:root{--primary-color: #3b82f6;--secondary-color: #fca5a5;--bg-color: #f8fafc;--panel-bg: rgba(255, 255, 255, .7);--text-main: #1e293b;--text-light: #64748b;--border-color: #e2e8f0;--font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif}@media (prefers-color-scheme: dark){:root{--bg-color: #0f172a;--panel-bg: rgba(30, 41, 59, .7);--text-main: #f8fafc;--text-light: #94a3b8;--border-color: #334155}}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);background-color:var(--bg-color);color:var(--text-main);height:100vh;overflow:hidden}.app-container{display:flex;flex-direction:column;height:100vh;width:100vw}.glass-panel{background:var(--panel-bg);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--border-color);box-shadow:0 4px 6px -1px #0000001a,0 2px 4px -1px #0000000f}.header{padding:1rem 2rem;z-index:10;display:flex;align-items:center}.header h1{font-size:1.5rem;font-weight:600;background:linear-gradient(135deg,var(--primary-color),var(--secondary-color));-webkit-background-clip:text;-webkit-text-fill-color:transparent}.main-content{display:flex;flex:1;overflow:hidden}.toolbar{position:absolute;top:50%;left:1.5rem;transform:translateY(-50%);display:flex;flex-direction:column;gap:.75rem;padding:1rem .75rem;z-index:20;border-radius:12px}.tool-settings{position:absolute;top:1.5rem;right:1.5rem;width:320px;max-height:calc(100vh - 3rem);padding:1.5rem;z-index:20;border-radius:12px;overflow-y:auto}.toolbar-btn{display:flex;align-items:center;justify-content:center;width:48px;height:48px;border-radius:10px;border:1px solid transparent;background:transparent;color:var(--text-main);cursor:pointer;transition:all .2s;position:relative}.toolbar-btn:hover{background:#3b82f61a;color:var(--primary-color)}.toolbar-btn.active{background:var(--primary-color);color:#fff;box-shadow:0 4px 12px #3b82f666}.toolbar-divider{height:1px;background:var(--border-color);margin:.5rem 0}.settings-group{display:flex;flex-direction:column;gap:.75rem}.tool-grid{display:grid;grid-template-columns:1fr 1fr;gap:.5rem;margin-bottom:.5rem}.section-header{display:flex;align-items:center;gap:.5rem;font-size:1.1rem;margin-bottom:1rem;color:var(--text-main);font-weight:600}.section-header svg{color:var(--primary-color)}.btn{padding:.75rem 1rem;background:#ffffff80;border:1px solid var(--border-color);border-radius:6px;cursor:pointer;font-size:.9rem;font-weight:500;color:var(--text-main);transition:all .2s ease;text-align:left}.btn:disabled{cursor:not-allowed;opacity:.55}.btn-primary{background:var(--primary-color);border-color:var(--primary-color);color:#fff;display:inline-flex;align-items:center;justify-content:center;gap:.4rem}.icon-btn,.icon-text-btn{border:1px solid var(--border-color);background:#fff9;color:var(--text-main);cursor:pointer;display:inline-flex;align-items:center;justify-content:center}.icon-btn{width:32px;height:32px;border-radius:6px}.icon-text-btn{min-height:32px;padding:0 .65rem;gap:.35rem;border-radius:6px;font-weight:600}.link-btn{background:transparent;border:none;color:var(--primary-color);cursor:pointer;font:inherit;font-weight:600}.auth-status{position:absolute;top:16px;right:16px;z-index:50;min-height:48px;padding:.5rem .75rem;border-radius:8px;display:flex;align-items:center;gap:.6rem;font-size:.9rem;font-weight:600}.auth-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:200;display:flex;align-items:center;justify-content:center;background:#0f172a59;padding:1rem}.auth-modal{width:min(420px,100%);padding:1.25rem;border-radius:8px;background:#fffffff5;display:flex;flex-direction:column;gap:.9rem}.auth-modal-header{display:flex;align-items:center;justify-content:space-between;font-size:1.1rem}.auth-modal label{display:flex;flex-direction:column;gap:.3rem;color:var(--text-light);font-size:.85rem}.auth-modal input{padding:.65rem;border:1px solid var(--border-color);border-radius:6px;color:var(--text-main);background:var(--bg-color);font:inherit}.form-error,.project-message{border:1px solid #fecaca;background:#fff1f2;color:#b91c1c;border-radius:6px;padding:.5rem;font-size:.82rem}.project-menu-btn{display:flex;align-items:center;gap:8px;border:none;cursor:pointer;background:#ffffffb3;padding:10px 16px;border-radius:8px;color:#334155;font-weight:600;font-size:.9rem}.project-dropdown{position:absolute;top:120%;left:0;width:360px;display:flex;flex-direction:column;gap:.7rem;z-index:100;padding:.85rem;background:#fffffff5;border-radius:8px}.project-actions{display:grid;grid-template-columns:1fr 1fr;gap:.5rem}.guest-note{display:flex;flex-direction:column;gap:.6rem;color:var(--text-light);font-size:.85rem;line-height:1.35;background:#eff6ff;border:1px solid #bfdbfe;border-radius:8px;padding:.75rem}.guest-note.inline{margin-bottom:.25rem}.project-section-title{font-size:.75rem;font-weight:700;color:var(--text-light);text-transform:uppercase;padding-left:.25rem}.project-list{max-height:260px;overflow-y:auto;display:flex;flex-direction:column;gap:.4rem}.project-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:.5rem;align-items:center;padding:.5rem;background:#f8fafc;border:1px solid #e2e8f0;border-radius:6px;cursor:pointer}.project-row>span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:.9rem;font-weight:600}.project-row-actions{display:flex;align-items:center;gap:.25rem}.project-row-actions button{min-width:28px;height:28px;border:none;border-radius:6px;background:transparent;color:var(--text-light);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;font-size:.72rem;font-weight:700}.project-row-actions button:hover{background:#e2e8f0;color:var(--text-main)}.empty-state{color:var(--text-light);font-size:.85rem;padding:.4rem}.btn-danger{padding:.5rem;background:transparent;border:1px solid #ef4444;color:#ef4444;border-radius:6px;cursor:pointer;transition:all .2s;display:flex;align-items:center;justify-content:center;gap:.4rem}.btn-danger:hover{background:#ef4444;color:#fff}.settings-group label{display:flex;flex-direction:column;font-size:.85rem;color:var(--text-light);gap:.25rem}.settings-group input,.settings-group select{padding:.5rem;border:1px solid var(--border-color);border-radius:4px;background:var(--bg-color);color:var(--text-main);font-family:inherit}.hint{font-size:.75rem;color:var(--text-light);margin-top:1rem;text-align:center}.logo-container{position:relative;display:flex;align-items:center;gap:.75rem;padding:.75rem 1.25rem;z-index:20;border-radius:12px}.logo-icon{color:var(--primary-color)}.logo-text{font-weight:600;font-size:1.1rem;background:linear-gradient(135deg,var(--primary-color),var(--secondary-color));-webkit-background-clip:text;-webkit-text-fill-color:transparent}.canvas-area{flex:1;position:relative;background-color:var(--bg-color);background-image:radial-gradient(var(--border-color) 1px,transparent 1px);background-size:20px 20px;display:flex;align-items:center;justify-content:center;overflow:hidden}