:root{--font-family-base:Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-size-base:14px;--line-height-base:1.5;--blue:oklch(74.6% .16 232.661);--blue-dark:oklch(54% .18 244);--text-subtle:#475569;--text:#334155;--text-strong:#0f172a;--muted:#64748b;--bg:#fff;--surface:#f8fafc;--surface-muted:#f1f5f9;--surface-elevated:#fff;--border-structure:#80caff;--border:#cef;--border-strong:#cbd5e1;--canvas-grid:#eef2f7;--focus-ring:color-mix(in srgb, var(--blue) 24%, transparent);--scrollbar-color:#ccc transparent;--shadow-sm:0 1px 2px #0f172a0a;--shadow-md:0 4px 12px #0f172a0f;--shadow-lg:0 8px 24px #0f172a14;--shadow:var(--shadow-md);--radius:2px;--radius-sm:var(--radius);--radius-md:calc(var(--radius) * 2);--radius-lg:calc(var(--radius) * 3);--radius-xl:calc(var(--radius) * 4);--radius-pill:999px;font-family:var(--font-family-base);font-size:var(--font-size-base);line-height:var(--line-height-base);color:var(--text);background:var(--bg);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;--wx-font-family:Inter, "Open Sans", Arial, Helvetica, sans-serif}html,body,#app{scrollbar-width:thin;scrollbar-color:var(--scrollbar-color);width:100%;height:100%;margin:0;overflow:hidden}button,input,select,textarea{font:inherit}.app-shell{background:var(--bg);grid-template-rows:56px minmax(0,1fr);width:100%;height:100%;display:grid}.top-menu{border-bottom:1px solid var(--border);background:var(--surface-elevated);box-sizing:border-box;justify-content:space-between;align-items:center;gap:24px;padding:0 18px;display:flex}.brand{color:var(--text-strong);white-space:nowrap;align-items:center;gap:10px;font-size:15px;font-weight:700;display:inline-flex}.top-menu-actions{justify-content:flex-end;align-items:center;gap:10px;min-width:0;display:flex}.sync-status{border:1px solid var(--border);border-radius:var(--radius-pill);background:var(--surface-elevated);min-height:34px;color:var(--muted);white-space:nowrap;box-sizing:border-box;align-items:center;gap:8px;padding:0 12px;font-size:12px;font-weight:700;display:inline-flex}.sync-status[data-phase=syncing]{color:var(--blue-dark);border-color:color-mix(in srgb, var(--blue) 45%, var(--border))}.sync-status[data-phase=error]{color:#b42318;border-color:color-mix(in srgb, #ef4444 38%, var(--border))}.sync-status-dot{border-radius:var(--radius-pill);opacity:.75;background:currentColor;width:8px;height:8px}.sync-status-retry{color:inherit;font:inherit;cursor:pointer;background:0 0;border:none;padding:0;font-weight:800}.sync-status-retry:hover{text-decoration:underline}.user-preferences{position:relative}.user-menu-button{min-width:34px;color:var(--text-strong);border-color:var(--border);background:var(--surface-elevated);padding:0 10px}.user-menu-icon{border-radius:var(--radius-pill);border:2px solid;justify-content:center;align-items:center;width:18px;height:18px;font-size:0;display:inline-flex}.user-preferences-menu{z-index:30;border:1px solid var(--border);border-radius:var(--radius-xl);background:var(--surface-elevated);min-width:190px;box-shadow:var(--shadow-lg);gap:6px;padding:10px;display:grid;position:absolute;top:calc(100% + 10px);right:0}.user-preferences-item{color:var(--text-strong);align-items:center;gap:10px;padding:6px 4px;font-size:13px;font-weight:600;display:flex}.user-preferences-item input{margin:0}.top-menu-button{border-radius:var(--radius-lg);white-space:nowrap;cursor:pointer;border:1px solid #0000;justify-content:center;align-items:center;gap:8px;height:34px;padding:0 12px;font-weight:700;display:inline-flex}.top-menu-button-primary{color:#fff;background:var(--blue-dark);box-shadow:var(--shadow-md)}.top-menu-button.is-loading{min-width:148px}.menu-trigger-button{border-radius:var(--radius-md);width:36px;height:36px;color:var(--text-subtle);cursor:pointer;background:0 0;border:1px solid #0000;padding:0}.menu-trigger-button:hover{border-color:var(--border);background:var(--surface)}.menu-trigger-glyph-vertical{display:inline-flex}.menu-panel-surface{border:1px solid var(--border);border-radius:var(--radius-lg);min-width:220px;box-shadow:var(--shadow-lg);background:#fff;gap:.35rem;padding:.45rem;display:grid}.menu-panel-action{border-radius:var(--radius-md);width:100%;min-height:34px;color:var(--text-strong);text-align:left;font:inherit;cursor:pointer;background:0 0;border:1px solid #0000;padding:0 .7rem}.menu-panel-action:hover{border-color:var(--border);background:var(--surface)}.menu-panel-action:disabled{background:color-mix(in srgb, var(--surface) 72%, white 28%);color:var(--text-subtle);opacity:.48;cursor:not-allowed;border-color:#0000}.menu-panel-action:disabled:hover{background:color-mix(in srgb, var(--surface) 72%, white 28%);border-color:#0000}.menu-panel-action-danger{color:#b42318}.context-tab-menu-trigger{border:1px solid var(--border-strong);border-radius:var(--radius-md);min-width:34px;min-height:34px;color:var(--blue-dark);font:inherit;cursor:pointer;background:#fff;margin:3px 8px}.context-tab-create-menu{min-width:180px}.top-menu-button:disabled{cursor:default;opacity:.45;box-shadow:none}.button-spinner{border-radius:var(--radius-pill);border:2px solid #ffffff47;border-top-color:#fff;width:14px;height:14px;animation:.8s linear infinite button-spin}@keyframes button-spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.workspace{background:var(--bg);min-height:0;overflow:hidden}.canvas-placeholder{background-image:linear-gradient(var(--canvas-grid) 1px, transparent 1px), linear-gradient(90deg, var(--canvas-grid) 1px, transparent 1px);background-size:24px 24px;place-items:center;width:100%;height:100%;display:grid;position:relative;overflow:hidden}.workspace-copy{border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--surface-elevated);width:min(520px,100% - 48px);box-shadow:var(--shadow-lg);text-align:center;padding:28px}.workspace-copy p{color:var(--blue-dark);text-transform:uppercase;margin:0 0 10px;font-size:13px;font-weight:700}.workspace-copy h1{color:var(--text-strong);margin:0 0 10px;font-size:28px;font-weight:750;line-height:1.15}.workspace-copy span{color:var(--muted);font-size:15px;line-height:1.5;display:block}