/* Reset y tipografía */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f4f6f8;
    margin: 20px;
    color: #333;
}

/* Encabezado */
h2 {
    text-align: center;
    color: #2c3e50;
}

/* Formulario */
form {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
}

input[type="file"] {
    padding: 5px;
    border-radius: 5px;
    border: 1px solid #ccc;
}

button {
    padding: 8px 16px;
    background-color: #4caf50;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
    transition: background 0.3s;
}

button:hover {
    background-color: #45a049;
}

/* Barra de progreso */
#progreso {
    display: none;
    margin-bottom: 20px;
    text-align: center;
}

#contador {
    font-weight: bold;
    margin-bottom: 5px;
}

.barra {
    width: 80%;
    height: 20px;
    background: #ddd;
    margin: 0 auto;
    border-radius: 10px;
    overflow: hidden;
    position: relative;
}

.relleno {
    width: 100%;
    height: 100%;
    background: #4caf50;
    animation: progreso 2s linear infinite;
}

@keyframes progreso {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* Tabla */
table {
    width: 90%;
    margin: 0 auto 20px;
    border-collapse: collapse;
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

th, td {
    padding: 12px 15px;
    text-align: left;
}

th {
    background-color: #4caf50;
    color: white;
    font-weight: bold;
}

tr:nth-child(even) {
    background-color: #f9f9f9;
}

tr:hover {
    background-color: #f1f7f9;
}

/* Links */
a {
    color: #2196f3;
    text-decoration: none;
    font-weight: bold;
}

a:hover {
    text-decoration: underline;
}

/* menu */

 header {
      background: #4caf50;
      color: #fff;
      padding: 15px;
      text-align: center;
    }

    nav {
      display: flex;
      justify-content: center;
      background: #333;
      flex-wrap: wrap;
    }

    nav a {
      color: #fff;
      text-decoration: none;
      padding: 14px 20px;
      display: block;
      transition: background 0.3s;
    }

    nav a:hover {
      background: #4caf50;
    }

    .container {
      padding: 20px;
      text-align: center;
    }

    /* Estilos responsivos */
    @media (max-width: 600px) {
      nav {
        flex-direction: column;
        text-align: center;
      }
    }
	
	
	.validacion-sat {
	  font-size: 12px;   /* letras más pequeñas */
	  color: #555;       /* opcional: un gris para diferenciar */
	  font-style: italic; /* opcional: cursiva */
	}
	
	/* Contenedor centrado */
	.exportar-container {
		margin-top: 20px;
		text-align: center; /* Centra el botón */
	}

	/* Botón verde estilo "Excel" */
	.btn-exportar {
		display: inline-block;
		padding: 10px 20px;
		background-color: #4caf50; /* verde principal */
		color: #fff;
		border-radius: 5px;
		font-weight: bold;
		text-decoration: none;
		transition: background 0.3s;
	}

	.btn-exportar:hover {
		background-color: #45a049; /* verde más oscuro al pasar el mouse */
	}