@import url('https://fonts.googleapis.com/css2?family=Mukta:wght@300;400;500;700;800&family=Poppins:wght@300;400;500;600;700&display=swap');

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Poppins', sans-serif;
}

html,
body {
  scroll-behavior: smooth;
}

:root {
  --text: rgb(0, 0, 0);
  --body-background: rgb(245, 248, 246);
  --main-color: rgb(5, 100, 87);
  --text-white: rgb(247, 247, 247);
}

/* --------------------loader---------------------------- */

#loader {
  border: 4px solid #fff;
  border-radius: 50%;
  border-top: 4px solid var(--main-color);
  width: 70px;
  height: 70px;
  animation: spin 1s linear infinite;
  -webkit-animation: spin 1s linear infinite;
}

@keyframes spin {
  100% {
    transform: rotate(360deg);
    -webkit-transform: rotate(360deg);
    -moz-transform: rotate(360deg);
    -ms-transform: rotate(360deg);
    -o-transform: rotate(360deg);
  }
}

.center {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  margin: auto;
  z-index: 20;
}

/* --------------------header---------------------------- */

#header {
  width: 100%;
  height: 100vh;
  background-image: url(image/transparent-1.png);
  background-repeat: no-repeat;
  background-size: contain;
  background-position: right 1rem top 0rem;
  padding: 0;
  margin: 0;
  position: relative;
}

.container {
  padding: 10px 10%;
  display: block;
}

nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}

.logo {
  width: 300px;
  cursor: pointer;
}

nav ul li {
  display: inline-block;
  list-style: none;
  margin: 10px 20px;
}

nav ul li a {
  color: var(--text);
  text-decoration: none;
  position: relative;
}

nav ul li a h3 {
  font-family: 'Mukta', sans-serif;
}

nav ul li a::after {
  content: ' ';
  width: 0;
  height: 2.7px;
  background: var(--main-color);
  position: absolute;
  left: 50%;
  bottom: 0;
  transition: 0.5s;
  -webkit-transition: 0.5s;
  -moz-transition: 0.5s;
  -ms-transition: 0.5s;
  -o-transition: 0.5s;
}

nav .bi {
  display: none;
}

nav ul li a:hover::after {
  width: 100%;
  left: 0;
}

.header-text {
  margin-top: 20%;
  font-size: 30px;
}

.header-text h1 {
  font-size: 60px;
  margin-top: 20px;
}

.header-text h1 span {
  color: var(--main-color);
}

.header-bottom-content {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 50px;
}

.header-bottom-content div {
  background: transparent;
  display: inline-block;
  padding: 25px 70px;
  border-radius: 50px;
  -webkit-border-radius: 50px;
  -moz-border-radius: 50px;
  -ms-border-radius: 50px;
  -o-border-radius: 50px;
  cursor: pointer;
}

.header-bottom-content div:nth-child(1) {
  background: var(--main-color);
  border: 2px solid var(--main-color);
}

.header-bottom-content div:nth-child(2) {
  border: 2px solid var(--main-color);
}

.header-bottom-content div:nth-child(1) a {
  color: var(--text-white);
}

.header-bottom-content div:nth-child(1):hover {
  background: transparent;
}

.header-bottom-content div:nth-child(1):hover a {
  color: var(--text);
}

.header-bottom-content div a {
  text-decoration: none;
  color: var(--text);
  font-size: 1.2rem;
  font-family: 'Mukta', sans-serif;
}

.header-bottom-content div:hover a {
  color: var(--text-white);
}

.header-bottom-content div:hover {
  background: var(--main-color);
}

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

#about {
  padding: 80px 0;
  color: var(--text);
  max-width: 100%;
}

.row {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
}

.about-col-1 {
  flex-basis: 35%;
}

.about-col-1 img {
  width: 100%;
  border-radius: 15px;
  -webkit-border-radius: 15px;
  -moz-border-radius: 15px;
  -ms-border-radius: 15px;
  -o-border-radius: 15px;
}

