body {
            font-family: Arial, sans-serif;
            background: #f3f4f6;
            color: #1f2937;
            margin: 0;
            padding: 30px 16px;
        }

        main {
            max-width: 1050px;
            margin: auto;
            padding: 24px;
            background: white;
            border-radius: 12px;
        }

        h1 {
            margin-top: 0;
        }

        .tabla {
            overflow-x: auto;
            margin: 16px 0;
        }

        table {
            width: 100%;
            border-collapse: collapse;
        }

        th, td {
            padding: 12px;
            text-align: left;
            border-bottom: 1px solid #e5e7eb;
        }

        th {
            background: #f9fafb;
        }

        input {
            box-sizing: border-box;
            width: 100%;
            min-width: 170px;
            padding: 10px;
            border: 1px solid #cbd5e1;
            border-radius: 6px;
        }

        button {
            padding: 10px 14px;
            border: 0;
            border-radius: 6px;
            background: #2563eb;
            color: white;
            cursor: pointer;
        }

        button.secundario {
            background: #475569;
        }

        button.eliminar {
            background: #b91c1c;
        }

        button:disabled {
            opacity: 0.5;
            cursor: default;
        }

        .acciones {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .correcto {
            color: #15803d;
        }

        .error {
            color: #b91c1c;
        }

        .aviso {
            color: #92400e;
        }

        .resultado {
            min-width: 200px;
        }

        hr {
            margin: 30px 0;
            border: 0;
            border-top: 1px solid #e5e7eb;
        }