@font-face {
    font-family: font-5;
    src: url(/assets/Fonts/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa1ZL7.woff2);
}

@font-face {
    font-family: secondary-font;
    src: url(/assets/Fonts/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa25L7SUc.woff2);
}

@font-face {
    font-family: font-3;
    src: url(/assets/Fonts/PTSans-Regular.ttf);
}

@font-face {
    font-family: font-4;
    src: url(/assets/Fonts/NunitoSans-VariableFont_YTLC\,opsz\,wdth\,wght.ttf);
}

@font-face {
    font-family: primary-font;
    src: url(/assets/Fonts/NotoSansJP-VariableFont_wght.ttf);
}

/* comman classes for re-use */

:root {
    /* background color */
    --primary-color-btn: rgb(64 89 198);
    --box-1: #77B4F2;
    --box-2: #f0c9ca;
    --box-3: #e9bb3c;
    --box-4: #bca5f2;
    --box-5: #a0d16b;

    /* text color */
    --primary-color: #222222;
    --secondary-color: #7a6666;
    --white-color: #ffffff;
    --black-color: #000;
    --grye-color: #666866;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    height: 100%;
}

body {
    font-family: primary-font;
    font-weight: 600;
    font-size: 100%;
    display: flex;
    flex-direction: column;
    min-height: 100%;
}


::-webkit-scrollbar {
    width: 0.425rem;
}

::-webkit-scrollbar-track {
    background: var(--white-color);
}

::-webkit-scrollbar-thumb {
    background: var(--box-1);
}

a {
    text-decoration: none;
}

.link-tag {
    color: var(--primary-color);
}

.link-tag:hover {
    color: var(--bs-link-color);
}

ul {
    margin: 0;
    padding: 0;
}

li {
    list-style: none;
}

h1 {
    font-size: 3.5714rem;
    font-weight: 800;
    line-height: 1.7;
    color: var(--primary-color);
    text-transform: capitalize;
}

h2 {
    font-size: 2.8714rem;
    font-weight: 700;
    line-height: 1.3;
    color: var(--primary-color);
    text-transform: capitalize;
}

h3 {
    font-size: 1.8714rem;
    font-weight: 700;
    line-height: 1.7;
    color: var(--primary-color);
    text-transform: capitalize;
}

h4 {
    font-size: 1.4714rem;
    font-weight: 600;
    line-height: 2.5rem;
    color: var(--primary-color);
    max-width: 75%;
    text-transform: capitalize;
}

p {
    font-size: 1.1rem;
    color: var(--secondary-color);
    font-weight: 400;
    line-height: 1.75rem;
    letter-spacing: 0.0625rem;
    margin-bottom: 0;
    font-family: secondary-font;
}

.wrapper {
    padding-top: 6.25rem;
    padding-bottom: 6.25rem;
}

.topper {
    margin-top: calc(0% + 150px);
}

.linkToRedirect {
    color: var(--bs-link-color);
    font-weight: 100;
    font-size: 1.3rem;
}


/* start Home page layout */


.navbar-toggler:focus,
.btn-close:focus {
    box-shadow: none;
    outline: none;
}



/* navbar section layout */

.main-btn {
    display: inline-block;
    padding: 4px 14px;
    border-radius: 1.8rem;
    font-size: 1rem;
    line-height: 1.8rem;
    font-weight: 600;
    text-align: center;
    border: 2.5px solid var(--box-1);
    position: relative;
    z-index: 1;
    transition: 0.5s;
    -webkit-transition: 0.5s;
    overflow: hidden;
}

.main-btn:after {
    position: absolute;
    top: 0;
    left: 0;
    content: "";
    visibility: hidden;
    opacity: 0;
    z-index: -1;
    transition: 0.5s;
    -webkit-transition: 0.5s;
}

.style-btn {
    color: var(--black-color);
}

.style-btn::after {
    top: -0.1429rem;
    left: -0.1429rem;
    width: calc(100% + 0.2857rem);
    height: 0;
    background: var(--box-1);
    border-radius: 0.3rem;
}

.main-btn:hover::after {
    visibility: visible;
    opacity: 1;
}

.style-btn:hover::after {
    height: calc(100% + 0.2857rem);
}

.navigation-wrap {
    width: 100%;
    position: fixed;
    top: 0;
    left: 0;
    transition: all 0.3s ease-out;
    -webkit-transition: all 0.3s step-end;
}

.navigation-wrap .navbar-brand img {
    width: 5rem;
}

.navigation-wrap .nav-item {
    padding: 0 10px;
    /* transition: all 200ms linear; */
}

