/**
 * Assistente IA: botao flutuante (FAB) no canto inferior direito + painel responsivo.
 */

.ai-assistant-fab {
  position: fixed;
  z-index: 1060;
  right: max(0.75rem, env(safe-area-inset-right, 0px));
  bottom: max(0.75rem, env(safe-area-inset-bottom, 0px));
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.75rem;
  max-width: min(100vw - 1.5rem, 28rem);
  pointer-events: none;
}

.ai-assistant-fab > * {
  pointer-events: auto;
}

/* Botao flutuante do assistente (FAB) */
.ai-assistant-fab-btn {
  --ai-fab-diameter: 3.25rem;
  appearance: none;
  cursor: pointer;
  width: var(--ai-fab-diameter);
  height: var(--ai-fab-diameter);
  padding: 0;
  border-radius: 50%;
  overflow: hidden;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  border: 1px solid rgba(var(--bs-primary-rgb), 0.28);
  background: linear-gradient(
    135deg,
    rgba(var(--bs-primary-rgb), 0.95) 0%,
    rgba(var(--bs-primary-rgb), 0.82) 100%
  );
  color: #fff;
  box-shadow:
    0 0.35rem 0.8rem rgba(76, 78, 100, 0.2),
    0 0.9rem 1.6rem rgba(var(--bs-primary-rgb), 0.24);
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease,
    background-color 0.2s ease,
    border-color 0.2s ease,
    color 0.2s ease;
}

.ai-assistant-fab-icon {
  font-size: 1.45rem;
  line-height: 1 !important;
  margin: 0;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1em;
  height: 1em;
  flex-shrink: 0;
  transform: none;
  transform-origin: center center;
  -webkit-font-smoothing: antialiased;
}

.ai-assistant-fab-btn .ai-assistant-fab-icon.mdi::before {
  line-height: 1;
}

.ai-assistant-fab-btn:hover {
  transform: translateY(-1px) scale(1.02);
  background: linear-gradient(
    135deg,
    rgba(var(--bs-primary-rgb), 1) 0%,
    rgba(var(--bs-primary-rgb), 0.9) 100%
  );
  border-color: rgba(var(--bs-primary-rgb), 0.5);
  color: #fff;
  box-shadow:
    0 0.45rem 0.95rem rgba(76, 78, 100, 0.24),
    0 1rem 1.8rem rgba(var(--bs-primary-rgb), 0.28);
}

.ai-assistant-fab-btn:focus-visible {
  outline: 0;
  box-shadow:
    0 0 0 0.2rem rgba(var(--bs-primary-rgb), 0.25),
    0 0.2rem 0.45rem rgba(76, 78, 100, 0.12);
}

.ai-assistant-fab--open .ai-assistant-fab-btn {
  background: linear-gradient(
    135deg,
    rgba(var(--bs-primary-rgb), 1) 0%,
    rgba(var(--bs-primary-rgb), 0.88) 100%
  );
  border-color: rgba(var(--bs-primary-rgb), 0.55);
  box-shadow:
    0 0.2rem 0.55rem rgba(76, 78, 100, 0.16),
    0 0 0 2px rgba(var(--bs-primary-rgb), 0.2);
}

/* Painel: largura da coluna FAB, altura limitada pela viewport */
.ai-assistant-fab .ai-assistant-panel {
  width: min(28rem, calc(100vw - 1.5rem));
  max-width: 100%;
  margin: 0;
  padding: 0;
  border: 1px solid var(--bs-border-color);
  border-radius: 0.75rem;
  background-color: var(--bs-body-bg);
  box-shadow:
    0 0.25rem 0.5rem rgba(76, 78, 100, 0.08),
    0 1rem 2.5rem rgba(76, 78, 100, 0.14);
  overflow: hidden;
  transform-origin: bottom right;
}

.ai-assistant-fab .ai-assistant-panel:not(.d-none) {
  animation: ai-assistant-panel-in 0.22s ease-out;
}

@keyframes ai-assistant-panel-in {
  from {
    opacity: 0;
    transform: translateY(0.5rem) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* Painel interno: mesma altura em todas as telas (antes a rolagem limitava a 16rem/22rem) */
.ai-chat-panel {
  display: flex;
  flex-direction: column;
  height: min(72vh, calc(100dvh - 6rem));
}

/* Cabecalho */
.ai-chat-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.75rem 0.875rem;
  border-bottom: 1px solid var(--bs-border-color);
  background: linear-gradient(
    180deg,
    rgba(var(--bs-primary-rgb), 0.06) 0%,
    transparent 100%
  );
}

.ai-chat-header-brand {
  display: flex;
  align-items: flex-start;
  gap: 0.625rem;
  min-width: 0;
}

.ai-chat-header-icon {
  flex-shrink: 0;
  width: 2.25rem;
  height: 2.25rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.375rem;
  background-color: rgba(var(--bs-primary-rgb), 0.12);
  color: var(--bs-primary);
  font-size: 1.25rem;
}

