:root {
  --bg: #f3f1ec;
  --paper: #fbfaf7;
  --panel: #ffffff;
  --ink: #1f2328;
  --ink-2: #57606a;
  --ink-3: #8b949e;
  --line: #dedad2;
  --line-2: #ebe8e1;
  --accent: #2557d6;
  --accent-soft: #e7edfc;
  --ref: #1f8a8a;
  --seam: #e06a1b;
  --danger: #c0392b;
  --ok: #2e7d4f;
  --radius: 8px;
  --font: "Pretendard", "Apple SD Gothic Neo", "Malgun Gothic", system-ui, sans-serif;
  color-scheme: light;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { height: 100%; margin: 0; }
body { font: 13px/1.45 var(--font); color: var(--ink); background: var(--bg); display: grid; grid-template-rows: auto 1fr auto; overflow: hidden; }
kbd { font: 11px/1 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; padding: 2px 4px; border: 1px solid var(--line); border-bottom-width: 2px; border-radius: 4px; background: var(--paper); color: var(--ink-2); }
.muted { color: var(--ink-3); }

/* 상단 */
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 8px 14px; background: var(--panel); border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 10px; }
.brand strong { font-size: 15px; letter-spacing: -0.01em; }
.brand .sub { color: var(--ink-3); font-size: 12px; }
.brand .mark { width: 22px; height: 22px; display: block; }
.file-actions { display: flex; align-items: center; gap: 6px; }
.divider { width: 1px; height: 20px; background: var(--line); margin: 0 4px; }

/* 버튼 */
.btn { font: inherit; display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 6px 11px; border: 1px solid var(--line); border-radius: 6px; background: var(--panel); color: var(--ink); cursor: pointer; white-space: nowrap; }
.btn:hover { border-color: #c8c3b8; background: var(--paper); }
.btn:focus-visible, .op:focus-visible, .tool:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { background: #1d48b8; }
.btn.ghost { border-color: transparent; background: transparent; }
.btn.ghost:hover { background: var(--line-2); }
.btn.danger { color: var(--danger); }
.btn.wide { grid-column: 1 / -1; }
.btn:disabled, .op:disabled { opacity: .45; cursor: not-allowed; }

/* 배치 */
.layout { display: grid; grid-template-columns: 64px 1fr 320px; min-height: 0; }
.toolrail { display: flex; flex-direction: column; gap: 4px; padding: 8px 6px; background: var(--panel); border-right: 1px solid var(--line); }
.tool { font: inherit; display: grid; justify-items: center; gap: 1px; padding: 7px 2px 6px; border: 1px solid transparent; border-radius: 6px; background: transparent; color: var(--ink-2); cursor: pointer; font-size: 11px; }
.tool .ico { font-size: 17px; line-height: 1.1; color: var(--ink); }
.tool kbd { font-size: 9px; padding: 1px 3px; }
.tool:hover { background: var(--line-2); }
.tool[aria-pressed="true"] { background: var(--accent-soft); border-color: #c4d3f7; color: var(--accent); }
.tool[aria-pressed="true"] .ico { color: var(--accent); }
.rail-gap { flex: 1; }

.stage { position: relative; min-width: 0; min-height: 0; background: var(--paper); overflow: hidden; }
.stage canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; touch-action: none; }
.stage.dragover { box-shadow: inset 0 0 0 3px var(--accent); }
.empty { position: absolute; inset: 0; display: grid; place-content: center; text-align: center; pointer-events: none; color: var(--ink-2); padding: 24px; }
.empty h2 { margin: 0 0 8px; font-size: 18px; color: var(--ink); }
.empty p { margin: 4px 0; max-width: 520px; }
.hud { position: absolute; left: 10px; bottom: 10px; padding: 4px 8px; border-radius: 6px; background: rgba(255,255,255,.88); border: 1px solid var(--line); color: var(--ink-2); font: 11px/1.4 ui-monospace, Menlo, Consolas, monospace; pointer-events: none; }
.knife-hint { position: absolute; left: 50%; bottom: 12px; transform: translateX(-50%); max-width: min(720px, 92%); padding: 8px 12px; border-radius: 8px; background: rgba(31,35,40,.9); color: #f3f1ec; font-size: 12px; text-align: center; pointer-events: none; }
.knife-hint kbd { background: #2f353c; color: #f3f1ec; border-color: #4a525b; }
.knife-hint .muted { color: #b8bec6; }

