/**
 * Landing — композиция поверх admin-tokens.css
 * Локальный превью: landing-preview.html (боевой index.html не трогаем).
 */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body.landing {
  margin: 0;
  min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.45;
  background: var(--admin-bg);
  color: var(--admin-text);
  -webkit-font-smoothing: antialiased;
}

body.landing:focus-visible,
.landing :focus-visible {
  outline: 3px solid var(--admin-focus-ring);
  outline-offset: 2px;
}

.landing a {
  color: inherit;
  text-decoration: none;
}

.landing-shell {
  position: relative;
  /* overflow-x: clip ломает native hash-scroll к #videos в части браузеров */
  overflow-x: visible;
}

.landing-page-glow {
  position: absolute;
  left: 50%;
  top: -420px;
  z-index: 0;
  width: min(1920px, 160vw);
  height: 952px;
  transform: translateX(-50%);
  opacity: 0.5;
  background: radial-gradient(
    ellipse 50% 49% at 50% 50%,
    #940d04 0%,
    #09090b 100%
  );
  pointer-events: none;
  filter: blur(55px);
}

.landing-main {
  position: relative;
  z-index: 1;
}

/* ——— Header (Figma) ——— */
.landing-header {
  position: sticky;
  top: 0;
  z-index: 50;
  padding: 8px 0;
  background: rgba(17, 17, 17, 0.7);
  border-bottom: 2px solid rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.landing-header__inner {
  width: 100%;
  max-width: 1152px;
  margin: 0 auto;
  padding: 4px 24px;
  min-height: 48px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 16px;
}

.landing-logo {
  display: inline-flex;
  align-items: center;
  justify-self: start;
  flex-shrink: 0;
}

.landing-logo img {
  display: block;
  height: 18px;
  width: auto;
}

.landing-nav {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 4px;
  justify-self: center;
}

.landing-nav__link {
  padding: 8px 14px;
  border-radius: 999px;
  color: #86868b;
  font-size: 14px;
  font-weight: 500;
  line-height: 20px;
  transition: background 120ms ease, color 120ms ease, transform 100ms ease-out;
}

.landing-nav__link:hover {
  color: #f5f5f7;
  background: rgba(255, 255, 255, 0.06);
}

.landing-nav__link:active {
  transform: scale(0.97);
}

.landing-nav__link.is-active {
  color: #f5f5f7;
  background: rgba(255, 255, 255, 0.1);
}

.landing-menu-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  justify-self: end;
  grid-column: 3;
  width: 44px;
  height: 44px;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: var(--admin-radius-sm);
  background: transparent;
  color: #f5f5f7;
  cursor: pointer;
  transition: background 120ms ease, transform 100ms ease-out;
}

.landing-menu-btn:hover {
  background: rgba(255, 255, 255, 0.06);
}

.landing-menu-btn:active {
  transform: scale(0.96);
}

.landing-menu-btn__icon {
  display: block;
  width: 22px;
  height: 14px;
  position: relative;
}

.landing-menu-btn__icon::before,
.landing-menu-btn__icon::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  border-radius: 1px;
  background: currentColor;
}

.landing-menu-btn__icon::before {
  top: 2px;
}

.landing-menu-btn__icon::after {
  bottom: 2px;
}

/* ——— Mobile menu ——— */
.landing-menu {
  position: fixed;
  inset: 0;
  z-index: 60;
  display: flex;
  flex-direction: column;
  padding: var(--admin-space-3) var(--admin-space-6);
  background: color-mix(in srgb, var(--admin-bg) 78%, transparent);
  backdrop-filter: blur(28px) saturate(180%);
  -webkit-backdrop-filter: blur(28px) saturate(180%);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 220ms ease, visibility 220ms ease;
}

.landing-menu.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.landing-menu__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--admin-header-height);
}

.landing-menu__close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: var(--admin-radius-sm);
  background: transparent;
  color: var(--admin-text);
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
}

.landing-menu__nav {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--admin-space-3);
  margin-top: var(--admin-space-8);
  padding-left: var(--admin-space-2);
}

.landing-menu__nav a {
  padding: 10px 16px;
  border-radius: var(--admin-radius-md);
  font-size: 28px;
  font-weight: var(--admin-font-weight-bold);
  letter-spacing: -0.02em;
  color: var(--admin-text);
  transition: background 120ms ease, transform 100ms ease-out;
}

.landing-menu__nav a.is-active {
  background: var(--admin-active-fill);
}

.landing-menu__nav a:active {
  transform: scale(0.98);
}

/* ——— Hero (Figma 1920: title 96/96, sub 28/32, content 1152) ——— */
.landing-hero {
  position: relative;
  padding: 56px 24px 48px;
  text-align: center;
}

.landing-hero__inner {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 1152px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  animation: landing-hero-in 520ms cubic-bezier(0.22, 1, 0.36, 1) both;
}

