/* ==========================================================================
   ZeroChat Messages Canvas - Canvas de Lectura Centrado estilo ChatGPT & Gemini
   ========================================================================== */

/* Contenedor individual de mensaje (centrado a max-width de lectura) */
.message-wrapper {
  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: var(--max-content-width, 68rem);
  margin-left: auto;
  margin-right: auto;
  padding: 0 0.5rem;
  min-width: 0;
  /* Sin animación en carga de historial — solo mensajes nuevos se animan */
}

/* Solo los mensajes generados en tiempo real reciben la animación */
.message-wrapper.is-new-message {
  animation: slideUpFadeIn 0.22s cubic-bezier(0.16, 1, 0.3, 1) both;
}


.message-wrapper.user {
  align-items: flex-end;
}

.message-wrapper.assistant {
  align-items: flex-start;
}

.message-row {
  display: flex;
  gap: 0.75rem;
  width: 100%;
  min-width: 0;
}

.message-row.user {
  flex-direction: row-reverse;
}

.message-content-wrapper {
  max-width: 100%;
  width: 100%;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.message-wrapper.user .message-content-wrapper {
  align-items: flex-end;
}

/* Burbuja / Bloque de Contenido */
.message-content {
  width: fit-content;
  max-width: 100%;
  min-width: 0;
  font-size: 0.935rem;
  line-height: 1.6;
  position: relative;
  word-break: break-word;
}

/* Mensaje del Usuario: Tarjeta limpia y sutil alineada a la derecha */
.message-row.user .message-content {
  background-color: var(--bg-surface-subtle);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  border-radius: 1.25rem 1.25rem 0.25rem 1.25rem;
  padding: 0.75rem 1.15rem;
  white-space: pre-wrap;
  max-width: 85%;
  box-shadow: var(--shadow-xs);
}

[data-theme="dark"] .message-row.user .message-content {
  background-color: #1e293b;
  color: var(--text-main);
  border-color: #334155;
}

/* Mensaje del Asistente: Sin enmarcado, estilo limpio ChatGPT / Gemini */
.message-row.assistant .message-content {
  background-color: transparent;
  color: var(--text-main);
  border: none;
  border-radius: 0;
  padding: 0.25rem 0;
  width: 100%;
  min-width: 0;
  text-wrap: pretty;
  box-shadow: none;
}

/* Eliminar margen superior en primer párrafo y margen inferior en último párrafo */
.message-row.assistant .message-content > p:first-child {
  margin-top: 0;
}

.message-row.assistant .message-content > p:last-child {
  margin-bottom: 0;
}


/* Mensaje de Error */
.message-error .message-content {
  background-color: #fee2e2;
  border: 1px solid #fca5a5;
  color: #991b1b;
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
}

[data-theme="dark"] .message-error .message-content {
  background-color: rgba(239, 68, 68, 0.15);
  border-color: rgba(239, 68, 68, 0.35);
  color: #fca5a5;
}

/* Fila unificada de pie de mensaje (Estadísticas y Acciones) */
.message-footer-row {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  width: 100%;
  gap: 0.5rem;
  margin-top: 0.15rem;
  flex-wrap: wrap;
}

.message-wrapper.user .message-footer-row {
  justify-content: flex-end;
}

/* Estadísticas de respuesta */
.message-stats {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  padding: 0.25rem 0.6rem;
  background-color: var(--bg-surface-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  width: fit-content;
  margin: 0;
}

.stat-item {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.stat-item .ui-icon {
  width: 12px;
  height: 12px;
  flex-shrink: 0;
  opacity: 0.85;
}

.stat-item.stat-item-cache {
  color: #0284c7;
  font-weight: 600;
}

@media (max-width: 640px) {
  .message-stats .stat-item:not(.stat-item-speed):not(.stat-item-total),
  .message-stats .stat-sep:not(.stat-sep-2) {
    display: none !important;
  }

  .message-row.assistant .message-content {
    font-size: 1.0625rem;
  }

  .message-row.user .message-content {
    font-size: 1.05rem;
  }

  .message-content h1 {
    font-size: 1.45rem;
  }

  .message-content h2 {
    font-size: 1.25rem;
  }

  .message-content h3 {
    font-size: 1.1rem;
  }
}

/* Acciones del mensaje (Copiar, Borrar, Reusar) */
.message-actions {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  margin: 0;
  opacity: 0.35;
  transition: opacity 0.15s ease;
  margin-left: 0;
}

.message-wrapper:hover .message-actions,
.message-wrapper:focus-within .message-actions {
  opacity: 1;
}

.btn-msg-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-muted);
  width: 44px;
  height: 44px;
  min-height: 44px;
  padding: 0;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-msg-action .ui-icon {
  width: 16px;
  height: 16px;
}

.btn-msg-action .ui-icon {
  flex-shrink: 0;
}

.btn-msg-action:hover {
  background-color: var(--bg-hover);
  color: var(--text-main);
  border-color: var(--border-color);
}

