:root{
  /* Bold Editorial — 다크 우선. 검정+코랄 시그니처+라임 성공색 */
  --bg:#0d0d0f; --card:#161619; --card-2:#1e1e23; --line:#2c2c33;
  --text:#f5f4ef; --muted:#9a978c; --brand:#ff6a2b; --brand-2:#e2551a;
  --ok:#b6f24a; --danger:#ff6b6b; --on-brand:#0d0d0f; --on-ok:#0d0d0f;
  --radius:10px; --radius-sm:7px; --pad:16px;
  --mono:ui-monospace,"SF Mono",SFMono-Regular,Menlo,"Cascadia Mono","Roboto Mono",monospace;
}
@media (prefers-color-scheme: light){
  :root{
    --bg:#f4f2ec; --card:#ffffff; --card-2:#f0ede4; --line:#ddd7c9;
    --text:#16150f; --muted:#6b665a; --brand:#e2551a; --brand-2:#c2440f;
    --ok:#4f9e1e; --danger:#c0392b; --on-brand:#ffffff; --on-ok:#ffffff;
  }
}
*{box-sizing:border-box}
[hidden]{display:none !important}
html,body{margin:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"SF Pro","Segoe UI",Roboto,"Apple SD Gothic Neo","Noto Sans KR",sans-serif;
  background:var(--bg); color:var(--text);
  -webkit-text-size-adjust:100%;
  padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}
.app{max-width:820px; margin:0 auto; padding:18px 16px 40px}

/* Header — 굵고 타이트한 에디토리얼 헤더 + 액센트 룰 바 */
.topbar{padding:10px 2px 4px}
.topbar h1{
  margin:0; font-size:34px; font-weight:900; letter-spacing:-.035em; line-height:1.02;
  display:inline-block; padding-bottom:8px;
  border-bottom:4px solid var(--brand);
}
.sub{margin:12px 0 0; color:var(--muted); font-size:13.5px; line-height:1.5}

.card{
  background:var(--card); border:1px solid var(--line); border-radius:var(--radius);
  padding:var(--pad); margin-top:14px;
}

/* Dropzone */
.dropzone{display:block; cursor:pointer; border:2px dashed var(--line);
  border-radius:var(--radius); padding:34px 16px; text-align:center; transition:.15s;
  background:var(--card-2);}
.dropzone.drag{border-color:var(--brand); background:rgba(255,106,43,.10);
  background:color-mix(in srgb,var(--brand) 10%,transparent)}
.drop-icon{font-size:34px; line-height:1; color:var(--brand); font-weight:800}
.drop-title{margin-top:10px; font-size:17px; font-weight:800; letter-spacing:-.01em}
.drop-hint{margin-top:8px; color:var(--muted); font-size:11.5px;
  font-family:var(--mono); letter-spacing:.02em}

/* Segmented control */
.seg{display:flex; flex-wrap:wrap; gap:6px; background:var(--card-2); border:1px solid var(--line);
  padding:5px; border-radius:var(--radius)}
.seg-btn{flex:1 1 120px; appearance:none; border:0; background:transparent; color:var(--muted);
  font-family:var(--mono); font-size:12px; font-weight:700; letter-spacing:.04em; text-transform:uppercase;
  padding:11px 8px; border-radius:var(--radius-sm); cursor:pointer; white-space:nowrap; transition:.12s}
.seg-btn:hover{color:var(--text)}
.seg-btn.is-active{background:var(--brand); color:var(--on-brand)}
.mode-hint{margin:12px 2px 0; color:var(--muted); font-size:13px; line-height:1.5}

.opts{margin-top:14px}
.row{display:flex; align-items:center; gap:12px; margin:12px 0}
.row label{flex:0 0 42%; font-size:14px; color:var(--muted)}
.row label b{color:var(--brand); font-family:var(--mono); font-weight:700; font-variant-numeric:tabular-nums}
.row input[type=range]{flex:1; accent-color:var(--brand); height:26px}
.row select{flex:1; padding:9px 10px; border-radius:var(--radius-sm); border:1px solid var(--line);
  background:var(--card-2); color:var(--text); font-size:14px}
.check{display:flex; align-items:center; gap:8px; font-size:14px; color:var(--muted); margin-top:8px}
.check input{width:18px; height:18px; accent-color:var(--brand)}

