:root {
    --blue-color: #1e73ed;
    --pink-color: #ff59cf;
    --green-color: #baff00;
    --black-color: #000000;
    --white-color: #ffffff;
}

body {
    font-family: "Dela Gothic One", sans-serif;
    letter-spacing: normal;
    text-align: center;
    background-color: var(--white-color);
}

section {
    position: relative;
    padding: 6rem 0;
}

header,
main,
footer {
    overflow: hidden;
}

img {
    height: 100%;
    width: 100%;
}

.container {
    max-width: 1200px;
    margin: auto;
    padding: 2rem;
}

h2 {
    font-size: 4rem;
    text-transform: uppercase;
    margin-bottom: 2rem;
}

p {
    letter-spacing: 0.035em;
    line-height: 130%;
    font-size: 1.9rem;
}

nav a,
footer a {
    position: relative;
}

nav a::before,
footer a::before {
    content: "";
    display: block;
    position: absolute;
    width: 0;
    height: 2px;
    background-color: white;
    left: 0;
    bottom: -0.4rem;
    transition: 0.25s;
}

nav a:hover::before,
nav a:focus::before,
footer a:hover::before,
footer a:focus::before {
    width: 100%;
}

.def-interactive-btn {
    display: block;
    width: fit-content;
    padding: 1.5rem 2.5rem;
    background-color: var(--black-color);
    color: var(--white-color);
    transition: 0.35s;
    font-size: 2.1rem;
    line-height: 120%;
    border-radius: 10px;
    letter-spacing: 0.035em;
    margin: 0 auto;
}

.default-subtitle {
    font-family: "Outfit", sans-serif;
    font-weight: 500;
    margin-bottom: 4rem;
}

.def-interactive-btn:hover,
.def-interactive-btn:focus {
    scale: 0.85;
    color: var(--green-color);
}

#scrollUp {
    position: fixed;
    z-index: 10;
    width: 105px;
    height: 105px;
    right: 20px;
    bottom: 10px;
    cursor: pointer;
    animation: scaling 3s ease 0s infinite;
}

@keyframes scaling {
    0% {
        scale: 1;
    }

    50% {
        scale: 0.9;
    }

    100% {
        scale: 1;
    }
}

/* width */
::-webkit-scrollbar {
    width: 6px;
    height: 4px;
}

/* Track */
::-webkit-scrollbar-track {
    background: #8fc009;
}

/* Handle */
::-webkit-scrollbar-thumb {
    background: #1750a0;
}

/* Handle on hover */
::-webkit-scrollbar-thumb:hover {
    background: rgb(22, 74, 146);
}

/*----------header----------*/
header {
    position: relative;
    background-color: var(--blue-color);
    color: var(--white-color);
}

header::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 100%;
    background: url(../img/header_bg.png) center/ cover no-repeat;
}

.header-nav {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    padding: 2rem;
    background-color: var(--blue-color);
    z-index: 9;
    border-bottom: 1px solid white;
}

.header-nav .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo img {
    width: 180px;
    height: auto;
}

.mobile-nav-container,
#openBurgerButton {
    display: none;
}

#openBurgerButton {
    background-color: transparent;
    width: 45px;
    height: 45px;
}

#closeBurgerButton {
    width: 40px;
    height: 40px;
    background-color: transparent;
    position: absolute;
    top: 15px;
    right: 15px;
}

#closeBurgerButton::before,
#closeBurgerButton::after {
    content: "";
    position: absolute;
    top: 0;
    width: 3.5px;
    height: 100%;
    background-color: white;
    transition: 0.15s;
}

#closeBurgerButton:hover::before,
#closeBurgerButton:focus::before,
#closeBurgerButton:hover::after,
#closeBurgerButton:focus::after {
    scale: 1.09;
}

#closeBurgerButton::before {
    rotate: 45deg;
}

#closeBurgerButton::after {
    rotate: -45deg;
}

.mobile-nav-container.shown {
    position: fixed;
    display: block;
    height: 100%;
    width: 100%;
    top: 0;
    left: 0;
    transform: translateX(100%);
    transition: 0.6s;
    background-color: rgba(40, 44, 56, 0.363);
}

.mobile-nav-container.active {
    transform: translateX(0);
}

.mobile-nav-wrapper {
    position: absolute;
    right: 0;
    top: 0;
    height: 100%;
    padding: 6rem 4rem;
    width: fit-content;
    background-color: var(--blue-color);
    transform: translateY(-100%);
    transition: 0.4s;
}

