/* Design tokens — palette, type scale and measure taken from darioamodei.com */
:root {
  --ivory-light: #faf9f5;
  --ivory-medium: #f0eee6;
  --slate-dark: #1f1e1d;
  --slate-light: #5e5d59;
  --cloud-medium: #b0aea5;
  --cloud-light: #d1cfc5;

  --bg: var(--ivory-medium);
  --text: var(--slate-dark);
  --text-secondary: var(--slate-light);
  --link-hover: var(--slate-light);
  --border: var(--cloud-light);
  --footnote-bg: #00000014;

  --font: "Newsreader", "Times New Roman", Georgia, serif;
  --measure: 38.75rem;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: var(--slate-dark);
    --text: var(--ivory-medium);
    --text-secondary: var(--cloud-medium);
    --link-hover: var(--cloud-medium);
    --border: var(--slate-light);
    --footnote-bg: #ffffff26;
  }
}

:root[data-theme="dark"] {
  --bg: var(--slate-dark);
  --text: var(--ivory-medium);
  --text-secondary: var(--cloud-medium);
  --link-hover: var(--cloud-medium);
  --border: var(--slate-light);
  --footnote-bg: #ffffff26;
}

/* Base */
*, *::before, *::after { box-sizing: border-box; }

html { background: var(--bg); }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-optical-sizing: auto;
  font-size: 1.25rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background-color .2s, color .2s;
}

::selection { background: rgba(0, 100, 255, .26); color: inherit; }

p { margin: 0 0 1em; }

a {
  color: var(--text);
  text-decoration: underline;
  text-underline-offset: .1em;
  text-decoration-thickness: .08em;
  transition: color .2s linear;
}
a:hover { color: var(--link-hover); }

img { max-width: 100%; height: auto; }

.container {
  max-width: var(--measure);
  margin-inline: auto;
  padding-inline: 20px;
}

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* Header */
.header {
  z-index: 5;
  background: var(--bg);
  margin-top: 15px;
  margin-bottom: 25px;
  padding-block: 15px 10px;
  transition: background-color .2s;
}
.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.header-name {
  margin: 0;
  font-size: 1.44em;
  font-weight: 600;
  line-height: 1;
}
.header-name a { text-decoration: none; color: inherit; }

@media (max-width: 991px) {
  .header { position: sticky; top: 0; }
}

/* Dark / light toggle */
.toggle-switch {
  position: relative;
  flex: none;
  width: 40px;
  height: 20px;
  transform: translateY(-2px);
}
.toggle-checkbox {
  position: absolute;
  opacity: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  cursor: pointer;
}
.toggle-label {
  position: absolute;
  inset: 0;
  border: 1px solid var(--slate-dark);
  background: var(--ivory-light);
  border-radius: 2rem;
  pointer-events: none;
}
.toggle-label::before {
  content: "";
  position: absolute;
  left: 2px;
  bottom: 2px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--slate-dark);
}
.toggle-label.has-transition::before { transition: transform .2s; }
.toggle-checkbox:checked + .toggle-label::before { transform: translateX(20px); }
.toggle-checkbox:focus-visible + .toggle-label {
  outline: 2px solid var(--text);
  outline-offset: 2px;
}

/* Home */
.section { margin-top: 1.3em; }
.section:last-child { margin-bottom: 3em; }

.section-title {
  margin: 0 0 .7em;
  font-size: 1.2em;
  font-weight: 600;
  line-height: 1.2;
}

.bullet-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: .8em;
}
.bullet-list li { padding-left: 1em; }
.bullet-list li::before {
  content: "•";
  display: inline-block;
  margin-left: -.7em;
  margin-right: .3em;
}
.bullet-list .note { margin-left: .25em; }
.muted { color: var(--text-secondary); font-style: italic; }

/* Intro "More" expander: open on desktop, collapsed on phones */
.intro-ellipsis, .intro-more { display: none; }
.intro-more {
  background: none;
  border: 0;
  padding: 0;
  font: inherit;
  color: inherit;
  text-decoration: underline;
  text-underline-offset: .1em;
  text-decoration-thickness: .08em;
  cursor: pointer;
}
.intro-more:hover { color: var(--link-hover); }

@media (max-width: 767px) {
  .intro:not(.is-open) .intro-rest { display: none; }
  .intro:not(.is-open) .intro-ellipsis,
  .intro:not(.is-open) .intro-more { display: inline; }
  .intro:not(.is-open) .intro-period { display: none; }
}

/* Essay */
.post-header { margin-bottom: 2.5em; }
.post-title {
  margin: .6em 0 .1em;
  font-size: 3.1em;
  font-weight: 700;
  line-height: 1.1;
  text-wrap: balance;
}
.post-subtitle { font-size: 1.1em; font-style: italic; }
.post-date {
  margin: 2em 0 1em;
  font-size: .9em;
  color: var(--text-secondary);
}

@media (max-width: 767px) {
  .post-title { font-size: 2.4em; }
}

.rich-text { text-wrap: pretty; margin-bottom: 3em; }
.rich-text h2 {
  margin: 1.4em 0 .5em;
  font-size: 1.6em;
  font-weight: 600;
  line-height: 1.2;
  text-wrap: balance;
}
.rich-text h3 {
  margin: 1.4em 0 .7em;
  font-size: 1.2em;
  font-weight: 600;
  line-height: 1.2;
}
.rich-text ul, .rich-text ol { padding-left: 1.25em; margin: 0 0 1em; }
.rich-text li { margin-bottom: .4em; }
.rich-text blockquote {
  margin: 2em 0;
  padding: .25em 0 .1em 1.25em;
  border-left: 1px solid var(--border);
  font-style: italic;
  line-height: 1.5;
}
.rich-text figure { margin: 2.5em 0; }
.rich-text figcaption {
  margin-top: .75em;
  font-size: .9em;
  color: var(--text-secondary);
}

hr.dinkus { border: 0; margin: 0; }
hr.dinkus::after {
  content: "\2042";
  display: block;
  margin: 1em auto;
  font-size: 1.5em;
  font-weight: 200;
  text-align: center;
}

/* Numbers tables for financials */
.table-wrap { overflow-x: auto; margin: 2em 0; }
.rich-text table {
  width: 100%;
  border-collapse: collapse;
  font-size: .85em;
  font-variant-numeric: tabular-nums lining-nums;
}
.rich-text th, .rich-text td {
  padding: .45em .6em;
  border-bottom: 1px solid var(--border);
  text-align: right;
  white-space: nowrap;
}
.rich-text th:first-child, .rich-text td:first-child { text-align: left; }
.rich-text th { font-weight: 600; }

/* Footnotes */
sup.fn { line-height: 0; }
sup.fn a {
  margin: 0 2px;
  padding: 3px 3px 1px;
  border-radius: 4px;
  background: var(--footnote-bg);
  font-size: .75rem;
  font-weight: 500;
  text-decoration: none;
}
.footnotes {
  margin-top: 3em;
  padding-top: 1.5em;
  border-top: 1px solid var(--border);
  font-size: .9em;
}
.footnotes h2 { font-size: 1.2em; margin-top: 0; }
.footnotes li { margin-bottom: 1em; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; }
}