/* =============================================================================
   QTEZH landing.css — section styling for the home/landing page.
   Uses :root tokens from theme.css. Mobile-first (min-width 320/480/640/960/1200).
   ========================================================================== */

/* ---------------------------------------------------------------------------
   Shared section scaffolding
   ------------------------------------------------------------------------- */
.landing { overflow-x: hidden; }

.section {
  padding-block: var(--space-7) var(--space-4); /* ~75 top / 30 bottom mobile */
}
@media (min-width: 960px) {
  .section { padding-block: var(--space-8) var(--space-4); } /* 90 / 30 desktop */
}

.section__heading {
  text-align: center;
  margin-bottom: var(--space-2);
}
.section__intro {
  max-width: var(--content-reading);
  margin: 0 auto var(--space-5);
  text-align: center;
  color: var(--text-muted);
  font-size: var(--fs-body-lg);
  line-height: var(--lh-base);
}
.section__footnote {
  margin-top: var(--space-4);
  font-size: var(--fs-caption);
  color: var(--text-dim);
  line-height: var(--lh-snug);
}

.container--narrow { max-width: var(--content-reading); }

/* ---------------------------------------------------------------------------
   Hero — text left / VK video right
   ------------------------------------------------------------------------- */
.hero {
  background-color: var(--bg);
  padding-block: var(--space-6) var(--space-7);
}
.hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
  align-items: center;
}
.hero__title { margin-bottom: var(--space-3); }
.hero__subtitle {
  color: var(--text-muted);
  font-size: var(--fs-body-lg);
  line-height: var(--lh-base);
  margin-bottom: var(--space-4);
}
.hero__cta { font-size: var(--fs-body); }

/* --- Full-screen cover hero with background video ----------------------- */
.hero--cover {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  display: flex;
  align-items: center;
  min-height: calc(100vh - var(--header-h-mobile));
  padding-block: var(--space-7);
  background-color: #000;
}
.hero__video {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero__overlay {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(to bottom, rgba(0, 0, 0, 0.55), rgba(0, 0, 0, 0.80));
}
.hero--cover .hero__inner {
  display: block;
}
.hero--cover .hero__text { max-width: 720px; }
.hero--cover .hero__title { color: var(--on-dark); }
.hero--cover .hero__subtitle { color: rgba(255, 255, 255, 0.85); }

/* Sound toggle over the background video */
.hero__sound {
  position: absolute;
  top: var(--space-4);
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 44px;
  padding: 0 18px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 255, 255, 0.35);
  background: rgba(0, 0, 0, 0.45);
  color: #fff;
  font-size: var(--fs-caption);
  font-weight: var(--fw-semibold);
  cursor: pointer;
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  transition: background var(--transition), border-color var(--transition),
              color var(--transition), transform var(--transition);
}
.hero__sound:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--on-accent);
  transform: translateX(-50%) scale(1.05);
}
.hero__sound:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.hero__sound-icon { flex: 0 0 auto; }
.hero__sound-label { white-space: nowrap; }
.hero__sound-icon--on { display: none; }
.hero__sound.is-on .hero__sound-icon--on { display: block; }
.hero__sound.is-on .hero__sound-icon--muted { display: none; }

@media (min-width: 960px) {
  .hero--cover {
    min-height: calc(100vh - var(--header-h-desktop));
    padding-block: var(--space-8);
  }
}
@media (prefers-reduced-motion: reduce) {
  .hero__video { display: none; }
}

/* ---------------------------------------------------------------------------
   Marquee — auto-scrolling city ticker
   ------------------------------------------------------------------------- */
.marquee {
  background-color: var(--accent);
  color: var(--on-accent);
  overflow: hidden;
  padding-block: 12px;
}
.marquee__track {
  display: flex;
  width: max-content;
  animation: marquee-scroll 24s linear infinite;
}
.marquee__group {
  display: flex;
  align-items: center;
  flex: 0 0 auto;
}
.marquee__item {
  font-size: 20px;
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding-inline: var(--space-4);
  position: relative;
  white-space: nowrap;
}
/* Black dot separators between cities. */
.marquee__item::after {
  content: "";
  position: absolute;
  right: -4px;
  top: 50%;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--on-accent);
  transform: translateY(-50%);
}
.marquee:hover .marquee__track { animation-play-state: paused; }

@keyframes marquee-scroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}
@media (prefers-reduced-motion: reduce) {
  .marquee__track { animation: none; }
}

/* ---------------------------------------------------------------------------
   Card grids (features #about + guests)
   ------------------------------------------------------------------------- */
.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}
@media (min-width: 640px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
}

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-card);
  overflow: hidden;
  background: var(--card-gradient), var(--bg-elevated);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition), box-shadow var(--transition);
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card), var(--shadow-soft); }

