:root{--accent:#1d7a4f;--accent-deep:#15603d;--accent-soft:rgba(29,122,79,.13)}
: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;
  --paper:#ffffff; --danger:#c92a2a; --ok:#1d7a4f; --dup:#fff3d6; --dup-ink:#7a5300; --mark:#e6f4ec;
  --font:"IBM Plex Sans KR",sans-serif; --mono:"JetBrains Mono",monospace;
  --shadow-paper:0 1px 1px rgba(30,25,15,.06),0 6px 16px rgba(30,25,15,.08);
}
*{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,input,select,textarea{font:inherit;color:inherit}
.mono-label{font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:var(--muted)}
.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;gap:8px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;height:36px;padding:0 14px;background:transparent;border:1px solid var(--line-2);border-radius:999px;font-size:13px;cursor:pointer;white-space:nowrap;text-decoration:none;color:var(--ink);transition:background .15s,border-color .15s,transform .1s}
.btn:hover{background:var(--hover)}
.btn:active{transform:scale(.97)}
.btn:disabled{opacity:.4;cursor:default;transform:none}
.btn:disabled:hover{background:transparent}
.btn--solid{background:var(--ink);color:#fff;border-color:var(--ink);font-weight:500}
.btn--solid:hover{background:var(--ink-hover)}
.btn--accent{background:var(--accent);color:#fff;border-color:var(--accent);font-weight:500}
.btn--accent:hover{background:var(--accent-deep)}
.btn--accent:disabled:hover{background:var(--accent)}
.btn--big{height:48px;padding:0 22px;font-size:15px}
.btn--sm{height:30px;padding:0 11px;font-size:12px}
.text-input{height:36px;width:100%;padding:0 12px;background:var(--surface);border:1px solid var(--line-2);border-radius:8px;font-size:13.5px;color:var(--ink)}
.text-input:focus{outline:none;border-color:var(--ink)}
.text-input--mono{font-family:var(--mono);font-size:13px}
select.text-input{padding-right:28px;appearance:none;-webkit-appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--ink-2) 50%),linear-gradient(135deg,var(--ink-2) 50%,transparent 50%);background-position:calc(100% - 15px) 15px,calc(100% - 10px) 15px;background-size:5px 5px;background-repeat:no-repeat;cursor:pointer}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

.shell{width:100%;max-width:1240px;margin:0 auto;padding:28px 28px 56px}

/* 드롭존 (표 종이) */
.drop{position:relative;display:grid;grid-template-columns:auto 1fr;align-items:center;gap:28px;padding:36px 44px;background:
  radial-gradient(circle at 1px 1px,rgba(0,0,0,.07) 1px,transparent 1.4px) 0 0/18px 18px,var(--surface);
  border:1.5px dashed var(--line-2);border-radius:20px;cursor:pointer;transition:border-color .15s,background-color .15s,transform .15s}
.drop:hover,.drop:focus-within{border-color:var(--accent)}
.drop.is-over{border-color:var(--accent);border-style:solid;background-color:var(--accent-soft);transform:scale(1.005)}
.drop input[type=file]{position:absolute;width:1px;height:1px;opacity:0;pointer-events:none}
.drop-art{position:relative;width:118px;height:110px;flex:none}
.drop-grid{position:absolute;left:4px;top:6px;width:104px;height:86px;border-radius:7px;background:
  linear-gradient(var(--line-2),var(--line-2)) 0 21px/100% 1px no-repeat,
  repeating-linear-gradient(0deg,transparent 0 20px,var(--line-3) 20px 21px),
  repeating-linear-gradient(90deg,transparent 0 34px,var(--line-3) 34px 35px),var(--paper);
  border:1px solid var(--line-2);box-shadow:var(--shadow-paper);transform:rotate(-3deg);transition:transform .35s cubic-bezier(.2,.8,.2,1)}
.drop-grid::before{content:"";position:absolute;left:0;top:0;right:0;height:21px;background:var(--accent-soft);border-radius:6px 6px 0 0}
.drop:hover .drop-grid,.drop.is-over .drop-grid{transform:rotate(-6deg) translate(-3px,-3px)}
.drop-tag{position:absolute;right:0;bottom:4px;padding:4px 8px;background:var(--accent);color:#fff;font-family:var(--mono);font-size:11px;font-weight:500;letter-spacing:.08em;border-radius:5px;box-shadow:0 4px 10px var(--accent-soft)}
.drop-body{display:block;min-width:0}
.drop-title,.drop-sub{display:block}
.drop-title{margin:0 0 6px;font-size:22px;font-weight:700;letter-spacing:-.02em}
.drop-sub{margin:0 0 18px;color:var(--ink-2);font-size:14px;line-height:1.6}
.drop-cta{display:flex;align-items:center;gap:12px;flex-wrap:wrap}

