/* ==========================================================================
   ТЕССЕРА — лендинг
   Опирается на tokens.css и tiles.css. Здесь только раскладка секций
   и то, что нужно моторике из motion.js.
   ========================================================================== */

/* ==========================================================================
   Слой моторики
   ========================================================================== */

.split__line {
  display: block;
  overflow: hidden;
  padding-block-end: 0.08em;
  margin-block-end: -0.08em;
}

.split__word-mask {
  display: inline-block;
  overflow: hidden;
  vertical-align: bottom;
  padding-block-end: 0.08em;
  margin-block-end: -0.08em;
}

.split__inner {
  display: inline-block;
  will-change: transform;
}

/* --------------------------------------------------------------------------
   Вскрытие блоков.

   Все правила ниже висят под `.motion-ready` — классом, который motion.js
   ставит на <html> ровно тогда, когда наблюдатели заведены и анимация точно
   будет доведена до конца. Без этого класса ничего не спрятано: сбой скрипта,
   старый браузер или переход по якорю вглубь страницы дадут статичную, но
   полностью читаемую страницу вместо блоков с нулевой прозрачностью.
   -------------------------------------------------------------------------- */

.motion-ready [data-reveal],
.motion-ready [data-reveal-group] > * {
  opacity: 0;
  transform: translateY(42px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}

.motion-ready [data-reveal].is-revealed,
.motion-ready [data-reveal-group].is-revealed > * {
  opacity: 1;
  transform: none;
}

/* Дети группы всплывают по очереди. */
.motion-ready [data-reveal-group] > *:nth-child(2) { transition-delay: 0.09s; }
.motion-ready [data-reveal-group] > *:nth-child(3) { transition-delay: 0.18s; }
.motion-ready [data-reveal-group] > *:nth-child(4) { transition-delay: 0.27s; }
.motion-ready [data-reveal-group] > *:nth-child(5) { transition-delay: 0.36s; }

/* Строки заголовка выезжают из-под своей маски, каждая с шагом задержки. */
.motion-ready [data-split].is-split .split__inner {
  transform: translateY(108%) rotate(1.2deg);
  transition: transform 1.15s var(--ease);
  transition-delay: calc(var(--i, 0) * 0.085s);
}

.motion-ready [data-split].is-revealed .split__inner {
  transform: none;
}

.motion-ready [data-split='words'].is-split .split__inner {
  transition-delay: calc(var(--i, 0) * 0.035s);
}

/* Занавес --------------------------------------------------------------- */

.curtain {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: var(--ink);
  display: grid;
  place-items: center;
  transition: opacity 0.8s var(--ease), visibility 0.8s;
}

.curtain.is-lifted {
  opacity: 0;
  visibility: hidden;
}

.curtain__mark {
  font-family: var(--font-mark);
  font-size: var(--step-1);
  letter-spacing: 0.5em;
  text-indent: 0.5em;
  color: var(--gold);
  animation: pulse 1.8s var(--ease-soft) infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 0.35; }
  50% { opacity: 1; }
}

/* Курсор ---------------------------------------------------------------- */

.has-cursor,
.has-cursor a,
.has-cursor button {
  cursor: none;
}

.cursor {
  position: fixed;
  inset: 0;
  z-index: var(--z-cursor);
  pointer-events: none;
}

.cursor__dot,
.cursor__ring {
  position: absolute;
  inset-block-start: 0;
  inset-inline-start: 0;
  border-radius: 50%;
  translate: -50% -50%;
  will-change: transform;
}

.cursor__dot {
  width: 5px;
  height: 5px;
  margin: -2.5px 0 0 -2.5px;
  background: var(--gold-bright);
}

.cursor__ring {
  width: 34px;
  height: 34px;
  margin: -17px 0 0 -17px;
  border: 1px solid var(--line-strong);
  transition: width 0.35s var(--ease), height 0.35s var(--ease), margin 0.35s var(--ease),
    border-color 0.35s var(--ease);
}

.cursor.is-active .cursor__ring {
  width: 62px;
  height: 62px;
  margin: -31px 0 0 -31px;
  border-color: var(--gold);
}

/* ==========================================================================
   Шапка
   ========================================================================== */

.nav {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  z-index: var(--z-nav);
  padding-block: clamp(0.9rem, 1.4vw, 1.6rem);
  transition: transform 0.5s var(--ease), background-color 0.5s var(--ease),
    backdrop-filter 0.5s var(--ease);
}

