{% extends "base.html" %}

{% block title %}Create QR Code - QR Code Management{% endblock %}

{% block content %}
<div class="form-page">
    <div class="form-card">
        <div class="form-header">
            <h1>
                <i class="fas fa-qrcode"></i>
                Create New QR Code
            </h1>
            <p>Generate a QR code for your location or event</p>
        </div>

        <form method="POST" class="form" id="createQRForm">
            <!-- QR Code Preview Section -->
            <div class="qr-preview-section" id="qrPreviewSection" style="display: none;">
                <div class="preview-header">
                    <h3>
                        <i class="fas fa-eye"></i>
                        QR Code Preview
                    </h3>
                    <p>This is how your QR code will appear</p>
                </div>
                <div class="qr-preview-container">
                    <div class="qr-preview-image">
                        <canvas id="qrCanvas" width="200" height="200"></canvas>
                    </div>
                    <div class="qr-preview-info">
                        <div class="preview-item">
                            <strong>Name:</strong> <span id="previewName">-</span>
                        </div>
                        <div class="preview-item">
                            <strong>Location:</strong> <span id="previewLocation">-</span>
                        </div>
                        <div class="preview-item">
                            <strong>Event:</strong> <span id="previewEvent">-</span>
                        </div>
                    </div>
                </div>
            </div>

            <!-- Basic Information Section -->
            <div class="form-section">
                <div class="section-header">
                    <h3>
                        <i class="fas fa-info-circle"></i>
                        Basic Information
                    </h3>
                    <p>Provide the essential details for your QR code</p>
                </div>

                <div class="form-group">
                    <label for="name">
                        <i class="fas fa-tag"></i>
                        QR Code Name
                    </label>
                    <input type="text" id="name" name="name" required 
                           placeholder="Enter a descriptive name for this QR code"
                           maxlength="100">
                    <small class="form-help">This name will help you identify the QR code in your dashboard</small>
                    <div class="character-counter">
                        <span id="nameCounter">0/100</span>
                    </div>
                </div>

                <div class="form-group">
                    <label for="location">
                        <i class="fas fa-map-marker-alt"></i>
                        Location Name
                    </label>
                    <input type="text" id="location" name="location" required 
                           placeholder="e.g., Conference Room A, Main Lobby, etc."
                           maxlength="100">
                    <small class="form-help">The name of the physical location where this QR code will be used</small>
                    <div class="character-counter">
                        <span id="locationCounter">0/100</span>
                    </div>
                </div>
            </div>

            <!-- Location Details Section -->
            <div class="form-section">
                <div class="section-header">
                    <h3>
                        <i class="fas fa-building"></i>
                        Location Details
                    </h3>
                    <p>Provide the complete address and event information</p>
                </div>

                <div class="form-group">
                    <label for="location_address">
                        <i class="fas fa-home"></i>
                        Complete Address
                    </label>
                    <textarea id="location_address" name="location_address" required 
                              placeholder="Enter the full address including street, city, state, and ZIP code"
                              rows="3" maxlength="500"></textarea>
                    <small class="form-help">Include all address details for accurate location identification</small>
                    <div class="character-counter">
                        <span id="addressCounter">0/500</span>
                    </div>
                </div>

                <div class="form-group">
                    <label for="location_event">
                        <i class="fas fa-calendar-alt"></i>
                        Event or Purpose
                    </label>
                    <input type="text" id="location_event" name="location_event" required 
                           placeholder="e.g., Weekly Team Meeting, Customer Check-in, Training Session"
                           maxlength="200">
                    <small class="form-help">Describe the event or purpose for this QR code</small>
                    <div class="character-counter">
                        <span id="eventCounter">0/200</span>
                    </div>
                </div>
            </div>

            <!-- QR Code Options Section -->
            <div class="form-section">
                <div class="section-header">
                    <h3>
                        <i class="fas fa-cog"></i>
                        QR Code Options
                    </h3>
                    <p>Customize how your QR code will be generated</p>
                </div>

                <div class="form-row">
                    <div class="form-group">
                        <label for="qr_size">
                            <i class="fas fa-expand-arrows-alt"></i>
                            QR Code Size
                        </label>
                        <select id="qr_size" name="qr_size">
                            <option value="small">Small (200x200px)</option>
                            <option value="medium" selected>Medium (300x300px)</option>
                            <option value="large">Large (400x400px)</option>
                        </select>
                        <small class="form-help">Choose the size that best fits your intended use</small>
                    </div>

