/* ==========================================================================
   Fonts
   ========================================================================== */

@import url('https://fonts.cdnfonts.com/css/jetbrains-mono-2');

/* ==========================================================================
  Berkeley Mono™
  © Copyright 2025, U.S. Graphics, LLC.
  Licensed under SKU LT-02 to Eric Taylor (Taylor IT Solutions LLC)
  https://usgraphics.com/products/berkeley-mono
   ========================================================================== */

@font-face {
  font-family: 'Berkeley Mono';
  src: url('http://erictaylor.me/files/font/BerkeleyMono-Regular.woff2') format('woff2'),
       url('http://erictaylor.me/files/font/BerkeleyMono-Regular.woff') format('woff');
  font-weight: normal;
  font-style: normal;
}

@font-face {
  font-family: 'Berkeley Mono';
  src: url('http://erictaylor.me/files/font/BerkeleyMono-Bold.woff2') format('woff2'),
       url('http://erictaylor.me/files/font/BerkeleyMono-Bold.woff') format('woff');
  font-weight: bold;
  font-style: normal;
}

@font-face {
  font-family: 'Berkeley Mono';
  src: url('http://erictaylor.me/files/font/BerkeleyMono-Italic.woff2') format('woff2'),
       url('http://erictaylor.me/files/font/BerkeleyMono-Italic.woff') format('woff');
  font-weight: normal;
  font-style: italic;
}

/* ==========================================================================
   Base & Variables
   ========================================================================== */

@font-face {
  font-family: 'Berkeley Mono';
  src: url('http://erictaylor.me/files/font/BerkeleyMono-BoldItalic.woff2') format('woff2'),
       url('http://erictaylor.me/files/font/BerkeleyMono-BoldItalic.woff') format('woff');
  font-weight: bold;
  font-style: italic;
}

:root {
  --font-family: "Berkeley Mono", "JetBrains Mono", "Cascadia Code", "Fira Code", "Source Code Pro",
    Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --line-height: 1.20rem;
  --border-thickness: 2px;
  --text-color: #000;
  --text-color-alt: #666;
  --background-color: #fff;
  --background-color-alt: #eee;

  --font-weight-normal: 500;
  --font-weight-medium: 600;
  --font-weight-bold: 800;

  font-family: var(--font-family);
  font-optical-sizing: auto;
  font-weight: var(--font-weight-normal);
  font-style: normal;
  font-variant-numeric: tabular-nums lining-nums;
  font-size: 16px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --text-color: #fff;
    --text-color-alt: #aaa;
    --background-color: #000;
    --background-color-alt: #222;
  }
}

[data-theme="dark"] {
  --text-color: #fff;
  --text-color-alt: #aaa;
  --background-color: #000;
  --background-color-alt: #222;
}

[data-theme="light"] {
  --text-color: #000;
  --text-color-alt: #666;
  --background-color: #fff;
  --background-color-alt: #eee;
}

* {
  box-sizing: border-box;
}

*+* {
  margin-top: var(--line-height);
}

.theme-toggle {
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  vertical-align: middle;
  width: 1.5ch;
  height: 1.5ch;
  margin: 0 0 0 0;
}

.theme-toggle svg {
  width: 100%;
  height: 100%;
  fill: var(--text-color);
}

.theme-toggle:hover svg {
  fill: var(--text-color-alt);
}

/* ==========================================================================
   Layout & Grid
   ========================================================================== */

html {
  display: flex;
  width: 100%;
  margin: 0;
  padding: 0;
  flex-direction: column;
  align-items: center;
  background: var(--background-color);
  color: var(--text-color);
}

body {
  position: relative;
  width: 100%;
  margin: 0;
  padding: var(--line-height) 2ch;
  max-width: calc(min(80ch, round(down, 100%, 1ch)));
  line-height: var(--line-height);
  overflow-x: hidden;
}

@media screen and (max-width: 480px) {
  :root {
    font-size: 14px;
  }

  body {
    padding: var(--line-height) 1ch;
  }
}

@media print {
  .page, .page-break { break-after: page; }
}

/* Override universal margins for grid */
.grid {
  margin-top: 0;
}

.grid>* {
  margin-top: 0;
}

/* Fix grid spacing */
.grid {
  --grid-cells: 0;
  display: flex;
  gap: 1ch;
  width: calc(round(down, 100%, (1ch * var(--grid-cells)) - (1ch * var(--grid-cells) - 1)));
  margin-bottom: var(--line-height);
}

