/* ========================================
   Asistente IA — UI conversacional (estilo ChatGPT + Apple)
   Full-screen, burbujas limpias, tipografía generosa.
   ======================================== */

/* ---------- Portal & Backdrop ---------- */
.ai-chat-portal {
  position: fixed;
  inset: 0;
  z-index: calc(var(--z-modal-portal) + 2);
  display: flex;
  align-items: center;
  justify-content: center;
}

.ai-chat-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.6);
  z-index: 0;
}

/* ---------- Panel full-screen ---------- */
.ai-chat-panel {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100dvh;
  z-index: 1;
  display: flex;
  flex-direction: column;
  background-color: var(--color-bg);
  overflow: hidden;
  /* historial overlay posicionamiento */
  isolation: isolate;
}

/* Zoom-in transition (estilo iOS modal) */
.ai-chat-zoom-enter {
  transition: opacity 0.28s cubic-bezier(0.22, 0.61, 0.36, 1),
              transform 0.28s cubic-bezier(0.22, 0.61, 0.36, 1);
}

.ai-chat-zoom-start {
  opacity: 0;
  transform: scale(0.96);
}

.ai-chat-zoom-end {
  opacity: 1;
  transform: scale(1);
}

.ai-chat-zoom-leave {
  transition: opacity 0.2s ease-in,
              transform 0.2s ease-in;
}

@media (prefers-reduced-motion: reduce) {
  .ai-chat-zoom-enter,
  .ai-chat-zoom-leave {
    transition: opacity 0.15s ease;
  }
  .ai-chat-zoom-start {
    transform: scale(1);
  }
}

/* ---------- Header minimalista ---------- */
.ai-chat-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex-shrink: 0;
  height: 3.25rem;
  padding: 0 var(--spacing-sm);
  border-bottom: 1px solid var(--color-border);
  background-color: var(--color-bg);
}

.ai-chat-header-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  border: none;
  border-radius: var(--radius-full);
  background: transparent;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast);
  -webkit-tap-highlight-color: transparent;
  flex-shrink: 0;
}

.ai-chat-header-btn:hover:not(:disabled) {
  background-color: var(--color-bg-secondary);
  color: var(--color-text);
}

.ai-chat-header-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.ai-chat-header-icon {
  width: 1.25rem;
  height: 1.25rem;
  stroke-width: 2;
}

.ai-chat-header-title {
  flex: 1;
  margin: 0;
  padding: 0 var(--spacing-xs);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: -0.01em;
  text-align: center;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.ai-chat-header-actions {
  display: flex;
  align-items: center;
  gap: 0;
  flex-shrink: 0;
}

/* ---------- Hilo de mensajes ---------- */
.ai-chat-thread {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  padding: var(--spacing-md) var(--spacing-md) var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: 0;
  scroll-behavior: smooth;
}

/* ---------- Estado vacío ---------- */
.ai-chat-empty {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--spacing-xl) var(--spacing-md);
  min-height: 16rem;
}

.ai-chat-empty-greeting {
  width: 3.5rem;
  height: 3.5rem;
  margin-bottom: var(--spacing-lg);
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--color-info), #a855f7);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(59, 130, 246, 0.3);
}

[data-theme="light"] .ai-chat-empty-greeting {
  box-shadow: 0 4px 16px rgba(59, 130, 246, 0.2);
}

.ai-chat-empty-greeting-icon {
  width: 1.5rem;
  height: 1.5rem;
  color: #ffffff;
  stroke-width: 2;
}

.ai-chat-empty-title {
  margin: 0 0 var(--spacing-xs);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.ai-chat-empty-hint {
  margin: 0;
  max-width: 18rem;
  font-size: 0.875rem;
  line-height: 1.55;
  color: var(--color-text-muted);
}

/* ---------- Turnos de mensaje ---------- */
.ai-chat-turn {
  width: 100%;
  padding: var(--spacing-md) 0;
}

/* Animación de entrada de mensajes */
.ai-msg-enter {
  transition: opacity 0.3s ease-out, transform 0.3s ease-out;
}

