.pt-wrap{
      --base:#FFFFFF;
      --base-light:#FAFAFA;
      --base-dark:#F5F5F5;
      --main:#1e3a5f;
      --main-light:#2d5a8f;
      --main-dark:#0f1e3a;
      --accent:#d4af37;
      --accent-light:#f4cf5f;
      --accent-dark:#b8941f;
      --text:#2C3E50;
      --text-light:#7F8C8D;
      --border:#E8E8E8;
      --shadow:0 4px 20px rgba(30,58,95,.10);
      --shadow-hover:0 8px 30px rgba(30,58,95,.15);
      --danger:#c0392b;
      --sidebar-w:300px;
    }
    .pt-wrap *{box-sizing:border-box;margin:0;padding:0}
    .pt-wrap{
      font-family:"Yu Gothic","Hiragino Kaku Gothic ProN",Meiryo,system-ui,sans-serif;
      color:var(--text);
      background:#f0f4f8;
      height:100vh;
      overflow:hidden;
      display:flex;
    }

    /* ===== 左サイドバー ===== */
    .pt-sidebar{
      width:var(--sidebar-w);
      flex-shrink:0;
      height:100vh;
      display:flex;
      flex-direction:column;
      background:var(--main);
      box-shadow:4px 0 20px rgba(30,58,95,.18);
      position:relative;
      overflow:hidden;
    }
    .pt-sidebar::before{
      content:"";position:absolute;inset:0 auto 0 -150%;width:250%;
      background:linear-gradient(90deg,transparent,rgba(212,175,55,.10),transparent);
      animation:shine 5s infinite;pointer-events:none;
    }
    @keyframes shine{0%{transform:translateX(0)}100%{transform:translateX(60%)}}

    .pt-sidebar-title{
      flex-shrink:0;padding:22px 20px 18px;
      border-bottom:2px solid rgba(212,175,55,.35);
      position:relative;z-index:1;
    }
    .pt-sidebar-title h1{font-size:19px;font-weight:900;color:#fff;letter-spacing:.04em;line-height:1.3}
    .pt-sidebar-title h1 span{display:block;font-size:11px;font-weight:700;color:rgba(255,255,255,.6);letter-spacing:.06em;margin-bottom:5px}

    .pt-sidebar-body{
      flex:1;display:flex;flex-direction:column;
      padding:12px 14px 12px;gap:9px;
      overflow-y:auto;overflow-x:hidden;
      position:relative;z-index:1;min-height:0;
    }
    .pt-sidebar-body::-webkit-scrollbar{width:4px}
    .pt-sidebar-body::-webkit-scrollbar-thumb{background:rgba(255,255,255,.15);border-radius:2px}

    /* セクションラベル */
    .pt-sec-label{
      flex-shrink:0;font-size:10px;font-weight:900;
      color:rgba(255,255,255,.45);letter-spacing:.08em;
      border-top:1px solid rgba(255,255,255,.10);padding-top:7px;margin-top:1px;
    }

    /* モード切替タブ */
    .pt-mode-tabs{display:flex;border-radius:10px;overflow:hidden;border:2px solid rgba(212,175,55,.5);flex-shrink:0}
    .pt-mode-tab{
      flex:1;padding:9px 4px;font-size:12px;font-weight:900;text-align:center;
      cursor:pointer;background:transparent;color:rgba(255,255,255,.65);border:none;transition:.2s;
    }
    .pt-mode-tab.pt-active{background:var(--accent);color:var(--main-dark)}

    /* コントロールカード */
    .pt-control-card{
      background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.14);
      border-radius:12px;padding:11px;flex-shrink:0;
    }
    .pt-control-card.pt-paint-card{background:rgba(212,175,55,.12);border-color:rgba(212,175,55,.35)}
    .pt-control-label{
      display:block;font-weight:900;color:rgba(255,255,255,.85);
      margin-bottom:7px;font-size:12px;
    }

    /* 選択色表示 */
    .pt-color-row{display:flex;align-items:center;gap:9px;font-size:12px;color:rgba(255,255,255,.65)}
    #ptSelectedColorBox{display:inline-block;width:38px;height:24px;border:2px solid rgba(255,255,255,.4);border-radius:5px;background:#ccc;flex-shrink:0}
    #ptSelectedColorText{font-size:11px;color:rgba(255,255,255,.55)}

    /* ペンキ色 */
    .pt-paint-color-row{display:flex;align-items:center;gap:9px}
    #ptPaintColorPicker{width:38px;height:30px;border:none;padding:0;cursor:pointer;border-radius:7px;background:transparent}
    .pt-paint-color-label{font-size:12px;color:rgba(255,255,255,.65)}

    /* スライダー */
    .pt-slider-container{display:flex;align-items:center;gap:10px}
    .pt-wrap input[type="range"]{
      flex:1;height:5px;border-radius:3px;outline:none;-webkit-appearance:none;border:none;padding:0;
      background:linear-gradient(to right,var(--accent-dark),var(--accent));
    }
    .pt-wrap input[type="range"]::-webkit-slider-thumb{
      -webkit-appearance:none;width:18px;height:18px;border-radius:50%;
      background:#fff;border:3px solid var(--accent);cursor:pointer;box-shadow:0 2px 6px rgba(0,0,0,.2);
    }
    .pt-slider-value{font-size:14px;font-weight:900;color:var(--accent-light);min-width:34px;text-align:center}

    /* チェックボックス */
    .pt-checkbox-group{display:flex;flex-direction:column;gap:7px}
    .pt-checkbox-group label{display:flex;align-items:center;gap:7px;font-size:12px;color:rgba(255,255,255,.75);cursor:pointer}
    .pt-checkbox-group input[type="checkbox"]{width:14px;height:14px;accent-color:var(--accent);flex-shrink:0}

    /* ボタン */
    .pt-btn{
      width:100%;padding:10px;font-size:13px;font-weight:900;
      border:none;border-radius:11px;cursor:pointer;transition:.2s;flex-shrink:0;
    }
    .pt-btn:hover:not(:disabled){transform:translateY(-2px)}
    .pt-btn:disabled{opacity:.35;cursor:not-allowed;transform:none}
    .pt-btn-primary{background:linear-gradient(135deg,var(--main-light),var(--main));color:#fff;box-shadow:0 3px 10px rgba(30,58,95,.25)}
    .pt-btn-success{background:linear-gradient(135deg,var(--accent-light),var(--accent));color:var(--main-dark);box-shadow:0 3px 10px rgba(212,175,55,.25)}
    .pt-btn-warning{background:rgba(255,255,255,.12);color:rgba(255,255,255,.8);border:2px solid rgba(255,255,255,.2)}
    .pt-btn-danger{background:rgba(192,57,43,.25);color:rgba(255,255,255,.85);border:2px solid rgba(192,57,43,.4)}
    .pt-btn-orange{background:rgba(212,175,55,.18);color:var(--accent-light);border:2px solid rgba(212,175,55,.35)}
    .pt-btn-row{display:flex;gap:7px;flex-shrink:0}
    .pt-btn-row .pt-btn{flex:1}

    /* プログレス */
    .pt-progress-wrap{display:none;flex-shrink:0}
    .pt-progress-wrap.show{display:block}
    .pt-progress-bar-bg{background:rgba(255,255,255,.15);border-radius:999px;height:8px;overflow:hidden}
    .pt-progress-bar-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--accent-dark),var(--accent));transition:width .3s;width:0%}
    .pt-progress-text{text-align:center;font-size:11px;color:rgba(255,255,255,.55);margin-top:4px}

    /* パネル表示切替 */
    .pt-panel-bg{display:flex;flex-direction:column;gap:9px}
    .pt-panel-paint{display:none;flex-direction:column;gap:9px}
    .pt-paint-mode .pt-panel-bg{display:none}
    .pt-paint-mode .pt-panel-paint{display:flex}

    /* ===== 右メインエリア ===== */
    .pt-main{flex:1;height:100vh;display:flex;flex-direction:column;min-width:0;overflow:hidden}

