@import url('https://fonts.googleapis.com/css2?family=Fira+Code:wght@300;400;500;700&family=JetBrains+Mono:wght@300;400;500;700&display=swap');
@layer base {

/* Command-line theme
 *
 * The terminal theme, plus: each typed command and its output sits in a
 * terminal window (a `.term{}` block: title bar with traffic lights, label from
 * .meta{label: ...} or --term-label); the cursor follows the last revealed line; a nexus inside a
 * window prints line by line once its command has finished typing; left-aligned
 * uppercase headings; a takeaway bar (`.takeaway{}`), a source line (`.source{}`) and
 * dim captions (`.dim`); and the palette and flare for `.bars{}` charts.
 */

/* Fira Code and JetBrains Mono fonts */

/* Global */
html {
  min-height: 100%;
  overflow: hidden;
}

body {
  margin: 0;
  padding: 0;
  color: #d4d4d4;
  background-color: #0d0d0d;
  overflow: hidden;
  font-family: 'Fira Code', 'JetBrains Mono', 'Consolas', monospace;
}

/* Presentation viewport wrapper - fixed 2K dimensions */
.presentation-viewport {
  position: absolute;
  width: 2560px;
  height: 1440px;
  transform-origin: top left;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background-color: #1e1e1e;
  box-shadow: 0 0 40px rgba(78, 201, 176, 0.1);
  border: 1px solid #2d2d30;
}

/* Form layout container */
.formLayout {
  background-color: #1e1e1e;
  border: none;
  padding: 0;
  flex: 1;
  color: #d4d4d4;
  font-size: 32px;
  overflow-x: hidden;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

/* Slide */
.slide {
  display: flex;
  flex-direction: column;
  justify-content: center;
  flex: 1;
  padding: 50px;
  --slide-density-scale: 1.1;
  font-size: calc(
    32px * var(--deck-typography-scale, 1) *
    var(--slide-density-scale)
  );
}

.slide.hero {
  --slide-density-scale: 1.32;
}

.slide.roomy {
  --slide-density-scale: 1.2;
}

.slide.dense {
  --slide-density-scale: 0.94;
}

.slide.compact {
  --slide-density-scale: 0.82;
}

.slide h1 {
  font-size: 2.6em;
  margin: 0.3em 0;
  text-align: left;
  color: #4ec9b0;
  font-weight: 500;
  text-shadow: 0 0 24px rgba(78, 201, 176, 0.45);
  text-transform: uppercase;
  letter-spacing: 3px;
  line-height: 1.1;
  border-bottom: 2px solid #4ec9b0;
  padding-bottom: 0.15em;
  margin-bottom: 0.2em;
}

.slide h2 {
  font-size: 1.05em;
  margin: 0.3em 0;
  text-align: left;
  color: #9cdcfe;
  font-weight: 400;
  letter-spacing: 0.5px;
  margin-top: 0;
  margin-bottom: 0.8em;
}

.slide h3 {
  font-size: 1.8em;
  margin: 0.3em 0;
  color: #ce9178;
  font-weight: 400;
}

.slide p {
  font-size: 1.4em;
  line-height: 1.6;
  margin: 0.5em 0;
  color: #d4d4d4;
}

.slide ul, .slide ol {
  font-size: 1.3em;
  line-height: 1.7;
  margin: 0.5em 0;
}

.slide li {
  margin: 0.3em 0;
  color: #d4d4d4;
}

/* Code blocks */
/* Code blocks. Typewriters are terminal lines, not listings: no box. */
.slide pre:not([id^="typewriter-"]) {
  font-size: 1.2em;
  line-height: 1.4;
  max-width: 100%;
  overflow: auto;
  background-color: #252526;
  border: 1px solid #3e3e42;
  border-radius: 4px;
  padding: 20px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.slide code {
  font-family: 'Fira Code', 'JetBrains Mono', 'Consolas', monospace;
  color: #ce9178;
  background-color: #252526;
  padding: 2px 6px;
  border-radius: 3px;
}

