/* AIxCC SoK Companion — clean academic stylesheet */

:root {
  --bg: #ffffff;
  --bg-soft: #f6f7f9;
  --bg-code: #f1f3f5;
  --border: #e2e4e9;
  --border-strong: #c8ccd2;
  --text: #1a1f29;
  --text-soft: #4a5160;
  --text-muted: #717789;
  --link: #1f4cdb;
  --link-hover: #0a2da8;
  --accent: #0a2da8;
  --row-alt: #f7f8fb;
  --table-head: #eef0f4;
  --tag-bg: #eef2ff;
  --tag-fg: #2a3eb1;
  --good: #1b7a3a;
  --bad: #b3262a;
  --sidebar-width: 280px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Charter", "Iowan Old Style", "Source Serif Pro", Georgia, "Times New Roman", serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* long unbreakable tokens (URLs, hashes, file paths) — break inside content
   rather than push the column wider than the viewport */
section,
section p,
section li,
.team-entry,
.figure-caption,
.callout,
.footnotes {
  overflow-wrap: anywhere;
  word-break: break-word;
}

code, pre, .mono, .cpv-name {
  font-family: "JetBrains Mono", "SF Mono", "Menlo", "Consolas", monospace;
  font-size: 0.92em;
}

/* layout — desktop uses a fixed sidebar (independent of body scroll,
   so it cannot disappear when content scrolls) plus a content area
   that leaves a gutter on the left equal to the sidebar width. */
.layout { min-height: 100vh; }

main.content { min-width: 0; }

aside.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  overflow-y: auto;
  overflow-x: hidden;
  background: var(--bg-soft);
  border-right: 1px solid var(--border);
  padding: 1.4rem 1.2rem 2rem;
  font-size: 0.92rem;
  /* Above the backdrop so the TOC isn't dimmed and is clickable. */
  z-index: 30;
}

main.content { margin-left: var(--sidebar-width); }

aside.sidebar nav a { overflow-wrap: anywhere; }

/* --- mobile / narrow: hide the sidebar, expose a floating TOC button
   that opens a slide-in drawer ----------------------------------- */
.toc-toggle {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  /* Above the sidebar so the close affordance is never hidden. */
  z-index: 40;
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  border: none;
  background: var(--accent);
  color: white;
  font-size: 1.4rem;
  font-weight: 700;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(10, 45, 168, 0.35);
  display: none;             /* hidden by default; shown via media query */
  align-items: center;
  justify-content: center;
}
.toc-toggle:hover { background: var(--link-hover); }

.toc-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.35);
  /* Below the sidebar (which is z-index: 30) so the TOC sits ON TOP of
     the dim overlay — only the page content gets dimmed, not the menu. */
  z-index: 20;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s;
}
body.toc-open .toc-backdrop {
  opacity: 1;
  pointer-events: auto;
}

aside.sidebar h1 {
  font-size: 0.95rem;
  font-weight: 700;
  margin: 0 0 0.4rem;
  line-height: 1.35;
  letter-spacing: 0;
}

aside.sidebar h1 a { color: var(--text); text-decoration: none; }
aside.sidebar h1 a:hover { color: var(--link); }

.sidebar .subtitle {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin: 0 0 1.2rem;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.sidebar nav ol,
.sidebar nav ul {
  list-style: none;
  padding-left: 0;
  margin: 0;
}

.sidebar nav > ol > li {
  margin: 0.15rem 0;
}

.sidebar nav a {
  display: block;
  color: var(--text-soft);
  text-decoration: none;
  padding: 0.22rem 0.5rem;
  border-radius: 4px;
  line-height: 1.35;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.sidebar nav a:hover { background: #e5e8ee; color: var(--text); }

.sidebar nav a.active {
  background: #dfe4ef;
  color: var(--accent);
  font-weight: 600;
}

.sidebar .nav-section-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin: 1.1rem 0 0.3rem 0.5rem;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-weight: 600;
}

main.content {
  padding: 2.5rem clamp(1rem, 4vw, 3rem) 6rem;
  /* Outer cap prevents very wide monitors (2K/4K) from spreading a
     14-column table into a sparse grid. NOTE: never set width:100%
     here — combined with margin-left:280px (the fixed-sidebar gutter)
     it would push the box wider than the viewport. Default `width:auto`
     for block elements already fills "parent − margins". */
  max-width: 1400px;
}

/* --- unified content column ---------------------------------------
   Every block — prose, titles, tables, formulas — caps at the same
   width and centers itself, giving one tidy column with consistent
   left/right edges at every viewport size.

