/* Enhanced Sidebar Styles - Professional Design */

.sidebar-enhanced {
  width: 320px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  backdrop-filter: blur(20px);
  border-right: 1px solid rgba(255, 255, 255, 0.2);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-xl);
  transition: all var(--transition-slow);
  position: relative;
  overflow: hidden;
}

.sidebar-enhanced::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1));
  pointer-events: none;
}

.sidebar-enhanced.collapsed {
  width: 80px;
  padding: var(--space-4);
}

/* Enhanced Logo Section */
.sidebar-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  position: relative;
  z-index: 1;
}

.sidebar-logo.collapsed {
  justify-content: center;
  margin-bottom: var(--space-6);
}

.sidebar-logo-icon {
  width: 36px;
  height: 36px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-lg);
  box-shadow: 0 8px 16px rgba(255, 255, 255, 0.1);
  transition: all var(--transition-normal);
}

.sidebar-logo-icon:hover {
  transform: scale(1.05);
  box-shadow: 0 12px 24px rgba(255, 255, 255, 0.2);
}

.sidebar-logo-text {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: white;
  transition: opacity var(--transition-normal);
}

.sidebar-enhanced.collapsed .sidebar-logo-text {
  opacity: 0;
  width: 0;
  overflow: hidden;
}

/* Enhanced Navigation Sections */
.sidebar-nav-section {
  margin-bottom: var(--space-6);
  position: relative;
  z-index: 1;
}

.sidebar-nav-title {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: rgba(255, 255, 255, 0.7);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--space-2);
  padding: 0 var(--space-4);
  transition: opacity var(--transition-normal);
}

.sidebar-enhanced.collapsed .sidebar-nav-title {
  opacity: 0;
  height: 0;
  margin: 0;
  padding: 0;
  overflow: hidden;
}

/* Enhanced Menu Items */
.sidebar-menu-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  margin-bottom: var(--space-1);
  border-radius: var(--radius-lg);
  cursor: pointer;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: rgba(255, 255, 255, 0.8);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.sidebar-menu-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  transition: left var(--transition-slow);
}

.sidebar-menu-item:hover::before {
  left: 100%;
}

.sidebar-menu-item:hover {
  background: rgba(255, 255, 255, 0.1);
  color: white;
  transform: translateX(4px);
  box-shadow: 0 4px 12px rgba(255, 255, 255, 0.1);
}

.sidebar-menu-item.active {
  background: rgba(255, 255, 255, 0.2);
  color: white;
  box-shadow: 0 4px 12px rgba(255, 255, 255, 0.1);
  transform: translateX(4px);
}

.sidebar-menu-item.collapsed {
  justify-content: center;
  padding: var(--space-3);
}

.sidebar-menu-item.collapsed .sidebar-menu-item-text {
  opacity: 0;
  width: 0;
  overflow: hidden;
}

.sidebar-menu-item-icon {
  width: 20px;
  height: 20px;
  opacity: 0.7;
  transition: all var(--transition-normal);
  flex-shrink: 0;
}

.sidebar-menu-item:hover .sidebar-menu-item-icon {
  opacity: 1;
  transform: scale(1.1);
}

.sidebar-menu-item-text {
  transition: all var(--transition-normal);
  white-space: nowrap;
}

.sidebar-menu-item-badge {
  background: var(--success-500);
  color: white;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  padding: 2px 6px;
  border-radius: var(--radius-full);
  min-width: 16px;
  text-align: center;
  margin-left: auto;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.7;
  }
}

/* Enhanced Status Indicators */
.sidebar-status-indicator {
  width: 8px;
  height: 8px;
  background: var(--success-500);
  border-radius: 50%;
  margin-left: auto;
  animation: pulse 2s infinite;
  box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.3);
}

