*,
*:before,
*:after {
    padding: 0;
    margin: 0;
    outline: none;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

body {
    overflow-x: hidden;
}

a {
    color: #fff;
    text-decoration: none;
}

/* Header */
header {
    background: #28323f;
    height: 78.5px;
}

.back-to-top {
    position: fixed;
    z-index: 9999;
    display: none;
    box-shadow: 10px 8px 11px 0px rgba(50, 50, 50, 0.58);
    right: 30px;
    bottom: 40px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border-color: transparent;
    transition: ease-in-out 0.3s;
    background-color: #ff5e00;
}

.back-to-top:hover,
.back-to-top:focus {
    background-color: #d44f02;
    outline: none;
}

.back-to-top::before,
.back-to-top::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.back-to-top::before {
    width: 4px;
    height: 20px;
    border-top-left-radius: 3px;
    border-top-right-radius: 3px;
    background-color: #fff;
}

.back-to-top::after {
    width: 15px;
    height: 15px;
    transform: translate(-50%, -50%) rotate(45deg);
    border-top: 4px solid #fff;
    border-left: 4px solid #fff;
}

.container {
    display: flex;
    justify-content: space-evenly;
    align-items: center;
}

a.nav__link {
    font-size: 17px;
    font-weight: 500;
    color: #fff;
    transition: ease 0.3s;
    text-decoration: none;
    margin-left: 22px;
}

a.nav__link:hover {
    color: #ff5e00;
    text-decoration: transparent;
}

img.logo {
    width: 125px;
}

/* phone */
img.tel-photo {
    width: 25px;
    margin-right: 10px;
}

.tel-number {
    display: flex;
    align-items: center;
}

a.tel {
    text-decoration: none;
    font-size: 16px;
    transition: ease 0.3s;
    color: #fff;
    font-weight: 500;
}

a.tel:hover {
    color: #ff5e00;
    text-decoration: transparent;
}

/* Container */
.inner__container {
    max-width: 1340px;
    margin: 0 auto;
}

/* main photo */
.photo-img {
    background-image: url(img/photo-main.jpg);
    background-repeat: no-repeat;
    background-size: cover;
    background-position: 50% 0%;
    width: 100%;
    height: 100%;
    top: 0px;
    z-index: -1;
    position: fixed;
}

h1.main__title {
    max-width: 100%;
    font-size: 38px;
    text-transform: uppercase;
    color: #fff;
    font-weight: bold;
    margin-left: 100px;
    margin-top: 100px;
    padding-bottom: 25px;
}

/* Advantage */
ul.advantage {
    margin-left: 60px;
    font-size: 18px;
    color: rgb(0, 0, 0);
    font-weight: 500;
}

.advantage {
    margin-bottom: 8px;
    padding: 0;
    padding-right: 20px;
    max-width: 750px;
    counter-reset: li;
    /* Устанавливет счётчик */
}

.advantage li {
    position: relative;
    border: 2px solid #267ac3;
    background: #EBF3FA;
    padding: 16px 20px 16px 28px;
    margin: 12px 0 12px 40px;
    -webkit-transition-duration: 0.3s;
    transition-duration: 0.3s;
}

.advantage li:hover {
    background: #FFF;
}

.advantage li:before {
    line-height: 32px;
    position: absolute;
    top: 8px;
    left: -40px;
    width: 40px;
    text-align: center;
    font-size: 16px;
    font-weight: bold;
    color: #FFF;
    background: #267ac3;
    counter-increment: li;
    content: counter(li);
    transition-duration: 0.3s;
}

.advantage li:hover:before {
    /* Стили для треугольников при наведении*/
    width: 46px;
}

.advantage li:after {
    position: absolute;
    left: 0;
    top: 8px;
    content: "";
    border: 16px solid transparent;
    border-left-color: #267ac3;
    transition-duration: 0.3s;
}

.advantage li:hover:after {
    margin-left: 6px;
}


/* button */
.button {
    position: relative;
    margin-left: 100px;
    color: #fff;
    margin-top: 20px;
}

.btn {
    display: flex;
    margin-bottom: 30px;
    color: #fff;
    height: 60px;
    padding: 25px;
    width: 230px;
    transition: ease 0.3s;
    align-items: center;
    font-weight: bold;
    box-shadow: 10px 8px 11px 0px rgba(50, 50, 50, 0.58);
    font-size: 16px;
    border-style: solid;
    text-decoration: none;
    background: #384658;
}

.btn:hover{
    background: #222b36;
}

/* form */
.form {
    padding: 25px;
    max-width: 430px;
    margin: 0 auto;
    box-sizing: border-box;
    overflow: hidden;
    background: #f9f9f9;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2), 0 10px 18px rgba(0, 0, 0, 0.2);
}

