/**
 * Zentrales Glassmorphism-Benachrichtigungssystem für MYP Platform
 * Vereinheitlicht alle Notification-Typen mit modernem Design
 */

class GlassmorphismNotificationSystem {
    constructor() {
        this.notifications = new Map();
        this.toastCounter = 0;
        this.soundEnabled = localStorage.getItem('myp-notification-sound') !== 'false';
        this.animationsEnabled = !window.matchMedia('(prefers-reduced-motion: reduce)').matches;
        
        this.init();
        this.setupGlobalFunctions();
        this.injectStyles();
    }

    init() {
        // Container für Toasts erstellen
        this.createToastContainer();
        
        // Event-Listener für Einstellungen
        this.setupEventListeners();
        
        console.log('🎨 Glassmorphism Notification System initialisiert');
    }

    createToastContainer() {
        if (!document.getElementById('glassmorphism-toast-container')) {
            const container = document.createElement('div');
            container.id = 'glassmorphism-toast-container';
            container.className = 'notifications-container';
            document.body.appendChild(container);
        }
    }

    setupGlobalFunctions() {
        // Globale Funktionen überschreiben für einheitliches Design
        window.showFlashMessage = this.showToast.bind(this);
        window.showToast = this.showToast.bind(this);
        window.showNotification = this.showToast.bind(this);
        window.showSuccessMessage = (msg, duration) => this.showToast(msg, 'success', duration);
        window.showErrorMessage = (msg, duration) => this.showToast(msg, 'error', duration);
        window.showWarningMessage = (msg, duration) => this.showToast(msg, 'warning', duration);
        window.showInfoMessage = (msg, duration) => this.showToast(msg, 'info', duration);
        window.showSuccessNotification = (msg) => this.showToast(msg, 'success');
        
        // Spezielle Funktionen
        window.showPersistentAlert = this.showPersistentAlert.bind(this);
        window.showConfirmationToast = this.showConfirmationToast.bind(this);
        window.showProgressToast = this.showProgressToast.bind(this);
    }

    setupEventListeners() {
        // Keyboard Shortcuts
        document.addEventListener('keydown', (e) => {
            // ESC schließt alle Toasts
            if (e.key === 'Escape') {
                this.closeAllToasts();
            }
            // Ctrl/Cmd + Shift + N öffnet Benachrichtigungseinstellungen
            if ((e.ctrlKey || e.metaKey) && e.shiftKey && e.key === 'N') {
                this.showNotificationSettings();
            }
        });

        // Geräte-Rotation
        window.addEventListener('orientationchange', () => {
            setTimeout(() => this.repositionAllToasts(), 200);
        });
    }

    /**
     * Zeigt eine Glassmorphism-Toast-Benachrichtigung
     */
    showToast(message, type = 'info', duration = 5000, options = {}) {
        // DND-Check
        if (window.dndManager?.isEnabled) {
            window.dndManager.suppressNotification(message, type);
            return null;
        }

        const toastId = `glass-toast-${++this.toastCounter}`;
        const toast = this.createToastElement(toastId, message, type, duration, options);
        
        this.addToContainer(toast);
        this.animateIn(toast);
        this.scheduleRemoval(toastId, duration, options.persistent);
        
        // Sound abspielen
        if (this.soundEnabled && options.playSound !== false) {
            this.playNotificationSound(type);
        }

        // Browser-Notification (optional)
        if (options.browserNotification && 'Notification' in window) {
            this.showBrowserNotification(message, type, options);
        }

        return toastId;
    }

    createToastElement(toastId, message, type, duration, options) {
        const toast = document.createElement('div');
        toast.id = toastId;
        toast.className = `glassmorphism-toast notification notification-${type}`;
        
