/* Disclaimer: Don't look at this if "!important" makes you feel ill. */

@font-face {
  font-family: 'TX-02';
  src: url('/res/font/TX-02-Regular.woff2') format('woff2');
  font-weight: normal;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'TX-02';
  src: url('/res/font/TX-02-Bold.woff2') format('woff2');
  font-weight: bold;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'TX-02';
  src: url('/res/font/TX-02-Bold-Oblique.woff2') format('woff2');
  font-weight: bold;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: 'TX-02';
  src: url('/res/font/TX-02-Oblique.woff2') format('woff2');
  font-weight: normal;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: 'IBM Plex Sans';
  src: url('/res/font/IBMPlexSans-Regular.woff2') format('woff2');
  font-weight: normal;
  font-style: normal;
  font-display: optional;
}
@font-face {
  font-family: 'IBM Plex Sans';
  src: url('/res/font/IBMPlexSans-Bold.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: optional;
}
@font-face {
  font-family: 'IBM Plex Sans';
  src: url('/res/font/IBMPlexSans-Italic.woff2') format('woff2');
  font-weight: normal;
  font-style: italic;
  font-display: optional;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}


body {
  font-family: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  transition: var(--transition);
  counter-reset: footnote-counter;

  min-height: 100vh;
  display: flex;
  flex-direction: column;
}


p, ul, ol, blockquote {
  margin-bottom: 0.5rem;
}

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

main a:not(.no-decoration), footer a:not(.no-decoration) {
  color: var(--text-primary);
  text-decoration: none;
  border-bottom: 1.2px dashed var(--accent);
  position: relative;
  transition: var(--transition);
}

.no-decoration {
  text-decoration: initial;
}

main a:visited:not(.no-decoration) {
  color: var(--text-primary);
  border-bottom-color: var(--text-secondary);
}

[data-theme="light"] main a:visited {
  color: var(--text-secondary);
}

main a:hover:not(.no-decoration) {
  color: var(--accent);
  border-bottom-style: solid;
  filter: brightness(1.2);
  cursor: pointer;
}

main a:visited:hover:not(.no-decoration) {
  color: color-mix(in srgb, var(--text-secondary) 45%, var(--accent) 55%);
}

.mono {
  font-family: 'TX-02', 'Consolas', 'Courier New', monospace;
}

main a[href^="http"]:not([href*="falko.de"])::after {
  content: " ↗";
  font-size: 0.75em;
  color: var(--text-secondary);
  vertical-align: super;
}

code {
  font-family: 'TX-02', 'Consolas', 'Courier New', monospace;
  font-size: 0.9em;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border);
  padding: 0.1em 0.3em;
  border-radius: 2px;
  color: var(--text-bright);
  white-space: nowrap;
}

pre {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-dark);
  border-left: 3px solid var(--accent);
  padding: 1rem;
  overflow-x: auto;
  margin: 1rem 0;
  position: relative;
}

pre::before {
  content: "CODE LISTING";
  position: absolute;
  top: -1px;
  left: -1px;
  background-color: var(--bg-primary);
  padding: 0 0.5rem;
  font-family: 'TX-02', 'Consolas', 'Courier New', monospace;
  font-size: 0.7rem;
  color: var(--text-secondary);
  letter-spacing: 0.1em;
}

pre code {
  background: none;
  border: none;
  padding: 0;
  color: var(--text-primary);
  white-space: pre;
}

blockquote {
  border-left: 3px solid var(--accent);
  margin: 1.5rem 0;
  padding: 0.5rem 0 0.5rem 1.5rem;
  background-color: var(--bg-secondary);
  position: relative;
  font-style: italic;
}

blockquote.msg {
  font-style: normal;
  border-color: #00AA00;
  padding-left: 2rem;
}

blockquote.msg::before {
  content: "◊";
  position: absolute;
  left: 0.5rem;
  color: #00AA00;
  font-style: normal;
}

strong, .strong {
  font-weight: bold;
  color: var(--text-primary);
  text-transform: uppercase;
  font-size: 0.95em;
  letter-spacing: 0.05em;
}

ul, ol {
  margin: 1rem 0;
  padding-left: 2rem;
}

ul li::marker {
  color: var(--accent);
  content: "▸ ";
}

ul ul li::marker {
  content: "▹ ";
}

ol {
  counter-reset: section;
  list-style: none;
  padding-left: 0;
}

ol li {
  counter-increment: section;
  position: relative;
  padding-left: 3rem;
  margin-bottom: 0.5rem;
}

ol li::before {
  content: counter(section, decimal-leading-zero) ".";
  position: absolute;
  left: 0;
  font-family: 'TX-02', 'Consolas', 'Courier New', monospace;
  color: var(--accent);
  font-weight: bold;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.9rem;
}

th {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-dark);
  padding: 0.75rem;
  text-align: left;
  font-family: 'TX-02', 'Consolas', 'Courier New', monospace;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.8rem;
  color: var(--accent);
}

