/*the :root pesudo-class represents the html element */
:root{
--main-blue:#4980ff;
--dark-blue: #28293E;
--light-grey:#EFEFEF;
--grey:#5c5c5c;

}



body{
    margin: 0;
    padding: 0;
    text-align: center;
    font-family: "lato" , sans-serif;
}
.blue-bg{
    background-color: var(--dark-blue);
    color: white;
}
.container{
    max-width: 940px;
    margin: auto;
}

section .section-tittle{
    font-size: 48px;
    font-weight: bold;
    letter-spacing: -1px;
    margin-bottom: 18px;
    margin-top: 0;

}
section p {
   font-size: 20px;
   line-height : 32px;
   color : var(--grey);
}


header{
    
    text-align: center;
    padding: 20px 0;
    
    
}
ul{
    list-style-type: none;
    
}
header li{
    display: inline;
    
    
}

header a{
    color: white;
    text-decoration: none;
    margin: 0 22px;
}
section img#Profile{
    width: 263px;
    height: 263px;
    border-radius: 270px;
    
}
section#hero {
    padding-top: 68px;
    padding-bottom: 58px;
   
}
section#hero h1{
    font-size: 72px;
    font-weight: bold;
    margin-top: 15px;
    margin-bottom: 0;
    letter-spacing: -2px;


}
section#hero h2{
    font-size: 20px;
    font-weight: normal;
    color: var(--main-blue);
    margin-bottom: 20px;
    letter-spacing: 3px;

}
section#hero P{
    
    
    max-width: 465px;
    margin: auto;
    margin-bottom: 20px;
    color: white;
    
    
}
section#hero ul{
    padding: 0;
    margin: 0 6px;
}
section#hero li {
    display: inline;
    
}
section#hero li img{
    width: 37px;
    height: 37px;
}
.button{
    background-color: var(--main-blue);
    padding: 12px 4px;
    border-radius: 6px;
}
.button:hover{
    background-color: purple;
}
video{
    max-width: 100%;
    height: auto;
}
section{
    padding: 40px 0;
}
hr{
    width: 70px;
    height: 8px;
    background-color:var(--main-blue);
    margin: 16px auto 32px auto ;
    border: none;
}
section#skillset span  {
    display: inline-block;
    background-color: var(--light-grey);
    width: 146px;
    height: 40px;
    border-radius: 72px;
    margin: 8px;
    line-height: 40px;
    font-size: 15px;
    letter-spacing: -1px;
}
section#skillset .skills{

    width: 500px;
    margin: auto;
}
section#experience article{
    border-bottom: 1px solid #d9d9d9 ;
    padding: 30px 0 ;
}

section#experience article:last-of-type{
    border-bottom: none;
}
section#experience article:first-of-type{
    padding-top: 0;
}
section#experience article h3{
    color: var(--grey);
    font-size: 20px;
    margin-top: 0;
    margin-bottom: 10px;
}
section#experience article p{
    margin: 0;
}
section#contact{
    background-color: var(--light-grey);

}
section#contact a{
    display: block;
    text-decoration: none;
    color: black;
    font-size: 18px;
}
section#contact a img{
    vertical-align: middle;
    margin-right: 12px;
}
footer{
    background-color: var(--light-grey);
    font-size: 16px;
    
}
footer .container{
    border-top: 1px solid black;
    padding: 24px 0;

}
.skill-buttons {
    display: grid;
    grid-template-columns: repeat(3, auto);
    gap: 20px;
    justify-content: center;
    margin-top: 25px;
  }
  
  .skill-buttons button {
    padding: 12px 30px;
    background: #f1f1f1;
    border: none;
    border-radius: 30px;
    font-size: 16px;
    cursor: pointer;
    font-weight: 500;
    transition: 0.25s ease;
  }
  
  /* Hover effect */
  .skill-buttons button:hover {
    background: #e6e6e6;
    transform: translateY(-2px);
  }
  
  /* Active/selected state */
  .skill-buttons button.active {
    background: black;
    color: white;
  }