html {
  box-sizing: border-box;
}

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

img {
  max-width: 100%;
}

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

@font-face {
  font-family: 'Muller';
  src: url('../fonts/MullerRegular.woff2'),
    url('../fonts/MullerRegular.woff');
  font-display: swap;
  font-weight: 400;
}

@font-face {
  font-family: 'Muller';
  src: url('../fonts/MullerBold.woff2'),
    url('../fonts/MullerBold.woff');
  font-display: swap;
  font-weight: 700;
}

@font-face {
  font-family: 'Russo';
  src: url('../fonts/RussoOne-Regular.woff2'),
    url('../fonts/RussoOne-Regular.woff');
  font-display: swap;
  font-weight: 400;
}

:root {
  --color-light: #fff;
  --color-dark: #07060b;
  --color-primary: #46f4db;
  --color-primary-active: #57d272;
  --color-red: #d13130;
  --color-athens: #ededf2;
  --color-manatee: #95959d;
  --gap: 32px;
}

body {
  min-width: 320px;
  font-family: 'Muller', sans-serif;
  font-size: 20px;
  color: var(--color-dark);
}

.list-reset {
  padding: 0;
  margin: 0;
  list-style: none;
}

/* обнулить стили кнопки "Кошелёк" */
.btn-reset {
  border: none;
  padding: 0;
  background-color: transparent;
  cursor: pointer;
}

.container {
  margin: 0 auto;
  padding: 0 12px;
  max-width: 1304px; /*1280 + 12 + 12 = 1304*/
}

.title {
  margin: 0;
  font-family: 'Russo', sans-serif;
  font-size: 60px;
  line-height: 72px;
  display: flex;
  color: var(--color-dark);
}

.second-title {
  margin: 0;
  font-family: 'Russo', sans-serif;
  font-size: 20px;
  line-height: 24px;
  color: var(--color-dark);
}

.btn {
  position: relative;
  outline: none;
  border: none;
  padding: 0;
  border-radius: 100px;
  padding: 25px 74px;
  font-weight: 700;
  font-size: 20px;
  line-height: 20px;
  text-align: center;
  color: #07060B;
  background-color: transparent;
  cursor: pointer;
  transition: background-color 0.3s ease-in-out, border-color 0.3s ease-in-out;
}

.btn::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  border-radius: inherit;
  background: linear-gradient(180deg, #46F4DB 27.08%, #57D272 100%);
  opacity: 0;
  transition: opacity 0.3s ease-in-out;
  pointer-events: none;
}

.btn::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  border-radius: inherit;
  background-color: var(--color-primary-active);
  opacity: 0;
  transition: opacity 0.3s ease-in-out;
  pointer-events: none;
}

.btn__text {
  position: relative;
  z-index: 5;
}

.btn--fill {
  background-color: var(--color-primary);
}

.btn--fill:focus::before {
  opacity: 1;
}

.btn--fill:hover::before {
  opacity: 1;
}

.btn--stroke {
  border: 5px solid var(--color-primary);
}

.btn--stroke:focus {
  border-color: var(--color-primary);
  background-color: var(--color-primary);
}

.btn--stroke:hover {
  border-color: var(--color-primary);
  background-color: var(--color-primary);
}

.btn:active::after {
  opacity: 1;
}

.btn--stroke:active {
  border-color: var(--color-primary-active);
}

.form-input {
  border: none;
  border-radius: 40px;
  padding-left: var(--gap);
  width: 100%;
  height: 70px;
  font-size: 20px;
  line-height: 20px;
}

/* header */
.header {
  padding: 15px 0;
  background-color: var(--color-light);
}

.header__container {
  display: flex;
  align-items: center;
}

.header__logo {
  margin-right: calc(var(--gap) * 2);
}

.header__nav {
  margin-right: auto;
}

.nav__list {
  display: flex;
  align-items: center;
}

.nav__item:not(:last-child) {
  margin-right: var(--gap);
}

/* реакция верхнего меню на focus hover active*/

.nav__link {
  font-weight: 700;
  transition: color 0.3s ease-in-out;
}

.nav__link:focus {
  outline: 2px solid var(--color-primary-active);
  outline-offset: 6px;
}

.nav__link:hover {
  color: var(--color-primary);
}

.nav__link:active {
  color: var(--color-primary-active);
}

/* кнопка Кошелёк */
.header__btn {
  outline: none;
  position: relative;
  border-radius: 100px;
  padding: 17px 32px;
  font-weight: 700;
  font-size: 16px;
  line-height: 16px;
  color: var(--color-light);
  background-color: var(--color-dark);
  transition: color 0.3s ease-in-out, background-color 0.3s ease-in-out;
}

