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

:root {
  --bg: #f3efe6;
  --fg: #1c1914;
  --muted: color-mix(in srgb, var(--fg) 65%, var(--bg));
  --rule: color-mix(in srgb, var(--fg) 12%, var(--bg));
  --code: color-mix(in srgb, var(--fg) 6%, var(--bg));
  --font: "Newsreader", "Iowan Old Style", Palatino, serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --fade: 0.38s var(--ease);
  --chrome: 2.75rem;
}

html[data-theme="dark"] {
  --bg: #131210;
  --fg: #ece7dc;
}

html {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  color-scheme: light;
  scrollbar-width: thin;
  scrollbar-color: var(--rule) transparent;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  transition: background var(--fade), color var(--fade);
}

html[data-theme="dark"] {
  color-scheme: dark;
}

body {
  margin: 0;
  overflow-x: hidden;
  background: transparent;
  color: inherit;
  font: 1.3125rem/1.55 var(--font);
  font-optical-sizing: auto;
  -webkit-font-smoothing: antialiased;
  transition: color var(--fade);
}

.chrome {
  position: fixed;
  top: max(0.7rem, env(safe-area-inset-top));
  right: max(0.55rem, env(safe-area-inset-right));
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.chrome button {
  width: var(--chrome);
  height: var(--chrome);
  display: grid;
  place-items: center;
  padding: 0;
  border: 0;
  background: none;
  color: inherit;
  cursor: pointer;
  opacity: 0.5;
  transition: opacity 0.2s var(--ease);
}

.chrome button:disabled {
  cursor: wait;
  opacity: 0.35;
}

.chrome button:hover:not(:disabled),
.chrome button:focus-visible {
  opacity: 0.8;
}

.chrome button:focus-visible {
  outline: 1px solid var(--fg);
  outline-offset: 0.2rem;
}

.chrome svg {
  grid-area: 1 / 1;
  width: 1.25rem;
  height: 1.25rem;
  margin: auto;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0;
  transition: opacity var(--fade);
  pointer-events: none;
}

body:not(.read) .icon-eye,
body.read .icon-pencil,
html[data-theme="light"] .icon-moon,
html[data-theme="dark"] .icon-sun {
  opacity: 1;
}

.repo {
  position: fixed;
  right: max(0.55rem, env(safe-area-inset-right));
  bottom: max(0.7rem, env(safe-area-inset-bottom));
  z-index: 2;
  width: var(--chrome);
  height: var(--chrome);
  display: grid;
  place-items: center;
  color: inherit;
  opacity: 0.5;
  transition: opacity 0.2s var(--ease);
}

.repo:hover,
.repo:focus-visible {
  opacity: 0.8;
}

.repo:focus-visible {
  outline: 1px solid var(--fg);
  outline-offset: 0.2rem;
}

.repo svg {
  width: 1.25rem;
  height: 1.25rem;
  fill: currentColor;
}

.page {
  display: grid;
  width: min(38rem, 100%);
  margin: 0 auto;
  padding:
    max(2.6rem, calc(env(safe-area-inset-top) + 2.25rem))
    max(3.6rem, calc(env(safe-area-inset-right) + 1.25rem))
    6rem
    max(1.5rem, env(safe-area-inset-left));
}

#source,
#preview {
  grid-area: 1 / 1;
  width: 100%;
  min-width: 0;
  max-width: 100%;
  transition: opacity var(--fade), visibility var(--fade);
}

#source {
  display: block;
  field-sizing: content;
  min-height: calc(100dvh - 8.6rem);
  margin: 0;
  padding: 0;
  border: 0;
  outline: none;
  resize: none;
  overflow: hidden;
  background: transparent;
  color: inherit;
  caret-color: var(--fg);
  font: inherit;
  tab-size: 2;
}

#source::selection,
#preview ::selection {
  background: var(--fg);
  color: var(--bg);
}

#preview {
  overflow-wrap: anywhere;
  word-break: break-word;
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
}

body.read #preview {
  visibility: visible;
  opacity: 1;
  pointer-events: auto;
}

body.read #source {
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
}

#preview > :first-child {
  margin-top: 0;
}

#preview h1,
#preview h2,
#preview h3 {
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
  overflow-wrap: break-word;
}

#preview h1 {
  font-size: 2em;
  margin: 0 0 0.7em;
}

#preview h2 {
  font-size: 1.4em;
  margin: 1.55em 0 0.5em;
}

#preview h3 {
  font-size: 1.12em;
  margin: 1.35em 0 0.4em;
}

#preview p,
#preview ul,
#preview ol,
#preview blockquote,
#preview pre,
#preview table,
#preview .katex-display {
  margin: 0 0 1.05em;
}

#preview ul,
#preview ol {
  padding-left: 1.2em;
}

#preview a {
  color: inherit;
}

#preview hr {
  border: 0;
  height: 1px;
  margin: 2.1em 0;
  background: var(--rule);
}

#preview blockquote {
  margin-left: 0;
  padding-left: 1rem;
  border-left: 1.5px solid var(--fg);
  color: var(--muted);
}

#preview code {
  font-family: var(--mono);
  font-size: 0.78em;
}

#preview :not(pre) > code {
  padding: 0.05em 0.28em;
  background: var(--code);
}

#preview pre {
  padding: 1rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  background: var(--code);
  line-height: 1.55;
  max-width: 100%;
}

#preview pre code {
  background: none;
  padding: 0;
  display: block;
  min-width: min-content;
}

#preview pre.shiki {
  background: var(--code) !important;
  white-space: normal;
}

#preview pre.shiki .line {
  display: block;
  white-space: pre;
}

#preview pre.shiki .line:last-child:empty {
  display: none;
}

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

#preview table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92em;
}

#preview th,
#preview td {
  text-align: left;
  padding: 0.35em 0.55em 0.35em 0;
  border-bottom: 1px solid var(--rule);
}

#preview .katex-display {
  overflow-x: auto;
  overflow-y: hidden;
  max-width: 100%;
}

@media (max-width: 40rem) {
  body {
    font-size: 1.15rem;
  }

  .page {
    padding-left: max(1.15rem, env(safe-area-inset-left));
  }
}

@media (prefers-reduced-motion: reduce) {
  html,
  body,
  #source,
  #preview,
  .chrome button,
  .chrome svg,
  .repo {
    transition: none;
  }
}

@media print {
  .chrome,
  .repo,
  #source {
    display: none !important;
  }

  html {
    background: #fff;
    color: #111;
  }

  #preview {
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
    pointer-events: none;
  }

  #preview .print-fallback {
    margin: 0;
    padding: 0;
    background: none;
    font: inherit;
    white-space: pre-wrap;
    overflow: visible;
  }
}