components/toast-notification.js

class ToastNotification extends HTMLElement {
    constructor() {
        super();
        this.attachShadow({ mode: 'open' });
        this._timeout = null;
    }

    static get observedAttributes() {
        return ['type', 'title', 'message', 'duration', 'visible'];
    }

    connectedCallback() {
        this.render();
    }

    attributeChangedCallback(name, oldValue, newValue) {
        if (oldValue !== newValue) {
            this.render();
        }
    }

    disconnectedCallback() {
        if (this._timeout) {
            clearTimeout(this._timeout);
        }
    }

    show() {
        this.setAttribute('visible', 'true');
        this.render();
        
        const duration = parseInt(this.getAttribute('duration')) || 5000;
        
        if (this._timeout) {
            clearTimeout(this._timeout);
        }
        
        this._timeout = setTimeout(() => {
            this.hide();
        }, duration);
    }

    hide() {
        this.setAttribute('visible', 'false');
        this.render();
        
        if (this._timeout) {
            clearTimeout(this._timeout);
            this._timeout = null;
        }
    }

    render() {
        const type = this.getAttribute('type') || 'success';
        const title = this.getAttribute('title') || 'Notification';
        const message = this.getAttribute('message') || '';
        const visible = this.getAttribute('visible') === 'true';

        const typeConfig = {
            success: {
                iconBg: 'bg-green-100',
                iconColor: 'text-green-600',
                icon: '<path d="M22 11.08V12a10 10 0 1 1-5.93-9.14"></path><polyline points="22 4 12 14.01 9 11.01"></polyline>'
            },
            error: {
                iconBg: 'bg-red-100',
                iconColor: 'text-red-600',
                icon: '<circle cx="12" cy="12" r="10"></circle><line x1="15" y1="9" x2="9" y2="15"></line><line x1="9" y1="9" x2="15" y2="15"></line>'
            },
            warning: {
                iconBg: 'bg-yellow-100',
                iconColor: 'text-yellow-600',
                icon: '<path d="M10.29 3.86L1.82 18a2 2 0 0 0 1.71 3h16.94a2 2 0 0 0 1.71-3L13.71 3.86a2 2 0 0 0-3.42 0z"></path><line x1="12" y1="9" x2="12" y2="13"></line><line x1="12" y1="17" x2="12.01" y2="17"></line>'
            },
            info: {
                iconBg: 'bg-blue-100',
                iconColor: 'text-blue-600',
                icon: '<circle cx="12" cy="12" r="10"></circle><line x1="12" y1="16" x2="12" y2="12"></line><line x1="12" y1="8" x2="12.01" y2="8"></line>'
            }
        };

        const config = typeConfig[type] || typeConfig.success;

        this.shadowRoot.innerHTML = `
            <style>
                @import url('https://cdn.tailwindcss.com');
                
                :host {
                    display: block;
                    position: fixed;
                    bottom: 24px;
                    right: 24px;
                    z-index: 9999;
                }
                
                .toast {
                    background: white;
                    border-radius: 0.5rem;
                    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
                    border: 1px solid #e5e7eb;
                    padding: 1rem;
                    display: flex;
                    align-items: center;
                    gap: 0.75rem;
                    min-width: 300px;
                    max-width: 400px;
                    transform: translateY(100px);
                    opacity: 0;
                    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
                }
                
                .toast.visible {
                    transform: translateY(0);
                    opacity: 1;
                }
                
                .icon-container {
                    width: 2.5rem;
                    height: 2.5rem;
                    border-radius: 9999px;
                    display: flex;
                    align-items: center;
                    justify-content: center;
                    flex-shrink: 0;
                }
                
                .close-btn {
                    color: #9ca3af;
                    cursor: pointer;
                    transition: color 0.2s;
                }
                
                .close-btn:hover {
                    color: #6b7280;
                }
            </style>
            
            <div class="toast ${visible ? 'visible' : ''}">
                <div class="icon-container ${config.iconBg}">
                    <svg xmlns="http://www.w3.org/2000/svg" class="w-5 h-5 ${config.iconColor}" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
                        ${config.icon}
                    </svg>
                </div>
                <div class="flex-1 min-w-0">
                    <p class="font-medium text-gray-900 text-sm">${title}</p>
                    ${message ? `<p class="text-sm text-gray-600 mt-0.5">${message}</p>` : ''}
                </div>
                <button class="close-btn" onclick="this.getRootNode().host.hide()">
                    <svg xmlns="http://www.w3.org/2000/svg" class="w-4 h-4" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><line x1="18" y1="6" x2="6" y2="18"></line><line x1="6" y1="6" x2="18" y2="18"></line></svg>
                </button>
            </div>
        `;
    }
}

customElements.define('toast-notification', ToastNotification);