/* circumvention-corpus — visual design.
 *
 * Palette: warm cream paper / deep ink. Single accent (deep teal) so
 * the colour story doesn't fight the typography. Category-coded tag
 * chips for censor / technique / defense — desaturated, never garish.
 *
 * Typography: Fraunces (a serif with optical sizing) for display +
 * paper titles, Inter for UI / nav / body, JetBrains Mono for IDs and
 * controlled-vocabulary chips. Loaded from Google Fonts.
 *
 * The aesthetic is "field manual" — academic but contemporary. Light
 * default because researchers read on bright screens and we're
 * cosplaying paper.
 */

:root {
  --paper:   #f5f1e8;  /* page background */
  --paper-2: #ece6d6;  /* card / hover surface */
  --ink:     #1a1916;  /* primary text */
  --ink-2:   #57544c;  /* secondary text */
  --ink-3:   #8a8678;  /* tertiary / mute */
  --rule:    #d9d2bf;  /* hairline */
  --rule-2:  #c5bda5;  /* heavier rule */
  --accent:  #1f6f7a;  /* deep teal */
  --accent-2:#0e4a52;  /* hover */
  --gold:    #b08a3a;  /* sparingly: section marks */
  --censor:  #b04331;  /* desaturated red — "things censors do" */
  --tech:    #8a6a1f;  /* ochre — "detection mechanics" */
  --defense: #2f6a4b;  /* moss green — "what we do back" */
  --code-bg: #ebe5d3;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper:   #15140f;
    --paper-2: #1f1d17;
    --ink:     #ece6d2;
    --ink-2:   #b6b09c;
    --ink-3:   #807a6a;
    --rule:    #2e2b22;
    --rule-2:  #423d30;
    --accent:  #5fb4bf;
    --accent-2:#86d0db;
    --gold:    #d4ad60;
    --censor:  #e07060;
    --tech:    #d6a85a;
    --defense: #6abf95;
    --code-bg: #211e16;
  }
}

* { box-sizing: border-box; }
html { font-size: 16px; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  font-feature-settings: "ss01", "cv01";
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
.mono, code, pre, .row-id, .card-id, .tag {
  font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.display, .display-sm, h1, h2, h3 {
  font-family: "Fraunces", "Iowan Old Style", Georgia, serif;
  font-feature-settings: "ss01", "ss02";
  letter-spacing: -0.015em;
  line-height: 1.1;
}
.display { font-size: clamp(2.4rem, 5.5vw, 4.4rem); font-weight: 500; margin: 0; }
.display em { font-style: italic; color: var(--accent); font-feature-settings: "ss01"; }
.display-sm { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 500; margin: 0 0 0.6rem; }
h1 { font-size: clamp(1.75rem, 3vw, 2.4rem); font-weight: 500; margin: 0 0 0.5rem; }
h2 { font-size: 1.4rem; font-weight: 500; margin: 2.5rem 0 0.5rem; }
h3 { font-size: 1.15rem; font-weight: 500; margin: 0 0 0.3rem; }

a { color: var(--accent); text-decoration: none; transition: color 0.15s; }
a:hover { color: var(--accent-2); text-decoration: underline; }
em { font-style: italic; }
.muted { color: var(--ink-3); }
.lede { font-size: 1.15rem; line-height: 1.55; color: var(--ink-2); margin: 0.75rem 0; max-width: 42rem; }

code {
  background: var(--code-bg);
  padding: 0.05rem 0.3rem;
  border-radius: 3px;
  font-size: 0.9em;
}
pre {
  background: var(--code-bg);
  padding: 1rem 1.25rem;
  border-radius: 5px;
  overflow-x: auto;
  border: 1px solid var(--rule);
  font-size: 0.85rem;
  line-height: 1.6;
}
pre code { background: none; padding: 0; }

.wrap { max-width: 72rem; margin: 0 auto; padding: 0 1.5rem; }
main.wrap { padding: 2.5rem 1.5rem 5rem; }

