:root{--bg:#1f1f23;--bg-2:#26262c;--bg-3:#2d2d35;--fg:#e6e6ea;--fg-2:#a0a0a8;--accent:#4f8cff;--accent-2:#2a5cc9;--warn:#e8a93d;--danger:#e35a5a;--ok:#4ec07a;--border:#3a3a44}*{box-sizing:border-box}[hidden]{display:none!important}html,body{background:var(--bg);color:var(--fg);height:100vh;margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Hiragino Sans,Hiragino Kaku Gothic ProN,Meiryo,sans-serif;font-size:14px;overflow:hidden}body{flex-direction:column;display:flex}.app-header{border-bottom:1px solid var(--border);background:var(--bg-2);align-items:center;gap:16px;padding:10px 16px;display:flex}.app-header h1{margin:0;font-size:16px;font-weight:600}.app-header .sub{color:var(--fg-2);margin:2px 0 0;font-size:12px}.app-progress{margin-left:auto}.progress-text{color:var(--fg-2);font-size:12px}.toolbar{background:var(--bg-2);border-bottom:1px solid var(--border);flex-wrap:wrap;align-items:center;gap:8px;padding:8px 12px;display:flex}.toolbar-sep{background:var(--border);width:1px;height:22px}.toolbar-spacer{flex:1}.tb-check{color:var(--fg);align-items:center;gap:4px;font-size:12px;display:inline-flex}button{border:1px solid var(--border);background:var(--bg-3);color:var(--fg);cursor:pointer;border-radius:4px;padding:6px 12px;font-size:13px}button:hover:not(:disabled){background:#383842}button:disabled{opacity:.5;cursor:not-allowed}button.primary{background:var(--accent);border-color:var(--accent);color:#fff}button.primary:hover:not(:disabled){background:var(--accent-2)}button.warning{background:var(--warn);border-color:var(--warn);color:#1f1f23}button.danger{background:var(--danger);border-color:var(--danger);color:#fff}.badge{background:var(--bg-3);color:var(--fg-2);border-radius:10px;padding:3px 8px;font-size:11px;display:inline-block}.badge.ok{color:var(--ok);background:#4ec07a26}.badge.warn{color:var(--warn);background:#e8a93d26}.main{flex:1;min-height:0;display:flex}.sidebar{border-right:1px solid var(--border);background:var(--bg-2);flex-direction:column;width:280px;display:flex}.sidebar-head{border-bottom:1px solid var(--border);justify-content:space-between;padding:10px 12px;font-size:13px;font-weight:600;display:flex}.count{color:var(--fg-2);font-weight:400}.tree{flex:1;padding:8px 4px;overflow-y:auto}.tree .empty{color:var(--fg-2);padding:8px 12px;font-size:13px}.tree-folder{font-size:12px}.tree-folder-head{color:var(--fg-2);-webkit-user-select:none;user-select:none;padding:4px 8px;font-weight:600}.tree-image{cursor:pointer;border-radius:3px;align-items:center;gap:6px;margin:1px 4px;padding:5px 8px 5px 20px;font-size:12px;display:flex}.tree-image:hover{background:var(--bg-3)}.tree-image.active{background:var(--accent-2);color:#fff}.tree-image-name{text-overflow:ellipsis;white-space:nowrap;flex:1;overflow:hidden}.tree-image-status{background:var(--bg-3);border-radius:8px;padding:1px 5px;font-size:10px}.tree-image.active .tree-image-status{background:#fff3}.tree-image-status.edited{color:var(--warn);background:#e8a93d4d}.tree-image-status.saved{color:var(--ok);background:#4ec07a4d}.tree-image-status.err{color:var(--danger);background:#e35a5a4d}.editor-area{flex-direction:column;flex:1;min-width:0;display:flex}.editor-toolbar{border-bottom:1px solid var(--border);background:var(--bg-2);flex-wrap:wrap;align-items:center;gap:14px;padding:10px 