@import url('https://fonts.googleapis.com/css2?family=Lato:wght@300&display=swap');

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

:root {
  --primary-color: #047aed;
  --secondary-color: #1c3fa8;
  --dark-color: #002240;
  --light-color: #f4f4f4;
  --success-color: #5cb85c;
  --error-color: #d9534f;
}

/*Let's C - Start*/

.Lets-C-heading{
  text-align: center;
  background: linear-gradient(to right top,  #4188ff, #649eff);
  padding-top: 50px;
  padding-bottom: 50px;
}



.Lets-C-p, .Aboutus-p{
  background: linear-gradient(
    to right bottom,
    rgba(255, 255, 255, 1),
    rgba(255, 255, 255, 0.2)
    );
    border-radius: 10px;
    padding: 40px;
    width: 50%;
    margin-left: 25%;
    
  
}

.contact-p{
  background: linear-gradient(
    to right bottom,
    rgba(100, 158, 255, 1),
    rgba(172, 203, 255, 0.2)
    );
    border-radius: 10px;
    padding: 40px;
    width: 75%;
    margin-left: 15%;
    
}

.container-lab{
  max-width: 1100px;
  margin: 0 auto;
  overflow: auto;
  padding: 0 40px;
}

.Lets-C-col{
  flex-basis: 31%;
  background: #fff3f3;
  border-radius: 10px;
  margin-bottom: 5%;
  padding: 20px 12px;
  box-sizing: border-box;
}

.Lets-C-col:hover{
  box-shadow: 0 0 20px 0px rgba(0,0,0,0.3);
}

@media(max-width: 1068px){
  .row{
    flex-direction: column;
    
  }
  .container-C{
    padding-bottom: 20px;
    width: 100%;
  }

  .Lets-C-page1{
    min-height: 100%;
    width: 100%;
  }

  .Lets-C-page2{
    min-height: 100%;
    width: 100%;
  }

  .Lets-C-page3{
    min-height: 100%;
    width: 100%;
  }

  .container-C{
    flex-direction: column;
    width: 100%;
    margin: 25px 20px;
  }
  .left-C1, .left-C2, .left-C3{
    width: 100%;
  }
   
  .right-C{
  width: 80%;
  margin:0;
  margin-top: -100px;
  }
}

.Lets-C-page1{
  min-height: 100vh;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(to right top,  #649eff, #78aaff);
}

.Lets-C-page2{
  min-height: 100vh;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(to right top,  #78aaff, #92bbff);
}

.Lets-C-page3{
  min-height: 100vh;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(to right top,  #92bbff, #accbff);
}

.container-C{
  width: 100%;
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  
}

.left-C1{
  width: 100%;
  height: 600px;
  background: url("Images/Practice problems.jpg") no-repeat center / cover;
border-radius: 8px;
}

.left-C2{
  width: 100%;
  height: 600px;
  background: url("Images/lab-problems.jpg") no-repeat center / cover;
border-radius: 8px;
}

.left-C3{
  width: 100%;
  height: 600px;
  background: url("Images/theory-problem.jpg") no-repeat center / cover;
border-radius: 8px;
}

.right-C{
  width: 50%;
  min-height: 400px;
  background-color: #2f3d3c;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 30px;
  border-radius: 8px;
  color: white;
  margin-left: -100px;
}

.right-C h1{
  font-size: 40px;
  font-weight: lighter;
}

.right-C p{
  margin: 20px 0;
  font-weight: 500;
  line-height: 25px;
}

.right-C a{
  text-decoration: none;
  text-transform: uppercase;
  background-color: white;
  color: black;
  padding: 20px 30px;
  display: inline-block;
  letter-spacing: 2px;
}

/*Let's C - End*/






.labdiv{
  text-decoration: none;
}
.questions{
  width: 100%;
  padding-top: 40px;
  padding-bottom: 10px;;
  background: linear-gradient(to right top,  #fddb27ff, #6cdbeb);
  display: flex;
  align-items: center;
  justify-content: center;
  
