/* ============================================================
   染替 SOMEKAE — 和風スタイルシート
   配色: 藍(indigo) / 朱(vermilion) / 墨(sumi) / 生成り(kinari) / 金(gold)
   ============================================================ */
:root{
  --ai:#1f3a5f;        /* 藍 */
  --ai-deep:#152840;
  --shu:#c8402c;       /* 朱 */
  --shu-light:#e0603f;
  --sumi:#26221d;      /* 墨 */
  --kinari:#f4ede0;    /* 生成り */
  --kinari-2:#ece2cf;
  --washi:#faf6ec;     /* 和紙 */
  --kin:#c2a34a;       /* 金 */
  --kin-deep:#a7852f;
  --matcha:#7c8a4e;    /* 抹茶 */
  --line:#d9ccb2;
  --shadow:0 10px 30px rgba(38,34,29,.14);
  --shadow-soft:0 4px 14px rgba(38,34,29,.10);
  --radius:14px;
  --serif:"Shippori Mincho","Hiragino Mincho ProN","Yu Mincho",serif;
  --gothic:"Zen Kaku Gothic New","Hiragino Kaku Gothic ProN",sans-serif;
  --brush:"Yuji Syuku","Shippori Mincho",serif;
}

*{margin:0;padding:0;box-sizing:border-box}
/* hidden属性を最優先で有効化（display指定を持つ要素でも確実に隠す） */
[hidden]{display:none!important}
html{scroll-behavior:smooth}
body{
  font-family:var(--gothic);
  color:var(--sumi);
  background:
    radial-gradient(circle at 15% -10%, rgba(194,163,74,.10), transparent 45%),
    radial-gradient(circle at 110% 10%, rgba(200,64,44,.08), transparent 40%),
    #efe7d6;
  min-height:100vh;
  line-height:1.7;
  position:relative;
  overflow-x:hidden;
}
/* 和紙テクスチャ（微細ノイズ） */
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;opacity:.5;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.05'/%3E%3C/svg%3E");
}

/* 背景装飾 */
.bg-decor{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden}
.bg-decor .sun{
  position:absolute;top:-120px;right:-120px;width:360px;height:360px;border-radius:50%;
  background:radial-gradient(circle,rgba(200,64,44,.16),rgba(200,64,44,0) 70%);
}
.bg-decor .seigaiha{
  position:absolute;bottom:0;left:0;right:0;height:180px;opacity:.35;
  background-image:radial-gradient(circle at 20px 40px,transparent 18px,rgba(31,58,95,.18) 19px,rgba(31,58,95,.18) 20px,transparent 21px);
  background-size:40px 40px;
  -webkit-mask-image:linear-gradient(to top,#000,transparent);
          mask-image:linear-gradient(to top,#000,transparent);
}

/* ヘッダー */
.site-header{
  position:relative;z-index:2;
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px;
  padding:22px clamp(18px,4vw,48px);
}
.brand{display:flex;align-items:center;gap:16px}
.brand-mark{
  font-family:var(--brush);
  font-size:30px;line-height:1;color:var(--washi);white-space:nowrap;letter-spacing:3px;
  background:linear-gradient(160deg,var(--shu),var(--shu-light));
  padding:12px 16px 12px 19px;display:inline-flex;align-items:center;justify-content:center;border-radius:14px;
  box-shadow:var(--shadow-soft),inset 0 0 0 2px rgba(255,255,255,.18);
  transform:rotate(-2deg);
}
.brand-text h1{font-family:var(--serif);font-size:26px;letter-spacing:.22em;color:var(--ai-deep);font-weight:800}
.brand-text p{font-size:13px;color:#6f6552;letter-spacing:.08em}
.brand-badges{display:flex;gap:10px;flex-wrap:wrap}
.badge{
  display:inline-flex;align-items:center;gap:7px;
  background:var(--washi);border:1px solid var(--line);
  padding:8px 14px;border-radius:999px;font-size:12.5px;color:var(--ai-deep);
  box-shadow:var(--shadow-soft);font-weight:500;
}

/* レイアウト */
.stage{
  position:relative;z-index:2;
  display:grid;grid-template-columns:minmax(340px,420px) 1fr;
  gap:24px;align-items:start;
  padding:8px clamp(18px,4vw,48px) 40px;
  max-width:1600px;margin:0 auto;
}
.panel{min-width:0}

