#led-chat-widget {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 9999;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

/* チャットボタン全体 */
.chat-button {
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  transition: transform 0.2s;
}

.chat-button:hover {
  transform: translateY(-4px);
}

/* アイコン部分 */
.chat-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  position: relative;
}

.chat-icon svg {
  width: 30px;
  height: 30px;
  fill: white;
}

/* AIに相談ラベル */
.chat-label {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 8px 16px;
  border-radius: 20px;
  font-weight: 600;
  font-size: 14px;
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
  white-space: nowrap;
  letter-spacing: 0.5px;
}

/* AIバッジ */
.ai-badge {
  position: absolute;
  top: -8px;
  right: -8px;
  background: linear-gradient(135deg, #ff6b6b 0%, #ee5a6f 100%);
  color: white;
  font-size: 10px;
  font-weight: 700;
  padding: 4px 8px;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(238, 90, 111, 0.4);
  animation: pulse 2s infinite;
  letter-spacing: 0.5px;
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
    box-shadow: 0 2px 8px rgba(238, 90, 111, 0.4);
  }
  50% {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(238, 90, 111, 0.6);
  }
}

/* ツールチップ */
.chat-tooltip {
  position: absolute;
  bottom: 70px;
  right: 0;
  background: rgba(0, 0, 0, 0.85);
  color: white;
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 13px;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s, visibility 0.2s;
  pointer-events: none;
}

.chat-tooltip::after {
  content: '';
  position: absolute;
  bottom: -6px;
  right: 20px;
  width: 0;
  height: 0;
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-top: 6px solid rgba(0, 0, 0, 0.85);
}

.chat-window {
  position: absolute;
  bottom: 80px;
  right: 0;
  width: 380px;
  height: 500px;
  background: white;
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.2);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: opacity 0.2s, transform 0.2s;
}

.chat-window.hidden {
  opacity: 0;
  transform: translateY(20px);
  pointer-events: none;
}

.chat-header {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
}

#chat-close {
  background: none;
  border: none;
  color: white;
  font-size: 24px;
  cursor: pointer;
  padding: 0;
  width: 30px;
  height: 30px;
  line-height: 1;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: #f8f9fa;
}

.message {
  max-width: 80%;
  padding: 10px 14px;
  border-radius: 12px;
  word-wrap: break-word;
  white-space: pre-wrap;
  animation: slideIn 0.2s ease-out;
  line-height: 1.5;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.message.user {
  background: #667eea;
  color: white;
  align-self: flex-end;
  border-bottom-right-radius: 4px;
}

.message.bot {
  background: white;
  color: #333;
  align-self: flex-start;
  border-bottom-left-radius: 4px;
  border: 1px solid #e9ecef;
}

.loading-dots {
  display: flex;
  gap: 4px;
  padding: 4px 0;
}

.loading-dots span {
  width: 8px;
  height: 8px;
  background: #999;
  border-radius: 50%;
  animation: bounce 1.4s infinite ease-in-out;
}

.loading-dots span:nth-child(1) { animation-delay: -0.32s; }
.loading-dots span:nth-child(2) { animation-delay: -0.16s; }

@keyframes bounce {
  0%, 80%, 100% { transform: scale(0); }
  40% { transform: scale(1); }
}

.chat-input-area {
  display: flex;
  gap: 8px;
  padding: 16px;
  border-top: 1px solid #e9ecef;
  background: white;
}

#chat-input {
  flex: 1;
  padding: 10px 12px;
  border: 1px solid #dee2e6;
  border-radius: 8px;
  font-size: 14px;
  outline: none;
  font-family: inherit;
}

#chat-input:focus {
  border-color: #667eea;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

#chat-send {
  padding: 10px 20px;
  background: #667eea;
  color: white;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
  transition: background 0.2s;
  font-size: 14px;
}

#chat-send:hover {
  background: #5568d3;
}

#chat-send:active {
  transform: scale(0.98);
}

/* モバイル対応 */
@media (max-width: 480px) {
  #led-chat-widget {
    bottom: 10px;
    right: 10px;
  }

  .chat-icon {
    width: 56px;
    height: 56px;
  }

  .chat-label {
    font-size: 13px;
    padding: 6px 14px;
  }

  .chat-window {
    width: calc(100vw - 20px);
    height: calc(100vh - 100px);
    bottom: 100px;
    right: 0;
  }
}

/* スクロールバーのスタイリング */
.chat-messages::-webkit-scrollbar {
  width: 6px;
}

.chat-messages::-webkit-scrollbar-track {
  background: #f1f3f5;
}

.chat-messages::-webkit-scrollbar-thumb {
  background: #dee2e6;
  border-radius: 3px;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
  background: #ced4da;
}