        // Accessibility
        toast.setAttribute('role', 'alert');
        toast.setAttribute('aria-live', 'polite');
        toast.setAttribute('aria-atomic', 'true');

        const iconSvg = this.getIconSvg(type);
        const progressBar = duration > 0 && !options.persistent ? this.createProgressBar(duration) : '';
        
        toast.innerHTML = `
            <div class="toast-content">
                <div class="toast-header">
                    <div class="toast-icon">
                        ${iconSvg}
                    </div>
                    <div class="toast-body">
                        ${options.title ? `<div class="toast-title">${options.title}</div>` : ''}
                        <div class="toast-message">${message}</div>
                    </div>
                    <div class="toast-actions">
                        ${options.actions ? this.createActionButtons(options.actions, toastId) : ''}
                        <button class="toast-close" onclick="glassNotificationSystem.closeToast('${toastId}')" 
                                aria-label="Benachrichtigung schließen" title="Schließen">
                            <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12"/>
                            </svg>
                        </button>
                    </div>
                </div>
                ${progressBar}
            </div>
        `;

        // Hover-Events für Auto-Close-Pausierung
        if (duration > 0 && !options.persistent) {
            this.setupHoverEvents(toast, toastId);
        }

        this.notifications.set(toastId, {
            element: toast,
            type,
            message,
            timestamp: Date.now(),
            options
        });

        return toast;
    }

    createProgressBar(duration) {
        return `
            <div class="toast-progress">
                <div class="toast-progress-bar" style="animation: toast-progress ${duration}ms linear forwards;"></div>
            </div>
        `;
    }

    createActionButtons(actions, toastId) {
        return actions.map(action => `
            <button class="toast-action-btn toast-action-${action.type || 'secondary'}" 
                    onclick="${action.onClick}; ${action.closeAfter !== false ? `glassNotificationSystem.closeToast('${toastId}')` : ''}"
                    title="${action.title || action.text}">
                ${action.icon ? `<svg class="w-4 h-4">${action.icon}</svg>` : ''}
                ${action.text}
            </button>
        `).join('');
    }

    getIconSvg(type) {
        const icons = {
            success: `<svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M5 13l4 4L19 7"/>
            </svg>`,
            error: `<svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 9v2m0 4h.01m-6.938 4h13.856c1.54 0 2.502-1.667 1.732-2.5L13.732 4c-.77-.833-1.964-.833-2.732 0L3.732 16.5c-.77.833.192 2.5 1.732 2.5z"/>
            </svg>`,
            warning: `<svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 9v2m0 4h.01m-6.938 4h13.856c1.54 0 2.502-1.667 1.732-2.5L13.732 4c-.77-.833-1.964-.833-2.732 0L3.732 16.5c-.77.833.192 2.5 1.732 2.5z"/>
            </svg>`,
            info: `<svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M13 16h-1v-4h-1m1-4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z"/>
            </svg>`,
            loading: `<svg class="w-5 h-5 animate-spin" fill="none" viewBox="0 0 24 24">
                <circle cx="12" cy="12" r="10" stroke="currentColor" stroke-width="4" class="opacity-25"></circle>
                <path fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z" class="opacity-75"></path>
            </svg>`
        };
        return icons[type] || icons.info;
    }

    addToContainer(toast) {
        const container = document.getElementById('glassmorphism-toast-container');
        if (container) {
            container.appendChild(toast);
            this.repositionAllToasts();
        }
    }

    animateIn(toast) {
        if (!this.animationsEnabled) {
            toast.classList.add('show');
            return;
        }

        // Erweiterte Eingangsanimation mit Glassmorphism-Effekten
        toast.style.transform = 'translateX(120%) scale(0.8) rotateY(15deg)';
        toast.style.opacity = '0';
        toast.style.filter = 'blur(8px)';
        
        // Trigger animation
        requestAnimationFrame(() => {
            toast.style.transition = 'all 0.8s cubic-bezier(0.34, 1.56, 0.64, 1)';
            toast.style.transform = 'translateX(0) scale(1) rotateY(0deg)';
            toast.style.opacity = '1';
            toast.style.filter = 'blur(0px)';
            toast.classList.add('show');
        });
    }

    setupHoverEvents(toast, toastId) {
        let timeoutId;
        let isPaused = false;
        
        const notification = this.notifications.get(toastId);
        if (!notification) return;

        const pauseTimer = () => {
            isPaused = true;
            clearTimeout(timeoutId);
            const progressBar = toast.querySelector('.toast-progress-bar');
            if (progressBar) {
                progressBar.style.animationPlayState = 'paused';
            }
            
            // Hover-Effekt verstärken
            toast.style.transform = 'translateY(-4px) scale(1.03)';
            toast.style.filter = 'brightness(1.1) saturate(1.1)';
        };

        const resumeTimer = () => {
            isPaused = false;
            const progressBar = toast.querySelector('.toast-progress-bar');
            if (progressBar) {
                progressBar.style.animationPlayState = 'running';
            }
            
            // Hover-Effekt zurücksetzen
            toast.style.transform = 'translateY(0) scale(1)';
            toast.style.filter = 'brightness(1) saturate(1)';
        };

        toast.addEventListener('mouseenter', pauseTimer);
        toast.addEventListener('mouseleave', resumeTimer);
        toast.addEventListener('focus', pauseTimer);
        toast.addEventListener('blur', resumeTimer);
    }

    scheduleRemoval(toastId, duration, persistent = false) {
        if (persistent || duration <= 0) return;

        setTimeout(() => {
            this.closeToast(toastId);
        }, duration);
    }

    closeToast(toastId) {
        const notification = this.notifications.get(toastId);
        if (!notification) return;

        const toast = notification.element;
        
        if (this.animationsEnabled) {
            // Verbesserte Ausgangsanimation
            toast.style.transition = 'all 0.6s cubic-bezier(0.4, 0, 1, 1)';
            toast.style.transform = 'translateX(120%) scale(0.8) rotateY(-15deg)';
            toast.style.opacity = '0';
            toast.style.filter = 'blur(4px)';
            
            setTimeout(() => {
                this.removeToast(toastId);
            }, 600);
        } else {
            this.removeToast(toastId);
        }
    }

    removeToast(toastId) {
        const notification = this.notifications.get(toastId);
        if (!notification) return;

        if (notification.element.parentNode) {
            notification.element.parentNode.removeChild(notification.element);
        }
        
        this.notifications.delete(toastId);
        this.repositionAllToasts();
    }

    repositionAllToasts() {
        const container = document.getElementById('glassmorphism-toast-container');
        if (!container) return;

        const toasts = Array.from(container.children);
        toasts.forEach((toast, index) => {
            // Gestaffelte Positionierung mit smooth transition
            toast.style.top = `${1 + index * 4.5}rem`;
            toast.style.zIndex = 1000 - index;
            
            // Leichter Versatz für Tiefeneffekt
            if (index > 0) {
                toast.style.transform = `scale(${1 - index * 0.02})`;
                toast.style.opacity = `${1 - index * 0.1}`;
            }
        });
    }

    closeAllToasts() {
        const toastIds = Array.from(this.notifications.keys());
        toastIds.forEach((id, index) => {
            setTimeout(() => this.closeToast(id), index * 100);
        });
    }

    /**
     * Spezielle Toast-Typen
     */
    showConfirmationToast(message, onConfirm, onCancel = null, options = {}) {
        return this.showToast(message, 'warning', 0, {
            persistent: true,
            title: options.title || 'Bestätigung erforderlich',
            actions: [
                {
                    text: options.confirmText || 'Bestätigen',
                    type: 'primary',
                    onClick: `(${onConfirm.toString()})()`
                },
                {
                    text: options.cancelText || 'Abbrechen',
                    type: 'secondary', 
                    onClick: onCancel ? `(${onCancel.toString()})()` : ''
                }
            ],
            ...options
        });
    }

    showProgressToast(message, type = 'info', options = {}) {
        const toastId = this.showToast(message, 'loading', 0, {
            persistent: true,
            title: options.title || 'Verarbeitung...',
            ...options
        });