.navigation-wrap .navbar-toggler i {
    font-size: 1.8rem;
    color: var(--grye-color);
    font-weight: 600;
}

.navigation-wrap .navbar-toggler i:active {
    color: var(--black-color);
}

.navbar {
    z-index: 999;
    transition: 0.3s ease-in-out;
    background: rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
}

.navbar-nav .nav-item .nav-link {
    font-weight: 600;
    font-size: 18px;
    color: var(--primary-color);
}

.navbar-nav .nav-item .nav-link:hover,
.nav-link:active {
    color: var(--bs-link-color);
}

/* .offcanvas-header {
    z-index: 1;
    background: turquoise;
}

.offcanvas-body {
    transform: translateY(-300px);
    z-index: -1;
} */

/* hero section */

.hero-section {
    width: 100%;
    height: 100%;
    padding-top: calc(0% + 10rem);
}

/* .hero-contant{
    overflow: hidden;
} */
.hero-section .hero-contant .hero-img {
    display: flex;
    justify-content: center;
    position: absolute;
    height: 100%;
    top: 0;
    right: 0;
}

.hero-section .hero-contant .hero-img img {
    width: auto;
    z-index: -1;
}

/* .hero-section .hero-contant .hero-text {
    z-index: -1;
} */

.hero-contant {
    position: relative;
    overflow: hidden;
}

.ReDirect-Modules {
    color: var(--bs-link-color);
}

/* intero-section */
.icons-intro {
    position: relative;
}

.icons-intro::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url(/assets/background-img/bg-4.png);
    background-position: center;
    object-fit: cover;
    background-size: cover;
    background-size: contain;
    z-index: -1;
    opacity: 0.3;
}

.intro-section .item {
    display: block;
    position: relative;
    font-size: 1.2rem;
    min-width: 190px;
    border-radius: 10px;
    padding: 20px 15px 0px;
    transition: 200ms ease-in-out;
    background-color: var(--box-1);
}

.intro-section .card-container .item:hover {
    transform: translate(0, -10px);
}

.intro-section .item strong {
    display: block;
    box-shadow: rgb(221, 221, 221) 2px 4px 8px;
    color: var(--primary-color);
    margin: 20px -15px -15px;
    background: rgb(255, 255, 255);
    padding: 15px;
    border-radius: 0px 0px 10px 10px;
    font-weight: 600;
    font-size: 1.354rem;
    letter-spacing: 0.039rem;
}

.intro-section .item span {
    display: block;
    min-height: 60px;
}

.card-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 60px 40px;
}


/* module inter section */

.modules-intro {
    position: relative;
}

.modules-intro::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url(/assets/background-img/module-bg.png);
    background-position: center;
    object-fit: cover;
    background-size: cover;
    background-size: contain;
    z-index: -1;
    opacity: 0.3;
}

.modules-intro .intro-img {
    display: flex;
    justify-content: center;
}

.modules-intro .intro-img img {
    max-width: 100%;
    object-fit: contain;
    background-position: center;
    display: block;
    margin: 0 auto;
}

.modules-intro .modules-intro-img img {
    max-width: 100%;
    object-fit: contain;
    background-position: center;
    display: block;
    margin: 0 auto;
}

/* footer section */

footer {
    height: 50px;
    margin-top: auto;
}

.footer-section .footer-text p {
    color: var(--black-color);
    text-align: center;
}

/* End Home page layout */


/* start modules page layout */


/* modules-section card layout */
.modules-item h3 a {
    color: var(--primary-color);
    font-size: 1.29rem;
    font-weight: 600;
}

.modules-item .module-opts a {
    color: var(--bs-link-color);
}

.modules-item .module-opts {
    margin: 10px 0 15px;
    height: 100%;
    display: flex;
    align-items: self-end;
}

.modules-section .modules-card .modules-item .description p {
    font-size: 0.89rem;
    font-family: primary-font;
    line-height: 1.3rem;
}

.modules-section .modules-card .modules-item {
    position: relative;
    display: flex;
    flex-direction: column;
    border-top: 5px solid;
    padding-top: 10px;
    box-shadow: rgba(0, 0, 0, 0.05) 0px 1px 2px 0px;
}

.modules-section .modules-card .modules-item .number {
    position: absolute;
    top: 0;
    left: -7px;
    transform: translateY(-50%);
    font-size: 2.5rem;
    font-weight: 600;
    display: block;
    background: var(--white-color);
    line-height: 0.5;
    width: 30px;
}

.modules-section .modules-card .modules-item .chapter-count {
    margin: 5px 0 10px;
}

.modules-section .modules-card {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 40px;
}