                    <div class="form-group">
                        <label for="qr_format">
                            <i class="fas fa-file-image"></i>
                            Output Format
                        </label>
                        <select id="qr_format" name="qr_format">
                            <option value="png" selected>PNG (Recommended)</option>
                            <option value="jpg">JPEG</option>
                            <option value="svg">SVG (Vector)</option>
                        </select>
                        <small class="form-help">PNG provides the best quality for QR codes</small>
                    </div>
                </div>

                <div class="form-group">
                    <label for="include_text">
                        <input type="checkbox" id="include_text" name="include_text" checked>
                        <span class="checkbox-label">Include readable text below QR code</span>
                    </label>
                    <small class="form-help">This will add the location name as text below the QR code for easier identification</small>
                </div>
            </div>

            <!-- Data Preview Section -->
            <div class="form-section">
                <div class="section-header">
                    <h3>
                        <i class="fas fa-database"></i>
                        QR Code Data Preview
                    </h3>
                    <p>This is the information that will be encoded in your QR code</p>
                </div>

                <div class="data-preview">
                    <div class="data-preview-content">
                        <pre id="qrDataPreview">Fill in the form above to see the QR code data...</pre>
                    </div>
                </div>
            </div>

            <!-- Form Actions -->
            <div class="form-actions">
                <a href="{{ url_for('dashboard') }}" class="btn btn-secondary">
                    <i class="fas fa-arrow-left"></i>
                    Back to Dashboard
                </a>
                
                <button type="button" class="btn btn-info" id="generatePreview">
                    <i class="fas fa-eye"></i>
                    Generate Preview
                </button>
                
                <button type="submit" class="btn btn-primary">
                    <i class="fas fa-plus"></i>
                    Create QR Code
                </button>
            </div>
        </form>
    </div>
</div>

<!-- QR Code Preview Modal -->
<div id="qrPreviewModal" class="modal">
    <div class="modal-content qr-modal">
        <div class="modal-header">
            <h3>QR Code Preview</h3>
            <button class="modal-close" onclick="closePreviewModal()">
                <i class="fas fa-times"></i>
            </button>
        </div>
        <div class="modal-body">
            <div class="modal-qr-preview">
                <div class="modal-qr-image">
                    <canvas id="modalQRCanvas" width="300" height="300"></canvas>
                </div>
                <div class="modal-qr-info">
                    <h4>QR Code Information</h4>
                    <div class="modal-info-grid">
                        <div class="info-item">
                            <strong>Name:</strong>
                            <span id="modalPreviewName">-</span>
                        </div>
                        <div class="info-item">
                            <strong>Location:</strong>
                            <span id="modalPreviewLocation">-</span>
                        </div>
                        <div class="info-item">
                            <strong>Event:</strong>
                            <span id="modalPreviewEvent">-</span>
                        </div>
                        <div class="info-item">
                            <strong>Address:</strong>
                            <span id="modalPreviewAddress">-</span>
                        </div>
                    </div>
                </div>
            </div>
        </div>
        <div class="modal-footer">
            <button onclick="downloadPreviewQR()" class="btn btn-info">
                <i class="fas fa-download"></i>
                Download Preview
            </button>
            <button onclick="closePreviewModal()" class="btn btn-secondary">
                Close Preview
            </button>
        </div>
    </div>
</div>
{% endblock %}

{% block extra_scripts %}
<!-- QR Code Generation Library -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/qrious/4.0.2/qrious.min.js"></script>

<script>
document.addEventListener('DOMContentLoaded', function() {
    initializeQRCodeCreation();
});

function initializeQRCodeCreation() {
    const form = document.getElementById('createQRForm');
    const previewBtn = document.getElementById('generatePreview');
    
    // Form inputs
    const nameInput = document.getElementById('name');
    const locationInput = document.getElementById('location');
    const addressInput = document.getElementById('location_address');
    const eventInput = document.getElementById('location_event');
    
    // Initialize character counters
    initializeCharacterCounters();
    
    // Initialize real-time preview updates
    initializeRealTimePreview();
    
