html {
    -webkit-text-size-adjust: none; /* For Safari */
    -moz-text-size-adjust: none;   /* For Firefox */
    text-size-adjust: none;        /* Standard */
}

body {
    background-color: var(--body-group-color-1);
    color: var(--body-group-color-2); /*this is specified here as a fallback only. default dark mode colors.*/
    margin: 0px;
    margin-bottom: 0px;
    height: 100vh;
    min-height: max-content;
}

main {
    position: relative;
    min-height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: stretch;
    margin-top: 90px;
    /*margin-bottom: 40px;*/
    box-sizing: border-box;
}

aside {
    position: relative;
    flex: 1;
    border: solid 1px var(--aside-group-color-1);
    margin-top: 0px;
    margin-left: 20px;
    margin-right: 20px;
    margin-bottom: 20px;
    background-image: url("images/stock-price-img-913x512.webp");
    padding: 2px;
    background-color: var(--aside-group-color-1);
    background-repeat: repeat;
    opacity: 0.25;
}

:root {
    /*Default colors are dark mode. All dark and light mode color values can be referenced in script file.*/

    --body-group-color-1: black;
    --body-group-color-2: white;
    --body-group-color-3: rgb(44, 121, 255);

    --aside-group-color-1: white;

    --img-art-group-color-1: white;

    --button-group-color-1: black;
    --button-group-color-2: white;
    --button-group-color-3: rgb(255, 255, 0);
    --button-group-color-4: rgba(44, 121, 255, 0.5);
    --button-group-color-5: rgba(44, 121, 255, 0.25);
    --button-group-color-6: rgba(44, 121, 255, 0.4);
    --button-group-color-7: rgba(255, 255, 0, 0.8);

    --input-group-color-1: black;
    --input-group-color-2: rgb(44, 121, 255);
    --input-group-color-3: rgba(44, 121, 255, 0.7);
    
    --feedback-group-color-1: rgba(255, 255, 255, 0.75);
    --feedback-group-color-2: hsl(0, 0%, 15%);
    /*--feedback-group-color-2: rgb(220, 220, 250);*/

    --hr-group-color-1: rgba(255, 255, 255, 0.7);

    --a-group-color-1: white;
    --a-group-color-2: rgb(255, 200, 0);

    --code-group-color-1: white;
    --code-group-color-2: hsl(0, 0%, 15%);

    --calc-output-group-color-1: white;
    --calc-output-group-color-2: rgba(255, 255, 255, 0.7);
    --calc-output-group-color-3: rgba(255, 255, 255, 0.5);
    --calc-output-group-color-4: yellowgreen;
    --calc-output-group-color-5: rgb(44, 121, 255);
    --calc-output-group-color-6: rgba(0, 0, 0, 0.5);
    --calc-output-group-color-7: hsl(0, 0%, 15%);
    --calc-output-group-color-8: salmon;

    --calc-content-group-color-1: rgba(255, 255, 255, 0.5);
    --calc-content-group-color-2: rgb(87, 147, 252);
    --calc-content-group-color-3: rgba(0, 0, 0, 0.5);

    --select-group-color-1: white;
    --select-group-color-2: rgba(255, 255, 255, 0.1);
    --select-group-color-3: rgba(25.5, 25.5, 25.5, 1);
    --select-group-color-4: black;

    --select-group-color-1: black;
    --select-group-color-2: rgb(44, 121, 255);
    --select-group-color-3: rgb(170, 170, 170);
    --select-group-color-4: black;
    --select-group-color-5: rgb(2, 58, 154);

    --math-group-color-1: white;
    --math-group-color-2: salmon;
    --math-group-color-3: rgb(44, 121, 255);
    --math-group-color-4: hsl(0, 0%, 15%);

    --article-group-color-1: rgba(255, 255, 255, 0.9);
    --article-group-color-2: rgb(255, 200, 0);
    --article-group-color-3: rgba(0, 0, 0, 0.5);
    --article-group-color-4: hsl(0, 0%, 15%);

