/* AI 悬浮按钮 — 忠于 H5 原型：渐变流动背景 + 机器人 SVG */
/* H5: 56px → 56×2×0.875 = 98rpx */

.ai-float-btn-container {
  position: fixed;
  right: 28rpx;
  z-index: 100;
}

.ai-float-btn {
  width: 98rpx;
  height: 98rpx;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  /* 渐变动画背景 — 忠于 H5 原型 */
  background: linear-gradient(135deg, #667eea 0%, #764ba2 25%, #f093fb 50%, #f5576c 75%, #667eea 100%);
  background-size: 400% 400%;
  animation: gradientShift 8s ease infinite;
  box-shadow: 0 8rpx 40rpx rgba(102, 126, 234, 0.4);
}

.ai-float-btn:active {
  transform: scale(0.95);
}

/* 高光叠加层 */
.ai-float-btn-highlight {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(145deg, rgba(255,255,255,0.2) 0%, transparent 50%, rgba(0,0,0,0.1) 100%);
  border-radius: 50%;
  pointer-events: none;
}

/* 背景渐变流动动画 */
@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  25% { background-position: 50% 100%; }
  50% { background-position: 100% 50%; }
  75% { background-position: 50% 0%; }
  100% { background-position: 0% 50%; }
}

/* SVG 图标 H5: 30px → 52rpx */
.ai-icon-svg {
  width: 52rpx;
  height: 52rpx;
  position: relative;
  z-index: 1;
}