Build a high-fidelity, dark-themed React web application called "Ideas Vault". This app acts as a secure repository where users store startup ideas, and an "AI Agent" (simulated) passively researches them to provide market validation, competitor analysis, and readiness scores.

Tech Stack:

• React (Functional Components, Hooks)
• Tailwind CSS (Styling, Animations)
• Lucide React (Icons)
• Recharts (Data Visualization)
• Font: Inter (Google Fonts)

Design System:

• Background: Deep Slate/Navy (#0f172a to #1e293b).
• Text: Slate-200 for body, White for headings.
• Accents: Indigo/Violet gradients for primary actions.
• Status Colors: Emerald (Success/Ready), Amber (Warning/Processing).
• Aesthetics: Modern SaaS, rounded corners (rounded-xl or 2xl), subtle borders (border-slate-700), glassmorphism effects on modals/overlays.

Core Features & Views:

1. Landing Page:
   • A marketing-style hero section.
   • Headline: "Your startup ideas, researched on autopilot."
   • "Open Your Vault" button that transitions to the main app state.
   • Background elements: Subtle glowing orbs or gradients.
2. App Layout:
   • Sidebar: Fixed left navigation (hidden on mobile, hamburger menu to toggle).
     • Links: Vault (Dashboard), Weekly Digest, Board (Team), Settings.
     • Bottom: Log Out.
   • Mobile Nav: Bottom fixed bar for small screens.
3. Dashboard (The Vault):
   • Grid layout of "Idea Cards".
   • Idea Card:
     • Title & Short Description (truncated).
     • Tags (e.g., #SaaS, #FinTech).
     • Status Badge: "Ready" (Green) or "Agents Analyzing..." (Amber pulse animation).
     • Icon indicating input type (Text, Voice, or Image).
   • Add Button: prominent button to open the Capture Modal.
4. Capture Modal:
   • A centered modal with a backdrop blur.
   • Tabs: Text, Voice Note, Snapshot.
   • Inputs: Title (text), Description (textarea).
   • Simulation:
     • For Voice: A fake "listening" animation when the mic is clicked.
     • For Image: A drag-and-drop zone placeholder.
   • Action: "Send to Vault" button. When clicked, simulate a network request (2-second delay) then add the idea to the Dashboard list with a "Ready" status and generated mock data.
5. Idea Detail View:
   • Opened when clicking a card.
   • Header: Title, Status Badge, Back button, Share/Download icons.
   • Concept Section: Full description and tags.
   • Readiness Score: A large, prominent number display (0-100) styled cleanly (no circular charts).
   • Key Metrics (Grid):
     • TAM (Total Addressable Market) e.g., "$1.2B".
     • Primary Target Audience.
     • Top Competitor Name & Strength.
     • Key Market Trend.
   • Growth Chart: A Recharts BarChart showing projected market growth over 4 years.
   • Competitor List: A list of competitors with "Strength" (Green check) and "Weakness" (Amber alert) attributes.
   • Action Plan: A list of 3 suggested next steps.

Data & Logic: