.subtitle { font-size: 12px; color: var(--ink-light); font-weight: 300; letter-spacing: 0.1em; border-left: 2px solid var(--accent); padding-left: 10px; }

    /* Drop Zone */

    /* Workspace */
    .workspace { display: grid; grid-template-columns: 1fr 320px; gap: 20px; align-items: start; }

    /* Canvas Panel */
    .canvas-panel { border: 1px solid var(--border); background: var(--card); display: flex; flex-direction: column; }
    .panel-header { display: flex; align-items: center; justify-content: space-between; padding: 10px 16px; border-bottom: 1px solid var(--border); background: var(--bg); }
    .panel-header-left { display: flex; align-items: center; gap: 10px; }
    .panel-label { font-size: 10px; letter-spacing: 0.2em; color: var(--ink-light); text-transform: uppercase; }
    .hint-text { font-size: 10px; color: var(--ink-light); }
    .canvas-wrap { flex: 1; min-height: 380px; display: flex; align-items: center; justify-content: center; padding: 20px; background: repeating-conic-gradient(#E8EAED 0% 25%, #F8F9FA 0% 50%) 0 0 / 16px 16px; position: relative; overflow: hidden; }
    #editCanvas { display: block; max-width: 100%; max-height: 560px; cursor: default; }
    .panel-footer { padding: 10px 16px; border-top: 1px solid var(--border); background: var(--bg); display: flex; align-items: center; justify-content: space-between; }

    /* Sidebar */
    .sidebar { display: flex; flex-direction: column; gap: 1px; background: var(--rule); border: 1px solid var(--border); }
    .sidebar-section { background: var(--card); padding: 14px 16px; }
    .sidebar-title { font-size: 9px; letter-spacing: 0.25em; color: var(--ink-light); text-transform: uppercase; margin-bottom: 12px; display: flex; align-items: center; justify-content: space-between; }

    /* Text layers list */
    .layer-list { display: flex; flex-direction: column; gap: 4px; margin-bottom: 8px; max-height: 180px; overflow-y: auto; }
    .layer-item { display: flex; align-items: center; gap: 6px; padding: 6px 8px; border: 1px solid var(--border); cursor: pointer; transition: background 0.1s; background: var(--bg); }
    .layer-item:hover { background: #FFFFFF; }
    .layer-item.active { background: var(--blue); border-color: var(--blue); }
    .layer-item.active .layer-text-preview { color: white; }
    .layer-item.active .layer-remove,
    .layer-item.active .layer-order-btn { color: rgba(255,255,255,0.7); }
    .layer-item.dragging { opacity: 0.3; }
    .layer-drop-indicator { height: 2px; background: var(--blue); pointer-events: none; margin: 0; border-radius: 1px; flex-shrink: 0; }
    .layer-drag-handle { font-size: 13px; color: var(--ink-xlight); cursor: grab; padding: 0 2px; flex-shrink: 0; user-select: none; line-height: 1; touch-action: none; }
    .layer-drag-handle:active { cursor: grabbing; }
    .layer-item.active .layer-drag-handle { color: rgba(255,255,255,0.5); }
    .layer-text-preview { flex: 1; font-size: 12px; color: var(--ink); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0; font-weight: 300; }
    .layer-order-btn { font-size: 11px; background: none; border: none; cursor: pointer; color: var(--ink-light); padding: 0 2px; flex-shrink: 0; line-height: 1; transition: color 0.15s; }
    .layer-order-btn:hover { color: var(--blue); }
    .layer-order-btn:disabled { opacity: 0.2; cursor: default; }
    .layer-remove { font-size: 13px; background: none; border: none; cursor: pointer; color: var(--ink-light); padding: 0 2px; flex-shrink: 0; transition: color 0.15s; }
    .layer-remove:hover { color: var(--accent); }
    .add-layer-btn { font-size: 10px; letter-spacing: 0.1em; border: 1px dashed var(--rule); background: transparent; color: var(--ink-light); padding: 7px; width: 100%; cursor: pointer; transition: all 0.15s; }
    .add-layer-btn:hover { border-color: var(--blue); color: var(--blue); }

    /* Text input */
    .text-input { width: 100%; font-family: var(--sans); font-size: 13px; font-weight: 300; color: var(--ink); border: 1px solid var(--border); background: var(--bg); padding: 8px 10px; outline: none; resize: vertical; min-height: 56px; transition: border-color 0.15s; }
    .text-input:focus { border-color: var(--blue); }
    .text-input.readable-textarea {
      min-height: 86px;
      padding: 14px 16px;
      background: #fff;
      color: var(--ink);
      font-family: "Noto Sans JP", Consolas, "Courier New", monospace;
      font-size: 14px;
      font-weight: 400;
      line-height: 1.75;
      border: 1px solid var(--border);
      resize: vertical;
    }
    .text-input.readable-textarea::placeholder {
      color: var(--ink-light);
      font-weight: 400;
    }
    .text-input.readable-textarea:focus {
      border-color: var(--blue);
      box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.08);
    }

    /* Font selector */
    .font-select { width: 100%; font-family: var(--sans); font-size: 12px; color: var(--ink); border: 1px solid var(--border); background: var(--bg); padding: 7px 10px; outline: none; cursor: pointer; appearance: none; }
    .font-select:focus { border-color: var(--blue); }
    .font-select option { font-size: 14px; padding: 6px 10px; }
    .font-select optgroup { font-family: var(--sans); font-size: 11px; color: var(--ink-light); }

