:root{--bg:#f6f4ed;--fg:#1d2630;--card:#fff;--line:#d9d4c5;--acc:#091924;--err:#a32020}
@media (prefers-color-scheme:dark){:root{--bg:#10171d;--fg:#e9e6dc;--card:#18222b;--line:#2b3946;--acc:#bc8f1e;--err:#ff8a8a}}
*{box-sizing:border-box}
body{margin:0;min-height:100vh;display:grid;place-items:center;background:var(--bg);color:var(--fg);font:16px/1.5 system-ui,sans-serif;padding:16px}
.caja{width:100%;max-width:380px;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:24px}
.caja.ancha{max-width:720px}
h1{font-size:1.3rem;margin:0 0 12px}
h2{font-size:1.1rem}
label{display:block;margin:12px 0;font-size:.9rem}
input{width:100%;margin-top:4px;padding:10px;border:1px solid var(--line);border-radius:8px;background:transparent;color:inherit;font:inherit}
button{margin-top:8px;padding:10px 16px;border:0;border-radius:8px;background:var(--acc);color:#fff;font:inherit;cursor:pointer}
@media (prefers-color-scheme:dark){button{color:#10171d}}
.msg{color:var(--err);min-height:1.4em;font-size:.9rem}
.aviso{background:#fff3cd;color:#5a4300;border:1px solid #e6c866;border-radius:8px;padding:8px 12px;margin-bottom:12px;font-size:.9rem}
.aviso a{color:inherit;font-weight:600}
table{width:100%;border-collapse:collapse;font-size:.85rem;margin:8px 0}
th,td{text-align:left;padding:6px 8px;border-bottom:1px solid var(--line);vertical-align:top}
.caja.muyancha{max-width:1100px}
button.sec{background:transparent;color:inherit;border:1px solid var(--line)}
.barra{display:flex;justify-content:space-between;align-items:center}
.qr{text-align:center}
.qr img{background:#fff;padding:8px;border-radius:8px}
code{word-break:break-all;font-size:.95rem}
pre{background:var(--bg);border:1px solid var(--line);border-radius:8px;padding:12px;font-size:.95rem}