.k3ds {
  --k3ds-bg: #eee5df;
  --k3ds-card-w: 220px;
  --k3ds-card-h: 404px;
  --k3ds-radius: 24px;
  --k3ds-gap: 28px;
  --k3ds-height: 543px;
  --k3ds-speed: 650ms;
  position: relative;
  width: 100%;
  min-width: 0;
  background: var(--k3ds-bg);
  overflow: hidden;
  isolation: isolate;
  border-radius: 8px;
}

.k3ds,
.k3ds * { box-sizing: border-box; }

.k3ds__viewport {
  margin-top: -35px;
  padding: 10px;
  position: relative;
  width: 100%;
  height: var(--k3ds-height);
  overflow: hidden;
  perspective: 950px;
  perspective-origin: 50% 52.5%;
  touch-action: pan-y;
  user-select: none;
  -webkit-user-select: none;
}

.k3ds__stage {
  position: relative;
  left: 0;
  width: min(100%, 980px);
  height: 100%;
  margin: 0 auto;
  transform-style: preserve-3d;
}

.k3ds__slide {
  position: absolute;
  left: 50%;
  top: calc(50% + 14px);
  width: var(--k3ds-card-w);
  height: var(--k3ds-card-h);
  margin: 0;
  opacity: 0;
  z-index: 0;
  transform: translate3d(-50%, -50%, -180px) scale(.78);
  transform-style: preserve-3d;
  transform-origin: center center;
  backface-visibility: hidden;
  pointer-events: none;
  will-change: left, transform, opacity, filter;
  transition:
    left var(--k3ds-speed) cubic-bezier(.22, .61, .36, 1),
    transform var(--k3ds-speed) cubic-bezier(.22, .61, .36, 1),
    opacity var(--k3ds-speed) ease,
    filter var(--k3ds-speed) ease;
}

/* Hai thẻ chính: mọi thông số giống nhau, chỉ đảo dấu trục X và góc xoay. */
.k3ds__slide[data-state="front-left"],
.k3ds__slide[data-state="front-right"] {
  opacity: 1;
  z-index: 5;
  pointer-events: auto;
  filter: brightness(1) saturate(1);
}

.k3ds__slide[data-state="front-left"] {
  transform:
    translate3d(calc(-100% - (var(--k3ds-gap) / 2)), calc(-50% - 2px), 0)
    rotateY(-17deg)
    scale(.99);
}

.k3ds__slide[data-state="front-right"] {
  transform:
    translate3d(calc(var(--k3ds-gap) / 2), calc(-50% - 2px), 0)
    rotateY(17deg)
    scale(.99);
}

/* Hai thẻ ngoài: cùng khoảng cách tới tâm, độ sâu, độ sáng và tỷ lệ. */
.k3ds__slide[data-state="far-left"],
.k3ds__slide[data-state="far-right"] {
  opacity: .96;
  z-index: 3;
  pointer-events: auto;
  filter: brightness(.86) saturate(.91);
}

.k3ds__slide[data-state="far-left"] {
  transform:
    translate3d(calc(-50% - var(--k3ds-card-w) - 55px), calc(-50% - 2px), -16px)
    rotateY(86deg)
    scale(.9);
}

.k3ds__slide[data-state="far-right"] {
  transform:
    translate3d(calc(-50% + var(--k3ds-card-w) + 55px), calc(-50% - 2px), -16px)
    rotateY(-86deg)
    scale(.9);
}

.k3ds__slide[data-state="hidden-left"] {
  opacity: 0;
  transform: translate3d(calc(-205% - var(--k3ds-gap)), -50%, -150px) rotateY(86deg) scale(.78);
}

.k3ds__slide[data-state="hidden-right"] {
  opacity: 0;
  transform: translate3d(calc(150% + var(--k3ds-gap)), -50%, -150px) rotateY(-86deg) scale(.78);
}

.k3ds__slide[data-state="single"] {
  opacity: 1;
  z-index: 5;
  pointer-events: auto;
  transform: translate3d(-50%, -50%, 0) rotateY(0) scale(1);
}

.k3ds__card {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
  color: #fff;
  text-decoration: none !important;
  overflow: hidden;
  border-radius: var(--k3ds-radius);
  background: #1a1a1a;
  box-shadow:
    0 15px 28px rgba(49, 36, 28, .13),
    0 3px 8px rgba(49, 36, 28, .10),
    inset 0 0 0 1px rgba(255, 255, 255, .20);
  transform: translateZ(0);
}

.k3ds__card::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
  border-radius: inherit;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.18);
}

.k3ds__image {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: cover;
  object-position: center;
  transform: scale(1.002);
  transition: transform 900ms cubic-bezier(.22, .61, .36, 1);
}

.k3ds__slide[data-state="front-left"] .k3ds__card:hover .k3ds__image,
.k3ds__slide[data-state="front-right"] .k3ds__card:hover .k3ds__image,
.k3ds__slide[data-state="single"] .k3ds__card:hover .k3ds__image { transform: scale(1.025); }