}



.container{
  width: 100%;
  max-width: 88rem;
  margin: 0 auto;
  padding: 2rem;
  background: linear-gradient(
    to right bottom,
    rgba(255, 255, 255, 0.9),
    rgba(255, 255, 255, 0.2)
    );
    
}

.send_but{
  border-radius: 10px;
}

.contactForm{
  border-radius: 10px;
}

.accordian-item{
  background: linear-gradient(
    to right bottom,
    rgba(255, 255, 255, 0.8),
    rgba(255, 255, 255, 0.3)
    );
  border-radius: .4rem;
  margin-top: 2rem;
  margin-bottom: 1rem;
  padding: 1rem;
  box-shadow: .5rem 2px .5rem rgba(0,0,0,.1);
}

.accordian-link{
  font-size: 1.6rem;
  color: rgba(255, 255, 255, .8);
  text-decoration: none;
  background-color: #6ba8ff;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}

.accordian-link i{
  color: #e7d5ff;
  padding: .5rem;

}

.accordian-link .ion-md-remove{
  display: none;
}

.answer{
  max-height: 0;
  
  overflow: hidden;
  position: relative;
  background: linear-gradient(
    to right bottom,
    rgba(255, 255, 255, 0.9),
    rgba(255, 255, 255, 0.2)
    );
  transition: max-height 650ms;
}

.answer::before{
  content: "";
  position: absolute;
  width: .6rem;
  height: 90%;
  background-color: chartreuse;
  top: 50%;
  left: 0;
  transform: translateY(-50%);
  
}


.answer p{
  color: black;
  font-size:1rem ;
  padding: 2rem;
}

.accordian-item:target .answer{
  max-height: 100rem;
}

.accordian-item:target .accordian-link .ion-md-add{
display: none;
}

.accordian-item:target .accordian-link .ion-md-remove{
  display: block;
  }

.contact{
  position: relative;
  min-height: 100vh;
  padding: 50px 100px;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  background: url("Images/contact-bg.jpg");
  background-size: cover;
  color: white;
}

.contact .content-contact{
  max-width: 800px;
  text-align: center;
}

.contact .content-contact h2{
  font-size: 36px;
  font-weight: 500;
  color: #fff;
}

.contact .content-contact p{
  
  font-weight: 300;
  color: #fff;
}

.container-contact{
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: 30px;
}

.container-contact .contactInfo{
  width: 50%;
  display: flex;
  flex-direction: column;
}

.container-contact .contactInfo .box{
  position: relative;
  padding: 20px 0;
  display: flex;
}

.container-contact .contactInfo .box .icon{
  min-width: 60px;
  height: 60px;
  color: black;
  background: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
  border-radius: 50%;
  font-size: 22px;
} 

.container-contact .contactInfo .box .text{
  display: flex;
  margin-left: 20px;
  font-size: 16px;
  flex-direction: column;
  font-weight: 300;
}

.container-contact .contactInfo .box .text h3{
  font-weight: 500;
  color: #42e7fd;
}

.contactForm{
  width: 40%;
  padding: 40px;
  background: white;
}

.contactForm h2{
  font-size: 30px;
  color: #333;
  font-weight: 500;
}

.contactForm .inputBox{
  position: relative;
  width: 100%;
  margin-top: 10px;

}



.contactForm .inputBox input,
.contactForm .inputBox textarea
{
  width: 100%;
  padding: 5px 0;
  font-size: 16px;
  margin: 10px 0;
  border: none;
  border-bottom: 2px solid #333;
  outline: none;
  resize: none;

}

.contactForm .inputBox span{
  position: absolute;
  left: 0;
  padding: 5px 0;
  font-size: 16px;
  margin: 10px 0;
  pointer-events: none;
  transition: 0.5s;
  color: black;
}

.contactForm .inputBox input:focus ~ span,
.contactForm .inputBox input:valid ~ span,
.contactForm .inputBox textarea:focus ~ span,
.contactForm .inputBox textarea:valid ~ span{
  color: #e91e63;
  font-size: 12px;
  transform: translateY(-25px);
}

.contactForm .inputBox input[type="submit"]{
  width: 100px;
  background: #00bcd4;
  color: #fff;
  border: none;
  cursor: pointer;
  padding: 10px;
  font-size: 18px;
}