.close {
    cursor: pointer;
    position: absolute;
    right: -25px;
    bottom: 65px;
    width: 35px;
    color: #384658;
    height: 30px;
    opacity: 0.3;
}

.close:hover {
    opacity: 1;
}

.close:before,
.close:after {
    position: absolute;
    left: 15px;
    content: ' ';
    height: 30px;
    width: 2px;
    background-color: #384658;
}

.close:before {
    transform: rotate(45deg);
}

.close:after {
    transform: rotate(-45deg);
}

.input__form {
    width: 98%;
    position: relative;
    background-color: #fff;
    border: 2px solid #BFE2FF;
    border-radius: 2px;
    margin-bottom: 20px;
}

.input__form {
    width: calc(100% - 10px);
    display: block;
}

.input__form:first-child {
    margin-right: 20px;
    margin-top: 30px;
}

.input-at {
    display: block;
    width: 100%;
    background: transparent;
    color: #000;
}

input.input-at {
    height: 50px;
    padding: 0 16px 0 16px;
    font-size: 16px;
    border: none;
}

.input-at {
    min-height: 60px;
    padding: 18px 20px;
    font-size: 16px;
    line-height: 22px;
    border: none;
    resize: none;
}

textarea.input-at:focus,
input.input-at:focus {
    border-color: transparent;
}

.focus-input-at {
    position: absolute;
    display: block;
    width: calc(100% + 2px);
    height: calc(100% + 2px);
    top: -1px;
    left: -1px;
    pointer-events: none;
    border: 2px solid #267ac3;
    border-radius: 2px;
    visibility: hidden;
    opacity: 0;
    transition: all 0.3s;
    transform: scaleX(1.1) scaleY(1.3);
}

.input-at:focus+.focus-input-at {
    visibility: visible;
    opacity: 1;
    transform: scale(1);
}

.form-btn {
    position: relative;
    display: block;
    padding: 0 40px;
    height: 50px;
    background-color: #384658;
    border-radius: 2px;
    font-size: 16px;
    font-weight: bold;
    color: #fff;
    text-transform: uppercase;
    line-height: 1.2;
    transition: all 0.3s;
    margin: 0 auto;
    border: none;
    cursor: pointer;
}

.form-btn:hover {
    background-color: #222b36;
}

/* mоdal */
.modal-dialog {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background: #000000cc;
    display: none;
    pointer-events: none;
}

.close {
    cursor: pointer;
    position: absolute;
    right: -25px;
    bottom: 65px;
    width: 35px;
    color: #384658;
    height: 30px;
    opacity: 0.3;
}

.close:hover {
    opacity: 1;
}

.close:before,
.close:after {
    position: absolute;
    left: 15px;
    content: ' ';
    height: 30px;
    width: 2px;
    background-color: #384658;
}

.close:before {
    transform: rotate(45deg);
}

.close:after {
    transform: rotate(-45deg);
}

.modal-dialog:target {
    display: block;
    z-index: 100;
    pointer-events: auto;
}

.modal-dialog>div {
    width: 100%;
    position: relative;
    margin: 10% auto;
    padding: 5px 20px 13px 20px;
}

/* content */
.content {
    width: 100%;
    display: block;
    min-height: 100vh;
    margin-top: 125px;
    color: #fbfbfb;
    font-size: 19px;
    background-color: #28323f;
}

.about__title {
    text-align: center;
    padding-top: 20px;
    color: #fbfbfb;
    margin-bottom: 10px;
    border-bottom: 5px solid #ff5e00;
    font-size: 32px;
    margin: 0 auto;
    font-weight: bold;
    width: 705px;
    text-transform: uppercase;
}

.header__top {
    text-align: center;
    padding: 40px 0px 0px 0px;
    color: #fbfbfb;
    border-bottom: 5px solid #ff5e00;
    font-size: 26px;
    font-weight: bold;
    max-width: -moz-fit-content;
    max-width: fit-content;
    text-transform: uppercase;
}

.about__us {
    padding-top: 25px;
    line-height: 1.4;
    text-align: justify;
}

.prof__about {
    line-height: 1.4;
    padding-top: 15px;
    text-align: justify;
}

/* 
summary {
    color: #080808;
    margin: 12px 0px 5px 0px;
    text-align: center;
    cursor: pointer;
}

summary:hover {
    color: #ff5e00;
    transition: all 0.4s;
} */

/* stylized list */
.square {
    margin: 0;
    counter-reset: li;
    list-style: none;
    padding: 0px 10px 10px 10px;
}

