/* ---- Connect fonts ---- */
@import url('https://fonts.googleapis.com/css2?family=Inter:ital,opsz,wght@0,14..32,100..900;1,14..32,100..900&display=swap');

/* ---- Root variables ---- */
:root {
    --primary-color: #4A8AC8;
    --secondary-color: #FA9848;
    --light-background-color: #ffffff13;
    --white-color: #fff;
    --dark-blue-color: #003364;
    --box-shadow: 0 6px 32px -3px #2a6094;

    --font-family: "Inter", serif;
    --font-size: 62.5%;
}

/* ---- Main styles ---- */
html {
    scroll-behavior: smooth;
    font-size: var(--font-size);
    color: var(--second-text-color);
    font-family: var(--font-family);
    height: 100%;
}

body {
    font-size: 1.6rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex-grow: 1;
    background-color: var(--primary-color);
    overflow: hidden;
}

a,
button {
    transition: all 0.2s ease-in;
}

::selection {
    color: var(--white-color);
    background-color: var(--secondary-color);
}

.container {
    max-width: 110rem;
    margin: 0 auto;
    padding: 0rem 1.5rem;
    height: 100%;
}

.text-end {
    text-align: end;
}

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

.margin-center {
    margin: 0 auto;
}

/* ---- Header ---- */

.header-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;

    padding: 2.5rem 0;
}

.header-logo {
    font-size: 4.8rem;
    font-weight: bold;
    color: var(--primary-color);
}

.header-logo span {
    color: var(--secondary-color);
}

.nav-list {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2.5rem;
}

.nav-link {
    font-weight: bold;
    color: var(--primary-color);

    border-bottom: 0.2rem solid transparent;
}

.nav-link:hover {
    border-color: var(--secondary-color);
    color: var(--secondary-color);
}

.bg-link {
    background-color: var(--primary-color);
    padding: 1rem 3.5rem;
    border-radius: 2.5rem;
    color: var(--white-color);
    border: none;
}

.bg-link:hover {
    background-color: var(--secondary-color);
    color: var(--white-color)
}

/* ---- Hero ---- */

.hero {
    padding: 8.5rem 0;

    position: relative;
}

.hero::before {
    content: '';

    position: absolute;

    width: 84rem;
    height: 48.1rem;

    bottom: 0;
    left: -15rem;

    z-index: 0;

    background: url('../images/hero/hero.png') no-repeat;
}

.hero-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: start;
    gap: 4.5rem;

    position: relative;
    z-index: 1;

    width: 100%;
}


.half {
    width: 50%;

    display: flex;
    justify-content: center;
}

.section-header {
    background-color: var(--light-background-color);
    box-shadow: var(--box-shadow);
    padding: 3.6rem 4.3rem;
    border-radius: 3.6rem;

    width: fit-content;
    min-width: 43.5rem;

    transition: all 0.3s ease-in;
}

.section-header:hover {
    transform: scale(1.1);
}

.section-title {
    color: var(--white-color);
    text-transform: uppercase;
    font-size: 3.2rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.section-subtitle {
    color: var(--white-color);
    font-size: 2rem;
}

.cards-list {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;

    gap: 1.5rem;
}

.card-item {
    background-color: var(--light-background-color);
    box-shadow: var(--box-shadow);

    border-radius: 2.4rem;
    width: 240px;
}

.card-img {
    width: 100%;
    padding: 2rem 4.5rem;
    margin-bottom: 2rem;

    transition: all 0.3s ease-in;
}

.card-item:hover .card-img {
    transform: scale(1.1);
}

.card-desc {
    background-color: var(--white-color);
    width: 100%;
    padding: 1.5rem 0;

    border-radius: 2.4rem;
    text-align: center;

    transition: all 0.3s ease-in;
}

.card-item:hover .card-desc {
    background-color: var(--secondary-color);
}

.card-title {
    color: var(--dark-blue-color);
    font-size: 2rem;
    font-weight: 700;

    margin-bottom: 1rem;

    transition: all 0.3s ease-in;
}

.card-subtitle {
    color: var(--dark-blue-color);
    font-size: 1.4rem;
    font-weight: 700;

    transition: all 0.3s ease-in;
}

.card-item:hover .card-subtitle,
.card-item:hover .card-title {
    color: var(--white-color);
}

@media screen and (max-width: 1100px) {
    .hero-wrapper {
        gap: 2rem;
    }

