<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <title>Change Password - ChatBot</title>
    <style>
        @import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Inter', sans-serif;
        }

        body {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            padding: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .change-password-container {
            background: white;
            max-width: 500px;
            width: 100%;
            padding: 40px;
            border-radius: 20px;
            box-shadow: 0 20px 40px rgba(0,0,0,0.2);
            transition: transform 0.3s ease;
        }

        .change-password-container:hover {
            transform: translateY(-5px);
            box-shadow: 0 30px 60px rgba(0,0,0,0.3);
        }

        .header {
            text-align: center;
            margin-bottom: 30px;
        }

        .header h1 {
            color: #333;
            font-size: 28px;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .header p {
            color: #666;
            font-size: 16px;
        }

        .back-link {
            margin-bottom: 20px;
        }

        .back-link a {
            color: #667eea;
            text-decoration: none;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .back-link a:hover {
            text-decoration: underline;
        }

        .input-group {
            margin-bottom: 25px;
        }

        label {
            display: block;
            margin-bottom: 8px;
            color: #555;
            font-weight: 600;
            font-size: 14px;
        }

        input[type="password"] {
            width: 100%;
            padding: 14px 18px;
            font-size: 16px;
            border-radius: 12px;
            border: 2px solid #ddd;
            transition: 0.3s border-color ease;
            box-shadow: 0 2px 5px rgba(0,0,0,0.05);
        }

        input[type="password"]:focus {
            border-color: #667eea;
            outline: none;
            box-shadow: 0 0 12px rgba(102, 126, 234, 0.3);
        }

        .password-requirements {
            background: #f8f9fa;
            padding: 15px;
            border-radius: 8px;
            margin-bottom: 25px;
            font-size: 14px;
        }

        .password-requirements h4 {
            color: #333;
            margin-bottom: 10px;
            font-size: 14px;
            font-weight: 600;
        }

        .requirements-list {
            list-style: none;
            padding: 0;
        }

        .requirements-list li {
            color: #666;
            margin-bottom: 5px;
            padding-left: 20px;
            position: relative;
        }

        .requirements-list li:before {
            content: "•";
            color: #667eea;
            font-weight: bold;
            position: absolute;
            left: 0;
        }

        .btn {
            width: 100%;
            padding: 16px 0;
            border: none;
            border-radius: 12px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-block;
            text-align: center;
            margin-bottom: 10px;
        }

        .btn-primary {
            background: #667eea;
            color: white;
            box-shadow: 0 10px 20px rgba(102, 126, 234, 0.3);
        }

        .btn-primary:hover {
            background: #5a67d8;
            box-shadow: 0 15px 25px rgba(90, 103, 216, 0.4);
            transform: translateY(-1px);
        }

        .btn-secondary {
            background: #e2e8f0;
            color: #4a5568;
            border: 1px solid #cbd5e0;
        }

        .btn-secondary:hover {
            background: #cbd5e0;
            transform: translateY(-1px);
        }

        .alert {
            padding: 15px 20px;
            margin-bottom: 25px;
            border-radius: 10px;
            font-weight: 500;
        }

        .alert-success {
            background: #d4edda;
            color: #155724;
            border: 1px solid #c3e6cb;
        }

        .alert-error {
            background: #f8d7da;
            color: #721c24;
            border: 1px solid #f5c6cb;
        }

        .alert-warning {
            background: #fff3cd;
            color: #856404;
            border: 1px solid #ffeaa7;
        }

        .alert-info {
            background: #cce7ff;
            color: #004085;
            border: 1px solid #b8daff;
        }

        .security-notice {
            background: #e6f3ff;
            border: 1px solid #b8daff;
            padding: 15px;
            border-radius: 8px;
            margin-bottom: 25px;
            font-size: 14px;
            color: #004085;
        }

        .security-notice h4 {
            margin-bottom: 8px;
            font-size: 14px;
            font-weight: 600;
        }

        .form-actions {
            display: flex;
            gap: 15px;
            margin-top: 30px;
        }

        .form-actions .btn {
            width: auto;
            flex: 1;
            margin-bottom: 0;
        }

        @media (max-width: 600px) {
            .change-password-container {
                margin: 10px;
                padding: 30px 20px;
            }

            .form-actions {
                flex-direction: column;
            }

            .form-actions .btn {
                width: 100%;
            }
        }
    </style>
</head>
<body>
    <div class="change-password-container">
        <div class="back-link">
            <a href="{{ url_for('dashboard') }}">← Back to Dashboard</a>
        </div>

        <div class="header">
            <h1>Change Password</h1>
            <p>Update your account password</p>
        </div>

        <!-- Flash Messages -->
        {% with messages = get_flashed_messages(with_categories=true) %}
            {% if messages %}
                {% for category, message in messages %}
                    <div class="alert alert-{{ 'error' if category == 'error' else category }}">
                        {{ message }}
                    </div>
                {% endfor %}
            {% endif %}
        {% endwith %}

        <div class="security-notice">
            <h4>🔒 Security Notice</h4>
            <p>For your security, we require your current password to make changes. Your new password will be encrypted and stored securely.</p>
        </div>

        <form method="POST" action="{{ url_for('change_password') }}">
            <div class="input-group">
                <label for="current_password">Current Password</label>
                <input type="password" id="current_password" name="current_password"
                       placeholder="Enter your current password"
                       required autocomplete="current-password" />
            </div>

            <div class="input-group">
                <label for="new_password">New Password</label>
                <input type="password" id="new_password" name="new_password"
                       placeholder="Enter your new password"
                       required autocomplete="new-password" />
            </div>

            <div class="input-group">
                <label for="confirm_password">Confirm New Password</label>
                <input type="password" id="confirm_password" name="confirm_password"
                       placeholder="Confirm your new password"
                       required autocomplete="new-password" />
            </div>

            <div class="password-requirements">
                <h4>Password Requirements:</h4>
                <ul class="requirements-list">
                    <li>At least 8 characters long</li>
                    <li>Contains at least one uppercase letter (A-Z)</li>
                    <li>Contains at least one lowercase letter (a-z)</li>
                    <li>Contains at least one number (0-9)</li>
                    <li>Contains at least one special character (!@#$%^&*)</li>
                </ul>
            </div>

            <div class="form-actions">
                <button type="submit" class="btn btn-primary">
                    Update Password
                </button>
                <a href="{{ url_for('dashboard') }}" class="btn btn-secondary">
                    Cancel
                </a>
            </div>
        </form>
    </div>

    <script>
        // Simple client-side validation for better UX
        document.addEventListener('DOMContentLoaded', function() {
            const form = document.querySelector('form');
            const newPassword = document.getElementById('new_password');
            const confirmPassword = document.getElementById('confirm_password');

            form.addEventListener('submit', function(e) {
                if (newPassword.value !== confirmPassword.value) {
                    e.preventDefault();
                    alert('New passwords do not match!');
                    confirmPassword.focus();
                    return false;
                }

                if (newPassword.value.length < 8) {
                    e.preventDefault();
                    alert('Password must be at least 8 characters long!');
                    newPassword.focus();
                    return false;
                }
            });

            // Real-time password confirmation check
            confirmPassword.addEventListener('input', function() {
                if (this.value && this.value !== newPassword.value) {
                    this.style.borderColor = '#e53e3e';
                } else if (this.value && this.value === newPassword.value) {
                    this.style.borderColor = '#38a169';
                } else {
                    this.style.borderColor = '#ddd';
                }
            });
        });
    </script>
</body>
</html>