/* 9in1プロンプト集と同じ白黒トークン。色は増やさない */
:root{--ink:#171717;--muted:#626262;--line:#dedede;--surface:#f4f4f4;--page:1240px}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:#fff;color:var(--ink);font:16px/1.7 -apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Yu Gothic",sans-serif}
button,input{font:inherit;color:inherit}
button{cursor:pointer;touch-action:manipulation;-webkit-tap-highlight-color:transparent}
button:focus-visible,a:focus-visible,input:focus-visible,.drop:focus-visible{outline:3px solid #3678cc;outline-offset:3px}
button:disabled{cursor:wait;opacity:.6}
img{display:block;max-width:100%}
[hidden]{display:none!important}
.wrap{max-width:var(--page);margin:auto;padding-inline:32px}
.sp{display:none}

/* ヘッダー */
header{padding-top:28px}
.masthead{display:flex;justify-content:space-between;align-items:center;gap:20px}
.wordmark{font-size:14px;font-weight:800;letter-spacing:.16em}
.edition{font-size:14px;color:var(--muted);letter-spacing:.08em}
h1{font-family:Arial,Helvetica,sans-serif;font-size:clamp(32px,5vw,70px);line-height:1.1;letter-spacing:-.055em;margin:24px 0 8px;font-weight:900}
.intro{margin:0 0 28px;color:var(--muted)}

/* ボタン共通 */
.action{min-height:48px;border:1px solid var(--line);border-radius:5px;background:#fff;padding:10px 20px;font-weight:700;font-size:15px}
.action:hover{background:var(--surface)}
.primary{background:var(--ink);border-color:var(--ink);color:#fff}
.primary:hover{background:#000}
.wide{width:100%}

/* 画像を入れる場所 */
.drop{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;min-height:340px;padding:40px 20px;margin-bottom:64px;border:2px dashed var(--line);border-radius:9px;background:var(--surface);text-align:center;cursor:pointer;transition:border-color .15s,background .15s}
.drop:hover,.drop.is-over{border-color:var(--ink);background:#ebebeb}
.drop-icon{width:52px;height:52px;color:var(--ink);margin-bottom:6px}
.drop-title{margin:0;font-size:20px;font-weight:800}
.drop-sub{margin:0 0 14px;font-size:13px;color:var(--muted)}

/* 編集画面 */
.editor{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:32px;padding-bottom:64px;align-items:start}
.preview{background:var(--surface);border-radius:9px;padding:20px;max-height:78dvh;overflow:auto;display:flex;justify-content:center}
.preview-frame{position:relative;width:fit-content;max-width:100%}
.preview-frame img{max-height:none;width:auto;max-width:min(100%,420px)}
.lines{position:absolute;inset:0;pointer-events:none}
.preview-frame.is-cols img{max-width:100%}
.cut{position:absolute;filter:drop-shadow(0 0 1px #fff) drop-shadow(0 0 1px #fff)}
.is-rows .cut{left:-8px;right:-8px;border-top:2px dashed var(--ink)}
.is-cols .cut{top:-8px;bottom:-8px;border-left:2px dashed var(--ink)}
.cut-no{position:absolute;padding:1px 7px;border-radius:3px;background:var(--ink);color:#fff;font:700 11px/1.6 Arial,Helvetica,sans-serif;letter-spacing:.04em}

.panel{position:sticky;top:20px;border:1px solid var(--line);border-radius:9px;padding:24px}
.info{margin:0 0 20px;padding-bottom:16px;border-bottom:1px solid var(--line);font-size:13px;color:var(--muted);overflow-wrap:anywhere}
.info strong{display:block;color:var(--ink);font-size:15px}
.field{margin-bottom:22px}
.label{display:block;font-size:14px;font-weight:800;margin-bottom:8px}
.note{margin:8px 0 0;font-size:13px;color:var(--muted)}