    .cards-list {
        gap: 1rem;
        justify-content: center;
    }

    .card-img {
        width: 100%;
        padding: 1.5rem 3.5rem;
    }
}

/* ---- Categories ---- */

.categories {
    padding: 8.5rem 0;

    position: relative;
}

.categories::before {
    content: '';

    position: absolute;

    width: 84rem;
    height: 48.1rem;

    top: -5px;
    left: -6.35rem;

    z-index: 0;

    background: url('../images/categories/bg.png') no-repeat;
}

.categories-list {
    position: relative;
    z-index: 1;
}

.categories-header {
    display: flex;
    justify-content: space-between;
    align-items: start;

    position: relative;
    z-index: 1;

    margin-bottom: 5rem;
}

.hashtags-list {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;

    max-width: 50%;
}

.hashtag-item {
    background-color: var(--secondary-color);
    color: var(--white-color);
    font-size: 1.4rem;
    font-weight: 600;
    padding: 1.5rem 2rem;
    border-radius: 3.6rem;

    box-shadow: var(--box-shadow);
    transition: all 0.3s ease-in;
}

.hashtag-item:hover {
    transform: scale(1.1);
}

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

.section-link {
    color: var(--white-color);
    border: var(--white-color) solid 0.1rem;
    padding: 1.6rem 5rem;
    border-radius: 3.8rem;

    position: relative;
    z-index: 1;

    margin: 0 auto;
}

.section-link:hover {
    background-color: var(--white-color);
    color: var(--primary-color);
}

.section-footer {
    text-align: center;
    margin-top: 5rem;
}

/* ---- About us---- */


.about-us {
    padding: 8.5rem 0;

    position: relative;
}

.about-us::before {
    content: '';

    position: absolute;

    width: 121.7rem;
    height: 100%;

    top: 0;
    right: -70rem;
    z-index: 0;

    background: url('../images/about-us/bg.png') no-repeat;
}

.about-us-content {
    margin-top: 5rem;
}

.about-us-title {
    display: inline-block;
    font-size: 2.4rem;
    font-weight: 700;
    color: var(--white-color);
    background-color: var(--secondary-color);
    padding: 1.2rem 3.2rem;
    border-radius: 3.6rem;
    margin-bottom: 1.5rem;
}


.about-us-subtitle {
    color: var(--white-color);
    font-size: 2.4rem;
    margin-left: 3rem;
    margin-bottom: 4rem;
}

.about-us-list {
    display: flex;
    flex-direction: column;
    max-width: 60%;
}

.about-us-item {
    color: var(--white-color);
    font-size: 1.6rem;
    position: relative;

    width: 100%;
    height: 21rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-us-item:first-child {
    background: url('../images/about-us/message.png') no-repeat;
}

.about-us-item:nth-child(2) {
    background: url('../images/about-us/message-2.png') no-repeat;
    margin-left: 5rem;
}

.about-us-item:first-child p {
    max-width: 60%;
    margin-left: -10rem;
    margin-top: -1rem;
}

.about-us-item:nth-child(2) p {
    max-width: 60%;
    margin-left: -12rem;
    margin-top: -1rem;
}

/* ---- Reviews ---- */

.reviews {
    padding: 8.5rem 0;

    position: relative;
}

.reviews::before {
    content: '';

    position: absolute;

    width: 98.7rem;
    height: 100%;

    top: -15rem;
    right: 40rem;
    z-index: 0;

    background: url('../images/reviews/bg.png') no-repeat;
}

.slider {
    margin-top: 10rem;

    position: relative;
    z-index: 0;

    width: 100%;
}

.slider::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100%;
    background: linear-gradient(80deg, rgba(74, 138, 200, 1) 0%, rgba(74, 138, 200, 0) 50%, rgba(74, 138, 200, 1) 100%);

}

.slider-item {
    position: relative;
    max-width: 60rem;
    margin: 0 1rem;
    transition: all 0.3s ease;
    opacity: 1;
}

.slick-track {
    display: flex !important;
    align-items: center;
}

.slider-item:not(.slick-active) {
    width: 50rem;
}

.slider-item>img {
    transition: all 0.3s ease;
}

.slider-item:not(.slick-active)>img {
    height: 100%;
}

.comment-content {
    position: absolute;
    inset: 7rem 7rem 10rem 7rem;

    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.comment-header {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.comment-author-img {
    width: 8rem;
    height: 8rem;
    object-fit: cover;
    border-radius: 50%;
}

.slider-item:not(.slick-active) .comment-author-img {
    width: 6rem;
    height: 6rem;
}

.comment-info {
    color: var(--white-color);

    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.comment-name {
    font-size: 2.4rem;
    font-weight: 900;
}

