:root {
    --white: #fff;
    --black: #000;
    --grey-200: #e5e7eb; /* background */

    /* light backgrounds */
    --red-300: #fca5a5;
    --orange-300: #fdba74;
    --amber-300: #ffd230;
    --yellow-300: #ffdf20;
    --lime-300: #bbf451;
    --green-300: #7bf1a8;
    --emerald-300: #5ee9b5;
    --teal-300: #46ecd5;
    --cyan-300: #65ecfd;
    --sky-300: #74d4ff;
    --blue-300: #8ec5ff;
    --indigo-300: #a3b3ff;
    --pink-300: #fda5d5;
    --grey-300: #d1d5dc;
    --violet-300: #c4b4ff;
    --neutral-300: #d4d4d4;


    /* standard backgrounds */
    --red-500: #ef4444;
    --orange-500: #f97316;
    --amber-500: #fe9a00;
    --yellow-500: #f0b100;
    --lime-500: #7ccf00;
    --green-500: #00c950;
    --emerald-500: #00bc7d;
    --teal-500: #00bba7;
    --cyan-500: #00b8db;
    --sky-500: #00a6f4;
    --blue-500: #2b7fff;
    --indigo-500: #615fff;
    --pink-500: #f6339a;
    --grey-500: #6a7282;
    --violet-500: #8e51ff;
    --neutral-500: #737373;

    /* hover backgrounds */
    --red-800: #991b1b;
    --orange-800: #9a3412;
    --amber-800: #973c00;
    --yellow-800: #894b00;
    --lime-800: #3c6300;
    --green-800: #016630;
    --emerald-800: #006045;
    --teal-800: #005f5a;
    --cyan-800: #005f78;
    --sky-800: #00598a;
    --blue-800: #193cb8;
    --indigo-800: #372aac;
    --pink-800: #a3004c;
    --grey-800: #1e2939;
    --violet-800: #5d0ec0;
    --neutral-800: #262626;

    /* active backgrounds */
    --red-900: #7f1d1d;
    --orange-900: #7c2d12;
    --amber-900: #7b3306;
    --yellow-900: #733e0a;
    --lime-900: #35530e;
    --green-900: #0d542b;
    --emerald-900: #004f3b;
    --teal-900: #0b4f4a;
    --cyan-900: #104e64;
    --sky-900: #024a70;
    --blue-900: #1c398e;
    --indigo-900: #312c85;
    --pink-900: #861043;
    --grey-900: #101828;
    --violet-900: #4d179a;
    --neutral-900: #171717; /* text */
}

* {
    margin: 0;
    padding: 0;
    outline: none;
    box-sizing: border-box;
    font-family: calibri;
}

html, body {
    min-height: 100%;
    min-height: 100vh;
}

body {
    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr auto;
    grid-template-areas:
        "header"
        "main"
        "footer";
}

ul {
    list-style-type: none;
}

header {
    grid-area: header;
    background-color: var(--blue-500);
    padding: 20px 0px;
}

nav {
    background-color: #ffffffaa;
    border-radius: 10px;
}

main {
    grid-area: main;
    background-color: var(--grey-200);
}

.content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 0px;
    height: 100%;
    width: 100%;
}

#page-heading {
    font-size: 2em;
    margin-bottom: 30px;
}

/* view snippet link */

#view-snippets:link {
    display: block;
    padding: 10px 20px;
    border-radius: 10px;
    color: var(--white);
    background-color: var(--pink-500);
    text-decoration: none;
    font-weight: bold;
    font-size: 1.3em;
    line-height: 1.5em;
}

#view-snippets:visited {
    color: var(--white);
}

#view-snippets:hover {
    background-color: var(--pink-800);
}

#view-snippets:active {
    background-color: var(--pink-900);
}


/* text links */

.text-link:link {
    text-decoration: none;
    color: var(--sky-800);
}

.text-link:hover {
    text-decoration: underline;
    text-underline-offset: 8px;
}

.text-link:active {
    text-decoration: none;
}

.text-link:visited {
    text-decoration: none;
    color: var(--sky-800);
}



/** header */

nav ul {
    list-style-type: none;

    display: flex;
    justify-content: center; /* horizontal */
    /*align-items: center; /* vertical */
    /*gap: 2px;*/
}

nav ul li a:link {
    text-decoration: none;
    font-size: 1.3em;
    line-height: 1.5em;
    padding: 8px 20px;
    color: var(--neutral-900);
    border-radius: 5px;
}

nav ul li a:visited {
    color: var(--neutral-900);
}

nav ul li a:hover  {
    color: var(--white);
    background-color: var(--blue-800);
}

nav ul li a:active {
    color: var(--white);
    background-color: var(--blue-900);
}


