html, body{
    margin: 0;
    padding: 0;
    overflow-x: hidden;
    box-sizing: border-box;
}

body {
    font-family: 'Open Sans';
    line-height: 1.6;
    color: rgba(255,255,255,0.85);
    background: #0a0c12;
    padding-top: 2%;
}


#background {
    position: fixed;
    top: 50%;
    left: 50%;
    width: 110vw;
    transform: translate(-50%, -50%);
    z-index: -1;
}


#main-container {
    position: relative;
    z-index: 1;
}

.section strong {
    color:#b0c4de;
    font-size: clamp(1rem, 3vw, 1.5rem);
}


h1 {
    position: relative;
    left: 50%;
    transform: translate(-50%, 30%);
    width: fit-content;
    font-size: 3rem;
    background: linear-gradient(45deg, #7a8fa3, #b0c4de);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: 0 0 15px rgb(206, 230, 255);
}


.section {
    width: 55%;
    margin: 100px auto;
    padding: 2.5rem;
    font-size: clamp(0.8rem, 2.5vw, 1.2rem);
    background: rgba(0, 0, 0, 0.35);
    border: 1px solid rgba(100, 120, 150, 0.3);
    backdrop-filter: blur(8px);
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.23, 1, 0.32, 1);
    box-shadow: 0 8px 32px rgba(100, 120, 150, 0.822);
}

.section:nth-child(3) {
    margin-left: 25%;
}
.section:nth-child(4) {
    margin-top: -8%;
    margin-right: 25%;
}
.section:nth-child(5) {
    margin-top: -3%;
    margin-left: 25%;
}
.section:nth-child(6) {
    margin-right: 18%;
}

.section.active {
    opacity: 1;
    transform: translateY(0);
}



.section h2 {
    color: #9ab3c5;
    font-size: 2rem;
    margin-bottom: 1.5rem;
    border-left: 3px solid #4a6072;
    padding-left: 1rem;
}

.Row {
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    width: 100%;
}


p {
    margin: 1rem 0;
    text-indent: 0px;
}

ul {
    padding-left: 1.5rem;
}

ul li {
    list-style-type: "✵"; 
    padding-left: 0.5rem;
    margin-bottom: 0.8rem;
}


a{
    color: white;
    text-decoration: none;
    font-size: 2rem;
    transition: all 0.3s ease;
}

a:hover {
    transform: translateY(-3px);
    text-shadow: 0 4px 20px rgb(217, 236, 255);
    
}

#Link {
    display: flex;
    justify-content: center;
}

img {
    border-radius: 8px;
    transition: transform 0.3s ease;
}

img:hover {
    transform: scale(1.02); 
}

#stu {
    width: 30%;
    aspect-ratio: 9/14;
}

.block {
    position: relative;
    width: 20%;
    aspect-ratio : 1/1;
    background: #ddd;
    border-radius: 10px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    margin: 1em;
    transition: transform 0.5s ease;
    overflow: hidden; 
    z-index: 2;
}

.block::after {
    content: "";
    position: absolute;
    border-radius: 50%;
    left: 0;
    top: 100%; 
    width: 100%;
    height: 100%;
    background-image: linear-gradient(rgb(136, 206, 206), rgb(132, 132, 185));
    transition: all 0.5s ease;
    z-index: 3; 
    opacity: 0; 
}

.block:hover::after {
    top: 0%;
    transform: scale(1.5);
    opacity: 1;
}

.block:hover {
    transform: scale(1.2);
}

.block h3, 
.block img {
    position: relative; 
    z-index: 4;
    transition: 0.3s; 
}

.block h3 {
    color: #0a0c12;
    font-size: calc(0.5rem + 0.5vw); 
    line-height: 1.3;
    margin: 0.5em 0;
    text-align: center;
  }
  
  .block img {
    width: 30%; 
    max-width: 4em; 
    height: auto;
    touch-action: manipulation; 
  }

  .popup-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 13;
    justify-content: center;
    align-items: center;
  }
  
  .popup {
    background: white;
    padding: 30px;
    border-radius: 10px;
    max-width: 80%;
    position: relative;
    box-shadow: 0 0 20px rgba(0,0,0,0.3);
  }
  
  .close-btn {
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 24px;
    cursor: pointer;
    line-height: 1;
    color: black;
  }
  
  .popup p {
    color: black;
  }

  .popup p strong{
    font-size: 1.02em;
    color: #0087f5;
  }
  
  .popup-c {display: none;}
  
#popup-c-STR:checked ~ .popup-overlay-STR, #popup-c-CON:checked ~ .popup-overlay-CON,
#popup-c-DEX:checked ~ .popup-overlay-DEX, #popup-c-APP:checked ~ .popup-overlay-APP,
#popup-c-POW:checked ~ .popup-overlay-POW, #popup-c-SIZ:checked ~ .popup-overlay-SIZ,
#popup-c-INT:checked ~ .popup-overlay-INT, #popup-c-EDU:checked ~ .popup-overlay-EDU,
#popup-c-LUK:checked ~ .popup-overlay-LUK {
    display: flex;
  }
  
  .blocks-col {
    display: flex;
    flex-direction: column;
    gap: 0.5vw;
  }

  .blocks-row {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5vw;
  }


@media screen and (max-width: 1920px){
    #background {
        width: 1920px;
    }
}

@media screen and (max-width: 768px) {
    body {
        padding-top: 60px;
    }

    .section {
        width: 90% !important;
        margin: 60px auto !important;
    }

    strong {
        color:#b0c4de;
    }
    
    .block h3 {
      font-size: calc(0.6rem + 0.5vw);
      padding: 0 0.5em;
    }
    
    .block img {
      width: 25%;
      max-width: 3em;
    }


  }