    // Preview button functionality
    previewBtn.addEventListener('click', function() {
        if (validateForm()) {
            generateQRPreview();
            showPreviewModal();
        }
    });
    
    // Form submission
    form.addEventListener('submit', function(e) {
        if (!validateForm()) {
            e.preventDefault();
            return false;
        }
        
        // Show loading state
        const submitBtn = form.querySelector('button[type="submit"]');
        submitBtn.innerHTML = '<i class="fas fa-spinner fa-spin"></i> Creating QR Code...';
        submitBtn.disabled = true;
    });
    
    // Real-time form validation
    [nameInput, locationInput, addressInput, eventInput].forEach(input => {
        input.addEventListener('input', function() {
            updateDataPreview();
            clearFieldError(this);
        });
        
        input.addEventListener('blur', function() {
            validateField(this);
        });
    });
}

function initializeCharacterCounters() {
    const counters = [
        { input: 'name', counter: 'nameCounter', max: 100 },
        { input: 'location', counter: 'locationCounter', max: 100 },
        { input: 'location_address', counter: 'addressCounter', max: 500 },
        { input: 'location_event', counter: 'eventCounter', max: 200 }
    ];
    
    counters.forEach(item => {
        const input = document.getElementById(item.input);
        const counter = document.getElementById(item.counter);
        
        if (input && counter) {
            input.addEventListener('input', function() {
                const length = this.value.length;
                counter.textContent = `${length}/${item.max}`;
                
                if (length > item.max * 0.9) {
                    counter.classList.add('warning');
                } else {
                    counter.classList.remove('warning');
                }
            });
        }
    });
}

function initializeRealTimePreview() {
    const inputs = document.querySelectorAll('#name, #location, #location_event');
    
    inputs.forEach(input => {
        input.addEventListener('input', updateInlinePreview);
    });
}

function updateInlinePreview() {
    const name = document.getElementById('name').value || '-';
    const location = document.getElementById('location').value || '-';
    const event = document.getElementById('location_event').value || '-';
    
    document.getElementById('previewName').textContent = name;
    document.getElementById('previewLocation').textContent = location;
    document.getElementById('previewEvent').textContent = event;
    
    // Show/hide preview section
    const previewSection = document.getElementById('qrPreviewSection');
    if (name !== '-' || location !== '-' || event !== '-') {
        previewSection.style.display = 'block';
        previewSection.classList.add('fade-in');
    }
}

function updateDataPreview() {
    const name = document.getElementById('name').value;
    const location = document.getElementById('location').value;
    const address = document.getElementById('location_address').value;
    const event = document.getElementById('location_event').value;
    
    let qrData = '';
    if (event) qrData += `Event: ${event}\n`;
    if (location) qrData += `Location: ${location}\n`;
    if (address) qrData += `Address: ${address}`;
    
    document.getElementById('qrDataPreview').textContent = 
        qrData || 'Fill in the form above to see the QR code data...';
}

function validateForm() {
    const requiredFields = [
        { id: 'name', name: 'QR Code Name' },
        { id: 'location', name: 'Location Name' },
        { id: 'location_address', name: 'Complete Address' },
        { id: 'location_event', name: 'Event or Purpose' }
    ];
    
    let isValid = true;
    
    requiredFields.forEach(field => {
        const input = document.getElementById(field.id);
        if (!input.value.trim()) {
            showFieldError(input, `${field.name} is required`);
            isValid = false;
        } else {
            clearFieldError(input);
        }
    });
    
    // Additional validation
    const name = document.getElementById('name').value.trim();
    if (name && name.length < 3) {
        showFieldError(document.getElementById('name'), 'QR Code name must be at least 3 characters');
        isValid = false;
    }
    
    const address = document.getElementById('location_address').value.trim();
    if (address && address.length < 10) {
        showFieldError(document.getElementById('location_address'), 'Please provide a complete address');
        isValid = false;
    }
    
    return isValid;
}

function validateField(input) {
    const value = input.value.trim();
    
    if (input.hasAttribute('required') && !value) {
        showFieldError(input, 'This field is required');
        return false;
    }
    
