html {
      scroll-behavior: smooth;
    }
    

/* Custom fade-in and fade-out animation */
    .fade-in {
      animation: fadeIn 0.5s forwards;
    }

    .fade-out {
      animation: fadeOut 0.5s forwards;
    }

    @keyframes fadeIn {
      from { opacity: 0; transform: scale(0.9); }
      to { opacity: 1; transform: scale(1); }
    }

    @keyframes fadeOut {
      from { opacity: 1; transform: scale(1); }
      to { opacity: 0; transform: scale(0.9); }
    }


/* button book popup */
.gradient-button {
  position: relative;
  padding: 16px 32px;
  font-size: 15px;
  font-weight: bold;
  color: white;
  background: transparent;
  border: none;
  cursor: pointer;
  border-radius: 50px;
  overflow: hidden;
  transition: transform 0.2s ease;
}

.gradient-button:hover {
  transform: scale(1.03);
}

.gradient-button::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: conic-gradient(
    from 0deg,
    #ff6b6b,
    #4ecdc4,
    #45b7d1,
    #96ceb4,
    #feca57,
    #ff9ff3,
    #ff6b6b
  );
  z-index: -2;
  filter: blur(10px);
  transform: rotate(0deg);
  transition: transform 1.5s ease-in-out;
}

.gradient-button:hover::before {
  transform: rotate(180deg);
}

.gradient-button::after {
  content: "";
  position: absolute;
  inset: 3px;
  background: black;
  border-radius: 47px;
  z-index: -1;
  filter: blur(5px);
}

.gradient-text {
  color: transparent;
  background: conic-gradient(
    from 0deg,
    #ff6b6b,
    #4ecdc4,
    #45b7d1,
    #96ceb4,
    #feca57,
    #ff9ff3,
    #ff6b6b
  );
  background-clip: text;
  filter: hue-rotate(0deg);
}

.gradient-button:hover .gradient-text {
  animation: hue-rotating 2s linear infinite;
}

.gradient-button:active {
  transform: scale(0.99);
}

@keyframes hue-rotating {
  to {
    filter: hue-rotate(360deg);
  }
}