.card__media {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}
.card__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.card__body { padding: var(--space-4); }
.card__title { margin-bottom: var(--space-1); }
.card__text { margin: 0; color: var(--text-muted); font-size: var(--fs-body); }

/* Feature cards — compact: lime line icon instead of a tall image banner */
.card--feature .card__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: rgba(var(--accent-rgb), 0.12);
  color: var(--accent);
  margin-bottom: var(--space-1);
}
.card__icon svg { width: 30px; height: 30px; }
.card__icon-img { width: 34px; height: 34px; object-fit: contain; }

/* ---------------------------------------------------------------------------
   Reviews (#clients)
   ------------------------------------------------------------------------- */
/* Carousel: horizontal scroll-snap track, 3 cards per view on desktop.
   Works without JS (native swipe/scroll); JS adds arrows + dots. */
.review-carousel { position: relative; }
.review-track {
  display: flex;
  gap: var(--space-4);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding-bottom: 2px;
}
.review-track::-webkit-scrollbar { display: none; }
.review-track > .review {
  scroll-snap-align: start;
  flex: 0 0 100%;
}
@media (min-width: 640px) {
  .review-track > .review { flex-basis: calc((100% - var(--space-4)) / 2); }
}
@media (min-width: 960px) {
  .review-track > .review { flex-basis: calc((100% - 2 * var(--space-4)) / 3); }
}

.review-carousel__nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  margin-top: var(--space-4);
}
.review-carousel__btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border-light);
  background: var(--bg-elevated);
  color: var(--on-dark);
  font-size: 24px;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition), opacity var(--transition);
}
.review-carousel__btn:hover { border-color: var(--accent); color: var(--accent); }
.review-carousel__btn[disabled] { opacity: 0.3; cursor: default; }
.review-carousel__dots { display: inline-flex; align-items: center; gap: 8px; }
.review-carousel__dot {
  width: 8px;
  height: 8px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: var(--text-dim);
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
}
.review-carousel__dot.is-active { background: var(--accent); transform: scale(1.35); }

.review {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-4);
  background-color: var(--bg-elevated);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-soft);
  transition: transform var(--transition), border-color var(--transition);
}
.review:hover {
  transform: translateY(-4px);
  border-color: rgba(var(--accent-rgb), 0.35);
}
.review__text {
  margin: 0;
  color: var(--on-dark);
  line-height: var(--lh-base);
  font-size: var(--fs-body);
}
.review__text::before {
  content: '\201C';
  display: block;
  margin-bottom: -8px;
  color: var(--accent);
  font: 700 56px/0.7 Georgia, 'Times New Roman', serif;
}
.review__author {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: auto;
  padding-top: var(--space-3);
  border-top: 1px solid rgba(255, 255, 255, 0.07);
}
.review__avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  object-fit: cover;
  flex: 0 0 auto;
  background-color: var(--bg);
  border: 2px solid rgba(var(--accent-rgb), 0.5);
}
.review__name { color: var(--on-dark); font-weight: var(--fw-semibold); font-size: var(--fs-body); }

/* Install card as a direct link to wiki (variant without accordion) */
.howto-card__banner--link { text-decoration: none; color: inherit; cursor: pointer; }

/* ---------------------------------------------------------------------------
   How to install (#howtoinstall)
   ------------------------------------------------------------------------- */
/* Wide gradient banner cards. Mobile-first: 1 column stacked, becoming a
   3-up row on tablet/desktop. Each banner is a colored gradient + device
   illustration baked into a background image; the large label sits
   bottom-left. Clicking a banner reveals the install instruction via a
   native <details>. */
.howto-cards {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
}
@media (min-width: 640px) {
  .howto-cards { grid-template-columns: repeat(3, 1fr); gap: var(--space-3); }
}
@media (min-width: 960px) {
  .howto-cards { gap: var(--space-4); }
}

.howto-card { min-width: 0; }
.howto-card__details { margin: 0; }

/* The clickable banner (summary) */
.howto-card__banner {
  position: relative;
  display: flex;
  align-items: flex-end;
  aspect-ratio: 582 / 280;
  padding: var(--space-3);
  border-radius: var(--radius-card);
  overflow: hidden;
  cursor: pointer;
  list-style: none;                 /* hide default disclosure triangle */
  background-color: var(--bg-elevated);
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  box-shadow: var(--shadow-soft);
  transition: box-shadow var(--transition), transform var(--transition);
}
.howto-card__banner::-webkit-details-marker { display: none; }
.howto-card__banner::marker { content: ''; }

/* Per-variant gradient fallback (shown if the image fails to load) sits
   behind the device illustration baked into the background image. */
.howto-card--green  .howto-card__banner { background-color: #11998e; }
.howto-card--blue   .howto-card__banner { background-color: #1d5ad9; }
.howto-card--purple .howto-card__banner { background-color: #5b2ad9; }

