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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Wealth Engine | Institutional Login</title>
    <link rel="stylesheet" href="/static/style.css?v=6">
    <script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/r134/three.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/vanta@latest/dist/vanta.net.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/gsap/3.12.2/gsap.min.js"></script>
    <style>
        /* Fallback to prevent white screens on laptop WebGL/CSS failure */
        body { background-color: #0f172a !important; color: #f8fafc; }
        .glass-panel { transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275); }
        .glass-panel:hover { transform: translateY(-3px) scale(1.01); }
    </style>
    <style>
        /* Mobile fixes for login */
        @media (max-width: 600px) {
            #loginContainer {
                padding: 1rem !important;
            }
            .glass-panel {
                padding: 1.5rem !important;
            }
            h2 {
                font-size: 1.5rem !important;
            }
        }
    </style>
</head>
<body id="vanta-bg" style="display: flex; align-items: center; justify-content: center; min-height: 100vh; margin: 0; overflow-x: hidden; overflow-y: auto; background: #0f172a; padding: 1rem; box-sizing: border-box;">

    <div class="noise-overlay" style="position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: -1;"></div>

    <div id="loginContainer" style="width: 100%; max-width: 600px; padding: 2rem; z-index: 10;">
        
        <!-- Step 1: Disclaimer -->
        <div id="stepDisclaimer" class="glass-panel" style="padding: 3rem; text-align: left;">
            <svg width="32" height="32" viewBox="0 0 24 24" fill="none" stroke="#f59e0b" stroke-width="2" style="margin-bottom: 1rem;">
                <path d="M10.29 3.86L1.82 18a2 2 0 0 0 1.71 3h16.94a2 2 0 0 0 1.71-3L13.71 3.86a2 2 0 0 0-3.42 0z"></path>
                <line x1="12" y1="9" x2="12" y2="13"></line>
                <line x1="12" y1="17" x2="12.01" y2="17"></line>
            </svg>
            <h2 style="margin-bottom: 1rem; color: #fff;">Important Legal Disclaimer</h2>
            <div style="color: var(--text-muted); font-size: 0.9rem; line-height: 1.6; margin-bottom: 2rem;">
                <p style="margin-bottom: 10px;">By accessing this platform, you acknowledge and agree to the following:</p>
                <ul style="margin-bottom: 10px; padding-left: 20px;">
                    <li style="margin-bottom: 8px;"><strong>Not Financial Advice:</strong> This platform is an experimental mathematical research tool, not a registered financial advisor.</li>
                    <li style="margin-bottom: 8px;"><strong>Historical Illusion:</strong> All optimizations and models are based on historical backtesting. Past performance carries absolutely no guarantee of future results.</li>
                    <li><strong>Your Responsibility:</strong> You are solely responsible for your own investment decisions, capital losses, and risk management.</li>
                </ul>
            </div>
            <button class="btn-primary" style="width: 100%; justify-content: center; background: #f59e0b; color: #000; font-weight: 600; border: none; padding: 12px; border-radius: 8px; cursor: pointer;" onclick="acceptDisclaimer()">
                I Understand and Agree
            </button>
        </div>

        <!-- Step 2: Authentication -->
        <div id="stepAuth" class="glass-panel" style="padding: 3rem; text-align: left; display: none;">
            <svg width="32" height="32" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" style="margin-bottom: 1rem; color: #60a5fa;">
                <rect x="3" y="11" width="18" height="11" rx="2" ry="2"></rect>
                <path d="M7 11V7a5 5 0 0 1 10 0v4"></path>
            </svg>
            <h2 style="margin-bottom: 0.5rem; color: #fff;">Restricted Access</h2>
            <p class="text-muted" style="margin-bottom: 1.5rem;">Please enter your institutional access key.</p>
            <form id="authForm" style="display: flex; flex-direction: column; gap: 1rem;">
                <input type="password" id="accessKey" placeholder="Access Key" style="width: 100%; text-align: center; letter-spacing: 2px;" required>
                <button type="submit" id="authBtn" class="btn-primary" style="justify-content: center; padding: 12px; position: relative;">
                    <span id="authBtnText">Authenticate</span>
                    <span id="authBtnLoading" class="spinner-anim" style="display: none; position: absolute;">⠋</span>
                </button>
                <div id="authError" style="color: #ef4444; font-size: 0.85rem; text-align: center; display: none;">Invalid Key</div>
            </form>
        </div>
    </div>