.nav.is-scrolled {
  background: color-mix(in srgb, var(--ink) 78%, transparent);
  backdrop-filter: blur(14px) saturate(140%);
  border-block-end: var(--rule) solid var(--line);
}

.nav.is-hidden {
  transform: translateY(-105%);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--gutter);
}

.nav__mark {
  font-family: var(--font-mark);
  font-weight: 500;
  font-size: var(--step-1);
  letter-spacing: 0.34em;
  text-indent: 0.34em;
  color: var(--text);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2.4vw, 2.8rem);
  list-style: none;
  padding: 0;
}

@media (max-width: 40rem) {
  .nav__links li:not(:last-child) {
    display: none;
  }
}

.nav__progress {
  position: absolute;
  inset-block-end: 0;
  inset-inline: 0;
  height: 1px;
  background: var(--gold);
  transform-origin: left;
  transform: scaleX(0);
}

/* Ссылка, у которой подпись «перещёлкивается» вверх при наведении. */
.swap {
  position: relative;
  display: inline-block;
  overflow: hidden;
  font-size: var(--step--1);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 500;
  line-height: 1.4;
}

.swap span {
  display: block;
  transition: transform 0.5s var(--ease);
}

.swap span:last-child {
  position: absolute;
  inset-block-start: 0;
  inset-inline-start: 0;
  transform: translateY(105%);
  color: var(--gold-bright);
}

.swap:hover span:first-child {
  transform: translateY(-105%);
}

.swap:hover span:last-child {
  transform: translateY(0);
}

/* ==========================================================================
   Кнопки
   ========================================================================== */

.btn {
  --btn-bg: transparent;
  --btn-fg: var(--text);
  --btn-line: var(--line-strong);

  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.7em;
  padding: 1.05em 2.1em;
  border: var(--rule) solid var(--btn-line);
  border-radius: 999px;
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-size: var(--step--1);
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  overflow: hidden;
  isolation: isolate;
  transition: color 0.45s var(--ease), border-color 0.45s var(--ease);
}

/* Заливка приходит снизу — тот же жест, что и у перещёлкивания подписи. */
.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background: var(--gold);
  transform: translateY(101%);
  transition: transform 0.55s var(--ease);
}

.btn:hover {
  color: var(--ink);
  border-color: var(--gold);
}

.btn:hover::before {
  transform: translateY(0);
}

.btn--solid {
  --btn-bg: var(--gold);
  --btn-fg: var(--ink);
  --btn-line: var(--gold);
}

.btn--solid::before {
  background: var(--gold-bright);
}

.btn--solid:hover {
  color: var(--ink);
}

/* ==========================================================================
   Секции
   ========================================================================== */

.section {
  position: relative;
  padding-block: var(--section);
}

.section--paper {
  background: var(--paper);
  color: var(--text-on-paper);
}

.section--paper .eyebrow {
  color: var(--text-on-paper-dim);
}

.section__head {
  display: grid;
  gap: clamp(1.4rem, 3vw, 2.6rem);
  margin-block-end: clamp(2.6rem, 6vw, 6rem);
}

.section__title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: var(--step-3);
  line-height: 0.98;
  letter-spacing: -0.02em;
  max-width: 20ch;
}

.section__lead {
  max-width: 46ch;
  color: var(--text-dim);
  font-size: var(--step-1);
  line-height: 1.55;
}

.section--paper .section__lead {
  color: var(--text-on-paper-dim);
}

.rule {
  height: var(--rule);
  background: var(--line);
  border: 0;
}

/* ==========================================================================
   Первый экран
   ========================================================================== */

.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: flex-end;
  padding-block: clamp(7rem, 14vh, 11rem) clamp(2.5rem, 6vh, 5rem);
  overflow: hidden;
}

/* Поле плиток за текстом: рассыпанная мозаика, как на фото из коробки. */
.hero__field {
  position: absolute;
  inset: -12% -6%;
  z-index: 0;
  pointer-events: none;
}

.hero__tile {
  position: absolute;
  width: clamp(52px, 7vw, 104px);
  opacity: 0.5;
  filter: blur(0.2px);
}

.hero__glow {
  position: absolute;
  inset-block-start: 12%;
  inset-inline-start: 50%;
  translate: -50% 0;
  width: min(120vw, 1200px);
  aspect-ratio: 1;
  background: radial-gradient(circle, var(--gold-glow) 0%, transparent 62%);
  pointer-events: none;
  z-index: 0;
}