    /* ステータスバー */
    #ptStatus{
      flex-shrink:0;padding:8px 18px;font-size:12px;font-weight:800;
      display:none;border-bottom:1px solid var(--border);
    }
    #ptStatus.show{display:block}
    #ptStatus.info{background:#e8f0fb;color:var(--main)}
    #ptStatus.success{background:#edfaf3;color:#1a7a46}
    #ptStatus.warning{background:#fffbe6;color:#8a6200}

    /* メインヘッド */
    .pt-main-head{
      flex-shrink:0;padding:13px 18px 10px;border-bottom:2px solid var(--border);
      background:#fff;display:flex;align-items:center;justify-content:space-between;gap:10px;
    }
    .pt-main-head-title{font-size:14px;font-weight:900;color:var(--main);display:flex;align-items:center;gap:8px}
    .pt-main-head-title::before{content:"";display:block;width:4px;height:18px;background:var(--accent);border-radius:3px}
    .pt-count-badge{background:var(--main);color:#fff;border-radius:999px;font-size:11px;font-weight:900;padding:2px 9px}

    /* アップロードエリア */
    .pt-upload-area{
      flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;
      border:3px dashed var(--border);border-radius:20px;margin:16px;
      background:#fff;cursor:pointer;transition:.2s;text-align:center;padding:30px;
    }
    .pt-upload-area:hover,.upload-area.dragover{border-color:var(--accent);background:#fffdf5}
    .pt-upload-icon{font-size:44px;margin-bottom:10px;line-height:1}
    .pt-upload-text{font-size:16px;font-weight:900;color:var(--main);margin-bottom:5px}
    .pt-upload-subtext{font-size:12px;color:var(--text-light);line-height:1.6}
    #ptFileInput{display:none}

    /* メインレイアウト（Canvas + サムネイル）*/
    .pt-main-layout{display:none;flex:1;flex-direction:column;min-height:0;overflow:hidden}
    .pt-main-layout.show{display:flex}

    /* Canvasエリア */
    .pt-canvas-area{
      flex:1;min-height:0;display:flex;flex-direction:column;
      background:repeating-conic-gradient(#f4f4f4 0 25%,#fff 0 50%) 50%/18px 18px;
      overflow:hidden;position:relative;
    }
    .pt-canvas-label{
      position:absolute;top:0;left:0;right:0;z-index:2;
      background:rgba(30,58,95,.82);color:#fff;font-size:12px;font-weight:800;
      padding:6px 14px;
    }
    #ptCanvas{
      max-width:100%;max-height:100%;display:block;margin:auto;
      border-radius:4px;box-shadow:0 4px 16px rgba(0,0,0,.12);
      margin-top:32px;
    }
    #ptCanvas.pt-mode-bg{cursor:crosshair}
    #ptCanvas.pt-mode-paint{cursor:cell}

    /* サムネイルセクション */
    .pt-thumb-section{display:none;flex-shrink:0;border-top:2px solid var(--border);background:#fff}
    .pt-thumb-section.show{display:block}
    .pt-thumb-section-head{
      display:flex;align-items:center;justify-content:space-between;
      padding:9px 16px;border-bottom:1px solid var(--border);gap:8px;
    }
    .pt-thumb-section-title{font-size:13px;font-weight:900;color:var(--main);display:flex;align-items:center;gap:6px}
    .pt-thumb-section-title::before{content:"";display:block;width:3px;height:15px;background:var(--accent);border-radius:2px}
    .pt-thumb-scroll{overflow-x:auto;overflow-y:hidden;padding:10px 14px 12px}
    .pt-thumb-scroll::-webkit-scrollbar{height:4px}
    .pt-thumb-scroll::-webkit-scrollbar-thumb{background:rgba(30,58,95,.15);border-radius:2px}
    .pt-thumb-grid{display:flex;gap:10px;min-height:120px}

