Horizontal Tab Menu

.tab-menu-demo {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  padding: 30px;
  border-radius: 16px;
  min-height: 320px;
}

.tab-container {
  background: white;
  border-radius: 12px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
  overflow: hidden;
}

.tab-nav {
  position: relative;
  background: #f8fafc;
  border-bottom: 1px solid #e2e8f0;
}

.tab-list {
  display: flex;
  position: relative;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.tab-list::-webkit-scrollbar {
  display: none;
}

.tab-button {
  background: none;
  border: none;
  padding: 16px 24px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
  color: #64748b;
  transition: all 0.3s ease;
  white-space: nowrap;
  position: relative;
  min-width: fit-content;
}

.tab-button:hover {
  color: #3b82f6;
  background: rgba(59, 130, 246, 0.05);
}

.tab-button.active {
  color: #3b82f6;
  background: rgba(59, 130, 246, 0.1);
}

.tab-icon {
  font-size: 16px;
}

.tab-text {
  font-weight: 600;
}

.tab-indicator {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, #3b82f6 0%, #1d4ed8 100%);
  border-radius: 3px 3px 0 0;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  width: 0;
}

.tab-content {
  position: relative;
  min-height: 250px;
}

.tab-panel {
  display: none;
  padding: 30px;
  animation: fadeIn 0.3s ease-in-out;
}

.tab-panel.active {
  display: block;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.panel-content h3 {
  margin: 0 0 16px 0;
  color: #1e293b;
  font-size: 20px;
  font-weight: 700;
}

.panel-content p {
  color: #64748b;
  line-height: 1.6;
  margin: 0 0 24px 0;
}

/* Overview Panel Styles */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 16px;
}

.stat-card {
  background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
  padding: 20px;
  border-radius: 12px;
  text-align: center;
  border: 1px solid #e2e8f0;
}

.stat-number {
  font-size: 24px;
  font-weight: 700;
  color: #1e293b;
  margin-bottom: 4px;
}

.stat-label {
  font-size: 12px;
  color: #64748b;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Analytics Panel Styles */
.chart-placeholder {
  display: flex;
  align-items: end;
  gap: 12px;
  height: 120px;
  padding: 20px;
  background: #f8fafc;
  border-radius: 12px;
  border: 1px solid #e2e8f0;
}

.chart-bar {
  flex: 1;
  background: linear-gradient(180deg, #3b82f6 0%, #1d4ed8 100%);
  border-radius: 4px 4px 0 0;
  min-height: 20px;
  transition: all 0.3s ease;
}

.chart-bar:hover {
  transform: scaleY(1.1);
  filter: brightness(1.1);
}

/* Reports Panel Styles */
.report-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.report-item {
  padding: 16px;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  color: #374151;
  transition: all 0.3s ease;
  cursor: pointer;
}

.report-item:hover {
  background: #f1f5f9;
  border-color: #3b82f6;
  transform: translateX(4px);
}

/* Settings Panel Styles */
.settings-grid {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.setting-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
}

.toggle-switch {
  width: 44px;
  height: 24px;
  background: #e2e8f0;
  border-radius: 12px;
  position: relative;
  cursor: pointer;
  transition: all 0.3s ease;
}

.toggle-switch::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  background: white;
  border-radius: 50%;
  transition: all 0.3s ease;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.toggle-switch.active {
  background: #3b82f6;
}

.toggle-switch.active::after {
  transform: translateX(20px);
}

/* Team Panel Styles */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 16px;
}

.team-member {
  text-align: center;
  padding: 20px;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  transition: all 0.3s ease;
}

.team-member:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.member-avatar {
  font-size: 32px;
  margin-bottom: 8px;
}

.member-name {
  font-weight: 600;
  color: #1e293b;
  margin-bottom: 4px;
}

.member-role {
  font-size: 12px;
  color: #64748b;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Responsive */
@media (max-width: 768px) {
  .tab-menu-demo {
    padding: 16px;
  }
  
  .tab-panel {
    padding: 20px;
  }
  
  .tab-button {
    padding: 12px 16px;
    font-size: 13px;
  }
  
  .stats-grid,
  .team-grid {
    grid-template-columns: 1fr;
  }
}

document.addEventListener('DOMContentLoaded', function() {
  const tabButtons = document.querySelectorAll('.tab-button');
  const tabPanels = document.querySelectorAll('.tab-panel');
  const tabIndicator = document.querySelector('.tab-indicator');
  const toggleSwitches = document.querySelectorAll('.toggle-switch');
  
  // Initialize tab indicator position
  updateTabIndicator();
  