td {
  border: 1px solid var(--border);
  padding: 0.75rem;
  background-color: var(--bg-primary);
}

tr:nth-child(even) td {
  background-color: var(--bg-secondary);
}

hr {
  border: none;
  height: 1px;
  background: linear-gradient(
    to right,
    transparent,
    var(--border-dark) 20%,
    var(--border-dark) 80%,
    transparent
  );
  margin: 2rem 0;
  position: relative;
}

hr::after {
  content: "§";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  background-color: var(--bg-primary);
  padding: 0 0.5rem;
  color: var(--text-secondary);
}

kbd {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-dark);
  border-bottom: 2px solid var(--border-dark);
  border-radius: 3px;
  padding: 0.1em 0.4em;
  font-family: 'TX-02', 'Consolas', 'Courier New', monospace;
  font-size: 0.85em;
  display: inline-block;
  margin: 0 0.1em;
  box-shadow: 0 1px 0 rgba(0,0,0,0.1);
}

::selection {
  background-color: var(--accent);
  color: var(--bg-primary);
}

::-moz-selection {
  background-color: var(--accent);
  color: var(--bg-primary);
}

[data-theme="dark"] code {
  background-color: #1F1F1F;
  border-color: #444;
}

[data-theme="dark"] pre {
  background-color: #0F0F0F;
}

[data-theme="dark"] kbd {
  background-color: #2A2A2A;
  border-color: #444;
  box-shadow: 0 1px 0 rgba(255,255,255,0.05);
}

header {
  background-color: var(--bg-primary);
  border-bottom: 3px double var(--border-dark);
  padding: 1.5rem 0;
}

nav {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  gap: 3rem;
}

nav ul li::marker {
  content: "";
}

nav ul li:has(.active-page)::marker {
  content: "▸ ";
}

.active-page {
  font-weight: bold;
}

nav a {
  border-bottom: 0;
}

a.logo {
  font-family: 'TX-02', 'Consolas', 'Courier New', monospace;
  font-size: 2rem;
  font-weight: bold;
  color: var(--accent);
  text-decoration: none;
  position: relative;
}

.logo::before {
  content: "[";
  color: var(--text-secondary);
}

.logo::after {
  content: "]";
  color: var(--text-secondary);
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
  flex: 1;
  padding-left: 1rem;
}

.nav-links a {
  font-family: 'TX-02', 'Consolas', 'Courier New', monospace;
  font-size: 1.1rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-primary);
  text-decoration: none;
  font-variant: small-caps;
  transition: var(--transition);
  position: relative;
}

.nav-links a.active-page {
  color: var(--text-bright);
}

.nav-links a:hover {
  color: var(--accent);
}

.nav-links a::after {
  content: "";
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--accent);
  transition: width 0.3s ease;
}

.nav-links a:hover::after {
  width: 100%;
}

.colophon {
  margin-top: auto;
  padding: 1rem 2rem;
  border-top: 1px dashed var(--border);
  font-family: 'TX-02', 'Consolas', 'Courier New', monospace;
  font-size: 0.7rem;
  color: var(--text-tertiary);
  letter-spacing: 0.05em;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  align-items: baseline;
  max-width: 1200px;
  width: 100%;
  margin-left: auto;
  margin-right: auto;
}

.colophon-item {
  display: inline-flex;
  gap: 0.4rem;
}

.colophon-label {
  text-transform: uppercase;
  color: var(--text-tertiary);
}

.colophon-label::after {
  content: ":";
}

.colophon-value {
  color: var(--text-secondary) !important;
}

.colophon-sep {
  color: var(--border-dark);
  user-select: none;
}

.colophon a {
  color: var(--text-tertiary);
  text-decoration: none;
  border-bottom: 1.2px dashed transparent;
}

.colophon a:hover {
  color: var(--text-secondary);
  border-bottom: 1.2px dashed var(--text-secondary);
}
.seeker-link>a {
  font-family: "DepartureMono", "Symbols", monospace;
}

.seeker-hidden>a {
  opacity: 0.04;
}

.seeker-hidden>a:hover {
  opacity: 0.6;
  color: var(--accent) !important;
  text-shadow: 0 0 2px var(--accent);
}

.seeker-hidden>a:hover::after {
  width: 0;
}

.theme-switch {
  margin-left: auto;
  background: none;
  border: 1px solid var(--border-dark);
  color: var(--text-primary);
  padding: 0.5rem 1rem;
  font-family: 'TX-02', 'Consolas', 'Courier New', monospace;
  font-size: 0.8rem;
  cursor: pointer;
  transition: var(--transition);
}

.theme-switch:hover {
  background-color: var(--bg-secondary);
  border-color: var(--accent);
}

main {
  max-width: 1200px;
  margin: 0 auto;
  --main-vertical-padding: 3rem;
  --main-horizontal-padding: 2rem;
  padding: var(--main-vertical-padding) var(--main-horizontal-padding);
  flex: 1;
  width: 100%;
}

