:root {
  --bg: #f5f6f3;
  --panel: #ffffff;
  --text: #1f2933;
  --muted: #667085;
  --green: #1f7a4d;
  --green-dark: #155c39;
  --border: #d7ddd2;
  --red: #b42318;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: Arial, Helvetica, sans-serif; background: var(--bg); color: var(--text); }
header { padding: 16px 22px; background: #123a28; color: white; }
header h1 { margin: 0 0 4px 0; font-size: 22px; }
header p { margin: 0; opacity: .9; }
main { display: grid; grid-template-columns: 390px 1fr; height: calc(100vh - 112px); }
.panel { background: var(--panel); border-right: 1px solid var(--border); padding: 16px; overflow-y: auto; }
.panel h2 { font-size: 16px; margin: 16px 0 8px; }
.panel h2:first-child { margin-top: 0; }
.panel p, small { color: var(--muted); line-height: 1.35; }
.btn-row { display: flex; gap: 8px; margin: 8px 0; flex-wrap: wrap; }
button, .file-label { border: 1px solid var(--border); background: #fff; color: var(--text); padding: 9px 11px; border-radius: 8px; cursor: pointer; font-weight: 600; }
button:hover, .file-label:hover { background: #f1f5ef; }
button.primary { width: 100%; background: var(--green); color: white; border-color: var(--green); font-size: 15px; padding: 12px; }
button.primary:hover { background: var(--green-dark); }
.file-label { display: block; margin-top: 10px; text-align: center; }
.file-label input { display: none; }
.layers-list { border: 1px solid var(--border); border-radius: 10px; padding: 10px; max-height: 420px; overflow: auto; background: #fbfcfa; }
.layer-group { margin-bottom: 12px; }
.layer-group h3 { margin: 8px 0; font-size: 14px; color: #184a32; }
.layer-item { display: flex; align-items: center; gap: 8px; padding: 4px 0; font-size: 13px; }
.status { margin-top: 12px; padding: 10px; border-radius: 8px; background: #f1f5ef; color: var(--muted); min-height: 42px; white-space: pre-wrap; }
.status.error { background: #fee4e2; color: var(--red); }
.download { display: block; margin-top: 10px; padding: 12px; border-radius: 8px; background: #155c39; color: white; text-align: center; text-decoration: none; font-weight: 700; }
.hidden { display: none; }
.map-wrap { position: relative; }
#map { width: 100%; height: 100%; }
footer { height: 36px; display: flex; align-items: center; padding: 0 16px; font-size: 12px; color: var(--muted); background: white; border-top: 1px solid var(--border); }
@media (max-width: 900px) {
  main { grid-template-columns: 1fr; height: auto; }
  .panel { border-right: none; border-bottom: 1px solid var(--border); max-height: none; }
  #map { height: 65vh; }
}