/* ============================================
   SAZGER — layout
   Сетка слайдов, позиционирование, адаптив
   ============================================ */

/* --- Общая сцена --- */
.deck {
  position: relative;
  width: 100vw;
  height: 100vh;
  height: 100dvh;
  overflow: hidden;
}

/* --- Слайд --- */
.slide {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: scale(0.96);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
  pointer-events: none;
  overflow: hidden;
  z-index: 1;
  visibility: hidden;
}

.slide.active {
  opacity: 1;
  transform: scale(1);
  pointer-events: all;
  z-index: 2;
  visibility: visible;
}

.slide > .content {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 1180px;
  padding: clamp(1.5rem, 3vw, 3rem);
  padding-top: clamp(4rem, 7vh, 6rem);
  padding-bottom: clamp(2rem, 5vh, 4rem);
  margin: 0 auto;
}

/* --- Фоновый слой --- */
.bg-layer {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

/* --- Название слайда (левый верхний угол, десктоп) --- */
.slide-title {
  position: fixed;
  top: clamp(1rem, 2.5vh, 2rem);
  left: clamp(1rem, 2.5vw, 2rem);
  z-index: 50;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  pointer-events: none;
}

.slide-title__text {
  font-family: var(--font-display);
  font-size: clamp(0.85rem, 1.2vw, 1.1rem);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text);
  opacity: 0;
  transform: translateX(-10px);
  transition: opacity var(--transition-base), transform var(--transition-base);
}

.slide-title__text.visible {
  opacity: 1;
  transform: translateX(0);
}

.slide-title__line {
  height: 2px;
  width: 0;
  background: linear-gradient(90deg,
    var(--color-accent-1) 0%,
    var(--color-accent-2) 50%,
    var(--color-accent-3) 100%);
  border-radius: var(--radius-pill);
  transition: width var(--transition-base);
}

.slide-title__line.visible {
  width: 60px;
}

/* --- Индикатор прогресса (сверху по центру) --- */
.progress-indicator {
  position: fixed;
  top: clamp(1rem, 2.5vh, 2rem);
  left: 50%;
  transform: translateX(-50%);
  z-index: 50;
  font-family: var(--font-body);
  font-size: clamp(0.8rem, 1vw, 0.95rem);
  font-weight: 400;
  letter-spacing: 0.15em;
  color: #f3f4f6;
  pointer-events: none;
  user-select: none;
}

.progress-indicator__current {
  color: #00AFCA;
  font-weight: 500;
}

/* --- Переключатель языка (правый верхний угол) --- */
.lang-switcher {
  position: fixed;
  top: clamp(1rem, 2.5vh, 2rem);
  right: calc(clamp(1rem, 2.5vw, 2rem) + 175px);
  z-index: 60;
  display: flex;
  gap: 0.6rem;
}

.lang-switcher button {
  padding: 0.25rem 0.4rem;
  border-radius: 0;
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.05em;
  color: #f3f4f6;
  background: transparent;
  border: none;
  transition: color var(--transition-fast);
}

.lang-switcher button:hover {
  color: #00AFCA;
}

.lang-switcher button.active {
  background: transparent;
  color: #00AFCA;
  font-weight: 400;
}

/* --- Гамбург-меню --- */
.menu-toggle {
  width: 44px;
  height: 44px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  background: rgba(10, 12, 18, 0.7);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-glass-border);
  transition: background var(--transition-fast);
}

.menu-toggle:hover {
  background: rgba(20, 24, 32, 0.85);
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--color-text);
  border-radius: var(--radius-pill);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

/* --- Триггер меню (надпись + гамбургер) --- */
.menu-trigger {
  position: fixed;
  top: clamp(1rem, 2.5vh, 2rem);
  right: clamp(1rem, 2.5vw, 2rem);
  z-index: 70;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.menu-trigger__label {
  font-family: var(--font-body);
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  white-space: nowrap;
}

/* ============================================
   АДАПТИВ
   ============================================ */

@media (max-width: 1024px) {
  .slide > .content {
    max-width: 920px;
    padding-left: clamp(1.25rem, 3vw, 2rem);
    padding-right: clamp(1.25rem, 3vw, 2rem);
  }
}

