/* Lax site stylesheet, adapted from the reference design
   (main.autoformalize.pages.dev): Latin Modern serif, sticky header,
   collapsible sidebar, block-based entry pages. Fully self-hosted. */

/* Latin Modern — the default LaTeX font (fonts/, GUST license) */
@font-face{ font-family: 'Latin Modern'; font-weight: normal; font-style: normal;
  src: url('fonts/LM-regular.woff2') format('woff2'); }
@font-face{ font-family: 'Latin Modern'; font-weight: normal; font-style: italic;
  src: url('fonts/LM-italic.woff2') format('woff2'); }
@font-face{ font-family: 'Latin Modern'; font-weight: bold; font-style: normal;
  src: url('fonts/LM-bold.woff2') format('woff2'); }
@font-face{ font-family: 'Latin Modern'; font-weight: bold; font-style: italic;
  src: url('fonts/LM-bold-italic.woff2') format('woff2'); }

:root{
  --bg: #f8f6f3;
  --surface: #ffffff;
  --border: #d6d0c8;
  --border-light: #e8e3dc;
  --text: #2b2b2b;
  --text-dim: #6b7280;
  --accent: #3b6b9a;
  --accent-light: #e9f0f7;
  --link: #2c5f8a;
  --proven-bg: #e8f5e8;
  --proven-fg: #2d6a2d;
  --proven-border: #b8dab8;
  --partial-bg: #fcf3d9;
  --partial-fg: #8a6a1c;
  --partial-border: #e8d388;
  --none-bg: #f0f0f0;
  --none-fg: #666666;
  --none-border: #d0d0d0;
  --mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
}

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

html{ font-size: 17px; }

body{
  font-family: 'Latin Modern', Georgia, serif;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

/* ── Header ── */

.site-header{
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
}

.site-title{
  grid-column: 2;
  font-size: 1.45rem;
  line-height: 1.2;
  font-variant: small-caps;
  letter-spacing: 0.02em;
  padding: 0.55rem 0;
}

.site-title a{ color: inherit; text-decoration: none; }
.site-title a:hover{ color: var(--accent); }

.sidebar-toggle{
  grid-column: 1;
  justify-self: start;
  margin-left: 0.6rem;
  border: none;
  background: none;
  cursor: pointer;
  padding: 0.55rem;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 120ms ease;
}

.sidebar-toggle-icon{
  position: relative;
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--text-dim);
  border-radius: 1px;
}

.sidebar-toggle-icon::before,
.sidebar-toggle-icon::after{
  content: '';
  position: absolute;
  left: 0;
  width: 100%;
  height: 1.5px;
  background: var(--text-dim);
  border-radius: 1px;
}

.sidebar-toggle-icon::before{ top: -5px; }
.sidebar-toggle-icon::after{ top: 5px; }
.sidebar-toggle:hover{ background: var(--accent-light); }
.sidebar-toggle:focus-visible{ outline: 2px solid rgba(59, 107, 154, 0.35); outline-offset: 2px; }

/* ── Shell: sidebar + content pane ── */

#content-shell{
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 52em) minmax(0, 1fr);
}

#sidebar{
  grid-column: 2;
  grid-row: 1;
  width: 285px;
  position: sticky;
  top: 3.2rem;
  max-height: calc(100vh - 3.2rem);
  overflow-y: auto;
  padding: 1.75rem 1rem 2.25rem 1.25rem;
  border-right: 1px solid var(--border-light);
}

#content-shell.sidebar-hidden #sidebar{ display: none; }

#main{
  grid-column: 3;
  grid-row: 1;
  min-width: 0;
}

#detail{
  padding: 2rem 2rem 4rem;
  min-width: 0;
  line-height: 1.75;
}

/* ── Sidebar contents ── */

.sidebar-back{
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 0.4rem;
  width: 100%;
  margin-bottom: 1rem;
  padding: 0.4rem 0.65rem;
  background: var(--surface);
  border: 1px solid var(--border-light);
  border-radius: 4px;
  color: var(--link);
  font-size: 0.88rem;
  text-decoration: none;
  line-height: 1.3;
  transition: border-color 120ms ease;
}

.sidebar-back:hover{ border-color: var(--accent); text-decoration: underline; }
.sidebar-back-arrow{ font-size: 0.95rem; line-height: 1; }

.sidebar-filters{
  display: grid;
  gap: 0.55rem;
  margin-bottom: 0.9rem;
  padding-bottom: 0.9rem;
  border-bottom: 1px solid var(--border);
}