.safe-note{display:flex;align-items:flex-start;gap:8px;margin:14px 2px 0;font-size:12.5px;line-height:1.55;color:var(--sub)}
.safe-note svg{flex:none;margin-top:2px;color:var(--ok)}
.safe-note b{color:var(--ink-2);font-weight:500}
.lib-note{display:block;font-family:var(--mono);font-size:10.5px;letter-spacing:.04em;color:var(--muted);margin-top:4px}

.alert{display:flex;gap:10px;align-items:flex-start;margin:14px 0 0;padding:12px 14px;border-radius:12px;font-size:13.5px;line-height:1.55;white-space:pre-line}
.alert--error{background:#fff4f2;border:1px solid #f3c9c1;color:#8f2412}
.alert--warn{background:#fff9eb;border:1px solid #f0dca8;color:#7a5300}
.alert--info{background:var(--panel-soft);border:1px solid var(--line);color:var(--ink-2)}
.alert::before{content:"!";flex:none;display:grid;place-items:center;width:18px;height:18px;margin-top:1px;border-radius:50%;background:currentColor;color:#fff;font-family:var(--mono);font-size:11px;font-weight:700}
.alert--error::before{background:#c0391f}
.alert--warn::before{background:#c78a00}
.alert--info::before{content:"i";background:var(--ink-2)}

/* 작업 영역 */
.work{margin-top:18px;display:flex;flex-direction:column;gap:14px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:16px 18px}
.card-head{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;margin:0 0 12px}
.card-title{margin:0;font-size:14px;font-weight:700}
.file-line{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.file-ico{flex:none;width:38px;height:44px;border-radius:6px;background:var(--accent-soft);color:var(--accent);display:grid;place-items:center;font-family:var(--mono);font-size:10px;font-weight:700;letter-spacing:.05em}
.file-name{font-weight:700;font-size:14px;word-break:break-all}
.file-meta{font-size:12px;color:var(--sub);font-family:var(--mono)}
.file-line .btn{margin-left:auto}
.opts{display:flex;flex-wrap:wrap;gap:12px 18px;align-items:center}
.opt{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-2)}
.opt-label{font-size:12.5px;color:var(--sub);white-space:nowrap}
.seg{display:inline-flex;background:var(--soft);border:1px solid var(--line);border-radius:999px;padding:3px;gap:2px;flex-wrap:wrap}
.seg-btn{height:28px;padding:0 12px;border:none;border-radius:999px;background:transparent;cursor:pointer;font-size:12.5px;color:var(--ink-2);white-space:nowrap}
.seg-btn:hover{color:var(--ink)}
.seg-btn[aria-pressed="true"]{background:var(--panel);color:var(--ink);font-weight:600;box-shadow:0 1px 3px rgba(0,0,0,.1)}
.toggle{display:inline-flex;align-items:center;gap:8px;height:34px;padding:0 12px 0 8px;border:1px solid var(--line);border-radius:999px;background:var(--panel);font-size:12.5px;cursor:pointer;user-select:none}
.toggle input{appearance:none;-webkit-appearance:none;flex:none;width:28px;height:16px;border-radius:999px;background:var(--line-2);position:relative;margin:0;cursor:pointer;transition:background .15s}
.toggle input::after{content:"";position:absolute;top:2px;left:2px;width:12px;height:12px;border-radius:50%;background:#fff;transition:transform .15s}
.toggle input:checked{background:var(--accent)}
.toggle input:checked::after{transform:translateX(12px)}
.row-actions{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.row-actions .push{margin-left:auto}
.stat{font-size:13px;color:var(--ink-2)}
.stat b{font-family:var(--mono);color:var(--ink);font-weight:600}
.badge{display:inline-flex;align-items:center;height:22px;padding:0 8px;border-radius:6px;font-family:var(--mono);font-size:11px;font-weight:700;letter-spacing:.04em;background:var(--soft);color:var(--ink-2)}
.badge--ok{background:#dcf2e5;color:#15603d}
.badge--warn{background:#fff1cc;color:#8a5a00}
.hint{margin:0;font-size:12.5px;color:var(--sub);line-height:1.6}

