body{font-family:Arial, sans-serif;margin:0;background:#f4f6f9;color:#1f2937}nav{background:#1f2937;color:white;padding:14px 24px;display:flex;gap:22px;align-items:center}nav a{color:white;text-decoration:none}main{padding:24px}h1{margin-top:0}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:20px}.cards div,.form-card{background:white;border-radius:10px;padding:18px;box-shadow:0 1px 5px #0001}.cards span{display:block;color:#6b7280}.cards strong{font-size:26px}table{width:100%;border-collapse:collapse;background:white;border-radius:10px;overflow:hidden;box-shadow:0 1px 5px #0001}th,td{padding:11px 12px;border-bottom:1px solid #e5e7eb;text-align:left;font-size:14px}th{background:#111827;color:white}.alerta{background:#fff1f2}.form-card{display:grid;grid-template-columns:repeat(6,1fr);gap:12px;margin-bottom:20px}.form-card input{width:100%;padding:9px;border:1px solid #d1d5db;border-radius:6px}.form-card button,td button{background:#2563eb;color:white;border:0;border-radius:6px;padding:10px 14px;cursor:pointer}.check{display:flex;gap:8px;align-items:center}.check input{width:auto}@media(max-width:900px){.cards,.form-card{grid-template-columns:1fr}table{font-size:12px}}