.grid>*,
.grid>input {
  flex: 0 0 calc(round(down, (100% - (1ch * (var(--grid-cells) - 1))) / var(--grid-cells), 1ch));
}

.grid:has(> :last-child:nth-child(1)) {
  --grid-cells: 1;
}

.grid:has(> :last-child:nth-child(2)) {
  --grid-cells: 2;
}

.grid:has(> :last-child:nth-child(3)) {
  --grid-cells: 3;
}

.grid:has(> :last-child:nth-child(4)) {
  --grid-cells: 4;
}

.grid:has(> :last-child:nth-child(5)) {
  --grid-cells: 5;
}

.grid:has(> :last-child:nth-child(6)) {
  --grid-cells: 6;
}

.grid:has(> :last-child:nth-child(7)) {
  --grid-cells: 7;
}

.grid:has(> :last-child:nth-child(8)) {
  --grid-cells: 8;
}

.grid:has(> :last-child:nth-child(9)) {
  --grid-cells: 9;
}

/* ==========================================================================
   Typography
   ========================================================================== */

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: var(--font-weight-bold);
  margin: calc(var(--line-height) * 2) 0 var(--line-height);
  line-height: var(--line-height);
}

h1 {
  font-size: 2rem;
  line-height: calc(2 * var(--line-height));
  margin-bottom: calc(var(--line-height) * 2);
  text-transform: uppercase;
}

h2 {
  font-size: 1rem;
  text-transform: uppercase;
}

.header-anchor {
  opacity: 0;
  text-decoration: none;
  margin-left: 1ch;
  font-weight: normal;
}

h1:hover .header-anchor,
h2:hover .header-anchor,
h3:hover .header-anchor,
h4:hover .header-anchor,
h5:hover .header-anchor,
h6:hover .header-anchor {
  opacity: 1;
}

hr {
  position: relative;
  display: block;
  height: var(--line-height);
  margin: calc(var(--line-height) * 1.5) 0;
  border: none;
  color: var(--text-color);
}

hr:after {
  display: block;
  content: "";
  position: absolute;
  top: calc(var(--line-height) / 2 - var(--border-thickness));
  left: 0;
  width: 100%;
  border-top: calc(var(--border-thickness) * 3) double var(--text-color);
  height: 0;
}

hr.thin {
  position: relative;
  height: var(--line-height);
  margin: var(--line-height) 0;
}

hr.thin:after {
  display: block;
  content: "";
  position: absolute;
  top: calc(var(--line-height) / 2);
  left: 0;
  width: 100%;
  border-top: var(--border-thickness) solid var(--text-color-alt);
  height: 0;
}

p {
  word-break: break-word;
  word-wrap: break-word;
  hyphens: auto;
  margin-bottom: var(--line-height);
}

strong {
  font-weight: var(--font-weight-bold);
}

em {
  font-style: italic;
}

a {
  text-decoration-thickness: var(--border-thickness);
}

a:link,
a:visited {
  color: var(--text-color);
}

sub {
  position: relative;
  display: inline-block;
  margin: 0;
  vertical-align: sub;
  line-height: 0;
  width: calc(1ch / 0.75);
  font-size: .75rem;
}

/* ==========================================================================
   Components
   ========================================================================== */


/* Tables */
table {
  position: relative;
  top: calc(var(--line-height) / 2);
  width: calc(round(down, 100%, 1ch));
  border-collapse: collapse;
  margin: 0 0 calc(var(--line-height) * 2);
}

th,
td {
  border: var(--border-thickness) solid var(--text-color);
  padding:
    calc((var(--line-height) / 2)) calc(1ch - var(--border-thickness) / 2) calc((var(--line-height) / 2) - (var(--border-thickness)));
  line-height: var(--line-height);
  vertical-align: top;
  text-align: left;
}

table tbody tr:first-child>* {
  padding-top: calc((var(--line-height) / 2) - var(--border-thickness));
}