    <script>
        // Mouse Glow Tracking
        document.addEventListener("mousemove", (e) => {
            document.querySelectorAll(".glass-panel").forEach((el) => {
                const rect = el.getBoundingClientRect();
                el.style.setProperty("--mouse-x", `${e.clientX - rect.left}px`);
                el.style.setProperty("--mouse-y", `${e.clientY - rect.top}px`);
                el.classList.add("mouse-glow");
            });
        });

        // GSAP Initial Reveal
        gsap.fromTo("#stepDisclaimer", 
            { opacity: 0, y: 40 }, 
            { opacity: 1, y: 0, duration: 1.2, ease: "power3.out", delay: 0.2 }
        );

        function acceptDisclaimer() {
            const disc = document.getElementById('stepDisclaimer');
            const auth = document.getElementById('stepAuth');
            
            gsap.to(disc, {
                opacity: 0, scale: 0.95, duration: 0.4, ease: "power2.inOut",
                onComplete: () => {
                    disc.style.display = 'none';
                    auth.style.display = 'block';
                    gsap.fromTo(auth, 
                        { opacity: 0, y: 40 }, 
                        { opacity: 1, y: 0, duration: 0.8, ease: "power3.out",
                          onComplete: () => document.getElementById('accessKey').focus()
                        }
                    );
                }
            });
        }

        document.getElementById('authForm').addEventListener('submit', async (e) => {
            e.preventDefault();
            const inputKey = document.getElementById('accessKey').value;
            const errDiv = document.getElementById('authError');
            const authBtn = document.getElementById('authBtn');
            const authBtnText = document.getElementById('authBtnText');
            const authBtnLoading = document.getElementById('authBtnLoading');
            
            authBtn.disabled = true;
            authBtnText.style.opacity = '0';
            authBtnLoading.style.display = 'inline-block';
            errDiv.style.display = 'none';
            
            try {
                const res = await fetch('/api/auth', {
                    method: 'POST',
                    headers: { 'Content-Type': 'application/json' },
                    body: JSON.stringify({ key: inputKey })
                });
                if (res.ok) {
                    sessionStorage.setItem('accessKey', inputKey);
                    sessionStorage.setItem('authNavigating', 'true');
                    window.location.href = '/main';
                } else {
                    errDiv.style.display = 'block';
                    errDiv.textContent = "Access Denied. Invalid or Expired Key.";
                    document.getElementById('accessKey').value = '';
                    authBtn.disabled = false;
                    authBtnText.style.opacity = '1';
                    authBtnLoading.style.display = 'none';
                }
            } catch(err) {
                errDiv.style.display = 'block';
                errDiv.textContent = "Authentication server unreachable.";
                authBtn.disabled = false;
                authBtnText.style.opacity = '1';
                authBtnLoading.style.display = 'none';
            }
        });

        // Initialize Vanta 3D Background
        function initAmbientBackground() {
            if (window.VANTA) {
                window.VANTA.NET({
                    el: "#vanta-bg",
                    mouseControls: true,
                    touchControls: true,
                    gyroControls: false,
                    minHeight: 200.00,
                    minWidth: 200.00,
                    scale: 1.00,
                    scaleMobile: 1.00,
                    color: 0x3b82f6,
                    backgroundColor: 0x0f172a,
                    points: 12.00,
                    maxDistance: 22.00,
                    spacing: 16.00,
                    showDots: true
                });
            }
        }
        initAmbientBackground();
    </script>
</body>
</html>