/* aisafetyrisks.org — adapted from the Clarity template by Shikun Liu
   (https://shikun.io/projects/clarity): title band with blurred cover, serif reading
   column, gray media bands. Rewritten as plain CSS with an editorial, journal-like tone. */

@font-face { font-family: "Charter"; src: url("/static/fonts/charter_regular.woff2") format("woff2"); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: "Charter"; src: url("/static/fonts/charter_italic.woff2") format("woff2"); font-weight: 400; font-style: italic; font-display: swap; }
@font-face { font-family: "Charter"; src: url("/static/fonts/charter_bold.woff2") format("woff2"); font-weight: 700; font-style: normal; font-display: swap; }
@font-face { font-family: "Charter"; src: url("/static/fonts/charter_bold_italic.woff2") format("woff2"); font-weight: 700; font-style: italic; font-display: swap; }
@font-face { font-family: "Plex Sans"; src: url("/static/fonts/IBMPlexSans-Regular.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Plex Sans"; src: url("/static/fonts/IBMPlexSans-Medium.woff2") format("woff2"); font-weight: 500; font-display: swap; }
@font-face { font-family: "Plex Sans"; src: url("/static/fonts/IBMPlexSans-SemiBold.woff2") format("woff2"); font-weight: 600; font-display: swap; }
@font-face { font-family: "Plex Mono"; src: url("/static/fonts/IBMPlexMono-Regular.woff2") format("woff2"); font-weight: 400; font-display: swap; }

:root {
  --paper: #f8f7f3;
  --band: #ecebe6;
  --band-deep: #e2e5e7;
  --ink: #1d2024;
  --ink-soft: #3d434b;
  --muted: #6b7179;
  --rule: #d6d4cd;
  --accent: #1f4e79;
  --accent-soft: #dfe7ef;
  --video-bg: #111418;

  /* Epistemic status palette (shared with the video kit). */
  --k-observed: #2f7d6d;
  --k-theoretical: #3f5ea8;
  --k-interpretation: #b27a1e;
  --k-hypothesis: #7a5aa6;
  --k-threat: #a8513a;
  --k-scenario: #8a6d62;
  --k-speculation: #8c8f96;
  --k-neutral: #7a8088;

  --serif: "Charter", "Bitstream Charter", Georgia, serif;
  --sans: "Plex Sans", "IBM Plex Sans", "Helvetica Neue", Arial, sans-serif;
  --mono: "Plex Mono", "IBM Plex Mono", Menlo, monospace;

  --measure: 40rem;
  --wide: 64rem;
  --gutter: clamp(1.25rem, 5vw, 3rem);
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #15171a;
    --band: #1c1f23;
    --band-deep: #202428;
    --ink: #e9e7e1;
    --ink-soft: #c9c6bf;
    --muted: #979ba2;
    --rule: #33373d;
    --accent: #8fb6dc;
    --accent-soft: #23303d;
    --k-observed: #5fb3a1;
    --k-theoretical: #7f9be0;
    --k-interpretation: #d9a647;
    --k-hypothesis: #a98bd4;
    --k-threat: #d9826a;
    --k-scenario: #b89a8e;
    --k-speculation: #9fa3aa;
    --k-neutral: #9aa0a8;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 1.0625rem/1.65 var(--sans);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  font-kerning: normal;
  overflow-wrap: anywhere;
}
main { flex: 1; }
img, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 0.18em; text-decoration-color: color-mix(in srgb, currentColor 40%, transparent); }
a:hover { text-decoration-color: currentColor; }
::selection { background: var(--ink); color: var(--paper); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }

.wrap { width: 100%; max-width: calc(var(--wide) + 2 * var(--gutter)); margin: 0 auto; padding: 0 var(--gutter); }
.measure { max-width: var(--measure); margin-left: auto; margin-right: auto; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 1rem; top: 1rem; background: var(--paper); padding: 0.5rem 1rem; z-index: 10; }

/* ----------------------------------------------------------------- Header */
.site-header { border-bottom: 1px solid var(--rule); }
.site-header .wrap { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem 2rem; flex-wrap: wrap; padding-top: 1.1rem; padding-bottom: 1.1rem; }
.wordmark { font: 600 0.95rem/1 var(--sans); letter-spacing: 0.08em; text-transform: uppercase; text-decoration: none; }
.wordmark span { color: var(--muted); font-weight: 400; }
.nav { display: flex; gap: 1.5rem; flex-wrap: wrap; font-size: 0.9rem; }
.nav a { text-decoration: none; color: var(--ink-soft); }
.nav a:hover, .nav a[aria-current="page"] { color: var(--ink); text-decoration: underline; }

/* ----------------------------------------------------------- Title bands */
.band { background: var(--band); }
.eyebrow { font: 500 0.75rem/1.4 var(--sans); letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); margin: 0 0 0.9rem; }
.eyebrow a { text-decoration: none; }
.eyebrow .sep { margin: 0 0.5em; opacity: 0.6; }