        return {
            id: toastId,
            updateProgress: (percent) => this.updateProgressToast(toastId, percent),
            updateMessage: (newMessage) => this.updateToastMessage(toastId, newMessage),
            complete: (finalMessage, finalType = 'success') => {
                this.closeToast(toastId);
                if (finalMessage) {
                    this.showToast(finalMessage, finalType, 3000);
                }
            }
        };
    }

    updateProgressToast(toastId, percent) {
        const notification = this.notifications.get(toastId);
        if (!notification) return;

        let progressBar = notification.element.querySelector('.toast-progress-bar');
        if (!progressBar) {
            const progressContainer = document.createElement('div');
            progressContainer.className = 'toast-progress';
            progressContainer.innerHTML = `<div class="toast-progress-bar"></div>`;
            notification.element.querySelector('.toast-content').appendChild(progressContainer);
            progressBar = progressContainer.querySelector('.toast-progress-bar');
        }

        progressBar.style.width = `${Math.min(100, Math.max(0, percent))}%`;
    }

    updateToastMessage(toastId, newMessage) {
        const notification = this.notifications.get(toastId);
        if (!notification) return;

        const messageEl = notification.element.querySelector('.toast-message');
        if (messageEl) {
            messageEl.textContent = newMessage;
        }
    }

    showPersistentAlert(message, type = 'warning', options = {}) {
        return this.showToast(message, type, 0, {
            persistent: true,
            title: options.title || 'Wichtiger Hinweis',
            actions: [{
                text: 'Verstanden',
                type: 'primary',
                onClick: ''
            }],
            ...options
        });
    }

    /**
     * Browser-Benachrichtigungen
     */
    async showBrowserNotification(message, type, options = {}) {
        if (!('Notification' in window)) return null;

        if (Notification.permission === 'granted') {
            return new Notification(options.title || 'MYP Platform', {
                body: message,
                icon: '/static/icons/notification-icon.png',
                badge: '/static/icons/badge-icon.png',
                tag: `myp-${type}`,
                ...options.browserOptions
            });
        } else if (Notification.permission === 'default') {
            const permission = await Notification.requestPermission();
            if (permission === 'granted') {
                return this.showBrowserNotification(message, type, options);
            }
        }
        return null;
    }

    /**
     * Sound-System
     */
    playNotificationSound(type) {
        if (!this.soundEnabled) return;

        try {
            const audioContext = new (window.AudioContext || window.webkitAudioContext)();
            
            const frequencies = {
                success: [523.25, 659.25, 783.99], // C-E-G Akkord
                error: [440, 415.3, 370], // A-Ab-F# (dissonant)
                warning: [493.88, 523.25], // B-C
                info: [523.25], // C
                loading: [392, 440, 493.88] // G-A-B (aufsteigend)
            };

            const freq = frequencies[type] || frequencies.info;
            
            freq.forEach((f, i) => {
                setTimeout(() => {
                    const oscillator = audioContext.createOscillator();
                    const gainNode = audioContext.createGain();
                    
                    oscillator.connect(gainNode);
                    gainNode.connect(audioContext.destination);
                    
                    oscillator.frequency.setValueAtTime(f, audioContext.currentTime);
                    oscillator.type = type === 'error' ? 'sawtooth' : 'sine';
                    
                    gainNode.gain.setValueAtTime(0.1, audioContext.currentTime);
                    gainNode.gain.exponentialRampToValueAtTime(0.01, audioContext.currentTime + 0.2);
                    
                    oscillator.start(audioContext.currentTime);
                    oscillator.stop(audioContext.currentTime + 0.2);
                }, i * 150);
            });
        } catch (error) {
            // Silent fail
        }
    }

    toggleSound() {
        this.soundEnabled = !this.soundEnabled;
        localStorage.setItem('myp-notification-sound', this.soundEnabled.toString());
        this.showToast(
            `Benachrichtigungstöne ${this.soundEnabled ? 'aktiviert' : 'deaktiviert'}`,
            'info',
            2000
        );
    }

