/* ============================================================
   COVER ENGINE — Interactive case covers
   Shared styles for all 6 case cover variants.

   Structure:
   .p-cover-wrap          — perspective container
     .p-cover             — main card (tilt, bg layers, overflow)
       .p-cover__bg       — gradient background
       .p-cover__dots     — dot grid pattern
       .p-cover__glow     — cursor-following green glow
       .p-cover__grid     — CSS Grid for Mac frames
         .p-cover__frame  — Mac window (titlebar + content)
       .p-cover__vignette — edge darkening overlay

   HTML usage:
     <div class="p-case-screen__visual p-reveal p-reveal--scale">
       <div id="case-01-cover"></div>
     </div>

   JS: new CoverEngine(document.getElementById('case-01-cover'), { ... })
   ============================================================ */

/* --- Override visual container for covers --- */
.p-case-screen__visual:has(.p-cover-wrap) {
  overflow: visible;
  /* Remove short-viewport max-height — cover handles its own aspect-ratio */
  max-height: none;
}

/* --- Perspective wrapper --- */
.p-cover-wrap {
  perspective: 800px;
}

/* --- Main card --- */
.p-cover {
  --mx: 0.5;
  --my: 0.5;

  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  transform-style: preserve-3d;
  will-change: transform;
  /* translate — отдельное свойство для lift-эффекта, анимируется CSS.
     transform (rotateX/Y) — без CSS-transition, smoothing через JS lerp.
     Разделение нужно чтобы CSS-transition не воевал с lerp-обновлениями. */
  transition: translate 0.45s cubic-bezier(0.23, 1, 0.32, 1),
              box-shadow 0.6s cubic-bezier(0.23, 1, 0.32, 1);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.2),
              inset 0 0 0 1px rgba(255, 255, 255, 0.05);
}

.p-cover--hovered {
  /* Lift через CSS translate (плавно через transition выше).
     Tilt через transform (плавно через JS lerp, без CSS-transition). */
  translate: 0 -4px;
  transform: rotateX(calc((var(--my) - 0.5) * -1.5deg))
             rotateY(calc((var(--mx) - 0.5) * 1.5deg));
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.2),
              inset 0 0 0 1px rgba(255, 255, 255, 0.1);
}

/* Кейс-02: без 3D-тилта (скрин пикселизируется), только параллакс-translate */
.p-cover--fac.p-cover--hovered {
  transform: translate(
    calc((var(--mx) - 0.5) * -6px),
    calc((var(--my) - 0.5) * -6px)
  );
}


/* ---- Background layers ---- */

.p-cover__bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(150deg, #0f1218 0%, #151c24 50%, #0f1218 100%);
}

.p-cover__dots {
  position: absolute;
  inset: 0;
  opacity: 0.025;
  background-image: radial-gradient(rgba(255, 255, 255, 0.6) 0.5px, transparent 0.5px);
  background-size: 24px 24px;
  pointer-events: none;
  transition: opacity 0.6s cubic-bezier(0.23, 1, 0.32, 1);
}

.p-cover--hovered .p-cover__dots {
  opacity: 0.045;
  background-image: radial-gradient(rgba(232, 115, 74, 0.6) 0.5px, transparent 0.5px);
}

.p-cover__glow {
  position: absolute;
  width: 450px;
  height: 450px;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(232, 115, 74, 0.45) 0%,
    rgba(232, 115, 74, 0.15) 25%,
    rgba(232, 115, 74, 0.06) 50%,
    transparent 70%
  );
  left: calc(var(--mx) * 100%);
  top: calc(var(--my) * 100%);
  transform: translate(-50%, -50%) translateZ(0);
  will-change: left, top;
  opacity: 0;
  transition: opacity 0.6s cubic-bezier(0.23, 1, 0.32, 1);
  pointer-events: none;
}

.p-cover--hovered .p-cover__glow {
  opacity: 1;
  transition: opacity 0.3s;
}


/* ---- Frame grid ---- */

.p-cover__grid {
  position: absolute;
  inset: 0;
  z-index: 3;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  padding: 20px 24px;
  perspective: 600px;
}


