:root{
  --paper:#faf6ef;
  --surface:#ffffff;
  --surface-2:#f4eee2;
  --ink:#2b2620;
  --ink-soft:#7c7468;
  --line:#e9e1d3;
  --terra:#df6240;
  --terra-soft:#fbeee8;
  --sage:#3f9e8c;
  --sage-soft:#e7f2ee;
  --amber:#c9923f;
  --violet:#8b6fb0;
  --radius:16px;
  --radius-sm:11px;
  --mincho:"Shippori Mincho",serif;
  --gothic:"Zen Kaku Gothic New",system-ui,sans-serif;
  --mono:"Space Mono",monospace;
  --shadow:0 18px 44px -26px rgba(70,50,30,.4);
  --shadow-sm:0 6px 18px -12px rgba(70,50,30,.5);
}

*{box-sizing:border-box;}
html,body{height:100%;margin:0;}
body{
  font-family:var(--gothic);
  background:var(--paper);
  color:var(--ink);
  font-weight:500;
  -webkit-font-smoothing:antialiased;
  overflow:hidden;
}
button{font-family:inherit;cursor:pointer;}

.app{display:flex;flex-direction:column;height:100vh;height:100dvh;}

/* ===== ヘッダー ===== */
.topbar{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  height:64px;padding:0 clamp(12px,2.5vw,20px);background:var(--surface);
  border-bottom:1px solid var(--line);z-index:5;flex:none;
}
/* ロゴのみの軽量ヘッダー(スタート/保存画面) */
.topbar-min{justify-content:flex-start;}
/* ロゴ(全画面 LP へのリンク)。クリック領域とホバー/フォーカス演出を共通化 */
.brand{display:flex;align-items:center;gap:11px;min-width:0;cursor:pointer;color:inherit;text-decoration:none;border-radius:12px;padding:4px 8px;margin:-4px -8px;transition:background .15s ease,opacity .15s ease;}
.brand:hover{background:color-mix(in srgb,var(--terra) 9%,transparent);opacity:.92;}
.brand:focus-visible{outline:2px solid var(--terra);outline-offset:2px;}
.brand-mark{display:flex;flex:none;width:34px;height:34px;}
.brand-mark img{width:100%;height:100%;display:block;object-fit:contain;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;min-width:0;}
.brand-text strong{font-family:var(--mincho);font-size:18px;font-weight:800;letter-spacing:.03em;}
.brand-text span{font-size:11.5px;color:var(--ink-soft);font-weight:500;}

.top-actions{display:flex;align-items:center;gap:7px;}
.divider{width:1px;height:24px;background:var(--line);margin:0 3px;}

.btn{
  display:inline-flex;align-items:center;gap:7px;
  border:none;border-radius:11px;padding:9px 14px;
  font-size:13.5px;font-weight:700;color:var(--ink);
  background:var(--surface-2);transition:.15s;white-space:nowrap;min-height:40px;
}
.btn svg{flex:none;}
.btn:hover{transform:translateY(-1px);}
.btn:active{transform:translateY(0);}
.btn.ghost{background:transparent;color:var(--ink-soft);}
.btn.ghost:hover{background:var(--surface-2);color:var(--ink);}
.btn.ghost:disabled{opacity:.32;cursor:not-allowed;transform:none;}
.btn.primary{background:var(--terra);color:#fff;box-shadow:var(--shadow-sm);}
.btn.primary:hover{background:#cf5331;}
.btn.soft{background:var(--terra-soft);color:var(--terra);}
.btn.soft:hover{background:#f7e2d8;}
.btn.block{width:100%;justify-content:center;}
.btn.icon-only{padding:9px;width:40px;justify-content:center;}

.only-mobile{display:none;}

/* ===== 本体レイアウト ===== */
.body{flex:1;display:flex;min-height:0;}

/* ===== サイドバー ===== */
.sidebar{
  width:272px;flex:none;background:var(--surface);
  border-right:1px solid var(--line);
  padding:18px 16px;overflow-y:auto;
  display:flex;flex-direction:column;gap:22px;
}
.panel-title{
  font-family:var(--mono);font-size:11px;font-weight:700;letter-spacing:.14em;
  color:var(--ink-soft);margin:0 0 12px 2px;text-transform:uppercase;
}

