:root {
  color-scheme: light dark;
  --borde: #8884;
  --ok: #1a7f37;
  --error: #cf222e;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  line-height: 1.4;
}

body { max-width: 1100px; margin: 0 auto; padding: 0 16px 48px; }
header { display: flex; align-items: center; gap: 12px; border-bottom: 1px solid var(--borde); }
header h1 { font-size: 1.3rem; margin-right: auto; }
h2 { font-size: 1.1rem; margin-top: 32px; }

#aviso { min-height: 1.4em; }
#aviso.ok { color: var(--ok); }
#aviso.error { color: var(--error); font-weight: 600; }

table { width: 100%; border-collapse: collapse; margin-top: 8px; }
th, td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--borde); vertical-align: top; }
td button { margin: 0 4px 4px 0; }

.pasos { padding-left: 20px; }
form { display: grid; gap: 12px; max-width: 640px; }
fieldset { border: 1px solid var(--borde); border-radius: 6px; display: grid; gap: 8px; }
label { display: grid; gap: 2px; }
label.casilla { display: flex; gap: 6px; align-items: center; }
small { opacity: 0.75; }
input, select, textarea, button { font: inherit; padding: 4px 6px; }
button[type="submit"] { justify-self: start; }