/* ---- Mac window frame ---- */

.p-cover__frame {
  display: flex;
  flex-direction: column;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: #131316;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.45),
              0 1px 4px rgba(0, 0, 0, 0.25);
  /* translate убран из transition — JS lerp его анимирует.
     transform (rotateY) и opacity — CSS transition при смене класса. */
  transition: transform 0.45s cubic-bezier(0.23, 1, 0.32, 1),
              opacity 0.6s cubic-bezier(0.23, 1, 0.32, 1);
}

/* Left frame: prompt — shallow parallax, rotateY toward center */
.p-cover__frame--left {
  opacity: 0.75;
  transform-origin: right center;
  transition-delay: 0.02s;
}

.p-cover--hovered .p-cover__frame--left {
  translate: calc((var(--mx) - 0.5) * -8px) calc((var(--my) - 0.5) * -8px);
  transform: rotateY(4deg);
  opacity: 1;
}

/* Right frame: architecture — deeper parallax, rotateY toward center */
.p-cover__frame--right {
  transform-origin: left center;
}

.p-cover--hovered .p-cover__frame--right {
  translate: calc((var(--mx) - 0.5) * -20px) calc((var(--my) - 0.5) * -20px);
  transform: rotateY(-4deg);
}

/* No tilt on touch devices — keep glow, dots, opacity etc. */
@media (hover: none) {
  .p-cover--hovered .p-cover__frame--left,
  .p-cover--hovered .p-cover__frame--right {
    translate: none;
    transform: none;
  }
}


/* ---- Titlebar ---- */

.p-cover__titlebar {
  height: 30px;
  flex-shrink: 0;
  background: linear-gradient(180deg, #222226 0%, #1c1c1f 100%);
  display: flex;
  align-items: center;
  padding: 0 9px;
  gap: 6px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}

.p-cover__traffic {
  display: flex;
  gap: 4.5px;
}

.p-cover__dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  opacity: 0.8;
}

.p-cover__dot--close    { background: #ff5f57; }
.p-cover__dot--minimize { background: #febc2e; }
.p-cover__dot--maximize { background: #28c840; }

.p-cover__filename {
  flex: 1;
  text-align: center;
  font-size: 9px;
  font-family: var(--font-sans);
  color: rgba(255, 255, 255, 0.35);
}

.p-cover__titlebar-spacer {
  width: 36px;
}


/* ---- Content area ---- */

.p-cover__content {
  flex: 1;
  min-height: 0;
  overflow: hidden;
}


/* ---- Prompt content ---- */

.p-cover__prompt {
  padding: 10px 12px;
  background: #0e0e11;
  height: 100%;
}

.p-cover__line {
  font-size: 9px;
  font-family: var(--font-mono);
  color: rgba(255, 255, 255, 0.45);
  line-height: 1.7;
  white-space: pre;
}

.p-cover__line--key {
  color: rgba(200, 150, 90, 0.8);
}

/* Blinking cursor — pure CSS animation, visible only on hover */
.p-cover__cursor {
  display: none;
  width: 5px;
  height: 12px;
  background: rgba(200, 150, 90, 0.7);
  margin-left: 1px;
  vertical-align: middle;
}

.p-cover--hovered .p-cover__cursor {
  display: inline-block;
  animation: p-cover-blink 1.06s step-end infinite;
}

@keyframes p-cover-blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}


/* ---- Architecture content ---- */

.p-cover__arch {
  padding: 10px 12px 12px;
  background: #0e0e11;
  display: flex;
  flex-direction: column;
  height: 100%;
}

/* Node (Клиент, Маршрутизатор, Критик, Ответ) */
.p-cover__node {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 7px;
  padding: 5px 10px;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.4s ease;
}

.p-cover__node--accent {
  background: rgba(180, 80, 60, 0.12);
  border-color: rgba(180, 80, 60, 0.22);
}

.p-cover--hovered .p-cover__node--accent {
  background: rgba(180, 80, 60, 0.18);
  border-color: rgba(180, 80, 60, 0.35);
}

.p-cover__node-icon {
  font-size: 13px;
  flex-shrink: 0;
  line-height: 1;
}

.p-cover__node-name {
  font-size: 10px;
  font-family: var(--font-sans);
  font-weight: var(--weight-semibold);
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.2;
}