/* .modules-section{
    position: relative;
}
.modules-section::before{
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url(/assets/background-img/module-bg.png);
    background-position: center;
    object-fit: cover;
    background-size: cover;
    background-size: contain;
    z-index: -1;
    opacity: 0.3;

} */



/* End modules page layout */




/* start Introduction to Heat Transfer page layout >>>>>>>>>>>>>> ( chapters list page layout ) */

/* header section */
.module-detiled-sections .header-section .module-count {
    display: inline-block;
    border: 8px solid #ffffff;
    min-width: 50%;
    margin-bottom: 10px;
    border-bottom-color: var(--box-3);
}

.module-detiled-sections .header-section .module-count .module-number {
    font-size: 5rem;
    margin: 0px 0px -45px -10px;
    background: white;
    float: left;
    font-weight: 600;
}

.module-detiled-sections .header-section .module-title h1 {
    font-size: 2rem;
    font-weight: 600;
    font-family: primary-font;
    line-height: 1.7;
    color: var(--primary-color);
    text-transform: capitalize;
    margin-bottom: 30px;
}

.module-detiled-sections .header-section .module-option a {
    font-size: 1rem;
    font-family: primary-font;
    color: var(--bs-link-color);
    font-weight: 400;
}

.module-detiled-sections .header-section {
    border-bottom: 1px dotted #0000004a;
}

/* chepters section */
.module-detiled-sections .chapter-list .chapter-box .item {
    padding-bottom: 10px;
    margin-bottom: 20px;
}

.module-detiled-sections .chapter-list .chapter-box .item h4 {
    margin-bottom: 10px;
}

.module-detiled-sections .chapter-list .chapter-box .item p {
    margin-bottom: 10px;
    font-size: 1rem;
    font-family: primary-font;
    letter-spacing: 0.25px;
    line-height: 1.34;
}


/* end Introduction to Heat Transfer  page layout >>>>>>>>>>>>>> ( chapters list page layout ) */

/* Start Domain page layout */

/* domain card layout */
.domain .domain-box {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 50px;
}

.domain .domain-box .domain-item {
    border-bottom: 10px solid var(--box-1);
    box-shadow: rgba(99, 99, 99, 0.2) 0px 2px 8px 0px;
    padding: 12px;
    border-radius: 6px;

}

.domain .domain-box .domain-item .domain-img img {
    width: 80px;
    height: 80px;
    vertical-align: middle;
    border-radius: 50%;
    object-fit: contain;
    /* box-shadow: rgba(0, 0, 0, 0.45) 0px 25px 20px -20px; */
}

.domain .domain-box .domain-item .domain-img {
    margin: 0 0 10px 0;
}

/* .domain .domain-box .domain-item:hover {
    box-shadow: rgba(0, 0, 0, 0.25) 0px 25px 50px -12px;
} */



/* .domain .domain-box .domain-item .domain-img  {
    box-shadow: rgba(0, 0, 0, 0.17) 0px -23px 25px 0px inset, rgba(0, 0, 0, 0.15) 0px -36px 30px 0px inset, rgba(0, 0, 0, 0.1) 0px -79px 40px 0px inset, rgba(0, 0, 0, 0.06) 0px 2px 1px, rgba(0, 0, 0, 0.09) 0px 4px 2px, rgba(0, 0, 0, 0.09) 0px 8px 4px, rgba(0, 0, 0, 0.09) 0px 16px 8px, rgba(0, 0, 0, 0.09) 0px 32px 16px;
} */



.domain .domain-box .domain-item .domain-title {
    margin: 0 0 10px 0;
}

.domain .domain-box .domain-item .domain-decription {
    margin: 0 0 10px 0;
}

.domain .domain-box .domain-item .domain-decription p {
    margin: 0 0 10px 0;
    font-size: 0.89rem;
    font-family: primary-font;
    letter-spacing: 0.25px;
    line-height: 1.34;
}



/* End Domain page layout */


/* start chapters contents page layout */

/* header sections */
.chapter-contant-sections .header-section {
    border-bottom: 1px dotted #00000059;
}

.chapter-contant-sections .header-section .module-title {
    margin: 10px 0;
}

.chapter-contant-sections .header-section .module-title a strong {
    font-size: 1rem;
    font-weight: 600;
}

.chapter-contant-sections .header-section .module-title a {
    padding: 0;
    border-bottom: 5px solid var(--box-1);
}

.chapter-contant-sections .header-section .chapter-box div .chapter-title {
    font-weight: 600;
    font-size: 2.19rem;
    margin: 10px 0;
}

.chapter-contant-sections .header-section .chapter-box .chapter-option {
    place-content: center;
}

