public/styles.css

/* ChatGPT-style CSS for AI Chat Application */

/* Import Inter font for better typography */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

/* Root variables for consistent theming */
:root {
  --chat-gray: #f7f7f8;
  --chat-dark: #343541;
  --sidebar-light: #ffffff;
  --sidebar-dark: #202123;
  --user-msg: #f7f7f8;
  --assistant-msg: #ffffff;
  --border-light: #e5e7eb;
  --border-dark: #4b5563;
}

/* Base styles */
* {
  box-sizing: border-box;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  margin: 0;
  padding: 0;
  height: 100vh;
  overflow: hidden;
}

/* Smooth transitions */
.transition-all {
  transition: all 0.2s ease-in-out;
}

/* Custom scrollbar styling */
.custom-scrollbar {
  scrollbar-width: thin;
  scrollbar-color: #cbd5e1 transparent;
}

.custom-scrollbar::-webkit-scrollbar {
  width: 6px;
}

.custom-scrollbar::-webkit-scrollbar-track {
  background: transparent;
}

.custom-scrollbar::-webkit-scrollbar-thumb {
  background-color: #cbd5e1;
  border-radius: 3px;
}

.custom-scrollbar::-webkit-scrollbar-thumb:hover {
  background-color: #94a3b8;
}

/* Dark mode scrollbar */
.dark .custom-scrollbar {
  scrollbar-color: #4b5563 transparent;
}

.dark .custom-scrollbar::-webkit-scrollbar-thumb {
  background-color: #4b5563;
}

.dark .custom-scrollbar::-webkit-scrollbar-thumb:hover {
  background-color: #6b7280;
}

/* Sidebar styling */
#sidebar {
  z-index: 50;
}

/* Mobile sidebar overlay */
@media (max-width: 768px) {
  #sidebar {
    position: fixed;
    left: 0;
    top: 0;
    height: 100vh;
    transform: translateX(-100%);
    z-index: 50;
  }
  
  #sidebar.open {
    transform: translateX(0);
  }
}

/* Message styling */
.message {
  display: flex;
  padding: 1.5rem 1rem;
  gap: 1rem;
  border-bottom: 1px solid var(--border-light);
  transition: background-color 0.1s ease;
}

.dark .message {
  border-bottom-color: var(--border-dark);
}

.message.user {
  background-color: var(--user-msg);
}

.dark .message.user {
  background-color: #40414f;
}

.message.assistant {
  background-color: var(--assistant-msg);
}

.dark .message.assistant {
  background-color: var(--chat-dark);
}

/* Avatar styling */
.avatar {
  width: 2rem;
  height: 2rem;
  border-radius: 0.125rem;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.875rem;
}

.avatar.user {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
}

.avatar.assistant {
  background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  color: white;
}

/* Message content */
.message-content {
  flex: 1;
  min-width: 0;
  line-height: 1.6;
}

.message-content pre {
  background-color: #f3f4f6;
  border-radius: 0.375rem;
  padding: 0.75rem;
  overflow-x: auto;
  margin: 0.5rem 0;
}

.dark .message-content pre {
  background-color: #374151;
}

.message-content code {
  background-color: #f3f4f6;
  padding: 0.125rem 0.25rem;
  border-radius: 0.25rem;
  font-size: 0.875rem;
}

.dark .message-content code {
  background-color: #374151;
}

/* Auto-resize textarea */
#user-input {
  resize: none;
  transition: border-color 0.2s ease;
}

#user-input:focus {
  border-color: #3b82f6 !important;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Send button states */
#send-button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

#send-button:not(:disabled):hover {
  background-color: #2563eb;
  transform: translateY(-1px);
}

/* Loading animation */
.typing-indicator {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  color: #6b7280;
}

.typing-dot {
  width: 0.5rem;
  height: 0.5rem;
  background-color: currentColor;
  border-radius: 50%;
  animation: typing 1.4s infinite ease-in-out;
}

.typing-dot:nth-child(1) {
  animation-delay: -0.32s;
}

.typing-dot:nth-child(2) {
  animation-delay: -0.16s;
}

@keyframes typing {
  0%, 80%, 100% {
    transform: scale(0.8);
    opacity: 0.5;
  }
  40% {
    transform: scale(1);
    opacity: 1;
  }
}

/* Chat history items */
.chat-history-item {
  padding: 0.75rem;
  border-radius: 0.5rem;
  cursor: pointer;
  transition: background-color 0.1s ease;
  font-size: 0.875rem;
  color: #374151;
  border: 1px solid transparent;
}

.dark .chat-history-item {
  color: #d1d5db;
}

.chat-history-item:hover {
  background-color: #f3f4f6;
}

.dark .chat-history-item:hover {
  background-color: #374151;
}

.chat-history-item.active {
  background-color: #e5e7eb;
  border-color: #d1d5db;
}

.dark .chat-history-item.active {
  background-color: #4b5563;
  border-color: #6b7280;
}

/* Welcome screen */
.welcome-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  padding: 2rem;
  text-align: center;
}

.welcome-title {
  font-size: 2rem;
  font-weight: 600;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.welcome-subtitle {
  color: #6b7280;
  margin-bottom: 2rem;
  max-width: 32rem;
}

.dark .welcome-subtitle {
  color: #9ca3af;
}

/* Responsive design */
@media (max-width: 768px) {
  .message {
    padding: 1rem 0.75rem;
  }
  
  .avatar {
    width: 1.75rem;
    height: 1.75rem;
  }
  
  .welcome-title {
    font-size: 1.5rem;
  }
}

/* Focus ring removal for better custom styling */
.focus\:outline-none:focus {
  outline: none;
}

/* Custom button hover effects */
.hover-lift:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* Dark mode toggle improvements */
.dark-mode-transition {
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

  .scrollbar-thin{scrollbar-width:thin} .scrollbar-thin::-webkit-scrollbar{height:8px;width:8px} .scrollbar-thin::-webkit-scrollbar-thumb{border-radius:9999px;background-color:#c7c7d0} .scrollbar-thin::-webkit-scrollbar-track{background-color:transparent}
  
  /* Code block styles */
  .code-block {
    font-family: 'Fira Code', 'Monaco', 'Cascadia Code', 'Roboto Mono', monospace;
  }
  
  .code-content {
    line-height: 1.5;
    font-size: 0.875rem;
  }
  
  .code-content code {
    font-family: inherit;
    background: none !important;
    padding: 0 !important;
    border-radius: 0 !important;
  }
  
  /* Copy button hover effect */
  .copy-code-btn {
    transition: all 0.2s ease;
  }
  
  .copy-code-btn:hover {
    transform: scale(1.1);
  }