Design Fully Responsive "IRONFIT" Gym Website

Create a premium, modern, fully responsive gym website named **IRONFIT**. - Design: Premium black and dark background with bold red accents, stylish typography, smooth animations, and a professional fitness aesthetic. - Homepage: Large hero section with gym background, “BUILD YOUR BEST BODY” heading, Join Now button, and fitness statistics. - About Us: Gym introduction, modern equipment, professional trainers, and fitness benefits. - Programs: Strength training, muscle building, weight loss, HIIT, cardio, and boxing. - Trainers: Professional trainer profiles with photos, names, and specializations. - BMI Calculator: Working calculator that accepts height and weight and displays BMI results. - Membership Plans: Basic, Pro, and Elite pricing cards in Indian rupees, with functional Join Now buttons. - Testimonials: Customer reviews with a working slider. - Gallery: Attractive gym and workout photos. - FAQ: Expandable questions and answers. - Contact: Contact form with name, email, phone number, fitness goal, and message. - Navigation: Responsive navigation bar with a working mobile menu. - Footer: Quick links, contact details, and opening hours. - Functionality: Working JavaScript interactions, form validation, smooth scrolling, and responsive layout for mobile, tablet, and desktop. - Files: Provide clean, complete, ready-to-use `index.html`, `style.css`, and `script.js` files. All three files must work together without errors. - Important: Do not display code fragments, extra text, or incorrect branding on the website. The correct brand name is **IRONFIT**. - Make the website visually impressive, fast-loading, easy to use, and ready to run in VS Code with Live Server.