.slider-item:not(.slick-active) .comment-name {
    font-size: 1.8rem;
}

.comment-subject {
    text-align: center;
    padding: 0.5rem 1rem;
    background-color: var(--secondary-color);
    border-radius: 1.8rem;
}

.slider-item:not(.slick-active) .comment-subject {
    font-size: 1.4rem;
}

.comment-text,
.comment-date {
    color: var(--white-color);
    font-size: 1.9rem;
}

.slider-item:not(.slick-active) .comment-text,
.slider-item:not(.slick-active) .comment-date {
    font-size: 1.6rem;
}

.comment-date {
    text-align: end;
}

.slick-next:before {
    content: '❯' !important;
}

.slick-prev {
    left: 0 !important;
    z-index: 1;
    margin-left: 1rem;
}

.slick-next {
    right: 0 !important;
    z-index: 1;
    margin-right: 3rem;
}

.slick-prev:before {
    content: '❮' !important;
}

.slick-prev:before,
.slick-next:before {
    background-color: transparent;
    padding: 1rem 1.5rem 1.2rem 1.6rem;
    border-radius: 50%;
    border: 0.1rem solid var(--white-color);
}

.message-team {
    margin: 0 auto;
    max-width: 54rem;

    position: relative;
}

.message-team-content {
    position: absolute;
    color: var(--white-color);

    inset: 5rem 6rem 9rem 6rem;

    font-size: 2rem;
}

.message-team-content p {
    font-weight: 700;
}

/* ---- Teachers ---- */

.teachers {
    padding: 8.5rem 0;
    position: relative;
}

.teachers::before {
    content: '';

    position: absolute;

    width: 146rem;
    height: 91rem;

    top: 0;
    right: 45rem;
    z-index: 0;

    background: url('../images/teachers/bg.png') no-repeat;
}


.teachers .section-header {
    margin-bottom: 5rem;
    position: relative;
    z-index: 1;
}

.teachers .card-item {
    margin: 2rem;
    overflow: hidden;

    position: relative;
}

.card-link {
    width: 100%;
    height: 100%;
}

.teachers .card-img {
    padding: 0;
    margin: 0;
    border-top-left-radius: 2.5rem;
    border-top-right-radius: 2.5rem;

    height: 100%;
    object-fit: cover;
}

.teachers .card-desc {
    background-color: #4a89c8cf;

    position: absolute;
    bottom: 0;
}

.teachers .card-title,
.teachers .card-subtitle {
    color: var(--white-color);
}

.teachers .slick-track {
    height: 45rem;
    padding: 3rem 0;
}

.teachers .slick-prev {
    left: -6rem !important;
    z-index: 1;
}

.slick-next {
    right: -6rem !important;
    z-index: 1;
}

.teachers .slick-prev:before {
    background-color: transparent;
    padding: 1rem 1.5rem 1.2rem 1.6rem;
    border-radius: 50%;
    color: var(--primary-color);
    border: 0.1rem solid var(--primary-color);
}

/* ---- Footer ---- */

.copyright {
    color: var(--primary-color);
    font-size: 1.4rem;
    text-align: center;
    margin-bottom: 1rem;
}

/* ---- Login ---- */

.login {
    height: 100%;

    margin-top: 20rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login.reg {
    margin-top: 15rem;
}

.login-form {
    background-color: var(--light-background-color);
    padding: 4rem;
    border-radius: 2.5rem;
    box-shadow: var(--box-shadow);
    border: 0.1rem solid var(--white-color);
    width: 45rem;

    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.login-title {
    font-size: 3.2rem;
    text-transform: uppercase;
    color: var(--white-color);
    font-weight: 700;
    text-align: center;
}

.input-wrapper {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;


}

.input-wrapper label {
    font-size: 2rem;
    color: var(--white-color);
}

.form-input,
.form-select {
    background-color: var(--light-background-color);
    padding: 1rem 1.5rem;
    color: var(--white-color);
    border-radius: 3rem;
    border: 0.1rem solid var(--white-color);
}

.form-input::placeholder {
    color: #ffffff73;
}

.form-input:focus,
.form-select:focus {
    box-shadow: var(--box-shadow);
    outline: none;
}

select {
    background: url(data:image/svg+xml;base64,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) no-repeat 100% 50%;


    -moz-appearance: none;
    -webkit-appearance: none;
    -webkit-border-radius: 0px;
    appearance: none;
    outline-width: 0;

    display: block;
    border: none;

    border-bottom: 1px solid #757575;
}

.form-select option {
    color: var(--dark-blue-color);
}

.form-button {
    background-color: var(--dark-blue-color);
    padding: 1rem 2.5rem;
    border-radius: 3rem;
    color: var(--white-color);
    align-self: center;
}