th {
  font-weight: var(--font-weight-bold);
}

/* Forms */
input,
button,
textarea {
  border: var(--border-thickness) solid var(--text-color);
  padding: calc(var(--line-height) / 2 - var(--border-thickness)) calc(1ch - var(--border-thickness));
  margin: 0;
  font: inherit;
  font-weight: inherit;
  height: calc(var(--line-height) * 2);
  width: auto;
  overflow: visible;
  background: var(--background-color);
  color: var(--text-color);
  line-height: normal;
  -webkit-font-smoothing: inherit;
  -moz-osx-font-smoothing: inherit;
  -webkit-appearance: none;
}

input[type=checkbox],
input[type=radio] {
  display: inline-grid;
  place-content: center;
  vertical-align: top;
  width: 2ch;
  height: var(--line-height);
  cursor: pointer;
}

input[type=checkbox]:checked:before,
input[type=radio]:checked:before {
  content: "";
  width: 1ch;
  height: calc(var(--line-height) / 2);
  background: var(--text-color);
}

input[type=radio],
input[type=radio]:before {
  border-radius: 100%;
}

button:focus,
input:focus {
  --border-thickness: 3px;
  outline: none;
}

input {
  width: calc(round(down, 100%, 1ch));
}

::placeholder {
  color: var(--text-color-alt);
  opacity: 1;
}

::-ms-input-placeholder {
  color: var(--text-color-alt);
}

button::-moz-focus-inner {
  padding: 0;
  border: 0;
}

button {
  text-transform: uppercase;
  font-weight: var(--font-weight-medium);
  cursor: pointer;
}

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

button:active {
  transform: translate(2px, 2px);
}

label {
  display: block;
  width: calc(round(down, 100%, 1ch));
  height: auto;
  line-height: var(--line-height);
  font-weight: var(--font-weight-medium);
  margin: 0;
}

label input {
  width: 100%;
}

.tree, .tree ul {
  position: relative;
  padding-left: 0;
  list-style-type: none;
  line-height: var(--line-height);
}
.tree ul {
  margin: 0;
}
.tree ul li {
  position: relative;
  padding-left: 1.5ch;
  margin-left: calc(1.5ch - var(--border-thickness));
  border-left: var(--border-thickness) solid var(--text-color);
}
.tree ul li:before {
  position: absolute;
  display: block;
  top: calc(var(--line-height) / 2);
  left: 0;
  content: "";
  width: 1ch;
  border-bottom: var(--border-thickness) solid var(--text-color);
}
.tree ul li:last-child {
  border-left: none;
  padding-left: calc(1.5ch + var(--border-thickness));
}
.tree ul li:last-child:after {
  position: absolute;
  display: block;
  top: 0;
  left: 0;
  content: "";
  height: calc(var(--line-height) / 2);
  border-left: var(--border-thickness) solid var(--text-color);
}

/* Code Blocks */
pre {
  white-space: pre;
  overflow-x: auto;
  margin: var(--line-height) 0;
  overflow-y: hidden;
}

pre,
code {
  font-family: var(--font-family);
}

code {
  font-weight: var(--font-weight-medium);
}

code:not(pre code) {
  background: var(--background-color-alt);
  padding: 0 0.5ch;
  border-radius: 2px;
  font-size: 0.95em;
  white-space: nowrap;
}

pre code {
  display: block;
  padding: calc(var(--line-height) / 2) 2ch;
  background: var(--background-color-alt);
  border-radius: 2px;
  overflow-x: auto;
  line-height: var(--line-height);
  margin: 0;
}

pre code::-webkit-scrollbar {
  height: calc(var(--line-height) / 2);
}

pre code::-webkit-scrollbar-thumb {
  background: var(--text-color-alt);
  border-radius: 2px;
}

pre code::-webkit-scrollbar-track {
  background: transparent;
}

/* Lists */
ul,
ol {
  padding: 0;
  margin: 0 0 var(--line-height);
}

ul {
  list-style-type: square;
  padding: 0 0 0 2ch;
}

ol {
  list-style-type: none;
  counter-reset: item;
  padding: 0;
}

ol ul,
ol ol,
ul ol,
ul ul {
  padding: 0 0 0 3ch;
  margin: 0;
}

ol li:before {
  content: counters(item, ".") ". ";
  counter-increment: item;
  font-weight: var(--font-weight-medium);
}

li {
  margin: 0;
  padding: 0;
}

li::marker {
  line-height: 0;
}

/* Blockquotes */
blockquote {
  margin: var(--line-height) 3ch;
  padding-left: 2ch;
  border-left: var(--border-thickness) solid var(--text-color);
  color: var(--text-color-alt);
}

