/* ==========================================================================
   COGO4KA — дизайн и создание сайтов с нуля
   Чёрно-белая тема. Шрифт: Rubik Wet Paint.
   ========================================================================== */

/* ---------- Шрифт Rubik Wet Paint (одно начертание, покрывает и кириллицу) ---------- */
@font-face {
  font-family: 'Rubik Wet Paint';
  src: url('../fonts/RubikWetPaint-Regular.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

/* ---------- Переменные и база ---------- */
:root {
  --ink: #000000;
  --paper: #ffffff;
  --font-display: 'Rubik Wet Paint', 'Arial', sans-serif;
  --container: 1240px;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --header-h: 76px;
  --ease-out: cubic-bezier(.22, .61, .36, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  overflow-x: clip;
}

body {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  line-height: 1.6;
  background: var(--ink);
  color: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

::selection { background: var(--ink); color: var(--paper); }
.section--dark ::selection,
.footer ::selection { background: var(--paper); color: var(--ink); }

:focus-visible {
  outline: 2px dashed currentColor;
  outline-offset: 3px;
}

::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--paper); }
::-webkit-scrollbar-thumb { background: var(--ink); border: 2px solid var(--paper); }

.container {
  width: min(var(--container), 100% - var(--gutter) * 2);
  margin-inline: auto;
}

section[id] {
  scroll-margin-top: calc(var(--header-h) + 8px);
}

/* ---------- Индикатор прогресса чтения ---------- */
.progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: #fff;
  mix-blend-mode: difference;
  transform: scaleX(0);
  transform-origin: 0 50%;
  pointer-events: none;
  z-index: 1002;
}

/* ---------- Кнопка «наверх» ---------- */
.to-top {
  visibility: hidden;
  position: fixed;
  right: 22px;
  bottom: 22px;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 1px solid #fff;
  background: transparent;
  color: #fff;
  mix-blend-mode: difference;
  font-size: 1.2rem;
  line-height: 1;
  display: grid;
  place-items: center;
  opacity: 0;
  transform: translateY(16px) scale(.8);
  pointer-events: none;
  z-index: 1001;
  transition: opacity .35s ease, transform .35s var(--ease-out),
              background-color .3s ease, color .3s ease;
}

.to-top.visible {
  visibility: visible;
  opacity: 1;
  transform: none;
  pointer-events: auto;
}

.to-top:hover {
  background: #fff;
  color: #000;
}

.to-top:active { transform: scale(.9); }

/* ---------- Кнопки ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .6em;
  padding: 1rem 2rem;
  border: 1px solid var(--ink);
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .16em;
  text-transform: uppercase;
  transition: background-color .3s var(--ease-out), color .3s var(--ease-out),
              border-color .3s var(--ease-out), transform .2s var(--ease-out),
              letter-spacing .35s var(--ease-out);
}

.btn:hover {
  letter-spacing: .24em;
  transform: translateY(-2px);
}

.btn:active { transform: scale(.97); }

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

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

.btn--ghost {
  background: transparent;
  color: var(--ink);
}

.btn--ghost:hover {
  background: var(--ink);
  color: var(--paper);
}

.section--dark .btn--solid,
.hero .btn--solid,
.header .btn--solid,
.footer .btn--solid {
  background: var(--paper);
  border-color: var(--paper);
  color: var(--ink);
}

.section--dark .btn--solid:hover,
.hero .btn--solid:hover,
.header .btn--solid:hover,
.footer .btn--solid:hover {
  background: transparent;
  color: var(--paper);
}

.section--dark .btn--ghost,
.hero .btn--ghost,
.footer .btn--ghost {
  border-color: var(--paper);
  color: var(--paper);
}

.section--dark .btn--ghost:hover,
.hero .btn--ghost:hover,
.footer .btn--ghost:hover {
  background: var(--paper);
  color: var(--ink);
}

/* ---------- Типографика секций ---------- */
.eyebrow {
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .28em;
  text-transform: uppercase;
  opacity: .65;
  margin-bottom: 1.1rem;
}

/* Линия-штрих вырастает при появлении */
.eyebrow::after {
  content: '';
  display: block;
  width: 44px;
  height: 1px;
  background: currentColor;
  margin-top: .8rem;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .9s var(--ease-out) .35s;
}

