* {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
  margin: 0;
  padding: 0;
}

/* RTL support */
[dir="rtl"] {
  text-align: right;
}

/* Custom scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: #f1f1f1;
  border-radius: 10px;
}

::-webkit-scrollbar-thumb {
  background: #888;
  border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
  background: #555;
}

/* Chat messages animation */
#chat-messages > div {
  animation: slideIn 0.3s ease-out;
}

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

/* Smooth transitions */
button, input, textarea, select {
  transition: all 0.2s ease;
}

button:active {
  transform: scale(0.95);
}

/* Focus styles */
input:focus, textarea:focus, select:focus {
  outline: none;
}

/* Loading animation */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(0,0,0,.1);
  border-radius: 50%;
  border-top-color: #3490dc;
  animation: spin 1s ease-in-out infinite;
}

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