.cwam-wlc {
  --cwam-wlc-bg: #f4f6f8;
  --cwam-wlc-card: #ffffff;
  --cwam-wlc-border: #e5e7eb;
  --cwam-wlc-text: #111827;
  --cwam-wlc-muted: #6b7280;
  --cwam-wlc-accent: #2563eb;
  --cwam-wlc-accent-hover: #1d4ed8;
  --cwam-wlc-bot: #eef2ff;
  --cwam-wlc-user: #dbeafe;
  --cwam-wlc-danger: #b91c1c;
  max-width: 640px;
  margin: 1.5rem auto;
  padding: 1rem 1rem 1.25rem;
  background: var(--cwam-wlc-card);
  border: 1px solid var(--cwam-wlc-border);
  border-radius: 14px;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
  color: var(--cwam-wlc-text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  box-sizing: border-box;
}
.cwam-wlc *, .cwam-wlc *::before, .cwam-wlc *::after { box-sizing: border-box; }
.cwam-wlc__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.85rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--cwam-wlc-border);
}
.cwam-wlc__title {
  font-weight: 650;
  font-size: 1.05rem;
  letter-spacing: 0.01em;
}
.cwam-wlc__logout {
  border: 1px solid var(--cwam-wlc-border);
  background: #fff;
  color: var(--cwam-wlc-muted);
  border-radius: 999px;
  padding: 0.3rem 0.75rem;
  font-size: 0.85rem;
  cursor: pointer;
}
.cwam-wlc__logout:hover { color: var(--cwam-wlc-text); border-color: #cbd5e1; }
.cwam-wlc__hint {
  margin: 0 0 0.75rem;
  color: var(--cwam-wlc-muted);
  font-size: 0.92rem;
}
.cwam-wlc__login,
.cwam-wlc__composer {
  display: flex;
  gap: 0.5rem;
  align-items: stretch;
}
.cwam-wlc__login input,
.cwam-wlc__composer input {
  flex: 1;
  min-width: 0;
  border: 1px solid var(--cwam-wlc-border);
  border-radius: 10px;
  padding: 0.7rem 0.85rem;
  font-size: 0.98rem;
  background: #fff;
  color: var(--cwam-wlc-text);
}
.cwam-wlc__login input:focus,
.cwam-wlc__composer input:focus {
  outline: 2px solid rgba(37, 99, 235, 0.25);
  border-color: var(--cwam-wlc-accent);
}
.cwam-wlc__login button,
.cwam-wlc__composer button {
  border: none;
  border-radius: 10px;
  padding: 0 1rem;
  background: var(--cwam-wlc-accent);
  color: #fff;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
}
.cwam-wlc__login button:hover,
.cwam-wlc__composer button:hover { background: var(--cwam-wlc-accent-hover); }
.cwam-wlc__login button:disabled,
.cwam-wlc__composer button:disabled { opacity: 0.6; cursor: not-allowed; }
.cwam-wlc__status {
  min-height: 1.25rem;
  margin-top: 0.65rem;
  font-size: 0.9rem;
  color: var(--cwam-wlc-danger);
}
.cwam-wlc__transcript {
  background: var(--cwam-wlc-bg);
  border: 1px solid var(--cwam-wlc-border);
  border-radius: 12px;
  padding: 0.85rem;
  height: min(52vh, 420px);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  margin-bottom: 0.75rem;
}
.cwam-wlc__bubble {
  max-width: 92%;
  padding: 0.65rem 0.8rem;
  border-radius: 12px;
  white-space: pre-wrap;
  word-break: break-word;
  line-height: 1.45;
  font-size: 0.95rem;
}
.cwam-wlc__bubble--bot {
  align-self: flex-start;
  background: var(--cwam-wlc-bot);
  border-bottom-left-radius: 4px;
}
.cwam-wlc__bubble--user {
  align-self: flex-end;
  background: var(--cwam-wlc-user);
  border-bottom-right-radius: 4px;
}
.cwam-wlc__bubble--error {
  align-self: flex-start;
  background: #fef2f2;
  color: #991b1b;
  border-bottom-left-radius: 4px;
}
.cwam-wlc__sr {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
@media (max-width: 480px) {
  .cwam-wlc { margin: 0.75rem; padding: 0.85rem; }
  .cwam-wlc__transcript { height: min(58vh, 460px); }
}