.eyebrow.visible::after {
  transform: scaleX(1);
}

.section__title {
  font-size: clamp(2.1rem, 4.6vw, 3.9rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -.01em;
}

/* Пословное появление заголовков секций */
.section__title .w {
  display: inline-block;
  overflow: hidden;
  vertical-align: bottom;
  padding-bottom: .14em;
  margin-bottom: -.14em;
}

.section__title .w__in {
  display: inline-block;
  transform: translateY(115%);
  transition: transform .75s var(--ease-out);
  transition-delay: var(--d, 0s);
}

.section__title.visible .w__in {
  transform: translateY(0);
  animation: word-wobble .7s var(--ease-out) both;
  animation-delay: calc(var(--d, 0s) + .85s);
}

.accent {
  font-style: italic;
  font-weight: 500;
}

/* Rubik Wet Paint — одно начертание: без синтетического курсива */
em, i, .accent, .work__type, .footer__copy, .hero__badge-text {
  font-style: normal;
}

/* ---------- Секции: светлая и тёмная темы ---------- */
.section {
  padding: clamp(4.5rem, 9vw, 8.5rem) 0;
}

.section--light {
  background-color: var(--paper);
  color: var(--ink);
  background-image: radial-gradient(rgba(0, 0, 0, .16) 1.3px, transparent 1.9px);
  background-size: 22px 22px;
}

.section--dark {
  background-color: var(--ink);
  color: var(--paper);
  background-image: radial-gradient(rgba(255, 255, 255, .18) 1.3px, transparent 1.9px);
  background-size: 22px 22px;
}

.section__head {
  display: flex;
  flex-direction: column;
  gap: .4rem;
  margin-bottom: clamp(2.5rem, 5vw, 4.5rem);
}

/* ---------- Шапка ---------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  color: var(--paper);
  transition: background-color .35s ease, box-shadow .35s ease,
              transform .45s var(--ease-out);
}

.header--scrolled {
  background: rgba(0, 0, 0, .88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(255, 255, 255, .14);
}

.header--hidden {
  transform: translateY(-100%);
}

body.menu-open .header {
  transform: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  transition: none;
}

body.menu-open { overflow: hidden; }
body.menu-open .to-top { visibility: hidden; }

.header:focus-within { transform: none; }

.header__inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.logo {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: .06em;
  white-space: nowrap;
}

.logo__star {
  display: inline-block;
  font-size: .85em;
  margin-right: .15em;
  animation: star-spin 14s linear infinite;
}

.logo:hover .logo__star { animation-duration: 2.5s; }

@keyframes star-spin {
  to { transform: rotate(360deg); }
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(1.2rem, 2.5vw, 2.2rem);
}

.nav__link {
  font-size: .8rem;
  font-weight: 500;
  letter-spacing: .14em;
  text-transform: uppercase;
  position: relative;
  padding: .4em 0;
}

.nav__link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .35s var(--ease-out);
}

.nav__link:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav__cta {
  padding: .7rem 1.4rem;
  font-size: .72rem;
}

.burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 7px;
  width: 44px;
  height: 44px;
  align-items: center;
}

.burger__line {
  width: 26px;
  height: 2px;
  background: currentColor;
  transition: transform .35s var(--ease-out), opacity .25s ease;
}

body.menu-open .burger__line:first-child { transform: translateY(4.5px) rotate(45deg); }
body.menu-open .burger__line:last-child { transform: translateY(-4.5px) rotate(-45deg); }

/* ---------- Первый экран ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding-top: calc(var(--header-h) + clamp(2rem, 6vh, 5rem));
  background-color: var(--ink);
  background-image: radial-gradient(rgba(255, 255, 255, .18) 1.3px, transparent 1.9px);
  background-size: 22px 22px;
  color: var(--paper);
  overflow: hidden;
}

.hero__stage {
  display: flex;
  flex-direction: column;
  flex: 1;
  position: relative;
  z-index: 1;
  overflow: hidden;
  overflow: clip;
}

.hero__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-items: center;
  gap: 2rem;
  flex: 1;
  padding-block: 2rem 3rem;
  position: relative;
  z-index: 1;
}