    // Specific field validations
    if (input.id === 'name' && value && value.length < 3) {
        showFieldError(input, 'Name must be at least 3 characters');
        return false;
    }
    
    if (input.id === 'location_address' && value && value.length < 10) {
        showFieldError(input, 'Please provide a complete address');
        return false;
    }
    
    clearFieldError(input);
    return true;
}

function showFieldError(input, message) {
    const formGroup = input.closest('.form-group');
    formGroup.classList.add('has-error');
    
    let errorElement = formGroup.querySelector('.error-message');
    if (!errorElement) {
        errorElement = document.createElement('div');
        errorElement.className = 'error-message';
        formGroup.appendChild(errorElement);
    }
    
    errorElement.textContent = message;
}

function clearFieldError(input) {
    const formGroup = input.closest('.form-group');
    formGroup.classList.remove('has-error');
    
    const errorElement = formGroup.querySelector('.error-message');
    if (errorElement) {
        errorElement.remove();
    }
}

function generateQRPreview() {
    const name = document.getElementById('name').value;
    const location = document.getElementById('location').value;
    const address = document.getElementById('location_address').value;
    const event = document.getElementById('location_event').value;
    
    // Generate QR code data
    const qrData = `Event: ${event}\nLocation: ${location}\nAddress: ${address}`;
    
    // Generate QR code using QRious library
    const canvas = document.getElementById('modalQRCanvas');
    const qr = new QRious({
        element: canvas,
        value: qrData,
        size: 300,
        level: 'M'
    });
    
    // Update modal preview info
    document.getElementById('modalPreviewName').textContent = name;
    document.getElementById('modalPreviewLocation').textContent = location;
    document.getElementById('modalPreviewEvent').textContent = event;
    document.getElementById('modalPreviewAddress').textContent = address;
    
    // Store QR data for download
    window.currentPreviewQR = {
        name: name,
        canvas: canvas
    };
}

function showPreviewModal() {
    const modal = document.getElementById('qrPreviewModal');
    modal.style.display = 'flex';
    setTimeout(() => modal.classList.add('show'), 10);
}

function closePreviewModal() {
    const modal = document.getElementById('qrPreviewModal');
    modal.classList.remove('show');
    setTimeout(() => {
        modal.style.display = 'none';
    }, 200);
}

function downloadPreviewQR() {
    if (window.currentPreviewQR) {
        const canvas = window.currentPreviewQR.canvas;
        const link = document.createElement('a');
        link.download = window.currentPreviewQR.name.replace(/[^a-z0-9]/gi, '_').toLowerCase() + '_qr_preview.png';
        link.href = canvas.toDataURL();
        link.click();
        
        showToast('QR code preview downloaded!', 'success');
    }
}

function showToast(message, type = 'info') {
    const toast = document.createElement('div');
    toast.className = `toast toast-${type}`;
    toast.innerHTML = `
        <div class="toast-content">
            <i class="fas ${getToastIcon(type)}"></i>
            <span>${message}</span>
        </div>
    `;
    
    toast.style.cssText = `
        position: fixed;
        top: 20px;
        right: 20px;
        background: white;
        border-radius: 8px;
        box-shadow: 0 4px 12px rgba(0,0,0,0.15);
        padding: 1rem;
        z-index: 1000;
        opacity: 0;
        transform: translateX(100%);
        transition: all 0.3s ease;
        border-left: 4px solid ${getToastColor(type)};
        max-width: 400px;
    `;
    
    document.body.appendChild(toast);
    
    setTimeout(() => {
        toast.style.opacity = '1';
        toast.style.transform = 'translateX(0)';
    }, 100);
    
    setTimeout(() => {
        toast.style.opacity = '0';
        toast.style.transform = 'translateX(100%)';
        setTimeout(() => {
            if (document.body.contains(toast)) {
                document.body.removeChild(toast);
            }
        }, 300);
    }, 3000);
}

function getToastIcon(type) {
    const icons = {
        success: 'fa-check-circle',
        error: 'fa-exclamation-circle',
        warning: 'fa-exclamation-triangle',
        info: 'fa-info-circle'
    };
    return icons[type] || icons.info;
}

function getToastColor(type) {
    const colors = {
        success: '#059669',
        error: '#dc2626',
        warning: '#d97706',
        info: '#0891b2'
    };
    return colors[type] || colors.info;
}