.about-col-2 {
  flex-basis: 60%;
}

.sub-title {
  font-size: 50px;
  color: var(--text);
}

.tab-titles {
  display: flex;
  margin: 20px 0 40px;
}

.tab-links {
  margin-right: 50px;
  font-size: 17px;
  font-weight: bold;
  cursor: pointer;
  position: relative;
}

.tab-links::after {
  content: '';
  width: 0;
  height: 3px;
  background: var(--main-color);
  position: absolute;
  left: 0;
  bottom: -5px;
  transition: 0.2s;
  -webkit-transition: 0.2s;
  -moz-transition: 0.2s;
  -ms-transition: 0.2s;
  -o-transition: 0.2s;
}

.tab-links.active-link::after {
  width: 50%;
}

.tab-contents ul li {
  list-style: none;
  margin: 30px 0;
}

.tab-contents ul li span {
  color: var(--main-color);
  font-size: 14px;
  font-weight: bold;
}

.tab-contents {
  display: none;
}

.tab-contents.active-tab {
  display: block;
}

/* -----------------Portfolio-------------- */

#portfolio {
  padding: 50px 0;
}

.work-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  grid-gap: 40px;
  margin-top: 50px;
}

.work {
  border-radius: 10px;
  -webkit-border-radius: 10px;
  -moz-border-radius: 10px;
  -ms-border-radius: 10px;
  -o-border-radius: 10px;
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.work img {
  width: 100%;
  border-radius: 10px;
  -webkit-border-radius: 10px;
  -moz-border-radius: 10px;
  -ms-border-radius: 10px;
  -o-border-radius: 10px;
  display: block;
  min-height: 400px;
  object-fit: cover;
  transition: transform 0.5s;
  -webkit-transition: transform 0.5s;
  -moz-transition: transform 0.5s;
  -ms-transition: transform 0.5s;
  -o-transition: transform 0.5s;
}

.layer {
  width: 100%;
  height: 0;
  background: linear-gradient(rgb(0, 0, 0, 0.6), var(--main-color));
  border-radius: 10px;
  -webkit-border-radius: 10px;
  -moz-border-radius: 10px;
  -ms-border-radius: 10px;
  -o-border-radius: 10px;
  position: absolute;
  left: 0;
  bottom: 0;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  padding: 0 40px;
  text-align: center;
  color: var(--text-white);
  font-size: 14px;
  transition: height 0.5s;
  -webkit-transition: height 0.5s;
  -moz-transition: height 0.5s;
  -ms-transition: height 0.5s;
  -o-transition: height 0.5s;
}

.layer h3 {
  font-weight: 500;
  margin-bottom: 20px;
}

.layer a {
  margin-top: 20px;
  color: var(--main-color);
  text-decoration: none;
  font-size: 18px;
  line-height: 60px;
  background: #fff;
  height: 60px;
  width: 60px;
  border-radius: 50%;
  -webkit-border-radius: 50%;
  -moz-border-radius: 50%;
  -ms-border-radius: 50%;
  -o-border-radius: 50%;
  text-align: center;
}

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

.work:hover .layer {
  height: 100%;
}

.btn {
  display: block;
  margin: 50px auto;
  width: fit-content;
  border: 1px solid var(--main-color);
  padding: 14px 50px;
  border-radius: 6px;
  -webkit-border-radius: 6px;
  -moz-border-radius: 6px;
  -ms-border-radius: 6px;
  -o-border-radius: 6px;
  text-decoration: none;
  color: var(--text);
  transition: background 0.5s;
  -webkit-transition: background 0.5s;
  -moz-transition: background 0.5s;
  -ms-transition: background 0.5s;
  -o-transition: background 0.5s;
}

.btn:hover {
  background: var(--main-color);
  color: var(--text-white);
}

/*-------------------Contact ----------------------*/

.contact-left {
  flex-basis: 35%;
}

.contact-right {
  flex-basis: 60%;
}

.contact-left p {
  margin-top: 30px;
}

.contact-left p i {
  color: var(--main-color);
  margin-right: 15px;
  font-size: 25px;
}

