Glassmorphism Cookie Consent Banner

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
}

/* Demo Background */
.demo-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.bg-gradient {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    opacity: 0.9;
}

.bg-shapes {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.shape {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    animation: float 6s ease-in-out infinite;
}

.shape-1 {
    width: 200px;
    height: 200px;
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.shape-2 {
    width: 150px;
    height: 150px;
    top: 60%;
    right: 15%;
    animation-delay: 2s;
}

.shape-3 {
    width: 100px;
    height: 100px;
    bottom: 20%;
    left: 60%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) rotate(180deg);
    }
}

/* Main Content */
.main-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 2rem;
    text-align: center;
    color: white;
}

.main-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    font-weight: 700;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.main-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    max-width: 600px;
}

.demo-btn {
    padding: 12px 24px;
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 12px;
    color: white;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.demo-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

/* Cookie Banner */
.cookie-banner {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    width: 90%;
    max-width: 500px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    padding: 1.5rem;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.cookie-banner.show {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.cookie-content {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    position: relative;
}

.cookie-icon {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    margin-top: 0.25rem;
}

.cookie-text {
    flex: 1;
    color: white;
}

.cookie-text h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: white;
}

.cookie-text p {
    font-size: 0.9rem;
    line-height: 1.5;
    opacity: 0.9;
    margin-bottom: 1rem;
}

.cookie-actions {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 12px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    min-width: 80px;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-1px);
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

.btn-shine {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s ease;
}

.btn-primary:hover .btn-shine {
    left: 100%;
}

.cookie-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 32px;
    height: 32px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    opacity: 0.7;
}

.cookie-close:hover {
    background: rgba(255, 255, 255, 0.2);
    opacity: 1;
    transform: rotate(90deg);
}

.cookie-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(2px);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.cookie-backdrop.show {
    opacity: 1;
    visibility: visible;
}

/* Responsive Design */
@media (max-width: 768px) {
    .cookie-banner {
        bottom: 1rem;
        left: 1rem;
        right: 1rem;
        width: auto;
        max-width: none;
        transform: translateY(100px);
        padding: 1.25rem;
    }
    
    .cookie-banner.show {
        transform: translateY(0);
    }
    
    .cookie-content {
        flex-direction: column;
        gap: 1rem;
    }
    
    .cookie-icon {
        align-self: flex-start;
    }
    
    .cookie-actions {
        justify-content: stretch;
    }
    
    .btn {
        flex: 1;
        min-width: auto;
    }
    
    .main-content h1 {
        font-size: 2rem;
    }
    
    .main-content p {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .cookie-actions {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
}

/* Animation for better performance */
@media (prefers-reduced-motion: reduce) {
    .cookie-banner,
    .btn,
    .cookie-close,
    .shape {
        transition: none;
        animation: none;
    }
}

class GlassmorphismCookieBanner {
    constructor(options = {}) {
        this.options = {
            autoShow: true,
            showDelay: 1000,
            storageKey: 'cookieConsent',
            onAccept: null,
            onDecline: null,
            onClose: null,
            ...options
        };
        
        this.banner = null;
        this.backdrop = null;
        this.isVisible = false;
        
        this.init();
    }
    
    init() {
        this.banner = document.getElementById('cookieBanner');
        this.backdrop = document.getElementById('cookieBackdrop');
        
        if (!this.banner || !this.backdrop) {
            console.error('Cookie banner elements not found');
            return;
        }
        
        this.setupEventListeners();
        this.checkStoredConsent();
        
        if (this.options.autoShow && !this.hasConsent()) {
            setTimeout(() => this.show(), this.options.showDelay);
        }
    }
    
    setupEventListeners() {
        // Keyboard navigation
        document.addEventListener('keydown', (e) => {
            if (this.isVisible && e.key === 'Escape') {
                this.hide();
            }
        });
        
        // Backdrop click
        this.backdrop.addEventListener('click', () => {
            this.hide();
        });
        
        // Focus trap
        this.banner.addEventListener('keydown', (e) => {
            if (e.key === 'Tab') {
                this.handleTabNavigation(e);
            }
        });
    }
    
    handleTabNavigation(e) {
        const focusableElements = this.banner.querySelectorAll(
            'button, [href], input, select, textarea, [tabindex]:not([tabindex="-1"])'
        );
        const firstElement = focusableElements[0];
        const lastElement = focusableElements[focusableElements.length - 1];
        
        if (e.shiftKey) {
            if (document.activeElement === firstElement) {
                e.preventDefault();
                lastElement.focus();
            }
        } else {
            if (document.activeElement === lastElement) {
                e.preventDefault();
                firstElement.focus();
            }
        }
    }
    
    show() {
        if (this.isVisible) return;
        
        this.isVisible = true;
        this.backdrop.classList.add('show');
        
        // Small delay for backdrop animation
        setTimeout(() => {
            this.banner.classList.add('show');
            this.focusFirstElement();
        }, 100);
        
        // Add body scroll lock
        document.body.style.overflow = 'hidden';
    }
    
    hide() {
        if (!this.isVisible) return;
        
        this.isVisible = false;
        this.banner.classList.remove('show');
        
        setTimeout(() => {
            this.backdrop.classList.remove('show');
        }, 200);
        