.slide pre code {
  background-color: transparent;
  padding: 0;
  color: #d4d4d4;
}

/* Emphasis and strong */
.slide strong {
  color: #4ec9b0;
  font-weight: 500;
}

.slide em {
  color: #9cdcfe;
  font-style: italic;
}

/* Links */
a {
  color: #4ec9b0;
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: #6ee7d2;
  text-decoration: underline;
}

/* Slide progress bar */
#slideProgress {
  width: 100%;
  background-color: #2d2d30;
}

#slideBar {
  width: 1%;
  height: 5px;
  background-color: #4ec9b0;
  box-shadow: 0 0 10px rgba(78, 201, 176, 0.5);
}

/* Alignment modifiers */
.align-left {
  text-align: left;
}

.align-center {
  text-align: center;
}

.align-center ul,
.align-center ol {
  list-style-position: inside;
}

.align-right {
  text-align: right;
}

.align-right ul,
.align-right ol {
  list-style-position: inside;
}

/* Column layout support */
.slide .column {
  flex: 1;
  padding: 0 15px;
  box-sizing: border-box;
}

.slide .column:first-of-type {
  padding-left: 0;
}

.slide .column:last-of-type {
  padding-right: 0;
}

/* Buttons */
button {
  background-color: #2d2d30;
  border: 1px solid #3e3e42;
  color: #d4d4d4;
  font-family: 'Fira Code', 'JetBrains Mono', 'Consolas', monospace;
  font-size: 1em;
  font-weight: 400;
  padding: 10px 20px;
  cursor: pointer;
  transition: background-color 0.2s, border-color 0.2s;
}

button:hover {
  background-color: #3e3e42;
  border-color: #4ec9b0;
}

button:active {
  background-color: #252526;
}

/* Footer bar */
.footer-bar {
  background-color: #252526;
  border-top: 1px solid #3e3e42;
  padding: 15px 50px;
  color: #858585;
  font-size: 18px;
  overflow: hidden;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer {
  color: #858585;
  font-size: 18px;
}

/* Tables */
td, th {
  border: 1px solid #3e3e42;
  padding: 0.5rem;
  text-align: center;
  color: #d4d4d4;
}

th {
  background-color: #2d2d30;
  color: #4ec9b0;
  font-weight: 500;
}

/* Images */
img {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
}

/* Selection */
::selection {
  background: #4ec9b0;
  color: #1e1e1e;
}

/* Behavior Effects */

/* Snippet/bullet visibility */
.snippet {
  color: #d4d4d4;
  margin-bottom: 0.7rem;
}

/* TTY/Terminal style */
.tty {
  color: #d4d4d4;
  background-color: #1e1e1e;
}

/* Line positioning for effects */
.line-1 {
  position: relative;
  top: 5%;
  width: 50em;
  margin: 0 auto;
  font-size: 180%;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  transform: translateY(-50%);
}

/* Typewriter animation */
.anim-typewriter {
  animation: typewriter 4s steps(44) 1s 1 normal both,
             blinkTextCursor 500ms steps(44) infinite normal;
}

@keyframes typewriter {
  from { width: 0; }
  to { width: 50em; }
}

@keyframes blinkTextCursor {
  from { border-right-color: #4ec9b0; }
  to { border-right-color: transparent; }
}

/* Typing effect with cursor */
.typing {
  font-size: 2em;
  margin: 0;
  font-family: 'Fira Code', 'JetBrains Mono', 'Consolas', monospace;
}

.typing:after {
  content: "|";
  animation: blink 500ms linear infinite alternate;
}

@-webkit-keyframes blink {
  0% { opacity: 0; }
  100% { opacity: 1; }
}

@-moz-keyframes blink {
  0% { opacity: 0; }
  100% { opacity: 1; }
}

@keyframes blink {
  0% { opacity: 0; }
  100% { opacity: 1; }
}

/* Typewriter effect for pre/code blocks */
.typewriter pre {
  overflow: hidden;
  border-right: .15em solid #4ec9b0;
  white-space: nowrap;
  margin: 0 auto;
  letter-spacing: .15em;
  animation:
    typing 3.5s steps(40, end),
    blink-caret .75s step-end infinite;
  color: #d4d4d4;
}

