Notification Toast

                .toast-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 24px;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: #f8fafc;
  min-height: 100vh;
  position: relative;
}

.toast-header {
  text-align: center;
  margin-bottom: 40px;
}

.toast-title {
  font-size: 36px;
  font-weight: 700;
  color: #1a202c;
  margin: 0 0 12px 0;
  background: linear-gradient(135deg, #667eea, #764ba2);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.toast-subtitle {
  font-size: 16px;
  color: #6b7280;
  margin: 0;
}

.toast-demo {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  background: white;
  border-radius: 16px;
  padding: 32px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.demo-controls h2,
.demo-preview h3 {
  font-size: 24px;
  font-weight: 600;
  color: #1a202c;
  margin: 0 0 24px 0;
}

.control-buttons {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 12px;
  margin-bottom: 32px;
}

.demo-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 16px;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  color: white;
}

.demo-btn svg {
  width: 16px;
  height: 16px;
}

.demo-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.demo-btn.success {
  background: #10b981;
}

.demo-btn.success:hover {
  background: #059669;
}

.demo-btn.error {
  background: #ef4444;
}

.demo-btn.error:hover {
  background: #dc2626;
}

.demo-btn.warning {
  background: #f59e0b;
}

.demo-btn.warning:hover {
  background: #d97706;
}

.demo-btn.info {
  background: #3b82f6;
}

.demo-btn.info:hover {
  background: #2563eb;
}

.demo-btn.loading {
  background: #8b5cf6;
}

.demo-btn.loading:hover {
  background: #7c3aed;
}

.demo-options {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 32px;
}

.option-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.option-group label {
  font-size: 14px;
  font-weight: 500;
  color: #374151;
  min-width: 80px;
}

.option-group select {
  flex: 1;
  padding: 8px 12px;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  font-size: 14px;
  background: white;
}

.option-group input[type="checkbox"] {
  margin-right: 8px;
}

.bulk-actions {
  display: flex;
  gap: 12px;
}

.action-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: #6b7280;
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
}

.action-btn:hover {
  background: #4b5563;
  transform: translateY(-1px);
}

.action-btn svg {
  width: 16px;
  height: 16px;
}

.demo-preview p {
  color: #6b7280;
  line-height: 1.6;
  margin-bottom: 24px;
}

.preview-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.stat-item {
  text-align: center;
  padding: 16px;
  background: #f8fafc;
  border-radius: 8px;
}

.stat-number {
  display: block;
  font-size: 24px;
  font-weight: 700;
  color: #1a202c;
  margin-bottom: 4px;
}

.stat-label {
  font-size: 12px;
  color: #6b7280;
  font-weight: 500;
}

/* Toast Areas */
.toast-area {
  position: fixed;
  z-index: 1000;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 400px;
  width: 100%;
}

.toast-area.top-right {
  top: 20px;
  right: 20px;
}

.toast-area.top-left {
  top: 20px;
  left: 20px;
}

.toast-area.bottom-right {
  bottom: 20px;
  right: 20px;
  flex-direction: column-reverse;
}

.toast-area.bottom-left {
  bottom: 20px;
  left: 20px;
  flex-direction: column-reverse;
}

.toast-area.top-center {
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  align-items: center;
}

.toast-area.bottom-center {
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  align-items: center;
  flex-direction: column-reverse;
}

/* Toast Styles */
.toast {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px;
  background: white;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  border-left: 4px solid;
  pointer-events: auto;
  position: relative;
  overflow: hidden;
  max-width: 400px;
  min-width: 300px;
}

.toast.success {
  border-left-color: #10b981;
}

.toast.error {
  border-left-color: #ef4444;
}

.toast.warning {
  border-left-color: #f59e0b;
}

.toast.info {
  border-left-color: #3b82f6;
}

.toast.loading {
  border-left-color: #8b5cf6;
}

.toast-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  margin-top: 2px;
}

.toast.success .toast-icon {
  color: #10b981;
}

.toast.error .toast-icon {
  color: #ef4444;
}

.toast.warning .toast-icon {
  color: #f59e0b;
}

.toast.info .toast-icon {
  color: #3b82f6;
}

.toast.loading .toast-icon {
  color: #8b5cf6;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

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

.toast-title {
  font-size: 14px;
  font-weight: 600;
  color: #1a202c;
  margin: 0 0 4px 0;
}

.toast-message {
  font-size: 13px;
  color: #6b7280;
  margin: 0;
  line-height: 1.4;
}