/* Header */
.site-header { border-bottom: 1px solid var(--rule); background: var(--paper); position: sticky; top: 0; z-index: 10; backdrop-filter: blur(8px); background-color: color-mix(in oklab, var(--paper) 92%, transparent); }
.site-header .wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem; padding: 1rem 1.5rem; }
.brand { display: inline-flex; align-items: center; gap: 0.55rem; font-weight: 600; color: var(--ink); }
.brand:hover { color: var(--ink); text-decoration: none; }
.brand-mark { font-size: 1.3rem; color: var(--accent); }
.brand-name { font-family: "JetBrains Mono", monospace; font-size: 0.95rem; }
nav { display: flex; gap: 0.25rem 1.4rem; flex-wrap: wrap; align-items: center; }
nav a { color: var(--ink); font-size: 0.9rem; padding: 0.35rem 0; position: relative; }
nav a:hover { color: var(--accent); text-decoration: none; }
nav a:hover::after { content: ""; position: absolute; bottom: 0; left: 0; right: 0; height: 1px; background: var(--accent); }
nav a.external { color: var(--ink-2); }

/* Hero */
.hero { padding: 3.5rem 0 2.5rem; max-width: 50rem; }
.eyebrow { font-family: "JetBrains Mono", monospace; font-size: 0.78rem; letter-spacing: 0.08em; color: var(--gold); margin: 0 0 1rem; }
.cta { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.75rem; }
.btn { display: inline-flex; align-items: center; gap: 0.4rem; padding: 0.65rem 1.1rem; border-radius: 4px; font-size: 0.95rem; font-weight: 500; transition: all 0.15s; }
.btn.primary { background: var(--ink); color: var(--paper); }
.btn.primary:hover { background: var(--accent); color: var(--paper); text-decoration: none; }
.btn.ghost { border: 1px solid var(--rule-2); color: var(--ink); background: transparent; }
.btn.ghost:hover { border-color: var(--ink); color: var(--ink); text-decoration: none; }

.counts-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; margin: 3rem 0 0; padding: 1.5rem 0; border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.counts-grid div { display: flex; flex-direction: column; gap: 0.2rem; }
.counts-grid dt { font-family: "JetBrains Mono", monospace; font-size: 0.75rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-3); margin: 0; }
.counts-grid dd { font-family: "Fraunces", serif; font-size: 2rem; font-weight: 500; margin: 0; color: var(--ink); }

/* Section marks */
.section-mark { font-family: "JetBrains Mono", monospace; font-size: 0.78rem; letter-spacing: 0.08em; color: var(--gold); margin: 4rem 0 1rem; padding-top: 2rem; border-top: 1px solid var(--rule); }

/* Two-column "why" section */
.two-col { display: grid; grid-template-columns: 1fr; gap: 2rem; }
@media (min-width: 60rem) { .two-col { grid-template-columns: 2fr 1fr; gap: 3rem; } }
.aside { padding: 1.5rem; background: var(--paper-2); border-left: 3px solid var(--gold); border-radius: 0 4px 4px 0; }
.aside-label { font-family: "JetBrains Mono", monospace; font-size: 0.75rem; letter-spacing: 0.08em; color: var(--gold); text-transform: uppercase; margin: 0 0 0.6rem; }
.aside p:last-child { margin-bottom: 0; }

/* Paper cards */
.paper-cards { list-style: none; padding: 0; margin: 1.5rem 0 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(20rem, 1fr)); gap: 1rem; }
.paper-card { background: var(--paper-2); border-radius: 5px; border: 1px solid var(--rule); transition: all 0.15s; overflow: hidden; }
.paper-card:hover { border-color: var(--accent); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(0,0,0,0.04); }
.card-link { display: block; padding: 1rem 1.1rem; color: var(--ink); }
.card-link:hover { text-decoration: none; color: var(--ink); }
.card-id { font-size: 0.7rem; color: var(--ink-3); margin-bottom: 0.4rem; letter-spacing: -0.02em; }
.paper-card h3 { font-family: "Fraunces", serif; font-size: 1.05rem; font-weight: 500; margin: 0 0 0.4rem; color: var(--ink); line-height: 1.25; }
.card-meta { font-size: 0.85rem; color: var(--ink-2); margin-bottom: 0.6rem; }
.card-meta em { color: var(--ink-2); }
.card-tags { display: flex; flex-wrap: wrap; gap: 0.3rem; }

