/* Base Styling */
body {
  margin: 0;
  padding: 0;
  font-family: 'Segoe UI', sans-serif;
  background: linear-gradient(135deg, #1e3c72, #2a5298, #ff6ec4);
  background-size: 200% 200%;
  animation: gradientShift 15s ease infinite;
  color: #fff;
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

header {
  text-align: center;
  padding: 2rem;
  backdrop-filter: blur(8px);
}

header h1 {
  font-size: 3rem;
  margin: 0;
  letter-spacing: 1px;
}

header p {
  font-size: 1.2rem;
  margin-top: 0.5rem;
  color: #e0e0ff;
}

main {
  padding: 2rem;
  display: flex;
  flex-direction: column;
  height: calc(100vh - 200px); /* Adjust for header/footer */
  box-sizing: border-box;
}

.chat-log {
  flex: 1;
  overflow-y: auto;
  padding: 1rem;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  margin-bottom: 1rem;
  display: flex;
  flex-direction: column;
}

.user, .bot {
  margin: 0.5rem 0;
  padding: 0.8rem;
  border-radius: 8px;
  max-width: 80%;
  word-wrap: break-word;
}

.user {
  background-color: #2a5298;
  align-self: flex-end;
  text-align: right;
}

.bot {
  background-color: #ff6ec4;
  align-self: flex-start;
  text-align: left;
}

.input-area {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

input[type="text"] {
  flex: 1;
  padding: 0.8rem;
  border-radius: 5px;
  border: none;
  font-size: 1rem;
  min-width: 200px;
}

button {
  padding: 0.8rem 1.2rem;
  background-color: #2a5298;
  color: #fff;
  border: none;
  border-radius: 5px;
  font-weight: bold;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

button:hover {
  background-color: #ff6ec4;
}

footer {
  text-align: center;
  padding: 1rem;
  background-color: rgba(0, 0, 0, 0.4);
  color: #ccc;
}

/* Responsive Tweaks */
@media (max-width: 600px) {
  header h1 {
    font-size: 2rem;
  }

  header p {
    font-size: 1rem;
  }

  input[type="text"] {
    font-size: 0.9rem;
  }

  button {
    font-size: 0.9rem;
    padding: 0.6rem 1rem;
  }

  .user, .bot {
    font-size: 0.9rem;
  }
}