    /**
     * Einstellungen
     */
    showNotificationSettings() {
        const settingsHTML = `
            <div class="notification-settings">
                <h3>Benachrichtigungseinstellungen</h3>
                <label class="setting-item">
                    <input type="checkbox" ${this.soundEnabled ? 'checked' : ''} 
                           onchange="glassNotificationSystem.toggleSound()">
                    <span>Benachrichtigungstöne</span>
                </label>
                <label class="setting-item">
                    <input type="checkbox" ${this.animationsEnabled ? 'checked' : ''} 
                           onchange="glassNotificationSystem.toggleAnimations()">
                    <span>Animationen</span>
                </label>
            </div>
        `;

        this.showToast(settingsHTML, 'info', 0, {
            persistent: true,
            title: 'Einstellungen',
            actions: [{
                text: 'Schließen',
                type: 'secondary',
                onClick: ''
            }]
        });
    }

    toggleAnimations() {
        this.animationsEnabled = !this.animationsEnabled;
        this.showToast(
            `Animationen ${this.animationsEnabled ? 'aktiviert' : 'deaktiviert'}`,
            'info',
            2000
        );
    }

    /**
     * CSS-Styles einbetten
     */
    injectStyles() {
        if (document.getElementById('glassmorphism-notification-styles')) return;

        const styles = document.createElement('style');
        styles.id = 'glassmorphism-notification-styles';
        styles.textContent = `
            .glassmorphism-toast {
                margin-bottom: 0.75rem;
                transform: translateX(100%);
                opacity: 0;
                transition: all 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
                will-change: transform, opacity, filter;
                /* Erweiterte Glassmorphism-Eigenschaften */
                backdrop-filter: blur(50px) saturate(200%) brightness(120%) contrast(110%);
                -webkit-backdrop-filter: blur(50px) saturate(200%) brightness(120%) contrast(110%);
                box-shadow: 
                    0 32px 64px rgba(0, 0, 0, 0.25),
                    0 16px 32px rgba(0, 0, 0, 0.15),
                    0 8px 16px rgba(0, 0, 0, 0.1),
                    inset 0 2px 0 rgba(255, 255, 255, 0.4),
                    inset 0 1px 0 rgba(255, 255, 255, 0.6),
                    0 0 0 1px rgba(255, 255, 255, 0.15);
                border-radius: 1.5rem;
                overflow: hidden;
                position: relative;
            }

            .glassmorphism-toast::before {
                content: '';
                position: absolute;
                top: 0;
                left: 0;
                right: 0;
                bottom: 0;
                background: 
                    radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.15) 0%, transparent 30%),
                    radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 30%),
                    linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
                pointer-events: none;
                opacity: 0;
                transition: opacity 0.3s ease;
            }

            .glassmorphism-toast:hover::before {
                opacity: 1;
            }

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

            /* Typ-spezifische erweiterte Glassmorphism-Effekte */
            .glassmorphism-toast.notification-success {
                background: linear-gradient(135deg, 
                    rgba(34, 197, 94, 0.25) 0%, 
                    rgba(134, 239, 172, 0.15) 30%,
                    rgba(34, 197, 94, 0.1) 70%,
                    rgba(16, 185, 129, 0.08) 100%);
                border: 1px solid rgba(34, 197, 94, 0.4);
                box-shadow: 
                    0 32px 64px rgba(34, 197, 94, 0.2),
                    0 16px 32px rgba(34, 197, 94, 0.1),
                    inset 0 2px 0 rgba(255, 255, 255, 0.4),
                    0 0 0 1px rgba(34, 197, 94, 0.3);
            }

            .glassmorphism-toast.notification-error {
                background: linear-gradient(135deg, 
                    rgba(239, 68, 68, 0.25) 0%, 
                    rgba(252, 165, 165, 0.15) 30%,
                    rgba(239, 68, 68, 0.1) 70%,
                    rgba(220, 38, 38, 0.08) 100%);
                border: 1px solid rgba(239, 68, 68, 0.4);
                box-shadow: 
                    0 32px 64px rgba(239, 68, 68, 0.2),
                    0 16px 32px rgba(239, 68, 68, 0.1),
                    inset 0 2px 0 rgba(255, 255, 255, 0.4),
                    0 0 0 1px rgba(239, 68, 68, 0.3);
            }

