.messages {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.message {
  max-width: 85%;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: border-color 0.15s;
}

.message:hover {
  border-color: var(--accent);
}

.message.selected {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}

.message.user {
  align-self: flex-end;
  background: var(--user-bg);
}

.message.assistant {
  align-self: flex-start;
  background: var(--assistant-bg);
}

.message-role {
  font-size: 11px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.message-content {
  white-space: pre-wrap;
  word-break: break-word;
}

.message-meta {
  margin-top: 8px;
  font-size: 11px;
  color: var(--text-muted);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.composer {
  display: flex;
  gap: 8px;
  padding: 12px 20px 16px;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
  background: var(--bg);
}

.composer textarea {
  flex: 1;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px;
  resize: none;
}

.composer button {
  align-self: flex-end;
}

.composer.sending {
  opacity: 0.7;
  pointer-events: none;
}