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


  :root {
    --gradient-one: #ffffff;
    --gradient-two: #d6f0f9;
    --gradient-three: #a8d8f0;
    --gradient-four: #5ba4d0;
    --gradient-five: #1e5a99;
    --gradient-six: #0a2a66;
    }

    body{
        color:whitesmoke;
        background-color: darkblue;
        overflow:hidden;
        font-family: "Roboto", sans-serif;

    }

    .main{
        background: 
        url("images/snowy.gif") repeat, 
        linear-gradient(
          to top,
          /* var(--gradient-one) 5%,   
          var(--gradient-two) 20%,  
          var(--gradient-three) 35%,
          var(--gradient-four) 55%, 
          var(--gradient-five) 80%, 
          var(--gradient-six) 100%  */
          var(--gradient-one) 0%,   
          var(--gradient-two) 10%,  
          var(--gradient-three) 30%,
          var(--gradient-four) 45%, 
          var(--gradient-five) 75%, 
          var(--gradient-six) 100% 
        );
      background-size: cover, cover; 
      background-position: center, center;  
        min-height: 100vh;
        transition: 0.3 ease;
        pointer-events: auto;
    }

    main.active{
        filter: blur(15px);
        pointer-events: none;
    }

    .container{
        display: flex;
        height:100vh;
        width:200%;
    }

    .header{
        position: fixed;
        width:100%;
        left:0;
        top:0;
        padding:20px 10%;
        display: flex;
        justify-content: flex-end;
        align-items: center;
        z-index: 100;
    }

    .logo img{
        width:50px;
    }

    .navbar a{
        color:whitesmoke;
        font-size: 25px;
        text-decoration: none;
        margin-left: 35px;
        transition: 0.3s;
        filter: drop-shadow(0 0 5px black); 
    }

    
    .navbar a:hover , .navbar a.active{
        color:rgb(3, 3, 50);
    }

    .navbar a:nth-child(3) {
        font-weight: bold;
        background-color: blue;
        padding: .75rem 1rem;
        border-radius: 3px;
      }

      .navbar a:nth-child(3).active {
        background-color: var(--gradient-six);
      }


      @keyframes HeartBeat {
        0% {
          transform: scale(1);
        }
        25% {
          transform: scale(1.05);
        }
        50% {
          transform: scale(1);
        }
        75% {
          transform: scale(1.05);
        }
        100% {
          transform: scale(1);
        }
      }
      
      
      .heartbeat {
        animation: HeartBeat 2s ease-in-out infinite;
        display: inline-block;
      }
      



    .quiz{
        position: relative;
        left: -50%;
        display: flex;
        height:100vh;
        width:100%;
        justify-content: center;
        align-items: center;
    }

    .quiz-content{
        max-width: 800px;
        align-items: center;
        display: flex;
        flex-direction: column;
    }

    .quiz-content .start-btn{
        width:190px;
        height:55px;
        background-color: #0a2a66;
        border:2px solid #0a2a66;
        border-radius: 6px;
        box-shadow: 0 0 10px #0a2a66;
        font-size: 18px;
        color: whitesmoke;
        letter-spacing: 1px;
        font-weight: 600;
        cursor: pointer;
        transition: 0.5s;
    }

    .quiz-content .start-btn:hover{
        background: transparent;
        color: #0a2a66;
    }


    /* pop up section */

    .popup-info{
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%) scale(0.9);
        width:500px;
        border-radius: 6px;
        background-color: var(--gradient-three);
        padding: 10px 25px;
        opacity: 0;
        pointer-events: none;
        transition: 0.3s ease;
    }

    .popup-info.active{
        opacity: 1;
        pointer-events: auto;
        transform: translate(-50%, -50%) scale(1);

    }

    .popup-info h2{
        font-size: 50px;
        color: black;
    }

    .popup-info .info{
        font-size: 16px;
        color: black;
        font-weight: 400;
        margin:5px 0px 15px 0px; 
    }


    .popup-info .btn-group{
        display: flex;
        justify-content: space-between;
        align-items: center;
        border-top: solid 1px lightcyan;
        margin-top: 10px;
        padding:15px 0 7px;
    }



