Clean minimal editorial vector illustration designed as a simple travel preparation infographic background with three large separate horizontal panels, each panel showing only a clear icon and ample whitespace: calendar icon for 30 days, document folder icon for one week, carry-on luggage icon for departure day, warm off-white background, muted deep blue and soft teal accents, premium modern travel magazine aesthetic, mobile legible icons, absolutely no text, no lettering, no numbers, no watermarks