.glass-btn {
  position: relative;
  padding: 16px 30px;
  font-size: 17px;
  color: #fff;
  border: none;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  backdrop-filter: blur(15px);
  cursor: pointer;
  box-shadow:
    0 10px 20px rgba(0, 0, 0, 0.1),
    inset 0 0 0 1px rgba(255, 255, 255, 0.15);
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  font-family: Arial, sans-serif;
  letter-spacing: 0.5px;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.glass-btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.3),
    transparent
  );
  transition: 0.6s;
}

.glass-btn::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    circle at center,
    rgba(255, 255, 255, 0.1) 0%,
    transparent 70%
  );
  opacity: 0;
  transition: opacity 0.4s ease;
}

.glass-btn:hover {
  transform: translateY(-3px) scale(1.02);
  background: rgba(255, 255, 255, 0.15);
  box-shadow:
    0 15px 30px rgba(0, 0, 0, 0.15),
    inset 0 0 0 1px rgba(255, 255, 255, 0.2);
  letter-spacing: 1.5px;
}

.glass-btn:hover::before {
  left: 100%;
}

.glass-btn:hover::after {
  opacity: 1;
}

.glass-btn:active {
  transform: translateY(1px) scale(0.98);
  box-shadow:
    0 5px 15px rgba(0, 0, 0, 0.1),
    inset 0 0 0 1px rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.2);
}

.glass-btn span {
  position: relative;
  z-index: 1;
  font-weight: 500;
}

@keyframes gradientBG {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}