/* 오른쪽 패널 */
.panel { overflow-y: auto; background: var(--bg); border-left: 1px solid var(--line); padding: 10px; display: flex; flex-direction: column; gap: 10px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 10px 12px 12px; }
.card h3 { margin: 0 0 6px; font-size: 13px; display: flex; align-items: center; gap: 6px; }
.badge { font-size: 11px; font-weight: 600; padding: 0 6px; border-radius: 10px; background: var(--line-2); color: var(--ink-2); }
.hint { margin: 0 0 8px; color: var(--ink-3); font-size: 12px; }

.item-list { list-style: none; margin: 0; padding: 0; max-height: 260px; overflow-y: auto; border: 1px solid var(--line-2); border-radius: 6px; }
.item-list:empty::before { content: "아직 조각이 없습니다."; display: block; padding: 10px; color: var(--ink-3); }
.item-list li { display: grid; grid-template-columns: 22px 14px 1fr auto; align-items: center; gap: 6px; padding: 4px 6px; border-bottom: 1px solid var(--line-2); cursor: pointer; user-select: none; }
.item-list li:last-child { border-bottom: 0; }
.item-list li:hover { background: var(--paper); }
.item-list li.sel { background: var(--accent-soft); box-shadow: inset 3px 0 0 var(--accent); }
.item-list li.off .nm { color: var(--ink-3); text-decoration: line-through; }
.item-list .eye { border: 0; background: none; cursor: pointer; padding: 0; font-size: 13px; color: var(--ink-2); }
.item-list .sw { width: 12px; height: 12px; border-radius: 3px; border: 1px solid rgba(0,0,0,.15); background-size: cover; background-position: center; }
.item-list .sw.ref { background: none; border: 2px dashed var(--ref); border-radius: 2px; }
.item-list .nm { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.item-list .tag { font-size: 10px; color: var(--ink-3); }

.ops { display: grid; gap: 6px; }
.op { font: inherit; text-align: left; display: grid; grid-template-columns: 1fr auto; grid-template-rows: auto auto; column-gap: 8px; padding: 7px 10px; border: 1px solid var(--line); border-radius: 6px; background: var(--panel); cursor: pointer; color: var(--ink); }
.op:hover:not(:disabled) { border-color: var(--accent); background: var(--accent-soft); }
.op b { font-weight: 600; }
.op span { grid-column: 1; font-size: 11.5px; color: var(--ink-2); }
.op kbd { grid-column: 2; grid-row: 1 / span 2; align-self: center; }
.ops.small { grid-template-columns: repeat(2, 1fr); margin-top: 8px; }
.ops.small .btn { padding: 5px 6px; font-size: 12px; }

.props label { display: grid; gap: 2px; font-size: 11.5px; color: var(--ink-2); }
.props input { font: inherit; color: var(--ink); padding: 5px 7px; border: 1px solid var(--line); border-radius: 5px; width: 100%; background: var(--paper); }
.props input:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }
.row3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; margin-top: 6px; }
.facts { display: grid; grid-template-columns: auto 1fr; gap: 2px 10px; margin: 8px 0 0; font-size: 12px; }
.facts dt { color: var(--ink-3); }
.facts dd { margin: 0; font-variant-numeric: tabular-nums; }
.facts .warn { color: var(--danger); }

.toggles { display: grid; grid-template-columns: repeat(3, auto); gap: 4px 10px; justify-content: start; }
.toggles label { display: flex; align-items: center; gap: 4px; cursor: pointer; }
.slider { display: grid; grid-template-columns: auto 1fr; align-items: center; gap: 8px; margin-top: 8px; color: var(--ink-2); font-size: 12px; }
.inline { display: flex; align-items: center; gap: 8px; color: var(--ink-2); font-size: 12px; }
select { font: inherit; padding: 4px 6px; border: 1px solid var(--line); border-radius: 5px; background: var(--paper); }

.statusbar { padding: 6px 14px; background: var(--panel); border-top: 1px solid var(--line); color: var(--ink-2); font-size: 12px; display: flex; gap: 10px; align-items: center; min-height: 30px; }
.statusbar.error { color: var(--danger); }
.statusbar.ok { color: var(--ok); }
.statusbar.pending { color: var(--accent); }
.statusbar a { color: var(--accent); }

dialog { border: 1px solid var(--line); border-radius: 10px; padding: 18px 20px; max-width: 460px; box-shadow: 0 12px 40px rgba(0,0,0,.18); }
dialog::backdrop { background: rgba(31,35,40,.35); }
dialog h3 { margin: 0 0 6px; font-size: 15px; }
dialog p { margin: 0 0 12px; color: var(--ink-2); }
dialog .choice { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 12px; }
dialog .choice .btn { display: grid; justify-items: start; text-align: left; padding: 10px 12px; white-space: normal; }
dialog .choice .btn span { font-size: 11.5px; opacity: .85; }
dialog menu { margin: 12px 0 0; padding: 0; display: flex; justify-content: flex-end; }