.tools{display:flex;flex-direction:column;gap:9px;}
.tool{
  display:flex;align-items:center;gap:12px;width:100%;text-align:left;
  border:1.5px solid var(--line);background:var(--surface);
  border-radius:var(--radius-sm);padding:11px 12px;transition:.15s;
}
.tool:hover{border-color:#dcd2bd;background:var(--surface-2);}
.tool.active{border-color:var(--terra);background:var(--terra-soft);}
.tool-ico{
  display:flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:10px;flex:none;
  color:var(--c);background:color-mix(in srgb,var(--c) 13%,#fff);
}
.tool.active .tool-ico{background:color-mix(in srgb,var(--c) 20%,#fff);}
.tool-txt{display:flex;flex-direction:column;line-height:1.3;min-width:0;}
.tool-txt b{font-size:14px;font-weight:700;}
.tool-txt i{font-size:11.5px;font-style:normal;color:var(--ink-soft);}

.ctrl{margin-bottom:18px;}
.ctrl:last-child{margin-bottom:0;}
.ctrl-head{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:8px;}
.ctrl-head label{font-size:13px;font-weight:700;}
.ctrl-head output{
  font-family:var(--mono);font-size:12px;font-weight:700;color:var(--terra);
  background:var(--terra-soft);border-radius:6px;padding:1px 9px;min-width:34px;text-align:center;
}
.hint{font-size:11px;color:var(--ink-soft);margin:7px 2px 0;line-height:1.5;font-weight:500;}

/* スライダー */
input[type=range]{
  -webkit-appearance:none;appearance:none;width:100%;height:6px;
  background:var(--surface-2);border-radius:99px;outline:none;
}
input[type=range]::-webkit-slider-thumb{
  -webkit-appearance:none;width:22px;height:22px;border-radius:50%;
  background:#fff;border:3px solid var(--terra);cursor:pointer;
  box-shadow:0 2px 6px rgba(200,90,50,.4);transition:.12s;
}
input[type=range]::-webkit-slider-thumb:hover{transform:scale(1.1);}
input[type=range]::-moz-range-thumb{
  width:22px;height:22px;border-radius:50%;background:#fff;
  border:3px solid var(--terra);cursor:pointer;box-shadow:0 2px 6px rgba(200,90,50,.4);
}

/* ===== ステージ ===== */
.stage{flex:1;display:flex;flex-direction:column;min-width:0;position:relative;}
.stage-bar{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:10px clamp(12px,2vw,18px);background:rgba(255,255,255,.72);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--line);flex:none;
}
.seg{display:flex;align-items:center;gap:3px;background:var(--surface-2);border-radius:10px;padding:4px;}
.seg-label{font-size:12px;font-weight:700;color:var(--ink-soft);padding:0 7px 0 4px;}
.seg-btn{
  display:inline-flex;align-items:center;gap:6px;
  border:none;background:transparent;border-radius:7px;padding:6px 11px;
  font-size:13px;font-weight:700;color:var(--ink-soft);transition:.13s;min-height:34px;
}
.seg-btn:hover{color:var(--ink);}
.seg-btn.active{background:#fff;color:var(--ink);box-shadow:var(--shadow-sm);}
.swatch{width:14px;height:14px;border-radius:4px;border:1.5px solid rgba(0,0,0,.12);background:#9fd3c7;}

.zoom{display:flex;align-items:center;gap:6px;}
.zoom-btn{
  border:none;background:var(--surface-2);border-radius:9px;
  width:34px;height:34px;font-size:17px;font-weight:700;color:var(--ink);
  display:flex;align-items:center;justify-content:center;transition:.13s;
}
.zoom-btn.fit{width:auto;padding:0 12px;font-size:13px;}
.zoom-btn:hover{background:#ece3d4;}
.zoom output{font-family:var(--mono);font-size:12px;font-weight:700;min-width:46px;text-align:center;color:var(--ink-soft);}

