:root {
  --bg: #15171c;
  --panel: #1d2027;
  --panel-2: #252932;
  --border: #323743;
  --text: #d8dce4;
  --muted: #8b93a3;
  --accent: #6aa9ff;
  --accent-2: #3d7be0;
  --ok: #5ccf8a;
  --warn: #f0b44c;
  --bad: #ef6464;
  --mono: ui-monospace, "JetBrains Mono", "Fira Code", Menlo, monospace;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--text);
  font: 13px/1.4 system-ui, -apple-system, "Segoe UI", sans-serif; }
body { display: grid; grid-template-rows: auto 1fr auto; overflow: hidden; }

header { display: flex; align-items: center; gap: 12px; padding: 6px 12px;
  background: var(--panel); border-bottom: 1px solid var(--border); }
header h1 { font-size: 14px; margin: 0 8px 0 0; letter-spacing: .3px; white-space: nowrap; }
header h1 span { color: var(--accent); }
nav.tabs { display: flex; gap: 2px; flex-wrap: wrap; }
nav.tabs button { background: transparent; border: 0; color: var(--muted); padding: 6px 12px;
  border-radius: 6px; cursor: pointer; font: inherit; }
nav.tabs button:hover { color: var(--text); background: var(--panel-2); }
nav.tabs button.active { color: var(--text); background: var(--panel-2); box-shadow: inset 0 -2px var(--accent); }
.spacer { flex: 1; }
#project-picker { display: flex; align-items: center; gap: 6px; }

main { position: relative; overflow: hidden; }
.tab { position: absolute; inset: 0; display: none; }
.tab.active { display: flex; }

footer { display: flex; gap: 16px; padding: 3px 12px; background: var(--panel);
  border-top: 1px solid var(--border); color: var(--muted); font-family: var(--mono); font-size: 12px;
  white-space: nowrap; overflow: hidden; }
footer b { color: var(--text); font-weight: 500; }

button, select, input, textarea { font: inherit; color: var(--text); }
button { background: var(--panel-2); border: 1px solid var(--border); border-radius: 6px; padding: 4px 10px;
  cursor: pointer; }
button:hover { border-color: var(--accent-2); }
button.primary { background: var(--accent-2); border-color: var(--accent-2); color: #fff; }
button.primary:hover { background: var(--accent); }
button.danger { border-color: #6b2b2b; color: #ffb3b3; }
button:disabled { opacity: .5; cursor: default; }
button.icon { padding: 2px 7px; }
button.on { background: var(--accent-2); border-color: var(--accent); color: #fff; }
select, input[type=text], input[type=number], input:not([type]), textarea {
  background: var(--bg); border: 1px solid var(--border); border-radius: 5px; padding: 3px 6px; }
input[type=number] { width: 72px; }
textarea { width: 100%; font-family: var(--mono); font-size: 12px; }
label.check { display: flex; align-items: center; gap: 6px; cursor: pointer; user-select: none; }

.canvas-wrap { flex: 1; position: relative; overflow: hidden; background: #0d0f12; }
.canvas-wrap canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }

.side { width: 320px; flex: none; background: var(--panel); border-left: 1px solid var(--border);
  overflow-y: auto; padding: 10px 12px; }
.side.left { border-left: 0; border-right: 1px solid var(--border); }
.side h3 { font-size: 11px; text-transform: uppercase; letter-spacing: .8px; color: var(--muted);
  margin: 14px 0 6px; }
.side h3:first-child { margin-top: 2px; }

dl.kv { display: grid; grid-template-columns: auto 1fr; gap: 2px 10px; margin: 0; font-family: var(--mono);
  font-size: 12px; }
dl.kv dt { color: var(--muted); }
dl.kv dd { margin: 0; overflow-wrap: anywhere; }

.row { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; margin: 4px 0; }
.stack { display: flex; flex-direction: column; gap: 6px; }
.muted { color: var(--muted); }
.mono { font-family: var(--mono); }
.small { font-size: 11px; }
.warn { color: var(--warn); }
.bad { color: var(--bad); }
.ok { color: var(--ok); }
.pill { display: inline-block; padding: 0 6px; border-radius: 9px; background: var(--panel-2);
  border: 1px solid var(--border); font-size: 11px; }
.list { display: flex; flex-direction: column; gap: 4px; }
.list .item { padding: 6px 8px; border: 1px solid var(--border); border-radius: 6px; background: var(--panel-2); }
.list .item.sel { border-color: var(--accent); }
.notice { padding: 8px 10px; border-radius: 6px; background: #2a2416; border: 1px solid #5a4a22;
  color: #f3d9a4; margin: 6px 0; font-size: 12px; }
.notice.info { background: #17222f; border-color: #2c4766; color: #bcd6f5; }
.notice.bad { background: #2e1818; border-color: #6b2b2b; color: #ffc4c4; }

.toolbar { display: flex; gap: 4px; align-items: center; padding: 6px 8px; background: var(--panel);
  border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.toolbar .sep { width: 1px; height: 20px; background: var(--border); margin: 0 4px; }

