/* ==========================================================================
   About — "Co je to TOWER"
   ========================================================================== */

.about { padding: 72px 0; }
.about__inner {
  display: grid; grid-template-columns: minmax(0, 500px) 1fr; gap: 64px;
  align-items: center;
}
.about__media { min-width: 0; }

.tower-slider__viewport {
  position: relative;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  border-radius: var(--radius);
}
.tower-slider__slide {
  position: absolute; inset: 0;
  opacity: 0;
  transform: translateY(10px) scale(.99);
  transition: opacity .42s ease, transform .42s ease;
  pointer-events: none;
}
.tower-slider__slide.is-active { opacity: 1; transform: none; pointer-events: auto; }
.tower-slider__slide img { width: 100%; height: 100%; object-fit: cover; display: block; }

.tower-slider__controls { margin-top: 16px; display: flex; gap: 12px; }
.tower-slider__btn {
  width: 52px; height: 52px; flex: none;
  border: 1px solid var(--border); border-radius: 9999px;
  background: var(--surface); color: var(--heading);
  display: inline-flex; align-items: center; justify-content: center;
  cursor: pointer;
  transition: transform .15s ease, border-color .15s ease, background .15s ease, color .15s ease;
}
.tower-slider__btn:hover { border-color: var(--red); color: var(--red); }
.tower-slider__btn svg { width: 20px; height: 20px; display: block; }
.about__copy { display: flex; flex-direction: column; gap: 18px; }
.about__copy .h2--big { font-weight: 600; }
.about__cta { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 8px; }

.set-list { display: flex; flex-direction: column; gap: 4px; margin-top: 8px; }
.set-list__item {
  padding: 9px 16px;
  border-left: 3px solid transparent;
  border-radius: 0 10px 10px 0;
  cursor: pointer;
  transition: background .2s ease, border-color .2s ease;
}
.set-list__item:hover { background: var(--border-hair); }
.set-list__item.is-active { background: var(--border-hair); border-left-color: var(--red); }
.set-list__item strong { display: block; font-size: 16px; font-weight: 700; color: var(--heading); }
.set-list__item.is-active strong { color: var(--red); }
.set-list__item span { font-size: 14px; line-height: 20px; color: var(--text-soft); }