    --nav-group-color-1: rgba(255, 255, 255, 0.9);
    --nav-group-color-2: rgba(255, 255, 255, 0.5);
    --nav-group-color-3: rgba(44, 121, 255, 0.14);
    --nav-group-color-4: rgba(255, 255, 255, 0.3);
    --nav-group-color-5: white;

    --li-group-color-1: rgb(255, 200, 0);

    --footer-group-color-1: rgba(255, 255, 255, 0.5);
    --footer-group-color-2: rgba(0, 0, 0, 0.5);
    --footer-group-color-3: #0C172A;
    --footer-group-color-4: rgba(105, 159, 251, 0.12);
    --footer-group-color-5: rgba(255, 255, 255, 0.7);
}

.img-art {
    margin-top: 60px;
    font-family: monospace;
    border: solid 1px var(--img-art-group-color-1);
    border-radius: 5px;
}

/*-----Font Families-----*/

body {
    /*font-family: monospace;*/
    font-family: science gothic;
}

.favicon div {
    /*font-family: papyrus;*/
    font-family: papyrus;
}

.nav_content ul li, code, math *, input, select, .floating label {
    /*font-family: monospace;*/
    font-family: science gothic;
}

.calc_heading, .calc_sub_heading, .formula span, .calc_output span, .calc_output pre {
    /*font-family: cursive;*/
    font-family: science gothic;
}

footer {
    font-family: courier;
}

.copyright_statement, textarea {
    font-family: sans-serif;
}

/*-----Font Sizes-----*/

html {
    font-size: 10px;
    /*font-size: 10px; use this instead if changing all fonts to use rem units.*/
}

body {
    font-size: 1.4rem;
}

math * {
    font-size: 1.2rem;
}

.nav_content ul, .calc_output pre, label, select {
    font-size: 1.4rem;
}

/*.calc_description*/ article {
    font-size: 1.4rem;
}

.sub_heading, .calc_output {
    font-size: 1.6rem;
}

.favicon div, .formula strong {
    font-size: 1.8rem;
}

.floating_label {
    font-size: 2.1rem;
}

.nav_content ul li {
    font-size: 1.2rem;
}

h3 {
    font-size: 1.1em; /*this will take a little trial-and-error to change.*/
}

footer {
    font-size: 1.4rem;
}

textarea {
    font-size: 1.5rem;
}

/*-----Font Weights-----*/

body {
    font-weight: normal;
}

.favicon div, .calc_sub_heading, .formula span, input, textarea {  /*Note for input element: bold seems only necessary for black color.*/
    font-weight: normal;
}

.nav_content ul li {
    font-weight: normal;
}

#out-main {
    font-weight: normal;
}

#out-main * {
    font-weight: normal;
}

/*-----Font Colors-----*/

button:active {
    color: var(--button-group-color-1) !important;
}

input, textarea {
    color: var(--input-group-color-1);
}

hr {
    border-color: var(--hr-group-color-1);
}

a {
    color: var(--a-group-color-1);
}

code {
    color: var(--code-group-color-1);
}

button {
    color: var(--button-group-color-2);
}

.calc_output pre:hover, .calc_output pre:hover * {
    color: var(--calc-output-group-color-1);
}

select, option, ::picker(select) {
    color: var(--select-group-color-1);
}

math, math mi {
    color: var(--math-group-color-1);
}

article {
    color: var(--article-group-color-1);
}

.nav_content ul {
    color: var(--nav-group-color-1);
}

.nav_content ul * {
    color: var(--nav-group-color-2);
}

.calc_output span {
    color: var(--calc-output-group-color-2);
}

.calc_output pre {
    color: var(--calc-output-group-color-3);
}

math mo {
    color: var(--math-group-color-2);
}

a:hover {
    color: var(--a-group-color-2);
}

.formula strong, article ol li::marker {
    color: var(--article-group-color-2);
}

li strong {
    color: var(--li-group-color-1);
}

.calc_content ul li span, p span {
    color: var(--calc-content-group-color-1);
}

button:hover {
    color: var(--button-group-color-3);
}

#out-main span {
    color: var(--calc-output-group-color-4);
}

.calc_sub_heading, .formula span, strong {
    color: var(--calc-content-group-color-2);
}

form > div:focus-within label {
    color: var(--input-group-color-2);
}

.floating_label {
    color: var(--calc-output-group-color-5);
}

math mfrac {
    color: var(--math-group-color-3);
}

#out-main {
    color: var(--calc-output-group-color-5);
}

.disclaimer_statement {
    color: var(--footer-group-color-1);
}

/*-----All Other Styles, Continued-----*/

::-webkit-scrollbar {
    background: initial;
    width: 4px;
}

::-webkit-scrollbar-track {
  background: inherit;
}

::-webkit-scrollbar-thumb {
    background: var(--body-group-color-3);
    border-radius: 7px;
}