.chapter-contant-sections .header-section .chapter-box .chapter-option a {
    font-size: 1rem;
    font-weight: 400;
    margin: 0 0 0 15px;
    display: inline-block;
}

.chapter-nav-option {
    font-size: 1rem;
    font-weight: 400;
}

/* chapter content body */
.chapter-contant-sections .topper .chapter-content {
    max-width: 700px;
    margin: 0 auto;
}

/* .chapter-contant-sections .topper .chapter-content .post {
    border: 1px solid rgb(255, 0, 0);
} */

.chapter-contant-sections .topper .chapter-content .post p {
    font-size: 0.98rem;
    color: #787a78;
    font-family: primary-font;
    letter-spacing: 0px;
    line-height: 1.5;
    margin: 10px 0;
    text-align: justify;
}

.cont-title {
    font-size: 1.59rem;

}

/* content tables */
.post table {
    border-collapse: collapse;
    width: 100%;
    font-family: primary-font;
    table-layout: fixed;
    font-size: min(max(0.5rem, 3vw), 0.8rem);
}

th {
    background-color: var(--black-color);
    color: var(--white-color);
}

td,
th {
    border: 1px solid #dddddd;
    text-align: center;
    padding: 8px;
}

tr:nth-child(even) {
    background-color: #dddddd;
}

/* unorder-list in content */
.post ul {
    margin: 0 0 1rem 0;
    padding: 0 0 0 2rem;
    color: var(--grye-color);
}

.post ul li {
    list-style: unset;
}

/* images layout */
.post .img-box img {
    display: block;
    margin: auto;
    background-position: center;
    object-fit: contain;
    background-size: contain;
    max-width: 100%;
}

/* formulas center align and text format class */
.post .formula-center {
    display: block;
    text-align: center;
    font-size: min(max(1.2rem, 3vw), 0.85rem);
    margin: 12px 0;
}

.post.formula-center .mtight,
.mbin,
.mrel {
    font-weight: 600;
    color: black;
}

/* end chapters contents page layout */




/* start login and signup form layout page */

.loginPageBody {
    display: flex;
    flex-direction: column;
}

/* .loginPageBox {
    max-width: 450px;
    width: 100%;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
} */

.form-box {
    padding: 10px 20px;
    display: none;
}

.form-box.active {
    display: block;
}

.form-box form {
    display: flex;
    flex-direction: column;
    padding: 20PX 20px;
    max-width: 500px;
    margin: 0 auto;
    box-shadow: rgba(255, 255, 255, 0.1) 0px 1px 1px 0px inset, rgba(50, 50, 93, 0.25) 0px 50px 100px -20px, rgba(0, 0, 0, 0.3) 0px 30px 60px -30px;
}

.loginPageBox .form-box .heading {
    max-width: 100%;
    text-align: center;
    font-size: 1.54rem;
    margin: 10px 0;
}

.form-box form input {
    width: 100%;
    padding: 10px;
    background: var(--white-color);
    border-radius: 6px;
    border: 1px solid black;
    outline: none;
    font-size: 1.15rem;
    color: var(--black-color);
    margin: 10px 0;
}

.form-box form a {
    margin: 10px 0 0 0;
    font-size: 0.9rem;
    font-weight: 400;
}

.form-box form .btn {
    padding: 10px;
    border-radius: 4rem;
    border: none;
    font-size: 1rem;
    font-weight: 600;
    margin: 20px 0 0 0;
    background: #3a57bf;
    color: var(--white-color);
}

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

.form-box form .btn:hover,
.btn:active {
    background: #233680;
    color: var(--white-color);
}

.form-box form p {
    margin: 20px 0 0 0;
    text-align: end;
    font-size: 1.15rem;
}

.form-box form .chek-box {
    width: max-content;
    scale: 1.5;
    margin: 0 10px 0 5px;
}

.loginPageBody .logo-box img {
    width: 80px;
}

.form-box form .back-btn {
    text-align: center;
    display: inline-flex;
    align-self: center;
    padding: 2px 22px;
    /* border: 1px solid rgb(47, 130, 207); */
    border-radius: 22px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--black-color);
    transition: 0.2s all ease;
    cursor: pointer;
}

.form-box form .back-btn:hover,
.form-box form .back-btn:active {
    background: var(--box-1);
}





/* end login and signup form layout page */




/* start coming soon banner design */

.coming-soon {
    width: 100%;
    height: 100vh;
    border-top: 10px solid rgba(76, 0, 255, 0.404);
}

.coming-soon .container img {
    display: block;
    margin: auto;
    background-position: center;
    object-fit: contain;
    background-size: contain;
    max-width: 100%;
    margin-top: 10rem;
}


/* end coming soon banner design */