.filter-group{ display: grid; gap: 0.18rem; }

.filter-group label{
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.filter-input,
.filter-select{
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: var(--bg);
  color: var(--text);
  font: inherit;
  font-size: 0.78rem;
  padding: 0.35rem 0.45rem;
  transition: border-color 120ms ease;
}

.filter-input:focus,
.filter-select:focus{
  outline: none;
  border-color: var(--accent);
  background: var(--surface);
  box-shadow: 0 0 0 2px rgba(59, 107, 154, 0.12);
}

#entry-list{ list-style: none; }

#entry-list li{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.4rem;
  padding: 0.42rem 0.5rem;
  margin-bottom: 1px;
  font-size: 0.88rem;
  border-left: 2px solid transparent;
  transition: background 100ms ease;
}

#entry-list li[hidden]{ display: none; }
#entry-list li:hover{ background: var(--accent-light); }
#entry-list li.active{ background: var(--accent-light); border-left-color: var(--accent); }
#entry-list #entry-list-empty{ color: var(--text-dim); cursor: default; }

.entry-link{ min-width: 0; color: var(--text); text-decoration: none; }

.entry-label{
  display: inline-flex;
  align-items: baseline;
  gap: 0.35rem;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.entry-label-text{ overflow: hidden; text-overflow: ellipsis; }

.entry-id{
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--text-dim);
}

.type-badge{
  display: inline-block;
  font-size: 0.6rem;
  padding: 1px 4px;
  border-radius: 2px;
  margin-right: 2px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: var(--text-dim);
  color: #fff;
  opacity: 0.85;
  flex-shrink: 0;
}

.type-badge-none{ background: var(--none-bg); color: var(--none-fg); }

.draft-badge{
  padding: 0 5px;
  font-size: 0.58rem;
  font-style: italic;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--partial-fg);
  background: var(--partial-bg);
  border: 1px solid var(--partial-border);
  border-radius: 2px;
  flex-shrink: 0;
}

/* ── Headings, pills ── */

#detail h2{
  font-variant: small-caps;
  letter-spacing: 0.03em;
  font-size: 1.2rem;
  overflow-wrap: break-word;
}

.detail-heading{
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
  padding-bottom: 0.7rem;
  border-bottom: 1px solid var(--border-light);
}

.status-pills{ display: flex; gap: 0.5rem; flex-wrap: wrap; justify-content: flex-end; }

.status-pill{
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.15rem 0.4rem;
  border-radius: 3px;
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  border: 1px solid transparent;
  white-space: nowrap;
}

.pill-proven, .state-registered{
  background: var(--proven-bg); color: var(--proven-fg); border-color: var(--proven-border);
}

.pill-partial, .state-draft{
  background: var(--partial-bg); color: var(--partial-fg); border-color: var(--partial-border);
}

.pill-none, .state-init{
  background: var(--none-bg); color: var(--none-fg); border-color: var(--none-border);
}

.concept-microline{
  font-size: 0.78rem;
  color: var(--text-dim);
  margin-top: 0.25rem;
}

.concept-microline code{ font-family: var(--mono); font-size: 0.74rem; }
.concept-microline a{ color: var(--link); text-decoration: none; }
.concept-microline a:hover{ text-decoration: underline; }

/* ── Submission masthead (paper title + byline + abstract) ── */

.paper-head{
  text-align: center;
  margin-bottom: 1.6rem;
  padding-bottom: 1.1rem;
  border-bottom: 1px solid var(--border-light);
}

.paper-title{
  font-size: 1.9rem;
  font-weight: 700;
  line-height: 1.22;
  letter-spacing: 0;
  margin-bottom: 0.65rem;
  overflow-wrap: break-word;
}

.paper-authors{
  font-size: 1.08rem;
  line-height: 1.5;
  margin-bottom: 0.7rem;
}

.paper-author{ white-space: nowrap; }
.paper-author a{ color: inherit; text-decoration: none; }
.paper-author a:hover{ color: var(--accent); }
.author-links{ font-size: 0.72em; color: var(--text-dim); white-space: nowrap; }
.author-links a{ color: var(--link); }
.author-sep{ margin: 0 0.55rem; color: var(--text-dim); }