.btn-msg-action.btn-delete:hover {
  color: var(--danger);
  background-color: #fee2e2;
  border-color: #fca5a5;
}

[data-theme="dark"] .btn-msg-action.btn-delete:hover {
  background-color: rgba(239, 68, 68, 0.2);
  border-color: rgba(239, 68, 68, 0.4);
}

.btn-msg-action.copied {
  color: var(--success);
}

/* Siempre visible en dispositivos touch */
@media (hover: none) {
  .message-actions {
    opacity: 0.55;
  }
  .message-wrapper:focus-within .message-actions {
    opacity: 1;
  }
}



/* Bloque de razonamiento / CoT <think> como acordeón elegante */
.thought-block {
  margin: 0.85rem 0;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  border-left: 3px solid var(--primary);
  background-color: var(--bg-surface-subtle);
  overflow: hidden;
  transition: all 0.2s ease;
  /* interpolate-size: permite animar height: auto en el details nativo */
  interpolate-size: allow-keywords;
}

/* Fallback: sin animación si interpolate-size no está disponible */
@supports not (interpolate-size: allow-keywords) {
  .thought-block { overflow: visible; }
}

.thought-summary {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.5rem 0.85rem;
  cursor: pointer;
  font-weight: 500;
  font-size: 0.825rem;
  color: var(--text-muted);
  background-color: transparent;
  user-select: none;
  transition: color 0.15s, background-color 0.15s;
}

.thought-summary:hover {
  color: var(--text-main);
  background-color: var(--bg-hover);
}

.thought-content {
  padding: 0.75rem 1rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
  border-top: 1px solid var(--border-subtle);
  font-style: normal;
}

/* Cursor parpadeante durante streaming */
.streaming-cursor {
  display: inline-block;
  width: 6px;
  height: 1.15em;
  background-color: var(--primary);
  vertical-align: -0.15em;
  margin-left: 3px;
  border-radius: 1px;
  animation: blink 0.8s infinite;
}

.initial-cursor {
  margin: 0.2rem 0;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

/* ==========================================================================
   Indicador de Escritura del Asistente (Typing Indicator — Fase 8)
   ========================================================================== */
.typing-indicator {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 0.4rem 0.5rem;
  background-color: transparent;
  border: none;
  border-radius: var(--radius-xl);
  margin-bottom: 0.25rem;
}

.typing-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--text-muted);
  animation: typingBounce 1.2s ease-in-out infinite;
  flex-shrink: 0;
}

.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }

@media (prefers-reduced-motion: reduce) {
  .typing-dot {
    animation: none;
    opacity: 0.7;
  }
}


/* Tipografía de Contenido Markdown dentro del Mensaje */
.message-content h1,
.message-content h2,
.message-content h3,
.message-content h4 {
  margin-top: 1.15rem;
  margin-bottom: 0.45rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.35;
}

.message-content h1 { font-size: 1.35rem; }
.message-content h2 { font-size: 1.18rem; }
.message-content h3 { font-size: 1.05rem; }
.message-content h4 { font-size: 0.95rem; }

.message-content p {
  margin-bottom: 0.85rem;
  line-height: 1.65;
}

.message-content p:last-child {
  margin-bottom: 0;
}

.message-content ul,
.message-content ol {
  padding-left: 1.5rem;
  margin-bottom: 0.85rem;
}

.message-content li {
  margin-bottom: 0.35rem;
  line-height: 1.6;
}

.message-content blockquote {
  border-left: 3px solid var(--primary);
  padding-left: 0.85rem;
  margin: 0.85rem 0;
  color: var(--text-secondary);
  font-style: italic;
}

.message-content code:not(pre code) {
  background-color: var(--code-bg);
  color: var(--code-text);
  padding: 0.15rem 0.4rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.875em;
  border: 1px solid var(--border-color);
}

.message-row.user .message-content code:not(pre code) {
  background-color: rgba(0, 0, 0, 0.06);
  border-color: rgba(0, 0, 0, 0.08);
  color: var(--text-main);
}

[data-theme="dark"] .message-row.user .message-content code:not(pre code) {
  background-color: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.18);
  color: #ffffff;
}

/* ==========================================================================
   Imágenes en Mensajes del Chat
   ========================================================================== */
.message-content img,
.message-wrapper img {
  max-width: 100%;
  height: auto;
  box-sizing: border-box;
}

.message-images-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.75rem;
  width: 100%;
  max-width: 100%;
}

.message-image-item {
  display: flex;
  flex-direction: column;
  max-width: 100%;
  min-width: 0;
}

.message-image-thumb {
  max-width: 100%;
  width: auto;
  height: auto;
  max-height: min(75vh, 560px);
  object-fit: contain;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background-color: var(--bg-surface);
  cursor: pointer;
  display: block;
  box-shadow: var(--shadow-xs);
  transition: opacity 0.15s ease, transform 0.15s ease;
}

.message-image-thumb:hover {
  opacity: 0.92;
}

.message-image-caption {
  margin-top: 0.35rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  word-break: break-all;
  max-width: 100%;
}