css制作灯光

使用CSS制作灯光效果

通过CSS的box-shadow和filter属性可以模拟灯光效果，适用于按钮、图标或背景元素的光照增强。

基础灯光效果（发光按钮）

.glow-button {
  background-color: #4CAF50;
  border: none;
  padding: 15px 32px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
  margin: 4px 2px;
  cursor: pointer;
  border-radius: 8px;
  box-shadow: 0 0 20px rgba(76, 175, 80, 0.6);
  transition: box-shadow 0.3s ease;
}

.glow-button:hover {
  box-shadow: 0 0 30px rgba(76, 175, 80, 0.9);
}

霓虹灯文字效果

结合text-shadow和动画实现闪烁霓虹灯：

.neon-text {
  color: #fff;
  text-shadow: 
    0 0 5px #fff,
    0 0 10px #fff,
    0 0 20px #ff00de,
    0 0 40px #ff00de;
  animation: flicker 1.5s infinite alternate;
}

@keyframes flicker {
  0%, 19%, 21%, 23%, 25%, 54%, 56%, 100% {
    text-shadow: 
      0 0 5px #fff,
      0 0 10px #fff,
      0 0 20px #ff00de,
      0 0 40px #ff00de;
  }
  20%, 24%, 55% {
    text-shadow: none;
  }
}

聚光灯效果

使用径向渐变和混合模式创建聚焦光斑：

.spotlight {
  position: relative;
  height: 300px;
  background: #222;
}

.spotlight::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 200px;
  height: 200px;
  background: radial-gradient(
    circle closest-side,
    rgba(255,255,255,0.8),
    transparent
  );
  transform: translate(-50%, -50%);
  mix-blend-mode: overlay;
}

悬停灯光追踪

通过CSS变量实现鼠标悬停时的动态光照：

.light-track {
  --x: 50%;
  --y: 50%;
  position: relative;
  background: #333;
  height: 200px;
  overflow: hidden;
}

.light-track::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(
    circle at var(--x) var(--y),
    rgba(255,255,255,0.3),
    transparent 60%
  );
  pointer-events: none;
}

.light-track:hover::after {
  background: radial-gradient(
    circle at var(--x) var(--y),
    rgba(255,255,255,0.6),
    transparent 60%
  );
}

JavaScript配合（可选）：

document.querySelector('.light-track').addEventListener('mousemove', (e) => {
  const rect = e.target.getBoundingClientRect();
  e.target.style.setProperty('--x', `${e.clientX - rect.left}px`);
  e.target.style.setProperty('--y', `${e.clientY - rect.top}px`);
});

3D灯泡效果

结合多重阴影和过渡创建立体灯泡：

.light-bulb {
  width: 80px;
  height: 80px;
  background: #f5f5f5;
  border-radius: 50%;
  position: relative;
  box-shadow: 
    inset 0 -5px 20px rgba(0,0,0,0.1),
    inset 0 10px 30px rgba(255,255,255,0.8),
    0 0 0 5px rgba(255,255,255,0.1),
    0 5px 20px rgba(255,200,0,0.3);
  transition: all 0.3s ease;
}

.light-bulb::after {
  content: "";
  position: absolute;
  top: 15%;
  left: 15%;
  width: 70%;
  height: 70%;
  border-radius: 50%;
  background: radial-gradient(circle at center, #fff, transparent 60%);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.light-bulb.on {
  box-shadow: 
    inset 0 -5px 20px rgba(0,0,0,0.1),
    inset 0 10px 30px rgba(255,255,255,0.8),
    0 0 0 5px rgba(255,255,255,0.1),
    0 5px 50px rgba(255,200,0,0.8);
}

.light-bulb.on::after {
  opacity: 0.6;
}