/* Typewriter elements by ID */
pre[id^="typewriter-"] {
  color: #d4d4d4;
  font-family: 'Fira Code', 'JetBrains Mono', 'Consolas', monospace;
  margin: 0.3em 0;
}

/* Console highlighting (assets/js/slidedown.js consoleHighlight) */
.tw-prompt { color: #6a9955; }
.tw-cmd    { color: #4ec9b0; }
.tw-arg    { color: #d4d4d4; }
.tw-flag   { color: #9cdcfe; }
.tw-value  { color: #ce9178; }
.tw-str    { color: #ce9178; }
.tw-op     { color: #c586c0; }
.tw-out    { color: #858585; }

@keyframes typing {
  from { width: 0; }
  to { width: 100%; }
}

@keyframes blink-caret {
  from, to { border-color: transparent; }
  50% { border-color: #4ec9b0; }
}

/* Blinking text */
.blinking {
  animation: blinkingText 1.2s infinite;
}

@keyframes blinkingText {
  0% { color: #d4d4d4; }
  49% { color: #d4d4d4; }
  60% { color: transparent; }
  99% { color: transparent; }
  100% { color: #d4d4d4; }
}

/* Syntax highlighting helpers */
.var-highlight {
  color: #9cdcfe;
}

.string-highlight {
  color: #ce9178;
}

/* Container for pre alignment */
.container {
  text-align: left;
  font-size: 40px;
}

.container pre {
  display: inline-block;
  text-align: left;
}

/* Watermark system */
.slide .watermark {
  position: absolute;
  pointer-events: none;
  z-index: 0;
  opacity: 0.5;
}

/* Watermark positioning - 9 positions */
.watermark.top-left {
  top: 30px;
  left: 30px;
}

.watermark.top-center {
  top: 30px;
  left: 50%;
  transform: translateX(-50%);
}

.watermark.top-right {
  top: 30px;
  right: 30px;
}

.watermark.center-left {
  top: 50%;
  left: 30px;
  transform: translateY(-50%);
}

.watermark.center-right {
  top: 50%;
  right: 30px;
  transform: translateY(-50%);
}

.watermark.bottom-left {
  bottom: 30px;
  left: 30px;
}

.watermark.bottom-center {
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
}

.watermark.bottom-right {
  bottom: 30px;
  right: 30px;
}

/* Center position (both axes) */
.watermark.center {
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

/* -------------------------------------- */
/* Nexus navigation                       */
/* -------------------------------------- */

/* The bracketed index is generated, not authored, so the number shown
   is always the digit key that triggers it. Renumbering a menu is
   therefore impossible to get wrong. */
.sd-nexus {
  counter-reset: sd-jump;
  display: block;
}

.sd-jump {
  color: #d4d4d4;
  text-decoration: none;
  border-bottom: 1px dashed transparent;
  transition: color 0.15s ease, border-color 0.15s ease, opacity 0.2s ease;
}

.sd-jump::before {
  counter-increment: sd-jump;
  content: "[" counter(sd-jump) "] ";
  color: #dcdcaa;
  font-weight: bold;
}

.sd-jump:hover {
  color: #4ec9b0;
  border-bottom-color: #4ec9b0;
  text-decoration: none;
}

.sd-jump:focus-visible {
  outline: 1px solid #4ec9b0;
  outline-offset: 4px;
}

.sd-jump--visited {
  opacity: 0.45;
}

/* Choosing an entry: an inverse-video flash, twice, as old terminal menus
   did, before the zoom carries it away. The beat is lengthened to fit. */
:root {
  --sd-hit-ms: 360;
}

