@font-face {
  font-family: 'Bestie';
  src: url('angelina.ttf') format('truetype');
  font-weight: normal;
  font-style: normal;
}

html{
    height: 100vh;
    margin: 0;
    padding: 0;
    font-family: Arial, Helvetica, sans-serif;
    background-image: url("bb.jpg");

}

.container {
  max-width: 900px;
  width: 90%;
  margin: 0 auto; 
  padding-left: 5%;
  padding-right: 5%;
}

footer {
    padding: 30px;
}

#main {
    font-family: "Bestie";
    font-size: 24px;
    color: white;
    background: black;
    padding: 20px 30px 20px 30px;
    margin: auto;
    width: 90%;
    border: 1px solid rgb(255, 255, 255);
    border-radius: 20px 20px 20px 20px;
}

@media screen and (max-width: 768px) {
    html {
        background-color: #000000;
        background-image: none;
    }

    .container {
        max-width: 100%;
        width: 100%;
        margin: 0 auto; 
        padding-left: 0;
        padding-right: 0;
    }

    #main {
        font-family: "Bestie";
        font-size: 24px;
        color: white;
        background: black;
        padding: 0;
        margin: 2% 5% 2% 2%;
        width: 95%;
        border: none;
        border-radius: none;
    }
    footer {
      padding: 0px;
    }
}



h1, h2 {
    text-align: center;
}

iframe {
    display: block;
    margin: 0 auto;
}

#book-cite {
    font-family: 'Courier New', Courier, monospace;
    font-size: medium;
    padding: 1px 2px 1px 2px;
    
    background-color: #3a3a3a;
}

.coding-switch {
    display: none;
    
    padding-top: 0;
    border-radius: 10px;
    margin: 2px;
    margin-top: 0;
    height: 100%;
}

.coding-switch.active {
    display: block;
}

.coding-switch pre {
    background: #3a3a3a;
    border: 1px solid #ddd;
    color: #cacaca;
    page-break-inside: avoid;
    font-family: monospace;
    font-size: 15px;
    line-height: 1.6;
    border-bottom-left-radius: 5px;
    border-bottom-right-radius: 5px;
    max-width: 100%;
    overflow: auto;
    padding: 1em 1.5em;
    display: block;
    word-wrap: break-word;
    margin: 0;
}

.coding-switch code {
    font-size: large;
    display: block;
    background: none;
    padding: 0;
}

.code-toggle {
    padding: 0;
    border: 1px solid rgb(255, 255, 255);
    border-top-left-radius: 5px;
    border-top-right-radius: 5px;
    margin: 0px 2px 0px 2px;
    height: 30px;
    border-bottom: none;
    display: flex;
}

.code-toggle button {
    background-color: #000000;
    border: none;
    border-right: 1px solid rgb(255, 255, 255);
    
    opacity: 0.6;
    color: #FFFFFF;
    text-align: center;
    font-size: medium;
    font-family: 'Courier New', Courier, monospace;
    padding-bottom: 0px;

    width: 120px;
    height: 30px;
    transition: 0.3s;
    cursor: pointer;
    margin: 0px 0px 0px 1px;
    

}

#clang {
    background-color: #000000;
    border: none;
    border-right: 1px solid rgb(255, 255, 255);
    border-left: 1px solid white;
    
    opacity: 0.6;
    color: #FFFFFF;
    text-align: center;
    font-size: medium;
    font-family: 'Courier New', Courier, monospace;
    padding-bottom: 0px;

    width: 120px;
    
    transition: 0.3s;
    cursor: pointer;
    margin: 0;
    
}


.code-toggle button.active {
    opacity: 1;
    color: yellow;
    text-decoration: underline;
}

#clang.active {
    opacity: 1;
    color: yellow;
    text-decoration: underline;
}

.code-toggle button:hover {
    
    text-decoration: underline;
}

#codeshow {
    display: inline-block;
    border-radius: 4px;
    background-color: #000000;
    border: 1px solid rgb(255, 255, 255);
    opacity: 0.6;
    color: #FFFFFF;
    text-align: center;
    font-family: "Bestie";
    font-size: 24px;
    
    width: 120px;
    height: 50px;
    transition: 0.3s;
    cursor: pointer;
    margin: 5px;
}

#codeshow:hover {opacity: 1}

.language {
    border: 1px solid #ddd;
    border-bottom: white;
    border-top-left-radius: 5px;
    border-top-right-radius: 5px;
    margin: 0px 2px 0px 2px;
    padding: 0;
    background-color: #000000;
}

.language p {
    font-family: 'Courier New', Courier, monospace;
    font-size: small;
    color: #808080;
    margin: 10px 0px 0px 10px;
    padding: 0px 10px 10px 0px;
    text-align: right;
}

.image-text img {
    scale: 150%;
    margin: auto;
    display: block;
    width: 50%;

}

.coding code {
    font-size: large;
    display: block;
    background: none;
    padding: 0;
}

.coding pre {
    background: #3a3a3a;
    border: 1px solid #ddd;
    color: #ffffff;
    page-break-inside: avoid;
    font-family: monospace;
    font-size: 15px;
    line-height: 1.6;
    border-bottom-left-radius: 5px;
    border-bottom-right-radius: 5px;
    max-width: 100%;
    overflow: auto;
    padding: 1em 1.5em;
    display: block;
    word-wrap: break-word;
    margin: 0;
}

.coding {
    padding-top: 0;
    border-radius: 10px;
    margin: 2px;
    margin-top: 0;
    height: 100%;
}

.coding p {
    font-family: 'Courier New', Courier, monospace;
    font-size: medium;
    margin: 0px 20px 0px 20px;
    
}

.code-snippets {
    display: none;
}



.quote {
    background: rgb(97, 97, 97);
    margin: 1%;
    padding: 0.5px 20px 1px 20px;
    border-radius: 10px;
    font-style: italic;
    font-family: 'Courier New', Courier, monospace;
    font-size: large;
}

.graph img{
    display: block;
    border-radius: 4px;
    border:  1px solid #ddd;
    padding: 5px;
    width: 60%;
    margin-left: auto;
    margin-right: auto;
    
}

.graph p{
    text-align: center;
}

form {
    font-size: 36px;
}



form input {
    font-size: 32px;
    font-family: "Bestie";
}





#submitButton {
  display: inline-block;
  border-radius: 4px;
  background-color: #000000;
  border: 1px solid rgb(255, 255, 255);
  opacity: 0.6;
  color: #FFFFFF;
  text-align: center;
  font-family: "Bestie";
  font-size: 24px;
  
  width: 120px;
  height: 50px;
  transition: 0.3s;
  cursor: pointer;
  margin: 5px;
}

#submitButton:hover {opacity: 1}




#calculator {
    max-width: 600px;
    margin: 0 auto;
    padding: 10px 10px 10px 10px;
    border: 1px solid rgb(240, 236, 15);
    border-radius: 10px 10px 10px 10px;
}
.matrix-grid {
    margin-top: 20px;
    display: grid;
    gap: 5px;
    grid-template-columns: repeat(auto-fill, minmax(40px, 1fr));
    grid-auto-rows: 40px;
}
.matrix-grid input {
    font-family: "Bestie";
    width: 100%;
    height: 100%;
    font-size: 22px;
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    border: 1px solid rgb(255, 255, 255);
}