:root{
  --bg:#f5f4f0; --surface:#fbfbf9; --panel:#ffffff; --panel-soft:#f7f6f2;
  --ink:#1c1c1a; --ink-hover:#3a3935; --ink-2:#55534d; --sub:#7a776f; --muted:#8a877f;
  --line:#e3e1db; --line-2:#dcdad3; --line-3:#efeee9; --hover:#efeee9; --soft:#f3f2ee; --track:#ebe9e3;
  --accent:#b8346a; --accent-soft:rgba(184,52,106,.12); --on-accent:#fff;
  --warn:#a15c00; --err:#b3261e;
  --font:"IBM Plex Sans KR",sans-serif; --mono:"JetBrains Mono",monospace;
}
*{box-sizing:border-box}
[hidden]{display:none !important}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);-webkit-font-smoothing:antialiased}
button{font:inherit;color:inherit}
.mono-label{font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:var(--muted)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.hint{font-size:12px;line-height:1.55;color:var(--muted);margin:0}
.app{min-height:100vh;display:flex;flex-direction:column}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 28px;border-bottom:1px solid var(--line);background:var(--surface);flex-wrap:wrap}
.brand{display:flex;align-items:baseline;gap:14px;min-width:0;flex-wrap:wrap}
.brand-title{font-size:17px;font-weight:700;letter-spacing:-.01em;margin:0}
.actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.btn{height:36px;padding:0 14px;background:transparent;border:1px solid var(--line-2);border-radius:999px;font-size:13px;cursor:pointer;white-space:nowrap}
.btn:hover{background:var(--hover)}
.btn--accent{background:var(--accent);color:var(--on-accent);border:none;font-weight:500}
.btn--accent:hover{filter:brightness(1.08);background:var(--accent)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

.layout{flex:1;display:flex;flex-wrap:wrap;align-items:flex-start;min-height:0}
.panel{flex:1 1 300px;max-width:360px;min-width:0;align-self:stretch;border-right:1px solid var(--line);padding:22px 22px 40px;display:flex;flex-direction:column;gap:20px;background:var(--panel)}
.stage{flex:999 1 520px;min-width:0;display:flex;flex-direction:column;gap:14px;padding:28px 28px 48px}
.group{display:flex;flex-direction:column;gap:10px}
.group--line{border-top:1px solid var(--line-3);padding-top:18px}
.group-head{display:flex;justify-content:space-between;align-items:center;gap:8px}
.g-title{margin:0;font-size:14px;font-weight:700;letter-spacing:-.01em}
.note{padding:12px 14px;border-radius:12px;background:var(--panel-soft)}

/* 업로드 */
.drop{position:relative;display:flex;flex-direction:column;align-items:center;gap:6px;padding:20px 14px;border:1.5px dashed var(--line-2);border-radius:14px;background:var(--panel-soft);text-align:center;cursor:pointer;transition:border-color .15s,background .15s}
.drop:hover,.drop.is-over{border-color:var(--accent);background:var(--accent-soft)}
.drop:focus-within{outline:2px solid var(--accent);outline-offset:2px}
.drop input{position:absolute;inset:0;opacity:0;cursor:pointer;width:100%}
.drop-icon{color:var(--accent)}
.drop-t{font-size:13.5px;font-weight:500}
.drop-s{font-size:11.5px;color:var(--muted);line-height:1.5;word-break:keep-all}

/* 유형 */
.types{display:flex;flex-direction:column;gap:6px}
.type{display:grid;grid-template-columns:18px minmax(0,1fr);column-gap:10px;row-gap:1px;align-items:center;text-align:left;padding:10px 12px;border:1px solid var(--line-2);border-radius:12px;background:transparent;cursor:pointer}
.type:hover{border-color:var(--sub)}
.type b{font-size:13.5px;font-weight:700}
.type span{grid-column:2;font-size:11.5px;color:var(--muted);line-height:1.45}
.type[aria-checked="true"]{border-color:var(--accent);background:var(--accent-soft);box-shadow:inset 0 0 0 1px var(--accent)}
.ty-dot{grid-row:1/3;width:18px;height:18px;border-radius:999px}
.ty-dot--p{background:conic-gradient(#d62828 0 50%,#2a9d3a 0)}
.ty-dot--d{background:conic-gradient(#2a9d3a 0 50%,#d62828 0)}
.ty-dot--t{background:conic-gradient(#2563eb 0 50%,#e8c21b 0)}
.ty-dot--a{background:conic-gradient(#1c1c1a 0 50%,#d8d6d0 0)}

.field{display:flex;flex-direction:column;gap:8px}
.field-head{display:flex;justify-content:space-between;align-items:center;gap:8px;font-size:14px;font-weight:700}
.field-head .tb-num{width:58px;height:30px;background:var(--surface);border-color:var(--line-2);color:var(--ink)}
.field .tb-presets{margin-top:0}
input[type=range]{width:100%;accent-color:var(--accent);margin:0}
.seg{display:flex;background:var(--soft);border-radius:999px;padding:3px;gap:2px}
.seg-btn{flex:1;min-width:0;height:32px;padding:0 8px;background:transparent;color:var(--sub);border:none;border-radius:999px;font-size:12.5px;cursor:pointer;white-space:nowrap}
.seg-btn[aria-pressed="true"]{background:#fff;color:var(--ink);box-shadow:0 1px 3px rgba(0,0,0,.12);font-weight:500}