.p-cover__node-sub {
  font-size: 7.5px;
  font-family: var(--font-sans);
  color: rgba(255, 255, 255, 0.4);
  margin-top: 1px;
}

/* Connector arrows between nodes */
.p-cover__connector {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.p-cover__connector-line {
  width: 1px;
  height: 4px;
  background: rgba(255, 255, 255, 0.1);
  transition: background 0.4s;
}

.p-cover--hovered .p-cover__connector--lit .p-cover__connector-line {
  background: rgba(180, 80, 60, 0.4);
}

.p-cover__connector-text {
  font-size: 7px;
  font-family: var(--font-sans);
  color: rgba(255, 255, 255, 0.2);
  padding: 0.5px 0;
  transition: color 0.4s;
}

.p-cover--hovered .p-cover__connector--lit .p-cover__connector-text {
  color: rgba(180, 80, 60, 0.5);
}

/* Function grid (3×2: RAG, IVR, API, SMS, Опер., Возврат) */
.p-cover__func-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 3px;
}

.p-cover__func {
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 5px;
  padding: 4px 3px 3px;
  text-align: center;
  transition: all 0.4s ease;
}

.p-cover__func--active {
  background: rgba(180, 80, 60, 0.12);
  border-color: rgba(180, 80, 60, 0.3);
  box-shadow: 0 0 8px rgba(180, 80, 60, 0.15);
}

.p-cover__func--dimmed {
  opacity: 0.4;
}

.p-cover__func-icon {
  font-size: 11px;
  margin-bottom: 1px;
  line-height: 1;
}

.p-cover__func-name {
  font-size: 7px;
  font-family: var(--font-sans);
  color: rgba(255, 255, 255, 0.5);
  font-weight: var(--weight-medium);
  transition: color 0.4s;
}

.p-cover__func--active .p-cover__func-name {
  color: rgba(255, 255, 255, 0.8);
}


/* ---- Vignette ---- */

.p-cover__vignette {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 6;
  background: radial-gradient(ellipse at 50% 50%, transparent 50%, rgba(12, 15, 20, 0.35) 100%);
}


/* ============================================================
   RESPONSIVE
   ============================================================ */

/* --- Tablet (≤960px): static, no hover effects --- */
@media (max-width: 960px) {
  .p-cover {
    border-radius: 14px;
    cursor: default;
  }

  .p-cover__grid {
    gap: 10px;
    padding: 16px 18px;
  }

  .p-cover__frame--left {
    opacity: 0.8;
  }

  /* frame-and-cards: disable hover transforms, fan shown via p-cover--tablet-open */
  .p-cover__main-frame {
    transform: none;
    transition: none;
  }
}

/* --- Tablet-sm (≤800px): single frame only --- */
@media (max-width: 800px) {
  .p-cover {
    aspect-ratio: 16 / 10;
    border-radius: var(--radius-md);
  }

  .p-cover__grid {
    grid-template-columns: 1fr;
    padding: 12px 14px;
  }

  .p-cover__frame--left {
    display: none;
  }

  /* frame-and-cards: flat fixes Chrome preserve-3d + overflow:hidden bug */
  .p-cover--fac {
    transform-style: flat;
  }

  .p-cover__cards {
    display: none;
  }

  .p-cover__main-frame {
    position: absolute;
    inset: 0;
    width: auto;
    height: auto;
    padding: 12px 14px;
    transform: none;
  }

  .p-cover--fac .p-cover__frame--main {
    height: 100%;
  }

  .p-cover--fac .p-cover__screenshot {
    object-fit: contain;
    object-position: center top;
  }
}

/* --- Mobile (≤640px): 1:1 — хватает высоты чтобы показать все ноды архитектуры --- */
@media (max-width: 640px) {
  .p-cover {
    aspect-ratio: 1 / 1;
    border-radius: 0; /* full-bleed: визуал идёт от края до края */
  }

  /* frame-and-cards: single frame → 4/3 fits better than 1/1 */
  .p-cover--fac {
    aspect-ratio: 4 / 3;
  }