.ai-chat-header-text {
  min-width: 0;
}

.ai-chat-title {
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.25;
  margin: 0;
  color: var(--bs-heading-color);
  letter-spacing: -0.01em;
}

.ai-chat-subtitle {
  font-size: 0.75rem;
  margin: 0.2rem 0 0 0;
  color: var(--bs-secondary-color);
  line-height: 1.35;
}

.ai-chat-header-actions {
  display: flex;
  align-items: center;
  gap: 0.125rem;
  flex-shrink: 0;
}

.ai-chat-header-actions .btn-icon {
  width: 2rem;
  height: 2rem;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* Area de mensagens: flexivel conforme altura disponivel */
.ai-chat-body {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.ai-chat-scroll {
  flex: 1;
  min-height: 0;
  overflow-x: hidden;
  overflow-y: auto;
  scroll-behavior: smooth;
  background-color: rgba(var(--bs-secondary-rgb), 0.06);
}

.ai-chat-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 8rem;
  padding: 1.25rem 1rem;
  text-align: center;
}

.ai-chat-empty.d-none {
  display: none !important;
}

.ai-chat-empty-inner {
  max-width: 16rem;
}

.ai-chat-empty-icon {
  font-size: 2rem;
  color: var(--bs-secondary-color);
  opacity: 0.65;
  display: block;
  margin-bottom: 0.5rem;
}

.ai-chat-empty-title {
  font-size: 0.875rem;
  font-weight: 600;
  margin: 0 0 0.35rem 0;
  color: var(--bs-heading-color);
}

.ai-chat-empty-text {
  font-size: 0.8125rem;
  line-height: 1.45;
  margin: 0;
  color: var(--bs-secondary-color);
}

.ai-chat-messages {
  padding: 0.75rem 0.875rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}

.ai-chat-msg-row {
  display: flex;
  width: 100%;
}

.ai-chat-msg-row--user {
  justify-content: flex-end;
}

.ai-chat-msg-row--assistant {
  justify-content: flex-start;
}

.ai-chat-bubble {
  max-width: 92%;
  padding: 0.5rem 0.75rem;
  border-radius: 0.625rem;
  font-size: 0.8125rem;
  line-height: 1.45;
  white-space: pre-wrap;
  word-break: break-word;
}

.ai-chat-bubble--user {
  background-color: rgba(var(--bs-primary-rgb), 0.14);
  color: var(--bs-body-color);
  border: 1px solid rgba(var(--bs-primary-rgb), 0.22);
  border-bottom-right-radius: 0.25rem;
}

.ai-chat-bubble--assistant {
  background-color: var(--bs-body-bg);
  color: var(--bs-body-color);
  border: 1px solid var(--bs-border-color);
  border-bottom-left-radius: 0.25rem;
  box-shadow: 0 1px 2px rgba(76, 78, 100, 0.06);
}

.ai-chat-loading-row .ai-chat-bubble--assistant {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  min-height: 2.25rem;
}

/* Rodape e compositor */
.ai-chat-footer {
  padding: 0.625rem 0.75rem 0.75rem;
  border-top: 1px solid var(--bs-border-color);
  background-color: var(--bs-body-bg);
}

.ai-chat-hint {
  font-size: 0.6875rem;
  line-height: 1.4;
  margin-bottom: 0.5rem !important;
}

.ai-chat-kbd {
  display: inline-block;
  padding: 0.1rem 0.35rem;
  font-size: 0.65rem;
  font-family: inherit;
  font-weight: 500;
  line-height: 1;
  color: var(--bs-secondary-color);
  background-color: rgba(var(--bs-secondary-rgb), 0.12);
  border: 1px solid var(--bs-border-color);
  border-radius: 0.25rem;
}

.ai-chat-composer {
  display: flex;
  align-items: flex-end;
  gap: 0.375rem;
  padding: 0.25rem;
  border-radius: 0.5rem;
  border: 1px solid var(--bs-border-color);
  background-color: rgba(var(--bs-secondary-rgb), 0.04);
}

.ai-chat-composer:focus-within {
  border-color: rgba(var(--bs-primary-rgb), 0.45);
  box-shadow: 0 0 0 0.2rem rgba(var(--bs-primary-rgb), 0.12);
}

.ai-chat-attach-btn {
  flex-shrink: 0;
  width: 2.25rem;
  height: 2.25rem;
  padding: 0;
  border-radius: 0.375rem;
  margin-bottom: 0.125rem;
}

.ai-chat-input {
  flex: 1;
  min-width: 0;
  min-height: 2.5rem;
  max-height: 6rem;
  resize: none;
  font-size: 0.8125rem;
  line-height: 1.4;
  padding: 0.5rem 0.625rem;
  border: none;
  background: transparent;
  box-shadow: none;
}

.ai-chat-input:focus {
  box-shadow: none;
}

.ai-chat-send-btn {
  flex-shrink: 0;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  border-radius: 0.5rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.ai-chat-send-btn:disabled {
  opacity: 0.65;
}