.square li {
    position: relative;
    margin: 0 0 10px 20px;
    padding: 4px 8px;
    border-top: 2px solid #28323f;
    transition: 0.2s linear;
}

.square li:last-child {
    margin-bottom: 0;
}

.square li:before {
    content: counter(li);
    counter-increment: li;
    position: absolute;
    top: -2px;
    left: -2em;
    width: 2em;
    box-sizing: border-box;
    margin-right: 8px;
    padding: 4px;
    border-top: 2px solid #28323f;
    border-left: 2px solid transparent;
    border-right: 2px solid transparent;
    border-bottom: 2px solid transparent;
    background: #28323f;
    color: white;
    font-weight: bold;
    text-align: center;
    transition: 0.2s linear;
}

.square li:hover {
    border-top: 2px solid #ff5e00;
}

.square li:hover:before {
    border: 2px solid #ff5e00;
    background: #ff5e00;
}


/* service */
.service {
    display: flex;
    justify-content: center;
    margin: 0 auto;
    padding: 20px 0px 0px 0px;
    flex-flow: wrap;
    color: #080808;
}

.service__title {
    font-size: 21px;
    font-weight: bold;
    color: #080808;
    margin: 12px 15px 12px 15px;
    text-align: center;
}

.service__subtitle {
    font-size: 16px;
    line-height: 1.3;
    font-weight: 500;
    padding-left: 10px;
    padding-right: 10px;
    padding-bottom: 10px;
    margin-left: 5px;
}

.service__card {
    display: inline-block;
    width: 290px;
    box-shadow: 12px 19px 19px 3px rgba(0, 0, 0, 0.534);
    margin: 0px 22px 30px 22px;
    transition: ease-in-out 0.2s;
    height: auto;
    background-color: #ebebeb;
}

.service__card:hover {
    box-shadow: 8px 9px 8px 5px rgb(53, 73, 99);
}

.image {
    overflow: hidden;
    width: 100%;
    height: 221px
}

/* scale for image */
.image img {
    -moz-transition: all 1s ease-out;
    -o-transition: all 1s ease-out;
    -webkit-transition: all 1s ease-out;
}

.image img:hover {
    -webkit-transform: scale(1.1);
    -moz-transform: scale(1.1);
    -o-transform: scale(1.1);
}


.about {
    padding: 20px;
    margin: 0 auto;
}

/* feedback */
.feedback {
    padding-bottom: 30px;
    padding: 20px 30px 20px 30px;
    margin: 0px auto;
}

.feedback__container {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    justify-content: end;
    margin: 0px 0px 0px 20px;
}

.feedback__card {
    color: #28323f;
    background-color: #ebebeb;
    box-shadow: 8px 8px 8px 3px rgba(0, 0, 0, 0.534);
    width: 400px;
    padding: 20px 0px 20px 0px;
    transition: ease-in-out 0.3s;
    margin: 40px 20px 30px 20px;
    height: -moz-fit-content;
    height: fit-content;
}

.feedback__content {
    margin: auto;
}

.feedback__avatar {
    padding: 0px 0px 0px 0px;
    display: flex;
    justify-content: center;
}

.feedback__name {
    padding: 5px;
    width: 80%;
    margin: auto;
    text-align: center;
    font-size: 22px;
    display: flex;
    font-weight: bold;
    justify-content: center;
}

.feedback__city {
    font-size: 16px;
    display: flex;
    font-style: italic;
    font-weight: bold;
    padding: 0px 0px 10px 0px;
    justify-content: center;
}

.feedback__text>a {
    display: block;
    padding: 10px;
    margin-top: 10px;
    text-align: center;
    text-transform: uppercase;
    color: #fff;
    border: 0;
    background-color: #267AC3;
    border-bottom: 3px solid #1c62a0;
}

.feedback__text {
    margin: auto;
    line-height: 1.3;
    font-size: 16px;
    padding: 10px 0px 0px 0px;
    width: 80%;
}

.feedback__text>a {
    display: block;
    padding: 10px;
    margin-top: 10px;
    text-align: center;
    text-transform: uppercase;
    color: #fff;
    border: 0;
    background-color: #267AC3;
    border-bottom: 3px solid #1c62a0;
}

img.avatar {
    width: 110px;
}

/* Slider */
.slick-slider {
    min-width: 0;
}

.slick-list {
    overflow: hidden;
}

.slick-track {
    display: flex;
    align-items: flex-start;
}

.slider {
    position: relative;
    padding: 0px 0px;
}

.slider .slick-arrow {
    position: absolute;
    top: 50%;
    border: 0;
    margin: -30px 20px 0px 20px;
    z-index: 10;
    font-size: 0;
    width: 13px;
    cursor: pointer;
    height: 60px;
}

