: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:#1f7a55; --accent-soft:#e6f2ec;
  --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}
code{font-family:var(--mono);font-size:.9em;background:var(--soft);padding:1px 5px;border-radius:4px}
.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}
.note,.hint{font-size:12px;line-height:1.6;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}
.home{font-size:13px;color:var(--ink-2);text-decoration:none}
.home:hover{color:var(--ink)}
.brand-title{font-size:17px;font-weight:700;letter-spacing:-.01em}
.actions{display:flex;align-items:center;gap:8px}
.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--solid{padding:0 20px;background:var(--ink);color:#fff;border:none;font-weight:500}
.btn--solid:hover{background:var(--ink-hover)}
.text-input{height:40px;padding:0 12px;background:var(--surface);border:1px solid var(--line-2);border-radius:8px;font:inherit;font-size:14px;color:var(--ink)}
.link{padding:4px 0;background:transparent;border:none;font-size:13px;font-weight:500;color:var(--accent);cursor:pointer}
.link:hover{text-decoration:underline;text-underline-offset:3px}
kbd{font-family:var(--mono);font-size:11px;padding:1px 6px;border:1px solid var(--line-2);border-bottom-width:2px;border-radius:5px;background:#fff;color:var(--ink-2)}

/* 레이아웃 */
.layout{flex:1;display:flex;flex-wrap:wrap;align-items:flex-start}
.panel{flex:1 1 340px;max-width:100%;min-width:0;align-self:stretch;background:var(--panel);border-right:1px solid var(--line);padding:24px 24px 40px;display:flex;flex-direction:column;gap:26px}
@media (min-width:900px){ .panel{flex:0 0 380px} }
.stage{flex:999 1 420px;min-width:0;padding:32px 40px 56px;display:flex;flex-direction:column;gap:16px;align-items:stretch}
.group{display:flex;flex-direction:column;gap:12px}
.group--line{border-top:1px solid var(--line-3);padding-top:22px}

.seg{display:flex;background:var(--soft);border-radius:999px;padding:3px;gap:2px}
.seg-btn{flex:1;height:32px;padding:0 8px;background:transparent;color:var(--sub);border:none;border-radius:999px;font-size:13px;cursor:pointer;white-space:nowrap}
.seg-btn.is-active{background:#fff;color:var(--ink);box-shadow:0 1px 3px rgba(0,0,0,.12);font-weight:500}
.seg-btn:disabled{opacity:.35;cursor:default}

.styles{display:grid;grid-template-columns:1fr 1fr;gap:6px}
.style-btn{position:relative;text-align:left;padding:11px 12px 10px;background:#fff;border:1px solid var(--line-2);border-radius:12px;cursor:pointer;display:flex;flex-direction:column;gap:3px;transition:border-color .15s,background .15s}
.style-btn:hover{border-color:var(--sub)}
.style-btn.is-active{background:var(--ink);border-color:var(--ink);color:#fff}
.style-name{font-size:14px;font-weight:500}
.style-desc{font-size:11px;opacity:.65;line-height:1.4}
.styles.is-disabled{opacity:.4;pointer-events:none}

.unit-note{margin:0;font-size:12px;color:var(--accent);background:var(--accent-soft);padding:8px 10px;border-radius:8px}
.count-row{display:flex;align-items:center;gap:8px}
.step{flex:0 0 auto;width:44px;height:48px;border:1px solid var(--line-2);border-radius:12px;background:#fff;font-size:20px;cursor:pointer}
.step:hover{background:var(--hover)}
.count{position:relative;flex:1;display:block;min-width:0}
.count input{width:100%;height:48px;padding:0 64px 0 16px;background:var(--surface);border:1px solid var(--line-2);border-radius:12px;font-family:var(--mono);font-size:22px;font-weight:700;color:var(--ink);-moz-appearance:textfield;appearance:textfield}
.count input::-webkit-outer-spin-button,.count input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}
.count input:focus{outline:none;border-color:var(--accent);background:#fff;box-shadow:0 0 0 3px rgba(31,122,85,.14)}
.count-u{position:absolute;right:14px;top:50%;transform:translateY(-50%);font-size:13px;color:var(--muted);pointer-events:none}
.chips{display:flex;flex-wrap:wrap;gap:6px}
.chip{height:30px;padding:0 12px;border:1px solid var(--line-2);border-radius:999px;background:#fff;font-family:var(--mono);font-size:12px;cursor:pointer;color:var(--ink-2)}
.chip:hover{border-color:var(--ink)}
.chip.is-active{background:var(--accent);border-color:var(--accent);color:#fff}

.check{display:flex;align-items:flex-start;gap:8px;font-size:13px;color:var(--ink-2);cursor:pointer;line-height:1.5}
.check input{width:16px;height:16px;margin:2px 0 0;accent-color:var(--accent);flex:0 0 auto}
.check small{color:var(--muted)}
.sep-row{display:flex;flex-direction:column;gap:6px;font-size:13px;color:var(--ink-2)}
.select{height:40px;padding:0 10px;background:var(--surface);color:var(--ink);border:1px solid var(--line-2);border-radius:8px;font:inherit;font-size:14px;max-width:100%}