/** index page */

#index {
    
}

#index .content {
    display: flex;
    gap: 20px;
}

#landing-text {
    display: flex;
    flex-direction: column;
    justify-content: center; /* vertical */
    align-items: flex-start; /* horizontal */
    width: 60%;
}

#landing-image {
    display: flex;
    justify-content: flex-start; /* horizontal */
    align-items: center; /* vertical */
}

#landing-image img {
    width: 500px;
    height: 700px;
    border-radius: 15px;
}

#index h1 {    
    font-size: 5em;
    padding-bottom: 0.5em;
}

#index p {    
    font-size: 2em;
    padding-bottom: 1em;
}

/** about page */

#about {
    
}

#code-container {
    display: flex;
    gap: 20px;
    margin-top: 20px;
}

#code-container aside {
    width: 20%;
}

#code-container article {
    width: 80%;
}

.code-article {
    padding: 20px;
    border-radius: 5px;
    background-color: var(--emerald-300);
}

.code-article h3 {
    padding: 20px;
    border-radius: 5px;
    background-color: var(--emerald-500);
}

code {
    display: block;
    font-family: "courier new", monospace;
    white-space: pre-line;
    overflow-x: scroll;
}


/** snippets page */

#snippets {
    
}

#snippet-link-container {
    margin-top: 2em;

    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: auto;
    gap: 40px;
}

#snippet-link-container a {
    padding: 40px 0px;
}

.snippet-link {
    text-decoration: none;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 4px;
    font-size: 1em;
    border: none;
    border-radius: 5px;
    transition: box-shadow 0.15s;
}

.snippet-link:hover {
    box-shadow: rgba(0, 0, 0, 0.56) 0px 10px 30px 4px;
}

.snippet-picture img {
    width: 32px;
    height: 32px;
}

#create-link   { background-color: var(--grey-300);    color: var(--neutral-900); }
#syntax-list   { background-color: var(--grey-300);    color: var(--neutral-900); }
#create-syntax { background-color: var(--grey-300);    color: var(--neutral-900); }
#sql-link      { background-color: var(--red-500);     color: var(--red-800);     }
#js-link       { background-color: var(--orange-500);  color: var(--orange-800);  }
#html-link     { background-color: var(--amber-500);   color: var(--amber-800)    }
#css-link      { background-color: var(--yellow-500);  color: var(--yellow-800);  }
#php-link      { background-color: var(--lime-500);    color: var(--lime-800);    }
#java-link     { background-color: var(--green-500);   color: var(--green-800);   }
#pbi-link      { background-color: var(--emerald-500); color: var(--emerald-800); }
#apps-link     { background-color: var(--teal-500);    color: var(--teal-800);    }
#flow-link     { background-color: var(--cyan-500);    color: var(--cyan-800);    }
#other-link    { background-color: var(--sky-500);     color: var(--sky-800);     }


/** contact page */

#contact {
    
}

#send-message-button, #sign-in-button, #forgot-password-button, #new-account-button {
    color: var(--white);
    /*text-transform: none;*/
}


/** sign-in page */

#sign-in {
    
}

#create-account-container {
    display: flex;
    justify-content: space-between; /* horizontal */
}


/** footer */

footer {
    grid-area: footer;
    background-color: var(--indigo-900);
}

footer ul {
    list-style-type: none;
    display: flex;
    gap: 20px;
}

footer ul li a:link {
    text-decoration: none;
    font-size: 1.3em;
    line-height: 1.5em;
    padding: 8px 20px;
    color: var(--white);
}

footer ul li a:visited {
    color: var(--white);
}

footer ul li a:hover  {
    color: var(--indigo-500);
}

footer ul li a:active {
    color: var(--indigo-800);
}


/** terms page */

#terms {
    
}




/** licensing page */

#licensing {
    
}


/** forms */

form {
    padding: 20px 0px;
    font-size: 1.2em;
}

form fieldset {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

form fieldset legend {
    margin-bottom: 20px;
}

form input, form textarea, form select {
    padding: 20px;
    border: none;
    font-size: 1.1em;
    border-radius: 5px;
    background-color: var(--white);
}

form textarea {
    resize: none;
}

fieldset {
    border: none;
}

legend {
    
}

/* buttons */

.primary-button {
    padding: 10px 20px;
    border: none;
    font-size: 1.1em;
    border-radius: 5px;
    text-decoration: none;
    /*text-transform: uppercase;*/
    color: var(--neutral-900);
}