::-webkit-scrollbar-button {
    display: none;
}

nav, nav * {
    z-index: 2;
}

nav {
    position: fixed; /*check this v.s. fixed v.s. sticky*/
    display: flex;
    justify-content: space-between;
    gap: 10vw;
    top: 0px;
    left: 0px;
    right: 0px;
    padding: 0px;
    padding-left: 10px;
    padding-right: 10px;
    margin: 0px;
    background-color: var(--nav-group-color-3);
    border-bottom: solid 1px var(--nav-group-color-3);
    backdrop-filter: blur(50px);
    -webkit-backdrop-filter: blur(50px); /*for mobile support, otherwise it does not register this property at all.*/
}

.favicon {
    position: relative;
    align-items: start;
    justify-content: center;
    user-select: none;
    height: 40px;
    width: max-content;
    padding: 4px; 
    margin: 0px;
    margin-top: 6px;
}

.favicon * {
    box-sizing: border-box;
    color: var(--nav-group-color-5);
}

.favicon div {
    position: absolute;
    top: 50%;
    transform: translateY(-60%);
    left: 100%
}

.favicon, .favicon * {
    cursor: pointer;
}

.nav_content {
    display: flex;
    top: 2px;
    right: 0px;
    margin-right: auto;
    overflow-x: scroll;
    overscroll-behavior: none;
}

/* Hide scrollbar for Chrome, Safari, and Opera (WebKit browsers, common on mobile) */
.nav_content::-webkit-scrollbar {
    display: none;
}

/* Hide scrollbar for IE, Edge, and Firefox (modern approach) */
.nav_content {
    -ms-overflow-style: none;  /* IE and Edge */
    scrollbar-width: none;     /* Firefox */
}

.nav_content:first-child {
    border-left: solid 1px var(--nav-group-color-4);
}

.nav_content ul {
    list-style-type: none;
    min-width: 100px;
    max-width: 170px;
    width: 10vw;
    cursor: pointer;
    text-align: center;
    box-sizing: border-box;
    border-left: solid 1px var(--nav-group-color-4);
}

.nav_content ul li {
    display: none;
    position: relative;
    padding: 3px;
    user-select: none;
}

.nav_content ul li:first-child {
    margin-top: 10px;
}

.nav_content ul:hover li {
    display: block;
}

.reveal-nav-item li {
    display: block !important;
}

a {
    text-decoration: none;
}

code {
    background-color: var(--code-group-color-2);
    border-radius: 5px;
    padding: 12px;
}

math {
    background-color: var(--math-group-color-4);
    border-radius: 7px;
    padding: 2px;
    margin: 5px;
}

math * {
    margin: 2px;
}

.calc_heading {
    text-align: center;    
    margin-bottom: 5px;
    /*margin-top: originally set to 100px*/
}

.calc_sub_heading {
    text-align: center;
    margin: 0px; 
    padding: 0px;
}

.calc_content {
    position: relative;
    width: 50vw; /*remember to check this property when making edits for mobile friendly functionality*/
    /*max-width: 50vw;*/
    min-width: 600px;
    /*left: 50vw;
    transform: translateX(-50%);*/
    display: flex;
    justify-content: start;
    flex-direction: column;
    align-items: center;
    margin-top: 0px;
    margin-left: 70px;
    margin-right: 70px;
    margin-bottom: 40px;
}

section {
    width: max-content;
    padding: 0px;
}

button {
    position: relative;
    margin-top: 20px;
    padding: 5px;
    padding-left: 15px;
    padding-right: 15px;
    border-radius: 15px;
    background-color: var(--button-group-color-4);
    border: solid 1px var(--button-group-color-5);
    backdrop-filter: blur(50px);
    cursor: pointer;
}

button:hover {
    background-color: var(--button-group-color-6);
}

button:active {
    background-color: var(--button-group-color-7);
    border: solid 1px var(--button-group-color-4);
}

