:root {
  --bg: #f6f7f9; --panel: #ffffff; --panel2: #f0f2f5; --text: #1f2328; --muted: #656d76; --faint: #8c959f;
  --border: #d0d7de; --accent: #1f6feb; --accent-text: #ffffff; --danger: #cf222e; --sel: #dbe9ff; --hover: #eef2f7;
  --orange: #ff9500; --shadow: 0 4px 16px rgba(0,0,0,.15);
  --map-bg: #e9e6df;
  font: 13px/1.4 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161b22; --panel: #1c2128; --panel2: #22272e; --text: #e6edf3; --muted: #9da7b3; --faint: #768390;
    --border: #373e47; --accent: #388bfd; --sel: #1f3a5f; --hover: #2d333b; --map-bg: #1e1e1e;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--text); }
button, input, select, textarea { font: inherit; color: inherit; }
.hidden { display: none !important; }
a { color: var(--accent); }

/* Buttons and inputs */
button {
  background: var(--panel); border: 1px solid var(--border); border-radius: 6px; padding: 4px 10px; cursor: pointer;
  white-space: nowrap;
}
button:hover:not(:disabled) { background: var(--hover); }
button:disabled { opacity: .45; cursor: default; }
button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
button.primary:hover:not(:disabled) { filter: brightness(1.08); background: var(--accent); }
button.danger { color: var(--danger); }
button.icon { padding: 4px 7px; border: none; background: transparent; }
button.icon:hover:not(:disabled) { background: var(--hover); }
button.link { border: none; background: none; color: var(--accent); padding: 0; }
input[type=text], input[type=password], input[type=number], input:not([type]), select, textarea {
  background: var(--panel); border: 1px solid var(--border); border-radius: 6px; padding: 4px 7px; width: 100%; min-width: 0;
}
textarea { resize: vertical; min-height: 70px; }
input[type=color] { width: 40px; height: 24px; padding: 0; border: 1px solid var(--border); border-radius: 4px; background: none; }
label { display: block; }
.error { color: var(--danger); }
.muted { color: var(--muted); }
.small { font-size: 11.5px; }
.mono { font-variant-numeric: tabular-nums; }

/* Login */
.login { position: fixed; inset: 0; display: flex; align-items: center; justify-content: center; background: var(--bg); }
.login-card { width: 320px; background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 28px; box-shadow: var(--shadow); }
.login-card h1 { margin: 6px 0 18px; font-size: 22px; text-align: center; }
.login-card label { margin-bottom: 12px; color: var(--muted); }
.login-card label input { margin-top: 4px; }
.login-card button { width: 100%; margin-top: 6px; padding: 7px; }
.login-icon { display: block; width: 64px; height: 64px; margin: 0 auto; border-radius: 14px; }

/* Layout */
.app {
  position: fixed; inset: 0; display: grid;
  grid-template-columns: 190px 270px minmax(0, 1fr) 320px;
  grid-template-rows: 44px minmax(0, 1fr);
  grid-template-areas: "tb tb tb tb" "side list center insp";
}
.app.no-inspector { grid-template-columns: 190px 270px minmax(0, 1fr) 0; }
.app.no-inspector .inspector { display: none; }
.toolbar { grid-area: tb; display: flex; align-items: center; gap: 6px; padding: 0 10px; border-bottom: 1px solid var(--border); background: var(--panel); }
.toolbar .brand { display: flex; align-items: center; gap: 7px; font-weight: 600; margin-right: 10px; }
.toolbar .brand img { width: 24px; height: 24px; border-radius: 6px; }
.toolbar .spacer { flex: 1; }
.toolbar button { display: inline-flex; align-items: center; gap: 5px; }
.toolbar button.on { background: var(--sel); border-color: var(--accent); }
.sidebar { grid-area: side; background: var(--panel2); border-right: 1px solid var(--border); overflow: auto; display: flex; flex-direction: column; }
.list { grid-area: list; background: var(--panel); border-right: 1px solid var(--border); display: flex; flex-direction: column; min-height: 0; }
.center { grid-area: center; display: flex; flex-direction: column; min-width: 0; min-height: 0; }
.inspector { grid-area: insp; background: var(--panel2); border-left: 1px solid var(--border); overflow: auto; }
.mapwrap { position: relative; flex: 1; min-height: 0; background: var(--map-bg); }
#map { position: absolute; inset: 0; }