/* ビューポート + キャンバス */
.viewport{
  flex:1;overflow:auto;min-height:0;position:relative;
  display:flex;align-items:center;justify-content:center;
  padding:clamp(18px,3vw,34px);
}
.canvas-wrap{
  position:relative;flex:none;border-radius:8px;
  box-shadow:0 18px 50px -22px rgba(60,40,20,.5);
  background-color:#fff;
  background-image:
    linear-gradient(45deg,#e7ddc9 25%,transparent 25%),
    linear-gradient(-45deg,#e7ddc9 25%,transparent 25%),
    linear-gradient(45deg,transparent 75%,#e7ddc9 75%),
    linear-gradient(-45deg,transparent 75%,#e7ddc9 75%);
  background-size:22px 22px;
  background-position:0 0,0 11px,11px -11px,-11px 0;
}
.canvas-wrap.bg-white{background:#fff;}
.canvas-wrap.bg-black{background:#211d18;}
.canvas-wrap.bg-color{background:var(--preview-color,#9fd3c7);}
.canvas-wrap.bg-white,.canvas-wrap.bg-black,.canvas-wrap.bg-color{background-image:none;}
#canvas{display:block;border-radius:8px;}
.cursor-layer{position:absolute;top:0;left:0;pointer-events:none;border-radius:8px;}
#canvas.tool-pick{cursor:crosshair;}
#canvas.tool-brush{cursor:none;}

.stage-foot{padding:9px 18px;background:var(--surface);border-top:1px solid var(--line);flex:none;}
.tip{margin:0;font-size:12.5px;color:var(--ink-soft);font-weight:500;text-align:center;}
.tip b{color:var(--terra);}

/* ドロップゾーン(編集中) */
.dropzone{
  position:absolute;inset:8px;display:none;align-items:center;justify-content:center;
  background:rgba(223,98,64,.1);backdrop-filter:blur(3px);z-index:20;
  border:3px dashed var(--terra);border-radius:14px;
}
.dropzone.show{display:flex;}
.dropzone-inner{display:flex;flex-direction:column;align-items:center;gap:10px;color:var(--terra);font-weight:800;font-size:18px;}

/* ===== スタート画面(画像選択) ===== */
.start{
  position:fixed;inset:0;z-index:100;background:var(--paper);
  display:flex;flex-direction:column;overflow:hidden;
}
.start.hidden{display:none;}
.start-scroll{
  flex:1;display:flex;align-items:flex-start;justify-content:center;
  padding:24px;overflow:auto;min-height:0;
}
.start-kanji{
  position:absolute;font-family:var(--mincho);font-weight:800;
  font-size:min(48vw,560px);line-height:.7;color:var(--terra);opacity:.05;
  right:-3%;bottom:-12%;pointer-events:none;user-select:none;
}
.start-card{
  position:relative;z-index:1;width:100%;max-width:540px;text-align:center;margin:auto;
}
.start-kick{font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--terra);font-weight:700;display:inline-flex;align-items:center;gap:9px;}
.start-kick::before,.start-kick::after{content:"";width:18px;height:1.5px;background:var(--terra);}
.start h1{font-family:var(--mincho);font-weight:800;font-size:clamp(28px,5vw,42px);line-height:1.3;margin:16px 0 0;}
.start .sub{color:var(--ink-soft);font-size:15px;margin:14px auto 0;max-width:30em;line-height:1.9;}
.start-drop{
  margin-top:30px;border:2px dashed var(--line);border-radius:20px;
  background:var(--surface);padding:clamp(28px,5vw,46px) 24px;transition:.18s;
}
.start-drop.drag{border-color:var(--terra);background:var(--terra-soft);transform:scale(1.01);}
.start-drop .ico{
  width:64px;height:64px;border-radius:50%;background:var(--terra-soft);color:var(--terra);
  display:flex;align-items:center;justify-content:center;margin:0 auto 16px;
}
.start-drop .big{font-size:17px;font-weight:700;}
.start-drop .small{font-size:13px;color:var(--ink-soft);margin:4px 0 20px;}
.start-drop .btn{font-size:15px;padding:14px 28px;min-height:52px;border-radius:13px;}
.start-alt{margin-top:22px;font-size:14px;font-weight:700;}
.start-alt a{color:var(--terra);border-bottom:1.5px solid currentColor;padding-bottom:1px;cursor:pointer;}
.start-note{margin-top:26px;font-family:var(--mono);font-size:11px;letter-spacing:.04em;color:var(--ink-soft);}

