/* =============================================
   MAINLER.RU — Shared Product Page Styles
   Full-screen sections, scroll-driven video
   ============================================= */

/* --- GPU-promoted layers for animated elements --- */
.philosophy__video-bg,
.philosophy__phase,
.package__track,
.features__card,
.lineup__card,
.advantages__card,
.contacts__item,
.comparison__left,
.comparison__right {
  will-change: auto;          /* promoted on animation start */
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

/* --- Product Hero --- */
.product-hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--black);
  color: var(--white);
}

.product-hero__video-wrap {
  position: absolute;
  inset: 0;
}

.product-hero__video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.45;
}

.product-hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(10,10,10,0.45) 0%,
    rgba(10,10,10,0.2) 40%,
    rgba(10,10,10,0.7) 100%
  );
  z-index: 1;
}

.product-hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 900px;
  padding: calc(var(--nav-height) + 20px) var(--container-padding) 60px;
  width: 100%;
}

.product-hero__brand {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(0.7rem, 1vw, 0.9rem);
  color: var(--primary-light);
  text-transform: uppercase;
  letter-spacing: 0.25em;
  margin-bottom: 20px;
}

.product-hero__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.5rem, 6vw, 5.5rem);
  line-height: 1.05;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.product-hero__subtitle {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: clamp(1rem, 1.4vw, 1.25rem);
  color: rgba(255,255,255,0.65);
  max-width: 620px;
  margin: 0 auto 48px;
}

.product-hero__stats {
  display: flex;
  gap: clamp(32px, 5vw, 72px);
  justify-content: center;
  flex-wrap: wrap;
}

.product-hero__stat-number {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1;
  color: var(--white);
}

.product-hero__stat-label {
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: rgba(255,255,255,0.55);
  margin-top: 6px;
  max-width: 160px;
  text-align: center;
}

/* --- Philosophy: Apple-style scroll-driven video --- */
.philosophy {
  position: relative;
  height: 280vh; /* tall for scroll range */
  background: var(--black);
  color: var(--white);
}

.philosophy__sticky {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Canvas frame sequence — full background */
.philosophy__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 0.6s;
  pointer-events: none;
  display: block;
}

.philosophy__canvas.ready {
  opacity: 0.9;
}

.philosophy__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(10,10,10,0.45) 0%,
    rgba(10,10,10,0.15) 50%,
    rgba(10,10,10,0.4) 100%
  );
  z-index: 1;
}

.philosophy__inner {
  position: relative;
  z-index: 2;
  width: 100%;
}

/* Phases of content that appear at different scroll positions */
.philosophy__phase {
  position: absolute;
  top: 50%;
  left: 0;
  width: 100%;
  transform: translateY(-50%);
  opacity: 0;
  transition: opacity 0.5s;
  padding: 0 var(--container-padding);
  max-width: var(--container-max);
  margin-inline: auto;
  z-index: 2;
}

/* Phase 0 always visible as fallback — JS hides it when switching */
.philosophy__phase--0 {
  opacity: 1;
}

.philosophy__phase.active {
  opacity: 1;
}

/* When canvas system is live, other phases stay hidden until active */
.philosophy--js-ready .philosophy__phase--0 {
  opacity: 0;
}
.philosophy--js-ready .philosophy__phase--0.active {
  opacity: 1;
}

/* Phase 0: intro label + headline */
.philosophy__headline {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 700;
  font-size: clamp(2.5rem, 6vw, 5.5rem);
  color: var(--white);
  line-height: 1.05;
  max-width: 800px;
  margin-bottom: 20px;
}

.philosophy__label-text {
  font-family: var(--font-accent);
  font-size: clamp(1rem, 1.5vw, 1.4rem);
  color: var(--gold);
  margin-bottom: 16px;
  display: block;
}

/* Phase 1: bullet list */
.philosophy__list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 600px;
}

.philosophy__list-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  font-family: var(--font-body);
  font-size: clamp(0.95rem, 1.1vw, 1.1rem);
  color: rgba(255,255,255,0.85);
  line-height: 1.6;
}