.header__btn::after {
  content: "";
  position: absolute;
  left: -6px;
  top: -6px;
  border: 2px solid var(--color-primary-active);
  border-radius: 100px;
  width: calc(100% + 12px);
  height: calc(100% + 12px);
  opacity: 0;
}

.header__btn:focus::after {
  opacity: 1;
}

.header__btn:hover {
  color: var(--color-dark);
  background-color: var(--color-primary);
}

.header__btn:active {
  color: var(--color-dark);
  background-color: var(--color-primary-active);
}

/* hero */
.hero {
  height: 680px;
  background-color: var(--color-dark);
  background-image: url("../img/hero-bg.png");
  background-repeat: no-repeat;
  background-position: calc(100% + 9px) top; /*подгон под пиксель-перфект*/
}

.hero__container {
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero__title {
  margin: 0;
  margin-bottom: 36px;
  font-family: 'Russo', sans-serif;
  font-size: 70px;
  line-height: 84px;
  color: var(--color-light);
}

.hero__text {
  width: 50%;
}

.hero__buttons {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
}

.hero__btn { /*общий стиль обеих кнопок*/
  position: relative;
  outline: none;
  display: inline-block;
  border-radius: 100px;
  padding: 25px 54px;
  font-weight: 700;
  font-size: 20px;
  line-height: 20px;
  color: var(--color-dark);
  background: linear-gradient(180deg, #46F4DB 27.08%, #57D272 100%);
}

.hero__btn--fill {
  margin-right: var(--gap);
}

.hero__btn--stroke {
  padding: 5px; /*толщина окантовки кнопки "Стать автором"*/
}

.hero__btn-text {
  position: relative;
  z-index: 5; /*текст кнопки не исчезнет при :active*/
}

.hero__btn--stroke .hero__btn-text { /*черный фон кнопки "Стать автором"*/
  border-radius: inherit;
  padding: 20px 49px;
  display: inline-block;
  color: var(--color-light);
  background-color: var(--color-dark);
  transition: color 0.3s ease-in-out, background-color 0.3s ease-in-out;
}

.hero__btn::before { /*для :hover (будет исчезать градиент)*/
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  border-radius: inherit;
  background-color: var(--color-primary);
  opacity: 0; /*ровный цвет не виден*/
  transition: opacity 0.3s ease-in-out;
}

.hero__btn::after { /*для стиля при :active (измен. фона)*/
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  border-radius: inherit;
  background-color: var(--color-primary-active);
  opacity: 0;
  transition: opacity 0.3s ease-in-out;
}

.hero__btn:focus .hero__btn-text {
  color: var(--color-dark);/*текст кнопки при :focus*/
  background-color: transparent; /*цвет фона прозрачный при :focus*/
}

.hero__btn:focus::before {
  opacity: 1; /*вместо градиента проявится ровный фон*/
}

.hero__btn--fill:hover .hero__btn-text {
  color: var(--color-dark);
  background-color: transparent;
}

.hero__btn--fill:hover::before {
  opacity: 1; /* при :hover ( исчез градиент-> фон ровный)*/
}

.hero__btn--stroke:hover .hero__btn-text {
  color: var(--color-dark); /*текст кнопки при :hover*/
  background-color: transparent; /*черный фон текста - исчезает*/
}

.hero__btn:active .hero__btn-text {
  color: var(--color-dark); /*текст при :active*/
  background-color: transparent; /*цвет фона прозрачный при :active*/
}

.hero__btn:active::after {
  opacity: 1; /*проявление фона в момент клика в кнопку*/
}

/* auction-bet */
.auction-bet-section {
  padding-top: 90px;
  padding-bottom: 40px;
}

.auction-bet-section__state {
  display: inline-flex;
  align-items: center;
  border: 2px solid currentColor;
  border-radius: 100px;
  padding: 8px 15px;
  padding-left: 13px;
  font-family: 'Muller', sans-serif;
  font-weight: 700;
  font-size: 16px;
  line-height: 16px;
  color: var(--color-red);
  transform: translateX(16px);
}

.auction-bet-section__state::before {
  content: "";
  border-radius: 100%;
  margin-right: 7px;
  width: 6px;
  height: 6px;
  background-color: currentColor;
}