  .p-cover__main-frame {
    padding: 10px 12px;
  }
}

/* --- Короткий мобайл (≤640px × ≤700px): возвращаем 4:3 — иначе обложка не влезает на экран --- */
@media (max-width: 640px) and (max-height: 700px) {
  .p-cover {
    aspect-ratio: 4 / 3;
  }
}

/* --- Compact mobile (<360px): scaled down, no subtitles --- */
@media (max-width: 359px) {
  .p-cover__grid {
    padding: 8px 10px;
  }

  .p-cover__main-frame {
    padding: 8px 10px;
  }

  .p-cover__frame {
    border-radius: 8px;
  }

  .p-cover__node {
    padding: 3px 6px;
    gap: 3px;
    border-radius: 5px;
  }

  .p-cover__node-icon  { font-size: 11px; }
  .p-cover__node-name  { font-size: 8px; }
  .p-cover__node-sub   { display: none; }

  .p-cover__func {
    padding: 2px 1.5px 1.5px;
    border-radius: 4px;
  }

  .p-cover__func-grid  { gap: 1.5px; }
  .p-cover__func-icon  { font-size: 9px; }
  .p-cover__func-name  { font-size: 6px; }

  .p-cover__connector-text { display: none; }
  .p-cover__connector-line { height: 2px; }
}


/* --- Large desktop (≥1920px): scale up internals ~1.4× --- */
@media (min-width: 1920px) {
  .p-cover__grid {
    gap: 16px;
    padding: 28px 32px;
  }

  .p-cover__frame {
    border-radius: 14px;
  }

  /* Titlebar */
  .p-cover__titlebar {
    height: 40px;
    padding: 0 14px;
    gap: 8px;
  }

  .p-cover__traffic { gap: 6px; }

  .p-cover__dot {
    width: 12px;
    height: 12px;
  }

  .p-cover__filename { font-size: 12px; }
  .p-cover__titlebar-spacer { width: 48px; }

  /* Prompt */
  .p-cover__prompt { padding: 14px 16px; }
  .p-cover__line   { font-size: 12px; }

  .p-cover__cursor {
    width: 6px;
    height: 16px;
  }

  /* Architecture */
  .p-cover__arch { padding: 14px 16px 16px; }

  .p-cover__node {
    padding: 7px 14px;
    gap: 8px;
    border-radius: 10px;
  }

  .p-cover__node-icon { font-size: 17px; }
  .p-cover__node-name { font-size: 13px; }
  .p-cover__node-sub  { font-size: 10px; margin-top: 2px; }

  .p-cover__connector-line { height: 5px; }
  .p-cover__connector-text { font-size: 9px; padding: 1px 0; }

  .p-cover__func-grid { gap: 4px; }

  .p-cover__func {
    border-radius: 7px;
    padding: 5px 4px 4px;
  }

  .p-cover__func-icon { font-size: 14px; margin-bottom: 2px; }
  .p-cover__func-name { font-size: 9px; }

  /* frame-and-cards */
  .p-cover__card-img {
    border-radius: 14px;
  }

  /* На 2K: transform-style:flat фиксит Chrome-баг (preserve-3d + overflow:hidden
     не клипит 3D-детей). В flat-режиме overflow:hidden работает корректно.
     perspective() встроен в transform обложки — compositing layer теряет
     перспективу от родителя.

     .p-cover__grid perspective увеличена 600→1400px: на 2K фреймы ~700px
     шириной, rotateY(4deg) с 600px проецирует край на ~68px за layout-границу
     (padding 32px → вылезает 36px). С 1400px — ~28px, остаётся в пределах. */
  .p-cover {
    transform-style: flat;
  }

  .p-cover__grid {
    perspective: 1400px;
  }

  .p-cover--hovered {
    transform: perspective(800px)
               rotateX(calc((var(--my) - 0.5) * -1.5deg))
               rotateY(calc((var(--mx) - 0.5) * 1.5deg));
  }

  /* carousel-stack: на 2К расширяем стек до 92% + центрируем с оптическим смещением вверх */
  .p-cover__cs-wrapper {
    top: 0;
    left: 4%;
    right: 4%;
    padding-bottom: calc(92% * 1066 / 2000 + 30px);
    margin-top: calc(2.5% - 15px);
  }

