:root {
  --green: #00e77f;
  --white: #fff;
  --light-white: #aaa;
  --black: #3d3d3d;
  --light-bg: #4b4b4b;
}
* {
  font-family: IRANSans;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  text-decoration: none;
  outline: none;
  border: none;
  transition: linear 0.2s;
  direction: rtl;
}

html {
  font-size: 62.5%;
  scroll-behavior: smooth;
  overflow-x: hidden;
  scroll-padding-top: 8rem;
  background-color: var(--black);
}

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

::-webkit-scrollbar {
  height: 0.5rem;
  width: 1rem;
}

::-webkit-scrollbar-track {
  background-color: transparent;
  z-index: 99999;
}

::-webkit-scrollbar-thumb {
  background-color: var(--green);
  border-radius: 5rem;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
  position: relative;
}
/**Header*/
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  background-color: var(--light-bg);
  z-index: 999;
}

.site-header .logo {
  color: var(--white);
  font-size: 2.5rem;
}
.site-header .header-nav {
  z-index: 99;
}
.site-header .header-nav ul {
  list-style-type: none;
  display: flex;
}
.site-header .header-nav ul li a {
  font-size: 2rem;
  color: var(--light-white);
  margin-left: 3rem;
}

.site-header .header-nav a:hover {
  color: var(--green);
}

.site-header .header-nav.active {
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
}

#menu-btn {
  font-size: 2.5rem;
  color: var(--white);
  display: none;
  cursor: pointer;
}

#menu-btn.icon-cross {
  transform: rotate(90deg);
  transition: 0.3s;
}
#menu-btn.icon-bars {
  transition: 0.3s;
}

/**Home*/

.home .container {
  gap: 1.5em;
}

.home .content,
.home .image {
  flex: 1 1 40rem;
  gap: 1.5em;
}
.home .content {
  text-align: center;
}
.home .content h3 {
  color: var(--white);
  margin-bottom: 1rem;
  font-size: 10rem;
  line-height: 1;
}
.home .content h3 span {
  color: var(--green);
}

.home .image img {
  width: 100%;
}
.btn {
  display: inline-block;
  background-color: var(--light-bg);
  color: var(--white);
  margin-top: 1rem;
  border-radius: 5rem;
  padding: 1rem 3rem;
  font-size: 1.8rem;
  cursor: pointer;
}
.btn:hover {
  background-color: var(--white);
  color: var(--black);
}
.heading {
  margin-bottom: 2.5rem;
  text-align: center;
  font-size: 4rem;
  color: var(--white);
}
.heading span {
  color: var(--green);
}
/**Count*/
.count .box-container .box {
  color: var(--light-white);
  background-color: var(--light-bg);
  text-align: center;
  border-radius: 0.5rem;
  padding: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2.5rem;
}

.count .box-container .box i {
  font-size: 5rem;
  color: var(--green);
}

.count .box-container .box .content h3 {
  font-size: 2rem;
  color: var(--white);
  margin-bottom: 0.5rem;
}
.count .box-container .box .content p {
  font-size: 1.6rem;
  color: var(--light-white);
}

/**About*/
.about .about-container {
  gap: 1.5em;
}

.about .content,
.about .image {
  flex: 1 1 40rem;
}
.about .content {
  text-align: center;
}
.about .content h3 {
  color: var(--white);
  font-size: 3rem;
}
.about .content p {
  color: var(--white);
  font-size: 1.6rem;
  padding: 1rem 0;
  line-height: 2;
}
.about .image img {
  width: 100%;
}

/**Course*/
.course .slide {
  background-color: var(--light-bg);
  border-radius: 0.5rem;
  text-align: center;
  padding: 2rem;
  margin-bottom: 4rem;
  -webkit-user-select: none; /* Safari */
  -ms-user-select: none; /* IE 10+ */
  user-select: none;
}

.course .slide img {
  height: 25rem;
  width: 100%;
}

.course .slide h3 {
  margin: 1.5rem 0;
  font-size: 2rem;
  color: var(--white);
}

.course .slide p {
  line-height: 2;
  font-size: 1.6rem;
  color: var(--light-white);
}

