/* ══════════════════════════════════════════════════
   MercadoRD — Widget del Asistente IA (chatbot)
   Botón flotante + panel de chat. Usa las variables de styles.css.
   ══════════════════════════════════════════════════ */

#mrdChatBtn {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 1400;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  border: none;
  cursor: pointer;
  background: var(--primary, #003087);
  color: #fff;
  font-size: 26px;
  line-height: 1;
  box-shadow: 0 6px 20px rgba(0, 48, 135, .35);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform .18s, box-shadow .18s;
}
#mrdChatBtn:hover { transform: scale(1.06); box-shadow: 0 8px 26px rgba(0, 48, 135, .45); }
#mrdChatBtn:active { transform: scale(.97); }
#mrdChatBtn .mrd-chat-badge {
  position: absolute;
  top: -2px; right: -2px;
  min-width: 18px; height: 18px;
  padding: 0 4px;
  border-radius: 9px;
  background: var(--accent, #e43e2b);
  color: #fff;
  font-size: 11px; font-weight: 700;
  display: none;
  align-items: center; justify-content: center;
}

#mrdChatPanel {
  position: fixed;
  right: 24px;
  bottom: 92px;
  z-index: 1400;
  width: 370px;
  max-width: calc(100vw - 32px);
  height: 540px;
  max-height: calc(100vh - 130px);
  background: var(--card, #fff);
  border: 1px solid var(--border, #dde3ee);
  border-radius: 16px;
  box-shadow: 0 16px 48px rgba(20, 30, 60, .28);
  display: none;
  flex-direction: column;
  overflow: hidden;
  font-family: 'Sora', sans-serif;
}
#mrdChatPanel.open { display: flex; animation: mrdChatIn .18s ease-out; }
@keyframes mrdChatIn { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }

.mrd-chat-head {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 14px;
  background: var(--primary, #003087);
  color: #fff;
}
.mrd-chat-head .mrd-chat-avatar {
  width: 34px; height: 34px; border-radius: 50%;
  background: rgba(255, 255, 255, .18);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
}
.mrd-chat-head .mrd-chat-title { flex: 1; line-height: 1.2; }
.mrd-chat-head .mrd-chat-title strong { font-size: 14px; font-weight: 700; display: block; }
.mrd-chat-head .mrd-chat-title span { font-size: 11px; opacity: .85; }
.mrd-chat-head .mrd-chat-close {
  background: none; border: none; color: #fff; cursor: pointer;
  font-size: 22px; line-height: 1; padding: 2px 6px; border-radius: 6px;
}
.mrd-chat-head .mrd-chat-close:hover { background: rgba(255, 255, 255, .15); }

.mrd-chat-msgs {
  flex: 1;
  overflow-y: auto;
  padding: 14px;
  background: var(--bg, #f4f6f9);
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.mrd-msg { max-width: 84%; padding: 9px 12px; border-radius: 14px; font-size: 13.5px; line-height: 1.45; white-space: pre-wrap; word-wrap: break-word; }
.mrd-msg.bot { align-self: flex-start; background: #fff; color: var(--text, #1a1a2e); border: 1px solid var(--border, #dde3ee); border-bottom-left-radius: 4px; }
.mrd-msg.user { align-self: flex-end; background: var(--primary, #003087); color: #fff; border-bottom-right-radius: 4px; }

.mrd-chat-typing { align-self: flex-start; display: flex; gap: 4px; padding: 11px 14px; background: #fff; border: 1px solid var(--border, #dde3ee); border-radius: 14px; border-bottom-left-radius: 4px; }
.mrd-chat-typing span { width: 7px; height: 7px; border-radius: 50%; background: #b9c2d4; animation: mrdBlink 1.3s infinite both; }
.mrd-chat-typing span:nth-child(2) { animation-delay: .2s; }
.mrd-chat-typing span:nth-child(3) { animation-delay: .4s; }
@keyframes mrdBlink { 0%, 80%, 100% { opacity: .3; } 40% { opacity: 1; } }

.mrd-chat-suggest { display: flex; flex-wrap: wrap; gap: 6px; padding: 0 14px 10px; background: var(--bg, #f4f6f9); }
.mrd-chat-suggest button {
  font-family: 'Sora', sans-serif;
  font-size: 12px; font-weight: 600;
  padding: 7px 11px; border-radius: 16px;
  border: 1px solid var(--border, #dde3ee);
  background: #fff; color: var(--primary, #003087); cursor: pointer;
}
.mrd-chat-suggest button:hover { background: #eef3fb; }

.mrd-chat-input {
  display: flex; align-items: flex-end; gap: 8px;
  padding: 10px 12px;
  border-top: 1px solid var(--border, #dde3ee);
  background: var(--card, #fff);
}
.mrd-chat-input textarea {
  flex: 1; resize: none; max-height: 96px; min-height: 22px;
  border: 1px solid var(--border, #dde3ee); border-radius: 10px;
  padding: 9px 12px; font-size: 13.5px; font-family: 'Sora', sans-serif;
  outline: none; color: var(--text, #1a1a2e); line-height: 1.4;
}
.mrd-chat-input textarea:focus { border-color: var(--primary, #003087); }
.mrd-chat-input .mrd-chat-send {
  flex-shrink: 0;
  width: 40px; height: 40px; border-radius: 10px;
  border: none; cursor: pointer;
  background: var(--accent, #e43e2b); color: #fff;
  font-size: 17px; display: flex; align-items: center; justify-content: center;
  transition: background .2s;
}
.mrd-chat-send:hover { background: #c0321f; }
.mrd-chat-send:disabled { opacity: .5; cursor: default; }

/* Móvil: subir el botón sobre la bottom-nav y panel casi a pantalla completa */
@media (max-width: 700px) {
  #mrdChatBtn { right: 16px; bottom: 78px; width: 54px; height: 54px; font-size: 24px; }
  #mrdChatPanel {
    right: 8px; left: 8px;
    bottom: 8px;
    width: auto;
    height: calc(100vh - 90px);
    max-height: none;
  }
}