        // Remove body scroll lock
        document.body.style.overflow = '';
        
        if (this.options.onClose) {
            this.options.onClose();
        }
    }
    
    accept() {
        this.setConsent(true);
        this.hide();
        
        if (this.options.onAccept) {
            this.options.onAccept();
        }
        
        this.showNotification('Cookies accepted! Thank you.', 'success');
    }
    
    decline() {
        this.setConsent(false);
        this.hide();
        
        if (this.options.onDecline) {
            this.options.onDecline();
        }
        
        this.showNotification('Cookie preferences saved.', 'info');
    }
    
    setConsent(accepted) {
        const consent = {
            accepted,
            timestamp: Date.now(),
            version: '1.0'
        };
        
        localStorage.setItem(this.options.storageKey, JSON.stringify(consent));
    }
    
    hasConsent() {
        const stored = localStorage.getItem(this.options.storageKey);
        return stored !== null;
    }
    
    checkStoredConsent() {
        const stored = localStorage.getItem(this.options.storageKey);
        if (stored) {
            try {
                const consent = JSON.parse(stored);
                // Check if consent is still valid (e.g., not older than 1 year)
                const oneYear = 365 * 24 * 60 * 60 * 1000;
                if (Date.now() - consent.timestamp > oneYear) {
                    localStorage.removeItem(this.options.storageKey);
                    return false;
                }
                return true;
            } catch (e) {
                localStorage.removeItem(this.options.storageKey);
                return false;
            }
        }
        return false;
    }
    
    focusFirstElement() {
        const firstButton = this.banner.querySelector('button');
        if (firstButton) {
            firstButton.focus();
        }
    }
    
    showNotification(message, type = 'info') {
        const notification = document.createElement('div');
        notification.className = `notification notification-${type}`;
        notification.innerHTML = `
            <div class="notification-content">
                <span>${message}</span>
                <button class="notification-close" onclick="this.parentElement.parentElement.remove()">
                    <svg width="14" height="14" viewBox="0 0 14 14" fill="none">
                        <path d="M10.5 3.5L3.5 10.5M3.5 3.5l7 7" stroke="currentColor" stroke-width="1.5" stroke-linecap="round"/>
                    </svg>
                </button>
            </div>
        `;
        
        // Add notification styles
        const style = document.createElement('style');
        style.textContent = `
            .notification {
                position: fixed;
                top: 2rem;
                right: 2rem;
                background: rgba(255, 255, 255, 0.1);
                backdrop-filter: blur(20px);
                border: 1px solid rgba(255, 255, 255, 0.2);
                border-radius: 12px;
                padding: 1rem;
                color: white;
                z-index: 10000;
                animation: slideInRight 0.3s ease;
                max-width: 300px;
            }
            .notification-content {
                display: flex;
                align-items: center;
                justify-content: space-between;
                gap: 1rem;
            }
            .notification-close {
                background: none;
                border: none;
                color: white;
                cursor: pointer;
                padding: 4px;
                border-radius: 4px;
                opacity: 0.7;
                transition: opacity 0.2s ease;
            }
            .notification-close:hover {
                opacity: 1;
            }
            .notification-success {
                border-color: rgba(34, 197, 94, 0.3);
                background: rgba(34, 197, 94, 0.1);
            }
            .notification-info {
                border-color: rgba(59, 130, 246, 0.3);
                background: rgba(59, 130, 246, 0.1);
            }
            @keyframes slideInRight {
                from {
                    transform: translateX(100%);
                    opacity: 0;
                }
                to {
                    transform: translateX(0);
                    opacity: 1;
                }
            }
            @media (max-width: 768px) {
                .notification {
                    top: 1rem;
                    right: 1rem;
                    left: 1rem;
                    max-width: none;
                }
            }
        `;
        
        if (!document.querySelector('#notification-styles')) {
            style.id = 'notification-styles';
            document.head.appendChild(style);
        }
        
        document.body.appendChild(notification);
        
        // Auto remove after 5 seconds
        setTimeout(() => {
            if (notification.parentElement) {
                notification.style.animation = 'slideInRight 0.3s ease reverse';
                setTimeout(() => notification.remove(), 300);
            }
        }, 5000);
    }
    
    // Public methods
    reset() {
        localStorage.removeItem(this.options.storageKey);
        this.show();
    }
    
    getConsent() {
        const stored = localStorage.getItem(this.options.storageKey);
        if (stored) {
            try {
                return JSON.parse(stored);
            } catch (e) {
                return null;
            }
        }
        return null;
    }
}

// Global functions for HTML onclick handlers
function showCookieBanner() {
    if (window.cookieBanner) {
        window.cookieBanner.show();
    }
}

function acceptCookies() {
    if (window.cookieBanner) {
        window.cookieBanner.accept();
    }
}

function declineCookies() {
    if (window.cookieBanner) {
        window.cookieBanner.decline();
    }
}

function hideCookieBanner() {
    if (window.cookieBanner) {
        window.cookieBanner.hide();
    }
}

// Initialize when DOM is loaded
document.addEventListener('DOMContentLoaded', () => {
    window.cookieBanner = new GlassmorphismCookieBanner({
        autoShow: false, // Set to true for auto-show
        onAccept: () => {
            console.log('Cookies accepted!');
            // Add your analytics or tracking code here
        },
        onDecline: () => {
            console.log('Cookies declined!');
            // Handle declined cookies
        }
    });
});