:root {
  --bg: #0f1216;
  --panel: #171b21;
  --card: #1c2129;
  --line: #2a313c;
  --text: #dfe4ea;
  --muted: #8a94a3;
  --accent: #ffb020;
  --accent2: #3fb6ff;
  --ok: #3ecf8e;
  --warn: #ffc53d;
  --err: #ff5d5d;
  --mono: ui-monospace, "Cascadia Mono", "Consolas", "SFMono-Regular", monospace;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--text);
  font: 13px/1.35 system-ui, "Segoe UI", Roboto, sans-serif; }
#app { display: grid; grid-template-columns: 380px 1fr; height: 100vh; }

/* ---------- lewy panel ---------- */
#side { background: var(--panel); border-right: 1px solid var(--line); overflow-y: auto; padding: 10px 12px 40px; }
.brand { padding: 4px 2px 10px; }
.logo { font-size: 20px; font-weight: 700; letter-spacing: .5px; }
.logo span { color: var(--accent); }
.sub { color: var(--muted); font-size: 11.5px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 10px 11px; margin-bottom: 10px; }
.card h2 { font-size: 11.5px; text-transform: uppercase; letter-spacing: 1px; color: var(--muted); margin: 0 0 8px; font-weight: 600; }
label { display: block; color: var(--muted); font-size: 11.5px; margin: 6px 0 0; }
label .u { color: #5c6674; }
input, select { width: 100%; background: #10141a; border: 1px solid var(--line); color: var(--text);
  border-radius: 5px; padding: 6px 7px; font: 14px var(--mono); margin-top: 3px; }
input:focus, select:focus { outline: none; border-color: var(--accent2); box-shadow: 0 0 0 2px #3fb6ff33; }
input.invalid { border-color: var(--err); }
select { font: 13px system-ui, sans-serif; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 10px; }
.row { display: flex; gap: 6px; align-items: center; margin-top: 6px; }
.row.tight { margin-top: 5px; flex-wrap: wrap; }
.row > select { flex: 1; margin-top: 0; }
.lbl { color: var(--muted); font-size: 11.5px; margin: 9px 0 3px; }
.hint { color: #6f7a89; font-size: 11px; margin-top: 6px; }
.chk { display: flex; align-items: center; gap: 6px; color: var(--text); font-size: 12.5px; margin-top: 7px; cursor: pointer; }
.chk input { width: auto; margin: 0; accent-color: var(--accent); }
.inline { display: flex; align-items: center; gap: 6px; margin: 0; color: var(--text); }
.inline input { margin: 0; }
.w60 { width: 70px; }
.edges { display: grid; grid-template-columns: repeat(4, 1fr); gap: 4px; }
.edges .chk { margin: 0; background: #10141a; border: 1px solid var(--line); border-radius: 5px; padding: 5px 6px; }

button { font: inherit; color: var(--text); background: #262d38; border: 1px solid #333c49; border-radius: 5px;
  padding: 6px 9px; cursor: pointer; }
button:hover { background: #2e3644; }
button.ghost { background: transparent; }
button.ghost:hover { background: #232a34; }
button.toggle.on { border-color: var(--accent); color: var(--accent); }
.btn.primary, button.primary { background: var(--accent); color: #1a1300; border-color: var(--accent); font-weight: 600; }
.btn { display: inline-block; padding: 7px 10px; border-radius: 5px; cursor: pointer; }
.btn.file { margin: 0; white-space: nowrap; }
.btn.file input { display: none; }

.seg { display: flex; border: 1px solid #333c49; border-radius: 6px; overflow: hidden; margin-top: 3px; }
.seg button { flex: 1; border: 0; border-radius: 0; background: #151a21; color: var(--muted); padding: 7px 4px; font-size: 12.5px; }
.seg button + button { border-left: 1px solid #333c49; }
.seg button.on { background: #2b3442; color: #fff; box-shadow: inset 0 -2px 0 var(--accent); }
.seg.small button { font-size: 11.5px; padding: 6px 3px; }
.seg.fit { flex-wrap: wrap; }
.seg.fit button { flex: 1 1 30%; font-size: 12px; }
.seg.mini { margin: 0; }
.seg.mini button { padding: 4px 7px; font-size: 11.5px; }
.align { gap: 4px; }
.align button { flex: 1; padding: 5px 2px; font-size: 11.5px; }

