body{margin:0;font-family:system-ui,sans-serif;background:#f5f5f5;color:#222}#root{max-width:640px;margin:0 auto;padding:24px 16px 64px}form{display:flex;flex-direction:column;gap:8px;max-width:360px}header{display:flex;align-items:center;justify-content:space-between}nav{display:flex;gap:8px;margin:16px 0}nav button.active{background:#1a73e8;border-color:#1a73e8;color:#fff}.user-info{display:flex;align-items:center;gap:8px}.user-info span{font-size:13px;color:#666}input{padding:8px 10px;border:1px solid #ccc;border-radius:6px;font-size:14px}button{padding:8px 12px;border:1px solid #ccc;border-radius:6px;background:#fff;cursor:pointer;font-size:14px}button:hover{background:#f0f0f0}.item-form,.share-form{flex-direction:row;align-items:center}.item-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px}.item-list li{background:#fff;border:1px solid #ddd;border-radius:8px;padding:12px;display:flex;flex-direction:column;gap:8px}.error{color:#c0392b}.shared-with{display:flex;align-items:center;flex-wrap:wrap;gap:4px;margin:0;font-size:13px;color:#555}.share-chip{background:#eef2ff;border-radius:999px;padding:2px 8px;font-size:12px;color:#333}