  .p-cover--cs-wide .p-cover__cs-wrapper {
    padding-bottom: calc(92% * 750 / 1216 + 40px); /* titlebar 40px на 2K */
  }

  /* peek-хинты перенесены ниже базовых правил — см. отдельный блок после строки 852 */
}


/* --- Reduced motion: disable all animations & transforms --- */
@media (prefers-reduced-motion: reduce) {
  .p-cover,
  .p-cover__frame,
  .p-cover__main-frame,
  .p-cover__card,
  .p-cover__dots,
  .p-cover__glow,
  .p-cover__node,
  .p-cover__func,
  .p-cover__connector-line,
  .p-cover__connector-text {
    transition: none !important;
  }

  .p-cover--hovered {
    translate: none;
    transform: none;
  }

  .p-cover--hovered .p-cover__frame--left,
  .p-cover--hovered .p-cover__frame--right {
    translate: none;
    transform: none;
  }

  .p-cover--hovered .p-cover__main-frame,
  .p-cover--hovered .p-cover__card {
    translate: none;
    transform: none;
  }

  .p-cover--hovered .p-cover__cursor {
    animation: none;
    display: inline-block;
    opacity: 1;
  }
}


/* ============================================================
   LAYOUT: FRAME-AND-CARDS (кейс 02)
   Main Mac frame (62% left) + card fan (33% right)
   ============================================================ */

/* --- Grain texture overlay --- */
.p-cover__grain {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.7;
  mix-blend-mode: soft-light;
}

/* Mac window fills its wrapper height */
.p-cover__main-frame > .p-cover__frame {
  height: 100%;
}

/* --- Main Mac frame --- */
.p-cover__main-frame {
  position: absolute;
  top: 4%;
  left: 3%;
  width: 90%;
  height: 90%;
  z-index: 3;
  /* translate: shift-left on hover, animated by CSS transition.
     transform: parallax from lerp (no CSS transition to avoid conflict). */
  transition: translate 0.45s cubic-bezier(0.23, 1, 0.32, 1);
  transform-origin: right center;
}

.p-cover--hovered .p-cover__main-frame {
  translate: -10px 0;
  transform: translate(
    calc((var(--mx) - 0.5) * 4px),
    calc((var(--my) - 0.5) * 4px)
  );
}

/* Terracotta border on the Mac window inside main frame */
.p-cover--hovered .p-cover__frame--main {
  border-color: rgba(180, 80, 60, 0.2);
}

/* --- Card fan container --- */
.p-cover__cards {
  position: absolute;
  top: 8%;
  right: 4%;
  width: 34%;
  height: 80%;
  z-index: 4;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* --- Individual card --- */
/* transform: fan spread + rotation — CSS transition on hover class change.
   translate: cursor parallax — no CSS transition, lerp drives it silently. */
.p-cover__card {
  position: absolute;
  width: 92%;
  transition: transform 0.6s cubic-bezier(0.23, 1, 0.32, 1);
  transform: translateY(calc(var(--card-ry, 0) * 1px))
             rotate(calc(var(--card-rrot, 0) * 1deg));
}

.p-cover--hovered .p-cover__card {
  transform: translateY(calc(var(--card-hy, 0) * 1px))
             rotate(calc(var(--card-hrot, 0) * 1deg));
  /* Parallax via separate translate — no CSS transition, lerp is smooth */
  translate: calc((var(--mx) - 0.5) * var(--card-depth, 0) * 1px)
             calc((var(--my) - 0.5) * var(--card-depth, 0) * 1px);
  opacity: 1;
}

/* Tablet: анимация при скролле к секции — повторяет ховер-состояние */
.p-cover--tablet-open .p-cover__card {
  transform: translateY(calc(var(--card-hy, 0) * 1px))
             rotate(calc(var(--card-hrot, 0) * 1deg));
  opacity: 1;
}

.p-cover--tablet-open .p-cover__main-frame {
  translate: -10px 0;
}

.p-cover--tablet-open .p-cover__frame-glow {
  opacity: 1;
}

.p-cover--tablet-open .p-cover__frame--main {
  border-color: rgba(180, 80, 60, 0.2);
}

