/* pages/chat/chat.wxss */
.container {
  display: flex;
  flex-direction: column;
  height: 100vh;
  background: linear-gradient(180deg, #f8f9ff 0%, #f5f5f5 100%);
}

.messages-container {
  flex: 1;
  padding: 30rpx;
  overflow-y: auto;
}

.messages {
  display: flex;
  flex-direction: column;
  gap: 30rpx;
}

.message-row {
  display: flex;
  align-items: flex-end;
  gap: 16rpx;
}

.row-right {
  flex-direction: row-reverse;
}

.row-left {
  flex-direction: row;
}

.message-item {
  display: flex;
  flex-direction: column;
  max-width: 70%;
  animation: fadeIn 0.3s ease;
}

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

.user-message {
  align-self: flex-end;
}

.user-message .message-content {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: #fff;
  border-radius: 20rpx 20rpx 4rpx 20rpx;
  padding: 20rpx 24rpx;
  box-shadow: 0 4rpx 12rpx rgba(102, 126, 234, 0.3);
}

.assistant-message {
  align-self: flex-start;
}

.assistant-message .message-content {
  background: #fff;
  color: #333;
  border-radius: 20rpx 20rpx 20rpx 4rpx;
  padding: 20rpx 24rpx;
  box-shadow: 0 4rpx 12rpx rgba(0, 0, 0, 0.1);
  border: 1rpx solid #f0f0f0;
}

.avatar {
  width: 56rpx;
  height: 56rpx;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26rpx;
  font-weight: 600;
  color: #fff;
  box-shadow: 0 4rpx 12rpx rgba(0,0,0,0.08);
}

.avatar-user {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.avatar-assistant {
  background: linear-gradient(135deg, #36d1dc 0%, #5b86e5 100%);
}

.message-text {
  font-size: 28rpx;
  line-height: 1.6;
  word-wrap: break-word;
}

.message-time {
  font-size: 22rpx;
  color: #999;
  margin-top: 8rpx;
  padding: 0 8rpx;
}

.user-message .message-time, .time-right {
  text-align: right;
}

.assistant-message .message-time, .time-left {
  text-align: left;
}

.input-container {
  display: flex;
  align-items: center;
  padding: 20rpx 30rpx;
  padding-bottom: calc(20rpx + env(safe-area-inset-bottom));
  background: #fff;
  border-top: 1rpx solid #e0e0e0;
  box-shadow: 0 -4rpx 20rpx rgba(0, 0, 0, 0.05);
}

.input-box {
  flex: 1;
  height: 72rpx;
  padding: 0 24rpx;
  background: #f5f5f5;
  border-radius: 36rpx;
  font-size: 28rpx;
  margin-right: 20rpx;
  transition: background 0.2s ease, box-shadow 0.2s ease;
}

.input-box:focus {
  background: #fff;
  box-shadow: 0 0 0 4rpx rgba(102,126,234,0.15);
}

.send-btn {
  width: 120rpx;
  height: 72rpx;
  line-height: 72rpx;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: #fff;
  border-radius: 36rpx;
  font-size: 28rpx;
  border: none;
  font-weight: 500;
}

.send-btn::after {
  border: none;
}

.send-btn[disabled] {
  background: #ccc;
  color: #999;
}

.loading {
  text-align: center;
  padding: 40rpx;
  font-size: 26rpx;
  color: #999;
}

.empty {
  text-align: center;
  padding: 160rpx 40rpx;
  color: #8b8b8b;
}

.empty-icon { font-size: 120rpx; opacity: 0.25; }
.empty-title { display:block; margin-top: 24rpx; font-size: 30rpx; color:#666; font-weight: 600; }
.empty-tip { display:block; margin-top: 10rpx; font-size: 26rpx; color:#9aa0a6; }