.intro { padding-block: clamp(3rem, 9vw, 6.5rem) clamp(2.5rem, 7vw, 5rem); }
.intro h1 { font: 400 clamp(2rem, 4.6vw, 3.25rem)/1.12 var(--serif); letter-spacing: -0.01em; margin: 0 0 1.25rem; max-width: 22ch; }
.intro p { font: 400 clamp(1.05rem, 1.6vw, 1.2rem)/1.6 var(--serif); color: var(--ink-soft); max-width: 36rem; margin: 0; }

.work-title { display: grid; grid-template-columns: minmax(0, 1fr); gap: 2.5rem; padding-block: clamp(2.5rem, 7vw, 5rem); align-items: center; }
.work-title .cover { display: none; }
@media (min-width: 900px) {
  .work-title { grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: 4vw; }
  .work-title .cover { display: block; }
}
.work-title h1 { font: 400 clamp(1.9rem, 3.8vw, 2.9rem)/1.15 var(--serif); letter-spacing: -0.01em; margin: 0 0 1rem; }
.work-title .dek { font: 400 1.15rem/1.55 var(--serif); color: var(--ink-soft); margin: 0 0 1.5rem; }
.paper-meta { font-size: 0.88rem; color: var(--ink-soft); border-top: 1px solid var(--rule); padding-top: 1rem; margin: 0; }
.paper-meta dt { font: 500 0.7rem/1.4 var(--sans); letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); }
.paper-meta dd { margin: 0 0 0.6rem; }
.authors summary { cursor: pointer; list-style: none; }
.authors summary::-webkit-details-marker { display: none; }
.authors .more { font-style: italic; text-decoration: underline 1px solid var(--rule); text-underline-offset: 0.25em; }
.authors summary:hover .more { text-decoration-color: currentColor; }
.authors[open] summary { display: none; }
.paper-meta .paper-name { font: italic 400 1rem/1.4 var(--serif); color: var(--ink); }
.actions { display: flex; gap: 0.6rem; flex-wrap: wrap; margin-top: 1.25rem; }
.button { display: inline-flex; align-items: center; gap: 0.45em; font: 500 0.82rem/1 var(--sans); letter-spacing: 0.02em; padding: 0.65rem 1rem; border-radius: 999px; background: color-mix(in srgb, var(--paper) 70%, transparent); border: 1px solid var(--rule); text-decoration: none; color: var(--ink); }
.button:hover { background: var(--paper); border-color: var(--ink-soft); }
.button svg { width: 1em; height: 1em; }
.citation-unavailable { align-self: center; font-size: 0.82rem; color: var(--ink-soft); padding: 0.65rem 0.4rem; }

/* Clarity's cover: sharp image over a blurred copy of itself. */
.cover { position: relative; }
.cover img { position: relative; z-index: 1; width: 100%; aspect-ratio: 16 / 9; object-fit: cover; border-radius: 6px; }
.cover img.glow { position: absolute; inset: 0; z-index: 0; filter: blur(28px) saturate(1.2); opacity: 0.55; transform: translateY(8px) scale(0.97); }

/* ----------------------------------------------------------------- Feed */
.feed { padding-block: clamp(2.5rem, 6vw, 4rem) 5rem; }
.feed-year { font: 500 0.75rem/1 var(--sans); letter-spacing: 0.14em; color: var(--muted); display: flex; align-items: center; gap: 1rem; margin: 0 0 1.5rem; }
.feed-year::after { content: ""; flex: 1; border-top: 1px solid var(--rule); }
.feed ol { list-style: none; margin: 0 0 3rem; padding: 0; }
.entry { display: grid; grid-template-columns: minmax(0, 1fr); gap: 1.25rem; padding: 0 0 2.5rem; }
@media (min-width: 720px) { .entry { grid-template-columns: minmax(0, 20rem) minmax(0, 1fr); gap: 2.5rem; align-items: start; } }
.entry .cover img.glow { filter: blur(18px); opacity: 0.35; }
.entry h2 { font: 400 1.55rem/1.2 var(--serif); margin: 0 0 0.6rem; }
.entry h2 a { text-decoration: none; }
.entry h2 a:hover { text-decoration: underline; }
.entry .dek { font: 400 1.02rem/1.55 var(--serif); color: var(--ink-soft); margin: 0 0 0.75rem; }
.entry .source { font-size: 0.84rem; color: var(--muted); margin: 0; }
.entry .source i { font-family: var(--serif); color: var(--ink-soft); }
.draft-flag { display: inline-block; font: 600 0.68rem/1 var(--sans); letter-spacing: 0.1em; text-transform: uppercase; color: var(--k-threat); border: 1px solid currentColor; border-radius: 3px; padding: 0.25rem 0.4rem; margin-left: 0.5rem; vertical-align: 0.2em; }
.empty { font: italic 1.1rem/1.6 var(--serif); color: var(--muted); }

