:root{--bg: #0f172a;--panel: #1e293b;--panel-2: #334155;--text: #e2e8f0;--muted: #94a3b8;--accent: #38bdf8;--accent-2: #0284c7;--danger: #ef4444;--success: #22c55e;--border: #334155;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color-scheme:dark}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg);color:var(--text)}a{color:var(--accent)}button{background:var(--accent-2);color:#fff;border:0;border-radius:6px;padding:8px 14px;cursor:pointer;font:inherit}button:hover{background:var(--accent)}button.secondary{background:var(--panel-2)}button.danger{background:var(--danger)}button[disabled]{opacity:.5;cursor:not-allowed}input,textarea,select{background:var(--panel);color:var(--text);border:1px solid var(--border);border-radius:6px;padding:8px 10px;font:inherit;width:100%}textarea{min-height:80px;resize:vertical}label{display:block;font-size:13px;color:var(--muted);margin-bottom:4px}.app{display:flex;flex-direction:column;height:100vh;overflow:hidden}.topbar{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;background:var(--panel);border-bottom:1px solid var(--border)}.topbar h1{font-size:18px;margin:0}.topbar nav a{margin-right:16px;text-decoration:none}.topbar .right{display:flex;gap:12px;align-items:center}.main{flex:1;padding:24px;max-width:1280px;width:100%;margin:0 auto;display:flex;flex-direction:column;min-height:0;overflow-y:auto}.main-editor{max-width:none}.card{background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:16px;margin-bottom:12px}.card h2{margin:0 0 8px;font-size:16px}.row{display:flex;gap:12px;align-items:center}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:12px}.muted{color:var(--muted);font-size:13px}.empty{padding:40px;text-align:center;color:var(--muted)}.editor-layout{display:grid;grid-template-columns:280px 1fr 320px;grid-template-rows:1fr;gap:12px;flex:1;min-height:0}.editor-center{min-width:0;overflow:hidden;display:flex;flex-direction:column;gap:8px}.panel{background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:12px;overflow:auto}.step-list-item{padding:8px;border-radius:6px;cursor:pointer}.step-list-item:hover{background:var(--panel-2)}.step-list-item.active{background:var(--accent-2);color:#fff}.step-list-item.corrective{border-left:2px solid var(--muted)}.step-list-item.draggable,.card.draggable{cursor:grab}.step-list-item.draggable:active,.card.draggable:active{cursor:grabbing}.step-list-item.drag-over,.card.drag-over{outline:2px dashed var(--accent);outline-offset:-2px}.drag-handle{opacity:.5;font-size:12px}.region-list-item{padding:6px 8px;border-radius:6px;font-size:13px;cursor:pointer}.region-list-item.active{background:var(--accent-2);color:#fff}.canvas-wrap{background:#0b1220;border:1px solid var(--border);border-radius:8px;position:relative;overflow:hidden;display:flex;align-items:center;justify-content:center;flex:1;min-height:0}.canvas-zoom-controls{position:absolute;right:8px;bottom:8px;z-index:20;display:flex;align-items:center;gap:4px;background:#0f172ad9;border:1px solid var(--border);border-radius:6px;padding:4px 6px}.canvas-zoom-controls button{padding:2px 9px;font-size:14px;line-height:1.4}.canvas-zoom-controls span{font-size:12px;color:var(--muted);min-width:38px;text-align:center;font-variant-numeric:tabular-nums}.canvas-debug-log{position:absolute;left:8px;bottom:8px;max-width:min(560px,calc(100% - 16px));max-height:220px;overflow-y:auto;background:#0f172aeb;border:1px solid var(--warn, #f59e0b);border-radius:6px;padding:8px 10px;font-family:ui-monospace,SF Mono,Menlo,monospace;font-size:11px;line-height:1.5;color:#e2e8f0;-webkit-user-select:text;user-select:text;z-index:20}.canvas-debug-log-header{display:flex;justify-content:space-between;align-items:center;font-weight:600;color:#f59e0b;margin-bottom:4px}.canvas-debug-log-header button{padding:2px 8px;font-size:11px}.error-banner{background:var(--danger);color:#fff;padding:8px 12px;border-radius:6px;margin-bottom:12px}.zoom-warning{display:flex;align-items:center;gap:12px;background:#f59e0b26;border:1px solid #f59e0b;color:var(--text);padding:8px 12px;border-radius:6px;margin-bottom:12px;font-size:13px}.zoom-warning button{margin-left:auto;padding:2px 10px;font-size:15px;line-height:1}.pill-warning{display:inline-block;background:#f59e0b26;border:1px solid #f59e0b;color:var(--text);padding:1px 8px;border-radius:999px;font-size:11px;margin-left:8px;vertical-align:middle}.draft-banner{display:flex;align-items:center;gap:12px;flex-wrap:wrap;background:#f59e0b26;border:1px solid #f59e0b;color:var(--text);padding:8px 12px;border-radius:6px;margin-bottom:12px;font-size:13px}.btn-ghost{background:transparent;color:var(--text);border:1px solid transparent}.btn-ghost:hover{background:var(--panel-2)}.btn-ghost.icon{padding:8px 10px}.button-group{display:flex;border:1px solid var(--border);border-radius:7px;overflow:hidden}.button-group button{background:transparent;color:var(--text);border-radius:0}.button-group button:hover{background:var(--panel-2)}.button-group button+button{border-left:1px solid var(--border)}.popover-menu{position:relative}.popover-menu-panel{position:absolute;top:calc(100% + 6px);right:0;z-index:10;background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:6px;min-width:200px;box-shadow:0 12px 28px #0006;display:grid;gap:2px}.popover-menu-panel.align-start{right:auto;left:0}.popover-menu-panel .menu-item{padding:8px 10px;border-radius:5px;font-size:13px;cursor:pointer;color:var(--text);display:flex;align-items:center;gap:8px}.popover-menu-panel .menu-item:hover{background:var(--panel-2)}.popover-menu-panel .menu-divider{height:1px;background:var(--border);margin:4px 2px}.popover-menu-panel label.menu-item{position:relative;overflow:hidden}.popover-menu-panel label.menu-item input[type=file]{position:absolute;top:0;right:0;bottom:0;left:0;opacity:0;cursor:pointer;width:100%}.toolstrip{display:flex;align-items:center;gap:2px;padding:6px;background:var(--panel);border:1px solid var(--border);border-bottom:none;border-radius:8px 8px 0 0;flex-shrink:0}.toolstrip .tool{background:transparent;color:var(--muted);padding:7px 12px;font-size:13px;border-radius:6px}.toolstrip .tool:hover{background:var(--panel-2);color:var(--text)}.toolstrip .tool.active{background:var(--accent-2);color:#fff}.toolstrip .toolstrip-spacer{flex:1}.docked-canvas{flex:1;min-height:0;display:flex;flex-direction:column}.docked-canvas .canvas-wrap{border-radius:0 0 8px 8px;border-top:none}.tts-preview{margin-top:4px;padding:6px 8px;background:var(--bg);border:1px solid var(--border);border-radius:6px;font-size:12px;line-height:1.5}