.inp_out_container {
    display: flex;
    /*Note: changing sizing properties of this container will affect the width of the "article" elements (child elements of the "main" element), they should match the width.*/
    margin-top: 60px;
    width: 100%;
    height: max-content;
    gap: 75px; /*was 75px, then 155px to test.*/
    justify-content: space-between;
}

/*.calc_description*/ article, .formula {
    position: relative;
    margin-top: 40px;
    box-sizing: border-box;
    width: 100%;
}

.formula {
    margin-top: 0px;
    margin-bottom: 25px;
}

.formula strong {
    margin-right: 10px;
}

.sub_heading {
    margin-top: 40px;
}

/*#explanation {
    padding: 10px;
    border: solid 2px var(--article-group-color-3);
    border-radius: 10px;
    background-color: var(--article-group-color-4);
    box-shadow: 0 0 5px 5px var(--article-group-color-4);
}*/

.indented-content {
    margin: 20px;
}

p.indented-content {
    margin-top: 25px;
    margin-bottom: 25px;
}

/*.calc_description*/ article ul {
    padding-left: 15px;
}

#explanation ol {
    margin-top: 40px;
}

article ol li {
    padding: 7px;
}

.calc_input_fields {
    position: relative;
    /*border: solid 2px var(--calc-content-group-color-3);
    border-radius: 10px;
    background-color: inherit;
    box-shadow: 0 0 5px 5px transparent;*/
    align-items: flex-start;
}

.calc_input_fields * {
    list-style: none;
}

form > div {
    display: flex; /* Enable flexbox for the container */
    justify-content: space-around; /* Distribute space between items */
    align-items: center;
}

form > div > label {
    margin-right: 15px;
    flex: 5;
}

form label {
    flex: 1;
}

form div span {
    margin-left: 5px;
    flex: 0;
    text-align: center;
}

.calc_output {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
    width: 250px;
    min-width: max-content;
    height: min-content;
    border: solid 2px var(--calc-output-group-color-6);
    border-radius: 10px;
    background-color: var(--calc-output-group-color-7);
    box-shadow: 0 0 5px 5px var(--calc-output-group-color-7);
    box-sizing: border-box;
    padding-top: 18px;
    padding-bottom: 14px;
    padding-left: 15px;
    padding-right: 15px;
    user-select: none;
}

.calc_output * {
    padding: 0px;
    margin: 0px;
}

#out-main span {
    margin-bottom: 10px;
}

.calc_output span {
    margin-left: 20px;
    vertical-align: bottom;
    padding-top: 2px;
}

.calc_output pre {
    display: flex;
    justify-content: space-between;
    min-width: max-content;
    -webkit-min-width: max-content;
    margin-top: 0.5px;
}

.calc_output pre:hover, .calc_output pre:hover * {
    cursor: pointer;
}

ul {
    padding: 0px;
}

label {
    margin-right: 5px;
    margin-top: 5px;
    margin-bottom: 5px;
}

input, textarea {
    margin-left: 5px;
    margin-top: 5px;
    margin-bottom: 5px;
    padding: 4px;
    text-align: center;
    border: solid 1px transparent;
    border-radius: 5px;
    background-color: var(--input-group-color-3);
}

/*"form > div:focus-within label": this special pseudo ":has" selector, is used to apply changes to the parent when interacting with the child element*/

/* For Chrome, Safari, Edge, and Opera */
input::-webkit-outer-spin-button, input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

#feedback input, #feedback textarea {
    background-color: var(--feedback-group-color-2);
    color: var(--feedback-group-color-1);
}

#feedback div {
    margin-top: 15px;
}

#feedback div:first-child {
    margin-top: 0px;
}

#feedback-details {
    margin-bottom: 30px;
}

#feedback-details, #feedback-details input, #feedback-details textarea {
    position: relative;
    display: block;
    box-sizing: border-box;
    margin-left: 0px;
}