.ai-msg-start {
  opacity: 0;
  transform: translateY(10px);
}

.ai-msg-end {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .ai-msg-enter { transition: opacity 0.1s ease; }
  .ai-msg-start { transform: none; }
}

/* ---------- Mensaje asistente (avatar + texto, sin banda de fondo) ---------- */
.ai-chat-msg-assistant {
  display: flex;
  gap: var(--spacing-md);
  align-items: flex-start;
  max-width: 100%;
}

.ai-chat-msg-content {
  flex: 1;
  min-width: 0;
  padding-top: 0.125rem;
}

/* ---------- Mensaje usuario (burbuja derecha, sin borde) ---------- */
.ai-chat-msg-user {
  display: flex;
  justify-content: flex-end;
}

/* ---------- Avatar ---------- */
.ai-chat-avatar {
  flex-shrink: 0;
  width: 2rem;
  height: 2rem;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
}

.ai-chat-avatar--assistant {
  background: linear-gradient(135deg, var(--color-info), #7c3aed);
  color: #ffffff;
  box-shadow: 0 1px 4px rgba(59, 130, 246, 0.25);
}

[data-theme="light"] .ai-chat-avatar--assistant {
  box-shadow: 0 1px 4px rgba(59, 130, 246, 0.2);
}

.ai-chat-avatar-icon {
  width: 0.9375rem;
  height: 0.9375rem;
  stroke-width: 2.25;
}

/* ---------- Texto de mensaje ---------- */
.ai-chat-prose {
  margin: 0;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text);
  white-space: pre-wrap;
  word-break: break-word;
}

/* Bullets limpios */
.ai-chat-bullets {
  margin-top: var(--spacing-sm);
}

.ai-chat-bullet {
  margin: 0 0 0.3rem;
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--color-text-secondary);
}

/* ---------- Burbuja de usuario (estilo iMessage, sin borde) ---------- */
.ai-chat-bubble-user {
  max-width: min(82%, 22rem);
  padding: 0.75rem 1rem;
  border-radius: 1.25rem;
  background-color: var(--color-bg-elevated);
}

[data-theme="light"] .ai-chat-bubble-user {
  background-color: var(--color-gray-200);
}

.ai-chat-bubble-user-text {
  margin: 0;
  font-size: 1rem;
  line-height: 1.5;
  color: var(--color-text);
  white-space: pre-wrap;
  word-break: break-word;
}

/* ---------- Gráficas ---------- */
.ai-chat-charts {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.ai-chat-chart-card {
  border-radius: var(--radius-xl);
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-sm);
}

.ai-chat-chart-heading {
  margin: 0 0 var(--spacing-sm);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
}

.ai-chat-chart-canvas-box {
  position: relative;
  height: 210px;
  max-width: 100%;
}

.analytics-ai-chart-canvas {
  display: block;
  width: 100% !important;
  height: 210px !important;
  max-height: 210px;
}

.ai-chat-chart-note {
  margin: var(--spacing-sm) 0 0;
  font-size: 0.75rem;
  line-height: 1.4;
  color: var(--color-text-muted);
}

/* ---------- Sugerencias / chips ---------- */
.ai-chat-suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.ai-chat-chip {
  padding: 0.5rem 0.875rem;
  font-size: 0.8125rem;
  font-weight: 500;
  text-align: left;
  line-height: 1.35;
  color: var(--color-text);
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
  max-width: 100%;
  -webkit-tap-highlight-color: transparent;
  font-family: inherit;
}

.ai-chat-chip:hover {
  background-color: var(--color-bg-elevated);
  border-color: var(--color-text-muted);
}

/* Chip de sugerencia en estado vacío */
.ai-chat-chip--suggested {
  background-color: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  font-size: 0.8125rem;
  padding: 0.55rem 1rem;
}

[data-theme="light"] .ai-chat-chip--suggested {
  background-color: var(--color-bg-card);
}

.ai-chat-chip--suggested:hover {
  background-color: var(--color-bg-secondary);
  border-color: var(--color-info);
  color: var(--color-info);
}

/* ---------- Typing indicator ---------- */
.ai-chat-typing {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0;
  min-height: 1.7rem;
}