/* 표 미리보기 */
.tbl-wrap{max-height:520px;overflow:auto;border:1px solid var(--line);border-radius:12px;background:var(--panel)}
.tbl{border-collapse:separate;border-spacing:0;font-size:12.5px;min-width:100%}
.tbl th,.tbl td{padding:6px 10px;border-right:1px solid var(--line-3);border-bottom:1px solid var(--line-3);text-align:left;white-space:pre;max-width:320px;overflow:hidden;text-overflow:ellipsis;vertical-align:top}
.tbl thead th{position:sticky;top:0;z-index:2;background:var(--soft);font-weight:700;color:var(--ink);border-bottom:1px solid var(--line-2)}
.tbl thead th.is-dim{color:var(--muted);font-family:var(--mono);font-weight:500}
.tbl .tbl-n{position:sticky;left:0;z-index:1;background:var(--panel-soft);color:var(--muted);font-family:var(--mono);font-size:11px;text-align:right;min-width:42px}
.tbl thead .tbl-n{z-index:3;background:var(--soft)}
.tbl tbody tr:hover td{background:var(--hover)}
.tbl-empty,.tbl-more{margin:0;padding:14px;font-size:12.5px;color:var(--sub)}
.tbl-more{border-top:1px solid var(--line-3)}

.toast{position:fixed;left:50%;bottom:28px;z-index:2000;transform:translate(-50%,20px);max-width:calc(100% - 32px);padding:11px 18px;border-radius:999px;background:var(--ink);color:#fff;font-size:13px;opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;box-shadow:0 10px 30px rgba(0,0,0,.2)}
.toast.is-show{opacity:1;transform:translate(-50%,0)}
.toast--error{background:#a61e1e}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important}
}
@media (max-width:640px){
  .topbar{padding:14px 16px}
  .shell{padding:18px 16px 40px}
  .drop{grid-template-columns:1fr;justify-items:center;text-align:center;padding:26px 18px;gap:16px}
  .drop-cta{justify-content:center}
  .drop-title{font-size:19px}
  .card{padding:14px}
  .file-line .btn{margin-left:0}
  .row-actions .push{margin-left:0}
  .tbl-wrap{max-height:420px}
}