.philosophy__list-item::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
  flex-shrink: 0;
  margin-top: 8px;
}

/* Phase 2: highlight statement */
.philosophy__highlight {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(1.5rem, 3vw, 2.8rem);
  color: var(--primary-light);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  line-height: 1.2;
  max-width: 700px;
}

/* Scroll progress indicator */
.philosophy__progress {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  gap: 8px;
}

.philosophy__progress-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(255,255,255,0.3);
  transition: background 0.3s, transform 0.3s;
}

.philosophy__progress-dot.active {
  background: var(--white);
  transform: scale(1.4);
}

/* --- Features Grid --- */
.features {
  min-height: 100vh;
  padding-block: clamp(80px, 10vh, 120px);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.features__card {
  border-radius: 14px;
  padding: clamp(18px, 2.2vw, 26px);
  transition: transform 0.3s var(--ease-out), box-shadow 0.3s;
}

.features__card:hover {
  transform: translateY(-3px);
}

.features__card-icon {
  width: 38px;
  height: 38px;
  margin-bottom: 12px;
  color: var(--primary);
}

.features__card-icon svg {
  width: 100%;
  height: 100%;
}

.features__card-title {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: clamp(0.95rem, 1.05vw, 1.1rem);
  margin-bottom: 6px;
  color: var(--white);
  line-height: 1.3;
}

.features__card-text {
  font-family: var(--font-body);
  font-size: 0.9rem;
  line-height: 1.55;
  color: rgba(255,255,255,0.55);
}

/* RCD Callout */
.features__callout {
  grid-column: 1 / -1;
  border-radius: 14px;
  padding: clamp(20px, 2.5vw, 32px);
  background: linear-gradient(135deg, var(--gold), #C49A38);
  color: var(--black);
  text-align: center;
  margin-top: 4px;
}

.features__callout-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(0.95rem, 1.3vw, 1.2rem);
  margin-bottom: 4px;
}

.features__callout-text {
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: rgba(0,0,0,0.65);
}

/* --- Comparison Section --- */
.comparison {
  min-height: 100vh;
  padding-block: clamp(60px, 8vh, 100px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.comparison__grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 0;
  align-items: stretch;
}

.comparison__left,
.comparison__right {
  padding: clamp(28px, 3.5vw, 48px);
}

.comparison__left {
  border-radius: 16px 0 0 16px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-right: none;
}

.comparison__right {
  border-radius: 0 16px 16px 0;
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(255,255,255,0.06);
  border-left: none;
}

.comparison__badge {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 50px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 18px;
}

.comparison__badge--good {
  background: rgba(230,51,18,0.15);
  color: var(--primary-light);
  border: 1px solid rgba(230,51,18,0.3);
}

.comparison__badge--bad {
  background: rgba(255,255,255,0.05);
  color: var(--gray-500);
  border: 1px solid rgba(255,255,255,0.1);
}

.comparison__title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(1.2rem, 2vw, 1.7rem);
  margin-bottom: 20px;
  color: var(--white);
}

.comparison__image {
  width: 100%;
  max-width: 260px;
  margin: 0 auto 22px;
  border-radius: 10px;
}

.comparison__list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.comparison__list-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  line-height: 1.5;
  color: rgba(255,255,255,0.8);
}

.comparison__list-item svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  margin-top: 2px;
}

.comparison__list-item--good svg { color: #4ade80; }
.comparison__list-item--bad svg { color: var(--primary); }

/* VS divider column */
.comparison__divider {
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  padding: 0;
  width: 56px;
}

.comparison__divider::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 2px;
  background: linear-gradient(to bottom, transparent, var(--primary), transparent);
  transform: translateX(-50%);
}

.comparison__divider-label {
  position: sticky;
  top: 50vh;
  background: var(--primary);
  color: var(--white);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  z-index: 1;
}

/* --- Product Lineup --- */
.lineup {
  min-height: 100vh;
  padding-block: clamp(60px, 8vh, 100px);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.lineup__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: clamp(20px, 3vw, 36px);
  max-width: 860px;
  margin-inline: auto;
}