.hero__title {
  font-size: clamp(2.7rem, 8vw, 7rem);
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -.015em;
  text-transform: uppercase;
  display: flex;
  flex-direction: column;
  margin: .4rem 0 1.6rem;
  /* Стикер-обводка: предмет за текстом визуально уходит в чёрное,
     а буквы остаются белыми и читаемыми */
  -webkit-text-stroke: .05em #000;
  paint-order: stroke fill;
  text-shadow: 0 0 .3em rgba(0, 0, 0, .55);
}

.hero__title em {
  font-weight: 500;
  letter-spacing: 0;
}

/* Построчное появление заголовка из масок */
.line {
  display: block;
  overflow: hidden;
  padding-block: .06em .14em;
  margin-block: -.06em -.14em;
}

.line__inner {
  display: block;
  transform: translateY(112%);
  animation: line-up 1s var(--ease-out) forwards,
             word-wobble .7s var(--ease-out) 1.9s both;
  animation-delay: calc(var(--d, 0s) + .2s), calc(var(--d, 0s) + 1.9s);
}

@keyframes line-up {
  to { transform: translateY(0); }
}

/* Лёгкое потряхивание слов заголовков */
@keyframes word-wobble {
  0% { transform: translateY(0) rotate(0deg); }
  25% { transform: translateY(.06em) rotate(-1.6deg); }
  50% { transform: translateY(-.05em) rotate(1.3deg); }
  75% { transform: translateY(.03em) rotate(-.7deg); }
  100% { transform: translateY(0) rotate(0deg); }
}

.hero__lead {
  max-width: 34em;
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  line-height: 1.65;
  opacity: .85;
  margin-bottom: 2.4rem;
  text-shadow: 0 0 .6em rgba(0, 0, 0, .9), 0 0 .2em rgba(0, 0, 0, .7);
}

.hero .eyebrow {
  text-shadow: 0 0 .6em rgba(0, 0, 0, .9);
}

.hero .btn {
  box-shadow: 0 0 0 1px rgba(0, 0, 0, .65), 0 .6em 1.8em rgba(0, 0, 0, .4);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

/* Гигантский предмет за текстом: белый, без инверсии —
   читаемость даёт чёрная обводка букв заголовка */
.hero__backdrop {
  position: absolute;
  top: 50%;
  right: -6%;
  width: min(62vw, 680px);
  aspect-ratio: 1;
  transform: translateY(-50%) translateY(var(--sy, 0px));
  z-index: 0;
  pointer-events: none;
}

.hero__backdrop-inner {
  width: 100%;
  height: 100%;
  animation: backdrop-spin 50s linear infinite;
}

@keyframes backdrop-spin {
  from { transform: rotate(0deg) scale(1); }
  50% { transform: rotate(180deg) scale(1.07); }
  to { transform: rotate(360deg) scale(1); }
}

/* ---------- Бегущая строка ---------- */
.marquee {
  position: relative;
  z-index: 2;
  flex-shrink: 0;
  background: var(--paper);
  color: var(--ink);
  border-block: 1px solid var(--ink);
  overflow: hidden;
  padding-block: .9rem;
}

.marquee__track {
  display: flex;
  align-items: center;
  width: max-content;
  animation: marquee 30s linear infinite;
}

.marquee:hover .marquee__track { animation-play-state: paused; }

.marquee__item,
.marquee__sep {
  padding-inline: 1.25rem;
  white-space: nowrap;
}

.marquee__item {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: .22em;
  text-transform: uppercase;
  white-space: nowrap;
}

.marquee__sep {
  font-size: 1rem;
  display: inline-block;
  animation: star-spin 7s linear infinite;
}

@keyframes marquee {
  to { transform: translateX(-50%); }
}

/* ---------- Работы ---------- */
.works {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1.2rem, 2.5vw, 2rem);
}

.work {
  display: block;
  transition: transform .5s var(--ease-out);
  transform-style: preserve-3d;
}

.work__art {
  aspect-ratio: 4 / 3;
  background-color: var(--paper);
  color: var(--ink);
  border: 1px solid var(--ink);
  display: grid;
  place-items: center;
  overflow: hidden;
  position: relative;
  transition: color .4s var(--ease-out), background-color .4s var(--ease-out),
              transform .4s var(--ease-out);
}

