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<!DOCTYPE html>
<html lang="en" class="dark">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>IronChronicle | Secure Login</title>
    <link rel="icon" type="image/x-icon" href="data:image/svg+xml,<svg xmlns=%22http://www.w3.org/2000/svg%22 viewBox=%220 0 100 100%22><text y=%22.9em%22 font-size=%2290%22>🛡️</text></svg>">
    <script src="https://cdn.tailwindcss.com"></script>
    <script src="https://cdn.jsdelivr.net/npm/feather-icons/dist/feather.min.js"></script>
    <script>
        tailwind.config = {
            darkMode: 'class',
            theme: {
                extend: {
                    colors: {
                        military: {
                            500: '#22c55e',
                            600: '#16a34a',
                            800: '#14532d',
                            900: '#052e16',
                            950: '#020617',
                        }
                    },
                    fontFamily: {
                        mono: ['"Courier Prime"', 'Courier', 'monospace'],
                        sans: ['"Inter"', 'sans-serif'],
                    }
                }
            }
        }
    </script>
    <style>
        @import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&display=swap');
        @import url('https://fonts.googleapis.com/css2?family=Courier+Prime:wght@400;700&display=swap');
        
        body {
            font-family: 'Inter', sans-serif;
            background: linear-gradient(135deg, #020617 0%, #0f172a 50%, #020617 100%);
        }
        
        .login-container {
            background: rgba(15, 23, 42, 0.8);
            backdrop-filter: blur(20px);
            border: 1px solid rgba(34, 197, 94, 0.2);
        }
        
        .input-field {
            background: rgba(0, 0, 0, 0.4);
            border: 1px solid rgba(71, 85, 105, 0.6);
            transition: all 0.3s ease;
        }
        
        .input-field:focus {
            border-color: #22c55e;
            box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.1);
            outline: none;
        }
        
        .login-btn {
            background: linear-gradient(135deg, #22c55e, #16a34a);
            transition: all 0.3s ease;
        }
        
        .login-btn:hover {
            background: linear-gradient(135deg, #16a34a, #15803d);
            box-shadow: 0 4px 20px rgba(34, 197, 94, 0.4);
            transform: translateY(-2px);
        }
        
        .login-btn:disabled {
            opacity: 0.5;
            cursor: not-allowed;
            transform: none;
        }
        
        .shield-icon {
            filter: drop-shadow(0 0 20px rgba(34, 197, 94, 0.5));
        }
        
        .scan-line {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, #22c55e, transparent);
            animation: scan 3s linear infinite;
        }
        
        @keyframes scan {
            0% { transform: translateY(0); opacity: 0; }
            10% { opacity: 1; }
            90% { opacity: 1; }
            100% { transform: translateY(400px); opacity: 0; }
        }
        
        .error-shake {
            animation: shake 0.5s ease-in-out;
        }
        
        @keyframes shake {
            0%, 100% { transform: translateX(0); }
            20%, 60% { transform: translateX(-10px); }
            40%, 80% { transform: translateX(10px); }
        }
        
        .loading-spinner {
            border: 2px solid rgba(255, 255, 255, 0.2);
            border-top: 2px solid #22c55e;
            border-radius: 50%;
            width: 20px;
            height: 20px;
            animation: spin 1s linear infinite;
        }
        
        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }
        
        .footer-text {
            font-family: 'Courier Prime', monospace;
            font-size: 0.7rem;
            color: rgba(100, 116, 139, 0.6);
        }
    </style>
</head>
<body class="min-h-screen flex items-center justify-center p-4">
    <div class="w-full max-w-md">
        <!-- Logo Header -->
        <div class="text-center mb-8">
            <div class="inline-flex items-center justify-center w-20 h-20 rounded-full bg-slate-900 border border-military-500/30 shield-icon mb-4">
                <svg xmlns="http://www.w3.org/2000/svg" width="40" height="40" viewBox="0 0 24 24" fill="none" stroke="#22c55e" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round">
                    <path d="M12 22s8-4 8-10V5l-8-3-8 3v7c0 6 8 10 8 10z"></path>
                </svg>
            </div>
            <h1 class="text-3xl font-bold text-white tracking-wider">IRON<span class="text-military-500">CHRONICLE</span></h1>
            <p class="text-slate-500 text-sm mt-2 font-mono">MILITARY NARRATIVE SYSTEM v4.2.0</p>
        </div>
        
        <!-- Login Container -->
        <div class="login-container rounded-2xl p-8 relative overflow-hidden">
            <div class="scan-line"></div>
            
            <h2 class="text-xl font-semibold text-white text-center mb-6">SECURE ACCESS</h2>
            
            <form id="login-form" class="space-y-5">
                <!-- Username Field -->
                <div>
                    <label for="username" class="block text-sm font-medium text-slate-400 mb-2">Username</label>
                    <div class="relative">
                        <i data-feather="user" class="absolute left-3 top-1/2 transform -translate-y-1/2 w-5 h-5 text-slate-500"></i>
                        <input 
                            type="text" 
                            id="username" 
                            name="username"
                            class="input-field w-full pl-10 pr-4 py-3 rounded-lg text-white placeholder-slate-500"
                            placeholder="Enter username"
                            autocomplete="username"
                        >
                    </div>
                </div>
                
                <!-- Password Field -->
                <div>
                    <label for="password" class="block text-sm font-medium text-slate-400 mb-2">Password</label>
                    <div class="relative">
                        <i data-feather="lock" class="absolute left-3 top-1/2 transform -translate-y-1/2 w-5 h-5 text-slate-500"></i>
                        <input 
                            type="password" 
                            id="password" 
                            name="password"
                            class="input-field w-full pl-10 pr-4 py-3 rounded-lg text-white placeholder-slate-500"
                            placeholder="Enter password"
                            autocomplete="current-password"
                        >
                    </div>
                </div>
                