.slider .slick-arrow.slick-prev {
    left: -40px;
    background: url('img/sl-arrow_l.svg') 0 0 / 100% no-repeat;
}

.slider .slick-arrow.slick-next {
    right: -40px;
    background: url('img/sl-arrow_r.svg') 0 0 / 100% no-repeat;
}

.slider .slick-arrow.slick-disabled {
    opacity: 0.2;
}

.slider .slick-dots {
    display: flex;
    align-items: center;
    justify-content: center;
}

.slider .slick-dots li {
    list-style: none;
    margin: 0px 10px;
}

.slider .slick-dots button {
    font-size: 0;
    width: 10px;
    border: 0;
    cursor: pointer;
    height: 10px;
    background-color: #fff;
    border-radius: 50%;
}

.slider .slick-dots li.slick-active button {
    background-color: transparent;
    border: 1px solid #fff;
}

/* Portfolio */
.case {
    padding: 20px;
}

.case__items {
    display: flex;
    padding: 10px;
    font-weight: 500;
}

.case__btn {
    background-color: #267ac3;
    box-shadow: 10px 8px 11px 0px rgb(27, 27, 27);
    padding: 15px;
    color: #fff;
    text-decoration: none;
    margin: 20px 15px 10px 10px;
    cursor: pointer;
    text-align: center;
    border-style: solid;
    transition: ease-in-out 0.3s;
}

.case__btn:hover {
    background-color: #1f5e95;
}

.case__projects {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
}


.case__block {
    position: relative;
    display: none;
}

.case__name {
    color: #080808;
    font-size: 21px;
    padding: 10px;
    width: 85%;
    margin: auto;
    font-weight: bold;
    text-align: center;
}

.case__project {
    background-color: #ebebeb;
    width: 295px;
    height: 470px;
    margin: 40px 30px 20px 0px;
    transition: ease-in-out 0.3s;
}

.case__project:hover {
    box-shadow: 8px 9px 8px 5px rgb(53, 73, 99);
}

.case__price {
    display: block;
    background-color: #ff5e00;
    font-size: 18px;
    padding: 11px;
    margin: 15px auto 10px;
    border-radius: 20px;
    width: 160px;
    font-weight: bold;
    box-shadow: 10px 8px 11px 0px #ff5e00b7;
    text-align: center;
    cursor: pointer;
    
}

.case__privilege,
.case__privilege-2 {
    display: flex;
    align-items: center;
    color: #080808;
}

.case__photo {
    width: 100%;
}

.case__img {
    width: 30px;
    margin: 10px 10px 10px 30px;
}

/* Accordion */
.accordion {
    padding: 20px 20px 20px 20px;
}

.accordion__items {
    margin: 40px 0px 20px 0px;
}

button.accordion {
    width: 100%;
    background-color: #f1f1f1;
    border: none;
    text-align: left;
    padding: 22px 20px;
    font-size: 19px;
    font-weight: 600;
    color: #333;
    cursor: pointer;
    transition: 0.2s linear;
}

p.accordion__title:after {
    content: '\f055';
    font-family: "fontawesome";
    font-size: 18px;
    float: right;
    color: #28323f;
}

button.accordion:hover,
button.accordion.is-open {
    background-color: #dbdbdb;
    border: none;
}

.accordion__content {
    background-color: white;
    border-bottom: 2px solid #b3b3b3;
    color: #080808;
    font-size: 16px;
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.2s ease-in-out;
}

p.accordion__text {
    padding: 20px;
    font-size: 16px;
    font-family: Tahoma, Geneva, Verdana, sans-serif;
}

.questions {
    padding: 20px;
}

.contact__wrapper {
    width: 100%;
    max-width: 558px;
    padding-top: 40px;
    margin-bottom: 0px;
}

.contact__form {
    padding: 20px 20px 40px 20px;
}

.red__required {
    color: red;
}

.form__inputs {
    display: flex;
}

.textarea__contact {
    width: 100%;
    outline: none;
    resize: none;
    overflow: auto;
    margin-top: 3px;
    height: 160px;
    border-radius: 5px;
    padding: 10px;
    border: 1px solid #535353;
}

.input__contact {
    width: 100%;
    margin-top: 3px;
    padding: 10px;
    border-radius: 5px;
    height: 40px;
    font-size: 18px;
    margin-bottom: 30px;
    border: 1px solid #535353;
}