.k3ds__shade {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(180deg,
    rgba(0,0,0,0) 50%,
    rgba(0,0,0,.05) 61%,
    rgba(0,0,0,.33) 78%,
    rgba(0,0,0,.82) 100%);
  pointer-events: none;
}

.k3ds__content {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  padding: 22px 26px 25px 16px;
  text-align: left;
  color: #fff;
  text-shadow: 0 1px 8px rgba(0,0,0,.58);
}

.k3ds__slide[data-state="front-left"] .k3ds__content,
.k3ds__slide[data-state="front-right"] .k3ds__content {
  transform: translateY(0);
}

.k3ds__title {
  margin: 0 0 4px;
  padding: 0;
  color: inherit;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 19px;
  line-height: 1.04;
  font-weight: 800;
  letter-spacing: -.035em;
  text-transform: none;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.k3ds__subtitle {
  margin: 0;
  padding: 0;
  color: rgba(255,255,255,.94);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 15px;
  line-height: 1.08;
  font-weight: 500;
  letter-spacing: -.018em;
}

.k3ds__arrow {
  position: absolute;
  top: 50%;
  z-index: 20;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  margin: 0;
  padding: 0;
  border: 1px solid rgba(255,255,255,.6);
  border-radius: 999px;
  color: #352c27;
  background: rgba(255,255,255,.74);
  box-shadow: 0 8px 28px rgba(48,35,28,.14);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  cursor: pointer;
  transform: translateY(-50%);
  transition: transform 180ms ease, background 180ms ease;
}
.k3ds__arrow:hover { background: rgba(255,255,255,.94); transform: translateY(-50%) scale(1.06); }
.k3ds__arrow:focus-visible,.k3ds__dot:focus-visible,.k3ds__card:focus-visible { outline: 3px solid rgba(255,112,42,.9); outline-offset: 3px; }
.k3ds__arrow svg { width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round; }
.k3ds__arrow--prev { left: max(14px, calc(50% - 430px)); }
.k3ds__arrow--next { right: max(14px, calc(50% - 430px)); }

.k3ds__dots { position:absolute;left:50%;bottom:18px;z-index:20;display:flex;align-items:center;justify-content:center;gap:8px;transform:translateX(-50%); }
.k3ds__dot { width:8px;height:8px;min-width:0;min-height:0;margin:0;padding:0;border:0;border-radius:999px;background:rgba(63,49,40,.26);cursor:pointer;transition:width 220ms ease,background 220ms ease,transform 220ms ease; }
.k3ds__dot.is-active { width:24px;background:rgba(63,49,40,.82); }
.k3ds.is-dragging .k3ds__slide { transition:none; }
.k3ds-empty { padding:18px 22px;border:1px dashed #c7b9af;background:#f7f1ed;color:#5c4b41;font-size:14px; }

@media (max-width: 900px) {
  .k3ds__stage { width:100%; }
}


/* ==========================================================
   TABLET — giữ bố cục 4 thẻ giống desktop
   541–1024px: tablet phổ thông / iPad dọc
   Các biến kích thước dùng !important để ghi đè style inline
   được shortcode/UX Builder sinh trên thẻ .k3ds.
========================================================== */
@media screen and (min-width: 541px) and (max-width: 1024px) {
  .k3ds {
    --k3ds-card-w: clamp(190px, 30vw, 300px) !important;
    --k3ds-card-h: clamp(348px, 55vw, 550px) !important;
    --k3ds-height: clamp(455px, 72vw, 650px) !important;
    --k3ds-gap: clamp(18px, 3vw, 30px) !important;
    --k3ds-tablet-side-offset: clamp(42px, 7vw, 72px);
  }

  .k3ds__viewport {
    perspective: 1050px;
    perspective-origin: 50% 52%;
    margin-top: -80px;
    margin-bottom: -45px;
  }

  .k3ds__stage {
    left: 0;
    width: 100%;
    margin-inline: auto;
  }

  .k3ds__slide {
    left: 50%;
    top: calc(50% + 6px);
  }

  /* Hai thẻ chính đối xứng tuyệt đối qua tâm. */
    .k3ds__slide[data-state="front-left"] {
        transform: translate3d(calc(-86% - (var(--k3ds-gap) / 2)), calc(-50% - 2px), 0) rotateY(-26deg) scale(0.80);
    }

    .k3ds__slide[data-state="front-right"] {
        transform: translate3d(calc(var(--k3ds-gap) / 2), calc(-50% - 2px), 0) rotateY(25deg) scale(.8);
        left: 40%;
    }

  /* Hai thẻ ngoài cùng dùng cùng khoảng cách, chỉ đảo dấu X/góc xoay. */
  .k3ds__slide[data-state="far-left"] {
    transform:
      translate3d(
        calc(-50% - var(--k3ds-card-w) - var(--k3ds-tablet-side-offset)),
        calc(-50% - 2px),
        -18px
      )
      rotateY(84deg)
      scale(.9);
  }