.stepper{display:grid;grid-template-columns:56px 1fr 56px;border:1px solid var(--line);border-radius:5px;overflow:hidden}
.step{border:0;background:var(--surface);font-size:22px;min-height:56px}
.step:hover{background:#e6e6e6}
.stepper input{width:100%;border:0;text-align:center;font:900 32px/1 Arial,Helvetica,sans-serif;font-variant-numeric:tabular-nums;-moz-appearance:textfield;appearance:textfield}
.stepper input::-webkit-inner-spin-button,.stepper input::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}

.presets{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.presets button,.seg button{min-height:40px;padding:6px 14px;border:1px solid var(--line);border-radius:4px;background:#fff;font-size:14px;font-weight:700}
.presets button:hover,.seg button:hover{background:var(--surface)}
.presets button[aria-pressed=true],.seg button[aria-pressed=true]{background:var(--ink);border-color:var(--ink);color:#fff}
.seg{display:grid;grid-template-columns:repeat(3,1fr);gap:6px}
.seg-2{grid-template-columns:repeat(2,1fr)}
.seg-2 button{display:flex;align-items:center;justify-content:center;gap:8px;min-height:48px}
.seg-2 svg{width:28px;height:18px;flex:none}

.text{width:100%;min-height:48px;border:1px solid var(--line);border-radius:5px;padding:0 14px;background:var(--surface)}
.buttons{display:grid;gap:8px}
.status{min-height:24px;margin:12px 0 0;font-size:14px;font-weight:700}

/* 切り分けた画像の一覧 */
.pieces-head{grid-column:1/-1;display:flex;align-items:baseline;justify-content:space-between;gap:16px;border-top:1px solid var(--line);padding-top:32px}
.pieces-head h2{margin:0;font-size:22px;font-weight:900;letter-spacing:-.02em}
.pieces{grid-column:1/-1;list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:24px 16px}
.piece button{display:block;width:100%;padding:0;border:0;background:none;text-align:left}
.piece-thumb{aspect-ratio:3/4;background:var(--surface);border:1px solid #ededed;border-radius:6px;padding:10px;display:flex;align-items:center;justify-content:center;transition:background .2s}
.piece-thumb img{max-height:100%;object-fit:contain;transition:transform .2s}
.piece button:hover .piece-thumb{background:#ebebeb}
.piece button:hover img{transform:scale(1.03)}
.piece-meta{display:flex;justify-content:space-between;gap:8px;margin-top:10px;font-size:13px}
.piece-meta b{font-family:Arial,Helvetica,sans-serif;font-variant-numeric:tabular-nums;letter-spacing:.06em}
.piece-meta span{color:var(--muted)}

/* フッターSNS（9in1プロンプト集と同じ） */
footer{border-top:1px solid var(--line);padding:16px 0 32px}
.foot-social{display:flex;justify-content:center}
.social-icons{display:flex;align-items:center;justify-content:center;gap:8px;flex-wrap:wrap}
.social-icon{display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;width:56px;min-height:56px;padding:6px 4px 8px;color:var(--muted);border-radius:6px;text-decoration:none}
.social-icon svg{width:26px;height:26px}
.social-label{font-size:10px;line-height:1.2;font-weight:600;white-space:nowrap}
.social-icon:hover{color:var(--ink);background:var(--surface)}

@media(max-width:900px){
  .editor{grid-template-columns:1fr}
  .panel{position:static}
  .preview{max-height:60dvh}
}
@media(max-width:540px){
  .wrap{padding-inline:16px}
  .sp{display:inline}
  header{padding-top:20px}
  .wordmark,.edition{font-size:12px}
  h1{font-size:clamp(30px,9vw,44px);margin-top:22px}
  .intro{font-size:14px;margin-bottom:20px}
  .drop{min-height:280px;margin-bottom:48px}
  .preview{padding:12px}
  .panel{padding:18px}
  .pieces{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 12px}
  .pieces-head h2{font-size:19px}
}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}