            .glassmorphism-toast.notification-warning {
                background: linear-gradient(135deg, 
                    rgba(245, 158, 11, 0.25) 0%, 
                    rgba(252, 211, 77, 0.15) 30%,
                    rgba(245, 158, 11, 0.1) 70%,
                    rgba(217, 119, 6, 0.08) 100%);
                border: 1px solid rgba(245, 158, 11, 0.4);
                box-shadow: 
                    0 32px 64px rgba(245, 158, 11, 0.2),
                    0 16px 32px rgba(245, 158, 11, 0.1),
                    inset 0 2px 0 rgba(255, 255, 255, 0.4),
                    0 0 0 1px rgba(245, 158, 11, 0.3);
            }

            .glassmorphism-toast.notification-info {
                background: linear-gradient(135deg, 
                    rgba(59, 130, 246, 0.25) 0%, 
                    rgba(147, 197, 253, 0.15) 30%,
                    rgba(59, 130, 246, 0.1) 70%,
                    rgba(37, 99, 235, 0.08) 100%);
                border: 1px solid rgba(59, 130, 246, 0.4);
                box-shadow: 
                    0 32px 64px rgba(59, 130, 246, 0.2),
                    0 16px 32px rgba(59, 130, 246, 0.1),
                    inset 0 2px 0 rgba(255, 255, 255, 0.4),
                    0 0 0 1px rgba(59, 130, 246, 0.3);
            }

            .glassmorphism-toast.notification-loading {
                background: linear-gradient(135deg, 
                    rgba(99, 102, 241, 0.25) 0%, 
                    rgba(165, 180, 252, 0.15) 30%,
                    rgba(99, 102, 241, 0.1) 70%,
                    rgba(79, 70, 229, 0.08) 100%);
                border: 1px solid rgba(99, 102, 241, 0.4);
                box-shadow: 
                    0 32px 64px rgba(99, 102, 241, 0.2),
                    0 16px 32px rgba(99, 102, 241, 0.1),
                    inset 0 2px 0 rgba(255, 255, 255, 0.4),
                    0 0 0 1px rgba(99, 102, 241, 0.3);
            }

            /* Dark Mode Anpassungen */
            .dark .glassmorphism-toast {
                backdrop-filter: blur(60px) saturate(180%) brightness(110%) contrast(120%);
                -webkit-backdrop-filter: blur(60px) saturate(180%) brightness(110%) contrast(120%);
                box-shadow: 
                    0 32px 64px rgba(0, 0, 0, 0.6),
                    0 16px 32px rgba(0, 0, 0, 0.4),
                    0 8px 16px rgba(0, 0, 0, 0.3),
                    inset 0 2px 0 rgba(255, 255, 255, 0.2),
                    inset 0 1px 0 rgba(255, 255, 255, 0.3),
                    0 0 0 1px rgba(255, 255, 255, 0.1);
            }

            .toast-content {
                position: relative;
                overflow: hidden;
                padding: 1.25rem;
            }

            .toast-header {
                display: flex;
                align-items: flex-start;
                gap: 1rem;
            }

            .toast-icon {
                flex-shrink: 0;
                width: 2.5rem;
                height: 2.5rem;
                display: flex;
                align-items: center;
                justify-content: center;
                border-radius: 50%;
                background: rgba(255, 255, 255, 0.25);
                backdrop-filter: blur(15px);
                -webkit-backdrop-filter: blur(15px);
                border: 1px solid rgba(255, 255, 255, 0.4);
                box-shadow: 
                    0 8px 16px rgba(0, 0, 0, 0.1),
                    inset 0 1px 0 rgba(255, 255, 255, 0.5);
                transition: all 0.3s ease;
            }

            .toast-icon:hover {
                transform: scale(1.1) rotate(5deg);
                box-shadow: 
                    0 12px 24px rgba(0, 0, 0, 0.15),
                    inset 0 1px 0 rgba(255, 255, 255, 0.6);
            }

