:root {
      --bg: #f2f6fb;
      --panel: #ffffff;
      --panel2: #f8fbff;
      --line: #d5e0ed;
      --text: #16202a;
      --muted: #5b6979;
      --brand: #1b6ad8;
      --ok: #087443;
      --err: #b42318;
    }

    * { box-sizing: border-box; }

    html, body {
      margin: 0;
      width: 100%;
      height: 100%;
      background: var(--bg);
      color: var(--text);
      font-family: "Segoe UI", "Helvetica Neue", Helvetica, Arial, sans-serif;
    }

    #app {
      display: grid;
      width: 100%;
      height: 100%;
      grid-template-columns: 360px 1fr;
    }

    #sidebar {
      border-right: 1px solid var(--line);
      background: var(--panel);
      overflow: auto;
      padding: 14px;
    }

    #map {
      width: 100%;
      height: 100%;
      min-height: 360px;
    }

    h1 {
      margin: 0 0 10px;
      font-size: 18px;
      line-height: 1.25;
    }

    .muted {
      color: var(--muted);
      font-size: 12px;
      margin: 0 0 12px;
    }

    .card {
      border: 1px solid var(--line);
      border-radius: 8px;
      background: var(--panel2);
      padding: 10px;
      margin-bottom: 12px;
    }

    .row {
      display: grid;
      gap: 8px;
      margin-bottom: 8px;
    }

    .row.two {
      grid-template-columns: 1fr 1fr;
    }

    label {
      font-size: 12px;
      color: var(--muted);
      display: block;
      margin-bottom: 4px;
    }

    input[type="text"],
    select,
    button,
    input[type="file"] {
      width: 100%;
      border: 1px solid var(--line);
      border-radius: 6px;
      padding: 8px;
      font-size: 13px;
      background: #fff;
      color: var(--text);
    }

    button {
      cursor: pointer;
      font-weight: 600;
      background: var(--brand);
      color: #fff;
      border-color: var(--brand);
    }

    button.secondary {
      background: #fff;
      color: var(--text);
      border-color: var(--line);
      font-weight: 500;
    }

    #status {
      margin: 0;
      font-size: 12px;
      word-break: break-word;
      color: var(--muted);
    }

    #status.ok { color: var(--ok); }
    #status.err { color: var(--err); }

    #layers {
      list-style: none;
      margin: 0;
      padding: 0;
      display: grid;
      gap: 8px;
    }

    .layer-item {
      border: 1px solid var(--line);
      border-radius: 8px;
      background: #fff;
      padding: 8px;
      display: grid;
      gap: 8px;
    }

    .layer-head {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 8px;
    }

    .layer-name {
      font-size: 13px;
      font-weight: 600;
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
    }

    .layer-meta {
      color: var(--muted);
      font-size: 11px;
    }

    .controls {
      display: flex;
      gap: 6px;
    }

    .controls button {
      width: auto;
      padding: 6px 8px;
      font-size: 12px;
    }

    #queryOutput {
      margin: 0;
      white-space: pre-wrap;
      max-height: 140px;
      overflow: auto;
      font-size: 12px;
      font-family: ui-monospace, Menlo, Consolas, monospace;
      background: #fff;
      border: 1px solid var(--line);
      border-radius: 6px;
      padding: 8px;
    }

    @media (max-width: 980px) {
      #app {
        grid-template-columns: 1fr;
        grid-template-rows: auto 1fr;
      }

      #sidebar {
        border-right: 0;
        border-bottom: 1px solid var(--line);
        max-height: 44vh;
      }
    }