.p-cover__card-img {
  width: 100%;
  display: block;
  border-radius: 0;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.22),
              0 2px 8px rgba(0, 0, 0, 0.14);
}

/* --- Screenshot inside Mac frame --- */
.p-cover__screenshot {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: center top;
  /* Отдельный GPU-слой — предотвращает размытие при 3D-трансформе родителя */
  transform: translateZ(0);
  backface-visibility: hidden;
}


/* ============================================================
   SHARED EFFECTS (все обложки: кейсы 01, 02, 03)
   ============================================================ */

/* --- Frame glow — терракотовое свечение за фреймом --- */
.p-cover__frame-glow {
  position: absolute;
  top: 3%;
  left: 3%;
  right: 3%;
  bottom: 5%;
  z-index: 1;
  border-radius: 16px;
  background: radial-gradient(
    ellipse at 50% 50%,
    rgba(232, 115, 74, 0.12) 0%,
    transparent 70%
  );
  opacity: 0;
  transition: opacity 0.6s cubic-bezier(0.23, 1, 0.32, 1);
  pointer-events: none;
}

.p-cover--hovered .p-cover__frame-glow {
  opacity: 1;
}

/* --- Peek hints — имитация стопки карточек под фреймом ---
   Позиционированы внутри .p-cover__cs-wrapper (overflow: visible).
   top: 100% = нижняя граница wrapper = низ фрейма. */
.p-cover__peek-1,
.p-cover__peek-2 {
  position: absolute;
  pointer-events: none;
}

.p-cover__peek-1 {
  top: 100%;   /* прямо под фреймом */
  left: 2%;    /* чуть уже wrapper — эффект глубины стопки */
  right: 2%;
  height: 7px;
  border-radius: 0 0 7px 7px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-top: none;
  opacity: 0;
  transition: opacity 0.5s cubic-bezier(0.23, 1, 0.32, 1);
}

.p-cover__peek-2 {
  top: calc(100% + 7px);   /* под peek-1 */
  left: 4%;
  right: 4%;
  height: 5px;
  border-radius: 0 0 5px 5px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-top: none;
  opacity: 0;
  transition: opacity 0.5s cubic-bezier(0.23, 1, 0.32, 1) 0.05s;
}

.p-cover--hovered .p-cover__peek-1,
.p-cover--autocycle .p-cover__peek-1 { opacity: 1; }

.p-cover--hovered .p-cover__peek-2,
.p-cover--autocycle .p-cover__peek-2 { opacity: 0.85; }

/* peek-хинты на 2К: ДОЛЖНЫ идти ПОСЛЕ базовых правил, иначе каскад перекрывает */
@media (min-width: 1920px) {
  .p-cover__peek-1 {
    height: 18px;
    border-radius: 0 0 12px 12px;
    background: rgba(255, 255, 255, 0.10);
    border-color: rgba(255, 255, 255, 0.20);
  }

  .p-cover__peek-2 {
    height: 13px;
    top: calc(100% + 18px);
    border-radius: 0 0 10px 10px;
    background: rgba(255, 255, 255, 0.07);
    border-color: rgba(255, 255, 255, 0.14);
  }
}

/* Carousel-stack: dots — фиксированный низ обложки */
.p-cover--cs .p-cover__pdots { bottom: 2%; }


/* ============================================================
   LAYOUT: CAROUSEL-STACK (кейс 03)
   Single Mac frame, screens cycle via slide-push animation.
   ============================================================ */

/* Override: no 3D tilt (screenshots pixelate under rotateX/Y),
   only lift — parallax goes on cs-stack directly */
.p-cover--cs.p-cover--hovered {
  translate: 0 -4px;
  transform: none;
}

/* Stack wrapper — внешний контейнер: позиционирование + точная высота.
   overflow: visible (дефолт) → peek-хинты (top: 100%) видны ниже фрейма. */
.p-cover__cs-wrapper {
  position: absolute;
  top: 20px;
  left: 7.5%;
  right: 7.5%;
  height: 0;
  padding-bottom: calc(85% * 1066 / 2000 + 30px); /* screenshot_h + titlebar */
  z-index: 3;
}

