/**
 * 동인AI 챗봇 — 전역 플로팅 위젯 (우하단)
 */

.dongin-chatbot-fab {
  position: fixed;
  right: max(1.25rem, env(safe-area-inset-right, 0px));
  left: auto;
  bottom: max(1.25rem, env(safe-area-inset-bottom, 0px));
  z-index: 9999;
  width: 3.75rem;
  height: 3.75rem;
  border: none;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: #fff;
  font-size: 1.5rem;
  background: linear-gradient(145deg, var(--color-horizon) 0%, #1e3a6e 100%);
  box-shadow:
    0 8px 24px rgba(42, 63, 111, 0.45),
    0 0 0 4px rgba(255, 255, 255, 0.35);
  transition: transform 0.2s var(--ease-out), box-shadow 0.2s var(--ease-out);
  -webkit-tap-highlight-color: transparent;
}

.dongin-chatbot-fab:hover {
  transform: scale(1.06);
  box-shadow:
    0 12px 32px rgba(42, 63, 111, 0.5),
    0 0 0 5px rgba(255, 255, 255, 0.45);
}

.dongin-chatbot-fab:active {
  transform: scale(0.96);
}

.dongin-chatbot-panel {
  position: fixed;
  right: max(1.25rem, env(safe-area-inset-right, 0px));
  left: auto;
  bottom: calc(max(1.25rem, env(safe-area-inset-bottom, 0px)) + 4.75rem);
  z-index: 9998;
  width: min(24rem, calc(100vw - 2.5rem));
  height: min(36rem, calc(100vh - 7rem));
  max-height: calc(100dvh - 7rem);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px) scale(0.98);
  transition:
    opacity 0.25s var(--ease-out),
    transform 0.25s var(--ease-out),
    visibility 0.25s;
}

.dongin-chatbot-panel.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.dongin-chatbot-panel__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  background: linear-gradient(135deg, var(--color-horizon) 0%, #1e3a6e 100%);
  color: #fff;
}

.dongin-chatbot-panel__title {
  margin: 0;
  font-size: var(--fs-h3);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.dongin-chatbot-panel__close {
  width: 2rem;
  height: 2rem;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  font-size: 1.25rem;
  line-height: 1;
  cursor: pointer;
}

.dongin-chatbot-panel__close:hover {
  background: rgba(255, 255, 255, 0.28);
}

.dongin-chatbot-panel__messages {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-md);
  background: var(--color-bg-page);
  -webkit-overflow-scrolling: touch;
}

.chatbot-welcome {
  text-align: center;
  padding: var(--space-xl) var(--space-md);
  color: var(--color-text-muted);
}

.chatbot-welcome h4 {
  margin: 0 0 var(--space-sm);
  color: var(--color-horizon);
  font-size: var(--fs-h3);
}

.chatbot-welcome p {
  margin: 0.35rem 0;
  font-size: var(--fs-sm);
  line-height: var(--lh-body);
}

.chatbot-message {
  display: flex;
  margin-bottom: var(--space-md);
}

.chatbot-message--user {
  justify-content: flex-end;
}

.chatbot-message--assistant {
  justify-content: flex-start;
}

.chatbot-message__bubble {
  max-width: 85%;
  padding: 0.65rem 0.9rem;
  border-radius: 1rem;
  font-size: var(--fs-sm);
  line-height: 1.55;
  word-break: break-word;
}

.chatbot-message--user .chatbot-message__bubble {
  background: var(--color-horizon);
  color: #fff;
  border-bottom-right-radius: 0.25rem;
}

.chatbot-citation {
  font-weight: 600;
  color: var(--color-horizon);
  text-decoration: none;
  white-space: nowrap;
}

.chatbot-citation:hover,
.chatbot-citation:focus-visible {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

.chatbot-message--assistant .chatbot-message__bubble {
  background: var(--color-bg-card);
  color: var(--color-text);
  border: 1px solid var(--color-border-light);
  border-bottom-left-radius: 0.25rem;
}

.chatbot-typing::after {
  content: '…';
  animation: dongin-chatbot-dots 1.2s steps(4, end) infinite;
}

@keyframes dongin-chatbot-dots {
  0%,
  20% {
    content: '';
  }
  40% {
    content: '.';
  }
  60% {
    content: '..';
  }
  80%,
  100% {
    content: '…';
  }
}

.dongin-chatbot-panel__input,
#chatbotInputArea.dongin-chatbot-panel__input {
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md);
  border-top: 1px solid var(--color-border-light);
  background: var(--color-bg-card);
  flex-shrink: 0;
}

.dongin-chatbot-panel__input input,
#chatbotInput {
  flex: 1 1 0;
  min-width: 0;
  width: auto;
  padding: 0.65rem 0.9rem;
  border: 1px solid var(--color-border-light);
  border-radius: 999px;
  font: inherit;
  font-size: 1rem;
  color: var(--color-text);
  background: var(--color-bg-page);
}

.dongin-chatbot-panel__input input:focus,
#chatbotInput:focus {
  outline: 2px solid var(--color-accent-soft);
  border-color: var(--color-horizon);
}

#chatbotSend {
  flex: 0 0 auto;
  width: 2.75rem;
  height: 2.75rem;
  border: none;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: #fff;
  background: var(--color-accent);
}

#chatbotSend:hover:not(:disabled) {
  background: var(--color-accent-hover);
}

#chatbotSend:disabled,
#chatbotInput:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

@media (max-width: 480px) {
  .dongin-chatbot-fab {
    right: max(0.75rem, env(safe-area-inset-right, 0px));
    left: auto;
    bottom: max(1rem, env(safe-area-inset-bottom, 0px));
  }

  .dongin-chatbot-panel {
    left: max(0.75rem, env(safe-area-inset-left, 0px));
    right: max(0.75rem, env(safe-area-inset-right, 0px));
    width: auto;
    height: min(32rem, calc(100dvh - 6.5rem));
    bottom: calc(max(1rem, env(safe-area-inset-bottom, 0px)) + 4.5rem);
  }
}