: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:#c8331f; /* 활판 인쇄 레드 */
  --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)}
.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{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{background:var(--ink);color:#fff;border:none;font-weight:500}
.btn--solid:hover{background:var(--ink-hover)}
.btn--sm{height:30px;padding:0 12px;font-size:12px}
.select{height:38px;padding:0 8px;border:1px solid var(--line-2);border-radius:8px;background:var(--surface);font:inherit;font-size:13px;color:var(--ink);width:100%;min-width:0}
.select:focus{outline:none;border-color:var(--ink)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

.fp{width:100%;max-width:1320px;margin:0 auto;padding:28px 28px 56px;display:flex;flex-direction:column;gap:26px}

/* ---------- Presets (specimen cards) ---------- */
.sec-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:12px;border-bottom:2px solid var(--ink);padding-bottom:8px}
.sec-title{margin:0;font-size:15px;font-weight:700}
.presets{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:10px}
.pc{position:relative;display:flex;flex-direction:column;align-items:flex-start;gap:6px;text-align:left;padding:14px 14px 12px;border:1px solid var(--line);border-radius:12px;background:var(--panel);cursor:pointer;min-height:132px;transition:border-color .15s,transform .15s,box-shadow .15s}
.pc:hover{border-color:var(--ink);transform:translateY(-2px);box-shadow:0 8px 20px -12px rgba(0,0,0,.3)}
.pc.is-on{border-color:var(--accent);box-shadow:inset 0 0 0 1px var(--accent)}
.pc.is-on .pc-name{color:var(--accent)}
.pc.is-on .pc-name::before{content:"✓ 사용 중 · "}
.pc-glyph{font-size:34px;line-height:1.1;letter-spacing:-.02em;color:var(--ink)}
.pc-body{font-size:12.5px;color:var(--ink-2);line-height:1.5}
.pc-name{margin-top:auto;font-size:12px;font-weight:700;color:var(--ink)}
.pc-fonts{font-family:var(--mono);font-size:10px;letter-spacing:.02em;color:var(--muted);line-height:1.4}

/* ---------- Studio ---------- */
.studio{display:grid;grid-template-columns:300px minmax(0,1fr);gap:24px;align-items:start}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:6px 18px;position:sticky;top:16px}
.fs{border:none;margin:0;padding:16px 0;border-bottom:1px solid var(--line-3);display:flex;flex-direction:column;gap:10px;min-width:0}
.fs--last{border-bottom:none}
.fs legend{font-size:13px;font-weight:700;padding:0;margin-bottom:10px;display:flex;align-items:center;gap:8px;float:left;width:100%}
.fs legend+*{clear:both}
.tag{display:inline-grid;place-items:center;width:20px;height:20px;border-radius:5px;background:var(--accent);color:#fff;font-family:var(--mono);font-size:11px}
.tag--b{background:var(--ink)}
.pick{display:grid;grid-template-columns:minmax(0,1fr) 118px;gap:6px}
.sl{display:flex;flex-direction:column;gap:3px}
.sl label{display:flex;justify-content:space-between;font-size:12.5px;color:var(--ink-2)}
.sl output{font-family:var(--mono);font-size:11.5px;color:var(--ink)}
.sl-head{display:flex;justify-content:space-between;align-items:center;gap:8px;font-size:12.5px;color:var(--ink-2)}
/* 슬라이더 직접 입력칸 · 단계 버튼: 단위 자리를 고정 폭으로 둬 입력칸 끝을 맞춤 */
.sl-head .tb-num{height:26px;width:58px;padding:0 6px;font-size:12px;color:var(--ink);border-color:var(--line-2);background:var(--surface)}
.sl-head .tb-num-wrap{width:76px;font-family:var(--mono);font-size:11px;color:var(--muted);gap:3px}
.sl-head > .tb-num{margin-right:18px}
.sl .tb-presets{margin-top:2px;gap:4px}
.sl .tb-presets button{height:26px;min-width:0;padding:0 9px;font-size:11.5px;border-color:var(--line-2)}
@media (pointer:coarse){.sl-head .tb-num{height:32px;width:64px;font-size:16px}.sl-head .tb-num-wrap{width:82px}.sl .tb-presets button{height:30px}}
input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:20px;background:transparent;margin:0;cursor:pointer}
input[type=range]::-webkit-slider-runnable-track{height:2px;background:var(--ink)}
input[type=range]::-moz-range-track{height:2px;background:var(--ink)}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:14px;height:14px;margin-top:-6px;border-radius:50%;background:var(--accent);border:3px solid var(--panel);box-shadow:0 0 0 1px var(--accent)}
input[type=range]::-moz-range-thumb{width:10px;height:10px;border-radius:50%;background:var(--accent);border:3px solid var(--panel)}
.seg{display:flex;background:var(--soft);border-radius:999px;padding:3px;gap:2px}
.seg-btn{flex:1;height:30px;border:none;border-radius:999px;background:transparent;cursor:pointer;font-size:12.5px;color:var(--ink-2)}
.seg-btn.is-on{background:#fff;color:var(--ink);box-shadow:0 1px 3px rgba(0,0,0,.12)}
.check{display:flex;align-items:flex-start;gap:8px;font-size:12.5px;color:var(--ink-2);cursor:pointer;line-height:1.45}
.check input{accent-color:var(--accent);width:16px;height:16px;margin:1px 0 0;flex:none}

.sheet-col{display:flex;flex-direction:column;gap:12px;min-width:0}
.status{display:flex;flex-wrap:wrap;gap:6px;min-height:26px}
.st{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 10px;border-radius:999px;font-size:12px;background:var(--panel);border:1px solid var(--line)}
.st i{width:7px;height:7px;border-radius:50%;background:var(--muted)}
.st.is-loading i{background:#e0a100;animation:pulse 1s infinite}
.st.is-ok i{background:#2f9e44}
.st.is-fail{border-color:#f1c0b8;background:#fff6f4;color:#a2321f}
.st.is-fail i{background:var(--accent)}
@keyframes pulse{50%{opacity:.3}}