.ai-chat-typing-dot {
  width: 0.4rem;
  height: 0.4rem;
  border-radius: var(--radius-full);
  background-color: var(--color-text-muted);
  animation: ai-chat-bounce 1.2s ease-in-out infinite;
}

.ai-chat-typing-dot:nth-child(2) { animation-delay: 0.15s; }
.ai-chat-typing-dot:nth-child(3) { animation-delay: 0.3s; }

@keyframes ai-chat-bounce {
  0%, 60%, 100% {
    opacity: 0.3;
    transform: translateY(0);
  }
  30% {
    opacity: 1;
    transform: translateY(-0.25rem);
  }
}

/* ---------- Error banner ---------- */
.ai-chat-error-banner {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-lg);
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--color-danger);
  background-color: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.ai-chat-error-icon {
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
  margin-top: 0.1rem;
}

/* ---------- Interruptor rápido / profundo (Twitch-like) ---------- */
.ai-chat-composer-toolbar {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  padding: 0 0 var(--spacing-sm);
}

.ai-chat-mode-tw {
  display: inline-flex;
  align-items: stretch;
  flex-shrink: 0;
  border-radius: 0.5rem;
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  overflow: hidden;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

[data-theme="light"] .ai-chat-mode-tw {
  background-color: var(--color-gray-100);
}

.ai-chat-mode-tw-btn {
  position: relative;
  padding: 0.375rem 0.875rem;
  font-size: 0.8125rem;
  font-weight: 600;
  font-family: inherit;
  letter-spacing: 0.02em;
  border: none;
  background-color: transparent;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: color var(--transition-fast), background-color var(--transition-fast);
  -webkit-tap-highlight-color: transparent;
}

.ai-chat-mode-tw-btn + .ai-chat-mode-tw-btn {
  border-left: 1px solid var(--color-border);
}

.ai-chat-mode-tw-btn.is-active {
  background-color: var(--color-info);
  color: #ffffff;
}

[data-theme="light"] .ai-chat-mode-tw-btn.is-active {
  background-color: var(--color-info);
  color: #ffffff;
}

.ai-chat-mode-tw-btn:not(.is-active):hover {
  color: var(--color-text);
  background-color: rgba(255, 255, 255, 0.04);
}

[data-theme="light"] .ai-chat-mode-tw-btn:not(.is-active):hover {
  background-color: rgba(0, 0, 0, 0.04);
}

@media (prefers-reduced-motion: reduce) {
  .ai-chat-mode-tw-btn {
    transition: none;
  }
}

/* ---------- Overlay historial ---------- */
.ai-chat-history-overlay {
  position: absolute;
  inset: 0;
  z-index: 10;
}

.ai-chat-history-backdrop {
  position: absolute;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.45);
}

.ai-chat-history-sheet {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(21rem, 92vw);
  max-width: 100%;
  display: flex;
  flex-direction: column;
  background-color: var(--color-bg);
  border-left: 1px solid var(--color-border);
  box-shadow: var(--shadow-2xl);
}

.ai-chat-history-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.ai-chat-history-title {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
}

.ai-chat-history-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  padding: 0;
  border: none;
  border-radius: var(--radius-full);
  background: transparent;
  color: var(--color-text-secondary);
  cursor: pointer;
}

.ai-chat-history-close:hover {
  background-color: var(--color-bg-secondary);
  color: var(--color-text);
}

.ai-chat-history-close-icon {
  width: 1.125rem;
  height: 1.125rem;
  stroke-width: 2;
}

.ai-chat-history-scroll {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: var(--spacing-sm);
  -webkit-overflow-scrolling: touch;
}

.ai-chat-history-empty {
  margin: var(--spacing-md) var(--spacing-sm);
  font-size: 0.875rem;
  color: var(--color-text-muted);
  text-align: center;
  line-height: 1.45;
}

.ai-chat-history-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.ai-chat-history-li {
  margin: 0;
  padding: 0;
}

.ai-chat-history-row {
  display: flex;
  align-items: stretch;
  gap: 0;
  margin-bottom: var(--spacing-sm);
}

