/* RESET BÁSICO */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: Arial, sans-serif;
  background: #f2f4f7;
  color: #1f2937;
}

/* CONTENEDOR GENERAL */
.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 20px;
}

/* CHAT */
.chat-shell {
  background: #ffffff;
  border-radius: 20px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
  overflow: hidden;
}

/* HEADER */
.chat-header {
  padding: 18px 22px;
  background: #0042c4;
  color: white;
}

.chat-header h3 {
  margin-bottom: 5px;
}

.chat-header p {
  font-size: 0.9rem;
  opacity: 0.9;
}

/* MENSAJES */
#chat-messages {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-height: 520px;
  overflow-y: auto;
  padding: 20px;
  background: #f2f4f7;
}

/* BURBUJAS */
.message {
  display: block;
  width: auto;
  max-width: 85%;
  padding: 16px 18px;
  border-radius: 18px;
  line-height: 1.6;
  font-size: 1rem;
  white-space: normal;
  word-break: break-word;
  overflow-wrap: anywhere;
}

/* USUARIO */
.message.user {
  align-self: flex-end;
  background: #0042c4;
  color: #ffffff;
  border-bottom-right-radius: 6px;
}

/* IA */
.message.bot {
  align-self: flex-start;
  background: #ffffff;
  color: #1f2937;
  border: 1px solid #d9e2ec;
  border-bottom-left-radius: 6px;
}

/* FORMATO INTERNO DEL TEXTO */
.message.bot strong {
  color: #0042c4;
}

.message.bot h4 {
  margin-bottom: 8px;
  font-size: 1rem;
  color: #0042c4;
}

.message.bot ul {
  margin: 10px 0 0 18px;
}

.message.bot li {
  margin-bottom: 6px;
}

/* FORMULARIO */
.chat-form {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 16px;
  background: #ffffff;
  border-top: 1px solid #e5e7eb;
}

#chat-input {
  width: 100%;
  min-height: 100px;
  border: 1px solid #cbd5e1;
  border-radius: 12px;
  padding: 14px;
  font-size: 1rem;
  resize: vertical;
}

#chat-input:focus {
  outline: none;
  border-color: #0042c4;
}

.chat-form button {
  align-self: flex-start;
  border: none;
  background: #0042c4;
  color: white;
  padding: 12px 20px;
  border-radius: 12px;
  font-weight: bold;
  cursor: pointer;
}

.chat-form button:hover {
  opacity: 0.9;
}