  // Tab switching functionality
  tabButtons.forEach(button => {
    button.addEventListener('click', function() {
      const targetTab = this.getAttribute('data-tab');
      
      // Remove active class from all buttons and panels
      tabButtons.forEach(btn => {
        btn.classList.remove('active');
        btn.setAttribute('aria-selected', 'false');
      });
      
      tabPanels.forEach(panel => {
        panel.classList.remove('active');
      });
      
      // Add active class to clicked button and corresponding panel
      this.classList.add('active');
      this.setAttribute('aria-selected', 'true');
      
      const targetPanel = document.getElementById(targetTab);
      if (targetPanel) {
        targetPanel.classList.add('active');
      }
      
      // Update indicator position
      updateTabIndicator();
      
      // Show feedback
      const tabText = this.querySelector('.tab-text').textContent;
      showFeedback(`Switched to: ${tabText}`);
    });
  });
  
  // Update tab indicator position
  function updateTabIndicator() {
    const activeButton = document.querySelector('.tab-button.active');
    if (activeButton && tabIndicator) {
      const buttonRect = activeButton.getBoundingClientRect();
      const containerRect = activeButton.parentElement.getBoundingClientRect();
      
      tabIndicator.style.left = (activeButton.offsetLeft) + 'px';
      tabIndicator.style.width = activeButton.offsetWidth + 'px';
    }
  }
  
  // Toggle switches functionality
  toggleSwitches.forEach(toggle => {
    toggle.addEventListener('click', function() {
      this.classList.toggle('active');
      const isActive = this.classList.contains('active');
      const settingName = this.previousElementSibling.textContent.trim();
      showFeedback(`${settingName}: ${isActive ? 'Enabled' : 'Disabled'}`);
    });
  });
  
  // Report item interactions
  const reportItems = document.querySelectorAll('.report-item');
  reportItems.forEach(item => {
    item.addEventListener('click', function() {
      const reportName = this.textContent.trim();
      showFeedback(`Opening: ${reportName}`);
    });
  });
  
  // Team member interactions
  const teamMembers = document.querySelectorAll('.team-member');
  teamMembers.forEach(member => {
    member.addEventListener('click', function() {
      const memberName = this.querySelector('.member-name').textContent;
      showFeedback(`Viewing profile: ${memberName}`);
    });
  });
  
  // Chart bar interactions
  const chartBars = document.querySelectorAll('.chart-bar');
  chartBars.forEach((bar, index) => {
    bar.addEventListener('click', function() {
      showFeedback(`Chart data point ${index + 1} selected`);
    });
  });
  
  // Stat card interactions
  const statCards = document.querySelectorAll('.stat-card');
  statCards.forEach(card => {
    card.addEventListener('click', function() {
      const statLabel = this.querySelector('.stat-label').textContent;
      showFeedback(`Viewing details: ${statLabel}`);
    });
  });
  
  // Handle window resize for indicator
  window.addEventListener('resize', updateTabIndicator);
  
  // Keyboard navigation
  document.addEventListener('keydown', function(e) {
    if (e.key === 'ArrowLeft' || e.key === 'ArrowRight') {
      const activeButton = document.querySelector('.tab-button.active');
      const buttons = Array.from(tabButtons);
      const currentIndex = buttons.indexOf(activeButton);
      
      let newIndex;
      if (e.key === 'ArrowLeft') {
        newIndex = currentIndex > 0 ? currentIndex - 1 : buttons.length - 1;
      } else {
        newIndex = currentIndex < buttons.length - 1 ? currentIndex + 1 : 0;
      }
      
      buttons[newIndex].click();
      buttons[newIndex].focus();
    }
  });
  
  // Feedback function
  function showFeedback(message) {
    const existing = document.querySelector('.demo-feedback');
    if (existing) existing.remove();
    
    const feedback = document.createElement('div');
    feedback.className = 'demo-feedback';
    feedback.textContent = message;
    feedback.style.cssText = `
      position: fixed;
      top: 20px;
      right: 20px;
      background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
      color: white;
      padding: 12px 20px;
      border-radius: 8px;
      font-size: 14px;
      font-weight: 500;
      z-index: 10001;
      box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
      transform: translateX(100%);
      transition: transform 0.3s ease;
    `;
    
    document.body.appendChild(feedback);
    
    requestAnimationFrame(() => {
      feedback.style.transform = 'translateX(0)';
    });
    
    setTimeout(() => {
      feedback.style.transform = 'translateX(100%)';
      setTimeout(() => feedback.remove(), 300);
    }, 2500);
  }
  
  // Initial feedback
  setTimeout(() => {
    showFeedback('Try switching between tabs!');
  }, 1000);
});