:root {
  --bg: #f2eee3; --panel: #faf8f1; --text: #1c1b19; --muted: #6a665c; --line: #cfc8b6;
  --accent: #d9480f; --blue: #1f3a93; --ok: #2d6a3e; --err: #b3261e; --warn: #b45309; --grid: rgba(31, 58, 147, .08);
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  --mono: ui-monospace, "Cascadia Mono", Consolas, "Courier New", monospace;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0f2236; --panel: #0b1b2d; --text: #e8efe9; --muted: #9db0c4; --line: #2c4660; --accent: #ff9b5e; --blue: #9ec1ff; --ok: #8bd6a0; --err: #ff8a7a; --warn: #ffb066; }
}
* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body { display: flex; flex-direction: column; background: var(--bg); color: var(--text); font: 14px/1.4 system-ui, "Segoe UI", sans-serif; }
header { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 10px; padding: 8px 16px; background: var(--bg); border-bottom: 1px solid var(--text); }
h1 { margin: 0 10px 0 0; font: 600 20px/1.1 var(--serif); letter-spacing: -.01em; }
.brand { display: inline-flex; align-items: center; gap: 9px; color: inherit; text-decoration: none; }
.brand:hover { text-decoration: underline; text-underline-offset: 4px; text-decoration-thickness: 1px; }
.brand img { display: block; }
.badge { color: var(--muted); font: 11px var(--mono); text-transform: uppercase; letter-spacing: .06em; }
.spacer { flex: 1; }
label { color: var(--muted); display: flex; align-items: center; gap: 8px; font: 11px var(--mono); text-transform: uppercase; letter-spacing: .08em; }
select, button { font: 12px var(--mono); letter-spacing: .02em; color: var(--text); background: transparent; border: 1px solid var(--text); border-radius: 0; padding: 5px 10px; }
select { background: var(--panel); }
button { cursor: pointer; }
button:disabled { opacity: .35; cursor: default; }
button:disabled:hover { background: transparent; color: var(--text); }
button.primary { background: var(--text); color: var(--bg); }
button.primary:hover { background: transparent; color: var(--text); }
button.danger { border-color: var(--err); color: var(--err); }
button.danger:hover { background: var(--err); color: var(--bg); }
.dlg-actions { display: flex; gap: 8px; flex-wrap: wrap; margin: 4px 0 14px; }
button:hover { background: var(--text); color: var(--bg); }
main { flex: 1; min-height: 0; display: grid; grid-template-columns: minmax(0, var(--split, 50%)) 9px minmax(0, 1fr); }
.pane { position: relative; min-height: 0; min-width: 0; display: flex; flex-direction: column; }
.splitter { background: var(--bg); border-left: 1px solid var(--text); border-right: 1px solid var(--text); cursor: col-resize; touch-action: none; outline: 0; }
.splitter:hover, .splitter:focus-visible, body.dragging .splitter { background: var(--accent); }
body.dragging { user-select: none; cursor: col-resize; }
#editor { flex: 1; resize: none; border: 0; outline: 0; padding: 14px 16px; background: var(--panel); color: var(--text); font: 13px/1.6 ui-monospace, "Cascadia Mono", Consolas, monospace; tab-size: 2; }
#status { padding: 6px 16px; font: 11px var(--mono); color: var(--muted); border-top: 1px solid var(--line); background: var(--bg); min-height: 28px; white-space: pre-wrap; }
#status.error { color: var(--err); }
.legal-links { padding: 4px 16px; font: 11px var(--mono); color: var(--muted); border-top: 1px solid var(--line); background: var(--bg); }
.legal-links a { color: var(--muted); }
.preview { overflow: hidden; background-color: #fffefb; background-image: linear-gradient(var(--grid) 1px, transparent 1px), linear-gradient(90deg, var(--grid) 1px, transparent 1px); background-size: 24px 24px; }
#out { position: absolute; inset: 0; padding: 16px; display: flex; justify-content: center; align-items: flex-start; overflow: hidden; cursor: grab; touch-action: none; }
#out.panning { cursor: grabbing; }
#view { transform-origin: 0 0; max-width: 100%; }
#out svg { display: block; max-width: 100%; height: auto; }
.zoomctl { position: absolute; right: 12px; top: 12px; display: flex; gap: 0; }
.zoomctl button { min-width: 34px; background: #fffefb; color: #1c1b19; border-color: #1c1b19; }
.zoomctl button + button { border-left: 0; }
.zoomctl button:hover { background: #1c1b19; color: #fffefb; }

