* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.chat-container {
  width: 100%;
  max-width: 800px;
  height: 600px;
  background: white;
  border-radius: 20px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.chat-header {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.bot-info {
  display: flex;
  align-items: center;
  gap: 15px;
}

.bot-avatar {
  width: 50px;
  height: 50px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
}

.bot-details h2 {
  font-size: 20px;
  margin-bottom: 5px;
}

.status {
  font-size: 14px;
  opacity: 0.9;
}

.status.online::before {
  content: "●";
  color: #4ade80;
  margin-right: 5px;
}

.header-buttons {
  display: flex;
  gap: 10px;
}

.clear-chat,
.reset-chat,
.about-button {
  background: rgba(255, 255, 255, 0.2);
  border: none;
  color: white;
  padding: 10px;
  border-radius: 50%;
  cursor: pointer;
  transition: background 0.3s ease;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.clear-chat:hover,
.reset-chat:hover {
  background: rgba(255, 255, 255, 0.3);
}

.reset-chat {
  background: rgba(255, 255, 255, 0.15);
}

.reset-chat:hover {
  background: rgba(255, 100, 100, 0.3);
}

.chat-messages {
  flex: 1;
  padding: 20px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.message {
  display: flex;
  gap: 12px;
  max-width: 80%;
  animation: fadeIn 0.3s ease;
}

.user-message {
  align-self: flex-end;
  flex-direction: row-reverse;
}

.message-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

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

.user-message .message-avatar {
  background: #f3f4f6;
  color: #6b7280;
}

.message-content {
  background: #f8fafc;
  padding: 12px 16px;
  border-radius: 18px;
  position: relative;
}

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

.message-content p {
  margin: 0;
  line-height: 1.5;
}

.message-time {
  font-size: 12px;
  opacity: 0.7;
  margin-top: 5px;
  display: block;
}

.typing-indicator {
  display: flex;
  gap: 12px;
  max-width: 80%;
  animation: fadeIn 0.3s ease;
}

.typing-dots {
  background: #f8fafc;
  padding: 12px 16px;
  border-radius: 18px;
  display: flex;
  gap: 4px;
  align-items: center;
}

.typing-dots span {
  width: 8px;
  height: 8px;
  background: #9ca3af;
  border-radius: 50%;
  animation: typing 1.4s infinite ease-in-out;
}

.typing-dots span:nth-child(2) {
  animation-delay: 0.2s;
}

.typing-dots span:nth-child(3) {
  animation-delay: 0.4s;
}

/* Enhanced typing animation */
@keyframes typing {
  0%,
  60%,
  100% {
    transform: translateY(0);
    opacity: 0.4;
  }
  30% {
    transform: translateY(-10px);
    opacity: 1;
  }
}

.chat-input-container {
  padding: 20px;
  background: #f8fafc;
  border-top: 1px solid #e5e7eb;
}

.chat-input-form {
  display: flex;
  gap: 10px;
  align-items: center;
}

#messageInput {
  flex: 1;
  padding: 12px 16px;
  border: 2px solid #e5e7eb;
  border-radius: 25px;
  font-size: 16px;
  outline: none;
  transition: border-color 0.3s ease;
}

#messageInput:focus {
  border-color: #667eea;
}

.send-button {
  width: 45px;
  height: 45px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border: none;
  border-radius: 50%;
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s ease;
}

.send-button:hover {
  transform: scale(1.05);
}

.send-button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.connection-status {
  position: fixed;
  top: 20px;
  right: 20px;
  background: #10b981;
  color: white;
  padding: 8px 12px;
  border-radius: 20px;
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 5px;
  z-index: 1000;
}

.connection-status.disconnected {
  background: #ef4444;
}

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

/* Smooth message appearance */
.message {
  opacity: 0;
  animation: messageAppear 0.3s ease forwards;
}

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

/* Responsive Design */
@media (max-width: 768px) {
  body {
    padding: 10px;
  }

  .chat-container {
    height: calc(100vh - 20px);
    border-radius: 15px;
  }

  .chat-header {
    padding: 15px;
  }

  .bot-details h2 {
    font-size: 18px;
  }

  .message {
    max-width: 90%;
  }

  .chat-messages {
    padding: 15px;
  }

  .chat-input-container {
    padding: 15px;
  }
}

/* Scrollbar Styling */
.chat-messages::-webkit-scrollbar {
  width: 6px;
}

.chat-messages::-webkit-scrollbar-track {
  background: #f1f1f1;
}

.chat-messages::-webkit-scrollbar-thumb {
  background: #c1c1c1;
  border-radius: 3px;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
  background: #a8a8a8;
}

/* Modal Styles */
.modal-overlay {
  position: fixed;
  z-index: 2000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-content {
  background-color: #fefefe;
  margin: auto;
  padding: 20px 30px;
  border: 1px solid #888;
  width: 90%;
  max-width: 500px;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
  animation: modal-fade-in 0.3s ease-out;
  position: relative;
}

.modal-close-button {
  color: #aaa;
  position: absolute;
  top: 10px;
  right: 15px;
  font-size: 28px;
  font-weight: bold;
}

.modal-close-button:hover,
.modal-close-button:focus {
  color: black;
  text-decoration: none;
  cursor: pointer;
}

.modal-content h3 {
  margin-top: 0;
  border-bottom: 1px solid #eee;
  padding-bottom: 10px;
}

.tech-stack-list {
  list-style-type: none;
  padding: 0;
  font-size: 14px;
}

.tech-stack-list li {
  margin-bottom: 8px;
}

.copyright {
  margin-top: 20px;
  text-align: center;
  font-size: 12px;
  color: #888;
}

@keyframes modal-fade-in {
  from {
    transform: scale(0.95);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}