@media (max-width: 820px) {
  .slide > .content {
    max-width: 100%;
  }
}

@media (max-width: 640px) {

  .slide {
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    justify-content: flex-start;
    align-items: stretch;
  }

  .slide > .content {
    padding: 5rem 1rem 3rem;
    max-width: 100%;
  }

  /* Название слайда — скрыть */
  .slide-title {
    display: none;
  }

  /* Первый слайд — контент по центру */
  .slide:first-child {
    justify-content: center;
    align-items: center;
  }

  .slide:first-child .content {
    text-align: center;
    padding-top: 5rem;
    padding-bottom: 8rem;
  }

  /* Верхняя панель — в одну строку */
  .progress-indicator {
    top: 1.1rem;
    left: 1rem;
    transform: none;
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    z-index: 75;
  }

  .lang-switcher {
    top: 1rem;
    left: 50%;
    right: auto;
    transform: translateX(-50%);
    padding: 0.3rem 0.5rem;
    z-index: 75;
  }

  .lang-switcher button {
    padding: 0.3rem 0.55rem;
    font-size: 0.7rem;
  }

  .menu-trigger {
    top: 1rem;
    right: 1rem;
    left: auto;
    z-index: 76;
  }

  /* Скрыть надпись ОГЛАВЛЕНИЕ на мобильном */
  .menu-trigger__label {
    display: none;
  }

  .menu-trigger .menu-toggle {
    width: 40px;
    height: 40px;
  }

  /* Увеличить текст контента */
  .section-label {
    font-size: 0.8rem;
  }

  .slide h2 {
    font-size: clamp(1.6rem, 7vw, 2.2rem);
  }

  .slide p {
    font-size: 1rem;
    line-height: 1.65;
  }

  .bullet-item,
  .mini-card,
  .product-card,
  .money-card,
  .audience-card,
  .why-card {
    padding: 1.1rem 1.15rem;
  }

  .timeline-item strong {
    font-size: 1.05rem;
  }

  .timeline-item .time-col {
    font-size: 0.9rem;
  }
}

@media (max-width: 420px) {
  .slide > .content {
    padding: 4.5rem 0.85rem 2.5rem;
  }

  .progress-indicator {
    font-size: 0.85rem;
  }
}

@media (min-width: 1920px) {
  .slide > .content {
    max-width: 1600px;
    padding: 6rem 5rem 4rem;
  }

  .slide-title__text {
    font-size: 1.2rem;
  }

  .progress-indicator {
    font-size: 1rem;
  }

  .lang-switcher button {
    padding: 0.5rem 1rem;
    font-size: 0.95rem;
  }
}

@media (aspect-ratio: 4/3) and (min-width: 1024px) {
  .slide {
    justify-content: flex-start;
  }

  .slide > .content {
    padding-top: 5rem;
    padding-bottom: 3rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .slide {
    transition: none;
  }
}


/* ============================================
   ПК: убрать надпись "ОГЛАВЛЕНИЕ"
   ============================================ */
@media (min-width: 641px) {
  .menu-trigger__label {
    display: none;
  }
}

/* ============================================
   УБРАТЬ НАЗВАНИЕ СЛАЙДА (левый верхний угол) НА ПК
   ============================================ */
@media (min-width: 641px) {
  .slide-title {
    display: none !important;
  }
}


/* ============================================
   МОБИЛЬНЫЕ: полностью скрыть неактивные слайды
   ============================================ */
@media (max-width: 640px) {
  .slide {
    visibility: hidden;
  }

  .slide.active {
    visibility: visible;
    overflow-y: auto;
    overflow-x: hidden;
  }
}


/* ============================================
   МОБИЛЬНЫЕ: сжатие отступов (без шрифтов)
   ============================================ */
@media (max-width: 640px) {
  .slide > .content {
    padding-top: 4rem;
    padding-bottom: 4rem;
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .section-label {
    margin-bottom: 0.3rem;
  }

  .slide h2 {
    margin-bottom: 0.3rem;
  }

  .accent-line {
    margin: 12px 0 14px !important;
  }
}