* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: #0f172a;
  color: #e2e8f0;
  font-family: Arial, sans-serif;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 24px;
}

.hint {
  color: #94a3b8;
}

.login-form {
  display: flex;
  gap: 10px;
  margin: 12px 0;
}

#msLoginButton {
  border: none;
  border-radius: 8px;
  background: #2563eb;
  color: #fff;
  padding: 10px 16px;
  cursor: pointer;
}

#msLoginButton:hover {
  background: #1d4ed8;
}

.login-form input {
  flex: 1;
  border-radius: 8px;
  border: 1px solid #334155;
  background: #111827;
  color: #e2e8f0;
  padding: 10px;
}

.login-form button {
  border: none;
  border-radius: 8px;
  background: #0ea5e9;
  color: #fff;
  padding: 10px 16px;
  cursor: pointer;
}

.login-form button:hover {
  background: #0284c7;
}

.chat-window {
  height: 420px;
  overflow-y: auto;
  border: 1px solid #334155;
  border-radius: 10px;
  padding: 16px;
  margin: 16px 0;
  background: #111827;
}

.message {
  max-width: 80%;
  border-radius: 10px;
  padding: 10px 12px;
  margin: 8px 0;
  white-space: pre-wrap;
}

.message.user {
  margin-left: auto;
  background: #0369a1;
}

.message.assistant {
  margin-right: auto;
  background: #1f2937;
}

.chat-form {
  display: flex;
  gap: 10px;
}

.chat-form input {
  flex: 1;
  border-radius: 8px;
  border: 1px solid #334155;
  background: #111827;
  color: #e2e8f0;
  padding: 10px;
}

.chat-form button {
  border: none;
  border-radius: 8px;
  background: #4f46e5;
  color: #fff;
  padding: 10px 16px;
  cursor: pointer;
}

.chat-form button:hover {
  background: #4338ca;
}

.chat-form button:disabled,
.chat-form input:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.upload-panel {
  display: flex;
  gap: 10px;
  align-items: center;
}

#attachmentInput {
  flex: 1;
  border-radius: 8px;
  border: 1px solid #334155;
  background: #111827;
  color: #e2e8f0;
  padding: 8px;
}

#uploadButton {
  border: none;
  border-radius: 8px;
  background: #0ea5e9;
  color: #fff;
  padding: 10px 16px;
  cursor: pointer;
}

#uploadButton:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.asset-list {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin: 8px 0 14px;
}

.asset-chip {
  background: #1e293b;
  border: 1px solid #334155;
  border-radius: 999px;
  padding: 6px 10px;
  font-size: 12px;
}