@media (max-width: 1068px){
  .contact{
    padding: 50px;
  }
  .container-contact{
    flex-direction: column;
  }
  .container-contact .contactInfo{
    margin-bottom: 40px;
  }
  .container-contact .contactInfo,
  .contactForm{
    width: 100%;
  }
}


.labprobs-head{
  background-color: #047aed;

}

@media (max-width: 768px) {
  .grid,
  .labprobs-main .grid
  {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr;
  }
  .labprobs-head,
  .labprobs-sub-head
   {
    text-align: center;
  }

  .labprobs-head img,
  .labprobs-sub-head img{
   
    justify-self: center;
  }

  .labprobs-main .grid > *:first-child,
  .labprobs-main .grid > *:nth-child(2) {
    grid-column: 1;
  }
}

.labprobs-head img{
  width: 200px;
  justify-self: flex-end;
  
}

.labprobs-main .card > i{
  margin-right: 20px;
}

.labprobs-main .grid{
  padding: 30px;
  cursor: pointer;
}

@media (min-width: 1068px){
  .labprobs-main .grid > *:first-child{
    grid-column: 1 / span 3;
  }
  
  .labprobs-main .grid > *:nth-child(2){
    grid-column: 1 / span 2;
  }
}



.container {
  max-width: 1100px;
  margin: 0 auto;
  overflow: auto;
  padding: 0 40px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  justify-content: center;
  align-items: center;
  height: 100%;
}



.labprobs-sub-head img{
  width: 300px;
  justify-self: flex-end;
}


.header{
  background: url("Images/IIT-KGP.jpg");
  width: 100%;
  min-height: 100vh;
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
    position: relative;

}

.header-C{
  background: url("Images/c-header.jpg");
  width: 100%;
  min-height: 100vh;
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
    position: relative;
    margin-top: 0;


}



.header-About{
  background: url("Images/About-us.jpg");
  width: 100%;
  min-height: 100vh;
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
    position: relative;

}

.header-contact{
  background: url("Images/contact.jpg");
  width: 100%;
  min-height: 100vh;
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
    position: relative;

}


.text-box{
  width: 90%;
  color: black;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%);
  text-align: center;
}
.text-box h1{
  font-size: 62px;
}

.text-box p{
  margin: 10px 0 40px;
  font-size: 14px;
background-color:white;
opacity: 0.8;
border-radius: 5px;
}






nav{
  height: 10vh;
  background: black;

}

.nav-links{
  display: flex;
  list-style: none;
  width: 50%;
  height: 100%;
  justify-content: space-around;
  align-items: center;
  margin-left: auto;

}


.nav-links li a{
  text-decoration: none;
  font-size: 16px;
  color: white;
}



@media (max-width: 1068px){
  

  .logo-img{
    position: absolute;
    left: 10px;
    top: -35px;
    z-index: 2;
  }
  .text-box h1{
    font-size: 20px;
  }
.line1{
  width: 15px;
  height: 3px;
  background: white;
  margin: 5px;
}

.line2{
  width: 30px;
  height: 3px;
  background: white;
  margin: 5px;

}

.line3{
  width: 15px;
  height: 3px;
  background: white;
  margin: 5px;
  margin-left: 20px;
}

nav{
  position: relative;
}

.hamburger{
  position: absolute;
  cursor: pointer;
  right: 5%;
  top:50%;
  transform: translate(-5%, -50%);
z-index: 2;


}

  .nav-links{
    position: fixed;
    background: #5b78c7;
    height: 100vh;
    width: 100%;
    flex-direction: column;
z-index: 1;
    clip-path: circle(100px at 90% -15%);
    -webkit-clip-path: circle(100px at 90% -15%);
    transition: all 1s ease-out;
  }
  .nav-links.open{
    clip-path: circle(2200px at 90% -15%);
    -webkit-clip-path: circle(2200px at 90% -15%);
  }

