:root {
  color-scheme: light;
  --bg: #f5f7f9;
  --panel: #ffffff;
  --ink: #17212b;
  --muted: #667482;
  --subtle: #8a97a4;
  --line: #e3e8ed;
  --line-strong: #ccd5de;
  --accent: #175cd3;
  --accent-hover: #144fb6;
  --accent-soft: #eef4ff;
  --danger: #b42318;
  --danger-soft: #fff1f0;
  --success: #067647;
  --success-soft: #ecfdf3;
  --warning: #b54708;
  --warning-soft: #fffaeb;
  --marker: #175cd3;
  --matched: #067647;
  --approx: #dc6803;
  --shadow-sm: 0 1px 2px rgba(16, 24, 40, .05);
  --shadow-md: 0 10px 30px rgba(16, 24, 40, .09);
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
}
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }
button:disabled { cursor: not-allowed; opacity: .48; }
.hidden { display: none !important; }

.appShell { min-height: 100vh; display: grid; grid-template-rows: 58px 1fr; }
.topbar {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 16px;
  padding: 0 20px;
  background: #111a22;
  color: #fff;
  border-bottom: 1px solid rgba(255,255,255,.08);
  position: relative;
  z-index: 1100;
}
.brand, .backLink { color: #fff; text-decoration: none; }
.brand { display: inline-flex; align-items: center; gap: 9px; width: fit-content; font-weight: 760; letter-spacing: -.01em; }
.brandMark { width: 25px; height: 25px; display: grid; place-items: center; border-radius: 7px; background: rgba(255,255,255,.11); }
.topbarTitle { color: #d9e1e8; font-size: 13px; font-weight: 650; }
.backLink { justify-self: end; color: #bac5ce; font-size: 12px; font-weight: 600; }
.backLink:hover { color: #fff; }

.workspace { min-height: 0; display: grid; grid-template-columns: 408px minmax(0, 1fr); }
.sidebar {
  min-height: 0;
  overflow-y: auto;
  padding: 22px 20px 28px;
  background: var(--panel);
  border-right: 1px solid var(--line);
  position: relative;
  z-index: 800;
  scrollbar-width: thin;
}
.mapWrap { min-width: 0; min-height: 0; position: relative; }
#map { width: 100%; height: calc(100vh - 58px); background: #dfe6ea; }

.intro { margin-bottom: 17px; }
.eyebrow { color: var(--accent); font-size: 10.5px; font-weight: 800; text-transform: uppercase; letter-spacing: .1em; margin-bottom: 8px; }
h1 { margin: 0 0 8px; font-size: 25px; line-height: 1.12; letter-spacing: -.035em; }
.intro p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.55; }

.modeTabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #f1f4f6;
  margin-bottom: 10px;
}
.modeTab {
  min-width: 0;
  display: grid;
  grid-template-columns: 19px 1fr;
  align-items: center;
  gap: 7px;
  border: 0;
  border-radius: 10px;
  padding: 9px 10px;
  background: transparent;
  text-align: left;
  color: #53616e;
}
.modeTab.active { background: #fff; color: var(--ink); box-shadow: var(--shadow-sm); }
.modeTab .modeIcon { color: var(--accent); font-size: 11px; text-align: center; }
.modeTab .ringIcon { font-size: 20px; line-height: 12px; }
.modeTab strong { display: block; font-size: 11.5px; line-height: 1.2; }
.modeTab small { display: block; margin-top: 2px; font-size: 9.5px; color: var(--subtle); }

.dataBar {
  display: grid;
  grid-template-columns: 9px 1fr;
  gap: 9px;
  align-items: start;
  padding: 8px 10px;
  margin-bottom: 12px;
  border-radius: 10px;
  background: #f8fafb;
  border: 1px solid var(--line);
}
.dataDot { width: 8px; height: 8px; margin-top: 4px; border-radius: 50%; background: var(--subtle); }
.dataDot.loading { animation: pulse 1.4s infinite ease-in-out; }
.dataDot.ready { background: var(--success); }
.dataDot.error { background: var(--danger); }
.dataBar strong { display: block; font-size: 10.5px; line-height: 1.3; }
.dataBar span:not(.dataDot) { display: block; margin-top: 2px; color: var(--subtle); font-size: 9.5px; line-height: 1.3; }
@keyframes pulse { 50% { opacity: .35; } }

.panel {
  margin-bottom: 12px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 15px;
  background: #fff;
  box-shadow: 0 4px 14px rgba(16,24,40,.03);
}
.panelHeader { display: flex; align-items: flex-start; justify-content: space-between; gap: 10px; margin-bottom: 12px; }
.panelHeader > div { display: flex; align-items: flex-start; gap: 8px; }
.panelHeader h2 { margin: 0; font-size: 14px; line-height: 1.25; }
.panelHeader p { margin: 2px 0 0; color: var(--subtle); font-size: 10.5px; line-height: 1.3; }
.step {
  flex: 0 0 23px;
  width: 23px;
  height: 23px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 10.5px;
  font-weight: 800;
}
.textButton { border: 0; background: transparent; color: var(--muted); padding: 3px 0; font-size: 11px; font-weight: 650; }
.textButton:hover { color: var(--ink); }