/* 和紙フレーム（操作卓） */
.washi-frame{
  background:linear-gradient(180deg,var(--washi),var(--kinari));
  border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:24px;
  position:relative;
}
.washi-frame::before{
  content:"";position:absolute;inset:6px;border:1px solid rgba(194,163,74,.35);
  border-radius:10px;pointer-events:none;
}

.ctrl-block{position:relative;padding:18px 0;border-bottom:1px dashed var(--line)}
.ctrl-block:first-child{padding-top:6px}
.ctrl-block:last-child{border-bottom:none;padding-bottom:4px}

.block-title{
  font-family:var(--serif);font-size:16px;color:var(--ai-deep);font-weight:700;
  display:flex;align-items:center;gap:10px;margin-bottom:14px;letter-spacing:.06em;
}
.block-title .kanji{
  font-family:var(--brush);font-size:15px;color:var(--washi);
  background:var(--ai);width:26px;height:26px;border-radius:7px;
  display:grid;place-items:center;flex:none;box-shadow:inset 0 0 0 1px rgba(255,255,255,.15);
}

/* ドロップゾーン */
.dropzone{
  border:2px dashed var(--kin);border-radius:12px;
  background:rgba(255,255,255,.5);
  padding:26px 16px;text-align:center;cursor:pointer;
  transition:.2s;
}
.dropzone:hover,.dropzone:focus-visible{
  background:rgba(255,255,255,.85);border-color:var(--shu);transform:translateY(-1px);outline:none;
}
.dropzone.dragover{background:rgba(200,64,44,.08);border-color:var(--shu);border-style:solid}
.dz-inner .ico-upload{width:34px;height:34px;margin:0 auto 8px;color:var(--kin-deep)}
.dz-main{font-family:var(--serif);font-size:15px;color:var(--ai-deep);font-weight:700}
.dz-sub{font-size:12.5px;color:#8a7f68;margin-top:2px}

/* サムネイル */
.thumbs{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}
.thumb{
  position:relative;width:58px;height:58px;border-radius:8px;overflow:hidden;
  border:2px solid transparent;cursor:pointer;background:
    conic-gradient(#e9e0cf 25%,#f6f0e2 0 50%,#e9e0cf 0 75%,#f6f0e2 0) 0/14px 14px;
  box-shadow:var(--shadow-soft);flex:none;transition:.15s;
}
.thumb img{width:100%;height:100%;object-fit:cover}
.thumb.is-active{border-color:var(--shu);transform:translateY(-2px)}
.thumb .rm{
  position:absolute;top:2px;right:2px;width:18px;height:18px;border-radius:50%;
  background:rgba(38,34,29,.72);color:#fff;border:none;cursor:pointer;
  font-size:11px;line-height:18px;display:grid;place-items:center;
}
.thumb .rm:hover{background:var(--shu)}

/* モードタブ */
.mode-tabs{display:grid;grid-template-columns:1fr 1fr 1fr;gap:8px}
.mode-tab{
  background:var(--washi);border:1.5px solid var(--line);border-radius:10px;
  padding:12px 6px;cursor:pointer;text-align:center;transition:.18s;color:var(--sumi);
}
.mode-tab:hover{border-color:var(--kin);transform:translateY(-1px)}
.mode-tab.is-active{
  background:linear-gradient(165deg,var(--ai),var(--ai-deep));border-color:var(--ai-deep);
  box-shadow:var(--shadow-soft);
}
.mode-tab .mt-name{display:block;font-family:var(--serif);font-weight:700;font-size:13.5px}
.mode-tab .mt-desc{display:block;font-size:10.5px;margin-top:3px;opacity:.7}
.mode-tab.is-active .mt-name,.mode-tab.is-active .mt-desc{color:var(--washi)}
.mode-tab.is-active .mt-desc{opacity:.82}