  .nav-links li{
    opacity: 0;
  }
  .nav-links li a{
    font-size: 25px;
  }

  .nav-links li:nth-child(1){
    transition: all 0.5s ease 0.2s;
  }

  .nav-links li:nth-child(2){
    transition: all 0.5s ease 0.4s;
  }

  .nav-links li:nth-child(3){
    transition: all 0.5s ease 0.6s;
  }

  .nav-links li:nth-child(4){
    transition: all 0.5s ease 0.8s;
  }
  li.fade{
    opacity: 1;
  }

}





.logo-img{
  position: absolute;
  left: -40px;
  top: -35px;
}



h1{
  font-size: 36px;
  }



p{
  font-size: 14px;
  font-weight: 300;
  line-height: 22px;
  
}

.row{
  margin-top: 5%;
  display: flex;
  justify-content: space-between;
}



h3{
  
  font-weight: 600;
  margin: 10px 0;
}



@media(max-width: 1068px){
  .row{
    flex-direction: column;
    
  }
  .container{
    padding-bottom: 20px;
  }
}

.About-us{
  width: 100%;
  margin: auto;
  text-align: center;
  padding-top: 50px;
  background: linear-gradient(to right top,  #ff8c00, #ffba00);
}

.About-us-col{
  flex-basis: 50%;
  border-radius: 15px;
  margin-bottom: 30px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.About-us-col{
  width: 100%;
  display: block;
}

.layer{
  background: transparent;
  height: 100%;
  width: 100%;
  position: absolute;
  top: 0;
  left: 0;
  transition: 0.5s;
}

.layer:hover{
  background: rgba(250, 249, 249, 0.3);
}

.layer h3{
  width: 100%;
  font-weight: 500;
  color: #fff;
  font-size: 26px;
  bottom: 0;
  left: 50%;
  transform: translate(-50%);
  position: absolute;
  transition: 0.5s;
}

.layer:hover h3{
  bottom: 49%;
  opacity:1;
}

.contact-me{
  width: 100%;

  background-color: #adeecf;

    padding-top: 100px;
    padding-bottom: 100px;
}
.bottom-container{
  background-color: #ffc2b4;
  padding-bottom: 50px;
  padding-top: 40px;
}

/* Three image containers (use 25% for four, and 50% for two, etc) */
.column, .column1, .column2, .column3 {
  float: right;
  width: 33.33%;
  padding: 5px;
}

/* Clear floats after image containers */
.row::after {
  content: "";
  clear: both;
  display: table;

}


.column1{
  position: relative;
  top: -95px;
}

.column2{
  position: relative;
  top: 53px;

}
::selection{
  background-color: #8E44AD;
  color: white;
}

.column3{
  position: relative;
  top: 30px;
}
.images {
  border: 1px solid black;
  border-radius: 4px;
  padding: 2px;
  width: 150px;


  margin-left: auto;
  margin-right: auto;
  width: 50%;
}
footer{
  position: relative;
  bottom: 0;
  width: 100%;
  background: #111;
color: white;
}

.main-content{
  display: flex;
}
.main-content .box{
  flex-basis: 50%;
  padding: 10px 20px;
}

.box .content{
  margin: 20px 0 0 0;
}


.left .content p{
text-align: justify;
}

.left .content .social{
  margin: 20px 0 0 0;
  text-align: center;
}

.left .content .social a{
  padding: 0 4px;
}

.left .content .social a span{
  height: 40px;
  width: 40px;
  background: #1a1a1a;
  line-height: 40px;
  text-align: center;
  font-size: 18px;
  border-radius: 5px;
  transition: 0.3s;
}
.center .content .fas{
  font-size: 1.4375rem;
  background: #1a1a1a;
  height: 45px;
  width: 45px;
  line-height: 45px;
  text-align: center;
  border-radius: 50%;
  transition: 0.3s;
  cursor: pointer;
}


.center .content .fas:hover{
  background: #f12020;
}
.left .content .social a span:hover{
  background: #f12020;
}

.center .content .text{
  font-size: 1.0625rem;
  font-weight: 500;
  padding-left: 10px;
}

.center .content .phone{
  margin: 10px 0;
}

.right form .text{
  font-size: 1.0625rem;
  margin-bottom: 2px;
  color: #656565;
}