/* 샘플 시트 — 글꼴 값은 #pairCss 에서 주입 */
.sheet{--paper:#fbf8f1;--t:#1d1b17;--t2:#4b4840;--rule:#e2dccf;--btn:#1d1b17;--btnT:#fff;
  background:var(--paper);color:var(--t);border-radius:6px;padding:56px 60px 52px;border:1px solid var(--line);
  box-shadow:0 1px 2px rgba(0,0,0,.05),0 24px 50px -30px rgba(60,40,10,.35);overflow-wrap:break-word;min-width:0}
.sheet[data-theme="white"]{--paper:#ffffff;--t:#111;--t2:#4a4a4a;--rule:#e8e8e8}
.sheet[data-theme="dark"]{--paper:#17171a;--t:#f2f1ee;--t2:#b9b6ae;--rule:#2e2e33;--btn:#f2f1ee;--btnT:#17171a;border-color:#2e2e33}
.sheet [contenteditable]:focus{outline:1px dashed var(--accent);outline-offset:4px}
.s-eyebrow{margin:0 0 18px;font-family:var(--mono);font-size:11px;letter-spacing:.16em;color:var(--accent)}
.s-h1{margin:0 0 18px;max-width:20em}
.s-lead{margin:0 0 14px;color:var(--t);max-width:38em}
.s-body{margin:0 0 26px;color:var(--t2);max-width:38em}
.s-btns{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:34px}
.s-btn{display:inline-flex;align-items:center;height:46px;padding:0 22px;border-radius:999px;border:1.5px solid var(--btn);color:var(--btn)}
.s-btn--solid{background:var(--btn);color:var(--btnT)}
.s-cards{display:grid;grid-template-columns:1fr 1fr;gap:14px;padding-top:24px;border-top:1px solid var(--rule)}
.s-card{display:flex;flex-direction:column;gap:6px;min-width:0}
.s-h3{margin:0}
.s-small{margin:0;color:var(--t2)}
.hint{margin:0;font-size:12px;color:var(--sub)}

.code-card{background:#1d1b17;border-radius:14px;overflow:hidden;color:#efeae0}
.code-head{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:10px 12px;border-bottom:1px solid #34312a;flex-wrap:wrap}
.code-head .btn{color:#fff;border-color:#4a463d}
.code-head .btn:hover{background:#2c2a24}
.tabs{display:flex;gap:4px;flex-wrap:wrap}
.tab{height:30px;padding:0 12px;border-radius:999px;border:none;background:transparent;color:#a9a397;font-size:12.5px;cursor:pointer}
.tab.is-on{background:#34312a;color:#fff}
.code{margin:0;padding:16px 18px;max-height:340px;overflow:auto;font-family:var(--mono);font-size:12.5px;line-height:1.7;white-space:pre-wrap;word-break:break-all}
.code .k{color:#ff9b85}.code .p{color:#9fd3ff}.code .s{color:#c9e7a5}.code .c{color:#7d776b}

.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}
.toast.is-on{opacity:1;transform:translate(-50%,0)}

@media (max-width:960px){
  .studio{display:flex;flex-direction:column;gap:12px}
  .panel{position:static}
  .sheet-col{display:contents}
  .status{order:1}.sheet{order:2}.hint{order:3}.panel{order:4;margin-top:8px}.code-card{order:5;margin-top:8px}
}
@media (max-width:640px){
  .topbar{padding:14px 16px}
  .fp{padding:16px 16px 40px;gap:20px}
  .presets{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;margin:0 -16px;padding:2px 16px 8px;gap:8px}
  .pc{flex:0 0 168px;scroll-snap-align:start}
  .pc-glyph{font-size:28px;white-space:nowrap}
  .sheet{padding:30px 22px 28px}
  .s-cards{grid-template-columns:1fr}
  .panel{padding:4px 16px}
}
@media (prefers-reduced-motion:reduce){
  .pc,.toast{transition:none}
  .st.is-loading i{animation:none}
}

/* 다크 모드 (인쇄는 라이트 그대로) — 샘플 시트는 사용자가 고른 종이/흰색/어둡게 그대로 */
@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:#26252d; --hover:#2a2932; --soft:#26252d; --track:#34333d;
    --accent:#ff6a52; --accent-soft:rgba(255,106,82,.16);
  }
  :root[data-theme="dark"] .btn--solid,
  :root[data-theme="dark"] .tag,
  :root[data-theme="dark"] .toast,
  :root[data-theme="dark"] .tb-presets button[aria-pressed="true"]{color:var(--bg)}
  :root[data-theme="dark"] .seg-btn.is-on{background:var(--track);box-shadow:0 1px 3px rgba(0,0,0,.4)}
  :root[data-theme="dark"] .pc:hover{box-shadow:0 8px 20px -12px rgba(0,0,0,.6)}
  :root[data-theme="dark"] .st.is-loading i{background:#f0b429}
  :root[data-theme="dark"] .st.is-ok i{background:#4fc46a}
  :root[data-theme="dark"] .st.is-fail{border-color:#6a2c24;background:rgba(255,106,82,.12);color:#ff9a88}
  :root[data-theme="dark"] .sheet{--accent:#c8331f;box-shadow:0 0 0 1px rgba(255,255,255,.04),0 24px 50px -30px rgba(0,0,0,.7)}
  :root[data-theme="dark"] .code-card{box-shadow:0 0 0 1px var(--line)}
}