body {
            margin: 0;
            padding: 0;
            background: #ff8c00;
            font-family: Arial, Helvetica, sans-serif;
            /* Para acomodar contenido en columna */
            display: flex;
            flex-direction: column;
            /* Ocupar toda la pantalla */
            min-height: 100vh;
            /* Para centrar solo el contenido, no el footer */
            align-items: center;
        }
        .container {
            margin: auto 0; /* Esto la centra verticalmente */
            align-self: center; /* Esto la centra horizontalmente */
            width: 90%;
            max-width: 420px;
            background: white;
            padding: 35px 30px;
            border-radius: 20px;
            box-shadow: 0 8px 25px rgba(0,0,0,0.25);
            text-align: center;
            animation: fadeIn 0.6s ease-out;
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(15px); }
            to { opacity: 1; transform: translateY(0); }
        }
        h2 {
            margin-bottom: 25px;
            font-size: 26px;
            color: #333;
        }
        .btn {
            display: block;
            padding: 15px;
            margin: 12px 0;
            font-size: 20px;
            text-decoration: none;
            background: #007bff;
            color: white;
            border-radius: 10px;
            transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.3s;
        }
        .btn:hover {
            transform: scale(1.06);
            box-shadow: 0 6px 16px rgba(0,0,0,0.3);
            background: #005ed1;
        }
        .footer {
            display:flex;
            justify-content:space-between;
            gap:8px;
            align-items:center;
        }
        .autor-footer {
            margin-top: auto; /* 🔥 Esto lo pega abajo */
            text-align: center;
            width: 100%;
            padding: 6px 0;
            font-size: 11px;
            opacity: 0.2;
            color: #000;
            user-select: none;
        }
        .autor-footer:hover {
            opacity: 0.50; /* un poquito más visible al pasar el mouse */
        }
        /* ✨ Footer NO SE IMPRIME ✨ */
        @media print {
            .autor-footer {
                display: none !important;
            }
        }