.lineup__card {
  border-radius: 20px;
  padding: clamp(28px, 3.5vw, 44px);
  text-align: center;
  transition: transform 0.4s var(--ease-out), box-shadow 0.4s;
}

.lineup__card:hover {
  transform: translateY(-6px);
}

.lineup__card-image {
  width: clamp(100px, 16vw, 180px);
  height: auto;
  margin: 0 auto 20px;
}

.lineup__card-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(1.1rem, 1.4vw, 1.35rem);
  margin-bottom: 10px;
}

.lineup__card-spec {
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--gray-500);
  margin-bottom: 3px;
}

.lineup__card-powers {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.88rem;
  color: var(--gray-500);
  margin: 10px 0;
  line-height: 1.7;
}

.lineup__card-price {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(1.6rem, 2.5vw, 2.2rem);
  color: var(--primary);
  margin-top: 14px;
}

.lineup__note {
  font-family: var(--font-body);
  text-align: center;
  font-size: 0.85rem;
  color: var(--gray-500);
  max-width: 680px;
  margin: 28px auto 0;
  line-height: 1.6;
}

/* --- Package Contents: Horizontal Scroll (full-screen pinned) --- */
.package {
  min-height: 100vh;
  position: relative;
  padding-top: calc(var(--nav-height-scrolled) + 24px);
  /* no overflow:hidden — conflicts with GSAP pin */
}

.package__header {
  padding: clamp(40px, 6vh, 80px) var(--container-padding) clamp(20px, 3vh, 40px);
  max-width: var(--container-max);
  margin-inline: auto;
}

.package__track-wrapper {
  overflow: hidden;
  width: 100%;
}

.package__track {
  display: flex;
  gap: 24px;
  padding-inline: var(--container-padding);
  will-change: transform;
}

.package__item {
  flex-shrink: 0;
  width: clamp(240px, 28vw, 340px);
  border-radius: 16px;
  padding: clamp(24px, 3vw, 36px);
  text-align: center;
}

.package__item-icon {
  width: 52px;
  height: 52px;
  margin: 0 auto 16px;
  color: var(--primary-light);
}

.package__item-icon svg {
  width: 100%;
  height: 100%;
}

.package__item-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 6px;
  color: var(--white);
}

.package__item-text {
  font-family: var(--font-body);
  font-size: 0.92rem;
  color: rgba(255,255,255,0.55);
  line-height: 1.5;
}

.package__tagline {
  text-align: center;
  margin-top: 48px;
  font-family: var(--font-accent);
  font-size: clamp(1.4rem, 2.5vw, 2.2rem);
  color: var(--gold);
  padding: 0 var(--container-padding);
}

/* --- Guarantee Section --- */
.guarantee {
  min-height: 100vh;
  padding-block: clamp(60px, 8vh, 100px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}

.guarantee__number {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(9rem, 22vw, 18rem);
  line-height: 0.85;
  color: var(--primary);
  margin-bottom: 4px;
  user-select: none;
}

.guarantee__years {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  margin-bottom: 24px;
  color: var(--white);
}

.section--offwhite .guarantee__years,
.section--offwhite .guarantee__number {
  color: var(--black);
}
.section--offwhite .guarantee__number {
  color: var(--primary);
}
.section--offwhite .guarantee__years {
  color: var(--black);
}

.guarantee__text {
  font-family: var(--font-body);
  font-size: clamp(1rem, 1.3vw, 1.2rem);
  max-width: 580px;
  margin: 0 auto 16px;
  line-height: 1.6;
}

.section--dark .guarantee__text {
  color: var(--gray-300);
}

.guarantee__highlight {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(1rem, 1.4vw, 1.25rem);
  color: var(--primary);
  max-width: 680px;
  margin: 20px auto 0;
  line-height: 1.4;
}

/* --- Advantages Section --- */
.advantages {
  min-height: 100vh;
  padding-block: clamp(60px, 8vh, 100px);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.advantages__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.advantages__card {
  border-radius: 16px;
  padding: clamp(24px, 3vw, 36px);
  transition: transform 0.3s var(--ease-out), box-shadow 0.3s;
}

