SAP Fiori – meaning ‘flowers’ in Italian – represents SAP’s intent to deliver consumer-grade user experience to our most broadly and frequently used business transactions. Delivered with a fresh and modern user interface, SAP Fiori apps adhere to a consistent and responsive design that allows users to seamlessly experience the apps across various interaction channels – desktop, tablet, and mobile. The apps follow a simple and intuitive interaction pattern that enables users to accomplish their tasks quickly and effortlessly.Good too know, that all innovative features will mostly be influenced by SAP Fiori Apps and sometimes will find their way into the core of the SAPUI5 and also into OPENUI5.
If you are looking for additional information concerning a good design guide than have a look at the
SAP Fiori Design Guidelines
This is a great place to be influenced by a state-of-the-art-mobile-first web experience.
You will find a deep look into the internally used design patterns and how they should be used.
There is a special section called Prototyping Kit where you can download a Microsoft Power Point file containing all the used patterns for creating UIMockUps. Everything is editable inside PowerPoint. If you additionally install the SAP-Icon-Font "SAP-icons.ttf" located in the UI5SDK "resources/sap/ui/core/themes/base/fonts" you can also customize the icons.
Maybe you will also be a little bit inspired by this nicely designed guidelines.