    /* Sliders */
    .slider-row { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
    .slider-row:last-child { margin-bottom: 0; }
    .slider-row-label { font-size: 10px; color: var(--ink-light); width: 52px; flex-shrink: 0; }
    .slider-val { font-size: 11px; color: var(--ink); min-width: 32px; text-align: right; }

    /* Color */
    .color-row { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
    .color-row:last-child { margin-bottom: 0; }
    .color-row-label { font-size: 10px; color: var(--ink-light); width: 52px; flex-shrink: 0; }
    .color-row .color-swatch { width: 42px; height: 32px; border-radius: 6px; }
    .color-row .color-hex { font-size: 12px; line-height: 32px; min-width: 72px; text-align: center; }
    .color-presets { gap: 7px; }
    .color-presets .cp { width: 26px; height: 26px; border-radius: 5px; }

    /* Toggle buttons (bold/italic/align) */
    .toggle-btns { display: flex; gap: 4px; flex-wrap: wrap; }
    .toggle-btn { font-size: 11px; padding: 5px 10px; border: 1px solid var(--border); background: transparent; color: var(--ink-light); cursor: pointer; transition: all 0.15s; }
    .toggle-btn:hover { border-color: var(--blue); color: var(--blue); }
    .toggle-btn.active { background: var(--blue); color: #fff; border-color: var(--blue); }
    .toggle-btn.wide { padding: 5px 14px; }

    /* Background box */
    .bg-box-wrap { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
    .toggle-chk-label { font-size: 11px; color: var(--ink); font-weight: 300; cursor: pointer; }

    /* Position controls */
    .pos-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 3px; width: 90px; }
    .pos-btn { font-size: 14px; border: 1px solid var(--border); background: transparent; cursor: pointer; padding: 6px 0; text-align: center; transition: all 0.15s; }
    .pos-btn:hover { border-color: var(--blue); background: var(--blue-light); }
    .pos-btn.active { background: var(--blue); border-color: var(--blue); }
    .multi-align-box { margin-top: 14px; padding-top: 12px; border-top: 1px solid var(--border); }
    .multi-align-title { font-family: var(--mono); font-size: 9px; color: var(--ink-light); letter-spacing: 0.15em; margin-bottom: 6px; }
    .multi-align-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; }
    .multi-align-btn { font-size: 11px; border: 1px solid var(--border); background: transparent; color: var(--ink-light); cursor: pointer; padding: 7px 0; text-align: center; transition: all 0.15s; }
    .multi-align-btn:hover { border-color: var(--blue); background: var(--blue-light); color: var(--blue); }
    .multi-align-note { font-size: 10px; color: var(--ink-light); line-height: 1.6; margin-top: 7px; }

    /* Output format */

    /* Actions */
    .action-section { background: var(--card); padding: 16px; display: flex; flex-direction: column; gap: 8px; }
    .apply-btn { font-size: 11px; letter-spacing: 0.15em; background: var(--blue); color: #fff; border: none; height: 44px; width: 100%; cursor: pointer; transition: background 0.15s, transform 0.1s; display: flex; align-items: center; justify-content: center; gap: 8px; }
    .apply-btn:hover { background: var(--blue); }
    .apply-btn:active { transform: scale(0.98); }
    .apply-btn:disabled { opacity: 0.35; cursor: not-allowed; }
    .apply-btn:disabled:hover { background: var(--blue); }

    .is-applying .spinner { display: block; }
    .is-applying .btn-label { display: none; }

    
    .canvas-panel { position: sticky; top: 18px; align-self: start; }
    .sidebar.image-text-sidebar { gap: 0; overflow: hidden; }
    .it-tabs {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      border-bottom: 1px solid var(--border);
      background: #fff;
      position: sticky;
      top: 0;
      z-index: 2;
    }
    .it-tab-btn {
      border: none;
      border-right: 1px solid var(--border);
      background: #fff;
      color: var(--ink-light);
      font-size: 11px;
      font-weight: 700;
      letter-spacing: .06em;
      min-height: 46px;
      padding: 0 6px;
      cursor: pointer;
    }
    .it-tab-btn:last-child { border-right: none; }
    .it-tab-btn:hover { background: #F8FBFF; color: var(--blue); }
    .it-tab-btn.active { background: var(--blue-light); color: var(--blue); box-shadow: inset 0 -2px 0 var(--blue); }
    .it-tab-panels { min-height: 560px; }
    .it-tab-panel { display: none; }
    .it-tab-panel.active { display: block; }
    .it-tab-panel .sidebar-section + .sidebar-section { border-top: 1px solid var(--border); }
    .it-mini-note { font-size: 10px; color: var(--ink-light); line-height: 1.6; margin-top: 8px; }

    @media (max-width: 1000px) {
      header, main, .page-hero, footer { padding-left: 20px; padding-right: 20px; }
      .workspace { grid-template-columns: 1fr; }
      .canvas-panel { position: static; }
      .it-tabs { grid-template-columns: repeat(3, minmax(0, 1fr)); }
      .it-tab-panels { min-height: 0; }
      .sidebar { order: -1; }
    }
    @media (max-width: 560px) {
      .it-tabs { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    }