/* Paper list (compact rows) */
.paper-list { list-style: none; padding: 0; margin: 1.5rem 0 0; }
.paper-list li { border-bottom: 1px solid var(--rule); }
.paper-list li:first-child { border-top: 1px solid var(--rule); }
.paper-list li a { display: grid; grid-template-columns: minmax(15rem, 18rem) 1fr auto; gap: 1.5rem; padding: 1rem 0.5rem; color: var(--ink); align-items: baseline; transition: background 0.15s; }
.paper-list li a:hover { background: var(--paper-2); text-decoration: none; }
.row-id { font-size: 0.78rem; color: var(--ink-3); }
.row-title { font-family: "Fraunces", serif; font-size: 1.05rem; line-height: 1.3; color: var(--ink); }
.row-meta { font-size: 0.85rem; color: var(--ink-2); white-space: nowrap; }
@media (max-width: 50rem) {
  .paper-list li a { grid-template-columns: 1fr; gap: 0.25rem; }
  .row-meta { white-space: normal; }
}

/* Bottom CTA */
.cta-bottom { text-align: center; padding: 4rem 0 2rem; margin-top: 4rem; border-top: 1px solid var(--rule); }
.cta-bottom .lede { margin: 0.75rem auto 1.75rem; }

/* Tag chips — controlled vocabulary, the visual heart of the site */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.1rem 0.5rem;
  margin: 0.15rem 0.2rem 0.15rem 0;
  background: var(--paper-2);
  border: 1px solid var(--rule);
  border-radius: 3px;
  font-size: 0.78rem;
  text-decoration: none;
  color: var(--ink);
  transition: all 0.12s;
  letter-spacing: -0.01em;
  white-space: nowrap;
}
.tag:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); text-decoration: none; }
.tag.censor    { border-left: 3px solid var(--censor); padding-left: 0.45rem; }
.tag.technique { border-left: 3px solid var(--tech); padding-left: 0.45rem; }
.tag.defense   { border-left: 3px solid var(--defense); padding-left: 0.45rem; }

/* Paper detail page */
article.paper { max-width: 48rem; margin: 0 auto; }
article.paper .paper-id { font-size: 0.78rem; color: var(--ink-3); margin: 0 0 0.5rem; letter-spacing: -0.02em; }
article.paper h1 { font-size: clamp(1.6rem, 3vw, 2.4rem); font-weight: 500; margin: 0 0 0.5rem; }
article.paper .paper-links { font-size: 0.92rem; color: var(--ink-2); margin: 0 0 2rem; padding-bottom: 1.5rem; border-bottom: 1px solid var(--rule); }
.related-section { max-width: 48rem; margin: 3rem auto 0; }
.tag-name { color: var(--accent); font-size: 0.85em; }
.byline { font-size: 1rem; color: var(--ink-2); margin: 0 0 1.5rem; }
.byline em { font-style: italic; }
.badge { display: inline-block; font-family: "JetBrains Mono", monospace; font-size: 0.7rem; letter-spacing: 0.06em; text-transform: uppercase; padding: 0.1rem 0.5rem; border-radius: 3px; background: var(--gold); color: var(--paper); vertical-align: middle; margin-left: 0.5rem; }
.badge.core { background: var(--accent); color: var(--paper); }
.abstract, .notes { white-space: pre-wrap; }
.notes { padding: 1.25rem 1.4rem; background: var(--paper-2); border-left: 3px solid var(--accent); border-radius: 0 4px 4px 0; }
.tags-dl { display: grid; grid-template-columns: max-content 1fr; gap: 0.4rem 1.5rem; margin: 1rem 0; }
.tags-dl dt { font-family: "JetBrains Mono", monospace; font-size: 0.78rem; letter-spacing: 0.04em; color: var(--ink-3); padding-top: 0.3rem; }
.tags-dl dd { margin: 0; padding: 0; }

/* Tag index page */
.tag-index { list-style: none; padding: 0; display: grid; grid-template-columns: max-content max-content 1fr max-content; gap: 0.5rem 1.5rem; }
.tag-index li { display: contents; }
.tag-index li > a { font-family: "JetBrains Mono", monospace; font-size: 0.9rem; }
.tag-index li > span:nth-child(2) { color: var(--ink); }
.tag-index li > span.muted { color: var(--ink-3); font-size: 0.85rem; }

/* Taxonomy page */
.tax { display: grid; grid-template-columns: max-content 1fr; gap: 0.4rem 1.5rem; margin: 1rem 0; }
.tax dt { font-family: "JetBrains Mono", monospace; font-size: 0.85rem; padding-top: 0.2rem; }
.tax dd { margin: 0; padding: 0 0 0.4rem; color: var(--ink-2); font-size: 0.95rem; }
.tax dd .muted { display: block; font-size: 0.82rem; margin-top: 0.15rem; }
@media (max-width: 50rem) {
  .tax, .tags-dl, .tag-index { grid-template-columns: 1fr; gap: 0.2rem; }
  .tax dt, .tags-dl dt { padding-top: 0.5rem; }
}