// Close modals when clicking outside
document.addEventListener('click', function(e) {
    const modal = document.getElementById('qrPreviewModal');
    if (e.target === modal) {
        closePreviewModal();
    }
});

// Close modals with Escape key
document.addEventListener('keydown', function(e) {
    if (e.key === 'Escape') {
        closePreviewModal();
    }
});
</script>

<style>
/* Create QR Code Page Specific Styles */
.form-page {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 1rem;
}

.form-card {
    background: var(--white);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow);
    padding: 2rem;
    margin-bottom: 2rem;
}

.form-header {
    text-align: center;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--gray-200);
}

.form-header h1 {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 2rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 0.5rem;
}

.form-header p {
    color: var(--gray-500);
    font-size: 1rem;
}

/* Form Sections */
.form-section {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: var(--gray-50);
    border-radius: var(--radius-xl);
    border: 1px solid var(--gray-200);
}

.section-header {
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--gray-200);
}

.section-header h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: 0.5rem;
}

.section-header p {
    color: var(--gray-600);
    font-size: 0.875rem;
}

/* Form Groups and Inputs */
.form-group {
    position: relative;
    margin-bottom: 1.5rem;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    transition: var(--transition);
    background-color: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.form-help {
    display: block;
    margin-top: 0.5rem;
    font-size: 0.75rem;
    color: var(--gray-500);
}

/* Character Counters */
.character-counter {
    position: absolute;
    bottom: -1.5rem;
    right: 0;
    font-size: 0.75rem;
    color: var(--gray-400);
}

.character-counter.warning {
    color: var(--warning-color);
    font-weight: 600;
}

/* Form Row Layout */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

/* Checkbox Styling */
.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
    color: var(--gray-700);
    cursor: pointer;
}

input[type="checkbox"] {
    width: auto !important;
    margin-right: 0.5rem;
}

/* QR Preview Section */
.qr-preview-section {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: var(--white);
    border-radius: var(--radius-xl);
    opacity: 0;
    transform: translateY(-20px);
    transition: all 0.3s ease;
}

.qr-preview-section.fade-in {
    opacity: 1;
    transform: translateY(0);
}

.preview-header {
    text-align: center;
    margin-bottom: 1.5rem;
}

.preview-header h3 {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.qr-preview-container {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 1.5rem;
    align-items: center;
}

.qr-preview-image {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 120px;
    height: 120px;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.qr-preview-info {
    display: grid;
    gap: 0.5rem;
}

.preview-item {
    font-size: 0.875rem;
    opacity: 0.9;
}

.preview-item strong {
    opacity: 1;
}

/* Data Preview */
.data-preview {
    margin-top: 1rem;
}

.data-preview-content {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 1rem;
}

.data-preview-content pre {
    margin: 0;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.875rem;
    color: var(--gray-700);
    white-space: pre-wrap;
    word-wrap: break-word;
}

/* Form Actions */
.form-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--gray-200);
}

/* Error States */
.form-group.has-error input,
.form-group.has-error select,
.form-group.has-error textarea {
    border-color: var(--danger-color);
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

.error-message {
    margin-top: 0.5rem;
    font-size: 0.75rem;
    color: var(--danger-color);
    font-weight: 500;
}

/* Modal Specific Styles */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal.show {
    opacity: 1;
}

.modal-content.qr-modal {
    max-width: 700px;
    width: 100%;
}

.modal-qr-preview {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 2rem;
    align-items: center;
}

.modal-qr-image {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 1rem;
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
}

.modal-qr-info h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 1rem;
}

.modal-info-grid {
    display: grid;
    gap: 0.75rem;
}

.info-item {
    display: grid;
    grid-template-columns: 100px 1fr;
    gap: 0.5rem;
    font-size: 0.875rem;
}

.info-item strong {
    color: var(--gray-700);
    font-weight: 600;
}

.info-item span {
    color: var(--gray-900);
    word-break: break-word;
}

/* Responsive Design */
@media (max-width: 768px) {
    .form-page {
        padding: 0 0.5rem;
    }
    
    .form-card {
        padding: 1.5rem;
    }
    
    .form-section {
        padding: 1rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .form-actions {
        flex-direction: column;
        align-items: stretch;
    }
    
    .qr-preview-container {
        grid-template-columns: 1fr;
        gap: 1rem;
        text-align: center;
    }
    