.auction-bet-section__title {
  display: inline-flex;
  align-items: center;
  margin-bottom: var(--gap);
}

.auction-bet-section__content {
  display: flex;
}

.auction-bet-section__image {
  margin-right: var(--gap);
  min-width: 460px;
}

.auction-bet-section__image img{
border-radius: 50%;
}

.auction-bet-section__info {
  width: calc(100% - 460px - var(--gap));
}

.auction-owner {
  display: inline-flex;
  align-items: center;
}

.auction-owner__nickname {
  font-weight: 700;
  font-size: 16px;
  line-height: 16px;
}

.auction-bet-section__owner {
  margin-bottom: 34px;
  border-radius: 23px;
  padding: 11px 16px;
  background-color: var(--color-athens);
}

.auction-owner__avatar {
  overflow: hidden;
  border-radius: 100%;
  margin-right: 8px;
}

.auction-bet-section__owner .auction-owner__nickname {
  font-size: 20px;
  line-height: 20px;
}

.auction-bet-section__owner .auction-owner__avatar {
  margin-right: 16px;
}

.auction-bet-section__subtitle {
  margin: 0;
  margin-bottom: 32px;
  font-weight: 400;
  font-size: 48px;
  line-height: 48px;
}

.auction-bet-section__props {
  display: flex;
  margin-bottom: var(--gap);
}

.auction-bet {
  display: flex;
  flex-direction: column;
  margin-right: var(--gap);
  border-radius: 40px;
  padding: var(--gap);
  width: 296px;
  background-color: var(--color-athens);
}

.auction-bet__caption {
  margin-bottom: 16px;
  font-weight: 700;
  font-size: 20px;
  line-height: 20px;
  color: var(--color-dark);
}

.auction-bet__price {
  margin-bottom: 8px;
  font-weight: 700;
  font-size: 48px;
  line-height: 48px;
  color: var(--color-dark);
}

.auction-bet__price-dollars {
  font-weight: 700;
  font-size: 20px;
  line-height: 20px;
  color: var(--color-manatee);
}

.auction-timer {
  flex-grow: 1;
  border-radius: 40px;
  padding: var(--gap); /*32px */
  max-width: 460px;
  color: var(--color-light);
  background-color: var(--color-dark);
  background-image: url("../img/clock.svg");
  background-position: calc(100% - 32px) center;
  background-size: 121px 121px;
  background-repeat: no-repeat;
}

.auction-timer__caption {
  display: inline-block;
  margin-bottom: 16px;
  font-weight: 700;
  font-size: 20px;
  line-height: 20px;
}

.auction-timer__content {
  display: flex;
}

.auction-timer__part {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.auction-timer__part:not(:last-child) {
  margin-right: 26px;
}

.auction-timer__value {
  margin-bottom: 6px;
  font-weight: 700;
  font-size: 48px;
  line-height: 48px;
}

.auction-timer__text {
  font-weight: 700;
  font-size: 20px;
  line-height: 20px;
}

/* auction */
.auction {
  padding-top: 43px;
  padding-bottom: 88px;
}

.auction__title {
  margin-bottom: var(--gap);
}

.auction__list {
  display: flex;
  flex-wrap: wrap;
}

/* внешняя обертка карточки */
.auction__item {
  margin-bottom: var(--gap);
  width: calc((100% - (32px* 3)) / 4); /*расчет ширин одной карточки*/
}

.auction__item:not(:nth-child(4n)) { /*отступы для: за исключ. каждой 4-й*/
  margin-right: var(--gap);
}

.auction-product__image {
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 40px 40px 0px 0px;
  padding: 7px;
  background-color: var(--color-athens);
}

.auction-product__info {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  border-bottom-left-radius: 40px;
  border-bottom-right-radius: 40px;
  padding: 16px;
  padding-bottom: 32px;
  color: var(--color-light);
  background-color: var(--color-dark);
}

.auction__owner {
  margin-bottom: 17px;
}

.auction-product__title {
  margin: 0;
  margin-bottom: 13px;
  font-weight: 700;
  font-size: 20px;
  line-height: 20px;
}

.auction-product__price {
  margin-bottom: 11px;
  font-weight: 700;
  font-size: 20px;
  line-height: 20px;
  color: var(--color-primary);
}

.auction-product__timer {
  font-weight: 700;
  font-size: 16px;
  line-height: 16px;
  color: var(--color-manatee);
}