            .dark .toast-icon {
                background: rgba(0, 0, 0, 0.3);
                border: 1px solid rgba(255, 255, 255, 0.2);
                box-shadow: 
                    0 8px 16px rgba(0, 0, 0, 0.3),
                    inset 0 1px 0 rgba(255, 255, 255, 0.2);
            }

            .toast-body {
                flex: 1;
                min-width: 0;
            }

            .toast-title {
                font-weight: 700;
                font-size: 0.9rem;
                margin-bottom: 0.375rem;
                line-height: 1.3;
                letter-spacing: 0.01em;
                text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
            }

            .toast-message {
                font-size: 0.875rem;
                line-height: 1.5;
                opacity: 0.95;
                font-weight: 500;
                text-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
            }

            .toast-actions {
                display: flex;
                gap: 0.625rem;
                align-items: flex-start;
                flex-shrink: 0;
            }

            .toast-action-btn {
                padding: 0.5rem 1rem;
                border-radius: 0.75rem;
                font-size: 0.8125rem;
                font-weight: 600;
                border: none;
                cursor: pointer;
                transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
                display: flex;
                align-items: center;
                gap: 0.375rem;
                background: rgba(255, 255, 255, 0.2);
                color: inherit;
                backdrop-filter: blur(15px);
                -webkit-backdrop-filter: blur(15px);
                border: 1px solid rgba(255, 255, 255, 0.3);
                box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
                text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
            }

            .toast-action-btn:hover {
                background: rgba(255, 255, 255, 0.35);
                transform: translateY(-2px) scale(1.05);
                box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
            }

            .toast-action-btn:active {
                transform: translateY(-1px) scale(1.02);
                transition: transform 0.1s ease;
            }

            .toast-action-primary {
                background: linear-gradient(135deg, 
                    rgba(59, 130, 246, 0.9) 0%, 
                    rgba(37, 99, 235, 0.9) 100%);
                color: white;
                border-color: rgba(59, 130, 246, 0.6);
                box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
            }

            .toast-action-primary:hover {
                background: linear-gradient(135deg, 
                    rgba(59, 130, 246, 1) 0%, 
                    rgba(37, 99, 235, 1) 100%);
                box-shadow: 0 8px 20px rgba(59, 130, 246, 0.4);
            }

            .dark .toast-action-btn {
                background: rgba(0, 0, 0, 0.3);
                border: 1px solid rgba(255, 255, 255, 0.2);
                box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
            }

            .dark .toast-action-btn:hover {
                background: rgba(0, 0, 0, 0.4);
                box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
            }

            .toast-close {
                padding: 0.375rem;
                border-radius: 0.5rem;
                border: none;
                background: rgba(255, 255, 255, 0.15);
                color: inherit;
                cursor: pointer;
                opacity: 0.8;
                transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
                display: flex;
                align-items: center;
                justify-content: center;
                backdrop-filter: blur(15px);
                -webkit-backdrop-filter: blur(15px);
                border: 1px solid rgba(255, 255, 255, 0.2);
                box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
            }

            .toast-close:hover {
                opacity: 1;
                background: rgba(255, 255, 255, 0.25);
                transform: scale(1.15) rotate(90deg);
                box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
            }

            .toast-close:active {
                transform: scale(1.1) rotate(90deg);
                transition: transform 0.1s ease;
            }

            .dark .toast-close {
                background: rgba(0, 0, 0, 0.2);
                border: 1px solid rgba(255, 255, 255, 0.15);
                box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
            }

            .dark .toast-close:hover {
                background: rgba(0, 0, 0, 0.3);
                box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
            }

            .toast-progress {
                position: absolute;
                bottom: 0;
                left: 0;
                right: 0;
                height: 4px;
                background: rgba(255, 255, 255, 0.15);
                overflow: hidden;
                border-radius: 0 0 1.5rem 1.5rem;
            }