.work__art > span {
  font-size: clamp(3.2rem, 6vw, 5rem);
  font-weight: 700;
  transition: transform .5s var(--ease-out);
}

.work:hover .work__art {
  background: var(--ink);
  color: var(--paper);
  transform: translateY(-6px);
}

.work:hover .work__art > span { transform: scale(1.12); }

.work__art--rings {
  background-image: repeating-radial-gradient(circle at 50% 50%, currentColor 0 2px, transparent 2px 20px);
}

.work__art--stripes {
  background-image: repeating-linear-gradient(45deg, currentColor 0 3px, transparent 3px 15px);
}

.work__art--letter { background-color: var(--paper); }
.work__art--letter > span { font-size: clamp(5rem, 10vw, 8.5rem); font-style: italic; }

.work__art--checker {
  background-image: conic-gradient(currentColor 0 25%, transparent 0 50%, currentColor 0 75%, transparent 0);
  background-size: 22px 22px;
}

.work__art--dots {
  background-image: radial-gradient(currentColor 2px, transparent 2.6px);
  background-size: 17px 17px;
}

.work__art--wave {
  background-image: repeating-radial-gradient(circle at 50% 130%, currentColor 0 2px, transparent 2px 22px);
}

/* Дрейф паттернов при наведении */
@keyframes tile-drift-diag { to { background-position: 21.2px 21.2px; } }
@keyframes tile-drift-grid { to { background-position: 26px 26px; } }
@keyframes tile-drift-dots { to { background-position: 17px 17px; } }

.work:hover .work__art--stripes { animation: tile-drift-diag .8s linear infinite; }
.work:hover .work__art--checker { animation: tile-drift-grid 1.1s linear infinite; }
.work:hover .work__art--dots { animation: tile-drift-dots 1.4s linear infinite; }

.work__art > span {
  background: inherit;
}

.work__meta {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: baseline;
  gap: .2rem .8rem;
  padding-top: 1rem;
}

.work__name {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: .04em;
  transition: letter-spacing .4s var(--ease-out);
}

.work:hover .work__name {
  letter-spacing: .14em;
}

.work__type {
  grid-column: 1 / -1;
  grid-row: 2;
  font-size: .92rem;
  opacity: .7;
  font-style: italic;
}

.work__year {
  grid-column: 2;
  grid-row: 1;
  font-size: .8rem;
  letter-spacing: .14em;
  opacity: .5;
}

/* ---------- Процесс ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  counter-reset: step;
}

.step {
  border-left: 1px solid rgba(255, 255, 255, .25);
  padding: .4rem 1.4rem 0;
  display: flex;
  flex-direction: column;
  gap: .7rem;
  min-height: 100%;
  transition: transform .35s var(--ease-out), border-color .35s ease;
}

.step:hover {
  transform: translateY(-6px);
  border-left-color: var(--paper);
}

.step__num {
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1;
  opacity: .9;
  display: inline-block;
  transition: transform .35s var(--ease-out);
}

.step:hover .step__num {
  transform: scale(1.12) rotate(-3deg);
}

/* Шаги выезжают с боков попеременно */
.reveal-ready .step.reveal:nth-child(odd) { transform: translateX(-48px); }
.reveal-ready .step.reveal:nth-child(even) { transform: translateX(48px); }
.reveal-ready .step.reveal.visible { transform: none; }
.reveal-ready .step.reveal.visible:hover { transform: translateY(-6px); }

.step__name {
  font-size: 1.12rem;
  font-weight: 700;
  line-height: 1.25;
}

.step__desc {
  font-size: .92rem;
  line-height: 1.55;
  opacity: .75;
  flex: 1;
}

.step__time {
  font-size: .75rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  opacity: .55;
  border-top: 1px solid rgba(255, 255, 255, .25);
  padding-top: .8rem;
  margin-top: .8rem;
}

/* ---------- Контакты ---------- */
.contact__layout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(2.5rem, 6vw, 5.5rem);
  align-items: start;
}

.contact__lead {
  margin-top: 1.4rem;
  font-size: 1.05rem;
  opacity: .8;
  max-width: 26em;
}