    .modal-qr-preview {
        grid-template-columns: 1fr;
        gap: 1rem;
        text-align: center;
    }
    
    .info-item {
        grid-template-columns: 1fr;
        gap: 0.25rem;
    }
    
    .character-counter {
        position: static;
        text-align: right;
        margin-top: 0.5rem;
    }
}

@media (max-width: 480px) {
    .form-header h1 {
        font-size: 1.5rem;
        flex-direction: column;
        gap: 0.25rem;
    }
    
    .section-header h3 {
        font-size: 1.125rem;
        flex-direction: column;
        gap: 0.25rem;
        text-align: center;
    }
    
    .modal-content {
        margin: 0.5rem;
        max-height: calc(100vh - 1rem);
    }
}

/* Loading States */
.btn.loading {
    position: relative;
    pointer-events: none;
}

.btn.loading::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 16px;
    height: 16px;
    margin: -8px 0 0 -8px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Success States */
.form-group.has-success input,
.form-group.has-success select,
.form-group.has-success textarea {
    border-color: var(--success-color);
    box-shadow: 0 0 0 3px rgba(5, 150, 105, 0.1);
}

/* Focus Styles for Accessibility */
.btn:focus,
input:focus,
select:focus,
textarea:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    .form-section {
        border: 2px solid var(--gray-600);
    }
    
    .qr-preview-section {
        border: 2px solid var(--primary-color);
    }
    
    .data-preview-content {
        border: 2px solid var(--gray-600);
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .qr-preview-section {
        opacity: 1;
        transform: none;
    }
}

/* Print Styles */
@media print {
    .form-actions,
    .modal,
    .character-counter {
        display: none !important;
    }
    
    .form-page {
        max-width: none;
        padding: 0;
    }
    
    .form-card {
        box-shadow: none;
        border: 1px solid #000;
    }
    
    .form-section {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #000;
    }
}

/* Toast Notification Styles */
.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    padding: 1rem;
    z-index: 1000;
    opacity: 0;
    transform: translateX(100%);
    transition: all 0.3s ease;
    max-width: 400px;
    border-left: 4px solid;
}

.toast.show {
    opacity: 1;
    transform: translateX(0);
}

.toast-content {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
}

.toast.toast-success {
    border-left-color: var(--success-color);
}

.toast.toast-error {
    border-left-color: var(--danger-color);
}

.toast.toast-warning {
    border-left-color: var(--warning-color);
}

.toast.toast-info {
    border-left-color: var(--info-color);
}

.toast.toast-success .toast-content {
    color: var(--success-color);
}

.toast.toast-error .toast-content {
    color: var(--danger-color);
}

.toast.toast-warning .toast-content {
    color: var(--warning-color);
}

.toast.toast-info .toast-content {
    color: var(--info-color);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
    border-radius: var(--radius);
}

::-webkit-scrollbar-thumb {
    background: var(--gray-300);
    border-radius: var(--radius);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gray-400);
}

/* Selection Styles */
::selection {
    background: rgba(37, 99, 235, 0.2);
    color: var(--gray-900);
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.hidden { display: none !important; }

.fade-in {
    animation: fadeIn 0.5s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Canvas Styling */
canvas {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius);
}

/* Form Validation Visual Cues */
.form-group {
    transition: var(--transition);
}

.form-group.focused label {
    color: var(--primary-color);
}

.form-group.has-error label {
    color: var(--danger-color);
}

.form-group.has-success label {
    color: var(--success-color);
}

/* Enhanced Button Styles */
.btn {
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

/* Improved Modal Styles */
.modal-content {
    background: var(--white);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    max-height: 90vh;
    overflow-y: auto;
    animation: modalSlideUp 0.3s ease-out;
}

@keyframes modalSlideUp {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--gray-200);
}

.modal-header h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-900);
}

.modal-close {
    background: none;
    border: none;
    padding: 0.5rem;
    border-radius: var(--radius);
    cursor: pointer;
    color: var(--gray-500);
    transition: var(--transition);
}

.modal-close:hover {
    background-color: var(--gray-100);
    color: var(--gray-700);
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    padding: 1.5rem;
    border-top: 1px solid var(--gray-200);
}
</style>
{% endblock %}