blockquote p {
  margin: 0;
}

blockquote+blockquote {
  margin-top: 0;
}

/* Details */
details {
  border: var(--border-thickness) solid var(--text-color);
  padding: calc(var(--line-height) - var(--border-thickness)) 1ch;
  margin-bottom: var(--line-height);
}

summary {
  font-weight: var(--font-weight-medium);
  cursor: pointer;
}

details[open] summary {
  margin-bottom: var(--line-height);
}

details ::marker {
  display: inline-block;
  content: '▶';
  margin: 0;
}

details[open] ::marker {
  content: '▼';
}

details :last-child {
  margin-bottom: 0;
}

/* Media */
img,
video {
  display: block;
  width: 100%;
  object-fit: contain;
  overflow: hidden;
}

img {
  font-style: italic;
  color: var(--text-color-alt);
}

figure {
  margin: calc(var(--line-height) * 2) 3ch;
  overflow-x: auto;
  overflow-y: hidden;
}

figcaption {
  display: block;
  font-style: italic;
  margin-top: var(--line-height);
}

/* ==========================================================================
   Utilities
   ========================================================================== */

.width-min {
  width: 0%;
}

.width-auto {
  width: 100%;
}

.header {
  margin-bottom: calc(var(--line-height) * 2);
}

.header h1 {
  margin: 0;
}

.header tr td:last-child {
  text-align: right;
}


/* ==========================================================================
   Debug
   ========================================================================== */

.debug .debug-grid {
  --color: color-mix(in srgb, var(--text-color) 10%, var(--background-color) 90%);
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: -1;
  background-image:
    repeating-linear-gradient(var(--color) 0 1px, transparent 1px 100%),
    repeating-linear-gradient(90deg, var(--color) 0 1px, transparent 1px 100%);
  background-size: 1ch var(--line-height);
  margin: 0;
}

.debug .off-grid {
  background: rgba(255, 0, 0, 0.1);
}

.debug-toggle-label {
  text-align: right;
}


/* ==========================================================================
   Miscellaneous
   ========================================================================== */

/* Product Cards */
.product-card {
  display: flex;
  flex-direction: column;
}

.product-card > *:not(nav) {
  flex: 1 0 auto;
}

.product-card nav {
  display: flex;
  gap: 1ch;
  align-items: stretch;
  margin-top: auto;
}

.product-card nav a {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(var(--line-height) / 4) 0;
  background: var(--background-color-alt);
  text-decoration: none;
  min-height: calc(var(--line-height) * 1.5);
  margin-top: 0;
}

.product-card nav a:hover {
  background: var(--text-color);
  color: var(--background-color);
}

.product-card {
  border: var(--border-thickness) solid var(--text-color);
  padding: calc(var(--line-height) - var(--border-thickness)) 1ch;
  width: 100%;
  margin-top: var(--line-height);
}

.product-card img, .product-card video {
  margin: 0 -1ch;
  width: calc(100% + 2ch);
  max-height: calc(var(--line-height) * 8);
  object-fit: cover;
}

.product-card h3 {
  margin-top: var(--line-height);
  margin-bottom: 0;
  font-weight: var(--font-weight-bold);
}

.product-card p {
  color: var(--text-color-alt);
  margin-bottom: var(--line-height);
}

.product-card table {
  font-size: 0.9em;
  margin-bottom: var(--line-height);
}

/* Override the universal margin for nav elements and their children */
nav,
nav + *,
nav > *,
nav > * + * {
  margin-top: 0;
}

/* Also override for nav when it's inside a product-card */
.product-card nav {
  margin-top: auto; /* This pushes the nav to the bottom while removing the default margin */
}

/* Ensure nav children (links/buttons) don't have top margin */
.product-card nav > * {
  margin-top: 0;
}


/* Transformations */
.rotate-90 {
  transform: rotate(90deg);
  transform-origin: center center;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* theme-aware images */
.theme-aware-image {
  filter: none;
}

[data-theme="dark"] .theme-aware-image:not(.no-invert) {
  filter: invert(1) hue-rotate(180deg);
}

/* Optional: Add specific adjustments for certain images if needed */
[data-theme="dark"] .theme-aware-image.adjust-contrast {
  filter: invert(1) hue-rotate(180deg) contrast(0.8);
}
