/* Banners styles (max banner: 408x544)
   Layout is designed to fit inside Bootstrap .container, like on the screenshot.
*/
.stm-banners{
  --stm-banner-w: 408px;
  --stm-banner-h: 544px;
  --stm-gap: 1.5rem;
  --stm-nav-size: 88px;
}

.stm-banners__outer{
  position: relative;
}

.stm-banners__viewport{
  overflow: hidden;
  outline: none;
}

.stm-banners__track{
  display: flex;
  gap: var(--stm-gap);
  will-change: transform;
  transition: transform 320ms ease;
  padding: 0;
}

/* Slide width is capped at 408px but becomes fluid on small screens */
.stm-banners__slide{
  flex: 0 0 auto;
  width: min(var(--stm-banner-w), 100%);
  max-width: var(--stm-banner-w);
  text-decoration: none;
  color: inherit;
}

.stm-banners__frame{
  width: 100%;
  height: var(--stm-banner-h);
  max-height: var(--stm-banner-h);

  display: flex;
  align-items: center;      /* vertical centering */
  justify-content: center;  /* horizontal centering */

  border-radius: 0.75rem;
  background: #fff;
  box-shadow: 0 10px 26px rgba(0,0,0,.16);
  overflow: hidden;
}

.stm-banners__frame img{
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain; /* fit oversized images into the frame */
  display: block;
}

/* Navigation buttons: big white circles like in the screenshot */
.stm-banners__nav{
  position: absolute;
  top: 50%;
  z-index: 2;

  width: var(--stm-nav-size);
  height: var(--stm-nav-size);
  border-radius: 999px;

  border: none;
  background: #fff;
  box-shadow: 0 10px 22px rgba(0,0,0,.18);
  display: grid;
  place-items: center;

  cursor: pointer;
  user-select: none;
}

.stm-banners__nav--prev{
  left: 0;
  transform: translate(-50%, -50%);
}

.stm-banners__nav--next{
  right: 0;
  transform: translate(50%, -50%);
}

.stm-banners__nav:hover{
  box-shadow: 0 12px 26px rgba(0,0,0,.22);
}

.stm-banners__nav:active{
  transform: translate(-50%, -50%) scale(0.98);
}
.stm-banners__nav--next:active{
  transform: translate(50%, -50%) scale(0.98);
}

.stm-banners__nav:focus-visible{
  outline: 3px solid rgba(13,110,253,.45); /* bootstrap primary-ish */
  outline-offset: 4px;
}

.stm-banners__nav-icon{
  width: 34px;
  height: 34px;
}

/* Keyboard focus on the viewport */
.stm-banners__viewport:focus-visible{
  outline: 3px solid rgba(13,110,253,.35);
  outline-offset: 6px;
  border-radius: 0.75rem;
}

/* Small screens: keep arrows inside so they don't get cut */
@media (max-width: 575.98px){
  .stm-banners{
    --stm-nav-size: 64px;
    --stm-gap: 1rem;
  }
  .stm-banners__nav--prev{
    transform: translate(0, -50%);
    left: .25rem;
  }
  .stm-banners__nav--next{
    transform: translate(0, -50%);
    right: .25rem;
  }
  .stm-banners__frame{
    height: min(var(--stm-banner-h), 72vh);
  }
}