.howto-card__banner:hover,
.howto-card__banner:focus-visible {
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}
.howto-card__banner:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.howto-card__label {
  color: var(--on-dark);
  font-size: 24px;
  font-weight: var(--fw-bold);
  line-height: var(--lh-tight);
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.35);
}
@media (min-width: 480px) { .howto-card__label { font-size: 28px; } }
@media (min-width: 960px) { .howto-card__label { font-size: 32px; } }
@media (min-width: 1200px) { .howto-card__label { font-size: 36px; } }

/* Revealed instruction panel */
.howto-card__instruction {
  padding: var(--space-2) var(--space-1) 0;
}
.howto-card__text {
  margin: 0;
  color: var(--text-muted);
  font-size: var(--fs-caption);
  line-height: var(--lh-base);
}
.howto-card__cta {
  display: inline-block;
  margin-top: var(--space-1);
  color: var(--accent);
  font-size: var(--fs-caption);
  font-weight: var(--fw-semibold);
}
.howto-card__details[open] .howto-card__banner { box-shadow: var(--shadow-xs); }

/* ---------------------------------------------------------------------------
   Pricing (#price)
   ------------------------------------------------------------------------- */
.pricing-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  max-width: var(--content-narrow);
  margin-inline: auto;
}
@media (min-width: 640px) { .pricing-grid { grid-template-columns: repeat(2, 1fr); } }

.tier {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-5) var(--space-4);
  background-color: var(--bg-elevated);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-soft);
}
.tier--featured {
  border-color: var(--accent);
  box-shadow: var(--shadow-card);
}
.tier__badge {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  padding: 3px 12px;
  background-color: var(--accent);
  color: var(--on-accent);
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: var(--fw-bold);
}
.tier__name { margin: 0; }
.tier__price { margin: 0; font-size: 28px; font-weight: var(--fw-bold); color: var(--accent); }
.tier__features { margin: 0; color: var(--text-muted); font-size: var(--fs-body); }
.tier__cta { margin-top: auto; }

/* ---------------------------------------------------------------------------
   FAQ (#faq) — native <details> accordion
   ------------------------------------------------------------------------- */
.faq-list { display: flex; flex-direction: column; gap: var(--space-2); }

.faq-item {
  background-color: var(--bg-elevated);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}
.faq-item__q {
  list-style: none;
  cursor: pointer;
  padding: var(--space-3) var(--space-4);
  font-size: 18px;
  font-weight: var(--fw-semibold);
  color: var(--on-dark);
  position: relative;
  padding-right: 48px;
}
.faq-item__q::-webkit-details-marker { display: none; }
.faq-item__q::after {
  content: "+";
  position: absolute;
  right: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  font-size: 24px;
  line-height: 1;
  color: var(--accent);
  transition: transform var(--transition);
}
.faq-item[open] .faq-item__q::after { content: "−"; }
.faq-item__a {
  padding: 0 var(--space-4) var(--space-3);
  color: var(--text-muted);
  line-height: var(--lh-base);
}
.faq-item__a p { margin: 0 0 var(--space-2); }
.faq-item__a p:last-child { margin-bottom: 0; }

/* ---------------------------------------------------------------------------
   Contacts (#contacts)
   ------------------------------------------------------------------------- */
.section--contacts { text-align: center; }

/* Slogan + social links + email card (Tilda t573 .t573__contacts, 36px). */
.contacts__card { font-size: var(--fs-h2); }
.contacts__slogan {
  margin: 0;
  color: var(--accent);
  font-weight: var(--fw-bold);
  line-height: var(--lh-tight);
}
.contacts__socials {
  margin: var(--space-2) 0 0;
  line-height: var(--lh-tight);
}
.contacts__social {
  text-decoration: none;
  font-weight: var(--fw-semibold);
}
.contacts__social:hover { text-decoration: underline; text-underline-offset: 2px; }
.contacts__sep { color: var(--on-dark); }
.contacts__email {
  margin: var(--space-2) 0 0;
  line-height: var(--lh-tight);
}
.contacts__email a {
  color: var(--link-orange);
  text-decoration: none;
  font-weight: var(--fw-semibold);
}
.contacts__email a:hover { text-decoration: underline; text-underline-offset: 2px; }

/* Company legal block (Tilda t573 .t573__address, 18px, muted). */
.contacts__legal {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-top: var(--space-5);
  font-size: 18px;
  line-height: var(--lh-snug);
  color: var(--text-pinkish);
}
.contacts__company {
  font-weight: var(--fw-bold);
  margin-bottom: var(--space-1);
}
.contacts__legal-line { display: block; }

@media (min-width: 640px) {
  .contacts__legal { font-size: 18px; }
}