/**
 * @file    : css/chatbot/chatbot-messages.css
 * @purpose : 訊息氣泡、頭像、載入動畫、進場動畫、響應式樣式
 * @depends : ['css/variables.css']
 */

/* ========================================
   Chat Messages Container
   ======================================== */
.chat-messages {
  flex: 1;
  padding: 16px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: linear-gradient(180deg, #fdf8f3 0%, #fffaf5 100%);
}

.chat-messages::-webkit-scrollbar {
  width: 4px;
}

.chat-messages::-webkit-scrollbar-thumb {
  background: rgba(210, 105, 30, 0.2);
  border-radius: 4px;
}

/* ========================================
   Message Bubbles
   ======================================== */
.chat-message {
  display: flex;
  max-width: 85%;
  gap: 8px;
  align-items: flex-end;
  animation: msgFadeIn 0.3s ease-out;
}

.chat-message.user {
  align-self: flex-end;
  flex-direction: row-reverse;
}

.chat-message.bot {
  align-self: flex-start;
}

/* Bot avatar next to messages */
.msg-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, #d2691e 0%, #a0522d 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: #fff;
  box-shadow: 0 2px 6px rgba(210, 105, 30, 0.25);
}

.message-content {
  padding: 10px 14px;
  border-radius: 16px;
  font-size: 0.875rem;
  line-height: 1.6;
  word-break: break-word;
}

.chat-message.user .message-content {
  background: linear-gradient(135deg, #d2691e 0%, #a0522d 100%);
  color: #fff;
  border-bottom-right-radius: 4px;
  box-shadow: 0 2px 8px rgba(210, 105, 30, 0.2);
}

.chat-message.bot .message-content {
  background: #fff;
  color: #3e2723;
  border: 1px solid rgba(210, 105, 30, 0.12);
  border-bottom-left-radius: 4px;
  box-shadow: 0 1px 4px rgba(62, 39, 35, 0.06);
}

/* ========================================
   Loading Animation
   ======================================== */
.chat-message.loading .message-content {
  padding: 14px 18px;
}

.loading-dots {
  display: flex;
  gap: 5px;
}

.loading-dots span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #d2691e;
  animation: loadingBounce 1.4s infinite ease-in-out both;
}

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

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

/* ========================================
   Animations
   ======================================== */
@keyframes msgFadeIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 480px) {
  .chat-window {
    right: 12px;
    left: 12px;
    bottom: 80px;
    width: auto;
    height: 60vh;
  }

  .chat-toggle {
    width: 55px;
    height: 55px;
  }

  .chat-widget-container {
    right: 16px;
    bottom: calc(16px + env(safe-area-inset-bottom, 0px));
  }

  .msg-avatar {
    width: 24px;
    height: 24px;
  }

  .msg-avatar svg {
    width: 16px;
    height: 16px;
  }
}