.button-list {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-top: 20px;
}


/* primary colour buttons */

.primary-button.red-button     { background-color: var(--red-500);     color: var(--neutral-900); }
.primary-button.orange-button  { background-color: var(--orange-500);  color: var(--neutral-900); }
.primary-button.yellow-button  { background-color: var(--yellow-500);  color: var(--neutral-900); }
.primary-button.green-button   { background-color: var(--green-500);   color: var(--neutral-900); }
.primary-button.blue-button    { background-color: var(--blue-500);    color: var(--white);       }
.primary-button.indigo-button  { background-color: var(--indigo-500);  color: var(--white);       }
.primary-button.violet-button  { background-color: var(--violet-500);  color: var(--white);       }
.primary-button.neutral-button { background-color: var(--neutral-300); color: var(--neutral-900); }

/* primary buttons hover */
.primary-button.red-button:hover     { background-color: var(--red-800);    color: var(--white); }
.primary-button.orange-button:hover  { background-color: var(--orange-800); color: var(--white); }
.primary-button.yellow-button:hover  { background-color: var(--yellow-800); color: var(--white); }
.primary-button.green-button:hover   { background-color: var(--green-800);  color: var(--white); }
.primary-button.blue-button:hover    { background-color: var(--blue-800);   color: var(--white); }
.primary-button.indigo-button:hover  { background-color: var(--indigo-800); color: var(--white); }
.primary-button.violet-button:hover  { background-color: var(--violet-800); color: var(--white); }
.primary-button.neutral-button:hover { background-color: var(--grey-500);   color: var(--white); }

/* primary buttons active */
.primary-button.red-button:active     { background-color: var(--red-900);    color: var(--white); }
.primary-button.orange-button:active  { background-color: var(--orange-900); color: var(--white); }
.primary-button.yellow-button:active  { background-color: var(--yellow-900); color: var(--white); }
.primary-button.green-button:active   { background-color: var(--green-900);  color: var(--white); }
.primary-button.blue-button:active    { background-color: var(--blue-900);   color: var(--white); }
.primary-button.indigo-button:active  { background-color: var(--indigo-900); color: var(--white); }
.primary-button.violet-button:active  { background-color: var(--violet-900); color: var(--white); }
.primary-button.neutral-button:active { background-color: var(--grey-800);   color: var(--white); }


/* child sections (about and terms pages) */

.child-section {
    font-size: 1.1em;
    line-height: 1.4em;
}

.child-section:not(:last-of-type) {
    margin-bottom: 30px;
}

.child-section h2 {
    margin-bottom: 30px;
}

.child-section p:not(:last-of-type) {
    margin-bottom: 20px;
}





#visibility-container {
    display: flex;
    gap: 20px;
}

.vis-bttn {
    background-color: var(--white);
}

#visibility-container button {
    width: 100%;
    
    min-height: 200px;
    border: none;
    border-radius: 5px;
}

#visibility-container button h3 {
    margin-bottom: 30px;
}

button.selected-visibility-button  {
    background-color: var(--sky-300);
    border: 1px solid #f00;
}



.up {
    text-transform: uppercase;
}

.red {
    color: #f44336;
}


/* screens less than 900px */
@media screen and (max-width: 900px) {

    header {
        padding: 20px;
        width: 100%;
    }

    nav ul {
        flex-direction: column;
        padding: 0px 10px;
    }

    nav ul li a:link {
        padding: 6px 10px;
        display: block;
        width: 100%;
    }

    #contact, #sign-in, #snippets, #licensing, #terms, #new-account
        , #forgot-password, #about {

        padding: 20px;
    }

    #index .content {
        flex-direction: column;
        align-items: center; /* horizontal */
    }

    #landing-text {
        width: 90%;
        order: 0;
    }

    #landing-text {
        width: 90%;
        order: 0;
    }

    #landing-image {
        order: 1;
    }

    #landing-image img {
        width: 350px;
        height: 400px;
        border-radius: 15px;
    }

    #snippet-link-container {
        grid-template-columns: 1fr; /* adjust to 1 column */
        gap: 20px;
    }

    #code-container {
        flex-direction: column;
    }

    #code-container aside {
        width: 100%;
        order: 0;
    }

    #code-container article {
        width: 100%;
        order: 1;
    }

    #visibility-container {
        flex-direction: column;
        
    }

    footer ul {
        flex-direction: column;
        gap: 10px;
    }

    footer ul li a:link {
        padding: 6px 10px;
        display: block;
        width: 100%;
    }


}