/* ============================================================
   THM — Chat Demo Component (Simulación de conversación en vivo)
   ============================================================ */

.chat-demo {
  background: var(--color-bg);
}

.chat-demo__layout {
  display: grid;
  grid-template-columns: minmax(0, 420px) minmax(0, 1fr);
  gap: var(--space-12);
  align-items: center;
  max-width: 960px;
  margin: 0 auto;
}

/* ---------- Teléfono ---------- */
.chat-demo__phone {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.chat-demo__header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--color-text-primary);
}

.chat-demo__avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent-grad);
  color: #ffffff;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: var(--text-sm);
  flex-shrink: 0;
}

.chat-demo__header strong {
  display: block;
  color: #ffffff;
  font-size: var(--text-sm);
  line-height: var(--leading-snug);
}

/* Verde estado "en línea" aclarado para AA sobre #0f172a (5.9:1) */
.chat-demo__status {
  display: block;
  font-size: var(--text-xs);
  color: #34d399;
}

.chat-demo__messages {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-5);
  min-height: 380px;
  background: #eef2f7;
}

.chat-demo__day {
  align-self: center;
  padding: var(--space-1) var(--space-3);
  background: rgba(15, 23, 42, 0.06);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  color: var(--color-text-secondary);
}

.chat-msg {
  max-width: 85%;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
  color: var(--color-text-primary);
}

.chat-msg--client {
  align-self: flex-end;
  background: rgba(79, 70, 229, 0.12);
  border-bottom-right-radius: var(--radius-sm);
}

.chat-msg--agent {
  align-self: flex-start;
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-bottom-left-radius: var(--radius-sm);
}

.chat-msg--event {
  align-self: center;
  max-width: 100%;
  background: rgba(5, 150, 105, 0.1);
  border: 1px solid rgba(5, 150, 105, 0.25);
  color: #047857; /* AA 4.5:1 */
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  text-align: center;
  border-radius: var(--radius-full);
}

/* Indicador de escritura (tres puntos) */
.chat-msg--typing {
  display: flex;
  gap: 5px;
  align-items: center;
  padding: var(--space-3) var(--space-4);
}

.chat-msg--typing span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-text-disabled);
  animation: chatDot 400ms ease-in-out infinite alternate;
}

.chat-msg--typing span:nth-child(2) { animation-delay: 130ms; }
.chat-msg--typing span:nth-child(3) { animation-delay: 260ms; }

@keyframes chatDot {
  from { opacity: 0.35; transform: translateY(0); }
  to   { opacity: 1;    transform: translateY(-3px); }
}

/* Estado "armado" por JS: los mensajes se revelan uno a uno */
.chat-demo--armed .chat-msg {
  display: none;
}

.chat-demo--armed .chat-msg.is-shown,
.chat-demo--armed .chat-msg--typing {
  display: block;
  animation: chatIn 300ms ease;
}

.chat-demo--armed .chat-msg--typing {
  display: flex;
}

@keyframes chatIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.chat-demo__replay {
  display: block;
  width: 100%;
  padding: var(--space-3);
  background: #ffffff;
  border-top: 1px solid var(--color-border);
  color: var(--color-accent-1);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.chat-demo__replay:hover {
  background: var(--color-surface);
}

/* ---------- Columna de apoyo ---------- */
.chat-demo__punch {
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  color: var(--color-text-primary);
  border-left: 3px solid var(--color-accent-1);
  padding-left: var(--space-4);
  margin-bottom: var(--space-6);
}

.chat-demo__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}

.chat-demo__list li {
  display: flex;
  gap: var(--space-2);
  font-size: var(--text-base);
  color: var(--color-text-secondary);
}

.chat-demo__list li::before {
  content: '✓';
  color: var(--color-success);
  font-weight: 800;
  flex-shrink: 0;
}

/* Enlace al agente digital en vivo — "de la simulación a la realidad" */
.chat-demo__try {
  display: block;
  width: fit-content;
  margin-top: var(--space-4);
  padding: 0;
  border: 0;
  background: none;
  color: var(--color-accent-1);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  text-align: left;
  cursor: pointer;
  border-bottom: 1px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.chat-demo__try:hover {
  color: var(--color-accent-2);
  border-bottom-color: currentColor;
}

.chat-demo__try:focus-visible {
  outline: 2px solid var(--color-accent-1);
  outline-offset: 3px;
}

@media (max-width: 900px) {
  .chat-demo__layout {
    grid-template-columns: 1fr;
    gap: var(--space-8);
    max-width: 480px;
  }
}