.field { display: grid; gap: 6px; margin-bottom: 10px; }
.field > span { font-size: 11.5px; font-weight: 720; }
.field small { color: var(--subtle); font-size: 10.5px; line-height: 1.35; }
textarea {
  width: 100%;
  min-height: 126px;
  resize: vertical;
  outline: none;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  padding: 10px 11px;
  background: #fff;
  color: var(--ink);
  font-size: 12px;
  line-height: 1.5;
  font-variant-numeric: tabular-nums;
}
textarea:focus { border-color: #84adff; box-shadow: 0 0 0 3px rgba(23,92,211,.09); }

.uploadBox {
  display: grid;
  grid-template-columns: 30px 1fr;
  gap: 9px;
  align-items: center;
  margin-bottom: 10px;
  padding: 9px 10px;
  border: 1px dashed #b9c5d0;
  border-radius: 10px;
  background: #fafcfd;
  cursor: pointer;
}
.uploadBox:hover { border-color: #8da1b2; background: #f7f9fb; }
.uploadBox input { display: none; }
.uploadIcon { width: 30px; height: 30px; display: grid; place-items: center; border-radius: 8px; background: #eef2f6; color: #566575; font-weight: 800; }
.uploadText strong { display: block; font-size: 11.5px; }
.uploadText small { display: block; margin-top: 2px; color: var(--subtle); font-size: 9.5px; line-height: 1.3; }

.primaryButton, .secondaryButton {
  width: 100%;
  min-height: 39px;
  padding: 8px 11px;
  border-radius: 10px;
  font-size: 11.5px;
  font-weight: 740;
  transition: background .15s ease, border-color .15s ease, transform .05s ease;
}
.primaryButton { border: 1px solid var(--accent); background: var(--accent); color: #fff; }
.primaryButton:hover:not(:disabled) { background: var(--accent-hover); border-color: var(--accent-hover); }
.primaryButton:active:not(:disabled), .secondaryButton:active:not(:disabled) { transform: translateY(1px); }
.secondaryButton { border: 1px solid var(--line-strong); background: #fff; color: #344350; }
.secondaryButton:hover:not(:disabled) { background: #f8fafb; border-color: #aebbc7; }
.buttonStack { display: grid; gap: 7px; }

.countBadge { flex: 0 0 auto; border-radius: 999px; padding: 4px 8px; background: var(--accent-soft); color: var(--accent); font-size: 10px; font-weight: 800; white-space: nowrap; }
.statsGrid { display: grid; grid-template-columns: repeat(3,1fr); gap: 6px; margin-bottom: 10px; }
.statsGrid.four { grid-template-columns: repeat(4,1fr); }
.statsGrid > div { min-width: 0; padding: 8px; border: 1px solid var(--line); border-radius: 10px; background: #f8fafb; }
.statsGrid strong { display: block; font-size: 16px; line-height: 1.1; font-variant-numeric: tabular-nums; }
.statsGrid span { display: block; margin-top: 3px; color: var(--subtle); font-size: 8.8px; line-height: 1.15; }

.emptyState {
  display: grid;
  justify-items: center;
  padding: 18px 12px 10px;
  text-align: center;
  color: var(--muted);
}
.emptyState.compact { padding: 13px 10px 5px; }
.emptyIcon { width: 34px; height: 34px; display: grid; place-items: center; margin-bottom: 8px; border-radius: 10px; background: #f2f5f7; color: #71808e; font-size: 17px; }
.emptyIcon.ringLarge { font-size: 30px; line-height: 20px; }
.emptyState strong { color: #455461; font-size: 11.5px; }
.emptyState p { max-width: 250px; margin: 4px 0 0; color: var(--subtle); font-size: 10px; line-height: 1.4; }

.workflowSteps { display: grid; gap: 7px; margin-bottom: 10px; }
.workflowSteps > div { display: grid; grid-template-columns: 21px 1fr; gap: 8px; align-items: center; }
.workflowSteps > div > span { width: 21px; height: 21px; display: grid; place-items: center; border-radius: 50%; background: #f0f3f6; color: #5c6976; font-size: 9px; font-weight: 800; }
.workflowSteps p { margin: 0; color: var(--muted); font-size: 10.5px; }
.workflowSteps strong { color: #344350; }
.hintCard { display: grid; gap: 3px; margin: 10px 0; padding: 9px 10px; border: 1px solid #f2d19b; border-radius: 10px; background: var(--warning-soft); }
.hintCard strong { color: #8b4800; font-size: 10.5px; }
.hintCard span { color: #875c25; font-size: 9.5px; line-height: 1.4; }