.mobile-nav-wrapper.active {
    transform: translateY(0);
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links--mobile {
    flex-direction: column;
    gap: 2.5rem;
}

nav a::before {
    height: 3px;
}

.nav-link {
    font-size: 1.45rem;
    line-height: 180%;
}

.header-content {
    position: relative;
    padding: 14rem 0 4rem 0;
}

h1 {
    font-size: 6.5rem;
    line-height: 120%;
    color: var(--green-color);
    text-shadow: 6px 7px 0px rgba(0, 0, 0, 0.95);
    margin-bottom: 2.5rem;
    opacity: 0;
    transform: translateY(100%);
    transition: 0.65s;
}

h1.active {
    opacity: 1;
    transform: translateY(0);
}

.header-subtitle {
    margin-bottom: 4rem;
    text-transform: capitalize;
    opacity: 0;
    transform: translateX(75%);
    transition: 0.65s;
}

.header-subtitle.active {
    opacity: 1;
    transform: translateX(0);
}

.header-content .def-interactive-btn {
    margin-bottom: 4rem;
    transform: scale(0);
    transition: 0.65s;
}

.header-content .def-interactive-btn.active {
    transform: scale(1);
}

.header-content img {
    width: clamp(290px, 100%, 808px);
    height: auto;
    opacity: 0;
    transform: translateY(50%);
    transition: 0.65s;
}

.header-content img.active {
    opacity: 1;
    transform: translateY(0);
}

/*----------work-with----------*/
.work-with {
    padding: 2.5rem 0;
    background-color: var(--black-color);
    color: var(--white-color);
    text-transform: capitalize;
}

.work-with .container {
    position: relative;
    height: 60px;
    box-sizing: content-box;
}

.work-with p {
    position: absolute;
    width: 85%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 3.5rem;
}

#workWith {
    color: var(--green-color);
}

#workWithCursor {
    display: inline-block;
    width: 10px;
    height: 3.2rem;
    background-color: var(--green-color);
    transform: translate(35%, 7%);
}

#workWithCursor.active {
    animation: blinking 0.55s ease 0s infinite;
}

@keyframes blinking {
    from {
        opacity: 1;
    }

    to {
        opacity: 0;
    }
}

/*----------advantages----------*/
.advantages {
    background-color: var(--green-color);
}

.advantages-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    column-gap: 4rem;
    row-gap: 6rem;
}

.advantages-item {
    width: 30%;
    transition: 0.6s;
    opacity: 0;
    transform: translateY(60%);
}

.advantages-item.active {
    opacity: 1;
    transform: translateY(0);
}

.advantages-item img {
    width: 130px;
    height: 130px;
    margin-bottom: 2rem;
}

.advantages-item:nth-child(2) img {
    width: 150px;
}

.advantages-item h3 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.advantages-item p {
    font-family: "Outfit", sans-serif;
    font-weight: 500;
}

/*----------portfolio----------*/
.portfolio {
    background-color: var(--pink-color);
}

.portfolio-container {
    position: relative;
    padding: 4rem 4rem 2rem 4rem;
    border: 4px solid black;
    background-color: var(--white-color);
    transition: 0.6s;
    transform: scale(0);
}

.portfolio-container iframe {
    display: none;
}

.portfolio-container.active-immediately {
    transition: 0s;
}

.portfolio-container.active {
    transform: scale(1);
}

.portfolio-container.active iframe {
    display: block;
}

.videos-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 4rem;
    margin-bottom: 2rem;
    /* max-height: 224px; */
    overflow: hidden;
    transition: 1s;
}

.iframe-wrapper {
    width: 380px;
    height: 223.5px;
    border: 2px solid black;
}

.videos-container iframe {
    width: 100%;
    height: 100%;
}

#showMoreVideosBtn {
    padding: 1rem 2rem;
    font-size: 1.65rem;
}

#showMoreVideosBtn:hover,
#showMoreVideosBtn:focus {
    scale: 0.95;
}

/*----------benefits----------*/
.benefits {
    background-color: var(--white-color);
}

.benefits h2 {
    transition: 0.6s;
    opacity: 0;
    transform: translateY(-30%);
}

.benefits h2.active {
    opacity: 1;
    transform: translateY(0);
}

.benefits .default-subtitle {
    transition: 0.6s;
    opacity: 0;
    transform: translateX(40%);
}

.benefits .default-subtitle.active {
    opacity: 1;
    transform: translateX(0);
}

.benefits-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    column-gap: 2rem;
    row-gap: 4rem;
}