.landing-hero__title {
  margin: 0;
  width: 100%;
  max-width: none;
  /* 320→40px, 1920→96px */
  font-size: clamp(40px, 5vw, 96px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: #f5f5f7;
  white-space: nowrap;
}

.landing-hero__subtitle {
  margin: 0;
  width: 100%;
  max-width: 920px;
  font-size: clamp(17px, 1.45vw, 28px);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: 0.2px;
  color: #86868b;
  white-space: nowrap;
}

.landing-notice {
  width: 100%;
  max-width: 672px;
  margin: 0;
  padding: 12px 16px;
  border-radius: 12px;
  border: 1px solid rgba(255, 185, 0, 0.3);
  background: rgba(254, 154, 0, 0.1);
  color: #f5f5f7;
  font-size: clamp(14px, 0.9vw, 14px);
  line-height: 20px;
  text-align: center;
}

.landing-notice a {
  color: #ef3124;
  font-weight: 400;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.landing-hero__actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  margin-top: 0;
  padding-top: 16px;
  width: 100%;
}

.landing-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: 224px;
  min-height: 56px;
  padding: 16px 24px;
  border: 0;
  border-radius: 12px;
  background: #f5f5f7;
  color: #09090b;
  font-size: 17px;
  font-weight: 600;
  line-height: 25px;
  letter-spacing: 0;
  cursor: pointer;
  box-shadow: none;
  transition: transform 100ms ease-out, opacity 120ms ease, background 120ms ease;
}

.landing-cta:hover {
  background: #fff;
}

.landing-cta:active {
  transform: scale(0.97);
}

.landing-link-secondary {
  color: #ef3124 !important;
  font-size: clamp(14px, 0.9vw, 17px);
  font-weight: 400;
  line-height: 25px;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: opacity 120ms ease, transform 100ms ease-out;
}

.landing-link-secondary:hover {
  opacity: 0.9;
}

.landing-link-secondary:active {
  transform: scale(0.98);
}

/* Figma VersionDivider — label muted, date bright */
body.landing .landing-version {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  align-self: stretch;
  width: 100%;
  background: #1d1d1f;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

body.landing .landing-version__inner {
  width: 100%;
  max-width: 1152px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  flex-wrap: nowrap;
  text-align: center;
  white-space: nowrap;
}

body.landing .landing-version__label {
  color: #86868b;
  font-size: 14px;
  font-weight: 400;
  line-height: 20px;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, sans-serif;
  word-wrap: break-word;
}

body.landing .landing-version__date {
  color: #f5f5f7;
  font-size: 14px;
  font-weight: 400;
  line-height: 20px;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, sans-serif;
  word-wrap: break-word;
}

/* ——— Videos ——— */
.landing-videos {
  padding: 16px 24px 48px;
  max-width: 1152px;
  margin: 0 auto;
  scroll-margin-top: 88px;
}

.landing-videos__head {
  max-width: none;
  margin-bottom: 16px;
}

.landing-videos__title {
  margin: 0 0 8px;
  font-size: clamp(28px, 2.1vw, 40px);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: #f5f5f7;
}

.landing-videos__lead {
  margin: 0;
  color: #86868b;
  font-size: clamp(15px, 0.95vw, 17px);
  line-height: 1.45;
}

.landing-videos__lead a {
  color: #ef3124;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.landing-videos__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--admin-space-4);
}

.landing-video-card {
  position: relative;
  display: flex;
  flex-direction: column;
  width: 100%;
  padding: 8px;
  border: 0;
  border-radius: 18px;
  outline: 1.5px solid rgba(255, 255, 255, 0.06);
  outline-offset: -1.5px;
  overflow: hidden;
  background: transparent;
  cursor: pointer;
  text-align: left;
  color: #fff;
  transition: transform 140ms ease-out, outline-color 140ms ease, box-shadow 140ms ease;
}

.landing-video-card:hover {
  outline-color: rgba(255, 255, 255, 0.14);
  box-shadow: var(--admin-shadow-md);
  transform: translateY(-2px);
}

.landing-video-card:active {
  transform: scale(0.985);
}

.landing-video-card__frame {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  border-radius: 12px;
  overflow: hidden;
  background: var(--admin-preview-well-deep);
}

.landing-video-card__frame.is-empty-thumb {
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.04), transparent 50%),
    var(--admin-preview-well-deep);
}

.landing-video-card__media {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}

.landing-video-card__scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(0, 0, 0, 0) 0%,
    rgba(0, 0, 0, 0) 42%,
    rgba(0, 0, 0, 0.45) 68%,
    rgba(0, 0, 0, 0.82) 100%
  );
  pointer-events: none;
  z-index: 1;
}

.landing-video-card__title {
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 12px;
  z-index: 2;
  margin: 0;
  color: #f5f5f7;
  font-size: clamp(14px, 1.2vw, 17px);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.015em;
  text-shadow: 0 1px 10px rgba(0, 0, 0, 0.65);
}