.col { display: flex; flex-direction: column; flex: 1; min-width: 0; }

/* modal */
.modal-back { position: fixed; inset: 0; background: rgba(0,0,0,.55); display: flex; align-items: center;
  justify-content: center; z-index: 100; }
.modal { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 16px 18px;
  width: min(640px, 94vw); max-height: 88vh; overflow: auto; box-shadow: 0 20px 60px rgba(0,0,0,.5); }
.modal h2 { margin: 0 0 10px; font-size: 16px; }
.form { display: grid; grid-template-columns: 140px 1fr; gap: 6px 10px; align-items: center; }
.form label { color: var(--muted); }
.modal .actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 14px; }
.overlap-ask ul { margin: 6px 0 10px; padding-left: 20px; }
.overlap-ask li { margin: 2px 0; }

/* palette */
.palette { display: grid; grid-template-columns: repeat(auto-fill, minmax(64px, 1fr)); gap: 4px; align-content: start; }
.palette .tile { background: #0d0f12; border: 1px solid var(--border); border-radius: 4px; height: 96px;
  display: flex; align-items: center; justify-content: center; cursor: pointer; position: relative; overflow: hidden; }
.palette .tile.sel { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
/* the whole canvas shows: taller ones (64x128) are scaled down to the tile, keeping their aspect */
.palette .tile canvas { max-width: 100%; max-height: 100%; object-fit: contain; }
.palette .tile span { position: absolute; top: 1px; left: 3px; font-size: 9px; color: var(--muted); z-index: 1; }

.toast { position: fixed; right: 16px; bottom: 36px; background: var(--panel-2); border: 1px solid var(--border);
  border-radius: 8px; padding: 8px 12px; z-index: 200; max-width: 420px; box-shadow: 0 8px 30px rgba(0,0,0,.4); }
.toast.bad { border-color: var(--bad); }
.toast.ok { border-color: var(--ok); }

table.grid { border-collapse: collapse; width: 100%; font-size: 12px; }
table.grid th, table.grid td { border-bottom: 1px solid var(--border); padding: 3px 6px; text-align: left; }
table.grid th { color: var(--muted); font-weight: 500; position: sticky; top: 0; background: var(--panel); }
table.grid tr.sel td { background: #1b2a40; }
table.grid tr:hover td { background: var(--panel-2); cursor: pointer; }

.empty { margin: auto; text-align: center; color: var(--muted); max-width: 480px; padding: 40px; }
.empty h2 { color: var(--text); }

@media (max-width: 1000px) {
  header { flex-wrap: wrap; gap: 6px; }
  nav.tabs { order: 3; width: 100%; flex-wrap: nowrap; overflow-x: auto; }
  nav.tabs button { white-space: nowrap; padding: 4px 8px; }
  .side { width: 240px; }
  footer { gap: 10px; font-size: 11px; }
}
@media (max-width: 700px) {
  .tab.active { flex-direction: column; }
  .tab.active > .col { flex: 1 0 50%; }
  .side { width: auto !important; height: 25%; flex: none; border-left: 0; border-top: 1px solid var(--border); }
  .side.left { order: 2; }
  #project-picker .muted { display: none; }
}

/* sign-in page */
body.login-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
main.login { display: flex; width: 100%; justify-content: center; padding: 16px; }
main.login .modal { width: min(420px, 100%); }
#user-box { display: flex; align-items: center; gap: 6px; }

/* map editor: toolbar groups, popovers */
.side.palette-side { width: 300px; display: flex; flex-direction: column; }
@media (max-width: 1000px) {
  .side.palette-side { width: 220px; }
  .side.right-panel { width: 250px; }
}
.editor-toolbar { gap: 6px; }
.editor-toolbar button { white-space: nowrap; }
.tgroup { display: flex; align-items: center; gap: 3px; padding: 2px 4px; border: 1px solid var(--border);
  border-radius: 8px; background: var(--bg); }
.tgroup > .muted { padding: 0 2px; }
.editor-toolbar button.tool { display: inline-flex; align-items: center; gap: 4px; padding: 3px 8px; }
.editor-toolbar button.tool .ic { font-size: 14px; line-height: 1; }
.editor-toolbar input[type=number] { width: 54px; }
.save-state { white-space: nowrap; }
.help-btn { font-weight: 600; border-radius: 50%; width: 26px; height: 26px; padding: 0; }
@media (max-width: 1600px) { .editor-toolbar button.tool .lbl { display: none; } }
.popover, .menu { position: fixed; z-index: 150; background: var(--panel); border: 1px solid var(--border);
  border-radius: 8px; box-shadow: 0 10px 30px rgba(0,0,0,.45); }
.popover { padding: 10px 12px; max-width: min(480px, 94vw); max-height: 80vh; overflow: auto; }
.menu { display: flex; flex-direction: column; padding: 4px; min-width: 190px; }
.menu button { background: transparent; border: 0; text-align: left; padding: 5px 10px; border-radius: 5px; }
.menu button:hover { background: var(--panel-2); }
table.keys { border-collapse: collapse; margin: 6px 0; font-size: 12px; }
table.keys td { padding: 3px 10px 3px 0; vertical-align: top; }
kbd { font-family: var(--mono); font-size: 11px; background: var(--bg); border: 1px solid var(--border);
  border-bottom-width: 2px; border-radius: 4px; padding: 0 5px; white-space: nowrap; }

