mellow-complete

byBusiness

Build a complete, production-ready SEO Spintax Generator SaaS application with a gorgeous 3D dark-mode UI (glassmorphism, vibrant gradients, glowing card depth, and smooth shadows): 1. Authentication & Access Control: - Allow users to sign up using email and password. - Strictly restrict sign-ups to @gmail.com email addresses only (block any non-gmail domains instantly with a clear error message). - Keep authentication frictionless (no email verification/OTP required, users can log in immediately after signup). 1. Updated Pricing Tiers & Exact Limits: - Free Plan ($0): 10 article credits, max 500 words per article. - Pro Plan ($20/mo): 300 article credits per day, 700 to 1,000 words max per article, up to 5 unique variations per run (1 credit per unique variation). - Big Plan ($35/mo): 500 article credits per day, 1,000 to 1,500 words max per article, up to 5 unique variations per run. - Agency Plan ($60/mo): 1,000 article credits per day, max 2,500 words per article, up to 5 unique variations per run, bulk multi-variation engine, advanced bulk export (TXT/CSV), priority processing queue, and unlimited keyword/URL pairs. 3. Core Spintax Tool Engine & Features: - Spintax Template input textarea with fast iterative parsing and brace-balance validation (preventing false "missing closing brace" errors). - Keyword & URL pair management allowing users to add multiple pairs, choose target paragraphs (Para 1 to 5) for each link, and select anchor placement strategy (Random, Top, Center, Bottom). - Number of Unique Variations selector (1 to 5 variations). Selecting 5 variations generates 5 unique variations simultaneously. - Spam phrase filter toggle to remove repetitive marketing terms. - Multi-format output tabs: RENDERED TEXT (with styled anchor links and light reading mode), HTML CODE, BBCODE, and PLAIN TEXT, plus a "Copy All Outputs" button. 4. Database & Lemon Squeezy Integration: - Setup Supabase backend tables for user management and daily/monthly credit tracking. - Restrict sign-ups to @gmail.com domains only, with no email verification friction. - Integrate Lemon Squeezy payment buttons and webhooks for Pro ($20), Big ($35), and Agency ($60) plans so successful payments automatically update user tiers and refill credits. - Ensure unique variations correctly deduct credits (e.g., 5 unique variations deducts 5 credits). Please upgrade the authentication and security system to implement strict email verification and domain validation: 5. Strict Email & Domain Validation: - Block any fake, random, or temporary disposable email addresses (e.g., whdgha@gmail.com style gibberish or non-existent domains). - Strictly enforce valid @gmail.com or verified corporate domain rules, and add a backend verification check to ensure the email format is completely genuine. 6. Email Verification OTP Flow: - When a user signs up, do not grant immediate dashboard/tool access. Instead, display a "Verify Your Email" screen. - Automatically generate a secure 6-digit OTP code and simulate sending it to the user's email address (or trigger a backend email service if configured). - The user must enter the exact 6-digit code to activate their account. Until verification is successful, access to the Spintax Studio tool, pricing, and generation features remains locked. 7. Please update the branding and title across the entire application to "Spintaxify" and the domain reference to "Spintaxify.com": - Update all header logos, meta titles, navigation bars, email verification notices, and footer branding from "SpintaxStudio" (or previous names) to "Spintaxify". - Ensure all app references, UI headings, and branding elements consistently display Spintaxify. Please optimize the Spintax generation engine for maximum speed and 100% human-sounding output: 8. Instant Execution Speed: - Remove any artificial delays, slow loading spinners, or multi-step processing pauses in the spintax parsing engine. Spintax variations must generate instantly (under 0.1 seconds) even for maximum word counts. 9. Pure Human-Like Content Structure: - Ensure the spintax templates and generated variations read naturally like human-written content, completely avoiding robotic phrasing, repetitive AI buzzwords, and unnatural sentence flows. - Keep the anchor placement precise and contextually smooth within the selected paragraph.