body {
  margin: 0;
  background: black;
  color: white;
  font-family: Arial;
}

/* Topbar */
.topbar {
  display: flex;
  justify-content: space-between;
  padding: 10px;
  align-items: center;
}

.icon-btn {
  background: none;
  border: none;
  color: white;
}

/* Chat Area */
.chat-area {
  height: calc(100vh - 210px);
  padding: 10px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

/* User bubble (right) */
.user {
  align-self: flex-end;
  background: #1a1a1a;
  padding: 10px;
  border-radius: 14px;
  max-width: 70%;
  margin: 6px;
}

/* Assistant bubble (left) */
.assistant {
  align-self: flex-start;
  background: linear-gradient(90deg, white, black);
  color: black;
  padding: 10px;
  border-radius: 14px;
  max-width: 70%;
  margin: 6px;
}

/* Thinking */
.thinking {
  animation: blink 1s infinite;
}

@keyframes blink {
  50% { opacity: 0.4; }
}

/* Input */
.input-box {
  display: flex;
  align-items: center;
  padding: 10px;
}

textarea {
  flex: 1;
  border-radius: 20px;
  border: none;
  padding: 10px;
  background: #111;
  color: white;
  resize: none;
}

/* Send zoom animation */
.send {
  transform: scale(0);
  transition: 0.3s;
}
.send.show {
  transform: scale(1);
}

/* Menu */
.menu {
  display: none;
  position: absolute;
  right: 10px;
  top: 50px;
  background: #222;
}