/* ==========================================================================
   Страница презентации
   ========================================================================== */

.deckpage { padding-top: 92px; }

.deckhead { padding-block: clamp(28px, 5vw, 56px) clamp(24px, 4vw, 40px); }
.deckhead__grid { display: grid; gap: clamp(18px, 3vw, 40px); }
@media (min-width: 900px) {
  .deckhead__grid { grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); align-items: end; }
}
.deckhead__acts { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }

.deckwrap {
  display: grid;
  gap: clamp(18px, 3vw, 44px);
  grid-template-columns: minmax(0, 1fr);
  padding-bottom: clamp(60px, 8vw, 110px);
}
@media (min-width: 1000px) {
  .deckwrap { grid-template-columns: 148px minmax(0, 1fr); align-items: start; }
}

/* индекс слайдов */
.deckindex { display: none; }
@media (min-width: 1000px) {
  .deckindex {
    display: block;
    position: sticky;
    top: 100px;
    max-height: calc(100vh - 140px);
    max-height: calc(100svh - 140px);
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--line-strong) transparent;
    padding-right: 6px;
  }
}
.deckindex ol { list-style: none; margin: 0; padding: 0; display: grid; gap: 1px; }
.deckindex a {
  display: grid;
  grid-template-columns: 2.1rem minmax(0, 1fr);
  gap: 8px;
  align-items: baseline;
  padding: 8px 0;
  font-size: .78rem;
  color: var(--muted-2);
  border-top: 1px solid var(--line);
  transition: color .3s var(--ease);
}
.deckindex a .n { font-family: var(--font-display); letter-spacing: .06em; }
.deckindex a:hover { color: var(--text); }
.deckindex a.is-active { color: var(--coral); }

/* слайды */
.slides { display: grid; gap: clamp(14px, 2.4vw, 28px); min-width: 0; }
.slide {
  position: relative;
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  background: var(--surface);
  scroll-margin-top: 100px;
}
.slide button.slide__hit {
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  background: none;
  cursor: zoom-in;
}
.slide img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.slide__no {
  position: absolute;
  top: 12px; left: 12px;
  z-index: 2;
  font-family: var(--font-display);
  font-size: .72rem;
  letter-spacing: .08em;
  color: #fff;
  background: rgba(8, 8, 8, .62);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255, 255, 255, .16);
  border-radius: 999px;
  padding: 5px 11px;
  pointer-events: none;
}

/* нижняя панель */
.deckbar {
  position: fixed;
  left: 50%;
  bottom: clamp(14px, 3vw, 26px);
  transform: translateX(-50%);
  z-index: 40;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px 8px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(10, 10, 10, .82);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  box-shadow: 0 18px 44px -20px rgba(0, 0, 0, .95);
  max-width: calc(100vw - 2 * var(--pad));
}
.deckbar__count { font-size: .82rem; color: var(--muted); white-space: nowrap; font-variant-numeric: tabular-nums; }
.deckbar .btn { white-space: nowrap; }
@media (max-width: 480px) { .deckbar { padding-left: 14px; gap: 8px; } .deckbar__count { font-size: .76rem; } }

/* лайтбокс */
.lb {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto auto;
  gap: 10px;
  padding: clamp(10px, 2vw, 22px);
  background: rgba(4, 4, 4, .96);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  opacity: 0;
  visibility: hidden;
  transition: opacity .3s var(--ease), visibility .3s;
}
.lb.is-open { opacity: 1; visibility: visible; }
.lb__top { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.lb__no { font-family: var(--font-display); font-size: .8rem; letter-spacing: .08em; color: var(--muted); }
.lb__stage { position: relative; display: grid; place-items: center; min-height: 0; }
.lb__stage img {
  max-width: 100%;
  max-height: calc(100vh - 190px);
  max-height: calc(100svh - 190px);
  width: auto;
  height: auto;
  border-radius: 8px;
  border: 1px solid var(--line);
}

/* на вертикальном телефоне слайд разворачивается по длинной стороне —
   иначе мелкий текст прайса не прочитать */
@media (orientation: portrait) and (max-width: 760px) {
  .lb__stage { overflow: hidden; }
  .lb__stage img {
    position: absolute;
    top: 50%; left: 50%;
    width: min(calc(100svh - 190px), calc((100vw - 26px) * 16 / 9));
    height: auto;
    max-width: none;
    max-height: none;
    transform: translate(-50%, -50%) rotate(90deg);
    transform-origin: center;
  }
  .lb__hint { display: block; }
}
.lb__hint { display: none; font-size: .72rem; color: var(--muted-2); text-align: center; }
.lb__nav { display: flex; justify-content: center; gap: 10px; }
.lb__btn {
  display: inline-grid;
  place-items: center;
  width: 46px; height: 46px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  cursor: pointer;
  transition: border-color .3s var(--ease), background .3s var(--ease);
}
.lb__btn:hover { border-color: var(--line-strong); background: rgba(255, 255, 255, .05); }
.lb__btn svg { width: 18px; height: 18px; }