.ai-chat-history-item {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.2rem;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg) 0 0 var(--radius-lg);
  border-right: none;
  background-color: var(--color-bg-secondary);
  color: var(--color-text);
  font-family: inherit;
  cursor: pointer;
  text-align: left;
  transition: background-color var(--transition-fast);
}

.ai-chat-history-item:hover {
  background-color: var(--color-bg-card);
}

.ai-chat-history-item-title {
  font-size: 0.8125rem;
  font-weight: 600;
  line-height: 1.35;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
}

.ai-chat-history-item-time {
  font-size: 0.6875rem;
  color: var(--color-text-muted);
}

.ai-chat-history-item-delete {
  flex-shrink: 0;
  width: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  background-color: var(--color-bg-secondary);
  color: var(--color-text-muted);
  cursor: pointer;
}

.ai-chat-history-item-delete:hover {
  background-color: rgba(239, 68, 68, 0.12);
  color: var(--color-danger);
  border-color: rgba(239, 68, 68, 0.35);
}

.ai-chat-history-delete-icon {
  width: 1rem;
  height: 1rem;
  stroke-width: 2;
}

/* ---------- Compositor (estilo ChatGPT) ---------- */
.ai-chat-composer-area {
  position: relative;
  flex-shrink: 0;
  padding: var(--spacing-sm) var(--spacing-md);
  padding-bottom: max(var(--spacing-md), env(safe-area-inset-bottom));
  background: linear-gradient(180deg, transparent, var(--color-bg) 0.5rem);
  border-top: 1px solid var(--color-border);
}

.ai-chat-composer {
  display: flex;
  align-items: flex-end;
  gap: var(--spacing-sm);
  padding: 0.5rem 0.5rem 0.5rem 1rem;
  border-radius: 1.5rem;
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

[data-theme="light"] .ai-chat-composer {
  background-color: var(--color-white);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
}

.ai-chat-composer:focus-within {
  border-color: var(--color-text-muted);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
}

[data-theme="light"] .ai-chat-composer:focus-within {
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}

.ai-chat-composer-input {
  flex: 1;
  min-height: 2.5rem;
  max-height: 7.5rem;
  padding: 0.5rem 0;
  border: none;
  background: transparent;
  color: var(--color-text);
  font-size: 1rem;
  font-family: inherit;
  line-height: 1.45;
  resize: none;
  overflow-y: auto;
}

.ai-chat-composer-input::placeholder {
  color: var(--color-text-muted);
}

.ai-chat-composer-input:focus {
  outline: none;
}

.ai-chat-composer-input:disabled {
  opacity: 0.45;
}

/* Botón send */
.ai-chat-send {
  flex-shrink: 0;
  width: 2.25rem;
  height: 2.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  border: none;
  border-radius: var(--radius-full);
  background-color: var(--color-text);
  color: var(--color-bg);
  cursor: pointer;
  transition: opacity var(--transition-fast), transform var(--transition-fast), background-color var(--transition-fast);
  -webkit-tap-highlight-color: transparent;
}

[data-theme="light"] .ai-chat-send {
  background-color: var(--color-gray-900);
  color: var(--color-white);
}

.ai-chat-send:hover:not(:disabled) {
  opacity: 0.9;
}

.ai-chat-send:active:not(:disabled) {
  transform: scale(0.94);
}

.ai-chat-send:disabled {
  opacity: 0.25;
  cursor: not-allowed;
}

.ai-chat-send--active {
  background-color: var(--color-info);
  color: #ffffff;
}

[data-theme="light"] .ai-chat-send--active {
  background-color: var(--color-info);
  color: #ffffff;
}

.ai-chat-send-icon {
  width: 1.125rem;
  height: 1.125rem;
  stroke-width: 2.75;
}

/* ---------- Footnote ---------- */
.ai-chat-footnote {
  margin: var(--spacing-sm) 0 0;
  text-align: center;
  font-size: 0.6875rem;
  line-height: 1.4;
  color: var(--color-text-muted);
}

/* ---------- Utility ---------- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.scale-95 { transform: scale(0.95); }
.scale-100 { transform: scale(1); }