@keyframes sd-terminal-hit {
  0%, 22%   { background: #4ec9b0; color: #141414; }
  23%, 45%  { background: transparent; color: #4ec9b0; }
  46%, 100% { background: #4ec9b0; color: #141414; }
}

.sd-jump--selected {
  filter: none;
  outline: 1px solid #4ec9b0;
  outline-offset: 0.25em;
  border-radius: 2px;
  animation: sd-terminal-hit 0.36s steps(1, end) 1 both;
}

/* Up/Down cursor on a nexus: a selection box, as in a terminal menu. */
.sd-jump--cursor {
  color: #4ec9b0;
  text-decoration: none;
  filter: none;
  outline: 1px solid #4ec9b0;
  outline-offset: 0.25em;
  border-radius: 2px;
  background: rgba(78, 201, 176, 0.08);
}

.sd-jump--visited::before {
  color: #6a9955;
}

/* ---- Layout ---- */
.slide .body {
  font-size: 1.12em;
  line-height: 1.4;
}

.snippet::before {
  color: #6a9955;
}

.navbar-container {
  display: none;
}

.container > br {
  display: none;
}


/* ---- Takeaway, source, captions ---- */
.prompt,
.takeaway {
  color: #dcdcaa;
  background: rgba(220, 220, 170, 0.08);
  border-left: 4px solid #dcdcaa;
  padding: 14px 18px;
  margin-top: 28px;
  letter-spacing: 1px;
}

.dim {
  color: #6a9955;
}

.src,
.source {
  font-size: 0.5em;
  color: #6a9955;
  margin-top: 0.6em;
  letter-spacing: 0.5px;
}

.num {
  color: #dcdcaa;
  font-weight: bold;
}

.cursor {
  display: inline-block;
  color: #4ec9b0;
  font-weight: bold;
  animation: blink 500ms linear infinite alternate;
}


/* ---- Nexus inside a terminal window: entries print line by line after the command finishes ---- */
.term .sd-nexus {
  margin-top: 0.6em;
}

.term .sd-nexus > div {
  margin-bottom: 0.45rem;
  padding-left: 1.2em;
}

.term:has(> .snippet:not(.sl-hidden)) > pre::after, .term:has(> .sd-nexus) > pre.tw-done::after {
  content: none;
  animation: none;
}

.term > pre:not(.tw-done) ~ .sd-nexus > div, .term > pre:not(.tw-done) ~ .sd-nexus::after {
  visibility: hidden;
}

.term > .sd-nexus::after {
  content: '▊';
  color: #4ec9b0;
  animation: blink 500ms linear infinite alternate;
  display: block;
  padding-left: 1.2em;
}

.term > pre.tw-done ~ .sd-nexus::after {
  transition: visibility 0s linear 0.6s;
}

.term > pre.tw-done ~ .sd-nexus > div:nth-child(1) {
  transition: visibility 0s linear 0.00s;
}

.term > pre.tw-done ~ .sd-nexus > div:nth-child(2) {
  transition: visibility 0s linear 0.07s;
}

.term > pre.tw-done ~ .sd-nexus > div:nth-child(3) {
  transition: visibility 0s linear 0.14s;
}

.term > pre.tw-done ~ .sd-nexus > div:nth-child(4) {
  transition: visibility 0s linear 0.21s;
}

.term > pre.tw-done ~ .sd-nexus > div:nth-child(5) {
  transition: visibility 0s linear 0.28s;
}

.term > pre.tw-done ~ .sd-nexus > div:nth-child(6) {
  transition: visibility 0s linear 0.35s;
}

.term > pre.tw-done ~ .sd-nexus > div:nth-child(7) {
  transition: visibility 0s linear 0.42s;
}

.term > pre.tw-done ~ .sd-nexus > div:nth-child(8) {
  transition: visibility 0s linear 0.49s;
}

.term > pre.tw-done ~ .sd-nexus > div:nth-child(9) {
  transition: visibility 0s linear 0.56s;
}

