/* =========================================================
   ARTECH Animation Only
   Chỉ thêm hiệu ứng, không thay đổi nội dung / bố cục HTML.
   ========================================================= */

:root {
  --artech-anim-ease: cubic-bezier(.2,.8,.2,1);
  --artech-anim-time: 1s;
}

/* Header vào trang mượt hơn */
.header {
  animation: artechHeaderDrop .58s var(--artech-anim-ease) both;
}

.top-line {
  background-size: 220% 100%;
  animation: artechLineFlow 5.5s linear infinite;
}

/* Reveal khi cuộn */
html.artech-anim-ready .anim-reveal {
  opacity: 0;
  transform: translate3d(0, 26px, 0);
  filter: blur(5px);
  will-change: opacity, transform, filter;
}

html.artech-anim-ready .anim-reveal.anim-in {
  opacity: 1;
  transform: translate3d(0, 0, 0);
  filter: blur(0);
  transition:
    opacity var(--artech-anim-time) var(--artech-anim-ease),
    transform var(--artech-anim-time) var(--artech-anim-ease),
    filter var(--artech-anim-time) var(--artech-anim-ease);
  transition-delay: var(--anim-delay, 0ms);
}

/* Hero: chữ và ảnh vào trang nhẹ */
.hero-copy > *,
.hero-content > *,
.slide-content > * {
  animation: artechFadeUp .72s var(--artech-anim-ease) both;
}

.hero-copy > *:nth-child(2),
.hero-content > *:nth-child(2),
.slide-content > *:nth-child(2) {
  animation-delay: .08s;
}

.hero-copy > *:nth-child(3),
.hero-content > *:nth-child(3),
.slide-content > *:nth-child(3) {
  animation-delay: .16s;
}

.hero-copy > *:nth-child(4),
.hero-content > *:nth-child(4),
.slide-content > *:nth-child(4) {
  animation-delay: .24s;
}

.hero-copy > *:nth-child(5),
.hero-content > *:nth-child(5),
.slide-content > *:nth-child(5) {
  animation-delay: .32s;
}

/* Robot / ảnh chính nổi nhẹ */
.hero-robot,
.center-robot img,
.hero-photo img,
.cta-img,
.vision-robot,
.about-visual img,
.product-hero img {
  animation: artechFloat 5.8s ease-in-out infinite;
}

/* Card hover chuyên nghiệp */
.product-card,
.service-card,
.feature-card,
.info-card,
.value-card,
.app-card,
.eventbot-card,
.process-grid article,
.price-card,
.faq-item,
.project-card,
.news-card,
.article-card,
.contact-card,
.stat-card,
.cap-card,
.spec-grid article,
.feature-strip article,
.bottom-box,
.robot-info-box,
.hero-side-cards article,
.hero-stats article,
.logo-card,
.gallery-card {
  transition:
    transform .28s var(--artech-anim-ease),
    box-shadow .28s var(--artech-anim-ease),
    border-color .28s var(--artech-anim-ease),
    filter .28s var(--artech-anim-ease);
  will-change: transform;
}

.product-card:hover,
.service-card:hover,
.feature-card:hover,
.info-card:hover,
.value-card:hover,
.app-card:hover,
.eventbot-card:hover,
.process-grid article:hover,
.price-card:hover,
.faq-item:hover,
.project-card:hover,
.news-card:hover,
.article-card:hover,
.stat-card:hover,
.cap-card:hover,
.spec-grid article:hover,
.feature-strip article:hover,
.bottom-box:hover,
.robot-info-box:hover,
.hero-side-cards article:hover,
.hero-stats article:hover,
.logo-card:hover,
.gallery-card:hover {
  transform: translateY(-7px);
  box-shadow: 0 24px 58px rgba(1, 39, 116, .15);
  border-color: rgba(0, 166, 229, .34);
}

/* Ảnh trong card zoom nhẹ khi hover */
.product-card img,
.service-card img,
.app-card img,
.project-card img,
.news-card img,
.article-card img,
.gallery-card img,
.spec-grid article img {
  transition: transform .45s var(--artech-anim-ease), filter .45s var(--artech-anim-ease);
}

.product-card:hover img,
.service-card:hover img,
.app-card:hover img,
.project-card:hover img,
.news-card:hover img,
.article-card:hover img,
.gallery-card:hover img,
.spec-grid article:hover img {
  transform: scale(1.035);
  filter: saturate(1.06) contrast(1.02);
}

/* Nút có ánh sáng quét */
.btn,
.login,
.lienhe,
.mobile-quote-btn {
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.btn::after,
.login::after,
.lienhe::after,
.mobile-quote-btn::after {
  content: "";
  position: absolute;
  inset: -60% auto -60% -55%;
  width: 42%;
  transform: skewX(-22deg);
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.55), transparent);
  opacity: 0;
  pointer-events: none;
  z-index: -1;
}

.btn:hover::after,
.login:hover::after,
.lienhe:hover::after,
.mobile-quote-btn:hover::after {
  animation: artechShine .85s ease;
}

/* Menu dropdown mở mềm hơn */
.dropdown-menu,
.sub-menu,
.mobile-menu {
  transition:
    opacity .28s var(--artech-anim-ease),
    transform .28s var(--artech-anim-ease),
    visibility .28s var(--artech-anim-ease);
}

/* FAQ mở mượt */
.faq-answer {
  transition: max-height .35s var(--artech-anim-ease), opacity .35s var(--artech-anim-ease);
}

.faq-item:not(.open) .faq-answer {
  opacity: 0;
}

.faq-item.open .faq-answer {
  opacity: 1;
}

/* Icon liên hệ nổi nhẹ */
.floating-contact,
.back-top {
  animation: artechFloatSmall 4.6s ease-in-out infinite;
}

/* Slider ảnh mượt hơn */
.slide.active img {
  animation: artechHeroZoom 7s ease both;
}

/* Keyframes */
@keyframes artechHeaderDrop {
  from {
    opacity: 0;
    transform: translateY(-16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes artechLineFlow {
  0% {
    background-position: 0% 50%;
  }
  100% {
    background-position: 220% 50%;
  }
}

@keyframes artechFadeUp {
  from {
    opacity: 0;
    transform: translateY(18px);
    filter: blur(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
  }
}

@keyframes artechFloat {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

@keyframes artechFloatSmall {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-4px);
  }
}

@keyframes artechShine {
  0% {
    left: -55%;
    opacity: 0;
  }
  20% {
    opacity: .95;
  }
  100% {
    left: 125%;
    opacity: 0;
  }
}

@keyframes artechHeroZoom {
  from {
    transform: scale(1.018);
  }
  to {
    transform: scale(1);
  }
}

/* Tôn trọng thiết lập giảm chuyển động của người dùng */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
  }

  html.artech-anim-ready .anim-reveal {
    opacity: 1 !important;
    transform: none !important;
    filter: none !important;
  }
}