.postcodeDetails { margin-top: 10px; border-top: 1px solid var(--line); padding-top: 9px; }
.postcodeDetails summary { cursor: pointer; color: #465563; font-size: 10.5px; font-weight: 720; }
.postcodeList { display: flex; flex-wrap: wrap; gap: 5px; max-height: 190px; overflow: auto; padding-top: 9px; }
.postcodeList.empty { display: block; color: var(--subtle); font-size: 10px; }
.postcodeChip { border-radius: 999px; padding: 4px 7px; background: #eef2f5; color: #3f4e5a; font-size: 10px; font-variant-numeric: tabular-nums; }

.qualityList { display: grid; gap: 5px; max-height: 220px; overflow: auto; padding-top: 9px; }
.qualityRow { display: grid; grid-template-columns: 58px 1fr auto; gap: 7px; align-items: center; padding: 6px 7px; border: 1px solid var(--line); border-radius: 8px; }
.qualityRowButton { width: 100%; color: inherit; text-align: left; cursor: pointer; }
.qualityRowButton:hover { border-color: #b7c3ce; background: #f9fbfc; }
.qualityCode { font-size: 10.5px; font-weight: 760; font-variant-numeric: tabular-nums; }
.qualityPlace { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--muted); font-size: 9.5px; }
.qualityBadge { border-radius: 999px; padding: 3px 6px; font-size: 8.5px; font-weight: 750; white-space: nowrap; }
.qualityBadge.good { background: var(--success-soft); color: var(--success); }
.qualityBadge.fallback { background: #f2f4f7; color: #5d6975; }
.qualityBadge.low { background: var(--warning-soft); color: var(--warning); }
.qualityBadge.missing { background: var(--danger-soft); color: var(--danger); }

.circleList { display: grid; gap: 6px; margin-bottom: 10px; }
.circleItem { display: grid; grid-template-columns: 1fr auto; gap: 8px; align-items: center; padding: 8px 9px; border: 1px solid var(--line); border-radius: 9px; background: #fff; }
.circleItem:hover { border-color: #bdc8d2; }
.circleItemMain { cursor: pointer; min-width: 0; }
.circleItem strong { display: block; font-size: 10.8px; }
.circleItem span { display: block; margin-top: 2px; color: var(--subtle); font-size: 9.3px; }
.circleItem button { border: 0; background: transparent; color: var(--danger); font-size: 9.5px; font-weight: 700; padding: 5px; }
.resultActions { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.resultActions .secondaryButton:last-child { grid-column: 1/-1; }

.status { min-height: 18px; padding: 2px 2px 0; color: var(--muted); font-size: 10.5px; line-height: 1.4; }
.status.ok { color: var(--success); }
.status.error { color: var(--danger); }
.footnote { margin: 8px 2px 0; color: var(--subtle); font-size: 9.5px; line-height: 1.45; }

.mapLegend {
  position: absolute;
  left: 14px;
  bottom: 14px;
  z-index: 700;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 10px;
  border: 1px solid rgba(211,220,228,.9);
  border-radius: 10px;
  background: rgba(255,255,255,.95);
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(8px);
  color: #455461;
  font-size: 9.5px;
}
.legendDot { display: inline-block; width: 8px; height: 8px; margin-right: 4px; border-radius: 50%; vertical-align: -1px; }
.legendDot.precise { background: var(--marker); }
.legendDot.approx { background: #fff; border: 2px solid var(--approx); }
.legendDot.matched { background: var(--matched); }
.legendRing { display: inline-block; width: 12px; height: 12px; margin-right: 4px; border: 2px solid var(--accent); border-radius: 50%; vertical-align: -2px; }

.leaflet-control-zoom a { color: #33424f; }
.leaflet-control-container .leaflet-pm-toolbar .button-container a { background-color: #fff; }
.leaflet-popup-content { margin: 11px 13px; line-height: 1.45; font-size: 11px; }
.popupTitle { font-weight: 800; font-size: 12px; }
.popupMeta { margin-top: 3px; color: #667482; }
.popupQuality { display: inline-block; margin-top: 6px; padding: 3px 6px; border-radius: 999px; background: #f2f4f7; color: #5d6975; font-size: 9px; font-weight: 700; }

@media (max-width: 900px) {
  .appShell { grid-template-rows: 52px 1fr; }
  .topbar { grid-template-columns: 1fr auto; padding: 0 12px; }
  .topbarTitle { display: none; }
  .workspace { display: flex; flex-direction: column; }
  .sidebar { order: 1; max-height: 49vh; padding: 13px 12px 18px; border-right: 0; border-bottom: 1px solid var(--line); }
  .mapWrap { order: 2; min-height: 51vh; }
  #map { height: 51vh; min-height: 390px; }
  h1 { font-size: 21px; }
  .intro { margin-bottom: 12px; }
  .intro p { font-size: 12px; }
  .mapLegend { left: 9px; right: 9px; bottom: 9px; width: fit-content; max-width: calc(100% - 18px); flex-wrap: wrap; gap: 7px 10px; }
}