.advantages__card:hover {
  transform: translateY(-4px);
}

.advantages__card-icon {
  width: 44px;
  height: 44px;
  margin-bottom: 14px;
  color: var(--primary);
}

.advantages__card-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(1rem, 1.2vw, 1.15rem);
  margin-bottom: 8px;
}

.advantages__card-text {
  font-family: var(--font-body);
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--gray-500);
}

.section--dark .advantages__card-text {
  color: var(--gray-300);
}

/* --- Dealers Section --- */
.dealers {
  min-height: 100vh;
  padding-block: clamp(60px, 8vh, 100px);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.dealers__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(32px, 5vw, 80px);
  align-items: center;
}

.dealers__title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(1.5rem, 2.5vw, 2.2rem);
  margin-bottom: 16px;
}

.dealers__text {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--gray-500);
  line-height: 1.7;
  margin-bottom: 20px;
}

.dealers__graphic {
  display: flex;
  align-items: center;
  justify-content: center;
}

.dealers__graphic-circle {
  width: clamp(200px, 25vw, 320px);
  height: clamp(200px, 25vw, 320px);
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--white);
  text-align: center;
  padding: 32px;
}

.dealers__graphic-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(1.1rem, 1.6vw, 1.4rem);
  margin-bottom: 8px;
}

.dealers__graphic-text {
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: rgba(255,255,255,0.7);
}

/* --- Contacts Section --- */
.contacts {
  min-height: 100vh;
  padding-block: clamp(60px, 8vh, 100px);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.contacts__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.contacts__item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 18px;
  border-radius: 12px;
  transition: background 0.3s;
}

.contacts__item:hover {
  background: rgba(255,255,255,0.03);
}

.contacts__item-icon {
  width: 46px;
  height: 46px;
  border-radius: 13px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  background: rgba(230,51,18,0.08);
  color: var(--primary);
}

.section--dark .contacts__item-icon {
  background: rgba(255,255,255,0.06);
  color: var(--primary-light);
}

.contacts__item-icon svg { width: 22px; height: 22px; }

.contacts__item-label {
  font-family: var(--font-body);
  font-size: 0.82rem;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 4px;
}

.contacts__item-value {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1rem;
  color: var(--white);
  transition: color 0.3s;
}

a.contacts__item-value:hover { color: var(--primary-light); }

.contacts__apps { display: flex; gap: 14px; margin-top: 6px; }

.contacts__app-badge {
  height: 40px;
  width: auto;
  border-radius: 8px;
  transition: transform 0.3s;
}

.contacts__app-badge:hover { transform: scale(1.06); }

/* --- Responsive --- */
@media (max-width: 1024px) {
  .features__grid { grid-template-columns: repeat(2, 1fr); }

  .comparison__grid { grid-template-columns: 1fr; }
  .comparison__divider { display: none; }
  .comparison__left { border-radius: 16px 16px 0 0; border: 1px solid rgba(255,255,255,0.08); border-bottom: none; }
  .comparison__right { border-radius: 0 0 16px 16px; border: 1px solid rgba(255,255,255,0.06); }

  .dealers__grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .features__grid { grid-template-columns: 1fr; }
  .philosophy { height: 350vh; }
  .product-hero__stats { flex-direction: column; gap: 20px; }
  .lineup__grid { grid-template-columns: 1fr; }
  .advantages__grid { grid-template-columns: 1fr; }
  .contacts__grid { grid-template-columns: 1fr; }

  /* On mobile, horizontal scroll becomes vertical */
  .package__track {
    flex-direction: column;
    align-items: center;
  }
  .package__item { width: 100%; max-width: 380px; }
}

@media (prefers-reduced-motion: reduce) {
  .philosophy__canvas { display: none; }
  .philosophy { height: auto; min-height: 100vh; }
  .philosophy__sticky {
    position: relative;
    height: auto;
    min-height: 100vh;
    background: var(--black);
  }
  .philosophy__phase { position: static; transform: none; opacity: 1; }
}