.paper-meta{
  font-size: 0.8rem;
  color: var(--text-dim);
  line-height: 2;
}

.paper-meta a{ color: var(--link); text-decoration: none; }
.paper-meta a:hover{ text-decoration: underline; }
.paper-meta code{ font-family: var(--mono); font-size: 0.9em; }
.paper-meta .status-pill{ vertical-align: middle; }
.meta-sep{ margin: 0 0.45rem; color: var(--text-dim); }

.paper-abstract{
  max-width: 42em;
  margin: 0 auto 2.4rem;
}

.abstract-heading{
  text-align: center;
  font-size: 0.8rem;
  font-variant: small-caps;
  font-weight: 700;
  letter-spacing: 0.09em;
  color: var(--text-dim);
  margin-bottom: 0.45rem;
}

.paper-abstract .latex-content{ font-size: 0.95rem; }

.draft-banner{
  background: var(--partial-bg);
  border: 1px solid var(--partial-border);
  border-radius: 4px;
  color: var(--partial-fg);
  font-size: 0.88rem;
  padding: 0.55rem 0.9rem;
  margin: 0.9rem 0;
}

/* ── Blocks ── */

.block{
  background: var(--surface);
  border-left: 3px solid var(--border-light);
  border-radius: 0 3px 3px 0;
  padding: 1rem 1.3rem;
  margin-bottom: 1.4rem;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.03);
}

.block h3{
  font-size: 0.85rem;
  font-weight: 700;
  font-variant: small-caps;
  color: var(--text-dim);
  margin-bottom: 0.7rem;
  letter-spacing: 0.05em;
}

.block-statement .latex-content{ font-style: italic; }

.page-section{ margin-top: 2.2rem; }

.section-title{
  font-size: 1.05rem;
  font-variant: small-caps;
  letter-spacing: 0.04em;
  color: var(--text-dim);
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 0.3rem;
  margin-bottom: 0.85rem;
}

/* ── Markdown / math content ── */

.latex-content{
  line-height: 1.55;
  text-align: justify;
  hyphens: auto;
  overflow-wrap: anywhere;
}

.latex-content p + p{ margin-top: 0.9rem; }

.latex-content ul,
.latex-content ol{ margin: 0.8rem 0 0.3rem 1.3rem; padding-left: 0.3rem; }

.latex-content li + li{ margin-top: 0.3rem; }

.latex-content a{ color: var(--link); }

.latex-content code{
  font-family: var(--mono);
  font-size: 0.92em;
  background: #f3f5f8;
  border: 1px solid var(--border-light);
  border-radius: 4px;
  padding: 0.08rem 0.35rem;
  color: #23415f;
}

.latex-content pre{
  margin: 0.9rem 0;
  padding: 0.8rem 0.95rem;
  background: #f6f8fb;
  border: 1px solid var(--border-light);
  border-radius: 6px;
  overflow-x: auto;
  line-height: 1.55;
}

.latex-content pre code{
  display: block;
  padding: 0;
  border: none;
  background: transparent;
  color: var(--text);
  font-size: 0.84rem;
  white-space: pre;
}

.latex-content h1,
.latex-content h2,
.latex-content h3{
  font-size: 1.02rem;
  margin: 1.1rem 0 0.5rem;
  font-variant: normal;
  letter-spacing: 0;
  border: none;
  padding: 0;
}

/* the math constant: KaTeX default 1.21em is oversized next to Latin Modern */
.katex{ font-size: 1em; }

.katex-display{ max-width: 100%; overflow-x: auto; overflow-y: hidden; margin: 0.95rem 0; }

.xref code{ color: var(--link); }
.xref-broken code{ color: var(--partial-fg); border-color: var(--partial-border); }

.math-error{ color: var(--partial-fg); font-family: var(--mono); font-size: 0.85em; }

/* ── Lean source table ── */

.inline-contract-shell{
  border: 1px solid var(--border-light);
  border-radius: 6px;
  background: #f6f8fb;
  overflow: hidden;
}

.inline-contract-wrap{ overflow-x: auto; }

.inline-contract-table{
  border-collapse: collapse;
  width: 100%;
  font-family: var(--mono);
  font-size: 0.79rem;
  line-height: 1.62;
}

.inline-contract-table td{ padding: 0; vertical-align: top; white-space: pre; }

.inline-contract-table .line-num{
  width: 3.7rem;
  text-align: right;
  padding: 0 0.95rem 0 0.75rem;
  color: var(--text-dim);
  user-select: none;
  opacity: 0.48;
}

