Accessibility Statement

Accessibility Statement

SphereVolumeFormula.com is committed to ensuring that digital mathematical education is accessible to everyone, including students, educators, and technical practitioners with disabilities, visual impairments, motor limitations, or cognitive differences.

1. Concrete Accessibility Measures Implemented

We have built our website using lightweight, modern semantic web standards and integrated specific accessible features:

A. Keyboard Navigation & Visible Focus

• Full Keyboard Operability: All navigation menus, dropdowns, form inputs, calculator controls, accordion FAQs, and hyperlinks can be operated using standard keyboard keystrokes (Tab, Shift + Tab, Enter, Space, and arrow keys).
• Prominent Focus Indicators: Interactive elements display high-contrast green focus rings (outline: 2px solid #15803D; outline-offset: 2px;) when navigated via keyboard, ensuring users can clearly track their position on the page.
• Skip to Content Link: A dedicated "Skip to main content" link is located at the top of every page to allow keyboard and screen-reader users to bypass the primary navigation bar.

B. High-Contrast Green & White Design Palette

• Strong Text Contrast: We use dark slate text (#1F2937) on pure white (#FFFFFF) and soft green (#F0FDF4) backgrounds, providing contrast ratios well above the WCAG AA minimum threshold of 4.5:1 for normal body text and 3:1 for large headings.
• Distinguishable Interactive Links: Hyperlinks feature distinct styling and hover/focus transitions to ensure they are visually identifiable without relying solely on color.

C. Mobile Touch Targets & Spacing

• Large Touch Controls: All interactive buttons, calculator calculate triggers, mode switcher buttons, and dropdown select fields are engineered with a minimum touch target size of at least 44 × 44 CSS pixels.
• Accidental Tap Prevention: Generous spacing is maintained between adjacent links, buttons, and navigation pills to prevent accidental taps on touchscreen devices.
• No Horizontal Overflow: Our layouts are fully responsive, preventing horizontal scrolling and content truncation across mobile phones, tablets, and desktop displays.

D. Semantic HTML & Screen Reader Compatibility

• Logical Heading Hierarchy: Every page features a single unique <h1> followed by structured <h2> and <h3> subheadings to enable screen-reader users to skim content via heading navigation.
• Explicit Form Labels: Calculator inputs, measurement unit selectors, and contact form fields have explicit <label for="..."> associations, ensuring screen readers announce the required measurement clearly.
• Descriptive Alt Text: Geometric diagrams and visual illustrations include descriptive alternative text explaining the spatial shape and variable dimensions.

E. Calculator Screen Reader Usability

• Calculated results are announced with clear text labels and unit tags (e.g., 113.10 cm³).
• Step-by-step mathematical breakdown boxes present formulas in plain, structured text that assistive technology can interpret sequentially.

F. Respect for User System Preferences

• Reduced Motion: We respect the prefers-reduced-motion media query by disabling decorative transitions and animations for users sensitive to motion.
• Browser Zoom & Text Scaling: Our pages scale gracefully up to 200% zoom without breaking functionality, overlapping text, or causing horizontal layout failure.

2. Known Limitations & Ongoing Work

While we strive for comprehensive accessibility, some complex mathematical materials present ongoing challenges:

• 3D SVG Projections: Interactive 3D SVG sphere wireframe previews provide a visual aid for sighted learners. We provide equivalent textual dimension readouts and step breakdowns for non-sighted users.
• Historical Mathematical Proofs: Some complex multi-step calculus integration proofs involve mathematical fractions. We are actively expanding semantic MathML and descriptive text equivalents for these equations.

3. Compatibility with Browsers & Assistive Tech

SphereVolumeFormula.com is designed to be compatible with:

• Modern desktop and mobile browsers: Google Chrome, Mozilla Firefox, Apple Safari, Microsoft Edge.
• Popular screen readers: NVDA, JAWS on Windows, VoiceOver on macOS/iOS, and TalkBack on Android.

4. Feedback & Accessibility Assistance

We welcome feedback on the accessibility of SphereVolumeFormula.com. If you encounter any accessibility barrier or have difficulty using any calculator or guide:

• Contact Form: Please visit our Contact Us page and choose "Accessibility Barrier" as the inquiry category.
• Email: Send a direct message to contact@spherevolumeformula.com with the subject line "Accessibility Feedback".

Please specify the webpage URL, the device/assistive technology you were using, and the nature of the issue. We review all accessibility reports promptly to implement necessary code improvements.