:root {
  --bg: #0b0d12;
  --panel: #141820;
  --panel-hover: #1c2230;
  --text: #e6e8ee;
  --muted: #9aa0ad;
  --accent: #ff6a00;
  --border: #242a36;
  --success: #33c26f;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--text);
  background: var(--bg);
}

body {
  display: grid;
  grid-template-columns: 330px 1fr;
  height: 100vh;
}

#sidebar {
  background: var(--panel);
  border-right: 1px solid var(--border);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  overflow-y: auto;
}

#sidebar header h1 { font-size: 19px; margin: 0; letter-spacing: -0.01em; }
#sidebar header .tagline { margin: 3px 0 0; color: var(--muted); font-size: 12px; }

.pane h2 {
  margin: 0 0 8px;
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}
.pane-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}
.pane-header h2 { margin: 0; }
.toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: var(--muted);
  cursor: pointer;
  user-select: none;
}
.toggle input { margin: 0; accent-color: var(--accent); }
.toggle:hover { color: var(--text); }

.stack { display: flex; flex-direction: column; gap: 4px; }

/* Collapsible category groups in the Reference overlays pane */
.layer-group { border-top: 1px solid var(--border); }
.layer-group:first-child { border-top: 0; }
.layer-group summary {
  cursor: pointer;
  padding: 8px 6px 6px;
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
  transition: color 120ms ease;
}
.layer-group summary::-webkit-details-marker { display: none; }
.layer-group summary::before {
  content: "▸";
  display: inline-block;
  margin-right: 6px;
  font-size: 9px;
  color: var(--muted);
  transition: transform 120ms ease;
}
.layer-group[open] > summary::before { transform: rotate(90deg); }
.layer-group summary:hover { color: var(--text); }
.layer-group .cat-name { flex: 1; }
.layer-group .cat-meta { color: var(--muted); font-variant-numeric: tabular-nums; font-size: 10px; }
.layer-group .cat-meta .cat-active { color: var(--accent); font-weight: 700; }
.layer-group-body { padding: 0 0 6px; display: flex; flex-direction: column; gap: 2px; }

/* Variable picker */
.picker {
  width: 100%;
  background: #0a0c10;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 9px 10px;
  font-size: 13.5px;
  font-family: inherit;
  cursor: pointer;
}
.picker:focus { outline: none; border-color: var(--accent); }

.summary {
  margin-top: 8px;
  font-size: 11px;
  color: var(--muted);
  line-height: 1.5;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 2px 10px;
}
.summary .k { color: var(--muted); }
.summary .v { color: var(--text); font-variant-numeric: tabular-nums; }

/* Reference layer rows */
.layer {
  display: grid;
  grid-template-columns: 16px 10px 1fr auto;
  align-items: center;
  gap: 8px;
  padding: 5px 7px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 12.5px;
  user-select: none;
}
.layer:hover { background: var(--panel-hover); }
.layer input[type="checkbox"] { margin: 0; accent-color: var(--accent); }
.layer .dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }
.layer .label-text { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.layer .count { color: var(--muted); font-size: 10.5px; font-variant-numeric: tabular-nums; }

/* Deal cards */
.deal {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 7px 10px;
  cursor: pointer;
  color: var(--text);
  font-family: inherit;
  font-size: 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  width: 100%;
}
.deal:hover { background: var(--panel-hover); }
.deal.active {
  border-color: var(--accent);
  background: rgba(255, 106, 0, 0.08);
  color: var(--text);
}
.deal.active::after {
  content: "click to close";
  color: var(--muted);
  font-size: 10px;
  margin-left: auto;
}
.deal.active .deal-pop { display: none; }
.deal-name { font-weight: 600; }
.deal-pop { color: var(--muted); font-size: 11px; font-variant-numeric: tabular-nums; }

.empty {
  color: var(--muted);
  padding: 10px;
  border: 1px dashed var(--border);
  border-radius: 6px;
  line-height: 1.5;
}
.empty.small { font-size: 11.5px; padding: 8px 10px; }
.empty code {
  background: #0a0c10;
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 11px;
  display: inline-block;
  margin-top: 4px;
}

#sidebar footer small {
  color: var(--muted);
  font-size: 10.5px;
  line-height: 1.5;
  display: block;
}