    /* サムネイルアイテム */
    .pt-thumb-item{
      flex-shrink:0;width:100px;border:2px solid var(--border);border-radius:11px;
      overflow:hidden;background:repeating-conic-gradient(#f0f0f0 0 25%,#fff 0 50%) 50%/12px 12px;
      position:relative;cursor:pointer;transition:.15s;
    }
    .pt-thumb-item:hover{border-color:rgba(30,58,95,.3);box-shadow:var(--shadow)}
    .pt-thumb-item.selected{border-color:var(--accent);border-width:3px}
    .pt-thumb-item img{width:100%;aspect-ratio:1;object-fit:contain;display:block}
    .pt-thumb-badge{position:absolute;top:3px;right:4px;font-size:13px;line-height:1}
    .pt-thumb-name{
      background:rgba(255,255,255,.92);font-size:10px;text-align:center;
      padding:3px 4px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text);
      cursor:text;border-top:1px solid var(--border);
    }
    .pt-thumb-name:hover{background:#fffdf4;color:var(--main)}
    .pt-thumb-del{
      display:block;width:100%;border:none;background:rgba(192,57,43,.12);
      color:var(--danger);font-size:10px;font-weight:900;padding:4px;
      cursor:pointer;transition:.15s;border-top:1px solid rgba(192,57,43,.18);
    }
    .pt-thumb-del:hover{background:rgba(192,57,43,.22)}
    .pt-thumb-name-input{
      width:100%;border:none;outline:none;background:#fffbe6;font-size:10px;
      text-align:center;padding:3px 4px;color:var(--text);font-family:inherit;
      border-top:1px solid var(--accent);
    }

    /* ダウンロードボタン */
    .pt-download-all-btn{
      display:none;margin:0 14px 10px;width:calc(100% - 28px);padding:12px;
      font-size:14px;font-weight:900;border:none;border-radius:12px;cursor:pointer;
      background:linear-gradient(135deg,var(--accent-light),var(--accent));
      color:var(--main-dark);box-shadow:0 4px 12px rgba(212,175,55,.28);transition:.2s;
    }
    .pt-download-all-btn:hover{transform:translateY(-2px);box-shadow:0 6px 18px rgba(212,175,55,.35)}
    .pt-download-all-btn.show{display:block}

    /* モーダル */
    .pt-modal-overlay{
      display:none;position:fixed;inset:0;
      background:rgba(0,0,0,.45);z-index:100;align-items:center;justify-content:center;
    }
    .pt-modal-overlay.show{display:flex}
    .pt-modal-box{
      background:#fff;border-radius:18px;padding:26px 22px;width:320px;
      box-shadow:0 20px 50px rgba(30,58,95,.25);border-top:4px solid var(--accent);
    }
    .pt-modal-title{font-size:15px;font-weight:900;color:var(--main);margin-bottom:15px}
    .pt-modal-field{margin-bottom:12px}
    .pt-modal-field label{display:block;font-size:11px;font-weight:900;color:var(--text-light);margin-bottom:4px}
    .pt-modal-field input[type="text"],.modal-field input[type="number"]{
      width:100%;padding:8px 10px;border:2px solid var(--border);
      border-radius:10px;font-size:14px;outline:none;color:var(--text);
    }
    .pt-modal-field input:focus{border-color:var(--accent)}
    .pt-modal-preview{
      background:var(--base-dark);border-radius:10px;padding:9px 12px;
      font-size:12px;color:var(--text-light);margin-bottom:14px;line-height:1.8;
    }
    .pt-modal-preview strong{color:var(--main)}
    .pt-modal-btns{display:flex;gap:9px}
    .pt-modal-btns .pt-btn{flex:1;padding:10px;color:#fff}
    .pt-modal-btns .pt-btn-primary{background:var(--main)}
    .pt-modal-btns .pt-btn-danger{background:var(--danger)}

    /* 使い方 */
    .info-box{
      background:rgba(255,255,255,.10);border-left:3px solid var(--accent);
      padding:9px 11px;border-radius:8px;font-size:11px;line-height:1.8;
      color:rgba(255,255,255,.7);flex-shrink:0;
    }
    .info-box strong{color:var(--accent-light)}

    /* バッチリネームボタン */
    .pt-btn-rename{
      width:auto;padding:6px 12px;font-size:11px;font-weight:900;
      background:var(--main-light);color:#fff;border:none;border-radius:8px;cursor:pointer;transition:.15s;
    }
    .pt-btn-rename:hover{background:var(--main-dark)}