body {
  margin: 0;
  font-family: "Segoe UI", Arial, sans-serif;
  background: #0f141a;
  color: #f4f4f4;
}

header {
  background: #1e90ff;
  padding: 20px 0;
  text-align: center;
}

header h1 {
  margin: 0;
}

nav a {
  color: #fff;
  margin: 0 15px;
  text-decoration: none;
  font-weight: bold;
}

nav a:hover {
  text-decoration: underline;
}

section {
  padding: 40px;
  text-align: center;
}

ul {
  list-style: none;
  padding: 0;
}

li {
  padding: 5px;
}

#chat-box {
  border: 1px solid #444;
  background: #111;
  width: 80%;
  height: 200px;
  margin: 10px auto;
  overflow-y: auto;
  padding: 10px;
  border-radius: 8px;
}

#chat-input {
  width: 60%;
  padding: 8px;
  border-radius: 4px;
  border: none;
}

#send-btn {
  padding: 8px 12px;
  border: none;
  border-radius: 4px;
  background: #1e90ff;
  color: white;
  cursor: pointer;
}

#send-btn:hover {
  background: #187bcd;
}

form {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

input, textarea {
  width: 60%;
  padding: 8px;
  border-radius: 4px;
  border: 1px solid #555;
  background: #222;
  color: #fff;
}

button[type="submit"] {
  background: #1e90ff;
  border: none;
  padding: 10px 20px;
  border-radius: 4px;
  color: white;
  cursor: pointer;
}

footer {
  text-align: center;
  background: #111;
  padding: 15px;
  margin-top: 40px;
}
.message {
  background: #22262d;
  padding: 0.5rem 1rem;
  margin: 0.5rem 0;
  border-radius: 8px;
  animation: fadeIn 0.3s ease-in;
}

.message strong {
  color: #00b4ff;
}

.message .time {
  font-size: 0.8rem;
  color: #aaa;
  margin-left: 0.3rem;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(5px); }
  to { opacity: 1; transform: translateY(0); }
}