/* Buttons */
.btn{appearance:none; border:1px solid var(--line); background:var(--card-2);
  color:var(--text); font-size:15px; font-weight:800; letter-spacing:-.01em; padding:12px 16px;
  border-radius:var(--radius-sm); cursor:pointer; -webkit-tap-highlight-color:transparent; transition:.12s}
.btn:hover{border-color:var(--muted)}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--brand); border-color:var(--brand); color:var(--on-brand)}
.btn-primary:hover{background:var(--brand-2); border-color:var(--brand-2)}
.btn-block{display:block; width:100%; margin-top:16px; padding:14px;
  text-transform:uppercase; letter-spacing:.03em; font-family:var(--mono); font-size:14px}

/* Result */
.tabs{display:flex; gap:8px; margin-bottom:12px}
.tab{appearance:none; border:0; background:transparent; color:var(--muted);
  font-family:var(--mono); font-size:12px; font-weight:700; letter-spacing:.03em; text-transform:uppercase;
  padding:7px 11px; border-radius:var(--radius-sm); cursor:pointer}
.tab.is-active{background:var(--brand); color:var(--on-brand)}
.stage{border:1px solid var(--line); border-radius:var(--radius); overflow:auto; min-height:220px;
  display:flex; align-items:center; justify-content:center; padding:10px}
.checker{
  background-image:
    linear-gradient(45deg,#80808022 25%,transparent 25%),
    linear-gradient(-45deg,#80808022 25%,transparent 25%),
    linear-gradient(45deg,transparent 75%,#80808022 75%),
    linear-gradient(-45deg,transparent 75%,#80808022 75%);
  background-size:20px 20px; background-position:0 0,0 10px,10px -10px,-10px 0;
}
.view{width:100%}
.view svg{width:100%; height:auto; display:block; margin:0 auto}
.view img{max-width:100%; height:auto; display:block; margin:0 auto}
.meta{color:var(--muted); font-size:12px; margin:12px 2px 4px;
  font-family:var(--mono); letter-spacing:.01em; font-variant-numeric:tabular-nums}
.actions{display:flex; gap:10px; flex-wrap:wrap; margin-top:8px}
.actions .btn{flex:1; min-width:120px}

/* Batch */
.batch-list{display:flex; flex-direction:column; gap:6px; margin:8px 0 14px; max-height:320px; overflow-y:auto}
.batch-row{display:flex; align-items:center; gap:10px; padding:8px 10px; background:var(--card-2);
  border:1px solid var(--line); border-radius:var(--radius-sm); cursor:pointer}
.batch-row:active{transform:translateY(1px)}
.thumb{flex:0 0 auto; width:52px; height:52px; border-radius:var(--radius-sm); overflow:hidden;
  display:flex; align-items:center; justify-content:center; border:1px solid var(--line); background-size:12px 12px}
.thumb svg{width:100%; height:100%}
.thumb img{max-width:100%; max-height:100%}
.bmeta{flex:1; min-width:0; display:flex; flex-direction:column; gap:2px}
.batch-row .bn{font-size:13px; overflow:hidden; text-overflow:ellipsis; white-space:nowrap}
.batch-row .bi{font-size:11px; color:var(--muted); font-family:var(--mono); font-variant-numeric:tabular-nums}
.btn-sm{padding:6px 12px; font-size:13px; flex:0 0 auto}

.foot{display:flex; justify-content:space-between; align-items:center;
  margin-top:18px; padding:0 4px; color:var(--muted);
  font-family:var(--mono); font-size:11px; letter-spacing:.02em}
.status{color:var(--ok)}

/* Spinner */
.spinner{position:fixed; inset:0; display:flex; flex-direction:column; gap:14px;
  align-items:center; justify-content:center; background:rgba(13,13,15,.72);
  background:color-mix(in srgb,var(--bg) 78%,transparent);
  backdrop-filter:blur(4px); color:var(--text); font-weight:800;
  font-family:var(--mono); text-transform:uppercase; letter-spacing:.05em; font-size:13px; z-index:50}
.ring{width:46px; height:46px; border-radius:50%; border:4px solid var(--line);
  border-top-color:var(--brand); animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

@media (max-width:520px){ .row label{flex-basis:48%} .topbar h1{font-size:29px} }