* {
  margin: 0;
  box-sizing: border-box;
  font-family: "Noto Sans Thai", sans-serif;
}

body::-webkit-scrollbar {
  display: none;
}

.container {
  width: 100%;
  max-width: 1400px;
  margin: auto;
  padding: 0 2rem;
}

@media screen and (max-width: 1024px) {
  .container {
    padding: 0 1.5rem;
  }
}

@media screen and (max-width: 768px) {
  .container {
    padding: 0 1rem;
  }
}

@media screen and (max-width: 480px) {
  .container {
    padding: 0 0.5rem;
  }
}

/*** back to top ***/
#backToTopBtn {
  display: block;
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 99;
  border: none;
  outline: none;
  background-color: #5089df;
  color: white;
  cursor: pointer;
  padding: 10px 15px;
  border-radius: 50%;
  font-size: 18px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease-in-out, visibility 0.3s ease-in-out;
}

/* เอฟเฟกต์เมื่อปุ่มปรากฏ */
#backToTopBtn.show {
  opacity: 1;
  visibility: visible;
}

#backToTopBtn:hover {
  background-color: #5089df;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.animate-fadeIn {
  animation: fadeIn 0.35s ease-out;
}

@keyframes fadeOut {
  from {
    opacity: 1;
    transform: translateY(0);
  }
  to {
    opacity: 0;
    transform: translateY(-10px);
  }
}

.animate-fadeOut {
  animation: fadeOut 0.35s ease-out;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-slideIn {
  animation: slideIn 0.35s ease-out;
}

@keyframes slideOut {
  from {
    opacity: 1;
    transform: translateY(0);
  }
  to {
    opacity: 0;
    transform: translateY(20px);
  }
}

.animate-slideOut {
  animation: slideOut 0.35s ease-out;
}

@keyframes zoomIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.animate-zoomIn {
  animation: zoomIn 0.35s ease-out;
}

@keyframes zoomOut {
  from {
    opacity: 1;
    transform: scale(1);
  }
  to {
    opacity: 0;
    transform: scale(0.95);
  }
}

.animate-zoomOut {
  animation: zoomOut 0.35s ease-out;
}