.benefit-item {
    width: 48%;
    padding: 2.5rem;
    border: 4px solid black;
    text-align: left;
    transition: 0.6s;
    opacity: 0;
    transform: translateY(45%);
}

.benefit-item.active {
    opacity: 1;
    transform: translateY(0);
}

.benefit-item img {
    width: auto;
    height: auto;
    margin-bottom: 4rem;
}

.benefit-item h3 {
    font-size: 3rem;
    margin-bottom: 2rem;
}

.benefit-item p {
    font-family: "Outfit", sans-serif;
    font-weight: 500;
}

/*----------numbers----------*/
.numbers {
    padding: 0;
    overflow: hidden;
}

.numbers-inner-wrapper {
    padding: 1rem 2rem;
    background-color: var(--black-color);
    transform: translateX(-100%);
    transition: 0.6s;
}

.numbers-inner-wrapper.active {
    transform: translateX(0);
}

.numbers-container {
    display: flex;
    flex-wrap: wrap;
    row-gap: 3rem;
    justify-content: space-between;
    color: var(--white-color);
}

.numbers-item {
    width: 30%;
}

.numbers-item-title {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.numbers-item-text {
    font-family: "Outfit", sans-serif;
    font-weight: 500;
    text-transform: capitalize;
    font-size: 1.5rem;
}

/*----------quiz----------*/
.quiz {
    position: relative;
    color: var(--white-color);
    background-color: var(--blue-color);
}

.quiz::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 100%;
    background: url(../img/question_main_bg.png) center/ contain no-repeat;
}

.quiz .container {
    position: relative;
}

.quiz h2 {
    font-size: 6rem;
    line-height: 120%;
    color: var(--green-color);
    text-shadow: 6px 7px 0px rgba(0, 0, 0, 0.95);
    margin-bottom: 2.5rem;
    transition: 0.6s;
    opacity: 0;
    transform: translateY(-20%);
}

.quiz h2.active {
    opacity: 1;
    transform: translateY(0);
}

.quiz-subtitle {
    transition: 0.6s;
    opacity: 0;
    transform: translateX(75%);
}

.quiz-subtitle.active {
    opacity: 1;
    transform: translateX(0);
}

.quiz-wrapper {
    width: clamp(320px, 95%, 600px);
    margin: auto;
    transition: 0.6s;
    opacity: 0;
    transform: translateY(30%);
}

.quiz-wrapper.active {
    opacity: 1;
    transform: translateY(0);
}

.quiz-form {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.quiz-subtitle {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 5rem;
    font-family: "Outfit", sans-serif;
    font-weight: 500;
    text-transform: capitalize;
    text-shadow: 0 0 12px black;
    font-size: 2.25rem;
}

.quiz-subtitle,
.quiz-label,
.quiz-input {
    line-height: 120%;
}

.quiz-steps-container {
    position: relative;
    overflow: hidden;
    transition: height 0.2s;
    padding: 0.1rem 0;
    box-sizing: content-box;
    text-shadow: 0 0 8px black;
}

.quiz-step {
    position: absolute;
    width: 100%;
    display: flex;
    flex-direction: column;
    left: 0;
    top: 0;
    transition: transform 0.25s;
}

.quiz-step--active {
    transform: translateX(0%);
}

.quiz-step--right {
    transform: translateX(200%);
}

.quiz-step--left {
    transform: translateX(-200%);
}

.quiz-step-subtitle {
    font-family: "Outfit", sans-serif;
    font-size: 1.85rem;
    margin-bottom: 4rem;
}

.quiz-input-wrapper {
    display: flex;
    flex-direction: column;
}

.quiz-input-wrapper:not(:last-child) {
    margin-bottom: 2.5rem;
}

.quiz-label {
    display: inline-block;
    position: relative;
    font-size: 1.65rem;
    font-family: "Outfit", sans-serif;
    color: white;
    width: fit-content;
    border-radius: 100px;
    text-align: left;
    margin-bottom: 1rem;
}

.quiz-label span {
    position: relative;
}

.quiz-input {
    font-size: 1.5rem;
    padding: 0.8rem 1.2rem;
    font-family: "Outfit", sans-serif;
    border: 2px solid #2b2a54;
    border-radius: 10px;
}

.quiz-input:not(:last-child) {
    margin-bottom: 1.5rem;
}

.quiz-input.valid {
    border-color: #28792c;
}

.buttons-container {
    display: flex;
    justify-content: center;
    gap: 2rem;
}