  .k3ds__slide[data-state="far-right"] {
    transform:
      translate3d(
        calc(-50% + var(--k3ds-card-w) + var(--k3ds-tablet-side-offset)),
        calc(-50% - 2px),
        -18px
      )
      rotateY(-84deg)
      scale(.9);
  }

  .k3ds__content {
    padding: clamp(16px, 2.5vw, 24px) clamp(14px, 2.4vw, 24px) clamp(18px, 2.7vw, 26px);
  }

  .k3ds__title {
    font-size: clamp(16px, 2.5vw, 22px);
  }

  /* Class thực tế của plugin là .k3ds__subtitle, không phải description. */
  .k3ds__subtitle {
    font-size: clamp(12px, 1.9vw, 16px);
  }
}

/* iPad Pro / tablet lớn ở chế độ ngang có viewport lớn hơn 1024px. */
@media screen and (min-width: 1025px) and (max-width: 1366px) and (hover: none) and (pointer: coarse) {
  .k3ds {
    --k3ds-card-w: clamp(260px, 23vw, 315px) !important;
    --k3ds-card-h: clamp(475px, 42.3vw, 578px) !important;
    --k3ds-height: clamp(560px, 50vw, 680px) !important;
    --k3ds-gap: clamp(24px, 2.4vw, 34px) !important;
    --k3ds-tablet-side-offset: clamp(64px, 6vw, 84px);
  }

  .k3ds__stage {
    width: 100%;
  }

  .k3ds__slide[data-state="front-left"] {
    transform:
      translate3d(calc(-100% - (var(--k3ds-gap) / 2)), calc(-50% - 2px), 0)
      rotateY(-15deg)
      scale(.98);
  }

  .k3ds__slide[data-state="front-right"] {
    transform:
      translate3d(calc(var(--k3ds-gap) / 2), calc(-50% - 2px), 0)
      rotateY(15deg)
      scale(.98);
  }

  .k3ds__slide[data-state="far-left"] {
    transform:
      translate3d(calc(-50% - var(--k3ds-card-w) - var(--k3ds-tablet-side-offset)), calc(-50% - 2px), -18px)
      rotateY(84deg)
      scale(.9);
  }

  .k3ds__slide[data-state="far-right"] {
    transform:
      translate3d(calc(-50% + var(--k3ds-card-w) + var(--k3ds-tablet-side-offset)), calc(-50% - 2px), -18px)
      rotateY(-84deg)
      scale(.9);
  }
}


@media (max-width: 540px) {
  .k3ds {
    /* Giữ nguyên bố cục PC: 2 thẻ chính ở giữa + 2 cạnh thẻ ngoài. */
    --k3ds-card-w: min(42vw, 220px) !important;
    --k3ds-card-h: min(77vw, 404px) !important;
    --k3ds-height: min(100vw, 500px) !important;
    --k3ds-gap: clamp(10px, 3vw, 18px) !important;
    --k3ds-mobile-edge: clamp(9px, 3.2vw, 15px);
  }

  .k3ds__viewport {
    perspective: 900px;
    perspective-origin: 50% 52%;
  }

  .k3ds__stage {
    left: 0;
    width: 100%;
  }

  .k3ds__slide {
    top: calc(50% + 4px);
  }

  /* Hai thẻ giữa giữ đúng công thức đối xứng của desktop. */
  .k3ds__slide[data-state="front-left"] {
    left: 49%;
    transform: translate3d(calc(-88% - (var(--k3ds-gap) / 2)), calc(-50% - 2px), 0) rotateY(-32deg) scale(.99);
  }

  .k3ds__slide[data-state="front-right"] {
    left: 46%;
    transform: translate3d(calc(var(--k3ds-gap) / 2), calc(-50% - 2px), 0) rotateY(34deg) scale(.99);
  }

  /* Neo hai thẻ ngoài vào hai mép để luôn nhìn thấy trên màn hình hẹp. */
  .k3ds__slide[data-state="far-left"] {
    left: var(--k3ds-mobile-edge);
    transform:
      translate3d(-50%, calc(-50% - 2px), -16px)
      rotateY(86deg)
      scale(.9);
  }

  .k3ds__slide[data-state="far-right"] {
    left: calc(100% - var(--k3ds-mobile-edge));
    transform:
      translate3d(-50%, calc(-50% - 2px), -16px)
      rotateY(-86deg)
      scale(.9);
  }

  .k3ds__content { padding:16px 12px 17px; }
  .k3ds__title { font-size:clamp(13px, 4vw, 18px);white-space:nowrap; }
  .k3ds__subtitle { font-size:clamp(10px, 3.2vw, 14px); }
  .k3ds__arrow--prev { left:8px; }
  .k3ds__arrow--next { right:8px; }
}

@media (prefers-reduced-motion: reduce) {
  .k3ds__slide,.k3ds__image,.k3ds__arrow,.k3ds__dot { transition-duration:1ms !important;animation-duration:1ms !important; }
}