:root{font:16px system-ui,sans-serif;color:#26332e;background:#f6f4eb}body{max-width:1100px;margin:auto;padding:24px}header{border-bottom:2px solid #426f56}main{padding:16px 0}label{display:block;margin:12px 0}input{font:inherit;padding:10px;border:1px solid #83968a;border-radius:6px;max-width:90%}button{font:inherit;padding:8px 12px;margin:4px;border:1px solid #647e6e;border-radius:6px;background:white;cursor:pointer}button:disabled{opacity:.45;cursor:default}button:hover:not(:disabled){background:#e3f2e7}section{margin:18px 0}.toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px}.columns{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.card{background:white;border:1px solid #d7ddd5;padding:10px;border-radius:8px;margin:8px 0}.card p{margin:3px 0;font-size:.85em}.card button{font-size:.85em}#message{min-height:1.5em;color:#8d3924}footer{color:#65716a;padding:20px 0}@media(max-width:700px){.columns{grid-template-columns:1fr}.toolbar{flex-wrap:wrap}body{padding:14px}}