@media (max-width: 980px) {
  .layout { grid-template-columns: 56px 1fr 270px; }
  .brand .sub { display: none; }
}
@media (max-width: 720px) {
  body { overflow: auto; }
  .layout { grid-template-columns: 1fr; grid-template-rows: auto 60vh auto; }
  .toolrail { flex-direction: row; border-right: 0; border-bottom: 1px solid var(--line); }
  .rail-gap { display: none; }
  .panel { border-left: 0; }
}

/* 접합 */
.seg { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
.seg button { font: inherit; font-size: 12px; padding: 6px 2px; border: 0; border-right: 1px solid var(--line); background: var(--panel); color: var(--ink-2); cursor: pointer; }
.seg button:last-child { border-right: 0; }
.seg button[aria-pressed="true"] { background: var(--accent); color: #fff; font-weight: 600; }
.seg button:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; }
.type-desc { margin: 8px 0; font-size: 12px; color: var(--ink-2); line-height: 1.5; }
.params { display: grid; gap: 6px; }
.params label { display: grid; grid-template-columns: 1fr 110px; align-items: center; gap: 6px; font-size: 12px; color: var(--ink-2); position: relative; }
.params label .unit { position: absolute; right: 8px; font-size: 11px; color: var(--ink-3); pointer-events: none; }
.params input, .params select { font: inherit; font-size: 12px; padding: 4px 6px; border: 1px solid var(--line); border-radius: 5px; background: var(--paper); width: 100%; }
.params input { padding-right: 30px; text-align: right; }
.params select { grid-column: 2; }
#jointNote { margin: 8px 0 0; }
.joint-list { list-style: none; margin: 10px 0 0; padding: 0; }
.joint-list:empty { display: none; }
.joint-list li { display: grid; grid-template-columns: 10px 1fr auto 18px; align-items: center; gap: 6px; padding: 4px 6px; border: 1px solid var(--line-2); border-radius: 5px; margin-top: 4px; cursor: pointer; font-size: 12px; }
.joint-list li:hover { background: var(--paper); }
.joint-list li.sel { background: var(--accent-soft); border-color: #c4d3f7; }
.joint-list .dot { width: 10px; height: 10px; border-radius: 50%; }
.joint-list .nm { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.joint-list .tag { color: var(--ink-3); font-size: 11px; }
.joint-list .x { border: 0; background: none; color: var(--ink-3); cursor: pointer; padding: 0; }
.joint-list .x:hover { color: var(--danger); }
.sa-row { margin-top: 10px; }
.sa-row input { width: 64px; font: inherit; padding: 4px 6px; border: 1px solid var(--line); border-radius: 5px; background: var(--paper); text-align: right; }
.props label.inline { display: flex; grid-template-columns: none; }
/* CLO 배치 · CLO 의상 파일 */
.clo-row select { flex: 1; min-width: 0; font: inherit; padding: 4px 6px; border: 1px solid var(--line); border-radius: 5px; background: var(--paper); }
.clo-out { margin-top: 14px; padding-top: 12px; border-top: 1px solid var(--line); }
.clo-out h4 { margin: 0 0 6px; font-size: 13px; }
.clo-out h4 .muted { font-weight: 400; font-size: 11px; }
.clo-tpl { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin: 8px 0 4px; font-size: 12px; color: var(--ink-2); }
.clo-tpl span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.clo-tpl span.ok { color: var(--ink); font-weight: 600; }
.clo-out h4.sub { margin-top: 16px; }
.size-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6px 10px; margin: 6px 0; }
.size-grid label { display: flex; align-items: center; gap: 4px; font-size: 12px; color: var(--ink-2); }
.size-grid input { width: 58px; font: inherit; padding: 4px 6px; border: 1px solid var(--line); border-radius: 5px; background: var(--paper); text-align: right; margin-left: auto; }
.size-grid .unit { font-size: 11px; color: var(--ink-3); }

.mark-list { display: grid; gap: 4px; margin: 6px 0; }
.mark-list .mark-head { font-size: 12px; color: var(--ink-2); }
.mark-list .mark-row { display: flex; justify-content: space-between; align-items: center; gap: 8px; font-size: 12px; }
.mark-list .mark-row input { width: 84px; }