/* Footer */
.site-footer { border-top: 1px solid var(--rule); margin-top: 4rem; padding: 3rem 0 2rem; background: var(--paper-2); color: var(--ink-2); font-size: 0.9rem; }
.foot-grid { display: grid; grid-template-columns: 2fr repeat(3, 1fr); gap: 2rem; margin-bottom: 2rem; }
@media (max-width: 50rem) { .foot-grid { grid-template-columns: 1fr 1fr; } }
.foot-title { font-family: "JetBrains Mono", monospace; font-size: 0.78rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink); margin-bottom: 0.5rem; }
.foot-grid ul { list-style: none; padding: 0; margin: 0; }
.foot-grid li { margin-bottom: 0.3rem; }
.foot-grid a { color: var(--ink-2); }
.foot-grid a:hover { color: var(--accent); }
.legal { padding-top: 1.5rem; border-top: 1px solid var(--rule); color: var(--ink-3); font-size: 0.82rem; max-width: 60rem; }
.legal a { color: var(--ink-2); }

/* Use page sections */
dl.tax dt code { font-family: inherit; background: none; }

/* Search */
.search-wrap { position: relative; flex: 1 1 28rem; max-width: 32rem; min-width: 14rem; margin: 0 1rem; }
#search {
  width: 100%;
  padding: 0.55rem 0.85rem;
  padding-right: 2rem;
  border: 1px solid var(--rule-2);
  border-radius: 4px;
  background: var(--paper);
  color: var(--ink);
  font-family: inherit;
  font-size: 0.92rem;
  transition: border-color 0.15s;
}
#search:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in oklab, var(--accent) 18%, transparent); }
.search-kbd {
  position: absolute; right: 0.6rem; top: 50%; transform: translateY(-50%);
  font-family: "JetBrains Mono", monospace; font-size: 0.75rem;
  padding: 0.05rem 0.4rem;
  border: 1px solid var(--rule-2);
  border-radius: 3px;
  color: var(--ink-3); background: var(--paper-2);
  pointer-events: none;
}
#search:focus + .search-kbd { display: none; }
#search-results {
  position: absolute; top: calc(100% + 0.5rem); left: 0; right: 0;
  background: var(--paper); border: 1px solid var(--rule-2); border-radius: 5px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
  max-height: 70vh; overflow-y: auto;
  z-index: 20;
}
#search-results .empty { padding: 1rem 1.1rem; color: var(--ink-3); font-size: 0.92rem; }
#search-results .summary { padding: 0.5rem 1.1rem; color: var(--ink-3); font-size: 0.78rem; letter-spacing: 0.04em; text-transform: uppercase; border-bottom: 1px solid var(--rule); font-family: "JetBrains Mono", monospace; }
#search-results a {
  display: grid; grid-template-columns: 1fr auto;
  gap: 0.4rem 1rem; padding: 0.65rem 1.1rem;
  color: var(--ink); border-bottom: 1px solid var(--rule);
}
#search-results a:last-child { border-bottom: none; }
#search-results a:hover, #search-results a.active { background: var(--paper-2); text-decoration: none; }
#search-results .r-title { font-family: "Fraunces", serif; font-size: 1rem; font-weight: 500; line-height: 1.25; }
#search-results .r-meta { font-size: 0.8rem; color: var(--ink-3); white-space: nowrap; }
#search-results .r-id { grid-column: 1 / 3; font-family: "JetBrains Mono", monospace; font-size: 0.72rem; color: var(--ink-3); }
#search-results .r-tags { grid-column: 1 / 3; display: flex; gap: 0.3rem; flex-wrap: wrap; }
#search-results .r-tags .tag { font-size: 0.7rem; padding: 0 0.4rem; }
#search-results mark { background: color-mix(in oklab, var(--gold) 30%, transparent); color: var(--ink); padding: 0; border-radius: 2px; }
@media (max-width: 60rem) {
  .site-header .wrap { flex-direction: column; align-items: stretch; }
  .search-wrap { margin: 0; max-width: none; }
}