.chat-shell {
  padding: 1.25rem;
  border-radius: 28px;
  border: 1px solid rgba(28, 55, 94, 0.1);
  background: linear-gradient(180deg, rgba(255,255,255,0.98), rgba(247,250,255,0.96));
  box-shadow: var(--shadow);
}

.chat-window {
  min-height: 420px;
  max-height: 520px;
  overflow-y: auto;
  display: grid;
  gap: 1rem;
  padding: 0.35rem;
  margin-bottom: 1rem;
}

.chat-message {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 0.8rem;
  align-items: start;
}

.chat-message.user {
  grid-template-columns: 1fr 42px;
}

.chat-message.user .message-avatar {
  order: 2;
  background: linear-gradient(135deg, rgba(219, 234, 254, 1), rgba(204, 251, 241, 0.96));
  color: var(--primary-strong);
}

.chat-message.user .message-bubble {
  order: 1;
  background: linear-gradient(180deg, rgba(233, 242, 255, 0.9), rgba(245, 250, 255, 0.95));
  justify-self: end;
}

.message-avatar {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: rgba(31, 79, 209, 0.08);
  border: 1px solid rgba(31, 79, 209, 0.12);
  color: var(--primary-strong);
  font-size: 0.78rem;
  font-weight: 700;
}

.message-bubble {
  max-width: 100%;
  padding: 1rem 1rem 0.95rem;
  border-radius: 18px;
  border: 1px solid rgba(28, 55, 94, 0.08);
  background: rgba(255,255,255,0.94);
  box-shadow: 0 10px 20px rgba(19, 40, 72, 0.04);
}

.message-bubble p {
  margin: 0;
  white-space: pre-wrap;
  color: var(--text-soft);
}

.chat-form {
  display: grid;
  gap: 0.8rem;
}

.chat-form textarea {
  width: 100%;
  resize: vertical;
  min-height: 112px;
  border-radius: 18px;
  border: 1px solid rgba(28, 55, 94, 0.12);
  padding: 1rem;
  background: rgba(255,255,255,0.96);
  color: var(--text);
  outline: none;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.9);
}

.chat-form textarea:focus {
  border-color: rgba(31, 79, 209, 0.34);
  box-shadow: 0 0 0 4px rgba(31, 79, 209, 0.08);
}

.chat-form-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.chat-status {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.chat-loading .message-bubble {
  position: relative;
}

.chat-loading .message-bubble::after {
  content: 'Pensando...';
  color: var(--text-muted);
}

@media (max-width: 760px) {
  .chat-form-footer {
    flex-direction: column;
    align-items: stretch;
  }
}