.dims, .tinfo, .pinfo { margin-top: 8px; font: 12px var(--mono); color: var(--text); background: #12161c; border: 1px solid var(--line);
  border-radius: 6px; padding: 7px 8px; }
.dims b, .tinfo b, .pinfo b { color: var(--accent); font-weight: 600; }
.kv { display: grid; grid-template-columns: auto 1fr; gap: 1px 10px; }
.kv span:nth-child(odd) { color: var(--muted); font-family: system-ui, sans-serif; font-size: 11.5px; }
.muted { color: var(--muted) !important; font-family: system-ui, sans-serif !important; }
.pwarn { color: var(--warn); font-family: system-ui, sans-serif; font-size: 11.5px; margin-top: 4px; }
.tabtable { width: 100%; border-collapse: collapse; margin-top: 8px; font: 12px var(--mono); }
.tabtable th { color: var(--muted); font: 10.5px system-ui, sans-serif; text-align: right; padding: 2px 3px; }
.tabtable td { text-align: right; padding: 2px 3px; border-top: 1px solid var(--line); }
.tabtable th:first-child, .tabtable td:first-child { text-align: left; }
details summary { cursor: pointer; color: var(--muted); font-size: 11.5px; text-transform: uppercase; letter-spacing: 1px; font-weight: 600; }

/* ---------- prawa strona ---------- */
#main { display: grid; grid-template-rows: auto 1fr auto; min-width: 0; min-height: 0; }
#toolbar { display: flex; align-items: center; gap: 6px; padding: 7px 10px; border-bottom: 1px solid var(--line); background: var(--panel); }
#toolbar .seg { margin: 0; }
#toolbar .seg button { padding: 6px 12px; white-space: nowrap; }
#toolbar button { white-space: nowrap; }
.spacer { flex: 1; }
.sep { width: 1px; height: 22px; background: var(--line); margin: 0 4px; }
#canvasWrap { position: relative; min-height: 0; overflow: hidden; background: #0b0e12; }
#cv { position: absolute; inset: 0; width: 100%; height: 100%; display: block; cursor: crosshair; }
#cv.grab { cursor: grab; }
#cv.grabbing { cursor: grabbing; }
#cursorPos { position: absolute; right: 10px; bottom: 8px; font: 12px var(--mono); color: var(--muted); background: #0b0e12cc; padding: 2px 6px; border-radius: 4px; }
#legend { position: absolute; left: 10px; top: 8px; font-size: 11.5px; color: var(--muted); background: #0b0e12cc; padding: 5px 8px; border-radius: 5px; }
#legend i { display: inline-block; width: 18px; height: 0; border-top: 2px solid; vertical-align: middle; margin: 0 5px 0 10px; }
#legend i:first-child { margin-left: 0; }
#legend i.dash { border-top-style: dashed; }
#busy { position: absolute; right: 10px; top: 8px; font-size: 11.5px; color: var(--accent2); }
#helpTip { position: absolute; left: 10px; bottom: 8px; font-size: 11px; color: #5c6674; }
.hidden { display: none !important; }

#bottom { display: grid; grid-template-columns: 1.15fr 1.25fr 300px; gap: 10px; padding: 9px 10px; border-top: 1px solid var(--line);
  background: var(--panel); height: 210px; min-height: 0; }
.bcol { background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px; overflow: auto; font-size: 12px; }
.bcol h3 { margin: 0 0 5px; font-size: 11px; text-transform: uppercase; letter-spacing: 1px; color: var(--muted); font-weight: 600; }
#summary .kv span:nth-child(even) { font-family: var(--mono); }
.issue { padding: 3px 0 3px 18px; position: relative; border-bottom: 1px solid #222832; }
.issue:before { content: ""; position: absolute; left: 3px; top: 8px; width: 8px; height: 8px; border-radius: 50%; }
.issue.error:before { background: var(--err); }
.issue.warning:before { background: var(--warn); }
.issue.info:before { background: var(--accent2); }
.issue.ok:before { background: var(--ok); }
.issue.error { color: #ffb3b3; }
.export { display: flex; flex-direction: column; gap: 8px; }
.export label { margin: 0; }
button.big { background: var(--accent); color: #1a1300; font-weight: 800; font-size: 17px; letter-spacing: 1px; padding: 13px 10px;
  border: 0; border-radius: 7px; }
button.big:hover { background: #ffc24d; }
button.big:disabled { background: #4a3d22; color: #8f7c55; cursor: not-allowed; }
#exportResult { font-size: 11.5px; }
#exportResult .okline { color: var(--ok); font-weight: 600; }
#exportResult .bad { color: var(--err); font-weight: 600; }
#exportResult .chk2 { color: var(--muted); }
#exportResult .chk2.fail { color: var(--err); }

.chk.frame { background: #2a2312; border: 1px solid #5a4818; border-radius: 6px; padding: 7px 8px; font-weight: 600; }