.inline-contract-table .line-num a{ color: inherit; text-decoration: none; }

.inline-contract-table .line-code{ padding-right: 1rem; }

.inline-contract-table tr.line-proven td{ background: var(--proven-bg); }
.inline-contract-table tr.line-unproven td{ background: var(--partial-bg); }

.inline-contract-table tr:target td{ background: var(--accent-light); }

.section-heading .source-link{
  font-variant: normal;
  font-weight: 400;
  letter-spacing: 0;
  font-size: 0.78rem;
  margin-left: 0.5rem;
  color: var(--link);
  text-decoration: none;
}

.section-heading .source-link:hover{ text-decoration: underline; }

/* ── Statements ── */

.statement{
  border-top: 1px solid var(--border-light);
  padding-top: 0.8rem;
  margin-top: 0.8rem;
}

.statement:first-of-type{ border-top: none; padding-top: 0; margin-top: 0; }

.statement-head{
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.6rem;
  margin-bottom: 0.4rem;
}

.statement-head code{ font-family: var(--mono); font-size: 0.82rem; overflow-wrap: anywhere; }

.statement-signature pre{
  background: #f6f8fb;
  border: 1px solid var(--border-light);
  border-radius: 6px;
  padding: 0.5rem 0.75rem;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 0.79rem;
  line-height: 1.5;
  margin-bottom: 0.5rem;
}

.statement-meta{
  font-size: 0.78rem;
  color: var(--text-dim);
  margin-top: 0.35rem;
}

.statement-meta a{ color: var(--link); text-decoration: none; }
.statement-meta a:hover{ text-decoration: underline; }
.statement-meta code{ font-family: var(--mono); font-size: 0.74rem; }

.statement:target{
  background: var(--accent-light);
  outline: 0.5rem solid var(--accent-light);
}

/* ── Dependency columns ── */

.deps-columns{ display: flex; gap: 1.5rem; }

.deps-col{ flex: 1; min-width: 0; }

.deps-col-heading{
  font-size: 0.65rem;
  color: var(--text-dim);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.3rem;
}

.deps-list{ list-style: none; padding: 0; }

.deps-list li{ margin-bottom: 0.3rem; }

.deps-list a{ color: var(--link); text-decoration: none; overflow-wrap: anywhere; }
.deps-list a:hover{ text-decoration: underline; }
.deps-list code{ font-family: var(--mono); font-size: 0.74rem; }

/* ── Landing page ── */

.landing-about{ margin-bottom: 1.5rem; line-height: 1.6; }

.landing-about h2{
  font-size: 1.35rem;
  font-variant: normal;
  margin-bottom: 0.8rem;
}

.landing-about p{ margin-bottom: 0.8rem; }

.stats-line{
  font-variant: small-caps;
  letter-spacing: 0.04em;
  color: var(--text-dim);
  font-size: 0.92rem;
}

.submissions-library h3{
  font-variant: small-caps;
  letter-spacing: 0.04em;
  font-size: 0.95rem;
  color: var(--text-dim);
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 0.3rem;
  margin-bottom: 0.75rem;
}

.submissions-list{
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.submissions-list-link{
  display: block;
  padding: 0.85rem 1rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  text-decoration: none;
  color: var(--text);
  transition: border-color 120ms ease, background 120ms ease;
}

.submissions-list-link:hover{ border-color: var(--accent); background: var(--accent-light); }

.submissions-list-link.outputless{ opacity: 0.6; }

.submissions-list-title{
  display: block;
  font-weight: 600;
  font-size: 1.02rem;
  color: var(--link);
}

.submissions-list-year{ margin-left: 0.3rem; color: var(--text-dim); font-weight: 400; }

.submissions-list-meta{
  display: block;
  font-size: 0.9rem;
  margin-top: 0.25rem;
}

.submissions-list-counts{
  display: block;
  font-size: 0.78rem;
  color: var(--text-dim);
  font-variant: small-caps;
  letter-spacing: 0.04em;
  margin-top: 0.3rem;
}

.submissions-list-counts code{ font-family: var(--mono); font-size: 0.72rem; font-variant: normal; }

/* ── Proof cards ── */

.proof-card{
  background: var(--surface);
  border-left: 3px solid var(--border-light);
  border-radius: 0 6px 6px 0;
  padding: 0.9rem 1rem;
  margin-bottom: 0.85rem;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.03);
}

.proof-card:target{ border-left-color: var(--accent); }

.proof-card-head{
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.6rem;
  margin-bottom: 0.45rem;
}

.proof-card-head code{ font-family: var(--mono); font-size: 0.82rem; overflow-wrap: anywhere; }