.btn-center {
  text-align: center;
}

.auction__more {
  padding: 20px 74px;
}

/* new */
.new {
  padding: 88px 0;
  background-color: var(--color-dark);
}

.new__title {
  margin-bottom: 34px;
  padding-left: 64px;
  color: var(--color-light);
  background-image: url("../img/fire.png");
  background-position: left center;
  background-size: 48px 48px;
  background-repeat: no-repeat;
}

.new__slider { /*слайдер*/
  overflow: hidden;
  margin-bottom: 65px;
  width: 100%;
}

.new__pagination { /*кнопки пагинации вынуь из абсолюта*/
  position: initial;
}

.new__stickers {
  display: flex;
}
/* стили для картинок внутри слайдера */
.new__stickers picture:not(:last-child) {
  margin-right: 28px;
}

.swiper-pagination-bullet { /*стили кнопок пагинации (текст +обводка)*/
  border: 2px solid var(--color-red);
  border-radius: 40px;
  padding: 8px 21px;
  width: auto;
  height: auto;
  font-weight: 700;
  font-size: 16px;
  line-height: 16px;
  color: var(--color-light);
  background-color: transparent;
  opacity: 1;
  transition: background-color 0.3s ease-in-out;
}

.swiper-pagination-bullet:not(:last-child) { /*расстоян. между кнопками*/
  margin-right: 20px;
}

.swiper-pagination-bullet-active {
  background-color: var(--color-red); /*фон кнопки у активной страницы*/
}

/* subscribe */
.subscribe {
  background-color: var(--color-red);
}

.subscribe__container {
  padding-top: var(--gap);
  padding-bottom: 29px;
  background-image: url("../img/subscribe-bg.png");
  background-position: calc(100% - 12px) center;
  background-repeat: no-repeat;
}

.subscribe__title {
  margin-bottom: 34px;
}

.subscribe-form {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  max-width: 460px;
}

.subscribe-form__input {
  margin-bottom: 16px;
  color: var(--color-light);
  background-color: var(--color-dark);
}

.subscribe-form__input::placeholder {
  color: var(--color-athens);
}

.subscribe-form__btn {
  margin-bottom: 9px;
  padding: 25px 85px;
}

.checkbox {
  position: relative;
  user-select: none;
}

.checkbox__input {
  position: absolute;
  opacity: 0;
}

.checkbox__text {
  position: relative;
  border: 1px solid transparent;
  padding-left: 21px;
  font-weight: 700;
  font-size: 12px;
  line-height: 12px;
  color: var(--color-light);
}

.checkbox__text::before { /*кастомное окошко чекбокса*/
  content: "";
  position: absolute;
  left: -1px;
  top: -1px;
  border: 1px solid currentColor;
  width: 14px;
  height: 14px;
}

.checkbox__text::after { /*почти кастомная галочка в окошке чекбокса*/
  content: "";
  position: absolute;
  left: -1px;
  top: -1px;
  width: 14px;
  height: 14px;
  background-image: url("../img/check.svg");/*галочка*/
  background-position: center;
  background-size: 65%;
  background-repeat: no-repeat;
  opacity: 0;
  transition: opacity 0.3s ease-in-out;
}

.checkbox__input:checked + .checkbox__text::after {
  opacity: 1;
}

.checkbox__input:focus + .checkbox__text { /*выделение текст при чекинге*/
  border-color: var(--color-light);
}

/* become author */
.become-author {
  padding-top: 90px;
  padding-bottom: 83px;
}

.become-author__content {
  display: flex;
}

.become-author__text {
  width: calc(50% - (var(--gap)) / 2);
  margin-right: var(--gap);
}

.become-author__title {
  margin-bottom: 15px;
}

.become-author__subtitle {
  margin: 0;
  margin-bottom: 17px;
  padding-right: 100px;
  font-family: 'Russo', sans-serif;
  font-weight: 700;
  font-size: 20px;
  line-height: 24px;
  color: var(--color-dark);
}

.become-author__descr {
  margin: 0;
  margin-bottom: var(--gap);
  padding-right: 10px;
  font-weight: 400;
  font-size: 20px;
  line-height: 30px;
}

.become-author__form {
  padding-top: 10px;
  width: calc(50% - (var(--gap)) / 2);
}

.become-author__input {
  margin-bottom: var(--gap);
  color: #717178;
  background-color: var(--color-athens);
}

.become-author__file {
  margin-bottom: var(--gap);
}

.become-author__btn {
  padding-left: 96px;
  padding-right: 96px;
}

.file {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-radius: 40px;
  padding: var(--gap);
  width: 100%;
  min-height: 342px;
  background: var(--color-athens);
  cursor: pointer;
}

