/* ============================================
   COMPONENTS.CSS — Các thành phần dùng lại
   ✅ FIX: Bỏ will-change + backface-visibility hàng loạt
   ============================================ */

.fade-up {
  opacity: 0;
  transform: translateY(36px);
  transition:
    opacity 0.41s cubic-bezier(0.32, 0, 0.26, 1),
    transform 0.61s cubic-bezier(0.32, 0, 0.26, 1);
}

.fade-up.in {
  opacity: 1 !important;
  transform: translateY(0) !important;
}

/* ❌ ĐÃ XÓA block:
   .fade-up, .logo-char, .crossfade-img, .gallery-img {
     will-change: opacity, transform;
     backface-visibility: hidden;
   }
*/

.touch-scale:active {
  transform: scale(0.97);
  transition: transform 100ms cubic-bezier(0.4, 0, 0.2, 1);
}

.focus-ring:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 2px;
}

.hide-scrollbar::-webkit-scrollbar {
  display: none;
}

.hide-scrollbar {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.nav-anim-underline {
  position: relative;
  overflow: hidden;
}

.nav-anim-underline::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1.5px;
  background: var(--ink);
  transform: scaleX(0);
  transition: transform 0.22s cubic-bezier(0.32, 0, 0.26, 1);
  transform-origin: left;
}

@media (pointer: fine) {

  .nav-anim-underline:hover::after,
  .nav-anim-underline:focus::after {
    transform: scaleX(1);
  }
}

.hamburger-bar {
  display: block;
  width: 28px;
  height: 2.5px;
  margin: 4px 0;
  background: var(--ink);
  border-radius: 2px;
  transition: all 0.25s cubic-bezier(0.32, 0, 0.26, 1);
}