/* 色行 */
.color-row{display:flex;align-items:center;gap:10px}
input[type="color"]{
  width:52px;height:44px;border:1px solid var(--line);border-radius:10px;
  background:var(--washi);padding:4px;cursor:pointer;flex:none;
}
.hex-input{
  flex:1;min-width:0;font-family:var(--serif);font-size:15px;letter-spacing:.06em;
  padding:11px 14px;border:1px solid var(--line);border-radius:10px;background:var(--washi);
  color:var(--sumi);text-transform:uppercase;
}
.hex-input:focus{outline:none;border-color:var(--shu);box-shadow:0 0 0 3px rgba(200,64,44,.12)}

.stone-btn{
  display:inline-flex;align-items:center;gap:6px;flex:none;
  background:linear-gradient(165deg,#4a4237,var(--sumi));color:var(--kinari);
  border:none;border-radius:10px;padding:11px 14px;cursor:pointer;font-size:13px;font-weight:600;
  transition:.18s;
}
.stone-btn:hover{transform:translateY(-1px);box-shadow:var(--shadow-soft)}
.stone-btn.is-active{background:linear-gradient(165deg,var(--shu-light),var(--shu))}

.hint{font-size:12px;color:var(--shu);margin-top:8px;font-weight:600}

/* 置換モードの色対応表示 */
.replace-map{display:flex;align-items:center;justify-content:center;gap:16px;margin-bottom:14px;
  background:var(--washi);border:1px solid var(--line);border-radius:10px;padding:12px}
.rm-item{display:flex;flex-direction:column;align-items:center;gap:6px}
.rm-item small{font-size:11px;color:#8a7f68}
.rm-chip{width:46px;height:46px;border-radius:10px;border:2px solid rgba(0,0,0,.12);box-shadow:var(--shadow-soft)}
.rm-arrow{font-size:22px;color:var(--kin-deep);font-weight:700}

/* スウォッチ */
.swatch-wrap{margin-top:14px}
.swatch-label{font-size:12px;color:#8a7f68;display:block;margin-bottom:7px}
.swatches{display:flex;gap:8px;flex-wrap:wrap}
.swatch{
  width:30px;height:30px;border-radius:8px;cursor:pointer;background:var(--c);
  border:2px solid rgba(0,0,0,.12);box-shadow:var(--shadow-soft);transition:.15s;
}
.swatch:hover{transform:translateY(-2px) scale(1.06)}

/* スライダー */
.slider-row{margin-bottom:16px}
.slider-head{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:8px}
.slider-head label{font-size:13.5px;font-weight:600;color:var(--ai-deep)}
.slider-head output{
  font-family:var(--serif);font-weight:700;color:var(--shu);font-size:15px;
  background:var(--washi);border:1px solid var(--line);border-radius:7px;padding:1px 10px;min-width:44px;text-align:center;
}
input[type="range"]{
  -webkit-appearance:none;appearance:none;width:100%;height:6px;border-radius:999px;
  background:linear-gradient(90deg,var(--kin),var(--kin-deep));outline:none;cursor:pointer;
}
input[type="range"]::-webkit-slider-thumb{
  -webkit-appearance:none;width:22px;height:22px;border-radius:50%;
  background:radial-gradient(circle at 35% 30%,#fff,var(--shu) 60%,var(--shu) 100%);
  border:2px solid var(--washi);box-shadow:var(--shadow-soft);cursor:pointer;
}
input[type="range"]::-moz-range-thumb{
  width:22px;height:22px;border-radius:50%;border:2px solid var(--washi);
  background:radial-gradient(circle at 35% 30%,#fff,var(--shu) 60%);box-shadow:var(--shadow-soft);cursor:pointer;
}

.hint-sub{font-size:11.5px;color:#8a7f68;margin-top:6px;line-height:1.5}

/* スライダー無効化（ハードエッジON時のぼかし） */
.slider-row.is-disabled{opacity:.45;pointer-events:none}
.slider-row.is-disabled input[type="range"]{background:var(--line)}

/* チェック */
.check-row{display:flex;align-items:center;gap:10px;font-size:13.5px;cursor:pointer;color:var(--ai-deep);margin-top:4px}
.check-row input{width:18px;height:18px;accent-color:var(--shu);cursor:pointer}
/* パキッと切り抜きトグルは目立たせる */
.toggle-hard{
  background:linear-gradient(165deg,rgba(200,64,44,.08),rgba(194,163,74,.08));
  border:1.5px solid var(--kin);border-radius:10px;padding:12px 14px;margin:6px 0 16px;
}
.toggle-hard b{color:var(--shu)}