.file__input { /*Выбор каталога с картинками: accept*/
  position: absolute;
  opacity: 0;
  appearance: none;
}

.file__icon {
  position: relative;
  border: 2px solid transparent;
  margin-bottom: 17px;
  border-radius: 100%;
  width: 100px;
  height: 100px;
  color: var(--color-athens);
  background-color: var(--color-light);
  transition: border-color 0.3s ease-in-out, color 0.3s ease-in-out;
}

.file__icon::before {/*псевдоэлемент:  Горизонтальная палка*/
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 40px;
  height: 6px;
  background-color: currentColor;
  transform: translate(-50%, -50%);
}

.file__icon::after {/*Вертикальная палка*/
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 6px;
  height: 40px;
  background-color: currentColor;
  transform: translate(-50%, -50%);
}

.file__content {
  font-weight: 400;
  font-size: 20px;
  line-height: 30px;
  color: var(--color-manatee);
}

.file__input:focus + .file__icon {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.file:hover .file__icon {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.file__input:active + .file__icon {
  border-color: var(--color-primary-active);
  color: var(--color-primary-active);
}

/* top */
.top {
  padding-top: 90px;
  padding-bottom: 57px;
  background-color: var(--color-dark);
}

.top__title {
  margin-bottom: var(--gap);
  color: var(--color-light);
}

.top__list {
  display: flex;
  flex-wrap: wrap;
}

.top__item {
  margin-bottom: var(--gap);
  width: calc(50% - (var(--gap) / 2));
}

.top__item:not(:nth-child(2n)) {
  margin-right: var(--gap);
}

.top-info__item {
  background-repeat: no-repeat;
}

.top-product {
  display: flex;
  align-items: center;
  border-radius: 40px;
  background-color: var(--color-light);
}

.top-product__image {
  margin-right: var(--gap);
  border-radius: 40px 0px 0px 40px;
  padding: 16px;
  padding-bottom: 10px;
  padding-right: 0;
  background: var(--color-athens);
}

.top-product__title {
  margin: 0;
  margin-bottom: 7px;
  font-weight: 700;
  font-size: 48px;
  line-height: 48px;
  color: var(--color-dark);
}

.top-product__price {
  font-weight: 700;
  font-size: 20px;
  line-height: 20px;
  color: var(--color-dark);
}

.top-product__price-dollars {
  color: var(--color-manatee);
}

.top-product__owner {
  margin-bottom: 7px;
}

/* top info */
.top-info {
  background-color: #37373e;
}

.top-info__container {
  padding: var(--gap) 12px;
  background-image: url("../img/top-info-bg.png");
  background-size: 460px 160px;
  background-position: calc(100% - 12px) center;
  background-repeat: no-repeat;
}

.top-info__title {
  margin: 0;
  margin-bottom: 15px;
  font-weight: 700;
  font-size: 24px;
  line-height: 24px;
  color: var(--color-light);
}

.top-info__item {
  padding-left: 40px;
  font-weight: 400;
  font-size: 18px;
  line-height: 32px;
  color: var(--color-light);
}

.top-info__item:not(:last-child) {
  margin-bottom: 16px;
}

/* footer */
.footer__top {
  padding-top: 20px;
  padding-bottom: 14px;
  background-color: var(--color-primary);
}

.footer__link {
  position: relative;
  font-weight: 700;
  font-size: 20px;
  line-height: 20px;
  color: var(--color-dark);
}

.footer__link::after { /*для анимации подчеркивания*/
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px; /*толщина линии подчеркивания*/
  background-color: currentColor;
  transform-origin: left; /*скрыть линию*/
  transform: scaleX(0);   /*скрыть линию*/
  transition: transform 0.3s ease-in-out; /*скорость показа*/
}

.footer__link:focus::after {
  transform: scaleX(1); /*показать линию*/
}

.footer__link:hover::after {
  transform: scaleX(1);/*показать линию*/
}


.footer__link:active::after {
  background-color: #717178;
  transform: scaleX(1);/*показать линию*/
  height: 5px;
}

.footer__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer__list {
  display: flex;
  align-items: center;
}

.footer__item:not(:last-child) {
  margin-right: var(--gap);
}

.footer__bottom {
  padding: 0 12px;
  text-align: center;
  background-color: var(--color-dark);
}

.footer__text {
  font-weight: 400;
  font-size: 12px;
  line-height: 12px;
  color: var(--color-light);
}