/**
    Design inspired by Popular Mechanics guide to basic auto repair
    https://archive.org/details/popularmechanics0000unse_f7g2/page/n3/mode/2up
*/

:root {
    --primary: rgb(72, 68, 65);
    --background: rgb(232, 229, 225);
    --muted: rgb(137, 135, 128);
}

html {
    background-color: var(--background);
    scroll-behavior: smooth;
    box-sizing: border-box;
}

/* Disable smooth scrolling if user prefers reduced motion */
@media (prefers-reduced-data: reduce) {
    html {
        scroll-behavior: auto;
    }
}

body {
    margin: 0;
    color: var(--primary);
    background: linear-gradient(
        to right,
        rgb(198, 191, 180),
        var(--background) 30px
    );
    font-size: 130%;
    font-family: sans-serif;
}

main {
    position: relative;
    margin: 0 auto;
    width: 1000px;
    max-width: 90vw;
    display: flex;
    flex-direction: column;
}

section {
    border-left: 10px solid var(--primary);
    padding: 4rem 2rem;
}

h2 {
    font-size: min(9vw, 5rem);
    line-height: min(9vw, 5rem);
    letter-spacing: -4px;
    margin-top: 0;
    margin-bottom: 1rem;
}

h3 {
    font-family: sans-serif;
    font-size: 1rem;
    font-weight: 400;
    color: var(--muted);
}

a {
    font: inherit;
    color: var(--primary);
    font-weight: 900;
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" viewBox="0 0 100 100"><rect x="0" y="0" height="100" width="100" style="fill:rgba(252,249,85,0.5)" /></svg>');
    background-repeat: no-repeat;
    background-position: left;
    background-size: 0%;
    padding: 3px;
    margin: 0 -3px;
    transition: background-size 0.5s ease;
}

a:hover {
    background-size: 100%;
}

i {
    font-family: serif;
    font-size: 1.1rem;
}

ol,
ul,
li {
    font: inherit;
    margin-inline-start: 0;
}

code {
    color: var(--background);
    background-color: var(--muted);
    padding: 0 3px;
}

img,
iframe {
    max-width: 100%;
}

iframe {
    display: block;
    margin: 1rem auto;
}

.pico8 {
    width: 100%;
    aspect-ratio: 6/5;
}

/**
* SPREADSHEET
*/

table {
    width: 100%;
    border-collapse: collapse;
}
tr {
    height: 2rem;
}
th {
    border-top: 1px solid var(--muted);
    border-bottom: 1px solid var(--muted);
    width: 7%;
}
tr:first-of-type th,
tr:last-of-type th {
    border: none;
    border-left: 1px solid var(--muted);
    border-right: 1px solid var(--muted);
}
tr:first-of-type th:first-of-type,
tr:first-of-type th:last-of-type,
tr:last-of-type th:first-of-type,
tr:last-of-type th:last-of-type {
    border: none;
}
td {
    padding: 5px;
    border: 1px solid var(--muted);
    width: 14%;
    word-break: break-word;
    font-size: 1rem;
}
td a {
    font-weight: normal;
}
td.center {
    text-align: center;
}

@media (max-width: 550px) {
    body {
        background: var(--background);
    }
    main {
        max-width: 100vw;
    }
    section {
        border: none !important;
        padding: 2rem 1rem;
    }
    h1,
    h2 {
        letter-spacing: -2px;
    }
    #spreadsheets {
        overflow-x: scroll;
    }
    table {
        width: 800px;
    }
}

/**
    MASTHEAD
*/
#masthead {
    text-align: right;
    border-right: 10px solid var(--primary);
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: end;
}

#masthead h1 {
    width: min-content;
    color: var(--background);
    background: var(--primary);
    font-size: 2rem;
    font-weight: 900;
    line-height: 2rem;
    font-family: serif;
    text-align: left;
    padding: 5px 10px;
    margin: 0;
}

#masthead img {
    width: 300px;
    max-width: 50vw;
    height: auto;
    aspect-ratio: auto;
    image-rendering: crisp-edges;
}

/**
    TWO-COLUMN SECTIONS
*/
.two-columns {
    padding-left: 0;
    padding-right: 0;
    display: grid;
    grid-template-areas: "header header" "column1 column2";
    grid-template-columns: 1fr 1fr;
}

.two-columns h2 {
    grid-area: header;
    margin-left: 2rem;
}

.column {
    padding: 0 1rem;
    border-right: 10px solid var(--primary);
    height: 100%;
}

.column h3 {
    margin-top: 1rem;
    margin-bottom: 0;
    letter-spacing: -1px;
}

.column h3:not(:has(a)) {
    display: flex;
    justify-content: space-between;
}

.column h3:first-child {
    margin-top: 0;
}

.column h3 a {
    font: inherit;
    color: inherit;
    text-decoration: none;
    display: flex;
    justify-content: space-between;
    transition:
        background-size 0.5s ease,
        color 1s ease;
}

.column h3 a:hover {
    color: var(--primary);
    text-decoration: underline;
}

.column ul {
    list-style-type: none;
    padding-inline-start: 0;
}

.column li {
    margin-bottom: 1rem;
}

.column p {
    margin: 0;
    margin-bottom: 1rem;
    font-size: 1rem;
    line-height: 1.5rem;
    text-align: justify;
}

.column p::first-letter {
    margin-left: 2rem;
}

/**
    TABLE OF CONTENTS or PERIODIC UPDATES
*/
#contents p,
#updates p {
    font-size: 0.8rem;
    line-height: 1rem;
    width: 80%;
    color: var(--muted);
}

#contents p::first-letter,
#updates p::first-letter {
    margin-left: 0;
}

#scrollingOptions {
    position: sticky;
    bottom: 0;
    padding: 10px 4px;
    background: var(--background);
    margin: 0;
    display: flex;
    flex-direction: row;
    justify-content: end;
    gap: 10px;
}

#scrollingOptions a {
    display: block;
    width: min-content;
    color: var(--background);
    background: var(--muted);
    font-size: 0.8rem;
    font-weight: 900;
    line-height: 0.8rem;
    font-family: serif;
    text-align: left;
    padding: 5px 10px;
    text-decoration: none;
    transition: background-color 0.5s ease;
}

#scrollingOptions a:hover {
    background: var(--primary);
}

@media (max-width: 550px) {
    .two-columns {
        display: flex;
        flex-direction: column;
    }
    .column {
        border: none;
    }
}