/* ===== 保存画面(STEP 3) ===== */
.save{
  position:fixed;inset:0;z-index:100;background:var(--paper);
  display:flex;flex-direction:column;overflow:hidden;
}
.save.hidden{display:none;}
.save-scroll{
  flex:1;display:flex;align-items:flex-start;justify-content:center;
  padding:clamp(24px,5vh,56px) 24px;overflow:auto;min-height:0;
}
.save-card{position:relative;z-index:1;width:100%;max-width:520px;text-align:center;margin:auto;}
.save-title{font-family:var(--mincho);font-weight:800;font-size:clamp(28px,5vw,40px);line-height:1.25;margin:14px 0 0;}
.save .sub{color:var(--ink-soft);font-size:15px;margin:12px auto 0;max-width:30em;line-height:1.9;}
.save-preview{
  margin:26px auto 0;border-radius:16px;width:min(300px,72vw);aspect-ratio:1;
  border:1px solid var(--line);box-shadow:var(--shadow);overflow:hidden;
}
.save-preview img{width:100%;height:100%;object-fit:contain;display:block;}
.save-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:26px;}
.save-actions .btn{font-size:15px;padding:14px 24px;min-height:52px;border-radius:13px;}
.save-links{display:flex;justify-content:center;gap:22px;flex-wrap:wrap;margin-top:26px;font-size:14px;font-weight:700;}
.save-links a{color:var(--terra);cursor:pointer;}
.save-links a:hover{text-decoration:underline;}

/* アプリ内フッター（法務リンク。スタート画面・保存画面の下部に表示） */
.app-foot{display:flex;justify-content:center;flex-wrap:wrap;gap:8px 18px;margin-top:34px;
  font-size:12.5px;font-weight:700;color:var(--ink-soft);}
.app-foot a{color:var(--ink-soft);}
.app-foot a:hover{color:var(--terra);}

/* トースト */
.toast{
  position:fixed;bottom:26px;left:50%;transform:translateX(-50%) translateY(20px);
  background:var(--ink);color:#fff;padding:11px 20px;border-radius:12px;
  font-size:14px;font-weight:700;box-shadow:0 12px 30px -10px rgba(0,0,0,.5);
  opacity:0;pointer-events:none;transition:.25s;z-index:200;
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0);}

/* ===== レスポンシブ: タブレット/スマホ ===== */
@media(max-width:860px){
  .brand-text span{display:none;}
  .only-mobile{display:inline-flex;}
  .hide-mobile{display:none;}

  .body{flex-direction:column;}

  /* サイドバー → 下部ドック */
  .sidebar{
    width:auto;order:2;flex:none;flex-direction:column;
    border-right:none;border-top:1px solid var(--line);
    padding:10px 12px calc(10px + env(safe-area-inset-bottom));
    gap:10px;max-height:none;overflow:visible;
    box-shadow:0 -10px 30px -20px rgba(70,50,30,.4);
  }
  .panel-title{display:none;}
  .panel.panel-tools{order:2;}
  .panel.panel-settings{order:1;}
  .panel.panel-image{display:none;}

  /* ツールを横並び */
  .tools{flex-direction:row;gap:8px;}
  .tool{flex:1;flex-direction:column;gap:5px;padding:9px 6px;text-align:center;min-width:0;}
  .tool-ico{width:30px;height:30px;}
  .tool-txt i{display:none;}
  .tool-txt b{font-size:12px;}

  /* 設定スライダーを横長コンパクトに */
  .ctrl{margin-bottom:0;}
  .panel-settings{display:flex;flex-direction:column;gap:8px;}
  .ctrl .hint{display:none;}
  .ctrl-head{margin-bottom:5px;}

  .stage{order:1;flex:1;min-height:0;}
  .stage-foot{display:none;}
  .seg-label{display:none;}
}

@media(max-width:560px){
  .brand-text strong{font-size:16px;}
  .btn.hide-xs{display:none;}
  .seg-btn{padding:6px 9px;}
}