.section {
  margin-bottom: 4rem;
}

.section-header, .section-subheader {
  font-family: 'TX-02', 'Consolas', 'Courier New', monospace;
  font-size: 1.5rem;
  margin-bottom: 2rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.section-subheader {
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  margin-bottom: 0.75rem;
  padding-bottom: 0.25rem;
  border-bottom: 1px dashed var(--border);
}

.section-number {
  color: var(--text-secondary);
  font-size: 0.8rem;
  margin-right: 0.8rem;
}

.content-box {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border);
  padding: 2rem;
  margin-bottom: 2rem;
  position: relative;
}

.content-box::before,
.content-box::after {
  content: "";
  position: absolute;
  width: 10px;
  height: 10px;
  border: 1px solid var(--border-dark);
}

.content-box::before {
  top: -1px;
  left: -1px;
  border-right: none;
  border-bottom: none;
}

.content-box::after {
  bottom: -1px;
  right: -1px;
  border-left: none;
  border-top: none;
}

.list-highlight li > a:first-child {
  font-weight: bold;
}

.list-highlight li {
  margin-bottom: 0.5rem;
}

.item-box {
  border: 1px solid var(--border-dark);
  padding: 1rem;
  margin-bottom: 1rem;
  font-family: 'TX-02', 'Consolas', 'Courier New', monospace;
  font-size: 0.9rem;
  background-color: var(--bg-secondary);
}

.item-box-header {
  border-bottom: 1px dashed var(--border);
  padding-bottom: 0.5rem;
  margin-bottom: 0.5rem;
  color: var(--text-secondary);
}

.item-box-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr));
  gap: 0.5rem 1rem;
}

.item-label {
  color: var(--text-secondary);
}

.item-value {
  color: var(--text-primary);
}

.return-link {
  text-align: center;
  margin-top: 3rem;
}

.return-link a {
  font-family: 'TX-02', monospace;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.9rem;
}

@media (max-width: 768px) {
  header {
    padding: 1rem 0;
  }

  main {
    --main-vertical-padding: 2rem;
    --main-horizontal-padding: 1rem;
  }

  .content-box {
    padding: 1.5rem 1rem;
  }
}

@media (max-width: 672px) {
  header {
    padding: 0.5rem 0;
  }

  nav {
    flex-wrap: wrap;
    justify-content: space-between;
    padding: 0 1.5rem;
    gap: 1rem;
  }

  .nav-links {
    order: 3;
    width: 100%;
    justify-content: space-around;
    gap: 10px;
    margin-top: 0.5rem;
    position: relative;
  }

  .nav-links a {
    font-size: 1rem;
  }

  a.logo {
    order: 1;
  }
  
  .theme-switch {
    order: 2;
    margin-left: 0;
  }

  .seeker-link {
    position: absolute;
    right: 0;
    top: 50%;
    pointer-events: auto;
  }
  
  .seeker-link > a {
    display: block;
    width: 15px;
    height: 15px;
    position: absolute;
    right: 0px;
    font-size: 12px;
    bottom: -5px;
    padding: 0;
  }
}

.sidenote-wrapper {
  position: relative;
  display: inline;
  counter-increment: footnote-counter;
}

input.margin-toggle {
  display: none;
}

label.sidenote-number {
  display: inline;
  cursor: pointer;
  color: var(--accent); 
  font-family: 'TX-02', monospace;
  vertical-align: super;
  font-size: 0.7em;
  margin-left: 0.1em;
  border-bottom: none;
  user-select: none;
  transition: opacity 0.2s;
}

label.sidenote-number::after {
  content: counter(footnote-counter);
}

label.sidenote-number:hover {
  opacity: 0.6;
}

.sidenote {
  display: none;
  font-size: 0.9rem;
  line-height: 1.5;
  margin-top: 0.5rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
  
  background-color: var(--bg-secondary);
  border: 1px solid var(--border);
  border-left: 3px solid var(--text-secondary); 
  padding: 0.75rem 1rem;
  border-radius: 2px;
}

input.margin-toggle:checked + .sidenote {
  display: block;
  width: 100%;
  clear: both;
  float: left;
}

@media (min-width: 1550px) {
  
  label.sidenote-number {
    cursor: default;
    pointer-events: none;
    color: var(--text-primary);
  }

  .sidenote {
    display: block;
    float: right;
    clear: right;
    
    width: 200px;
    margin-right: -240px; 
    margin-top: -0.5rem;
    margin-bottom: 0.5rem;
    
    position: relative;
    background: transparent;
    border: none;
    padding: 0;
    
    color: var(--text-secondary);
    font-size: 0.8rem;
    text-align: left;
  }
  
  .sidenote::before {
    content: counter(footnote-counter) ". ";
    font-family: 'TX-02', monospace;
    font-weight: bold;
  }

  input.margin-toggle:checked + .sidenote,
  .sidenote {
    display: block;
  }
}