/* Ширину и поля задаёт .shell — своё width: 100% здесь его перебивало бы,
   и заголовок вставал бы вплотную к краю экрана. */
.hero__inner {
  position: relative;
  z-index: 1;
}

.hero__title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: var(--step-5);
  line-height: 0.86;
  letter-spacing: -0.03em;
  margin-block: clamp(1.2rem, 3vw, 2.4rem) clamp(1.6rem, 4vw, 3rem);
}

.hero__title em {
  font-style: italic;
  color: var(--gold-bright);
}

.hero__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: clamp(1.6rem, 4vw, 4rem);
}

.hero__lead {
  max-width: 42ch;
  color: var(--text-dim);
  font-size: var(--step-1);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

.hero__scroll {
  position: absolute;
  inset-block-end: clamp(1.2rem, 3vh, 2.4rem);
  inset-inline-end: 0;
  writing-mode: vertical-rl;
  font-size: var(--step--1);
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--text-faint);
  display: flex;
  align-items: center;
  gap: 1rem;
}

.hero__scroll::after {
  content: '';
  width: 1px;
  height: clamp(38px, 7vh, 76px);
  background: linear-gradient(var(--line-strong), transparent);
  animation: drift 2.4s var(--ease-soft) infinite;
}

@keyframes drift {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ==========================================================================
   Бегущая строка
   ========================================================================== */

.marquee {
  overflow: hidden;
  border-block: var(--rule) solid var(--line);
  padding-block: clamp(0.9rem, 1.8vw, 1.5rem);
  white-space: nowrap;
}

.marquee__track {
  display: inline-flex;
  align-items: center;
  gap: clamp(1.4rem, 3vw, 3.2rem);
  will-change: transform;
}

.marquee__item {
  font-family: var(--font-display);
  font-size: var(--step-2);
  font-weight: 300;
  color: var(--text-dim);
  display: inline-flex;
  align-items: center;
  gap: clamp(1.4rem, 3vw, 3.2rem);
}

.marquee__item::after {
  content: '';
  width: 6px;
  height: 6px;
  rotate: 45deg;
  background: var(--gold);
  flex: none;
}

/* ==========================================================================
   Манифест: липкая колонка
   ========================================================================== */

.duo {
  display: grid;
  gap: clamp(2.4rem, 6vw, 6rem);
  grid-template-columns: 1fr;
  align-items: start;
}

@media (min-width: 60rem) {
  .duo {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }

  .duo__sticky {
    position: sticky;
    top: clamp(6rem, 14vh, 10rem);
  }
}

.duo__body > * + * {
  margin-block-start: 1.2em;
}

.duo__body p {
  font-size: var(--step-1);
  line-height: 1.62;
  color: var(--text-dim);
}

.section--paper .duo__body p {
  color: var(--text-on-paper-dim);
}

.duo__body strong {
  color: var(--text);
  font-weight: 500;
}

.section--paper .duo__body strong {
  color: var(--text-on-paper);
}

/* ==========================================================================
   Два свойства: металлы и цвета
   ========================================================================== */

.axes {
  display: grid;
  gap: clamp(2rem, 5vw, 4.5rem);
}

@media (min-width: 52rem) {
  .axes {
    grid-template-columns: 1fr 1fr;
  }
}

.axis__title {
  font-family: var(--font-display);
  font-size: var(--step-2);
  font-weight: 300;
  margin-block-end: 0.5em;
}

.axis__note {
  color: var(--text-dim);
  max-width: 34ch;
  margin-block-end: 1.8em;
}

.section--paper .axis__note {
  color: var(--text-on-paper-dim);
}

.axis__list {
  display: grid;
  gap: 0;
  list-style: none;
  padding: 0;
  border-block-start: var(--rule) solid var(--line);
}

.section--paper .axis__list,
.section--paper .rule {
  border-color: rgba(20, 20, 26, 0.14);
  background-color: rgba(20, 20, 26, 0.14);
}

.axis__row {
  display: flex;
  align-items: center;
  gap: 1.1rem;
  padding-block: clamp(0.7rem, 1.4vw, 1.05rem);
  border-block-end: var(--rule) solid var(--line);
  transition: padding-inline-start 0.45s var(--ease);
}

