{% extends "layout.html" %}

{% block content %}
<div class="verify-2fa-container">
    <div class="verification-card">
        <h1>Two-Factor Authentication</h1>
        <p class="instruction">Please enter the 6-digit code from your authenticator app to complete login.</p>
        
        <form method="POST" class="verification-form">
            <div class="form-group">
                <label for="totp_code">Verification Code:</label>
                <input type="text" id="totp_code" name="totp_code" 
                       placeholder="000000" maxlength="6" pattern="[0-9]{6}" 
                       required autocomplete="off" autofocus>
                <small>Enter the 6-digit code from your authenticator app</small>
            </div>
            
            <div class="button-group">
                <button type="submit" class="btn btn-primary">Verify & Login</button>
            </div>
        </form>
        
        <div class="help-section">
            <p><small>Having trouble? Make sure your device's time is synchronized and try a new code.</small></p>
            <p><small><a href="{{ url_for('login') }}">← Back to Login</a></small></p>
        </div>
    </div>
</div>

<style>
.verify-2fa-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 60vh;
    padding: 2rem;
}

.verification-card {
    background: white;
    border: 1px solid #dee2e6;
    border-radius: 0.5rem;
    padding: 2rem;
    max-width: 400px;
    width: 100%;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.verification-card h1 {
    text-align: center;
    color: #007bff;
    margin-bottom: 1rem;
}

.instruction {
    text-align: center;
    color: #6c757d;
    margin-bottom: 2rem;
}

.verification-form {
    margin-bottom: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
    text-align: center;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input[type="text"] {
    width: 200px;
    padding: 1rem;
    border: 2px solid #dee2e6;
    border-radius: 0.5rem;
    font-size: 1.5rem;
    text-align: center;
    letter-spacing: 0.3em;
    font-family: 'Courier New', monospace;
    transition: border-color 0.2s;
}

.form-group input[type="text"]:focus {
    outline: none;
    border-color: #007bff;
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

.form-group small {
    display: block;
    color: #6c757d;
    margin-top: 0.5rem;
}

.button-group {
    text-align: center;
    margin-bottom: 1.5rem;
}

/* Button styles now centralized in main style.css */

.help-section {
    text-align: center;
    border-top: 1px solid #dee2e6;
    padding-top: 1rem;
}

.help-section p {
    margin: 0.5rem 0;
}

.help-section a {
    color: #007bff;
    text-decoration: none;
}

.help-section a:hover {
    text-decoration: underline;
}

@media (max-width: 480px) {
    .verify-2fa-container {
        padding: 1rem;
    }
    
    .verification-card {
        padding: 1.5rem;
    }
    
    .form-group input[type="text"] {
        width: 100%;
        max-width: 200px;
    }
}
</style>

<script>
document.addEventListener('DOMContentLoaded', function() {
    const input = document.getElementById('totp_code');
    
    // Auto-format input to digits only
    input.addEventListener('input', function(e) {
        e.target.value = e.target.value.replace(/\D/g, '');
    });
    
    // Auto-submit when 6 digits are entered
    input.addEventListener('input', function(e) {
        if (e.target.value.length === 6) {
            // Small delay to let user see the complete code
            setTimeout(function() {
                document.querySelector('.verification-form').submit();
            }, 1000);
        }
    });
    
    // Focus on input when page loads
    input.focus();
});
</script>
{% endblock %}