/* ─────────────────────────────────────────────
   log_coffee! — UI_SPEC theme adaptation
   dark, monospace, minimal
   ───────────────────────────────────────────── */

/* === fonts === */

@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 400;
  src: url(https://fonts.gstatic.com/s/ibmplexmono/v12/-F63fjptAgt5VM-kVkqdyU8n1i8q1w.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 500;
  src: url(https://fonts.gstatic.com/s/ibmplexmono/v12/-F6qfjptAgt5VM-kVkqdyU8n3twJ0n1g.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 700;
  src: url(https://fonts.gstatic.com/s/ibmplexmono/v12/-F6qfjptAgt5VM-kVkqdyU8n3oQO0n1g.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'IBM Plex Mono';
  font-style: italic;
  font-weight: 400;
  src: url(https://fonts.gstatic.com/s/ibmplexmono/v12/-F6pfjptAgt5VM-kVkqdyU8n1ioa1n1g.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* === ayu theme variable overrides === */

.ayu {
  /* backgrounds */
  --bg: #0a0a0a;
  --fg: #e0e0e0;

  /* sidebar */
  --sidebar-bg: #111111;
  --sidebar-fg: #aaaaaa;
  --sidebar-non-existant: #444444;
  --sidebar-active: #ffffff;
  --sidebar-spacer: #222222;
  --sidebar-header-border-color: #444444;

  --scrollbar: #2a2a2a;

  /* chrome */
  --icons: #444444;
  --icons-hover: #e0e0e0;

  /* links — white accent */
  --links: #e0e0e0;

  /* inline code */
  --inline-code-color: #aaaaaa;

  /* theme popup */
  --theme-popup-bg: #111111;
  --theme-popup-border: #222222;
  --theme-hover: #181818;

  /* blockquotes */
  --quote-bg: #111111;
  --quote-border: #222222;

  /* tables */
  --table-border-color: #222222;
  --table-header-bg: #181818;
  --table-alternate-bg: #0f0f0f;

  /* search */
  --searchbar-border-color: #222222;
  --searchbar-bg: #111111;
  --searchbar-fg: #e0e0e0;
  --searchbar-shadow-color: #222222;
  --searchresults-header-fg: #666666;
  --searchresults-border-color: #222222;
  --searchresults-li-bg: #181818;
  --search-mark-bg: #2a2a2a;

  --warning-border: #f87171;

  --copy-button-filter: invert(40%) brightness(80%);
  --copy-button-filter-hover: invert(100%);

  --footnote-highlight: #444444;
  --overlay-bg: rgba(0, 0, 0, 0.7);

  --blockquote-note-color: #aaaaaa;
  --blockquote-tip-color: #4ade80;
  --blockquote-important-color: #aaaaaa;
  --blockquote-warning-color: #f87171;
  --blockquote-caution-color: #f87171;
}

/* === global typography === */

:root {
  --mono-font: 'IBM Plex Mono', monospace;
}

html {
  font-family: 'IBM Plex Mono', monospace !important;
  -webkit-font-smoothing: antialiased;
}

body {
  font-size: 1.5rem;
}

/* all text inherits monospace */
.sidebar-iframe-inner,
.content,
.content p,
.content ol,
.content ul,
.content a,
.content h1,
.content h2,
.content h3,
.content h4,
.content h5,
.content h6,
table,
input,
button,
.menu-title {
  font-family: 'IBM Plex Mono', monospace !important;
}

/* === content typography === */

.content p,
.content ol,
.content ul {
  line-height: 1.7;
  color: #aaaaaa;
}

.content h1 {
  font-weight: 500;
  letter-spacing: -0.02em;
  color: #e0e0e0;
}

.content h2 {
  font-weight: 500;
  letter-spacing: -0.02em;
  color: #e0e0e0;
  border-bottom: 1px solid #222222;
  padding-bottom: 0.3em;
}

.content h3,
.content h4 {
  font-weight: 500;
  color: #e0e0e0;
}

/* links — subtle, no underline until hover */
.content a:link,
.content a:visited {
  color: #e0e0e0;
  text-decoration: none;
  border-bottom: 1px solid #444444;
  transition: border-color 0.15s;
}

.content a:hover {
  text-decoration: none;
  border-bottom-color: #e0e0e0;
}

/* === code === */

code {
  font-family: 'IBM Plex Mono', monospace !important;
}

:not(pre) > .hljs {
  background-color: #181818;
  border: 1px solid #222222;
  border-radius: 3px;
  padding: 0.1em 0.35em;
}

pre {
  border-radius: 6px;
  border: 1px solid #222222;
}

pre > code {
  background-color: #111111;
  border-radius: 6px;
}

/* copy button */
pre > .buttons button {
  border-color: #222222;
  background-color: #111111;
  color: #444444;
}

pre > .buttons button:hover {
  color: #e0e0e0;
  border-color: #444444;
  background-color: #181818;
}

/* === tables === */

table {
  border: 1px solid #222222;
  border-radius: 6px;
  overflow: hidden;
}

table td {
  padding: 6px 16px;
  border-color: #222222;
  font-size: 0.9em;
}

table thead {
  background: #181818;
}

table thead th {
  padding: 8px 16px;
  font-weight: 500;
  font-size: 0.85em;
  color: #666666;
  text-align: left;
}

table thead tr {
  border-color: #222222;
}

table tbody tr:nth-child(2n) {
  background: #0f0f0f;
}

/* === blockquotes === */

blockquote {
  border-block-start: 1px solid #222222;
  border-block-end: 1px solid #222222;
  background-color: #111111;
}

/* === mark / highlight === */

mark {
  background-color: #222222;
  color: #ffffff;
  border-radius: 3px;
  padding: 0.1em 0.3em;
}

/* === sidebar === */

.sidebar-iframe-inner {
  font-size: 1.3rem;
}

.chapter li a {
  color: #aaaaaa;
  transition: color 0.15s;
}

.chapter li a:hover {
  color: #ffffff;
}

.chapter li a.active {
  color: #ffffff;
}

/* === menu bar === */

#mdbook-menu-bar {
  border-block-end-color: #222222;
}

#mdbook-menu-bar.bordered {
  border-block-end-color: #222222;
}

.menu-title {
  font-weight: 400;
  font-size: 1.6rem;
  letter-spacing: -0.02em;
  color: #666666;
}

/* === search === */

#mdbook-searchbar {
  border-radius: 6px;
  font-family: 'IBM Plex Mono', monospace;
}

/* === nav arrows === */

.nav-chapters:hover {
  background-color: #111111;
}

/* === scrollbar === */

::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

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

::-webkit-scrollbar-thumb {
  background: #2a2a2a;
  border-radius: 3px;
}

/* === hide theme toggle (dark-only) === */

#theme-toggle {
  display: none;
}

/* === katex === */

/* display equation blocks — matches calculator .eq-block */
.katex-display {
  background: #0a0a0a;
  border: 1px solid #222222;
  border-radius: 6px;
  padding: 0.75em 1em !important;
  margin: 0.75em 0 !important;
  overflow-x: auto;
  text-align: center;
}

/* math inherits body text color — no forced bright override */
.katex {
  color: inherit;
}

/* === misc === */

.tooltiptext {
  font-family: 'IBM Plex Mono', monospace;
  background-color: #181818;
  border: 1px solid #222222;
  border-radius: 6px;
}

/* subtle horizontal rules */
hr {
  border: none;
  border-top: 1px solid #222222;
  margin: 2em 0;
}

/* mobile adjustments */
@media (max-width: 500px) {
  body {
    font-size: 1.4rem;
  }
}