/* Sidebar */
.side-head { padding: 10px 12px 4px; font-size: 11px; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: .03em; }
.tree { padding: 2px 6px; }
#folder-tree { flex: 1; }
.tree-row { display: flex; align-items: center; gap: 4px; padding: 3px 6px; border-radius: 6px; cursor: pointer; user-select: none; }
.tree-row:hover { background: var(--hover); }
.tree-row.sel { background: var(--sel); }
.tree-row.drop { outline: 2px solid var(--accent); }
.tree-row .tw { width: 14px; text-align: center; color: var(--faint); font-size: 10px; }
.tree-row .name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.side-foot { padding: 8px; border-top: 1px solid var(--border); }

/* Item list */
.list-head { padding: 8px; border-bottom: 1px solid var(--border); display: flex; flex-direction: column; gap: 6px; }
.list-title { font-weight: 600; font-size: 14px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.list-body { flex: 1; overflow: auto; padding: 4px; }
.group-title { padding: 8px 8px 2px; font-size: 12px; font-weight: 600; color: var(--muted); }
.row { display: flex; gap: 8px; align-items: center; padding: 5px 8px; border-radius: 6px; cursor: default; user-select: none; }
.row:hover { background: var(--hover); }
.row.sel { background: var(--sel); }
.row .ico { width: 16px; height: 16px; flex: none; }
.row .txt { min-width: 0; flex: 1; }
.row .t1 { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.row .t2 { font-size: 11.5px; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.empty { padding: 30px 16px; text-align: center; color: var(--muted); }

/* Inspector */
.insp-section { margin: 10px; background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 10px; }
.insp-section h3 { margin: 0 0 8px; font-size: 12px; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: .03em; }
.field { margin-bottom: 8px; }
.field > span { display: block; font-size: 11.5px; color: var(--muted); margin-bottom: 2px; }
.field-row { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
.grid2 { display: grid; grid-template-columns: auto 1fr; gap: 3px 12px; font-size: 12.5px; }
.grid2 .k { color: var(--muted); }
.grid2 .v { font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.btns { display: flex; flex-wrap: wrap; gap: 6px; }
.btns.col { flex-direction: column; align-items: stretch; }
.btns.col button { text-align: left; }
.summary-row { display: flex; align-items: center; gap: 6px; font-size: 12px; padding: 1px 0; }
.summary-row .sw { width: 10px; height: 10px; border-radius: 2px; flex: none; }
.summary-row .lbl { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.summary-row .pc { width: 40px; text-align: right; color: var(--muted); }
.stage { display: flex; gap: 8px; align-items: flex-start; padding: 4px 0; border-bottom: 1px solid var(--border); }
.stage:last-child { border-bottom: none; }
.stage .n { font-weight: 600; width: 18px; }
.stage .d { flex: 1; font-size: 12px; font-variant-numeric: tabular-nums; }
.badge { display: inline-block; padding: 1px 6px; border-radius: 10px; font-size: 11px; background: #ff6b0022; color: #c45200; }

/* Planner panel and hint */
.panel { position: absolute; top: 12px; left: 12px; width: 330px; max-width: calc(100% - 24px); max-height: calc(100% - 24px); overflow: auto;
  background: var(--panel); border: 1px solid var(--border); border-radius: 10px; box-shadow: var(--shadow); padding: 12px; z-index: 5; }
.panel h2 { margin: 0; font-size: 14px; }
.panel .stats { display: flex; gap: 14px; margin: 8px 0; }
.panel .stats div span { display: block; font-size: 11px; color: var(--muted); }
.panel details { margin: 6px 0; }
.panel summary { cursor: pointer; }
.hint { position: absolute; top: 12px; left: 12px; background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 7px 12px; z-index: 5; box-shadow: var(--shadow); }
.spinner { display: inline-block; width: 12px; height: 12px; border: 2px solid var(--border); border-top-color: var(--accent); border-radius: 50%; animation: spin .8s linear infinite; vertical-align: -2px; }
@keyframes spin { to { transform: rotate(360deg); } }

/* Elevation profile */
.profile { height: 180px; border-top: 1px solid var(--border); background: var(--panel); display: flex; flex-direction: column; padding: 6px 12px 4px; }
.profile-head { display: flex; align-items: center; gap: 12px; font-size: 11.5px; color: var(--muted); font-variant-numeric: tabular-nums; white-space: nowrap; overflow: hidden; }
.profile-head .sp { flex: 1; }
.profile canvas { flex: 1; width: 100%; min-height: 0; cursor: crosshair; }