   Figures are an exception: they cap at a smaller width (≈ their
   natural display resolution) so that on wide monitors they don't
   stretch into a pixelated / sparse rendering. They still shrink
   with the viewport when the screen is narrower.
*/
.hero,
section > h2,
section > h3,
section > h4,
section > p,
section > ul,
section > ol,
section > .callout,
section > .team-list,
section > .footnotes,
section > .table-wrap {
  max-width: 1300px;
  margin-left: auto;
  margin-right: auto;
}

/* figures — capped narrower; still fluid downward */
section > .figure,
section > .figure-grid-2 {
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

/* formulas need !important because MathJax injects its own style attr */
section > mjx-container[display="true"] {
  max-width: 1300px;
  margin-left: auto !important;
  margin-right: auto !important;
}

/* hero */
.hero {
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2rem;
}

.hero h1 {
  /* fluid type — scales between mobile (~26px) and desktop (~31px) */
  font-size: clamp(1.4rem, 1.05rem + 1.6vw, 1.95rem);
  line-height: 1.25;
  margin: 0 0 0.7rem;
  letter-spacing: -0.01em;
  overflow-wrap: anywhere;
}

.hero .lead {
  color: var(--text-soft);
  font-size: 1.05rem;
  margin-block: 0 1.2rem;
  /* no max-width — inherits the .hero column width (1300px max) so the
     hero text aligns with everything else below it */
}

.hero .meta {
  font-size: 0.85rem;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text-muted);
}

.hero .meta a {
  color: var(--link);
  margin-right: 1rem;
}

/* sections */
section {
  margin-top: 3rem;
  scroll-margin-top: 1rem;
}

section > h2 {
  font-size: 1.4rem;
  line-height: 1.3;
  margin-block: 0 0.4rem;     /* vertical only; preserves margin-inline: auto */
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--border);
  letter-spacing: -0.005em;
}

section > h2 .appendix-tag {
  display: inline-block;
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-right: 0.6rem;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-weight: 600;
  vertical-align: middle;
}

section h3 {
  font-size: 1.08rem;
  margin-block: 1.6rem 0.5rem;
  font-weight: 700;
}

section h4 {
  font-size: 0.98rem;
  margin-block: 1.2rem 0.4rem;
  font-weight: 700;
}

section p {
  /* margin-block (vertical-only) — must NOT touch left/right margins or
     the `margin-left: auto` centering rule above is silently overridden. */
  margin-block: 0.6rem;
  text-align: justify;
  text-justify: inter-word;
  hyphens: auto;
  -webkit-hyphens: auto;
}
section ul, section ol {
  margin-block: 0.6rem;
  padding-left: 1.4rem;
}
section li {
  margin-block: 0.25rem;
  text-align: justify;
  text-justify: inter-word;
  hyphens: auto;
  -webkit-hyphens: auto;
}
/* hero lead is short — left-align reads better than justified */
.hero .lead { text-align: left; hyphens: manual; }

a { color: var(--link); text-decoration: none; }
a:hover { color: var(--link-hover); text-decoration: underline; }

/* anchor-link sigil */
.anchor-link {
  margin-left: 0.4em;
  color: var(--text-muted);
  font-weight: normal;
  text-decoration: none;
  opacity: 0;
  transition: opacity 0.15s;
  font-size: 0.85em;
}

section h2:hover .anchor-link,
section h3:hover .anchor-link { opacity: 1; }

/* code */
code { background: var(--bg-code); padding: 0.05em 0.35em; border-radius: 3px; }
pre  { background: var(--bg-code); padding: 0.8rem 1rem; border-radius: 6px; overflow-x: auto; }
pre code { background: none; padding: 0; }

/* figures */
.figure {
  margin-block: 1.4rem;
}

.figure img,
.figure object,
.figure embed {
  display: block;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: white;
}

.figure svg { display: block; max-width: 100%; height: auto; }

.figure-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.figure-grid-2 .figure { margin: 0; }

.figure-caption {
  font-size: 0.86rem;
  color: var(--text-soft);
  margin-top: 0.5rem;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.4;
}

.figure-caption .caption-label {
  font-weight: 700;
  color: var(--text);
  margin-right: 0.4em;
}

/* tables */
.table-wrap {
  overflow-x: auto;
  overflow-y: hidden;          /* prevent the spec's vertical-axis upgrade */
  margin-block: 1rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  /* Right-edge fade hints at scrollable content when the table overflows.
     Uses the "scroll shadow" trick: a fixed-position background plus
     a scroll-color local background that masks the shadow when fully
     scrolled to either edge. */
  background:
    linear-gradient(to right, white 30%, rgba(255,255,255,0)),
    linear-gradient(to right, rgba(255,255,255,0), white 70%) 100% 0,
    radial-gradient(farthest-side at 0 50%, rgba(0,0,0,0.15), rgba(0,0,0,0)),
    radial-gradient(farthest-side at 100% 50%, rgba(0,0,0,0.15), rgba(0,0,0,0)) 100% 0;
  background-repeat: no-repeat;
  background-size: 32px 100%, 32px 100%, 14px 100%, 14px 100%;
  background-attachment: local, local, scroll, scroll;
}

table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.86rem;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: white;
}