                <!-- Error Message -->
                <div id="error-message" class="hidden bg-red-900/30 border border-red-500/50 rounded-lg p-3 text-red-400 text-sm text-center"></div>
                
                <!-- Submit Button -->
                <button 
                    type="submit" 
                    id="login-btn"
                    class="login-btn w-full py-3 rounded-lg text-white font-semibold flex items-center justify-center gap-2"
                >
                    <i data-feather="shield" class="w-5 h-5"></i>
                    <span>SECURE LOGIN</span>
                </button>
            </form>
            
            <!-- System Info -->
            <div class="mt-6 pt-6 border-t border-slate-700">
                <div class="grid grid-cols-2 gap-4 text-center">
                    <div class="footer-text">
                        <div class="text-slate-500">ENCRYPTION</div>
                        <div class="text-military-500">AES-256-GCM</div>
                    </div>
                    <div class="footer-text">
                        <div class="text-slate-500">NODE</div>
                        <div class="text-military-500">EU-WEST-4</div>
                    </div>
                </div>
            </div>
        </div>
        
        <!-- Footer -->
        <div class="text-center mt-6">
            <p class="footer-text">
                RESTRICTED ACCESS AUTHORIZED PERSONNEL ONLY<br>
                © 2024 IRONCHRONICLE SYSTEM
            </p>
        </div>
    </div>
    
    <script>
        // Initialize Feather Icons
        document.addEventListener('DOMContentLoaded', () => {
            feather.replace();
            
            // Credentials (in production, use proper backend authentication)
            const API_BASE_URL = window.location.hostname === 'localhost' 
                ? 'http://localhost:3000/api' 
                : 'https://api.ironchronicle.secure/api';
            
            const loginForm = document.getElementById('login-form');
            const errorMessage = document.getElementById('error-message');
            const loginBtn = document.getElementById('login-btn');
            
            loginForm.addEventListener('submit', async (e) => {
                e.preventDefault();
                
                const username = document.getElementById('username').value.trim();
                const password = document.getElementById('password').value;
                
                // Reset error
                errorMessage.classList.add('hidden');
                
                // Show loading state
                loginBtn.disabled = true;
                loginBtn.innerHTML = '<div class="loading-spinner"></div><span>AUTHENTICATING...</span>';
                feather.replace();
                
                try {
                    // Production API call
                    const response = await fetch(`${API_BASE_URL}/auth/login`, {
                        method: 'POST',
                        headers: {
                            'Content-Type': 'application/json',
                            'X-Request-ID': crypto.randomUUID()
                        },
                        body: JSON.stringify({ username, password })
                    });
                    
                    const data = await response.json();
                    
                    if (response.ok && data.token) {
                        // Store secure session
                        sessionStorage.setItem('ironchronicle_token', data.token);
                        sessionStorage.setItem('ironchronicle_user', data.user.username);
                        sessionStorage.setItem('ironchronicle_clearance', data.user.clearance);
                        sessionStorage.setItem('ironchronicle_session_id', data.sessionId);
                        
                        showToast('Authentication successful. Establishing secure connection...', 'success');
                        
                        // Redirect with token
                        setTimeout(() => {
                            window.location.href = `index.html?sid=${data.sessionId}`;
                        }, 800);
                    } else {
                        throw new Error(data.message || 'Authentication failed');
                    }
                } catch (error) {
                    errorMessage.textContent = error.message || 'System unavailable. Contact administrator.';
                    errorMessage.classList.remove('hidden');
                    
                    // Security shake effect
                    const container = document.querySelector('.login-container');
                    container.classList.add('error-shake');
                    setTimeout(() => container.classList.remove('error-shake'), 500);
                    
                    // Log failed attempt (in production, send to SIEM)
                    console.warn(`Failed login attempt: ${username} at ${new Date().toISOString()}`);
                } finally {
                    loginBtn.disabled = false;
                    loginBtn.innerHTML = '<i data-feather="shield" class="w-5 h-5"></i><span>SECURE LOGIN</span>';
                    feather.replace();
                }
            });
            
            // Check for existing valid session
            const existingToken = sessionStorage.getItem('ironchronicle_token');
            if (existingToken) {
                // Validate token silently
                fetch(`${API_BASE_URL}/auth/verify`, {
                    headers: { 'Authorization': `Bearer ${existingToken}` }
                }).then(r => {
                    if (r.ok) window.location.href = 'index.html';
                }).catch(() => {
                    sessionStorage.clear(); // Clear invalid session
                });
            }
            
            // Toast notification function
            window.showToast = function(message, type = 'info') {
                const toast = document.createElement('div');
                const bgColor = type === 'success' ? 'bg-military-600' : type === 'error' ? 'bg-red-600' : 'bg-slate-700';
                
                toast.className = `fixed bottom-4 left-1/2 transform -translate-x-1/2 ${bgColor} text-white px-6 py-3 rounded-lg shadow-lg flex items-center gap-2 text-sm font-medium animate-fade-in`;
                toast.innerHTML = `<i data-feather="${type === 'success' ? 'check-circle' : 'alert-circle'}" class="w-4 h-4"></i><span>${message}</span>`;
                
                document.body.appendChild(toast);
                feather.replace();
                
                setTimeout(() => {
                    toast.style.opacity = '0';
                    toast.style.transform = 'translateX(-50%) translateY(20px)';
                    toast.style.transition = 'all 0.3s ease';
                    setTimeout(() => toast.remove(), 300);
                }, 3000);
            };
        });
    </script>
</body>
</html>