/* Craft gallery */

.op-craft {
  padding: 10rem 9rem;
  background: var(--white);
}

.op-craft--grey {
  background: var(--grey);
}

.op-craft__inner {
  max-width: var(--container-size-xl);
  margin: 0 auto;
}

.op-craft__title {
  font-family: var(--font-primary);
  font-style: italic;
  font-weight: 500;
  font-size: 1.4rem;
  line-height: 1.357;
  letter-spacing: 0.56rem;
  color: var(--black);
  text-transform: uppercase;

  margin: 0 0 10rem;
}

/* Layout: 2 halves */
.op-craft__layout {
  display: grid;
  grid-template-columns: 1fr 1.35fr;
  gap: 8rem;
  align-items: start;
}

/* Tabs */
.op-craft__tabs {
  width: 100%;
}

.op-craft--grey .op-craft__tab {
  background: var(--grey);
}

.op-craft__tab {
  background: var(--white);
}

.op-craft__tab-head {
  width: 100%;
  height: 9.3rem; /* closed height */
  padding: 0 3rem;
  background: transparent;
  border: none;
  cursor: pointer;

  display: flex;
  align-items: center;
  justify-content: flex-start;

  transition: background 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.op-craft__tab-head:hover {
  background: rgba(0, 0, 0, 0.03);
}

.op-craft__tab-title {
  font-family: var(--font-primary);
  font-style: italic;
  font-weight: 500;
  font-size: 2.4rem;
  line-height: 1.375;
  letter-spacing: 0.24rem;
  color: var(--black);
}

/* Accordion animation (grid trick) */
.op-craft__tab-body {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.35s cubic-bezier(0.4, 0, 0.2, 1),
    opacity 0.35s ease;
  opacity: 0;
}

.op-craft__tab-body-inner {
  overflow: hidden;
  padding: 0 3rem 0;
}

.op-craft__tab-text {
  margin: 0 0 3rem; /* 50px gap above text when open + bottom breathing */
  font-family: var(--font-primary);
  font-style: normal;
  font-weight: 300;
  font-size: 1.4rem;
  line-height: 1.357;
  letter-spacing: 0.14rem;
  color: var(--black);
}

.op-craft__tab.is-active .op-craft__tab-body {
  grid-template-rows: 1fr;
  opacity: 1;
}

/* Gallery */
.op-craft__gallery {
  display: grid;
  grid-template-columns: 7.7rem 1fr;
  gap: 2rem; /* 20px between thumbs and main */
  align-items: start;
}

.op-craft__thumbs {
  display: flex;
  flex-direction: column;
  gap: 2rem; /* 20px */
}

.op-craft__thumb-btn {
  width: 7.7rem;
  height: 8.2rem;
  padding: 0;
  border: none;
  background: transparent;
  border-radius: 0.6rem;
  overflow: hidden;
  cursor: pointer;

  opacity: 0.7;
  transform: translateZ(0);
  transition: opacity 0.35s ease, transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: opacity, transform;
}

.op-craft__thumb-btn:hover {
  opacity: 0.95;
  transform: translateX(0.2rem);
}

.op-craft__thumb-btn.is-active {
  opacity: 1;
  outline: 0.1rem solid rgba(255, 255, 255, 0); /* placeholder */
}

/* Thumbs: gentle fade + stagger on tab change */
.op-craft__thumb-btn.is-enter {
  opacity: 0;
  transform: translateY(0.4rem);
}

.op-craft__thumb-btn.is-enter.is-enter-active {
  opacity: 0.7;
  transform: translateY(0);
}

.op-craft__thumb-btn.is-leave {
  opacity: 0;
  transform: translateY(-0.4rem);
}

.op-craft__thumb-btn.is-enter.is-enter-active:hover {
  opacity: 0.95;
  transform: translateX(0.2rem);
}

.op-craft__thumb-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transform: scale(1.2);
}

/* Main image stage */
.op-craft__stage {
  width: 100%;
}

.op-craft__stage-frame {
  width: 100%;
  height: 65rem;
  border-radius: 0.6rem;
  overflow: hidden;
  background: #f3f3f3;
  position: relative;
}

.op-craft__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 4rem;
  height: 4rem;
  border: none;
  background: none;
  color: var(--black);
  display: grid;
  place-items: center;
  cursor: pointer;
  z-index: 3;
  opacity: 0.9;
  transition: transform 0.35s cubic-bezier(0.2, 0.8, 0.2, 1), opacity 0.35s;
}

.op-craft__nav:hover {
  opacity: 1;
  transform: translateY(-50%) scale(1.08);
}

.op-craft__nav--prev {
  left: 1.6rem;
}

.op-craft__nav--next {
  right: 1.6rem;
}

.op-craft__nav-icon {
  font-family: var(--font-secondary);
  font-size: 1.5rem;
  line-height: 1;
}

.op-craft__stage-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;

  will-change: transform, opacity;
  transform: translateX(0);
  opacity: 1;
}

/* Slide-in animation classes */
.op-craft__stage-img.is-exit {
  transform: translateX(-1.2rem);
  opacity: 0;
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.35s ease;
}

.op-craft__stage-img.is-enter {
  transform: translateX(1.2rem);
  opacity: 0;
}

.op-craft__stage-img.is-enter-active {
  transform: translateX(0);
  opacity: 1;
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.35s ease;
}

@media (max-width: 1200px) {
  .op-craft__title {
    margin-bottom: 1rem;
  }

  .op-craft__layout {
    grid-template-columns: 1fr;
    gap: 4rem;
  }

  .op-craft__tabs {
    width: 100%;
  }

  .op-craft__tab-head {
    padding: 0;
  }

  .op-craft__tab-head:hover,
  .op-craft__tab.is-active .op-craft__tab-head {
    background: transparent;
  }

  .op-craft__tab-body-inner {
    padding: 0 0 2rem;
  }

  .op-craft__gallery {
    margin-top: 3rem;
    grid-template-columns: 1fr;
  }

  .op-craft__thumbs {
    display: none;
  }

  .op-craft__stage-frame {
    height: 48rem;
  }

  .op-craft__nav {
    border: none;
    background: transparent;
  }

  .op-craft__nav:hover {
    border: none;
    background: transparent;
    transform: translateY(-50%) !important;
  }

  .op-craft__nav--prev {
    left: 0;
  }

  .op-craft__nav--next {
    right: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .op-craft__tab-body {
    transition: none;
  }
  .op-craft__thumb-btn {
    transition: none;
  }
  .op-craft__stage-img.is-exit,
  .op-craft__stage-img.is-enter-active {
    transition: none;
  }
}