.contact__list {
  margin-top: 2.4rem;
  border-top: 1px solid rgba(0, 0, 0, .25);
}

.contact__row {
  display: grid;
  grid-template-columns: minmax(70px, 100px) minmax(0, 1fr);
  align-items: baseline;
  gap: 1rem;
  padding: 1.1rem .2rem;
  border-bottom: 1px solid rgba(0, 0, 0, .25);
}

.contact__key {
  font-size: .75rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  opacity: .55;
}

.contact__value {
  overflow-wrap: anywhere;
  min-width: 0;
  max-width: 100%;
  font-size: clamp(1.05rem, 1.8vw, 1.35rem);
  font-weight: 600;
  position: relative;
  width: fit-content;
  transition: opacity .25s ease;
}

.contact__value::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .4s var(--ease-out);
}

.contact__value:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.contact__value:hover { opacity: .75; }

/* ---------- Форма ---------- */
.form {
  display: flex;
  flex-direction: column;
  gap: 1.6rem;
  border: 1px solid var(--ink);
  padding: clamp(1.6rem, 3.5vw, 2.8rem);
  position: relative;
}

.field {
  display: flex;
  flex-direction: column;
  gap: .45rem;
}

.field__label {
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .18em;
  text-transform: uppercase;
  opacity: .6;
}

.field__input {
  min-width: 0;
  width: 100%;
  font: inherit;
  font-size: 1.05rem;
  color: var(--ink);
  background: transparent;
  border: 0;
  border-bottom: 1px solid rgba(0, 0, 0, .35);
  padding: .55rem .35rem;
  border-radius: 0;
  transition: border-color .3s ease, background-color .35s ease;
}

.field__input::placeholder { color: #707070; }

.field__input:focus {
  outline: 2px solid var(--ink);
  outline-offset: 3px;
  border-bottom-color: var(--ink);
  background: rgba(0, 0, 0, .04);
}

.field__input--area { resize: vertical; min-height: 96px; }

.form__btn { margin-top: .4rem; }

.form__hint {
  font-size: .78rem;
  color: #595959;
  line-height: 1.5;
}

.field__error {
  font-size: .875rem;
  line-height: 1.5;
}

.field__input[aria-invalid="true"] { border-bottom: 2px solid var(--ink); }

.form__draft {
  display: flex;
  flex-direction: column;
  gap: .8rem;
  border-top: 1px solid var(--ink);
  padding-top: 1rem;
  font-size: .875rem;
  overflow-wrap: anywhere;
}

.form__draft[hidden], .field__error[hidden], #formStatus:empty { display: none; }

/* ---------- Подвал ---------- */
.footer {
  background-color: var(--ink);
  background-image: radial-gradient(rgba(255, 255, 255, .18) 1.3px, transparent 1.9px);
  background-size: 22px 22px;
  color: var(--paper);
  padding: clamp(3rem, 7vw, 5.5rem) 0 2rem;
}

.footer__top {
  border-bottom: 1px solid rgba(255, 255, 255, .2);
  padding-bottom: clamp(1.5rem, 4vw, 3rem);
  margin-bottom: 2rem;
  overflow: hidden;
}

.footer__wordmark {
  display: block;
  text-align: center;
  font-size: clamp(3rem, 13vw, 10.5rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: .04em;
  color: var(--paper);
  white-space: nowrap;
  transition: color .5s var(--ease-out), letter-spacing 1s var(--ease-out),
              opacity .8s ease, transform .8s var(--ease-out), filter .8s ease;
}

/* Появление вордмарка: широкое разрежение схлопывается к норме */
.reveal-ready .footer__wordmark.reveal {
  letter-spacing: .3em;
  transition: color .5s var(--ease-out), letter-spacing 1s var(--ease-out),
              opacity .8s ease, transform .8s var(--ease-out), filter .8s ease;
}

.reveal-ready .footer__wordmark.reveal.visible {
  letter-spacing: .04em;
  transition-delay: 0s;
}

@supports (-webkit-text-stroke: 1px #fff) {
  .footer__wordmark {
    color: transparent;
    -webkit-text-stroke: 1.5px var(--paper);
  }
}