.term > pre.tw-done ~ .sd-nexus > div:nth-child(10) {
  transition: visibility 0s linear 0.63s;
}

.term > pre.tw-done ~ .sd-nexus > div:nth-child(11) {
  transition: visibility 0s linear 0.70s;
}

.term > pre.tw-done ~ .sd-nexus > div:nth-child(12) {
  transition: visibility 0s linear 0.77s;
}


/* ---- Terminal window ---- */
.term {
  position: relative;
  background: #141414;
  border: 1px solid #3e3e42;
  border-radius: 10px;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.55);
  padding: 88px 40px 30px 40px;
  margin: 30px 0 10px 0;
  width: 100%;
  box-sizing: border-box;
}

.term::before {
  content: var(--term-label, var(--sd-label, 'terminal'));
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 52px;
  line-height: 52px;
  text-align: center;
  font-size: 0.6em;
  letter-spacing: 1px;
  color: #858585;
  background: radial-gradient(circle at 30px 50%, #ff5f57 9px, transparent 10px), radial-gradient(circle at 60px 50%, #febc2e 9px, transparent 10px), radial-gradient(circle at 90px 50%, #28c840 9px, transparent 10px), #2d2d30;
  border-bottom: 1px solid #3e3e42;
  border-radius: 10px 10px 0 0;
}

.term > pre {
  margin-bottom: 0.5em;
}

.term .snippet {
  margin-bottom: 0.35rem;
  padding-left: 2.8em;
  text-indent: -1.6em;
}

.term .snippet::before {
  display: inline-block;
  width: 1.6em;
  margin-right: 0;
  text-indent: 0;
}

.term .snippet:has(pre) {
  padding-left: 0;
  text-indent: 0;
  margin-top: 1em;
  margin-bottom: 0.5em;
}

.term .snippet:has(pre)::before {
  display: none;
}

.term > pre::after {
  content: '▊';
  color: #4ec9b0;
  animation: blink 500ms linear infinite alternate;
}

.term > .snippet:not(.sl-hidden, :has(~ .snippet:not(.sl-hidden)))::after {
  content: '▊';
  color: #4ec9b0;
  animation: blink 500ms linear infinite alternate;
  margin-left: 0.15em;
}

.slide .term pre {
  background: none;
  border: none;
  box-shadow: none;
  padding: 0;
  margin: 0;
  font-size: 1em;
  color: #4ec9b0;
}


/* ---- Bar charts (.bars{}) ----
   Layout and growth come from slidedown's base CSS; the theme supplies the
   palette .color{} names resolve to, the default bar and value colours, and
   the flare that rides a growing bar's leading edge. */
:root {
  --sd-color-accent: #4ec9b0;
  --sd-color-red: #f14c4c;
  --sd-color-magenta: #c586c0;
  --sd-color-yellow: #dcdcaa;
  --sd-color-blue: #9cdcfe;
  --sd-color-green: #6a9955;
  --sd-color-orange: #ce9178;
  --sd-color-muted: #858585;
}

.bar {
  color: #4ec9b0;
}

.pct {
  color: #dcdcaa;
}

.grow::after {
  content: '';
  position: absolute;
  top: 12%;
  bottom: 12%;
  right: -0.25ch;
  width: 0.5ch;
  border-radius: 40%;
  background: #ffffff;
  box-shadow: 0 0 10px 3px currentColor, 0 0 28px 10px currentColor;
  opacity: 1;
  pointer-events: none;
}

.snippet:not(.sl-hidden) .grow::after {
  opacity: 0;
  transition: opacity 0.45s ease-out 0.85s;
}

.snippet:not(.sl-hidden) .grow.g2::after {
  transition: opacity 0.45s ease-out 1.1s;
}

.snippet:not(.sl-hidden) .grow.g3::after {
  transition: opacity 0.45s ease-out 1.35s;
}

.snippet:not(.sl-hidden) .grow.g4::after {
  transition: opacity 0.45s ease-out 1.6s;
}

}