: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:#0d9467; --accent-soft:#e3f4ec; --warn:#b5541b;
  --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:calc(100vh - 48px);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}
.btn{height:36px;padding:0 14px;background:transparent;border:1px solid var(--line-2);border-radius:999px;font-size:13px;cursor:pointer}
.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:disabled{opacity:.4;cursor:default}
.btn:disabled:hover{background:transparent}
.btn--solid:disabled:hover{background:var(--ink)}
.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)}
@media (max-width:640px){ .topbar{padding:14px 16px} }

/* ---------- 공통 ---------- */
.mono{font-family:var(--mono)}
.note{margin:0;font-size:12px;line-height:1.6;color:var(--muted)}
.hint{color:var(--muted)}
.num{font-family:var(--mono);font-size:13px;color:var(--ink-2)}
.actions{display:flex;gap:8px;flex-wrap:wrap}
input[type=range]{width:100%;accent-color:var(--accent)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.text-input:focus{border-color:var(--accent);outline:none;box-shadow:0 0 0 3px var(--accent-soft)}
.textarea{height:auto;padding:10px 12px;line-height:1.6;resize:vertical;min-height:84px}

.libfail{margin:16px 28px 0;padding:12px 16px;border-radius:10px;background:#fdece4;color:#8a3412;font-size:13px;line-height:1.6}
.libfail code{font-family:var(--mono);font-size:12px}

.layout{flex:1;display:flex;flex-wrap:wrap;align-items:flex-start;gap:0;max-width:1180px;width:100%;margin:0 auto}

/* ---------- 에디터 ---------- */
.editor{flex:999 1 440px;min-width:0;padding:32px 28px 40px;display:flex;flex-direction:column;gap:14px}
.types{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:8px}
.type{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;height:76px;padding:0 4px;border:1px solid var(--line);border-radius:14px;background:var(--panel);font-size:13px;color:var(--ink-2);cursor:pointer;transition:border-color .15s,background .15s,transform .15s}
.type svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.type:hover{border-color:var(--ink-2);transform:translateY(-1px)}
.type.is-active{background:var(--ink);border-color:var(--ink);color:#fff}
.type.is-active svg{stroke:#7ee2b8}
.card{display:flex;flex-direction:column;gap:16px;padding:22px;background:var(--panel);border:1px solid var(--line);border-radius:16px}
.form{display:flex;flex-direction:column;gap:14px;animation:fade .25s ease}
.form--grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.field{display:flex;flex-direction:column;gap:6px;min-width:0}
.field .tb-presets{margin-top:2px}
.field--full{grid-column:1 / -1}
.field .text-input{width:100%}
.field-label{font-size:12px;color:var(--ink-2)}
.field-head{display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--ink-2)}
.check{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-2);cursor:pointer}
.check input{width:16px;height:16px;margin:0;accent-color:var(--accent)}

.seg{display:flex;background:var(--soft);border-radius:999px;padding:3px;gap:2px}
.seg-btn{flex:1;height:32px;padding:0 6px;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);font-weight:500;box-shadow:0 1px 3px rgba(0,0,0,.12)}
.seg--ecl .seg-btn{display:flex;align-items:baseline;justify-content:center;gap:4px;font-family:var(--mono)}
.seg--ecl small{font-size:10px;color:var(--muted);font-weight:400}

.colors{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.color-field{display:flex;align-items:center;gap:10px;padding:8px;border:1px solid var(--line-2);border-radius:12px;cursor:pointer;min-width:0}
.color-field:hover{border-color:var(--ink-2)}
.color-field:focus-within{border-color:var(--accent)}
.swatch{position:relative;flex:0 0 auto;width:34px;height:34px;border-radius:9px;box-shadow:inset 0 0 0 1px rgba(0,0,0,.12);overflow:hidden}
.swatch input{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:pointer;border:0;padding:0}
.color-meta{display:flex;flex-direction:column;gap:2px;min-width:0}
.hex{font-size:13px}
.swatch-row{display:flex;flex-wrap:wrap;gap:8px}
.preset{width:36px;height:36px;border-radius:50%;border:2px solid transparent;padding:0;cursor:pointer;box-shadow:0 0 0 1px var(--line-2);transition:transform .15s}
.preset:hover{transform:scale(1.08)}
.preset.is-active{box-shadow:0 0 0 2px var(--ink)}
.warn{margin:0;padding:8px 12px;border-radius:8px;background:#fdf1e7;color:var(--warn);font-size:12px;line-height:1.5}