.toast-close {
  width: 20px;
  height: 20px;
  background: none;
  border: none;
  color: #9ca3af;
  cursor: pointer;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.toast-close:hover {
  background: #f3f4f6;
  color: #6b7280;
}

.toast-close svg {
  width: 14px;
  height: 14px;
}

.toast-progress {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 3px;
  background: rgba(0, 0, 0, 0.1);
  transition: width linear;
}

.toast.success .toast-progress {
  background: #10b981;
}

.toast.error .toast-progress {
  background: #ef4444;
}

.toast.warning .toast-progress {
  background: #f59e0b;
}

.toast.info .toast-progress {
  background: #3b82f6;
}

.toast.loading .toast-progress {
  background: #8b5cf6;
}

/* Toast Animations */
.toast-enter {
  opacity: 0;
  transform: translateX(100%);
}

.toast-enter-active {
  opacity: 1;
  transform: translateX(0);
  transition: all 0.3s ease;
}

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

.toast-exit-active {
  opacity: 0;
  transform: translateX(100%);
  transition: all 0.3s ease;
}

/* Left side animations */
.toast-area.top-left .toast-enter,
.toast-area.bottom-left .toast-enter {
  transform: translateX(-100%);
}

.toast-area.top-left .toast-exit-active,
.toast-area.bottom-left .toast-exit-active {
  transform: translateX(-100%);
}

/* Center animations */
.toast-area.top-center .toast-enter,
.toast-area.bottom-center .toast-enter {
  transform: translateY(-100%);
}

.toast-area.top-center .toast-exit-active,
.toast-area.bottom-center .toast-exit-active {
  transform: translateY(-100%);
}

/* Responsive Design */
@media (max-width: 768px) {
  .toast-container {
    padding: 24px 16px;
  }
  
  .toast-title {
    font-size: 28px;
  }
  
  .toast-demo {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 24px 16px;
  }
  
  .control-buttons {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .toast-area {
    left: 16px !important;
    right: 16px !important;
    max-width: none;
  }
  
  .toast-area.top-center,
  .toast-area.bottom-center {
    transform: none;
  }
  
  .toast {
    min-width: 0;
    max-width: none;
  }
}

@media (max-width: 480px) {
  .control-buttons {
    grid-template-columns: 1fr;
  }
  
  .demo-options {
    gap: 12px;
  }
  
  .option-group {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
  
  .option-group label {
    min-width: auto;
  }
  
  .option-group select {
    width: 100%;
  }
  
  .bulk-actions {
    flex-direction: column;
  }
  
  .preview-stats {
    grid-template-columns: 1fr;
  }
}

              

                document.addEventListener('DOMContentLoaded', () => {
  const demoButtons = document.querySelectorAll('.demo-btn');
  const positionSelect = document.getElementById('positionSelect');
  const durationSelect = document.getElementById('durationSelect');
  const soundEnabled = document.getElementById('soundEnabled');
  const animationEnabled = document.getElementById('animationEnabled');
  const showMultipleBtn = document.getElementById('showMultiple');
  const clearAllBtn = document.getElementById('clearAll');
  const totalShownEl = document.getElementById('totalShown');
  const currentActiveEl = document.getElementById('currentActive');
  const autoDismissedEl = document.getElementById('autoDismissed');
  
  let toastCounter = 0;
  let totalShown = 0;
  let autoDismissed = 0;
  let activeToasts = new Set();
  
  // Toast messages for different types
  const toastMessages = {
    success: [
      { title: 'Success!', message: 'Your action was completed successfully.' },
      { title: 'Saved!', message: 'Your changes have been saved.' },
      { title: 'Upload Complete', message: 'File uploaded successfully.' },
      { title: 'Payment Processed', message: 'Your payment was processed successfully.' }
    ],
    error: [
      { title: 'Error!', message: 'Something went wrong. Please try again.' },
      { title: 'Upload Failed', message: 'Failed to upload file. Check your connection.' },
      { title: 'Validation Error', message: 'Please check your input and try again.' },
      { title: 'Network Error', message: 'Unable to connect to server.' }
    ],
    warning: [
      { title: 'Warning!', message: 'This action cannot be undone.' },
      { title: 'Storage Full', message: 'You are running out of storage space.' },
      { title: 'Session Expiring', message: 'Your session will expire in 5 minutes.' },
      { title: 'Unsaved Changes', message: 'You have unsaved changes.' }
    ],
    info: [
      { title: 'Info', message: 'Here is some useful information for you.' },
      { title: 'New Feature', message: 'Check out our new feature in the settings.' },
      { title: 'Maintenance', message: 'Scheduled maintenance tonight at 2 AM.' },
      { title: 'Update Available', message: 'A new version is available for download.' }
    ],
    loading: [
      { title: 'Loading...', message: 'Please wait while we process your request.' },
      { title: 'Uploading...', message: 'Uploading your files, please wait.' },
      { title: 'Processing...', message: 'Processing payment, do not refresh.' },
      { title: 'Syncing...', message: 'Syncing your data across devices.' }
    ]
  };
  