16px;display:flex}.tb-group{color:var(--fg-2);align-items:center;gap:6px;font-size:12px;display:inline-flex}.tb-group label{color:var(--fg)}.tb-group input[type=range]{width:100px}select{background:var(--bg-3);color:var(--fg);border:1px solid var(--border);border-radius:4px;padding:3px 6px}.canvas-wrap{background:#161618;flex:1;justify-content:center;align-items:center;min-height:0;display:flex;position:relative;overflow:auto}.canvas-wrap 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p{margin:0;font-size:13px;line-height:1.6}.mode-indicator{color:var(--fg-2);font-size:12px}.folder-diagram{background:var(--bg-2);border:1px solid var(--border);border-radius:8px;flex-direction:column;gap:12px;padding:18px 22px;display:flex}.diagram-caption{color:var(--fg-2);font-size:13px}.diagram-tree{background:var(--bg-3);border-radius:6px;padding:14px 18px;font-family:ui-monospace,SF Mono,Menlo,monospace;font-size:13px;line-height:1.65}.dt-row{white-space:pre}.dt-pipe{color:var(--fg-2)}.dt-folder{color:var(--fg);font-weight:600}.dt-image{color:var(--ok);background:#4ec07a14;border-radius:3px;margin:1px 0;padding-right:8px}.diagram-result{color:var(--fg);align-items:center;gap:10px;font-size:13px;display:flex}.diagram-result-icon{color:var(--accent);font-size:18px;font-weight:700}.diagram-result strong{color:var(--ok)}.mini-diagram{background:var(--bg-2);color:var(--fg-2);border-radius:5px;align-items:center;gap:10px;margin-top:10px;padding:10px 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.tutorial-arrow{display:none}.tutorial-body{position:relative}.tutorial-head{align-items:center;gap:10px;margin-bottom:8px;display:flex}.tutorial-step-no{letter-spacing:.5px;background:#ffffff38;border-radius:10px;padding:2px 8px;font-size:11px;font-weight:700}.tutorial-title{flex:1;font-size:14.5px;font-weight:700}.tutorial-text{margin:0 0 12px;font-size:12.5px;line-height:1.65}.tutorial-text strong{font-weight:700}.tutorial-text kbd{color:#fff;background:#ffffff2e;border:1px solid #ffffff80;border-radius:4px;margin:0 1px;padding:1px 7px;font-family:ui-monospace,SF Mono,Menlo,monospace;font-size:11px;font-weight:700;display:inline-block}.tutorial-actions{justify-content:flex-end;align-items:center;gap:8px;display:flex}.tutorial-actions .primary{color:var(--accent);background:#fff;border-color:#fff;font-weight:700}.tutorial-actions .primary:hover:not(:disabled){background:#eef3ff}.tutorial-skip{color:#fff;background:0 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h3{margin:0;font-size:14px}.modal-count{color:var(--fg-2);font-size:12px}.modal-spacer{flex:1}.modal-rootname{color:var(--accent);border-bottom:1px solid var(--border);padding:10px 18px;font-family:ui-monospace,SF Mono,Menlo,monospace;font-size:12px}.modal-list{flex:1;padding:8px 18px 16px;overflow:auto}.modal-list .empty{color:var(--fg-2);font-size:13px}.modal-folder-head{color:var(--fg-2);margin:10px 0 4px;font-family:ui-monospace,SF Mono,Menlo,monospace;font-size:11px}.modal-file-row{border-radius:4px;align-items:center;gap:10px;padding:4px 8px;font-size:12px;display:flex}.modal-file-row:hover{background:var(--bg-3)}.modal-file-name{color:var(--fg);flex:1;font-family:ui-monospace,SF Mono,Menlo,monospace}.modal-file-size{color:var(--fg-2);font-variant-numeric:tabular-nums}.modal-actions{border-top:1px solid var(--border);justify-content:flex-end;margin-top:14px;padding-top:14px;display:flex}