.social-icons {
  margin-top: 30px;
}

.social-icons a {
  text-decoration: none;
  font-size: 30px;
  margin-right: 15px;
  color: #ababab;
  display: inline-block;
  transition: transform 0.5s;
  -webkit-transition: transform 0.5s;
  -moz-transition: transform 0.5s;
  -ms-transition: transform 0.5s;
  -o-transition: transform 0.5s;
}

.social-icons a:hover {
  color: var(--main-color);
  transform: translateY(-5px);
  -webkit-transform: translateY(-5px);
  -moz-transform: translateY(-5px);
  -ms-transform: translateY(-5px);
  -o-transform: translateY(-5px);
}

.btn.btn2 {
  display: inline-block;
  background: var(--main-color);
  color: var(--text-white);
}

.contact-right form {
  width: 100%;
}

form input,
form textarea {
  width: 100%;
  border: 0;
  outline: none;
  background: rgb(214, 224, 221);
  padding: 15px;
  margin: 15px 0;
  color: var(--text);
  font-size: 18px;
  border-radius: 6px;
  -webkit-border-radius: 6px;
  -moz-border-radius: 6px;
  -ms-border-radius: 6px;
  -o-border-radius: 6px;
}

form .btn2 {
  padding: 14px 60px;
  font-size: 18px;
  margin-top: 20px;
  cursor: pointer;
}

.copyright {
  width: 100%;
  text-align: center;
  padding: 25px 0;
  background: rgb(214, 224, 221);
  font-weight: 500;
  margin-top: 20px;
}

.copyright i {
  color: var(--main-color);
}

#msg {
  color: green;
  display: block;
  margin-top: -10px;
  font-weight: 600;
}

/*-------------------style for small screens ----------------------*/

@media (max-width: 1350px) {
  #header {
    background-image: url(image/My\ project-1.png);
    background-position: right -10rem top 6rem;
    background-size: contain;
    max-height: 80vh;
  }

  .logo {
    width: 200px;
  }

  nav ul li {
    margin: 0 5px;
  }
}

@media only screen and (max-width: 680px) {
  .container {
    padding-left: 5%;
  }

  .header-text {
    margin-top: 25%;
    font-size: 16px;
  }

  .header-text h1 {
    font-size: 30px;
  }

  .logo {
    width: 220px;
    padding-right: 15px;
  }

  .header-bottom-content {
    margin-top: 25px;
  }

  .header-bottom-content div {
    padding: 20px 45px;
  }

  nav .bi {
    display: block;
    font-size: 35px;
    cursor: pointer;
  }

  nav ul {
    background: var(--main-color);
    position: fixed;
    top: 0;
    right: -200px;
    width: 190px;
    height: 100vh;
    padding-top: 50px;
    z-index: 10;
    transition: right 0.5s;
    -webkit-transition: right 0.5s;
    -moz-transition: right 0.5s;
    -ms-transition: right 0.5s;
    -o-transition: right 0.5s;
  }

  nav ul li {
    display: block;
    margin: 25px;
  }

  nav ul li a {
    color: var(--text-white);
  }

  nav ul .bi {
    position: absolute;
    top: 25px;
    left: 25px;
    cursor: pointer;
    color: var(--text-white);
  }

  nav ul .times {
    top: 10px;
  }

  .sub-title {
    font-size: 40px;
  }

  .about-col-1,
  .about-col-2 {
    flex-basis: 100%;
  }

  .about-col-1 {
    margin-bottom: 30px;
  }

  .about-col-2 {
    font-size: 14px;
  }

  .tab-links {
    font-size: 16px;
    margin-right: 20px;
  }

  .contact-left,
  .contact-right {
    flex-basis: 100%;
  }

  .copyright {
    font-size: 12px;
  }
}

@media (max-width: 450px) {
  .header-text h1 span {
    margin-right: 20%;
  }
}