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

.form-footer a {
    color: var(--white-color);
}

.form-footer a:hover {
    text-decoration: underline;
}

.login-form p {
    color: var(--white-color);
    text-align: center;
}

.teachers-list .card-item {
    height: 40rem;
    width: 30rem;
}

.profile-wrapper {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;

    margin: 8rem 0;
}

.profile-info,
.profile-form,
.profile-desc {
    padding: 3rem;
    background-color: var(--light-background-color);
    border-radius: 2.5rem;
    box-shadow: var(--box-shadow);
}

.profile-info {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.profile-info__name {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    color: var(--white-color);
}

.profile-info__name h1 {
    font-size: 2.5rem;
    font-weight: 700;
}

.profile-info__name .highlight {
    width: fit-content;
    padding: 0.5rem 1.5rem;
    border-radius: 1.5rem;
    background-color: var(--secondary-color);
}

.profile-info__img {
    width: 15rem;
    height: 15rem;
}

.profile-info__img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

.profile-courses {
    background-color: var(--secondary-color);
    padding: 3rem;
    border-radius: 2.5rem;
    box-shadow: var(--box-shadow);
}

.profile-courses h2 {
    color: var(--white-color);
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    padding-bottom: 1rem;

    border-bottom: 0.1rem solid var(--white-color);
}

.profile-courses__list {
    display: flex;
    flex-direction: column;
}

.profile-courses__item {
    border-bottom: 0.1rem solid var(--white-color);
}

.profile-courses__item a {
    display: block;
    padding: 1rem 0.5rem;
    font-weight: 600;
    color: var(--white-color);
}

.profile-courses__item a:hover {
    color: var(--dark-blue-color);
    background-color: #ffffff8a;
}

.profile-desc {
    grid-column: 1 / 3;
}

.profile-desc h2 {
    color: var(--white-color);
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
    padding-bottom: 1rem;

    border-bottom: 0.1rem solid var(--white-color);
}

.profile-desc p {
    color: var(--white-color);
    margin-bottom: 1rem;
}

.profile {
    margin: 8rem 0;
}

.course-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr 1fr;
    gap: 2rem;
}

.course-wrapper .profile-info:first-child {
    grid-column: 1 / 2;
    grid-row: 1 / 2;
}

.course-wrapper .profile-info:nth-child(2) {
    grid-column: 1 / 2;
    grid-row: 2 / 4;

    flex-direction: column;
    align-items: flex-start;
}

.course-wrapper .profile-info:nth-child(2) h2 {
    color: var(--white-color);
    font-size: 2.5rem;
    font-weight: 700;
    padding-bottom: 1rem;

    width: 100%;

    border-bottom: 0.1rem solid var(--white-color);
}

.course-wrapper .profile-info-wrapper {

    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;

    width: 100%;
}

.course-wrapper .profile-info-wrapper .profile-info__name {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.course-wrapper .profile-info-wrapper .profile-info__name a {
    color: var(--white-color);
}

.course-wrapper .profile-info-wrapper .profile-info__name a:hover {
    text-decoration: underline;
}

.course-wrapper .profile-desc {
    grid-column: 2 / 3;
    grid-row: 1 / 3;
}

.course-profile-desc {
    width: 100%;
    color: var(--white-color);
}

.course-profile-desc h2 {
    color: var(--white-color);
    font-size: 2.5rem;
    font-weight: 700;
    padding-bottom: 1rem;
    margin-bottom: 2rem;

    border-bottom: 0.1rem solid var(--white-color);
}

.course-wrapper .profile-courses .profile-courses__list {
    text-align: end;
    justify-content: end;
    height: 100%;
    gap: 1rem;
    padding-bottom: 4rem;
}

.course-wrapper .profile-courses .profile-courses__item {
    color: var(--white-color);
    font-weight: 700;
    border: none;
}

.course-wrapper .profile-courses .profile-courses__item b {
    font-size: 2.5rem;
}

.course-wrapper .profile-courses .profile-courses__item a {
    background-color: #003364;
    padding: 1rem 2rem;
    border-radius: 2.5rem;
    width: fit-content;
}

.course-wrapper .profile-courses .profile-courses__item a:hover {
    color: var(--secondary-color);
}

.course-wrapper .profile-courses .profile-courses__item:last-child {
    display: flex;
    justify-content: end;
}

.invalid-feedback {
    color: var(--secondary-color);
    font-size: 1.2rem;
}

.is-invalid {
    border-color: var(--secondary-color) !important;
}