/* ボタン群 */
.actions{display:flex;flex-direction:column;gap:12px}
.urushi-btn{
  width:100%;padding:16px;border:none;border-radius:12px;cursor:pointer;
  font-family:var(--serif);font-size:16px;font-weight:700;letter-spacing:.08em;color:var(--washi);
  background:linear-gradient(160deg,var(--shu-light),var(--shu) 55%,#a8321f);
  box-shadow:0 8px 20px rgba(200,64,44,.32),inset 0 1px 0 rgba(255,255,255,.25);
  display:flex;align-items:center;justify-content:center;gap:10px;transition:.18s;
}
.urushi-btn:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(200,64,44,.42)}
.urushi-btn:active{transform:translateY(0)}
/* ワンタッチ */
.onetouch-btn{
  width:100%;padding:17px;border:none;border-radius:12px;cursor:pointer;
  font-family:var(--serif);font-size:16.5px;font-weight:800;letter-spacing:.06em;color:var(--sumi);
  background:linear-gradient(160deg,#f0d98a,var(--kin) 55%,var(--kin-deep));
  box-shadow:0 8px 22px rgba(194,163,74,.38),inset 0 1px 0 rgba(255,255,255,.4);
  display:flex;align-items:center;justify-content:center;gap:10px;transition:.18s;
  border:1px solid var(--kin-deep);
}
.onetouch-btn:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(194,163,74,.5)}
.onetouch-btn:active{transform:translateY(0)}
.onetouch-note{font-size:11.5px;color:#6f6552;line-height:1.6;margin:-4px 2px 4px;text-align:center}
.dl-row{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.gold-btn{
  padding:13px;border-radius:10px;cursor:pointer;font-weight:700;font-size:13.5px;
  color:var(--sumi);background:linear-gradient(160deg,#e6cd7f,var(--kin) 60%,var(--kin-deep));
  border:1px solid var(--kin-deep);box-shadow:var(--shadow-soft);transition:.18s;
}
.gold-btn.ghost{background:var(--washi);color:var(--kin-deep);border:1.5px solid var(--kin)}
.gold-btn:hover:not(:disabled){transform:translateY(-1px);box-shadow:var(--shadow)}
.gold-btn:disabled{opacity:.45;cursor:not-allowed}
.save-note{font-size:11.5px;color:#6f6552;line-height:1.6;background:rgba(194,163,74,.10);border:1px solid var(--line);border-radius:8px;padding:10px 12px}
.save-note b{color:var(--shu)}
.text-btn{background:none;border:none;color:#8a7f68;font-size:13px;cursor:pointer;text-decoration:underline;text-underline-offset:3px}
.text-btn:hover{color:var(--shu)}

/* ====== ビューア ====== */
.viewer{
  background:linear-gradient(180deg,var(--washi),var(--kinari));
  border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);
  overflow:hidden;display:flex;flex-direction:column;min-height:600px;
}
.viewer-toolbar{
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;
  padding:14px 18px;border-bottom:1px solid var(--line);background:rgba(255,255,255,.35);
}
.seg{display:inline-flex;background:var(--kinari-2);border-radius:10px;padding:4px;border:1px solid var(--line)}
.seg-btn{
  border:none;background:none;padding:8px 16px;border-radius:8px;cursor:pointer;
  font-size:13.5px;font-weight:600;color:#6f6552;font-family:var(--serif);transition:.15s;
}
.seg-btn.is-active{background:var(--ai);color:var(--washi);box-shadow:var(--shadow-soft)}
.bg-toggle{display:flex;align-items:center;gap:6px;font-size:12.5px;color:#6f6552}
.chip{
  border:1px solid var(--line);background:var(--washi);border-radius:999px;
  padding:5px 12px;cursor:pointer;font-size:12px;color:var(--sumi);transition:.15s;
}
.chip.is-active{background:var(--sumi);color:var(--kinari);border-color:var(--sumi)}

