body {
  margin: 0;
  font-family: 'Poppins', sans-serif;
  background: linear-gradient(to bottom right, #ffe3ec, #e0f7ff);
  color: #333;
}
.container {
  padding: 2rem;
  max-width: 800px;
  margin: auto;
}
h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}
.about {
  margin-top: 2rem;
}
.chat-icon {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: #3b82f6;
  color: white;
  padding: 0.8rem;
  border-radius: 50%;
  font-size: 1.5rem;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
  cursor: pointer;
  z-index: 10;
}
.chat-popup {
  position: fixed;
  bottom: 80px;
  right: 20px;
  width: 300px;
  background: white;
  border-radius: 12px;
  box-shadow: 0 10px 20px rgba(0,0,0,0.15);
  display: none;
  flex-direction: column;
  z-index: 20;
}
.chat-header {
  background: #3b82f6;
  color: white;
  padding: 0.75rem 1rem;
  font-weight: bold;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top-left-radius: 12px;
  border-top-right-radius: 12px;
}
.chat-body {
  padding: 1rem;
  height: 150px;
  overflow-y: auto;
  font-size: 0.95rem;
}
.chat-popup input {
  border: none;
  border-top: 1px solid #ddd;
  padding: 0.75rem 1rem;
  font-size: 1rem;
  border-bottom-left-radius: 12px;
  border-bottom-right-radius: 12px;
}
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 1s ease forwards;
}
.delay {
  animation-delay: 0.5s;
}
.delay-more {
  animation-delay: 1s;
}
@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}