@media screen{
  :root[data-theme="dark"]{
    color-scheme:dark;
    --bg:#141318; --surface:#1a1920; --panel:#1f1e26; --panel-soft:#24232c;
    --ink:#ecebf0; --ink-hover:#ffffff; --ink-2:#c9c7d1; --sub:#a09eab; --muted:#8a8895;
    --line:#2e2d36; --line-2:#393843; --line-3:#2a2931; --hover:#2a2932; --soft:#26252d; --track:#34333d;
    --paper:#2c2b35; --danger:#ff7b7b; --ok:#5fd18e; --dup:rgba(240,180,40,.14); --dup-ink:#f0cf7f; --mark:rgba(95,209,142,.12);
    --accent:#5fd18e; --accent-deep:#1d7a4f; --accent-soft:rgba(95,209,142,.14);
    --shadow-paper:0 1px 1px rgba(0,0,0,.3),0 6px 16px rgba(0,0,0,.35);
  }
  :root[data-theme="dark"] .btn--solid,:root[data-theme="dark"] .toast{color:var(--bg)}
  :root[data-theme="dark"] .toast--error{color:#fff}
  :root[data-theme="dark"] .btn--accent{background:#1d7a4f;border-color:#1d7a4f;color:#fff}
  :root[data-theme="dark"] .btn--accent:hover{background:#238a5a}
  :root[data-theme="dark"] .drop{background:radial-gradient(circle at 1px 1px,rgba(255,255,255,.06) 1px,transparent 1.4px) 0 0/18px 18px,var(--surface)}
  :root[data-theme="dark"] .drop.is-over{background-color:var(--accent-soft)}
  :root[data-theme="dark"] .drop-tag{background:#1d7a4f;box-shadow:0 4px 10px rgba(0,0,0,.3)}
  :root[data-theme="dark"] .alert--error{background:rgba(255,90,70,.1);border-color:rgba(255,110,90,.3);color:#ffb4a6}
  :root[data-theme="dark"] .alert--warn{background:rgba(240,180,40,.1);border-color:rgba(240,190,80,.3);color:#f0cf7f}
  :root[data-theme="dark"] .alert::before{color:var(--bg)}
  :root[data-theme="dark"] .alert--error::before{background:#ff8a75}
  :root[data-theme="dark"] .alert--warn::before{background:#e8b440}
  :root[data-theme="dark"] .seg-btn[aria-pressed="true"]{background:var(--track);box-shadow:0 1px 3px rgba(0,0,0,.4)}
  :root[data-theme="dark"] .badge--ok{background:rgba(95,209,142,.16);color:#8fe3b3}
  :root[data-theme="dark"] .badge--warn{background:rgba(240,180,40,.16);color:#f0cf7f}
  :root[data-theme="dark"] .file-ico{color:#8fe3b3}
  :root[data-theme="dark"] .toggle input::after{background:#ecebf0}
}

/* 공통 보조 */
.sel{width:auto;min-width:150px;max-width:100%}
.card .opts + .hint,.card .hint + .row-actions,.card .opts + .row-actions,.card .chips + .hint{margin-top:12px}
.card .hint + .opts{margin-top:12px}
.push{flex:1 1 auto}
.prev-head{margin:6px 2px 0}
.code-area{display:block;width:100%;min-height:300px;resize:vertical;padding:12px 14px;background:var(--surface);border:1px solid var(--line-2);border-radius:10px;font-family:var(--mono);font-size:12.5px;line-height:1.6;color:var(--ink);tab-size:8;white-space:pre;overflow:auto}
.code-area:focus{outline:none;border-color:var(--accent)}
.code-area[readonly]{background:var(--panel-soft)}
.drop.is-busy{pointer-events:none;opacity:.7}

/* ---------- 표 → 마크다운 ---------- */
.panes{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:14px;margin-top:4px}
.pane{display:flex;flex-direction:column;gap:12px;min-width:0}
.pane .card-head{margin:0}
.pane .code-area{flex:1;min-height:340px}
.pane.is-over{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.pane .stat{margin:0}
.pane .opts{gap:8px 10px}
#mdOpts,#jsonOpts{display:inline-flex;gap:8px;align-items:center;flex-wrap:wrap}
#mdOpts[hidden],#jsonOpts[hidden],#alignOpts[hidden]{display:none !important}
.seg-btn:disabled{opacity:.4;cursor:default}
.prev-head{margin-top:18px}
.md-preview{padding:0}
.md-preview table{border-collapse:separate;border-spacing:0;font-size:13px;min-width:100%}
.md-preview th,.md-preview td{padding:7px 12px;border-right:1px solid var(--line-3);border-bottom:1px solid var(--line-3);text-align:left;vertical-align:top}
.md-preview thead th{position:sticky;top:0;background:var(--soft);font-weight:700}
.md-preview tbody tr:nth-child(even) td{background:var(--panel-soft)}
.shell > .safe-note{margin-top:16px}
@media (max-width:900px){
  .panes{grid-template-columns:1fr}
  .pane .code-area{min-height:220px}
}

/* 툴 한계 안내 (안심 문구 아래) */
.limit-note{margin-top:6px}
.limit-note svg{color:#d08a1e}
.limit-note a{color:inherit;text-decoration:underline}