.canvas-stage{
  flex:1;min-height:0;position:relative;display:grid;place-items:center;overflow:hidden;padding:14px;
  background:transparent;   /* 画像まわりは見台の和紙色。市松は画像の背後だけに出す */
}
.bg-checker{background:
  conic-gradient(#dcd2bf 25%,#efe7d6 0 50%,#dcd2bf 0 75%,#efe7d6 0) 0/24px 24px;}
.bg-light{background:#ffffff}
.bg-dark{background:#1c1a17}

.empty-state{text-align:center;color:#9a8f78}
.empty-art{
  font-family:var(--brush);font-size:96px;color:var(--line);
  border:3px double var(--line);width:150px;height:150px;border-radius:50%;
  display:grid;place-items:center;margin:0 auto 18px;
}
.empty-state p{font-size:14px;line-height:1.9}

.canvas-wrap{position:relative;line-height:0;box-shadow:var(--shadow);max-width:100%;max-height:100%}
.canvas-wrap .layer{display:block;width:100%;height:100%}
.canvas-wrap #beforeCanvas{position:absolute;inset:0;z-index:1}
.canvas-wrap #afterCanvas{position:relative;z-index:2}
.canvas-wrap.picking{cursor:crosshair}

/* 見比べ：元画像は左半分だけ／加工後は右半分だけを表示。
   両者を重ねず分割することで、透明化・抽出でも右側は下地(市松)が見え差が出る。 */
.canvas-wrap.compare{cursor:ew-resize;touch-action:none}
.canvas-wrap.compare.dragging{user-select:none}
.canvas-wrap.compare #beforeCanvas{clip-path:inset(0 calc(100% - var(--split,50%)) 0 0)}
.canvas-wrap.compare #afterCanvas{clip-path:inset(0 0 0 var(--split,50%))}
.compare-handle{
  position:absolute;top:0;bottom:0;left:var(--split,50%);z-index:5;
  transform:translateX(-50%);cursor:ew-resize;width:40px;display:grid;place-items:center;
}
.compare-handle .ch-line{position:absolute;top:0;bottom:0;width:3px;background:var(--washi);box-shadow:0 0 0 1px rgba(0,0,0,.25)}
.compare-handle .ch-grip{
  position:relative;background:var(--ai);color:var(--washi);border-radius:999px;
  padding:6px 8px;font-size:12px;box-shadow:var(--shadow-soft);letter-spacing:-1px;
}

/* ルーペ（スポイト時） */
.loupe{
  position:absolute;width:96px;height:96px;border-radius:50%;pointer-events:none;z-index:20;
  border:3px solid var(--washi);box-shadow:var(--shadow),0 0 0 1px rgba(0,0,0,.2);
  image-rendering:pixelated;background-repeat:no-repeat;
}
.loupe::after{content:"";position:absolute;inset:0;border-radius:50%;
  box-shadow:inset 0 0 0 1px rgba(0,0,0,.3);
  background:linear-gradient(rgba(200,64,44,.9),rgba(200,64,44,.9)) center/12px 2px no-repeat,
             linear-gradient(rgba(200,64,44,.9),rgba(200,64,44,.9)) center/2px 12px no-repeat;}

.viewer-foot{
  display:flex;justify-content:space-between;align-items:center;gap:12px;
  padding:12px 18px;border-top:1px solid var(--line);background:rgba(255,255,255,.35);
  font-size:12.5px;color:#6f6552;
}
.status{font-weight:600;color:var(--ai-deep)}
.status.busy{color:var(--shu)}
.status.done{color:var(--matcha)}

/* フッター */
.site-footer{position:relative;z-index:2;text-align:center;padding:20px;font-size:12px;color:#8a7f68}