.quiz-button {
    display: block;
    width: fit-content;
    padding: 1rem 2rem;
    background-color: var(--black-color);
    color: var(--white-color);
    transition: 0.35s;
    font-size: 1.5rem;
    line-height: 120%;
    border-radius: 10px;
    letter-spacing: 0.035em;
}

.quiz-button:not(:disabled):hover,
.quiz-button:not(:disabled):focus {
    scale: 0.95;
    color: var(--green-color);
}

.quiz-button:disabled {
    color: #ccc;
    border-color: #ccc;
    cursor: not-allowed;
}

/*----------footer----------*/
footer {
    padding: 3rem 0;
    background-color: var(--black-color);
    color: var(--white-color);
}

footer .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 4rem;
}

.footer-title {
    font-size: 3rem;
    text-transform: capitalize;
}

.footer-contacts {
    display: flex;
    gap: 4rem;
}

.footer-contacts a {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.35rem;
}

.footer-contacts img {
    width: 35px;
    height: 35px;
}


/* Portfolio Carousel */
.slide-content {
    width: calc(100% - 8rem);
    margin: 0 auto;
}

.swiper .swiper-button-next,
.swiper .swiper-button-prev {
    border: solid 2px var(--black-color);
    border-radius: 50%;
    height: 40px;
    width: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--black-color);
    transition: all linear .2s;
}

.swiper .swiper-button-next:hover,
.swiper .swiper-button-prev:hover {
    background-color: var(--black-color);
    color: var(--white-color);
}


.swiper .swiper-button-next:after,
.swiper .swiper-button-prev:after {
    font-size: 1.5rem;
}

.portfolio-info {
    background-color: var(--black-color);
    color: var(--white-color);
    padding: 1rem 2rem;
    word-spacing: 4px;
}

/*media queries*/
@media (max-width: 1199px) {
    .nav-links--desktop {
        display: none;
    }

    #openBurgerButton {
        display: block;
    }

    .advantages-container {
        justify-content: center;
    }

    .advantages-item {
        width: clamp(300px, 80%, 600px);
    }

    .slide-content {
        width: 100%;
    }

    .portfolio-info {
        font-size: 0.85rem;
    }
}

@media (max-width: 999px) {
    .portfolio .default-subtitle {
        margin-bottom: 2rem;
    }

    .videos-container {
        max-height: 524px;
    }

    .iframe-wrapper {
        width: 420px;
        height: 247px;
    }

    footer .container {
        justify-content: space-around;
    }

    .footer-contacts {
        flex-direction: column;
    }
}

@media (max-width: 899px) {
    html {
        font-size: 13px;
    }

    .portfolio-container {
        padding: 3rem;
    }

    h2 {
        font-size: 3.5rem;
    }

    .benefit-item,
    .numbers-item {
        width: 100%;
    }

    .numbers-item-title {
        margin-bottom: 1rem;
    }

    .footer-title {
        font-size: 2.5rem;
    }
}

@media (max-width: 679px) {
    #scrollUp {
        width: 75px;
        height: 75px;
    }

    footer .container {
        padding: 0 2rem;
        flex-direction: column;
    }

    .footer-contacts {
        gap: 2rem;
    }

    .portfolio-info {
        font-size: 0.70rem;
    }

    .swiper .swiper-button-next,
    .swiper .swiper-button-prev {
        height: 25px;
        width: 25px;
    }

    .swiper .swiper-button-next:after,
    .swiper .swiper-button-prev:after {
        font-size: 1rem;
    }
}

.quiz-thanks {
    font-size: 1.75rem;
    line-height: 120%;
}

@media (max-width: 579px) {
    h1 {
        font-size: 5.5rem;
    }

    h2 {
        font-size: 2.7rem;
    }

    .quiz h2 {
        font-size: 5rem;
    }

    .videos-container {
        max-height: 211.7px;
    }

    .iframe-wrapper {
        width: 360px;
        height: 211.7px;
    }
}

@media (max-width: 479px) {
    html {
        font-size: 12px;
    }

    h1 {
        font-size: 5rem;
    }

    .work-with {
        padding: 3.5rem 0;
    }

    .work-with p {
        font-size: 3rem;
    }

    #workWithCursor {
        width: 6px;
        font-size: 2.8rem;
        transform: translate(35%, 15%);
    }

    .quiz h2 {
        font-size: 4.5rem;
    }
}

@media (max-width: 359px) {
    .work-with .container {
        height: 120px;
    }
}