/* Stack container — внутренний: только клиппинг слайд-анимации */
.p-cover__cs-stack {
  position: absolute;
  inset: 0;
  overflow: hidden;
  border-radius: 10px;
}

/* Subtle parallax on the whole stack — driven by lerp --mx/--my */
.p-cover--hovered .p-cover__cs-wrapper {
  transform: translate(
    calc((var(--mx) - 0.5) * 4px),
    calc((var(--my) - 0.5) * 4px)
  );
}

/* Individual frame slot */
.p-cover__cs-slot {
  position: absolute;
  inset: 0;
  opacity: 0;
  pointer-events: none;
  will-change: transform, opacity;
}

.p-cover__cs-slot--active {
  opacity: 1;
  pointer-events: auto;
}

.p-cover__cs-slot--exiting {
  z-index: 3;
  animation: p-cover-sp-out 0.6s ease-in-out forwards;
}

.p-cover__cs-slot--entering {
  opacity: 1;
  z-index: 2;
  animation: p-cover-sp-in 0.6s ease-in-out forwards;
}

/* Mac frame fills slot */
.p-cover__cs-slot .p-cover__frame {
  height: 100%;
}

/* Screenshot: fill frame exactly — контейнер подогнан под AR скрина (1066/2000),
   object-fit:fill растягивает по размеру без обрезки */
.p-cover__cs-slot .p-cover__screenshot {
  object-fit: fill;
}

/* Wide screenshots (landscape, ~1216×750): wrapper подгоняем под ландшафтный AR.
   Формула: horizontal_span% × (img_h / img_w) + titlebar.
   contain — обе картинки (738 и 750) влезают без обрезки и без искажения;
   бо́льшая заполняет точно, меньшая — с невидимым ~1% зазором снизу. */
.p-cover--cs-wide .p-cover__cs-wrapper {
  padding-bottom: calc(85% * 750 / 1216 + 30px);
}

.p-cover--cs-wide .p-cover__cs-slot .p-cover__screenshot {
  object-fit: fill;
}

/* Маска скруглений: картинки имеют baked-in border-radius сверху —
   полоска цвета фрейма прячет их под тайтлбаром.
   Живёт внутри .p-cover__content → анимируется вместе со слотом. */
.p-cover--cs-wide .p-cover__content {
  position: relative;
}

.p-cover--cs-wide .p-cover__content::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 10px;
  background: #FFFFFF;
  z-index: 1;
  pointer-events: none;
}

/* Slide-push keyframes */
@keyframes p-cover-sp-in {
  0%   { transform: translateY(10%); opacity: 0; }
  100% { transform: translateY(0%);  opacity: 1; }
}

@keyframes p-cover-sp-out {
  0%   { transform: translateY(0%);  opacity: 1; }
  100% { transform: translateY(-8%); opacity: 0; }
}

/* --- Pagination dots --- */
.p-cover__pdots {
  position: absolute;
  bottom: 5%;
  left: 50%;
  transform: translateX(-50%);
  z-index: 5;
  display: flex;
  align-items: center;
  gap: 5px;
  opacity: 0;
  transition: opacity 0.4s cubic-bezier(0.23, 1, 0.32, 1);
  pointer-events: none;
}

.p-cover--hovered .p-cover__pdots,
.p-cover--autocycle .p-cover__pdots {
  opacity: 1;
}

.p-cover__pdot {
  width: 4px;
  height: 4px;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.25);
  transition: width 0.3s cubic-bezier(0.23, 1, 0.32, 1),
              background 0.3s cubic-bezier(0.23, 1, 0.32, 1);
}

.p-cover__pdot--active {
  width: 14px;
  background: rgba(232, 115, 74, 0.95);
}


/* ============================================================
   CAROUSEL-STACK RESPONSIVE
   ============================================================ */

/* Tablet-sm: tighter inset (≤800px) — тот же трюк, другой отступ */
@media (max-width: 800px) {
  .p-cover__cs-wrapper {
    top: 12px;
    left: 14px;
    right: 14px;
    padding-bottom: calc((100% - 28px) * 1066 / 2000 + 30px);
  }

