:root{--bg:#0f1115;--panel:#171a21;--border:#262b36;--text:#e6e8ec;--muted:#9aa3b2;--accent:#7c5cff;--accent-2:#00c2a8}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.container{max-width:920px;margin:0 auto;padding:24px}.nav{display:flex;gap:18px;align-items:center;padding:14px 24px;border-bottom:1px solid var(--border);background:var(--panel)}.nav .brand{font-weight:700;color:var(--text);margin-right:8px}.nav a{color:var(--muted);font-size:14px}.nav a:hover{color:var(--text);text-decoration:none}.card{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:20px;margin-bottom:16px}h1{font-size:22px;margin:0 0 4px}.subtitle{margin:0 0 20px}.subtitle,label{color:var(--muted)}label{display:block;font-size:13px;margin-bottom:6px}input[type=text],textarea{width:100%;background:#0c0e12;border:1px solid var(--border);border-radius:8px;color:var(--text);padding:10px 12px;font-size:14px;font-family:inherit}textarea{min-height:180px;resize:vertical}button{background:var(--accent);color:white;border:none;border-radius:8px;padding:10px 16px;font-size:14px;font-weight:600;cursor:pointer}button:disabled{opacity:.5;cursor:not-allowed}.tag{display:inline-block;background:#20242e;border:1px solid var(--border);border-radius:999px;padding:2px 10px;font-size:12px;margin:2px 4px 2px 0}.muted,.tag{color:var(--muted)}.error{color:#ff6b6b}.success{color:var(--accent-2)}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));grid-gap:12px;gap:12px}.notas-layout{display:grid;grid-template-columns:320px 1fr;grid-gap:16px;gap:16px;align-items:start}.nota-item:hover{background:#20242e!important}@media (max-width:720px){.notas-layout{grid-template-columns:1fr}}.answer{line-height:1.6}.answer>:first-child{margin-top:0}.answer>:last-child{margin-bottom:0}.answer h1,.answer h2,.answer h3{font-size:16px;margin:16px 0 6px}.answer ol,.answer ul{padding-left:22px;margin:8px 0}.answer li{margin:4px 0}.answer strong{color:#fff}.answer code{background:#0c0e12;border:1px solid var(--border);border-radius:4px;padding:1px 5px;font-size:13px}.answer pre{background:#0c0e12;border:1px solid var(--border);border-radius:8px;padding:12px;overflow-x:auto}.answer a{color:var(--accent)}