.footer__wordmark:hover { color: var(--paper); }

.footer__bottom {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}

.footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.4rem;
}

.footer__nav a {
  font-size: .78rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  opacity: .7;
  transition: opacity .25s ease;
}

.footer__nav a:hover { opacity: 1; }

.footer__copy {
  font-size: .85rem;
  font-style: italic;
  opacity: .6;
  line-height: 1.6;
}

.footer__up {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  font-size: .78rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  opacity: .7;
  transition: opacity .25s ease, transform .25s var(--ease-out);
}

.footer__up:hover { opacity: 1; transform: translateY(-3px); }

.footer__up > span:first-child { font-size: 1.1rem; }

/* ---------- Появление при скролле ---------- */
.reveal-ready .reveal {
  opacity: 0;
  transform: translateY(26px);
  filter: blur(6px);
  transition: opacity .8s ease, transform .8s var(--ease-out), filter .8s ease;
  transition-delay: var(--d, 0s);
}

.reveal-ready .reveal.visible {
  opacity: 1;
  transform: none;
  filter: blur(0);
}

/* Направленные появления */
.reveal-ready .reveal--left { transform: translateX(-52px); }
.reveal-ready .reveal--right { transform: translateX(52px); }

.reveal-ready .reveal--left.visible,
.reveal-ready .reveal--right.visible { transform: none; }

/* Карточки работ влетают с лёгким поворотом */
.reveal-ready .work.reveal { transform: translateY(30px) rotate(-2deg); }
.reveal-ready .work.reveal.visible { transform: none; }

/* ---------- Адаптив ---------- */
@media (max-width: 1024px) {
  .works { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); row-gap: 2.2rem; }
  .step:nth-child(odd) { border-left: 0; padding-left: 0; }
}

@media (max-width: 820px) {
  .nav {
    position: fixed;
    inset: 0;
    height: 100vh;
    height: 100dvh;
    padding: calc(var(--header-h) + 1rem) var(--gutter) 2rem;
    overflow-y: auto;
    visibility: hidden;
    pointer-events: none;
    background: var(--ink);
    color: var(--paper);
    flex-direction: column;
    justify-content: center;
    gap: 2rem;
    clip-path: inset(0 0 100% 0);
    transition: clip-path .55s var(--ease-out);
  }

  body.menu-open .nav {
    clip-path: inset(0 0 0 0);
    visibility: visible;
    pointer-events: auto;
  }

  .nav__link { font-size: 1.4rem; }

  /* Каскадное появление пунктов меню */
  .nav > a {
    opacity: 0;
    transform: translateY(22px);
    transition: opacity .4s ease, transform .55s var(--ease-out);
  }

  body.menu-open .nav > a {
    opacity: 1;
    transform: none;
    transition-delay: calc(var(--i, 0) * .06s + .18s);
  }

  .burger { display: flex; z-index: 1001; position: relative; }

  html:not(.menu-ready) .header { position: relative; }
  html:not(.menu-ready) .header__inner { height: auto; min-height: var(--header-h); flex-wrap: wrap; padding-block: 1rem; }
  html:not(.menu-ready) .nav { position: static; height: auto; padding: 0; flex-direction: row; flex-wrap: wrap; visibility: visible; pointer-events: auto; clip-path: none; gap: 1rem; }
  html:not(.menu-ready) .nav > a { opacity: 1; transform: none; font-size: .8rem; }
  html:not(.menu-ready) .burger { display: none; }

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

  .hero__backdrop {
    right: -22%;
    top: 42%;
    width: min(92vw, 560px);
  }

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

  .footer__bottom { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 560px) {
  body { font-size: 1rem; }

  .hero__actions .btn { width: 100%; }

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

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

  .step { border-left: 0; padding-left: 0; }

  .contact__row { grid-template-columns: 1fr; gap: .2rem; }
}

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

  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-delay: 0s !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    transition-delay: 0s !important;
  }

  .reveal-ready .reveal,
  .reveal-ready .step.reveal,
  .reveal-ready .work.reveal,
  .hero__layout,
  .line__inner,
  .section__title .w__in {
    opacity: 1;
    transform: none !important;
    filter: none;
    animation: none;
  }

  .hero__backdrop { --sy: 0px !important; }
}