#feedback-details input, #feedback-details textarea {
    width: 600px;
    max-width: 50vw;
    min-height: 100px;
    field-sizing: content;
    text-align: left;
}

#email-input input, #summary input {     
    field-sizing: content;
    min-width: 165px;
    max-width: 320px;
    padding-left: 10px;
    padding-right: 10px;
}

select {
    background-color: var(--select-group-color-2);
    color: var(--select-group-color-1);
    position: relative;
    /*left: -5px;*/ /*to align inner text with text of other input labels, since this box needs to also have 5px of padding*/
    right: 0px;
    padding: 5px;
    padding-left: 15px;
    padding-right: 15px;
    border-radius: 5px;
    border: none;
    margin-right: 0px;
    margin-bottom: 5px;
    width: max-content !important;
}

select, ::picker(select) {
    appearance: base-select;
}

option, ::picker(select) {
    background-color: var(--select-group-color-3);
    border: solid 0.5px var(--select-group-color-1);
}

::picker(select) {
    border-radius: 5px;
    margin-left: 0px;
}

option:hover {
    color: var(--select-group-color-5);
    font-weight: bold;
}

option:first-of-type {
    border-radius: 5px 5px 0 0;
}

option:last-of-type {
    border-radius: 0 0 5px 5px;
}

.floating_label {
    position: absolute;
    display: flex;
    padding-bottom: 0px;
    padding-left: 3px;
    padding-right: 2px;
    padding-top: 0px;
    margin: 0px;
    background-color: inherit;
    /*box-shadow: 0 0 1px 1px var(--calc-output-group-color-7);*/
    height: 3px;
    width: max-content;
    max-width: 90%;
    z-index: 1;
    bottom: 100%;
    left: 50%;
    transform: translate(-50%, 50%);
    justify-content: center;
    align-items: center;
    text-align: center;
    white-space: nowrap;
    text-decoration: wavy;
}

@media (max-width: 1080px) {
    main {
        justify-content: center;
    }

    aside {
        display: none;
    }

    .calc_content {
        width: 70vw;
    }

    .inp_out_container {
        gap: 40px;
    }

    #feedback-details input, #feedback-details textarea {
        max-width: 80vw;
    }
}

/*@media (max-height: 650px), (orientation: landscape) {
    html {
        font-size: 10px;
    }
}*/

@media (max-width: 650px) {

    nav {
        position: sticky;
    }

    main {
        margin-top: 5px;
    }

    .calc_content {
        width: 90vw;
        min-width: unset;
        max-width: unset;
        margin-left: 0px;
        margin-right: 0px;
    }

    .inp_out_container {
        flex-direction: column-reverse;
        align-items: center;
        justify-content: center;
    }

    .calc_output {
        position: relative;
        width: 280px;
    }

    .calc_inputs div input {
        /*font-weight: bold;*/
        font-size: 1.35rem;
    }

    #feedback {
        width: 85vw;
    }

    #feedback-details textarea {
        max-width: 100%;
    }

    .calc_input_fields {
        min-width: 75vw;
    }

    #feedback, #feedback * {
        position: relative;
        display: block;
        box-sizing: border-box;
        margin-left: 0px;
    }

    #feedback div {
        margin-top: 20px;
    }

    #feedback-details {
        margin-bottom: 0px;
    }

    #summary input {
        width: 280px;
    }

    #email-input input {
        width: 220px;
    }

    .nav_content ul:hover li {
        display: none;
    }
}

footer {
    position: sticky;
    top: 100%;
    box-sizing: border-box;
    width: 100%; 
    text-align: center;
    backdrop-filter: blur(5px);
    border-top: solid 2px var(--footer-group-color-2);
    /*background-color: rgba(25, 186, 255, 0.12);*/
    background-color: var(--footer-group-color-3);
    box-shadow: 0 0 1px 1px var(--footer-group-color-4);
    padding-top: 10px;
    padding-bottom: 5px;
    padding-left: 2px;
    padding-right: 2px;
    color: var(--footer-group-color-5);
}