/* アイコン（インラインSVGマスク） */
.ico{display:inline-block;width:16px;height:16px;background:currentColor;vertical-align:-2px;
  -webkit-mask-size:contain;mask-size:contain;-webkit-mask-repeat:no-repeat;mask-repeat:no-repeat;-webkit-mask-position:center;mask-position:center}
.ico-shield{-webkit-mask-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='black' d='M12 2l8 3v6c0 5-3.4 8.5-8 11-4.6-2.5-8-6-8-11V5l8-3z'/%3E%3C/svg%3E");mask-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='black' d='M12 2l8 3v6c0 5-3.4 8.5-8 11-4.6-2.5-8-6-8-11V5l8-3z'/%3E%3C/svg%3E")}
.ico-bolt{-webkit-mask-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='black' d='M13 2L4 14h6l-1 8 9-12h-6l1-8z'/%3E%3C/svg%3E");mask-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='black' d='M13 2L4 14h6l-1 8 9-12h-6l1-8z'/%3E%3C/svg%3E")}
.ico-upload{-webkit-mask-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='black' d='M12 3l5 5h-3v6h-4V8H7l5-5zM5 18h14v2H5z'/%3E%3C/svg%3E");mask-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='black' d='M12 3l5 5h-3v6h-4V8H7l5-5zM5 18h14v2H5z'/%3E%3C/svg%3E")}
.ico-picker{-webkit-mask-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='black' d='M20.7 5.6l-2.3-2.3c-.8-.8-2-.8-2.8 0l-2.9 2.9-1.3-1.3-1.4 1.4 1.3 1.3L3 15.6V21h5.4l6-6 1.3 1.3 1.4-1.4-1.3-1.3 2.9-2.9c.8-.8.8-2 0-2.8zM7.6 19H5v-2.6l6.6-6.6 2.6 2.6L7.6 19z'/%3E%3C/svg%3E");mask-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='black' d='M20.7 5.6l-2.3-2.3c-.8-.8-2-.8-2.8 0l-2.9 2.9-1.3-1.3-1.4 1.4 1.3 1.3L3 15.6V21h5.4l6-6 1.3 1.3 1.4-1.4-1.3-1.3 2.9-2.9c.8-.8.8-2 0-2.8z'/%3E%3C/svg%3E")}
.ico-magic{-webkit-mask-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='black' d='M7.5 5.6L5 4l1.6 2.5L5 9l2.5-1.6L10 9 8.4 6.5 10 4 7.5 5.6zM19 13l-1.5-2.4L16 13l-2.5 1.6L16 16l1.5 2.4L19 16l2.5-1.6L19 13zM4 14l6-6 2 2-6 6-2-2z'/%3E%3C/svg%3E");mask-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='black' d='M7.5 5.6L5 4l1.6 2.5L5 9l2.5-1.6L10 9 8.4 6.5 10 4 7.5 5.6zM4 14l6-6 2 2-6 6-2-2z'/%3E%3C/svg%3E")}

/* トースト */
.toast{
  position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(20px);
  background:var(--sumi);color:var(--kinari);padding:12px 22px;border-radius:999px;
  font-size:13.5px;z-index:100;opacity:0;transition:.3s;box-shadow:var(--shadow);pointer-events:none;
  border:1px solid rgba(255,255,255,.12);
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* デスクトップ：全高固定。設定パネルだけスクロールし、画像プレビューは固定・常に収める */
@media (min-width:961px){
  html,body{height:100%}
  body{overflow:hidden;display:flex;flex-direction:column}
  .site-header{flex:none}
  .stage{flex:1;min-height:0;align-items:stretch;padding-bottom:14px}
  .controls{max-height:100%;overflow-y:auto;overflow-x:hidden;padding-right:6px}
  .viewer{max-height:100%;min-height:0}
  .site-footer{flex:none;padding:10px 20px}
  /* 設定パネルのスクロールバーを和風に控えめに */
  .controls::-webkit-scrollbar{width:10px}
  .controls::-webkit-scrollbar-thumb{background:var(--line);border-radius:999px;border:2px solid transparent;background-clip:content-box}
  .controls::-webkit-scrollbar-thumb:hover{background:var(--kin)}
}

/* レスポンシブ */
@media (max-width:960px){
  .stage{grid-template-columns:1fr}
  .viewer{min-height:70vh;order:-1}
}
@media (max-width:480px){
  .mode-tabs{grid-template-columns:1fr}
  .dl-row{grid-template-columns:1fr}
  .brand-mark{font-size:25px;padding:10px 13px 10px 15px}
  .brand-text h1{font-size:22px}
}

/* --- CSP対応ユーティリティ（インラインstyle撤廃のため。'unsafe-inline' 不使用） --- */
.mt-4{margin-top:4px}
.mt-10{margin-top:10px}
.mt-16{margin-top:16px}
.flex-1{flex:1}
.hint-note{color:#6f6552;font-weight:400;margin:-6px 0 12px}