  // Toast icons
  const toastIcons = {
    success: '<path d="M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z"/>',
    error: '<path d="M19 6.41L17.59 5 12 10.59 6.41 5 5 6.41 10.59 12 5 17.59 6.41 19 12 13.41 17.59 19 19 17.59 13.41 12z"/>',
    warning: '<path d="M1 21h22L12 2 1 21zm12-3h-2v-2h2v2zm0-4h-2v-4h2v4z"/>',
    info: '<path d="M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm1 15h-2v-6h2v6zm0-8h-2V7h2v2z"/>',
    loading: '<path d="M12 6v3l4-4-4-4v3c-4.42 0-8 3.58-8 8 0 1.57.46 3.03 1.24 4.26L6.7 14.8c-.45-.83-.7-1.79-.7-2.8 0-3.31 2.69-6 6-6z"/>'
  };
  
  // Create toast element
  function createToast(type, title, message, duration) {
    const toastId = `toast-\${++toastCounter}`;
    const toast = document.createElement('div');
    toast.className = `toast \${type}`;
    toast.id = toastId;
    
    const progressBar = duration > 0 ? `<div class="toast-progress" style="width: 100%;"></div>` : '';
    
    toast.innerHTML = `
      <svg class="toast-icon" viewBox="0 0 24 24" fill="currentColor">
        \${toastIcons[type]}
      </svg>
      <div class="toast-content">
        <div class="toast-title">\${title}</div>
        <div class="toast-message">\${message}</div>
      </div>
      <button class="toast-close" aria-label="Close notification">
        <svg viewBox="0 0 24 24" fill="currentColor">
          <path d="M19 6.41L17.59 5 12 10.59 6.41 5 5 6.41 10.59 12 5 17.59 6.41 19 12 13.41 17.59 19 19 17.59 13.41 12z"/>
        </svg>
      </button>
      \${progressBar}
    `;
    
    return { toast, toastId };
  }
  
  // Show toast
  function showToast(type, customTitle = null, customMessage = null, customDuration = null) {
    const position = positionSelect.value;
    const duration = customDuration !== null ? customDuration : parseInt(durationSelect.value);
    const enableAnimation = animationEnabled.checked;
    const enableSound = soundEnabled.checked;
    
    // Get random message for type
    const messages = toastMessages[type];
    const randomMessage = messages[Math.floor(Math.random() * messages.length)];
    const title = customTitle || randomMessage.title;
    const message = customMessage || randomMessage.message;
    
    const { toast, toastId } = createToast(type, title, message, duration);
    const container = document.getElementById(`toast-\${position}`);
    
    // Add to active toasts
    activeToasts.add(toastId);
    totalShown++;
    updateStats();
    
    // Play sound if enabled
    if (enableSound) {
      playNotificationSound(type);
    }
    
    // Add animation classes
    if (enableAnimation) {
      toast.classList.add('toast-enter');
    }
    
    container.appendChild(toast);
    
    // Trigger enter animation
    if (enableAnimation) {
      requestAnimationFrame(() => {
        toast.classList.remove('toast-enter');
        toast.classList.add('toast-enter-active');
      });
    }
    
    // Set up close button
    const closeBtn = toast.querySelector('.toast-close');
    closeBtn.addEventListener('click', () => {
      dismissToast(toastId);
    });
    
    // Set up auto-dismiss
    if (duration > 0) {
      const progressBar = toast.querySelector('.toast-progress');
      if (progressBar) {
        progressBar.style.transition = `width \${duration}ms linear`;
        requestAnimationFrame(() => {
          progressBar.style.width = '0%';
        });
      }
      
      setTimeout(() => {
        if (activeToasts.has(toastId)) {
          autoDismissed++;
          dismissToast(toastId);
        }
      }, duration);
    }
    