.section--paper .axis__row {
  border-color: rgba(20, 20, 26, 0.14);
}

.axis__row:hover {
  padding-inline-start: 0.9rem;
}

.axis__swatch {
  width: clamp(30px, 3.4vw, 44px);
  aspect-ratio: 1;
  border-radius: 50%;
  flex: none;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.3), 0 2px 8px rgba(0, 0, 0, 0.35);
}

.axis__name {
  font-size: var(--step-1);
  flex: 1;
}

.axis__count {
  font-size: var(--step--1);
  color: var(--text-faint);
  letter-spacing: 0.14em;
}

.section--paper .axis__count {
  color: var(--text-on-paper-dim);
}

/* ==========================================================================
   Витрина 25 видов
   ========================================================================== */

.matrix {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: clamp(0.4rem, 1vw, 1rem);
  max-width: 62rem;
}

.matrix .tile {
  width: 100%;
  transition: transform 0.5s var(--ease), box-shadow 0.5s var(--ease);
}

.matrix .tile:hover {
  transform: translateY(-9px) scale(1.04);
  z-index: 2;
}

/* ==========================================================================
   Узоры
   ========================================================================== */

.patterns {
  display: grid;
  gap: clamp(1rem, 2.4vw, 2rem);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 15rem), 1fr));
}

.pattern {
  position: relative;
  padding: clamp(1.3rem, 2.6vw, 2.1rem);
  border: var(--rule) solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-soft);
  overflow: hidden;
  transition: border-color 0.5s var(--ease), transform 0.5s var(--ease);
}

.pattern:hover {
  border-color: var(--gold);
  transform: translateY(-6px);
}

.pattern__points {
  position: absolute;
  inset-block-start: clamp(1.1rem, 2vw, 1.7rem);
  inset-inline-end: clamp(1.1rem, 2vw, 1.7rem);
  font-family: var(--font-display);
  font-size: var(--step-3);
  font-weight: 300;
  line-height: 1;
  color: var(--gold);
}

.pattern__name {
  font-family: var(--font-display);
  font-size: var(--step-2);
  font-weight: 300;
  margin-block-end: 0.35em;
}

.pattern__note {
  color: var(--text-dim);
  font-size: var(--step-0);
  max-width: 26ch;
  min-height: 3.2em;
}

/* Мини-схема узора: настоящая сетка из настоящих плиток. */
.pattern__grid {
  display: grid;
  gap: 3px;
  margin-block-start: clamp(1.2rem, 2.4vw, 1.8rem);
  width: fit-content;
}

.pattern__cell {
  width: clamp(26px, 3.2vw, 40px);
  aspect-ratio: 3 / 4;
}

.pattern__cell--empty {
  border: 1px dashed var(--line);
  border-radius: var(--radius-tile);
  opacity: 0.5;
}

/* ==========================================================================
   Как играть: три шага
   ========================================================================== */

.steps {
  display: grid;
  gap: 0;
  counter-reset: step;
  border-block-start: var(--rule) solid var(--line);
}

.step {
  counter-increment: step;
  display: grid;
  gap: clamp(0.6rem, 2vw, 2.4rem);
  padding-block: clamp(1.8rem, 4vw, 3.4rem);
  border-block-end: var(--rule) solid var(--line);
  align-items: start;
}

@media (min-width: 52rem) {
  .step {
    grid-template-columns: 6rem minmax(0, 1fr) minmax(0, 1.1fr);
  }
}

.step__num {
  font-family: var(--font-display);
  font-size: var(--step-2);
  font-weight: 300;
  color: var(--gold);
}

.step__num::before {
  content: '0' counter(step);
}

.step__title {
  font-family: var(--font-display);
  font-size: var(--step-2);
  font-weight: 300;
  line-height: 1.05;
}

.step__note {
  color: var(--text-dim);
  max-width: 44ch;
}

/* ==========================================================================
   Галерея
   ========================================================================== */

/* Кадр и текст рядом: одна сильная фотография работает лучше, чем сетка
   из трёх средних. */
.thing {
  display: grid;
  gap: clamp(1.6rem, 4vw, 4rem);
  align-items: center;
}

@media (min-width: 56rem) {
  .thing {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  }
}

.thing__shot {
  aspect-ratio: 4 / 5;
}

.thing__body > * + * {
  margin-block-start: 1.2em;
}

.thing__body p {
  font-size: var(--step-1);
  line-height: 1.62;
  color: var(--text-dim);
  max-width: 44ch;
}