.swiper-pagination-bullet {
  background-color: var(--white);
}

.swiper-pagination-bullet-active {
  background-color: var(--green);
}

/**Teacher*/
.teacher .slide {
  position: relative;
  width: 40rem;
  overflow: hidden;
  -webkit-user-select: none; /* Safari */
  -ms-user-select: none; /* IE 10+ */
  user-select: none;
  margin-bottom: 4rem;
}

.teacher .slide img {
  height: 55rem;
  width: 100%;
  border-radius: 0.5rem;
  object-fit: cover;
}

.teacher .slide h3 {
  margin-top: 1.5rem;
  color: var(--white);
  font-size: 2rem;
  text-align: center;
}

.teacher .slide .share {
  position: absolute;
  top: 1rem;
  left: -10rem;
}

.teacher .slide:hover .share {
  left: 2rem;
}
.teacher .slide .share a {
  display: block;
  width: 4.5rem;
  height: 4.5rem;
  line-height: 4.5rem;
  border-radius: 0.5rem;
  margin-top: 1rem;
  font-size: 2rem;
  text-align: center;
  background-color: var(--white);
  color: var(--black);
}

.teacher .slide .share a:hover {
  background-color: var(--green);
}
/**Review*/
.review .slide {
  width: 35rem;
  border-radius: 0.5rem;
  background-color: var(--light-bg);
  padding: 2rem;
  margin-bottom: 4rem;
}
.review .slide p {
  color: var(--light-white);
  font-size: 1.6rem;
  line-height: 2;
}
.review .slide .user {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  margin-top: 1.5rem;
}
.review .slide .user img {
  width: 7rem;
  height: 7rem;
  border-radius: 50%;
  object-fit: cover;
}
.review .slide .user .user-info h3 {
  color: var(--white);
  font-size: 2rem;
  margin-bottom: 0.7rem;
}
.review .slide .user .user-info .stars i {
  color: var(--green);
  font-size: 1.5rem;
}
/**contact*/
.contact form,
.contact .image {
  flex: 1 1 40rem;
  gap: 1.5em;
}
.contact .image img {
  width: 100%;
}

.contact form .box {
  width: 100%;
  color: var(--white);
  background-color: var(--light-bg);
  font-size: 1.8rem;
  margin-top: 1rem;
  margin-bottom: 2rem;
  border-radius: 0.5rem;
  padding: 1.4rem;
}

.contact form label {
  font-size: 1.5rem;
  color: var(--light-white);
}
.contact form .radio label {
  font-size: 1.5rem;
  color: var(--light-white);
  margin-left: 0.5rem;
}
.contact form .radio input {
  appearance: none;
  height: 2rem;
  width: 2rem;
  background-color: var(--light-white);
  cursor: pointer;
  margin-left: 0.5rem;
}
.contact form .radio input:checked {
  border-radius: 5rem;
  background-color: var(--green);
}
.contact form .radio input#female:checked ~ label[for="female"],
.contact form .radio input#nonbinary:checked ~ label[for="nonbinary"],
.contact form .radio input#male:checked ~ label[for="male"] {
  color: var(--green);
}
.contact form .radio input#female,
.contact form .radio input#nonbinary {
  margin-right: 2rem;
}

/**Footer*/
.site-footer {
  background-color: var(--light-bg);
}
.site-footer .share {
  text-align: center;
}
.site-footer .share a {
  color: var(--white);
  background-color: var(--black);
  width: 4.5rem;
  height: 4.5rem;
  line-height: 4.5rem;
  border-radius: 50%;
  font-size: 2rem;
  margin: 0 3rem;
  text-align: center;
  display: inline-block;
}
.site-footer .share a:hover {
  background-color: var(--green);
}
.site-footer .credit {
  margin-top: 2.5rem;
  padding: 2.5rem 1.5rem 1.5rem;
  border-top: 0.1rem solid var(--light-white);
  font-size: 2rem;
  color: var(--light-white);
  text-align: center;
}

.site-footer .credit a {
  color: var(--green);
}

.site-footer .credit a:hover {
  color: var(--white);
}