    // Add hover pause for auto-dismiss
    if (duration > 0) {
      let remainingTime = duration;
      let startTime = Date.now();
      let timeoutId;
      
      const pauseTimer = () => {
        clearTimeout(timeoutId);
        remainingTime -= Date.now() - startTime;
        const progressBar = toast.querySelector('.toast-progress');
        if (progressBar) {
          progressBar.style.transition = 'none';
        }
      };
      
      const resumeTimer = () => {
        startTime = Date.now();
        const progressBar = toast.querySelector('.toast-progress');
        if (progressBar) {
          progressBar.style.transition = `width \${remainingTime}ms linear`;
          progressBar.style.width = '0%';
        }
        
        timeoutId = setTimeout(() => {
          if (activeToasts.has(toastId)) {
            autoDismissed++;
            dismissToast(toastId);
          }
        }, remainingTime);
      };
      
      toast.addEventListener('mouseenter', pauseTimer);
      toast.addEventListener('mouseleave', resumeTimer);
    }
  }
  
  // Dismiss toast
  function dismissToast(toastId) {
    const toast = document.getElementById(toastId);
    if (!toast || !activeToasts.has(toastId)) return;
    
    activeToasts.delete(toastId);
    updateStats();
    
    const enableAnimation = animationEnabled.checked;
    
    if (enableAnimation) {
      toast.classList.remove('toast-enter-active');
      toast.classList.add('toast-exit', 'toast-exit-active');
      
      setTimeout(() => {
        if (toast.parentNode) {
          toast.parentNode.removeChild(toast);
        }
      }, 300);
    } else {
      if (toast.parentNode) {
        toast.parentNode.removeChild(toast);
      }
    }
  }
  
  // Play notification sound
  function playNotificationSound(type) {
    // Create audio context for sound generation
    try {
      const audioContext = new (window.AudioContext || window.webkitAudioContext)();
      const oscillator = audioContext.createOscillator();
      const gainNode = audioContext.createGain();
      
      oscillator.connect(gainNode);
      gainNode.connect(audioContext.destination);
      
      // Different frequencies for different types
      const frequencies = {
        success: [523.25, 659.25, 783.99], // C5, E5, G5
        error: [220, 185], // A3, F#3
        warning: [440, 554.37], // A4, C#5
        info: [523.25, 659.25], // C5, E5
        loading: [440] // A4
      };
      
      const freqs = frequencies[type] || [440];
      let currentFreq = 0;
      
      function playNote() {
        if (currentFreq < freqs.length) {
          oscillator.frequency.setValueAtTime(freqs[currentFreq], audioContext.currentTime);
          gainNode.gain.setValueAtTime(0.1, audioContext.currentTime);
          gainNode.gain.exponentialRampToValueAtTime(0.01, audioContext.currentTime + 0.1);
          
          currentFreq++;
          if (currentFreq < freqs.length) {
            setTimeout(playNote, 100);
          }
        }
      }
      
      oscillator.start();
      playNote();
      oscillator.stop(audioContext.currentTime + 0.3);
    } catch (e) {
      // Fallback: no sound if audio context fails
      console.log('Audio not supported');
    }
  }
  
  // Update statistics
  function updateStats() {
    totalShownEl.textContent = totalShown;
    currentActiveEl.textContent = activeToasts.size;
    autoDismissedEl.textContent = autoDismissed;
  }
  
  // Show multiple toasts
  function showMultipleToasts() {
    const types = ['success', 'error', 'warning', 'info', 'loading'];
    types.forEach((type, index) => {
      setTimeout(() => {
        showToast(type);
      }, index * 200);
    });
  }
  
  // Clear all toasts
  function clearAllToasts() {
    const allToasts = Array.from(activeToasts);
    allToasts.forEach(toastId => {
      dismissToast(toastId);
    });
  }
  
  // Event listeners
  demoButtons.forEach(btn => {
    btn.addEventListener('click', () => {
      const type = btn.dataset.type;
      showToast(type);
    });
  });
  
  showMultipleBtn.addEventListener('click', showMultipleToasts);
  clearAllBtn.addEventListener('click', clearAllToasts);
  
  // Keyboard shortcuts
  document.addEventListener('keydown', (e) => {
    if (e.ctrlKey || e.metaKey) {
      switch (e.key) {
        case '1':
          e.preventDefault();
          showToast('success');
          break;
        case '2':
          e.preventDefault();
          showToast('error');
          break;
        case '3':
          e.preventDefault();
          showToast('warning');
          break;
        case '4':
          e.preventDefault();
          showToast('info');
          break;
        case '5':
          e.preventDefault();
          showToast('loading');
          break;
        case 'Escape':
          e.preventDefault();
          clearAllToasts();
          break;
      }
    }
  });
  
  // Initialize stats
  updateStats();
  
  // Demo: Show welcome toast
  setTimeout(() => {
    showToast('info', 'Welcome!', 'Try the different notification types above. Use Ctrl+1-5 for quick access.');
  }, 1000);
});