.thing__body strong {
  color: var(--text);
  font-weight: 500;
}

.gallery {
  display: grid;
  gap: clamp(0.6rem, 1.6vw, 1.4rem);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 17rem), 1fr));
}

.shot {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--ink-raised);
  aspect-ratio: 4 / 5;
}

.shot--wide {
  aspect-ratio: 16 / 10;
  grid-column: span 2;
}

@media (max-width: 40rem) {
  .shot--wide {
    grid-column: span 1;
  }
}

.shot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 1.1s var(--ease), filter 0.7s var(--ease);
}

.shot:hover img {
  transform: scale(1.05);
}

/* Заглушка на время, пока настоящих фотографий нет. */
.shot__placeholder {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  gap: 0.6rem;
  text-align: center;
  padding: 1.4rem;
  background:
    repeating-linear-gradient(45deg, rgba(201, 162, 39, 0.05) 0 10px, transparent 10px 20px),
    var(--ink-raised);
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  color: var(--text-faint);
  font-size: var(--step--1);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.shot__caption {
  position: absolute;
  inset-block-end: 0;
  inset-inline: 0;
  padding: clamp(0.8rem, 2vw, 1.4rem);
  background: linear-gradient(transparent, rgba(8, 8, 10, 0.86));
  font-size: var(--step--1);
  color: var(--text-dim);
  translate: 0 100%;
  transition: translate 0.6s var(--ease);
}

.shot:hover .shot__caption {
  translate: 0 0;
}

/* Полосатая полноэкранная врезка с параллаксом. */
.plate {
  position: relative;
  height: clamp(24rem, 62vh, 44rem);
  overflow: hidden;
  border-radius: var(--radius);
}

.plate__media {
  position: absolute;
  inset: -14% 0;
  width: 100%;
  height: 128%;
  object-fit: cover;
  will-change: transform;
}

.plate__body {
  position: absolute;
  inset-block-end: 0;
  inset-inline: 0;
  padding: clamp(1.6rem, 4vw, 3.4rem);
  background: linear-gradient(transparent, rgba(8, 8, 10, 0.9));
}

.plate__title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: var(--step-3);
  line-height: 1;
  max-width: 18ch;
}

/* ==========================================================================
   Приглашение сыграть
   ========================================================================== */

.play-cta {
  display: grid;
  gap: clamp(1.6rem, 4vw, 3.2rem);
  align-items: center;
  padding: clamp(1.8rem, 5vw, 4.2rem);
  border: var(--rule) solid var(--line);
  border-radius: var(--radius);
  background:
    radial-gradient(120% 140% at 50% 0%, rgba(201, 162, 39, 0.1), transparent 60%),
    var(--ink-soft);
}

@media (min-width: 56rem) {
  .play-cta {
    grid-template-columns: 1.2fr 1fr;
  }
}

.play-cta__title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: var(--step-3);
  line-height: 0.98;
  margin-block-end: 0.5em;
}

.play-cta__note {
  color: var(--text-dim);
  max-width: 40ch;
}

.join {
  display: grid;
  gap: 0.8rem;
}

.join__row {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.field {
  flex: 1 1 8rem;
  padding: 1.05em 1.3em;
  background: transparent;
  border: var(--rule) solid var(--line-strong);
  border-radius: 999px;
  color: var(--text);
  font-size: var(--step--1);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  transition: border-color 0.4s var(--ease);
}

.field::placeholder {
  color: var(--text-faint);
  letter-spacing: 0.14em;
}

.field:focus {
  border-color: var(--gold);
  outline: none;
}

/* ==========================================================================
   Подвал
   ========================================================================== */

.footer {
  padding-block: clamp(3rem, 8vw, 7rem) clamp(1.6rem, 3vw, 2.6rem);
  border-block-start: var(--rule) solid var(--line);
}

.footer__mark {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: var(--step-4);
  line-height: 0.9;
  letter-spacing: -0.03em;
  margin-block-end: clamp(1.6rem, 4vw, 3rem);
}

.footer__grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1.4rem;
  align-items: end;
  color: var(--text-faint);
  font-size: var(--step--1);
}

.footer__links {
  display: flex;
  gap: 1.6rem;
  list-style: none;
  padding: 0;
}
