/* Estilização Geral */
        body {
            background-color: #000a2e;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            margin: 0;
            font-family: Verdana;
        }

        .calculadora {
            background-color: #f2f3f4;
            padding: 20px;
            border-radius: 20px;
            box-shadow: 0px 10px 30px rgba(0, 0, 0, 0.5);
            width: 320px;
        }

        /* Visor */
        #display {
            width: 100%;
            height: 60px;
            background-color: #000a2e;
            border: none;
            border-radius: 10px;
            margin-bottom: 20px;
            text-align: right;
            padding: 10px 15px;
            font-size: 2rem;
            color: #f2f3f4;
            box-sizing: border-box;
            outline: none;
        }

        /* Grade de Botões */
        .botoes {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 10px;
        }

        button {
            height: 60px;
            border-radius: 12px;
            border: none;
            font-size: 1.2rem;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.2s ease;
            background-color: #000;
            color: white;
        }

        button:hover {
            background-color: #444;
            transform: scale(1.05);
        }

        /* Botões Especiais */
        .operador {
            background-color: #ffbb00;
            color: white;
        }

        .operador:hover {
            background-color: #ffaa33;
        }

        .igual {
            background-color: #038738;
            color: #f2f3f4;
            grid-column: span 2;
        }

        .igual:hover {
            background-color: #50b779;
        }

        .limpar {
            background-color: #f74304;
            grid-column: span 2;
        }

        .limpar:hover {
            background-color: #f06f40;
        }