/* Map overlays */
.td-cp { width: 18px; height: 18px; border-radius: 50%; background: #fff; border: 3px solid #1f6feb; box-sizing: border-box;
  display: flex; align-items: center; justify-content: center; font-size: 9px; font-weight: 700; color: #1f6feb; cursor: grab; box-shadow: 0 1px 3px rgba(0,0,0,.4); }
.td-cp.first { border-color: #2da44e; color: #2da44e; }
.td-cp.last { border-color: #cf222e; color: #cf222e; }
.td-hover { width: 14px; height: 14px; border-radius: 50%; background: #ff9500; border: 2px solid #fff; box-sizing: border-box; box-shadow: 0 0 0 2px rgba(0,0,0,.25); pointer-events: none; }
.td-error { position: absolute; left: 50%; bottom: 12px; transform: translateX(-50%); background: rgba(207,34,46,.92); color: #fff; padding: 6px 10px; border-radius: 6px; display: none; max-width: 80%; z-index: 10; }

/* Menus, modals, toast */
.menu { position: fixed; z-index: 100; min-width: 190px; background: var(--panel); border: 1px solid var(--border); border-radius: 8px; box-shadow: var(--shadow); padding: 4px; }
.menu .mi { padding: 5px 10px; border-radius: 5px; cursor: default; white-space: nowrap; display: flex; justify-content: space-between; gap: 16px; }
.menu .mi:hover:not(.dis) { background: var(--accent); color: var(--accent-text); }
.menu .mi.dis { opacity: .4; }
.menu .mi.danger { color: var(--danger); }
.menu .mi.danger:hover { color: var(--accent-text); }
.menu .sep { height: 1px; background: var(--border); margin: 4px 2px; }
.menu .mi.check::before { content: "✓ "; }
.modal-bg { position: fixed; inset: 0; background: rgba(0,0,0,.35); z-index: 90; display: flex; align-items: center; justify-content: center; }
.modal { background: var(--panel); border-radius: 12px; box-shadow: var(--shadow); width: 560px; max-width: calc(100vw - 32px); max-height: calc(100vh - 40px); display: flex; flex-direction: column; }
.modal.wide { width: 780px; }
.modal-head { padding: 14px 18px 8px; font-weight: 600; font-size: 15px; }
.modal-body { padding: 4px 18px 10px; overflow: auto; }
.modal-foot { padding: 10px 18px 14px; display: flex; justify-content: flex-end; gap: 8px; border-top: 1px solid var(--border); }
.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--border); margin: 0 18px; flex-wrap: wrap; }
.tabs button { border: none; border-bottom: 2px solid transparent; border-radius: 0; background: none; padding: 6px 10px; }
.tabs button.on { border-bottom-color: var(--accent); color: var(--accent); }
.form-row { display: grid; grid-template-columns: 170px 1fr; gap: 8px; align-items: center; margin-bottom: 8px; }
.form-row > span { color: var(--muted); }
.range2 { display: flex; gap: 6px; align-items: center; }
.note { font-size: 12px; color: var(--muted); margin: 4px 0 10px; }
.table { width: 100%; border-collapse: collapse; font-size: 12.5px; }
.table td, .table th { text-align: left; padding: 5px 6px; border-bottom: 1px solid var(--border); }
.results { border: 1px solid var(--border); border-radius: 8px; max-height: 240px; overflow: auto; margin: 8px 0; }
.result { padding: 6px 10px; border-bottom: 1px solid var(--border); cursor: pointer; }
.result:last-child { border-bottom: none; }
.result.sel { background: var(--sel); }
.result .r2 { font-size: 11.5px; color: var(--muted); }
.result .web { font-size: 11.5px; color: #c45200; }
.toast { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); z-index: 120; background: var(--text); color: var(--bg);
  padding: 9px 16px; border-radius: 8px; box-shadow: var(--shadow); max-width: 70vw; white-space: pre-line; }
.dropzone { position: fixed; inset: 0; z-index: 110; background: rgba(31,111,235,.15); border: 3px dashed var(--accent); display: flex;
  align-items: center; justify-content: center; font-size: 20px; font-weight: 600; color: var(--accent); pointer-events: none; }

@media (max-width: 1100px) {
  .app { grid-template-columns: 160px 230px minmax(0, 1fr) 280px; }
  .app.no-inspector { grid-template-columns: 160px 230px minmax(0, 1fr) 0; }
  .toolbar .lbl { display: none; }
}

/* Sharing */
.tree-row .count { margin-left: auto; color: var(--faint); font-size: 11px; }
.badge.shared { background: #1f6feb1f; color: var(--accent); }
.user-list { max-height: 50vh; overflow: auto; }
.share-info .k { white-space: nowrap; }
.toast { white-space: pre-line; }