/* ---------- 미리보기 (티켓) ---------- */
.preview-col{flex:1 1 340px;min-width:280px;padding:32px 28px 40px 0;position:sticky;top:0;display:flex;flex-direction:column;gap:12px}
.ticket{position:relative;background:var(--panel);border-radius:22px;padding:20px 22px 18px;box-shadow:0 1px 2px rgba(0,0,0,.05),0 24px 60px rgba(28,40,32,.12);border:1px solid var(--line)}
.ticket-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}
.live{display:flex;align-items:center;gap:6px;font-family:var(--mono);font-size:10px;letter-spacing:.14em;color:var(--accent)}
.live i{width:6px;height:6px;border-radius:50%;background:var(--accent);animation:pulse 1.6s ease infinite}
.qr-box{position:relative;aspect-ratio:1;border-radius:14px;overflow:hidden;background:repeating-conic-gradient(#f0efea 0 25%,#fff 0 50%) 0 0/16px 16px;display:flex;align-items:center;justify-content:center}
.qr-box canvas{width:100%;height:100%;display:block;image-rendering:pixelated;transition:opacity .2s}
.qr-box.is-empty canvas{opacity:0}
.qr-empty{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;text-align:center;font-size:14px;line-height:1.6;color:var(--muted)}
.qr-box.is-pop canvas{animation:pop .3s ease}
.payload{margin:14px 0 0;font-size:12px;line-height:1.5;color:var(--ink-2);white-space:pre-wrap;word-break:break-all;max-height:4.5em;overflow:hidden}
.perf{position:relative;margin:16px -22px 14px;border-top:2px dashed var(--line-2)}
.perf::before,.perf::after{content:"";position:absolute;top:-12px;width:22px;height:22px;border-radius:50%;background:var(--bg);border:1px solid var(--line)}
.perf::before{left:-12px}
.perf::after{right:-12px}
.specs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin:0}
.specs div{display:flex;flex-direction:column;gap:4px}
.specs dd{margin:0;font-family:var(--mono);font-size:20px;font-weight:500}
.privacy{margin:0;font-size:12px;line-height:1.6;color:var(--muted);display:flex;gap:8px}
.privacy::before{content:"";flex:0 0 auto;width:8px;height:8px;margin-top:6px;border-radius:2px;background:var(--accent)}

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

@keyframes fade{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}
@keyframes pop{from{transform:scale(.97);opacity:.6}to{transform:none;opacity:1}}
@keyframes pulse{50%{opacity:.25}}

@media (max-width:820px){
  .preview-col{position:static;padding:0 16px 40px;order:-1}
  .editor{padding:16px 16px 24px}
  .preview-col{padding-top:20px}
  .ticket{max-width:340px;width:100%;margin:0 auto}
  .privacy{max-width:340px;margin:0 auto}
  .libfail{margin:12px 16px 0}
}
@media (max-width:520px){
  .types{grid-template-columns:repeat(5,minmax(0,1fr));gap:6px}
  .type{height:64px;font-size:12px;border-radius:12px}
  .type svg{width:20px;height:20px}
  .card{padding:16px}
  .form--grid{grid-template-columns:1fr}
  .seg-btn{font-size:12px}
  .specs dd{font-size:16px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition-duration:.01ms !important}
}

/* 직접 입력칸: 단위(px·%·°)는 흐리게, 숫자는 본문색 */
.tb-num-wrap .tb-num{color:var(--ink)}

/* 다크 모드 (인쇄는 라이트 그대로) · QR 코드와 그 뒤 체커(투명 표시)는 결과물이라 밝게 유지 */
@media screen{
  :root[data-theme="dark"]{
    color-scheme:dark;
    --bg:#141513; --surface:#1a1b19; --panel:#1f201e; --panel-soft:#252623;
    --ink:#eceae5; --ink-hover:#ffffff; --ink-2:#c8c6bf; --sub:#a09e96; --muted:#8a8880;
    --line:#2f302c; --line-2:#3a3b36; --line-3:#292a26; --hover:#2b2c28; --soft:#272824; --track:#353631;
    --accent:#3fc493; --accent-soft:rgba(63,196,147,.16); --warn:#f09a63;
  }
  :root[data-theme="dark"] .tb-presets button[aria-pressed="true"]{color:var(--bg)}
  :root[data-theme="dark"] .btn--solid,:root[data-theme="dark"] .toast{color:var(--bg)}
  :root[data-theme="dark"] .type.is-active{background:var(--accent-soft);border-color:var(--accent);color:var(--ink)}
  :root[data-theme="dark"] .type.is-active svg{stroke:var(--accent)}
  :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"] .libfail{background:rgba(240,120,70,.14);color:#f5b08c}
  :root[data-theme="dark"] .warn{background:rgba(240,154,99,.12)}
  :root[data-theme="dark"] .swatch{box-shadow:inset 0 0 0 1px rgba(255,255,255,.16)}
  :root[data-theme="dark"] .ticket{box-shadow:0 24px 60px rgba(0,0,0,.4)}
  /* 비어 있을 때만 체커를 어둡게 (안내 글자가 읽히도록) */
  :root[data-theme="dark"] .qr-box.is-empty{background:repeating-conic-gradient(#232421 0 25%,#1c1d1a 0 50%) 0 0/16px 16px}
}