table.data th,
table.data td {
  padding: 0.45rem 0.7rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--border);
}

table.data thead th {
  background: var(--table-head);
  font-weight: 700;
  white-space: nowrap;
  position: sticky;
  top: 0;
  z-index: 1;
  border-bottom: 1px solid var(--border-strong);
}

table.data tbody tr:nth-child(even) td { background: var(--row-alt); }

table.data tbody tr:hover td { background: #eef5ff; }

table.data td.num,
table.data th.num { text-align: right; font-variant-numeric: tabular-nums; }

table.data td.center,
table.data th.center { text-align: center; }

table.data td.compact { white-space: nowrap; }

table.data .lang-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.05em 0.45em;
  border-radius: 3px;
  background: var(--tag-bg);
  color: var(--tag-fg);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

table.data .mode-full   { color: #555; }
table.data .mode-delta  { color: #555; }

table.data .cpv-name { color: #2a3eb1; }

table.data .desc {
  max-width: 38rem;
  font-family: "Charter", "Iowan Old Style", Georgia, serif;
  font-size: 0.92rem;
  line-height: 1.5;
}

table.data .cwe-link { white-space: nowrap; }

/* footnotes / mini-notes */
.footnotes {
  font-size: 0.82rem;
  color: var(--text-soft);
  margin-top: 0.6rem;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
.footnotes ul { padding-left: 1.2rem; margin: 0.3rem 0; }

/* MathJax — center every display equation within the same 72ch column
   as the paragraphs above/below. Width is the min of 72ch and the actual
   container so the formula never widens the page on a narrow viewport. */
mjx-container { font-size: 1em !important; }
mjx-container[display="true"] {
  display: block !important;
  text-align: center !important;
  /* Fill the unified content column; center math within it. */
  width: 100%;
  max-width: 100%;
  margin-block: 0.8rem !important;
}

/* callout / info box */
.callout {
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  background: #f4f6ff;
  padding: 0.9rem 1.1rem;
  border-radius: 4px;
  margin-block: 1.2rem;
  font-size: 0.93rem;
}
.callout strong { color: var(--accent); }

/* team materials (open science) — simple vertical list */
.team-list {
  margin-block: 1rem;
}

.team-entry {
  padding: 0.7rem 0 0.85rem;
  border-bottom: 1px solid var(--border);
}

.team-entry:last-child { border-bottom: none; }

.team-entry h4.team-name {
  margin: 0 0 0.35rem;
  font-size: 1rem;
  font-weight: 700;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.team-entry h4.team-name code {
  background: var(--bg-code);
  padding: 0.05em 0.4em;
  border-radius: 3px;
  font-size: 0.85em;
}

.team-entry .team-name-text { margin-left: 0.15rem; }

.team-entry .team-rank {
  display: inline-block;
  font-size: 0.72rem;
  padding: 0.05em 0.45em;
  margin-left: 0.2rem;
  border-radius: 3px;
  background: var(--tag-bg);
  color: var(--tag-fg);
  font-weight: 600;
  vertical-align: 0.05em;
}

.team-entry .team-org {
  font-weight: 400;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.team-entry ul.team-links {
  margin: 0.25rem 0 0 1.1rem;
  padding: 0;
  list-style: disc;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.9rem;
}

.team-entry ul.team-links li { margin: 0.15rem 0; }
.team-entry ul.team-links li.placeholder {
  color: var(--text-muted);
  font-style: italic;
  list-style: none;
  margin-left: -1.1rem;
}

/* misc inline marks */
.mode-mark { display: inline-block; line-height: 1; font-size: 0.95em; }
.mode-mark.delta { color: #444; }
.mode-mark.full  { color: #444; }
.mode-mark.zd    { color: #b3262a; font-weight: 600; }

.center { text-align: center; }
.muted  { color: var(--text-muted); }

/* narrow viewport — hide the fixed sidebar, expose the floating
   TOC button. The sidebar becomes a slide-in drawer toggled by JS. */
@media (max-width: 1000px) {
  main.content { margin-left: 0; }
  aside.sidebar {
    /* off-screen by default; slides in when body.toc-open is set */
    transform: translateX(-100%);
    transition: transform 0.22s ease-out;
    box-shadow: 4px 0 24px rgba(0, 0, 0, 0.18);
    width: min(320px, 86vw);
  }
  body.toc-open aside.sidebar { transform: translateX(0); }
  .toc-toggle { display: flex; }
  .figure-grid-2 { grid-template-columns: 1fr; }
}

/* phone — table density and font tweaks */
@media (max-width: 640px) {
  section > h2 { font-size: 1.2rem; }
  table.data { font-size: 0.78rem; }
  table.data th, table.data td { padding: 0.35rem 0.5rem; }
}

@media print {
  aside.sidebar { display: none; }
  .layout { grid-template-columns: 1fr; }
  main.content { padding: 0; max-width: none; }
}