/* Magnetic Button - 磁性按钮 */
/* 需要少量 JS 实现磁性效果，这里提供纯 CSS hover 版 + JS 接口 */

.magnetic-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 36px;
  border: none;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  color: #fff;
  letter-spacing: 0.02em;
  overflow: hidden;
}

.magnetic-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50px;
  background: linear-gradient(135deg, #818cf8, #a78bfa);
  opacity: 0;
  transition: opacity 0.3s;
}

.magnetic-btn:hover::before {
  opacity: 1;
}

.magnetic-btn:hover {
  transform: scale(1.05);
  box-shadow: 
    0 10px 40px rgba(99, 102, 241, 0.4),
    0 0 0 4px rgba(99, 102, 241, 0.1);
}

.magnetic-btn:active {
  transform: scale(0.98);
}

.magnetic-btn__text {
  position: relative;
  z-index: 1;
}

/* 变体 */
.magnetic-btn--outline {
  background: transparent;
  border: 2px solid #6366f1;
  color: #6366f1;
}

.magnetic-btn--outline::before {
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
}

.magnetic-btn--outline:hover {
  color: #fff;
  box-shadow: 0 10px 40px rgba(99, 102, 241, 0.3);
}

.magnetic-btn--ghost {
  background: rgba(99, 102, 241, 0.1);
  color: #818cf8;
  border: 1px solid rgba(99, 102, 241, 0.2);
}

.magnetic-btn--ghost:hover {
  background: rgba(99, 102, 241, 0.2);
  color: #fff;
  box-shadow: 0 10px 40px rgba(99, 102, 241, 0.2);
}

.magnetic-btn--glow {
  background: linear-gradient(135deg, #6366f1, #ec4899);
  box-shadow: 0 0 20px rgba(99, 102, 241, 0.3);
}

.magnetic-btn--glow:hover {
  box-shadow: 
    0 0 40px rgba(99, 102, 241, 0.5),
    0 0 80px rgba(236, 72, 153, 0.3);
}

/* 粒子效果层 */
.magnetic-btn__particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  border-radius: 50px;
}

.magnetic-btn__particle {
  position: absolute;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.6);
  opacity: 0;
}

/* JS 磁性效果的 CSS 接口 */
.magnetic-btn--magnetic {
  transition: transform 0.15s ease-out;
}