    .popup-info .btn-group .info-btn{
        display: inline-flex;
        justify-content: center;
        align-items: center;
        width:130px;
        height:45px;
        background-color: var(--gradient-five);
        border: solid 2px var(--gradient-five);
        border-radius: 6px;
        text-decoration: none;
        font-size: 16px;
        font-weight:600;
        color:white;
        box-shadow: 0 0 10px rgba(0, 0, 0, 0.1 );
        cursor: pointer;
        transition: 0.5s;
    }

    .popup-info .btn-group .info-btn:nth-child(1){
        background-color: transparent;
        color: var(--gradient-five);
    }

    .popup-info .btn-group .info-btn:nth-child(1):hover{
        background-color: var(--gradient-five);
        color:white;
    }

    .popup-info .btn-group .info-btn:nth-child(2):hover{
        background-color: transparent;
        border-color:var(--gradient-five);
        color: var(--gradient-five);
    }

    .quiz-section{
        position: relative;
        width:100%; 
        /* background-color: lightblue; */
        background: 
        linear-gradient(
          to top,
          var(--gradient-one) 5%,   
          var(--gradient-two) 20%,  
          var(--gradient-three) 35%,
          var(--gradient-four) 55%, 
          var(--gradient-five) 80%, 
          var(--gradient-six) 100% 
        );
        left: -50%;
        /* left:0; */
        display: flex;
        align-items: center;
        justify-content: center;
        transition: .8s ease-in-out;
        transition-delay: 0.25s;
        z-index: 100;
    }

    .quiz-section.active{
        left:0;
    }

    .quiz-section .quiz-box{
        position: relative;
        width: 500px;
        border: solid 2px var(--gradient-six);
        border-radius: 6px;
        display: flex;
        flex-direction: column;
        padding: 20px 30px;
        opacity: 0;
        pointer-events: none;
        transform: scale(0.9);
        transition: 0.3s ease;
        transition-delay: 0s;
    }

    .quiz-section .quiz-box.active{
        opacity: 1;
        pointer-events: auto;
        transform: scale(1);
        transition: 1s ease;
        transition-delay: 1s;

    }

    .quiz-box h1{
        font-size: 32px;
        text-align: center;
        background: linear-gradient(45deg, transparent, var(--gradient-six), transparent);
        border-radius: 6px;
    }

    .quiz-box .quiz-header{
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 20px 0; 
        border-bottom: solid 2px var(--gradient-six);
        margin-bottom: 30px;
    }

    .quiz-header span{
        font-size: 18px;
        font-weight: 500;
    }

    .quiz-header .header-score{
         background-color: var(--gradient-six);
         border-radius: 3px;
         padding: 7px;
    }

    .quiz-box .question-text{
        font-size: 24px;
        font-weight: 600;
    }

    .option-list .option{
        width: 100%;
        padding: 12px;
        background-color: transparent;
        border: solid 2px rgba(0, 0, 0, 0.2);
        font-size: 17px;
        border-radius: 3px;
        margin:15px 0;
        cursor: pointer;
        transition: ease-in 0.3s;
    }

    .option-list .option:hover{
        background-color: rgba(255, 255, 255, 0.1 );
        border-color: rgba(255, 255, 255, 0.1 ) ;
    }

    .option-list .option.correct{
        background-color: transparent;
        color:#00a63d;
        border-color: #00a63d;
    }

    .option-list .option.incorrect{
        background-color: transparent;
        color:#a60045;
        border-color: #a60045;
    }

    .option-list .option.disabled{
        pointer-events:none;
    }

    .option-list .fill-input{
        margin-top:1rem;
        width: 250px;
        height:45px;
        padding-inline:0.5rem;
        font-size: 18px;
        background-color: transparent;
        border-radius: 2px;
        border:solid var(--gradient-six) 1px;
    }

    .option-list .fill-input:focus {
        outline: none;
        box-shadow: 0 0 5px rgba(92, 135, 255, 0.5);      }

    .quiz-box .quiz-footer{
        display: flex;
        justify-content: space-between;
        align-items: center;
        border-top: 2px solid var(--gradient-six);
        padding-top: 20px;
        margin-top: 25px;
    }