.right form .msg{
  margin-top: 10px;
}



.right form input, .right form textarea{
  width:100%;
  font-size: 1.0625rem;
  background: #151515;
  padding-left: 10px;
  border: 1px solid #222222;
}

.right form input:focus, .right form textarea:focus {
  outline-color: #3498db;
}
.right form input{
  height:35px;
}

.right form .btun{
  margin-top: 10px;

}

.right form .btun button{
  height: 40px;
  width: 100%;
  border: none;
  outline: none;
  background: powderblue;
  font-size: 1.0625 rem;
  cursor: pointer;

}

.right form .btun button:hover{
  background: #047aed;
}

@media screen and (max-width: 1068px){
  footer{
    position:relative;
    bottom:0;

  }
  .main-content{
    flex-wrap: wrap;
    flex-direction: column;
  }
  .main-content .box{
    margin: 5px 0;
  }

  
}









/* Margin */
.my-1 {
  margin: 1rem 0;
}

.my-2 {
  margin: 1.5rem 0;
}

.my-3 {
  margin: 2rem 0;
}

.my-4 {
  margin: 3rem 0;
}

.my-5 {
  margin: 4rem 0;
}

.m-1 {
  margin: 1rem;
}

.m-2 {
  margin: 1.5rem;
}

.m-3 {
  margin: 2rem;
}

.m-4 {
  margin: 3rem;
}

.m-5 {
  margin: 4rem;
}

/* Padding */
.py-1 {
  padding: 1rem 0;
}

.py-2 {
  padding: 1.5rem 0;
}

.py-3 {
  padding: 2rem 0;
}

.py-4 {
  padding: 3rem 0;
}

.py-5 {
  padding: 4rem 0;
}

.p-1 {
  padding: 1rem;
}

.p-2 {
  padding: 1.5rem;
}

.p-3 {
  padding: 2rem;
}

.p-4 {
  padding: 3rem;
}

.p-5 {
  padding: 4rem;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  overflow: auto;
  padding: 0 40px;
}

.card {
  background-color: #fff;
  color: #333;
  border-radius: 10px;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.2);
  padding: 20px;
  margin: 10px;
}

.btn {
  display: inline-block;
  padding: 10px 30px;
  cursor: pointer;
  background: var(--primary-color);
  color: #fff;
  border: none;
  border-radius: 5px;
}

.btn-outline {
  background-color: transparent;
  border: 1px #fff solid;
}

.btn:hover {
  transform: scale(0.98);
}

/* Backgrounds & colored buttons */
.bg-primary,
.btn-primary {
  background-color: var(--primary-color);
  color: #fff;
}

.bg-secondary,
.btn-secondary {
  background-color: var(--secondary-color);
  color: #fff;
}

.bg-dark,
.btn-dark {
  background-color: var(--dark-color);
  color: #fff;
}

.bg-light,
.btn-light {
  background-color: var(--light-color);
  color: #333;
}

.bg-primary a,
.btn-primary a,
.bg-secondary a,
.btn-secondary a,
.bg-dark a,
.btn-dark a {
  color: #fff;
}

/* Text colors */
.text-primary {
  color: var(--primary-color);
}

.text-secondary {
  color: var(--secondary-color);
}

.text-dark {
  color: var(--dark-color);
}

.text-light {
  color: var(--light-color);
}

/* Text sizes */
.lead {
  font-size: 20px;
}

.sm {
  font-size: 1rem;
}

.md {
  font-size: 2rem;
}

.lg {
  font-size: 3rem;
}

.xl {
  font-size: 4rem;
}

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

/* Alert */
.alert {
  background-color: var(--light-color);
  padding: 10px 20px;
  font-weight: bold;
  margin: 15px 0;
}

.alert i {
  margin-right: 10px;
}

.alert-success {
  background-color: var(--success-color);
  color: #fff;
}

.alert-error {
  background-color: var(--error-color);
  color: #fff;
}

.flex {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100%;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  justify-content: center;
  align-items: center;
  height: 100%;
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}