.button__block {
    display: flex;
    justify-content: flex-end;
}

.contact__btn {
    color: #fff;
    height: 50px;
    width: 165px;
    outline: none;
    transition: ease 0.3s;
    font-weight: bold;
    box-shadow: 10px 8px 11px 0px rgba(50, 50, 50, 0.58);
    font-size: 16px;
    border: 2px solid #fff;
    text-decoration: none;
    background: #404e63;
    margin-top: 15px;
    cursor: pointer;
}

.contact__btn:hover,
.contact__btn:focus {
    background: #384658a4;
}

/* @Media */
@media screen and (max-width: 730px) {
    header {
        height: 68px;
    }

    .feedback__card {
        margin: 40px 5px 30px 5px;
        box-shadow: none;
    }

    .about__title {
        padding-top: 40px;
        margin-bottom: 10px;
        font-size: 22px;
        margin: 0 auto;
        text-align: center;
        font-weight: bold;
        max-width: fit-content;
        max-width: -moz-fit-content;
    }

    button.accordion {
        font-size: 16px;
    }

    .photo-img {
        background-size: inherit;
        background-position: 40% 0%;
    }

    a.nav__link:first-child {
        font-size: 14px;
    }

    img.logo {
        width: 107px
    }

    a.nav__link {
        font-size: 14px;
    }

    .content {
        font-size: 16px;
    }

    ul.advantage {
        padding: 12px;
        margin-left: 0px;
        font-size: 15px;
    }

    .advantage {
        max-width: 650px;
    }

    .advantage li {
        padding: 16px 20px 16px 28px;
    }

    h1.main__title {
        font-size: 25px;
        margin-left: 50px;
        margin-right: 10px;
        margin-top: 80px;
    }

    .btn {
        text-align: center;
        width: 208px;
        margin: auto;
        padding: 16px;
    }

    .btn:hover {
        padding: 19px;
        width: 208px;
        margin: auto;
    }

    .header__top {
        padding-top: 40px;
        margin-bottom: 10px;
        font-size: 22px;
        margin: 0 auto;
        text-align: center;
        font-weight: bold;
        max-width: fit-content;
        max-width: -moz-fit-content;
    }

    .info {
        font-size: 16px;
    }

    .button {
        position: relative;
        color: #fff;
        margin: 0px;
    }

    .button {
        position: relative;
        color: #fff;
        margin: 0px;
    }

    .service__title {
        font-size: 19px;
        font-weight: bold;
        color: #080808;
        margin: 12px 10px 12px 10px;
        text-align: center;
    }

    .case__items {
        justify-content: center;
    }

    .square {
        font-size: 15px;
    }

    .modal-dialog>div {
        width: 100%;
        position: relative;
        margin: 20% auto;
        padding: 5px 20px 13px 20px;
    }

    img.avatar-1,
    .avatar-2,
    .avatar-3,
    .avatar-4 {
        width: 100px;
    }

    .feedback__name {
        font-size: 19px;
    }
}

@media (min-width: 730px) and (max-width: 950px) {
    p.title {
        font-size: 30px;
    }

}

@media (min-width: 320px) and (max-width: 950px) {
    img.tel-photo {
        margin: 12px;
    }

    a.tel {
        font-size: 0px;
    }
}

@media (max-width: 768px) {
    ul.slider .slick-dots {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .validate-input-at.w-50 {
        width: 100%;
    }

    .validate-input-at.w-50:first-child {
        margin-right: 0;
    }

    .alert-validate::before {
        visibility: visible;
        opacity: 1;
    }
}

@media (max-width: 600px) {
    .case__project {
        background-color: #ebebeb;
        width: 295px;
        height: 475px;
        margin: 40px 0px 20px 0px;
        transition: ease-in-out 0.3s;
    }
}

@media (min-width: 650px) {
  .textarea__contact {
    width: 100%;
    outline: none;
    resize: none;
    overflow: auto;
    margin-top: 3px;
    height: 160px;
    border-radius: 5px;
    padding: 10px;
    border: 1px solid #535353;
    }
}


::-webkit-scrollbar-button {
    background-image: url('');
    background-repeat: no-repeat;
    width: 11px;
    height: 0px
}

::-webkit-scrollbar-track {
    background-color: #28323F;
}

::-webkit-scrollbar-thumb {
    -webkit-border-radius: 0px;
    border-radius: 10px;
    background-color: #ffffff
}

::-webkit-scrollbar-thumb:hover {
    background-color: #d15913
}

::-webkit-resizer {
    background-image: url('');
    background-repeat: no-repeat;
    width: 11px;
    height: 0px
}

::-webkit-scrollbar {
    width: 11px;
}