    .quiz-footer .question-total{
        font-size: 16px;
        font-weight: 600;
        color: var(--gradient-five);
    }

    .quiz-footer .next-btn{
        width:100px;
        height:45px;
        background-color: rgba(255, 255, 255, 0.1 );
        border:rgba(255, 255, 255, 0.1 );
        outline:none;
        border-radius: 6px;
        font-size: 16px;
        color: rgba(255, 255, 255, 0.3 );
        font-weight: 600;
        cursor: pointer;
        pointer-events: none;  
        transition: 0.5s;
    }


    .quiz-footer .next-btn.active{
        pointer-events: auto;
        background-color: #1e5a99;
        border-color:#1e5a99;
        color:white;
    }

    .quiz-footer .next-btn.active:hover{
        background-color: var(--gradient-six);
        border-color: var(--gradient-six);
    }

    .quiz-section .result-box {
        position: absolute;
        top:50%;
        left:50%;
        transform:translate(-50%, -50%) scale(0.9);
        width:500px;
        background-color: transparent; 
        border: solid 2px #0a2a66;
        border-radius: 6px;
        padding:20px;
        display: flex;
        flex-direction: column;
        align-items: center;
        opacity: 0;
        pointer-events: none;
        transition: 0.3s ease;
    }

    .quiz-section .result-box.active{
        opacity:1;
        pointer-events: auto;
        transform:translate(-50%, -50%) scale(1);

    }

    .result-box h2 {
        font-size: 52px;
    }

    .result-box .percentage-container {
        width: 300px;
        display: flex;
        flex-direction: column;
        align-items: center;
        margin:20px 0 40px;
    }

    .percentage-container .circular-progress {
        position: relative;
        width:250px;
        height:250px;
        border-radius: 50%;
        display:flex;
        justify-content: center;
        align-items: center;
        
    }

    .percentage-container .circular-progress::before {
        content: '';
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        width: 210px;
        height: 210px;
        background-color: var(--gradient-four);
        border-radius: 50%;
    }



    .circular-progress .progress-value{
        font-size:45px;
        font-weight:600;
        position: relative;
    }

    .percentage-container .score-text {
        font-size: 26px;
        font-weight: 600;
        margin-top: 20px;
    }

    .result-box .buttons{
        display: flex;
    }

    .buttons button{
        width: 130px;
        height: 47px;
        background-color: #0a2a66;
        border: solid 2px #0a2a66;
        outline:none;
        border-radius: 6px;
        font-size: 16px;
        color:white;
        margin:0 20px;
        cursor: pointer;
        transition: 0.5s;
    }

    .buttons button:nth-child(1):hover , #getCredentialsBtn:hover:hover{
        background-color: #5ba4d0;
        border-color:#5ba4d0;
    }

    .buttons button:nth-child(2){
        background-color: transparent;
        color:#1e5a99;
    }

    .buttons button:nth-child(2):hover {
        background-color: #0a2a66;
        color:white;
    }

    

    .credentials-popup {
        display: none;
        position: fixed;
        top: 0; left: 0;
        width: 100%; height: 100%;
        background-color: rgba(0, 0, 0, 0.5);
        justify-content: center;
        align-items: center;
        z-index: 999;
    }
    
    .credentials-popup.active {
        display: flex;
    }
    
    .popup-content {
        background: var(--gradient-two);
        color:var(--gradient-six);
        padding: 20px 30px;
        border-radius: 8px;
        position: relative;
        text-align: center;
        width: 90%;
        max-width: 400px;
    }
    .popup-content h2 {
        margin-bottom:0.5rem;
    }

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

    .user-and-pass{
        padding: 1rem;
        border:solid black 1px;
        margin-top:1.5rem;
        border-radius: 3px;
    }

    .user-and-pass p{
        line-height: 1.25;
    }
    
    .close-popup {
        position: absolute;
        top: 10px; right: 15px;
        font-size: 20px;
        cursor: pointer;
    }
    
    .close-popup:hover{
        opacity: 50%;
    }