/* Enhanced Upgrade Card */
.sidebar-upgrade-card {
  background: linear-gradient(135deg, #1e293b, #334155);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  margin-top: auto;
  text-align: center;
  color: white;
  position: relative;
  z-index: 1;
  overflow: hidden;
  transition: all var(--transition-normal);
}

.sidebar-upgrade-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), transparent);
  pointer-events: none;
}

.sidebar-upgrade-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

.sidebar-enhanced.collapsed .sidebar-upgrade-card {
  display: none;
}

.sidebar-upgrade-title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-2);
  position: relative;
  z-index: 1;
}

.sidebar-upgrade-text {
  font-size: var(--font-size-xs);
  opacity: 0.8;
  margin-bottom: var(--space-4);
  line-height: var(--line-height-relaxed);
  position: relative;
  z-index: 1;
}

.sidebar-upgrade-btn {
  background: rgba(255, 255, 255, 0.2);
  border: none;
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-4);
  color: white;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  z-index: 1;
}

.sidebar-upgrade-btn:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

/* Enhanced Chat Items */
.sidebar-chat-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  margin-bottom: var(--space-1);
  border-radius: var(--radius-lg);
  cursor: pointer;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-normal);
  color: rgba(255, 255, 255, 0.8);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sidebar-chat-item:hover {
  background: rgba(255, 255, 255, 0.1);
  color: white;
  transform: translateX(4px);
}

.sidebar-chat-item.active {
  background: rgba(255, 255, 255, 0.2);
  color: white;
  box-shadow: 0 4px 12px rgba(255, 255, 255, 0.1);
}

.sidebar-chat-item.collapsed {
  justify-content: center;
  padding: var(--space-3);
}

.sidebar-chat-item.collapsed .sidebar-chat-item-text {
  opacity: 0;
  width: 0;
  overflow: hidden;
}

.sidebar-chat-item-text {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: all var(--transition-normal);
}

/* Enhanced User Profile */
.sidebar-user-profile {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  margin-top: auto;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  position: relative;
  z-index: 1;
}

.sidebar-enhanced.collapsed .sidebar-user-profile {
  justify-content: center;
  padding: var(--space-3);
}

.sidebar-user-avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, #f59e0b, #d97706);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.sidebar-user-avatar:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.sidebar-user-info {
  flex: 1;
  transition: all var(--transition-normal);
}

.sidebar-enhanced.collapsed .sidebar-user-info {
  opacity: 0;
  width: 0;
  overflow: hidden;
}

.sidebar-user-name {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: white;
  margin-bottom: 2px;
}

.sidebar-user-role {
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.7);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Enhanced Responsive Design */
@media (max-width: 1024px) {
  .sidebar-enhanced {
    width: 280px;
  }
  
  .sidebar-enhanced.collapsed {
    width: 70px;
  }
}

@media (max-width: 768px) {
  .sidebar-enhanced {
    position: fixed;
    top: 0;
    left: -100%;
    height: 100vh;
    z-index: var(--z-modal);
    transition: left var(--transition-slow);
  }
  
  .sidebar-enhanced.open {
    left: 0;
  }
  
  .sidebar-enhanced.collapsed {
    left: -100%;
  }
}

/* Enhanced Animation Classes */
.sidebar-fade-in {
  animation: sidebarFadeIn var(--transition-slow) ease-out;
}

.sidebar-slide-in {
  animation: sidebarSlideIn var(--transition-slow) ease-out;
}

@keyframes sidebarFadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes sidebarSlideIn {
  from {
    transform: translateX(-100%);
  }
  to {
    transform: translateX(0);
  }
}

/* Enhanced Focus States */
.sidebar-menu-item:focus,
.sidebar-chat-item:focus,
.sidebar-upgrade-btn:focus {
  outline: 2px solid rgba(255, 255, 255, 0.5);
  outline-offset: 2px;
}

/* Enhanced Loading States */
.sidebar-loading {
  opacity: 0.6;
  pointer-events: none;
}

.sidebar-loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top: 2px solid white;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}