/* map editor: right panel (brush, selection, outline) */
.side.right-panel { padding: 0; overflow-x: hidden; }
.outline-panel .sec { border-bottom: 1px solid var(--border); }
.outline-panel .sec-head { display: flex; align-items: center; gap: 4px; padding: 6px 8px 6px 10px; cursor: pointer;
  user-select: none; font-size: 11px; text-transform: uppercase; letter-spacing: .8px; color: var(--muted);
  position: sticky; top: 0; background: var(--panel); z-index: 2; }
.outline-panel .sec-head:hover { color: var(--text); }
.outline-panel .sec-head .tw { width: 12px; display: inline-block; transition: transform .1s; }
.outline-panel .sec-head button { text-transform: none; letter-spacing: 0; }
.outline-panel .sec.collapsed .sec-body { display: none; }
.outline-panel .sec.collapsed .sec-head .tw { transform: rotate(-90deg); }
.outline-panel .sec-body { padding: 2px 10px 10px; }
.grow { flex: 1; min-width: 0; }
.name { overflow-wrap: anywhere; }
.brush-box { display: flex; gap: 8px; align-items: flex-start; }
.swatch { display: inline-block; width: 14px; height: 14px; border-radius: 3px; border: 1px solid rgba(255,255,255,.25); flex: none; }
.swatch.big { width: 40px; height: 40px; border-radius: 6px; }
canvas.thumb { flex: none; background: #0d0f12; border-radius: 4px; }
.sel-title { display: flex; align-items: center; gap: 6px; margin: 2px 0; }
button.chip { font-size: 11px; padding: 1px 8px; border-radius: 10px; }
.stack-list { display: flex; flex-direction: column; gap: 4px; margin-top: 4px; }
.stack-row { display: flex; gap: 6px; align-items: flex-start; padding: 4px; border: 1px solid var(--border);
  border-radius: 6px; background: var(--panel-2); }
.stack-row .btns { display: grid; grid-template-columns: auto auto; gap: 2px; flex: none; }
.stack-row .props { max-height: 160px; overflow: auto; }
.btn-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; margin-top: 6px; }
.seg { display: flex; align-items: center; gap: 2px; margin: 4px 0 6px; }
.seg button { padding: 2px 8px; font-size: 12px; }
.seg > .muted { margin-right: 4px; }
.tree { font-size: 12px; }
.tree-row { display: flex; align-items: center; gap: 4px; padding: 1px 4px; border-radius: 4px; cursor: pointer;
  white-space: nowrap; min-height: 22px; position: relative; }
.tree-row:hover { background: var(--panel-2); }
.tree-row.sel { background: #1b2a40; box-shadow: inset 2px 0 var(--accent); }
.tree-row.ctx { background: rgba(106,169,255,.07); }
.tree-row.dim { color: var(--muted); cursor: default; font-style: italic; }
.tree-row.more { color: var(--accent); }
.tree-row.more, .tree-row.dim { white-space: normal; }
.tree-row .tw { width: 12px; flex: none; color: var(--muted); text-align: center; }
.tree-row .ti { width: 14px; flex: none; text-align: center; color: var(--muted); }
.tree-row .tl { overflow: hidden; text-overflow: ellipsis; flex: 0 1 auto; min-width: 4em; }
.tree-row .ts { color: var(--muted); font-size: 11px; overflow: hidden; text-overflow: ellipsis; flex: 1 1 0; min-width: 0; }
.tree-row .tb { margin-left: auto; flex: 0 1 auto; min-width: 0; overflow: hidden; text-overflow: ellipsis; font-size: 10px;
  color: var(--muted); background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: 0 5px; }
.tree-row .tmenu { position: absolute; right: 2px; top: 50%; transform: translateY(-50%); padding: 0 6px; line-height: 16px;
  display: none; background: var(--panel-2); }
.tree-row:hover .tmenu { display: block; }

/* map editor: terrain brushes (left palette) */
.terrain-list { display: flex; flex-direction: column; gap: 3px; }
.terrain-list .sub-head { font-size: 11px; text-transform: uppercase; letter-spacing: .6px; color: var(--muted); margin: 6px 0 2px; }
.terrain-brush { display: flex; align-items: center; gap: 8px; padding: 3px 6px; border: 1px solid var(--border);
  border-radius: 6px; background: var(--panel-2); cursor: pointer; }
.terrain-brush:hover { border-color: var(--accent-2); }
.terrain-brush.sel { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.terrain-brush canvas { width: 24px; height: 48px; }