.landing-video-card__play {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 52px;
  height: 52px;
  margin: -26px 0 0 -26px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.45);
  border: 1px solid rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: grid;
  place-items: center;
  opacity: 0;
  transform: scale(0.92);
  transition: opacity 160ms ease, transform 160ms ease;
  pointer-events: none;
  z-index: 3;
}

.landing-video-card__play::before {
  content: "";
  width: 0;
  height: 0;
  margin-left: 3px;
  border-style: solid;
  border-width: 8px 0 8px 14px;
  border-color: transparent transparent transparent #fff;
}

.landing-video-card:hover .landing-video-card__play,
.landing-video-card:focus-visible .landing-video-card__play {
  opacity: 1;
  transform: scale(1);
}

@media (hover: none) {
  .landing-video-card__play {
    opacity: 0.92;
    transform: scale(1);
  }
}

/* ——— Video sheet / modal ——— */
.landing-sheet {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: max(16px, env(safe-area-inset-top)) 16px max(16px, env(safe-area-inset-bottom));
  background: var(--admin-overlay);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 220ms ease, visibility 220ms ease;
}

.landing-sheet.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.landing-sheet__panel {
  width: min(960px, 100%);
  border-radius: var(--admin-radius-lg);
  border: 1px solid var(--admin-border);
  background: var(--admin-surface);
  box-shadow: var(--admin-shadow-md);
  overflow: hidden;
  transform: translateY(12px) scale(0.98);
  opacity: 0;
  transition: transform 280ms cubic-bezier(0.22, 1, 0.36, 1), opacity 220ms ease;
}

.landing-sheet.is-open .landing-sheet__panel {
  transform: none;
  opacity: 1;
}

.landing-sheet__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--admin-space-3);
  padding: 14px 16px;
  border-bottom: 1px solid var(--admin-border-subtle);
}

.landing-sheet__title {
  margin: 0;
  font-size: var(--admin-font-size-lg);
  font-weight: var(--admin-font-weight-semibold);
  letter-spacing: -0.015em;
  color: var(--admin-text);
}

.landing-sheet__close {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border: 0;
  border-radius: var(--admin-radius-sm);
  background: var(--admin-hover-fill);
  color: var(--admin-text);
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
  transition: background 120ms ease, transform 100ms ease-out;
}

.landing-sheet__close:hover {
  background: var(--admin-active-fill);
}

.landing-sheet__close:active {
  transform: scale(0.96);
}

.landing-sheet__player {
  position: relative;
  aspect-ratio: 16 / 9;
  background: #000;
}

.landing-sheet__player iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.landing-sheet__empty {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 12px;
  padding: 24px;
  text-align: center;
  color: var(--admin-text-muted);
  font-size: var(--admin-font-size-lg);
  background: var(--admin-preview-well-deep);
}

.landing-sheet__empty p {
  margin: 0;
}

.landing-sheet__fallback {
  color: #ef3124;
  font-size: 15px;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.landing-sheet__empty[hidden],
.landing-sheet__player iframe[hidden] {
  display: none !important;
}

body.landing-sheet-open {
  overflow: hidden;
}

@keyframes landing-hero-in {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ——— Breakpoints ——— */
@media (max-width: 900px) {
  .landing-header__inner {
    display: flex;
    justify-content: space-between;
  }

  .landing-menu-btn {
    grid-column: auto;
  }

  .landing-hero {
    padding-top: 32px;
  }

  .landing-hero__title,
  .landing-hero__subtitle {
    white-space: normal;
  }

  .landing-hero__title {
    font-weight: 600;
    line-height: 1.1;
  }
}

@media (min-width: 640px) {
  .landing-videos__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 901px) {
  .landing-nav {
    display: flex;
  }

  .landing-menu-btn {
    display: none;
  }

  .landing-videos__grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (max-width: 1100px) and (min-width: 901px) {
  .landing-hero__title {
    font-size: clamp(56px, 7.2vw, 96px);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .landing-hero__inner,
  .landing-sheet,
  .landing-sheet__panel,
  .landing-menu,
  .landing-cta,
  .landing-video-card,
  .landing-nav__link {
    animation: none !important;
    transition: opacity 160ms ease, background 120ms ease, border-color 120ms ease !important;
    transform: none !important;
  }

  .landing-sheet.is-open .landing-sheet__panel {
    transform: none;
  }
}

@media (prefers-reduced-transparency: reduce) {
  .landing-header,
  .landing-menu,
  .landing-sheet {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  .landing-header {
    background: #111;
  }

  .landing-menu {
    background: var(--admin-bg);
  }

  .landing-sheet {
    background: var(--admin-overlay);
  }

  .landing-video-card__play {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    background: rgba(0, 0, 0, 0.72);
  }
}