/* 보기 */
.viewer{background:#e9e8e3;border-radius:18px;padding:14px;min-width:0}
.v-side{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.v-all{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:12px}
.fig{margin:0;display:flex;flex-direction:column;gap:6px;min-width:0}
.fig-c{position:relative;border-radius:10px;overflow:hidden;background:#d9d7d0;line-height:0}
.fig canvas,.split canvas{display:block;width:100%;height:auto}
.fig figcaption{font-size:12.5px;font-weight:500;color:#3a3935;display:flex;justify-content:space-between;gap:6px}
.fig figcaption small{font-family:var(--mono);font-size:11px;color:#7a776f;font-weight:400}
.v-split{display:flex;flex-direction:column;gap:10px}
.split{position:relative;border-radius:10px;overflow:hidden;line-height:0;cursor:ew-resize;touch-action:none;user-select:none;-webkit-user-select:none;max-width:100%}
.split-top{position:absolute;inset:0}
.split-line{position:absolute;top:0;bottom:0;width:0;border-left:2px solid #fff;box-shadow:0 0 0 1px rgba(0,0,0,.25);pointer-events:none}
.split-line span{position:absolute;top:50%;left:-15px;width:28px;height:28px;margin-top:-14px;border-radius:999px;background:#fff;box-shadow:0 1px 6px rgba(0,0,0,.3)}
.split-line span::before{content:"‹ ›";position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-size:13px;line-height:1;color:#3a3935;letter-spacing:-1px}
.badge{position:absolute;top:10px;padding:4px 9px;border-radius:999px;background:rgba(28,28,26,.72);color:#fff;font-size:11.5px;line-height:1.3;pointer-events:none}
.badge--l{left:10px}
.badge--r{right:10px}
.split-range input{display:block}

/* 팔레트 */
.card{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:18px 18px 20px;display:flex;flex-direction:column;gap:12px;min-width:0}
.card-head{display:flex;justify-content:space-between;align-items:center;gap:10px}
.fld-k{font-size:12.5px;color:var(--ink-2)}
.ta{width:100%;padding:10px 12px;background:var(--surface);color:var(--ink);border:1px solid var(--line-2);border-radius:10px;font-family:var(--mono);font-size:13px;line-height:1.6;resize:vertical}
.ta:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.pal-wrap{overflow-x:auto}
.pal{width:100%;border-collapse:separate;border-spacing:6px;min-width:440px}
.pal th{font-size:11.5px;font-weight:500;color:var(--muted);text-align:left;padding:0 2px}
.pal td{padding:0}
.sw{display:flex;flex-direction:column;justify-content:flex-end;width:100%;height:52px;padding:5px 7px;border:none;border-radius:10px;cursor:pointer;font-family:var(--mono);font-size:10.5px;text-align:left;box-shadow:inset 0 0 0 1px rgba(0,0,0,.08)}
.sw:hover{transform:translateY(-1px)}
.pairs{display:flex;flex-direction:column;gap:6px}
.pair{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:8px 10px;border-radius:12px;background:var(--panel-soft);font-size:12.5px;color:var(--ink-2)}
.pair i{display:inline-block;width:18px;height:18px;border-radius:6px;vertical-align:middle;box-shadow:inset 0 0 0 1px rgba(0,0,0,.12)}
.pair .chips{display:inline-flex;align-items:center;gap:4px;font-family:var(--mono);font-size:11.5px}
.pair b{font-weight:700}
.pair.err b{color:var(--err)}
.pair.warn b{color:var(--warn)}
.pair-ok{font-size:12.5px;color:var(--ink-2);padding:8px 10px;border-radius:12px;background:var(--panel-soft)}

.toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%,20px);background:var(--ink);color:#fff;padding:10px 18px;border-radius:999px;font-size:13px;opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;z-index:50;max-width:calc(100% - 32px);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.toast.is-on{opacity:1;transform:translate(-50%,0)}

@media (max-width:860px){
  .panel{max-width:none;border-right:none;border-bottom:1px solid var(--line)}
  .types{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:640px){
  .topbar{padding:14px 16px}
  .actions{width:100%}
  .actions .btn{flex:1}
  .panel{padding:20px 16px 28px}
  .stage{padding:16px 16px 32px}
  .viewer{padding:10px;border-radius:14px}
  .v-side{grid-template-columns:minmax(0,1fr)}
  .v-all{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
  .types{grid-template-columns:minmax(0,1fr)}
  .card{padding:16px 12px 18px}
  .ta{font-size:16px}
  .pal{min-width:0;border-spacing:4px;table-layout:fixed}
  .pal th{font-size:10.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .sw{height:44px;padding:4px 5px;font-size:9px;border-radius:8px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none !important;animation:none !important}
}

/* 다크 모드 (인쇄는 라이트 그대로) — 이미지 결과 영역과 색 견본은 그대로 */
@media screen{
  :root[data-theme="dark"]{
    color-scheme:dark;
    --bg:#161316; --surface:#1c181c; --panel:#211d21; --panel-soft:#272227;
    --ink:#efeaee; --ink-hover:#ffffff; --ink-2:#cdc5cb; --sub:#a59ca3; --muted:#8f868d;
    --line:#312b30; --line-2:#3d363c; --line-3:#29242a; --hover:#2e282d; --soft:#29242a; --track:#383137;
    --accent:#ff7fae; --accent-soft:rgba(255,127,174,.15); --on-accent:#1d1218;
    --warn:#ffc46b; --err:#ff8a80;
  }
  :root[data-theme="dark"] .toast,:root[data-theme="dark"] .tb-presets button[aria-pressed="true"]{color:var(--bg)}
  :root[data-theme="dark"] .seg-btn[aria-pressed="true"]{background:var(--line-2);box-shadow:0 1px 3px rgba(0,0,0,.4)}
  :root[data-theme="dark"] .viewer{background:#2a262a}
  :root[data-theme="dark"] .fig figcaption{color:#e6e0e5}
  :root[data-theme="dark"] .fig figcaption small{color:#a59ca3}
  :root[data-theme="dark"] .fig-c{background:#3a3439}
}