:root{
  --bg:#f7f6f3; --panel:#fff; --line:#e3e0da; --text:#2b2a27; --sub:#6b675f;
  --accent:#b14730; --radius:10px;
}
*{box-sizing:border-box}
body{
  margin:0; background:var(--bg); color:var(--text);
  font-family:"Hiragino Sans","Noto Sans JP",system-ui,sans-serif;
  font-size:16px; line-height:1.6;
}
header{padding:20px clamp(16px,4vw,32px); border-bottom:1px solid var(--line); background:var(--panel); position:relative}
.lang-switch{
  position:absolute; top:20px; right:clamp(16px,4vw,32px);
  font-size:16px; color:var(--sub); text-decoration:none;
  border:1px solid var(--line); border-radius:999px; padding:4px 14px; background:#fff;
}
.lang-switch:hover{color:var(--accent); border-color:var(--accent)}
header h1{margin:0; font-size:clamp(20px,2.4vw,26px); letter-spacing:-0.02em}
header p{margin:4px 0 0; font-size:16px; color:var(--sub)}

.wrap{
  display:grid; grid-template-columns:minmax(360px,400px) 1fr; gap:24px;
  padding:24px clamp(16px,4vw,32px); align-items:start;
}
@media (max-width:900px){ .wrap{grid-template-columns:1fr} }

.panel{background:var(--panel); border:1px solid var(--line); border-radius:var(--radius); padding:20px}
.panel h2{margin:0 0 14px; font-size:17px; letter-spacing:-0.01em}
.panel h3{
  margin:22px 0 12px; font-size:16px; color:var(--sub); font-weight:600;
  border-top:1px solid var(--line); padding-top:16px; letter-spacing:-0.01em;
}
.panel h3:first-of-type{border-top:none; padding-top:0; margin-top:0}

.field{margin-bottom:16px}
.field label{
  display:flex; justify-content:space-between; gap:8px;
  font-size:16px; margin-bottom:6px; color:var(--sub);
}
.field label.check{justify-content:flex-start; align-items:center; gap:10px; cursor:pointer; color:var(--text)}
.field label.check input{width:18px; height:18px; accent-color:var(--accent); margin:0}
.field .val{color:var(--text); font-variant-numeric:tabular-nums; white-space:nowrap}
textarea,select,input[type="number"]{
  width:100%; font-size:16px; font-family:inherit; padding:10px 12px;
  border:1px solid var(--line); border-radius:8px; background:#fff; color:var(--text);
}
textarea{resize:vertical; min-height:110px; line-height:1.7}
input[type="range"]{width:100%; accent-color:var(--accent)}
input[type="color"]{width:100%; height:40px; padding:2px; border:1px solid var(--line); border-radius:8px; background:#fff}
.row{display:grid; grid-template-columns:1fr 1fr; gap:12px}

.accordion{border-top:1px solid var(--line); margin-top:22px; padding-top:16px}
.accordion summary{
  cursor:pointer; font-size:16px; font-weight:600; color:var(--sub);
  list-style:none; display:flex; align-items:center; gap:8px; letter-spacing:-0.01em;
}
.accordion summary::-webkit-details-marker{display:none}
.accordion summary::before{content:"＋"; color:var(--accent); font-weight:700}
.accordion[open] summary::before{content:"−"}
.accordion summary:hover{color:var(--text)}
.accordion-body{margin-top:14px}
.chips{display:flex; flex-wrap:wrap; gap:8px}
.chip{
  font-size:16px; font-family:inherit; padding:6px 12px; border:1px solid var(--line);
  border-radius:999px; background:#fff; cursor:pointer; color:var(--sub);
}
.chip[aria-pressed="true"]{background:var(--accent); border-color:var(--accent); color:#fff}

.stage{
  background:var(--panel); border:1px solid var(--line); border-radius:var(--radius);
  padding:20px; min-height:320px; display:flex; flex-direction:column; gap:16px;
  position:sticky; top:24px;
}
.status{font-size:16px; color:var(--sub); min-height:1.6em}
.canvas-box{
  overflow:auto; border-radius:8px; padding:12px; display:flex; justify-content:center;
  background:
    linear-gradient(45deg,#eceae5 25%,transparent 25%,transparent 75%,#eceae5 75%),
    linear-gradient(45deg,#eceae5 25%,transparent 25%,transparent 75%,#eceae5 75%);
  background-size:16px 16px; background-position:0 0,8px 8px;
}
canvas{max-width:100%; height:auto; box-shadow:0 2px 12px rgba(0,0,0,.08)}

.actions{display:flex; flex-wrap:wrap; gap:10px; align-items:center}
button.dl{
  font-size:16px; font-family:inherit; padding:10px 18px; border-radius:8px; cursor:pointer;
  border:1px solid var(--accent); background:var(--accent); color:#fff;
}
button.dl.ghost{background:#fff; color:var(--accent)}
button.dl:disabled{opacity:.5; cursor:not-allowed}
#scale{width:auto}
.note{font-size:16px; color:var(--sub); border-top:1px dashed var(--line); padding-top:12px; margin:4px 0 0}
.note.warn{color:var(--accent); border-top:none; padding-top:0}

/* ── 広告（ツール規格: PC/SPとも320×100・PCは右下フローティング） ───────── */
.footer-ad {
  position: fixed; right: 0; bottom: 0; z-index: 90;
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  padding: 0;
  width: 320px; overflow: hidden; /* AdSenseレスポンシブの横伸び防止＋×を右端に固定 */
  background: transparent; border: none; box-shadow: none;
}
.footer-ad.is-closed { display: none; }
.ad-widget__head { display: flex; align-items: center; justify-content: space-between; width: 100%; position: relative; z-index: 1; }
.ad-widget__label { color: #64748b; font-size: 12px; letter-spacing: 0.04em; background: #f1f5f9; padding: 2px 8px; border-radius: 999px; }
.ad-widget__close {
  appearance: none; border: none; background: #f1f5f9; color: #64748b;
  width: 18px; height: 18px; border-radius: 50%; font-size: 12px; line-height: 1;
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  transition: background 0.2s, color 0.2s;
}
.ad-widget__close:hover { background: #e2e8f0; color: #1e293b; }
.footer-ad ins.adsbygoogle { display: block; width: 320px; height: 100px; }

@media screen and (max-width: 768px) {
  .footer-ad {
    position: static; align-self: center; margin: 24px auto 0;
    gap: 0; padding: 0; background: none; border: none; border-radius: 0; box-shadow: none; z-index: auto;
  }
  .footer-ad.is-closed { display: flex; } /* PCで閉じてもSPでは表示 */
  .ad-widget__head { display: none; }     /* SPはラベル・×を隠す */
  .footer-ad ins.adsbygoogle { width: 320px; height: 100px; }
}

/* ── フッター（規格: 左寄せ＋wrap） ─────────────────────────────────── */
footer{
  display:flex; justify-content:flex-start; flex-wrap:wrap; gap:12px 24px; align-items:center;
  padding:24px clamp(16px,4vw,32px); color:var(--sub); font-size:16px;
  border-top:1px solid var(--line); background:var(--panel);
}
footer a{color:var(--text); text-decoration:none; transition:color .2s}
footer a:hover{color:var(--accent)}
.footer-links{display:flex; flex-wrap:wrap; gap:16px}
.footer-links a{border:1px solid var(--line); padding:8px 16px; border-radius:6px; font-size:16px}
.footer-links a:hover{border-color:var(--accent)}