body {
            font-family: 'Roboto', sans-serif;
            background-color: #f4f4f4;
            /* Fundo com imagem temática opcional ou padrão geométrico */
            background-image: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)), url('https://images.unsplash.com/photo-1541888946425-d81bb19240f5?auto=format&fit=crop&w=1350&q=80');
            background-size: cover;
            background-position: center;
            height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .login-card {
            background: rgba(255, 255, 255, 0.95);
            border-radius: 8px;
            border-top: 6px solid #ff6600; /* Laranja Construção */
            box-shadow: 0 10px 30px rgba(0,0,0,0.3);
            width: 100%;
            max-width: 400px;
            padding: 2rem;
        }

        .btn-construction {
            background-color: #ff6600;
            border: none;
            color: white;
            font-weight: bold;
            text-transform: uppercase;
            transition: 0.3s;
        }

        .btn-construction:hover {
            background-color: #e65c00;
            color: white;
        }

        #downloadSection {
            display: none; /* Escondido inicialmente */
            text-align: center;
        }

        .status-icon {
            font-size: 3rem;
            color: #28a745;
            margin-bottom: 1rem;
        }