.feedback { font: 600 12px var(--mono); letter-spacing: .04em; text-decoration: none; padding: 6px 12px; border: 1px solid var(--accent); background: var(--accent); color: #fff; white-space: nowrap; }
.feedback:hover { background: transparent; color: var(--accent); }
@media (prefers-color-scheme: dark) { .feedback { color: #0f2236; } .feedback:hover { color: var(--accent); } }
.linkbtn { font: inherit; font-size: 11px; padding: 0; border: 0; background: none; color: var(--muted); text-decoration: underline; cursor: pointer; }
.linkbtn:hover { color: var(--text); background: none; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

dialog { border: 1px solid var(--text); border-radius: 0; background: var(--bg); color: var(--text); padding: 0; width: min(780px, 94vw); max-height: 86vh; box-shadow: 8px 8px 0 var(--line); }
dialog::backdrop { background: rgba(15, 34, 54, .55); }
.dlg-body { padding: 18px 22px 22px; }
.dlg-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.dlg-head h2 { margin: 0; font: 600 24px/1.1 var(--serif); }
.dlg-sub { color: var(--muted); margin: 6px 0 14px; }
#tpl-list h3 { margin: 18px 0 8px; font: 11px var(--mono); text-transform: uppercase; letter-spacing: .1em; color: var(--accent); font-weight: 400; }
.tpl-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 8px; }
.tpl { display: flex; flex-direction: column; align-items: flex-start; gap: 2px; text-align: left; padding: 10px 12px; font-family: system-ui, "Segoe UI", sans-serif; font-size: 14px; letter-spacing: 0; }
.tpl span { color: var(--muted); font-size: 12px; }
.tpl:hover span { color: inherit; }
.keys { border-collapse: collapse; width: 100%; margin-top: 10px; }
.keys td { padding: 7px 8px 7px 0; border-top: 1px solid var(--line); vertical-align: top; }
.keys td:first-child { white-space: nowrap; width: 1%; padding-right: 24px; }
kbd { font: 12px var(--mono); padding: 1px 6px; border: 1px solid var(--text); border-radius: 0; background: var(--panel); }
@media (max-width: 800px) {
  main { grid-template-columns: minmax(0, 1fr); grid-template-rows: minmax(0, var(--split, 50%)) 9px minmax(0, 1fr); }
  .splitter { cursor: row-resize; border: 0; border-top: 1px solid var(--text); border-bottom: 1px solid var(--text); }
  body.dragging { cursor: row-resize; }
}

@media print {
  @page { margin: 12mm; }
  html, body { height: auto; background: #fff; }
  header, .pane:not(.preview), .splitter, #status, #conv-note { display: none !important; }
  .zoomctl, dialog { display: none !important; }
  #out { position: static; overflow: visible; }
  #view { transform: none !important; }
  main { display: block; }
  .preview { overflow: visible; border: 0; background: #fff; }
  #out { padding: 0; }
  #out svg { max-width: 100%; max-height: 260mm; height: auto; }
}

#conv-note { padding: 8px 16px; font-size: 12px; border-top: 1px solid var(--line); background: var(--bg); }
.note-head { display: flex; gap: 12px; align-items: baseline; flex-wrap: wrap; }
.note-head > span { flex: 1 1 260px; }
.note-warn { color: var(--warn); }
.note-ok { color: var(--ok); }
#conv-note summary { cursor: pointer; margin-top: 6px; color: var(--muted); font: 11px var(--mono); }
.loss-list { margin: 0; padding: 0; list-style: none; max-height: 24vh; overflow: auto; border-left: 3px solid var(--accent); }
.loss-list li { display: grid; grid-template-columns: 64px minmax(0, 1fr); gap: 2px 10px; padding: 6px 10px; border-bottom: 1px dotted var(--line); font-size: 12px; }
.loss-line { color: var(--muted); grid-row: span 2; font: 11px var(--mono); }
.loss-list code { color: var(--text); overflow-wrap: anywhere; }
.loss-why { color: var(--muted); }