/* ============================================================
   carousel.css — landing 'In the Field' center-focus carousel
   (owned by landing agent). Tokens from /boomtrivia/theme/tokens.css.
   Item transforms (translate/scale/opacity) are driven by the
   vanilla JS in index.php; transitions + chrome live here.
   ============================================================ */

.bt-carousel { position: relative; }

/* stage — items are absolutely positioned around the center line */
.bt-car-viewport {
  position: relative;
  height: 478px; /* 780 x .55 phone + label */
  overflow: hidden;
}
.bt-car-item {
  position: absolute;
  left: 50%;
  top: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--s3);
  transform: translateX(-50%);
  transform-origin: center top;
  transition:
    transform var(--t-slow) var(--ease-std),
    opacity   var(--t-slow) var(--ease-std);
  will-change: transform, opacity;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.bt-car-item.is-active { cursor: default; }

/* caption — only the focused screen is labelled */
.bt-car-label {
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
  opacity: 0;
  transition: opacity var(--t-slow) var(--ease-std);
}
.bt-car-item.is-active .bt-car-label { opacity: 1; }

/* chevron controls */
.bt-car-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 20;
  width: 44px;
  height: 44px;
  border: none;
  border-radius: 50%;
  padding: 0;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface);
  color: var(--ink);
  box-shadow: inset 0 0 0 1px var(--line-strong), var(--sh-card);
  transition:
    background var(--t-fast) var(--ease-std),
    color      var(--t-fast) var(--ease-std),
    transform  var(--t-fast) var(--ease-std);
}
.bt-car-btn:hover  { background: var(--accent-danger); color: #fff; }
.bt-car-btn:active { transform: translateY(-50%) scale(.94); }
.bt-car-prev { left: 2px; }
.bt-car-next { right: 2px; }

/* dots */
.bt-car-dots {
  display: flex;
  justify-content: center;
  gap: var(--s2);
  margin-top: var(--s4);
}
.bt-car-dot {
  width: 9px;
  height: 9px;
  border: none;
  border-radius: 50%;
  padding: 0;
  cursor: pointer;
  background: var(--surface-2);
  box-shadow: inset 0 0 0 1px var(--line-strong);
  transition:
    background var(--t-base) var(--ease-std),
    transform  var(--t-base) var(--ease-back);
}
.bt-car-dot:hover { background: var(--line-strong); }
.bt-car-dot.is-on {
  background: var(--accent-danger);
  box-shadow: 0 0 0 3px var(--accent-danger-glow);
  transform: scale(1.25);
}

/* narrow screens — single centered screen, controls tucked in */
@media (max-width: 680px) {
  .bt-car-btn { width: 38px; height: 38px; }
  .bt-car-prev { left: 0; }
  .bt-car-next { right: 0; }
}

/* respect the game's reduce-motion stance */
@media (prefers-reduced-motion: reduce) {
  .bt-car-item, .bt-car-label, .bt-car-dot { transition: none; }
}