.proof-card h4{
  font-size: 0.8rem;
  font-variant: small-caps;
  color: var(--text-dim);
  letter-spacing: 0.05em;
  margin: 0.7rem 0 0.3rem;
}

.proof-rel{
  font-size: 0.85rem;
  margin-bottom: 0.45rem;
  line-height: 1.9;
}

.proof-rel a{ color: var(--link); text-decoration: none; }
.proof-rel a:hover{ text-decoration: underline; }
.proof-rel code{ font-family: var(--mono); font-size: 0.76rem; }

.concept-list{ list-style: none; padding: 0; margin-top: 0.5rem; }

.concept-list li{
  display: flex;
  align-items: baseline;
  gap: 0.45rem;
  padding: 0.28rem 0;
  flex-wrap: wrap;
}

.concept-list a{ color: var(--link); text-decoration: none; font-weight: 600; }
.concept-list a:hover{ text-decoration: underline; }
.concept-list .entry-id{ font-size: 0.74rem; }

.honesty-note,
.empty-note{
  color: var(--text-dim);
  font-size: 0.85rem;
  margin-top: 0.6rem;
}

.citation,
.bib-entry{
  background: #f6f8fb;
  border: 1px solid var(--border-light);
  border-radius: 6px;
  padding: 0.8rem 0.95rem;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 0.78rem;
  line-height: 1.55;
  margin-bottom: 0.85rem;
  user-select: all;
}

/* ── Graph figures ── */

.figure-container{
  height: 320px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  overflow: hidden;
  margin-bottom: 1rem;
}

.figure-container:empty{ display: none; }

.figure-container svg{ width: 100%; height: 100%; }

.dag-node rect,
.net-node rect{
  stroke-width: 1.2;
  cursor: pointer;
}

.dag-node text,
.net-node text,
.net-proof text{
  font-size: 10px;
  fill: var(--text);
  font-family: var(--mono);
}

.dag-node rect{ fill: var(--accent-light); stroke: var(--accent); }
.dag-node.ext rect{ fill: var(--none-bg); stroke: var(--none-border); }
.dag-node.ext text{ fill: var(--text-dim); }

.net-node.proven rect{ fill: var(--proven-bg); stroke: var(--proven-border); }
.net-node.unproven rect{ fill: var(--partial-bg); stroke: var(--partial-border); }
.net-node.ext rect{ fill: var(--none-bg); stroke: var(--none-border); }
.net-node.ext text{ fill: var(--text-dim); }

.net-proof path{
  stroke: var(--text-dim);
  stroke-width: 2;
  fill: none;
  cursor: pointer;
}

.net-proof.ext path{ stroke: var(--none-border); }

.dag-edge,
.net-edge{
  fill: none;
  stroke: var(--text-dim);
  stroke-opacity: 0.55;
  stroke-width: 1.2;
}

/* ── Mobile drawer ── */

.sidebar-backdrop{ display: none; }

@media (max-width: 900px){
  #content-shell{ grid-template-columns: 1fr; position: relative; }

  #sidebar{
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: min(320px, 85vw);
    max-height: none;
    z-index: 200;
    background: var(--surface);
    border-right: 1px solid var(--border);
    box-shadow: 2px 0 12px rgba(0, 0, 0, 0.12);
    transform: translateX(-100%);
    pointer-events: none;
  }

  #sidebar.ready{ transition: transform 200ms ease; }
  #sidebar.open{ transform: translateX(0); pointer-events: auto; }

  .sidebar-backdrop{
    display: block;
    position: fixed;
    inset: 0;
    z-index: 199;
    background: rgba(0, 0, 0, 0.25);
    opacity: 0;
    pointer-events: none;
  }

  .sidebar-backdrop.ready{ transition: opacity 200ms ease; }
  .sidebar-backdrop.open{ opacity: 1; pointer-events: auto; }

  #main{ grid-column: 1; width: 100%; }

  #detail{ padding: 1.2rem 1rem 3rem; }

  #detail h2{ font-size: 1.05rem; }

  .paper-title{ font-size: 1.4rem; }

  .detail-heading{ flex-direction: column; align-items: stretch; }
  .detail-heading .status-pills{ justify-content: flex-start; }

  .deps-columns{ flex-direction: column; }

  .inline-contract-table{ font-size: 0.72rem; line-height: 1.55; }
  .inline-contract-table .line-num{ width: 3rem; padding-right: 0.7rem; }
}