/* 통계 */
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;max-width:820px;width:100%;margin:0 auto}
.stat{display:flex;flex-direction:column;gap:4px;padding:12px 14px;background:var(--panel);border:1px solid var(--line);border-radius:14px;min-width:0}
.stat-k{font-size:11px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.stat-v{font-family:var(--mono);font-size:24px;font-weight:700;letter-spacing:-.02em}
.stat:first-child .stat-v{color:var(--accent)}

/* 원고지 느낌 출력 */
.paper{position:relative;max-width:820px;width:100%;margin:0 auto;background:#fffefb;border:1px solid var(--line);border-radius:6px 6px 18px 18px;box-shadow:0 1px 2px rgba(0,0,0,.04),0 24px 50px -28px rgba(40,36,28,.3);padding:22px 40px 40px}
.paper::before{content:"";position:absolute;left:24px;top:0;bottom:0;width:1px;background:rgba(214,92,92,.25)}
.paper-head{display:flex;justify-content:space-between;align-items:center;gap:12px;padding-bottom:14px;margin-bottom:18px;border-bottom:1px dashed var(--line-2)}
.out{font-size:16px;line-height:1.85;color:var(--ink);word-break:keep-all;overflow-wrap:anywhere}
.out p{margin:0 0 1.1em}
.out p:last-child{margin-bottom:0}
.out.is-list{display:flex;flex-direction:column;gap:0}
.out .item{display:flex;gap:14px;padding:7px 0;border-bottom:1px solid var(--line-3);line-height:1.5}
.out .item:last-child{border-bottom:none}
.out .item i{flex:0 0 28px;font-style:normal;font-family:var(--mono);font-size:12px;color:var(--muted);padding-top:2px}
.out .item span{min-width:0}
.out.is-labels{flex-direction:row;flex-wrap:wrap;gap:8px}
.out.is-labels .tag{display:inline-flex;align-items:center;height:34px;padding:0 14px;border:1px solid var(--line-2);border-radius:999px;font-size:14px;background:#fff;line-height:1}
.out.is-code{font-family:var(--mono);font-size:13px;line-height:1.75;white-space:pre-wrap;color:var(--ink-2);word-break:break-all}
.out.is-code .tg{color:var(--accent)}
.out.appear{animation:appear .3s ease}
@keyframes appear{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.stage .hint{text-align:center}

/* 토스트 */
.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:640px){
  .topbar{padding:14px 16px}
  .panel{border-right:none;border-bottom:1px solid var(--line);padding:22px 16px 28px}
  .stage{padding:20px 16px 48px}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .paper{padding:18px 18px 28px 30px}
  .paper::before{left:16px}
  .stage .hint{display:none}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none !important;animation:none !important}
}

/* 다크 모드 (인쇄는 라이트 그대로) — 출력은 텍스트라 어두운 종이로 (복사되는 내용은 동일) */
@media screen{
  :root[data-theme="dark"]{
    color-scheme:dark;
    --bg:#131514; --surface:#191b1a; --panel:#1e201f; --panel-soft:#232524;
    --ink:#eaedeb; --ink-hover:#ffffff; --ink-2:#c6cbc8; --sub:#9da39f; --muted:#88908b;
    --line:#2c302e; --line-2:#373b39; --line-3:#252827; --hover:#282b29; --soft:#242726; --track:#323634;
    --accent:#52c795; --accent-soft:rgba(82,199,149,.14);
  }
  :root[data-theme="dark"] .btn--solid,:root[data-theme="dark"] .style-btn.is-active,:root[data-theme="dark"] .chip.is-active,
  :root[data-theme="dark"] .toast,:root[data-theme="dark"] .tb-presets button[aria-pressed="true"]{color:var(--bg)}
  :root[data-theme="dark"] kbd,:root[data-theme="dark"] .step,:root[data-theme="dark"] .out.is-labels .tag{background:var(--panel)}
  :root[data-theme="dark"] .chip:not(.is-active),:root[data-theme="dark"] .style-btn:not(.is-active){background:var(--panel)}
  :root[data-theme="dark"] .step:hover{background:var(--hover)}
  :root[data-theme="dark"] .seg-btn.is-active{background:var(--line-2);box-shadow:0 1px 3px rgba(0,0,0,.4)}
  :root[data-theme="dark"] .count input:focus{background:var(--panel);box-shadow:0 0 0 3px rgba(82,199,149,.18)}
  :root[data-theme="dark"] .paper{background:#1c1e1d;box-shadow:0 24px 50px -28px rgba(0,0,0,.6)}
  :root[data-theme="dark"] .paper::before{background:rgba(240,120,120,.28)}
}