  .p-cover--cs-wide .p-cover__cs-wrapper {
    padding-bottom: calc((100% - 28px) * 750 / 1216 + 30px);
  }
}

/* Mobile: 4:3 aspect ratio */
@media (max-width: 640px) {
  .p-cover--cs {
    aspect-ratio: 4 / 3;
  }
}

/* Short mobile: override to 4:3 if not already */
@media (max-width: 640px) and (max-height: 700px) {
  .p-cover--cs {
    aspect-ratio: 4 / 3;
  }
}

/* --- Wide carousel (landscape screenshots, e.g. Case 06) ---
   Landscape AR (750/1216 ≈ 0.617) слишком близок к базовому 16:9 (0.5625)
   и 16:10 (0.625) → wrapper overflow. Решение: тянем cover вверх до 3:2.
   Только .p-cover--cs-wide — остальные обложки не затрагиваются.
   transform-style: flat — фиксит Chrome-баг preserve-3d + overflow:hidden. */
.p-cover--cs-wide {
  transform-style: flat;
}

@media (min-width: 641px) {
  .p-cover--cs-wide {
    aspect-ratio: 3 / 2;
  }
}

/* 2K: cover достаточно большой — 16/10 даёт нужный запас */
@media (min-width: 1920px) {
  .p-cover--cs-wide {
    aspect-ratio: 16 / 10;
  }
}


/* ============================================================
   REDUCED MOTION — carousel-stack additions
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  .p-cover__cs-slot,
  .p-cover__frame-glow,
  .p-cover__peek-1,
  .p-cover__peek-2,
  .p-cover__pdots,
  .p-cover__pdot {
    transition: none !important;
    animation: none !important;
  }

  .p-cover__cs-slot--exiting {
    opacity: 0;
  }

  .p-cover__cs-slot--entering {
    opacity: 1;
  }
}


/* ============================================================
   MOBILE CARD STACK — рендерится CoverEngine из config.mobile.cards
   Позиционируется поверх фонового слоя (.p-cover), под вигнеткой (z-index:6).
   ============================================================ */

/* Скрываем десктопный контент только на мобайле (< 640px) */
@media (max-width: 639px) {
  .p-cover--fac .p-cover__main-frame,
  .p-cover--fac .p-cover__cards,
  .p-cover--cs .p-cover__cs-wrapper,
  .p-cover--cs .p-cover__peek-1,
  .p-cover--cs .p-cover__peek-2,
  .p-cover--cs .p-cover__pdots {
    display: none;
  }
}

/* Мобильный стек — только телефоны (< 640px), на планшетах скрыт */
.p-cover__mobile-stack {
  position: absolute;
  inset: 0;
  z-index: 5;
  display: none; /* скрыт по умолчанию */
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: var(--space-6) var(--space-5);
  gap: var(--space-2);
}

@media (max-width: 639px) {
  .p-cover__mobile-stack {
    display: flex;
  }
}

.p-cover__mobile-card {
  width: 93%;
  height: auto;
  display: block;
  border-radius: var(--radius-sm);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.4);
  opacity: 0;
}

/* Entrance stagger — fires when IntersectionObserver adds --visible */
@keyframes p-cover-card-in {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

.p-cover__mobile-stack--visible .p-cover__mobile-card {
  animation: p-cover-card-in 0.5s cubic-bezier(0.23, 1, 0.32, 1) forwards;
}

.p-cover__mobile-stack--visible .p-cover__mobile-card:nth-child(1) { animation-delay: 0ms; }
.p-cover__mobile-stack--visible .p-cover__mobile-card:nth-child(2) { animation-delay: 110ms; }
.p-cover__mobile-stack--visible .p-cover__mobile-card:nth-child(3) { animation-delay: 220ms; }
.p-cover__mobile-stack--visible .p-cover__mobile-card:nth-child(4) { animation-delay: 330ms; }

@media (prefers-reduced-motion: reduce) {
  .p-cover__mobile-card { opacity: 1; }
  .p-cover__mobile-stack--visible .p-cover__mobile-card { animation: none; }
}

/* Cover as link — контейнер обложки оборачивается в <a> */
.p-cover-link {
  display: block;
  text-decoration: none;
  color: inherit;
}