); text-align: center; font-size: 13px;
}
#empty-hint p { margin: 0 0 8px; }
#empty-hint .chips { justify-content: center; margin: 0; }

#tooltip {
   position: absolute; z-index: 20; pointer-events: none; max-width: 280px;
   background: rgba(18, 20, 26, .92); color: #fff; padding: 6px 9px; border-radius: var(--radius); font-size: 12px;
}
#tooltip .muted { color: #b8c0cc; }

#info-card {
   position: absolute; z-index: 15; left: 14px; top: 14px; width: 330px; max-height: calc(100% - 28px); overflow-y: auto;
   background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius-card); padding: 12px 14px; box-shadow: var(--shadow-pop);
}
#info-card h4 { margin: 0; font-size: 17.5px; font-weight: 600; }
#info-card .subtitle { color: var(--muted); font-size: 12px; margin-bottom: 8px; }
#info-card dl { display: grid; grid-template-columns: auto 1fr; gap: 2px 10px; font-size: 12px; margin: 0 0 8px; }
#info-card dt { color: var(--muted); }
#info-card dd { margin: 0; }
#info-card p { font-size: 12px; margin: 6px 0; }
#info-card .links { display: flex; flex-wrap: wrap; gap: 4px 12px; font-size: 12px; margin: 8px 0; }
#info-card .close { position: absolute; right: 8px; top: 6px; border: 0; font-size: 18px; padding: 0 6px; background: none; }

/* ---------- modal and toast ---------- */
#modal { position: fixed; inset: 0; z-index: 50; background: rgba(18, 20, 26, .4); display: flex; align-items: center; justify-content: center; }
.modal-box { position: relative; width: min(560px, 92vw); background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius-card); padding: 21px 21px 16px; box-shadow: var(--shadow-pop); }
.modal-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.modal-brand img { width: 40px; height: auto; }
.modal-brand strong { display: block; font-size: 17.5px; font-weight: 600; }
.modal-brand span { font-size: 10.9px; color: var(--muted); }
.modal-box h2 { margin: 0 0 10px; font-size: 17.5px; font-weight: 600; }
.modal-close { position: absolute; right: 10px; top: 8px; border: 0; font-size: 22px; background: none; }
.modal-nav { display: flex; align-items: center; gap: 8px; justify-content: flex-end; margin-top: 18px; }
#modal-steps { margin-right: auto; color: var(--muted); font-size: 12px; }

#toast {
   position: fixed; z-index: 60; left: 50%; bottom: 24px; transform: translateX(-50%);
   background: var(--ink); color: #fff; padding: 8px 16px; border-radius: var(--radius); box-shadow: var(--shadow-pop); font-size: 12.25px;
}

@media (max-width: 900px) {
   :root { --sidebar: 100%; }
   main { flex-direction: column; }
   #sidebar { width: 100%; max-height: 50vh; }
   .brand-copy span { display: none; }
   .brand { width: auto; }
   #map-area { min-height: 60vh; }
}