            .toast-progress-bar {
                height: 100%;
                background: linear-gradient(90deg, 
                    rgba(255, 255, 255, 0.7) 0%, 
                    rgba(255, 255, 255, 0.9) 50%,
                    rgba(255, 255, 255, 0.7) 100%);
                width: 0%;
                transition: width 0.3s ease;
                position: relative;
                border-radius: inherit;
                box-shadow: 
                    0 0 8px rgba(255, 255, 255, 0.5),
                    inset 0 1px 0 rgba(255, 255, 255, 0.8);
            }

            .toast-progress-bar::after {
                content: '';
                position: absolute;
                top: 0;
                left: 0;
                right: 0;
                bottom: 0;
                background: linear-gradient(90deg, 
                    transparent 0%, 
                    rgba(255, 255, 255, 0.4) 50%, 
                    transparent 100%);
                animation: progress-shimmer 2s ease-in-out infinite;
            }

            @keyframes progress-shimmer {
                0% { transform: translateX(-100%); }
                100% { transform: translateX(100%); }
            }

            @keyframes toast-progress {
                from { width: 100%; }
                to { width: 0%; }
            }

            .notification-settings {
                max-width: 350px;
                padding: 0.5rem 0;
            }

            .notification-settings h3 {
                margin-bottom: 1rem;
                font-size: 1.1rem;
                font-weight: 700;
                color: inherit;
            }

            .setting-item {
                display: flex;
                align-items: center;
                gap: 0.75rem;
                margin: 1rem 0;
                cursor: pointer;
                font-size: 0.9rem;
                font-weight: 500;
                padding: 0.5rem;
                border-radius: 0.5rem;
                transition: all 0.2s ease;
            }

            .setting-item:hover {
                background: rgba(255, 255, 255, 0.1);
                transform: translateX(4px);
            }

            .setting-item input[type="checkbox"] {
                margin: 0;
                width: 1.2rem;
                height: 1.2rem;
                accent-color: currentColor;
            }

            /* Responsive Design */
            @media (max-width: 640px) {
                .notifications-container {
                    left: 0.75rem;
                    right: 0.75rem;
                    top: 0.75rem;
                }

                .glassmorphism-toast {
                    margin-bottom: 0.5rem;
                    border-radius: 1rem;
                }

                .toast-content {
                    padding: 1rem;
                }

                .toast-header {
                    gap: 0.75rem;
                }

                .toast-icon {
                    width: 2rem;
                    height: 2rem;
                }

                .toast-title {
                    font-size: 0.85rem;
                }

                .toast-message {
                    font-size: 0.8125rem;
                }

                .toast-action-btn {
                    padding: 0.4rem 0.8rem;
                    font-size: 0.75rem;
                }
            }

            /* High Contrast Mode */
            @media (prefers-contrast: high) {
                .glassmorphism-toast {
                    border: 2px solid currentColor;
                    backdrop-filter: none;
                    -webkit-backdrop-filter: none;
                    background: rgba(255, 255, 255, 0.95);
                }

                .dark .glassmorphism-toast {
                    background: rgba(0, 0, 0, 0.95);
                }
            }

            /* Reduced Motion */
            @media (prefers-reduced-motion: reduce) {
                .glassmorphism-toast,
                .toast-icon,
                .toast-action-btn,
                .toast-close {
                    transition: none !important;
                    animation: none !important;
                }

                .glassmorphism-toast:hover {
                    transform: none !important;
                }
            }
        `;

        document.head.appendChild(styles);
    }
}

// Globale Instanz erstellen
const glassNotificationSystem = new GlassmorphismNotificationSystem();

// Für Rückwärtskompatibilität
if (typeof window !== 'undefined') {
    window.glassNotificationSystem = glassNotificationSystem;
    window.GlassmorphismNotificationSystem = GlassmorphismNotificationSystem;
}

// Event für DOM-ready ohne Test-Benachrichtigung
document.addEventListener('DOMContentLoaded', () => {
    console.log('🎨 Glassmorphism Notification System bereit');
});