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<!DOCTYPE html>
<html>
<head>
    <title>Page Not Found</title>
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/css/bootstrap.min.css" rel="stylesheet">
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css">
    <style>
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background-color: #f8f9fa;
            padding-top: 50px;
            padding-bottom: 50px;
            color: #343a40;
            min-height: 100vh;
            display: flex;
            align-items: center;
        }
        .error-container {
            text-align: center;
            max-width: 600px;
            margin: 0 auto;
        }
        .error-code {
            font-size: 8rem;
            font-weight: 800;
            color: #dc3545;
            line-height: 1;
            margin-bottom: 1rem;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
            position: relative;
        }
        .error-code::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 100px;
            height: 4px;
            background: linear-gradient(90deg, transparent, #dc3545, transparent);
        }
        .error-icon {
            font-size: 5rem;
            color: #dc3545;
            margin-bottom: 1.5rem;
            animation: float 3s ease-in-out infinite;
        }
        @keyframes float {
            0% {
                transform: translateY(0px);
            }
            50% {
                transform: translateY(-15px);
            }
            100% {
                transform: translateY(0px);
            }
        }
        .error-title {
            font-size: 2rem;
            font-weight: 600;
            margin-bottom: 1rem;
            color: #343a40;
        }
        .error-message {
            font-size: 1.1rem;
            color: #6c757d;
            margin-bottom: 2rem;
        }
        .btn-primary {
            background: linear-gradient(135deg, #0d6efd 0%, #0099ff 100%);
            border: none;
            padding: 0.6rem 1.5rem;
            border-radius: 0.5rem;
            font-weight: 500;
            transition: all 0.3s ease;
        }
        .btn-primary:hover {
            background: linear-gradient(135deg, #0957cc 0%, #0080d6 100%);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(13, 110, 253, 0.3);
        }
    </style>
</head>
<body>
    <div class="container">
        <div class="error-container">
            <div class="error-icon">
                <i class="fas fa-search"></i>
            </div>
            <div class="error-code">404</div>
            <h1 class="error-title">Page Not Found</h1>
            <p class="error-message">
                The page you are looking for might have been removed, had its name changed, 
                or is temporarily unavailable.
            </p>
            <a href="{{ url_for('index') }}" class="btn btn-primary btn-lg">
                <i class="fas fa-home me-2"></i>Return to Home
            </a>
        </div>
    </div>
</body>
</html>