/* Importer panel */
.dropzone {
  border: 2px dashed var(--border);
  border-radius: 10px;
  padding: 14px 10px;
  text-align: center;
  transition: background 120ms ease, border-color 120ms ease;
  cursor: pointer;
}
.dropzone:hover,
.dropzone.drag-over {
  background: rgba(255, 106, 0, 0.06);
  border-color: var(--accent);
}
.dropzone-label {
  color: var(--muted);
  font-size: 11.5px;
  line-height: 1.5;
  margin-bottom: 8px;
}
.dropzone-label code {
  background: #0a0c10;
  padding: 1px 4px;
  border-radius: 3px;
  font-size: 11px;
}
.btn-browse {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  font-family: inherit;
  font-size: 12px;
  padding: 5px 12px;
  border-radius: 6px;
  cursor: pointer;
}
.btn-browse:hover { background: var(--panel-hover); border-color: var(--accent); }

.url-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 6px;
  margin-top: 8px;
}
.url-row .picker { padding: 7px 9px; font-size: 12px; }
.btn-go {
  background: var(--accent);
  color: #0b0d12;
  border: none;
  font-family: inherit;
  font-weight: 600;
  font-size: 12px;
  padding: 7px 14px;
  border-radius: 6px;
  cursor: pointer;
}
.btn-go:disabled { opacity: 0.5; cursor: not-allowed; }

.status {
  margin-top: 6px;
  font-size: 11px;
  color: var(--muted);
  min-height: 14px;
  line-height: 1.4;
}
.status.ok { color: var(--success); }
.status.err { color: #ef4444; }

/* Imported layer rows */
.import-row {
  display: grid;
  grid-template-columns: 16px 10px 1fr auto auto;
  align-items: center;
  gap: 8px;
  padding: 5px 7px;
  border-radius: 6px;
  font-size: 12.5px;
  user-select: none;
}
.import-row:hover { background: var(--panel-hover); }
.import-row input[type="checkbox"] { margin: 0; accent-color: var(--accent); }
.import-row .dot { width: 10px; height: 10px; border-radius: 50%; }
.import-row .label-text { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.import-row .count { color: var(--muted); font-size: 10.5px; font-variant-numeric: tabular-nums; }
.import-row .btn-remove {
  background: transparent;
  border: none;
  color: var(--muted);
  cursor: pointer;
  padding: 0 2px;
  font-size: 14px;
  line-height: 1;
}
.import-row .btn-remove:hover { color: #ef4444; }

main { position: relative; }
#map { position: absolute; inset: 0; }

/* Legend */
#legend {
  position: absolute;
  bottom: 24px;
  left: 16px;
  background: rgba(20, 24, 32, 0.96);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(8px);
  z-index: 5;
  min-width: 260px;
}
#legend.hidden { display: none; }
.legend-title { font-size: 12px; font-weight: 600; margin-bottom: 6px; }
.legend-stops { display: flex; flex-direction: column; gap: 3px; }
.legend-row { display: grid; grid-template-columns: 16px 1fr; gap: 8px; align-items: center; font-size: 11px; color: var(--muted); font-variant-numeric: tabular-nums; }
.legend-swatch { width: 16px; height: 10px; border-radius: 2px; border: 1px solid rgba(255,255,255,0.1); }

/* Feature info popup */
#feature-info {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 320px;
  background: rgba(20, 24, 32, 0.96);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
  backdrop-filter: blur(8px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  z-index: 5;
  max-height: 80vh;
  overflow-y: auto;
}
#feature-info.hidden { display: none; }
.feature-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; gap: 10px; }
.feature-title { font-size: 12px; color: var(--muted); }
.feature-close {
  background: transparent;
  color: var(--muted);
  border: none;
  font-size: 18px;
  cursor: pointer;
  padding: 0;
  line-height: 1;
}
.feature-close:hover { color: var(--text); }
.feature-fields {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4px 12px;
  margin: 0;
  font-size: 12px;
}
.feature-fields dt { color: var(--muted); }
.feature-fields dd {
  margin: 0;
  font-variant-numeric: tabular-nums;
  text-align: right;
}
.feature-fields .highlight { color: var(--accent); font-weight: 600; }

@media (max-width: 700px) {
  body { grid-template-columns: 1fr; grid-template-rows: auto 1fr; }
  #sidebar { max-height: 48vh; border-right: 0; border-bottom: 1px solid var(--border); }
  #feature-info { width: calc(100% - 32px); }
}