/* ---------------------------------------------------------------- Video */
.player { background: var(--video-bg); padding: clamp(1rem, 4vw, 3rem) 0; }
.player video { width: 100%; aspect-ratio: 16 / 9; background: #000; border-radius: 4px; }
.chapters { list-style: none; margin: 1rem 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 0.35rem 1.25rem; font-size: 0.82rem; color: #b9bcc2; }
.chapters a { text-decoration: none; color: inherit; }
.chapters a:hover { color: #fff; }
.chapters time { font-family: var(--mono); font-size: 0.78rem; color: #7f848c; margin-right: 0.4em; }

/* -------------------------------------------------------------- Article */
.article { padding-block: clamp(2.5rem, 6vw, 4.5rem) 2rem; }
.article section { margin: 0 auto 3.5rem; }
.article h2 { font: 600 0.78rem/1.4 var(--sans); letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); margin: 0 0 1.25rem; padding-bottom: 0.6rem; border-bottom: 1px solid var(--rule); }
.article h3 { font: 400 1.45rem/1.25 var(--serif); margin: 2.25rem 0 0.75rem; }
.prose { font: 400 1.14rem/1.72 var(--serif); color: var(--ink); }
.prose p { margin: 0 0 1.1em; }
.prose ul, .prose ol { padding-left: 1.25em; margin: 0 0 1.1em; }
.prose li { margin-bottom: 0.4em; }
.prose blockquote { margin: 1.5em 0; padding-left: 1.2em; border-left: 2px solid var(--rule); color: var(--ink-soft); font-style: italic; }
.prose h2 { font: 400 1.45rem/1.25 var(--serif); text-transform: none; letter-spacing: 0; color: var(--ink); border: 0; padding: 0; margin: 2em 0 0.6em; }
.prose h3 { font: 600 1.05rem/1.4 var(--sans); margin: 1.8em 0 0.5em; }
.prose code { font: 0.88em var(--mono); background: var(--band); padding: 0.1em 0.3em; border-radius: 3px; }
.lede { font-size: 1.28rem; line-height: 1.6; }

.cites { font: 500 0.62em/1 var(--sans); margin-left: 0.1em; vertical-align: 0.55em; }
.cite { text-decoration: none; color: var(--accent); padding: 0 0.12em; }
.cite + .cite::before { content: ","; color: var(--muted); margin-right: 0.1em; }
.cite:hover { text-decoration: underline; }

/* Epistemic labels: a colored rule + small caps name, used for findings, limitations, evidence. */
.kind { font: 600 0.68rem/1.4 var(--sans); letter-spacing: 0.1em; text-transform: uppercase; color: var(--k); display: inline-flex; align-items: center; gap: 0.45em; }
.kind::before { content: ""; flex-shrink: 0; width: 0.6em; height: 0.6em; border-radius: 50%; background: var(--k); }
[data-kind] { --k: var(--k-neutral); }
[data-kind="observed_result"] { --k: var(--k-observed); }
[data-kind="theoretical_result"] { --k: var(--k-theoretical); }
[data-kind="author_interpretation"] { --k: var(--k-interpretation); }
[data-kind="hypothesis"] { --k: var(--k-hypothesis); }
[data-kind="threat_model"] { --k: var(--k-threat); }
[data-kind="future_scenario"] { --k: var(--k-scenario); }
[data-kind="speculation"] { --k: var(--k-speculation); }
[data-kind="limitation"], [data-kind="authors"] { --k: var(--k-threat); }
[data-kind="editorial"] { --k: var(--k-neutral); }

.findings, .limitations { list-style: none; padding: 0; margin: 0; }
.findings li, .limitations li { border-left: 2px solid var(--k); padding: 0.1rem 0 0.1rem 1.1rem; margin: 0 0 1.6rem; }
.findings .kind, .limitations .kind { margin-bottom: 0.45rem; }
.findings p, .limitations p { margin: 0; }

.legend { font-size: 0.82rem; color: var(--muted); display: flex; flex-wrap: wrap; gap: 0.5rem 1.25rem; margin: -0.25rem 0 1.75rem; }

/* Evidence register: the journal footnotes of this site. */
.evidence { list-style: none; padding: 0; margin: 0; counter-reset: ev; }
.evidence > li { display: grid; grid-template-columns: 2.2rem minmax(0, 1fr); gap: 0 0.75rem; padding: 1.1rem 0; border-top: 1px solid var(--rule); scroll-margin-top: 1.5rem; }
.evidence > li:target { background: var(--accent-soft); margin: 0 -0.75rem; padding-left: 0.75rem; padding-right: 0.75rem; border-radius: 4px; }
.evidence .n { font: 500 0.95rem/1.5 var(--sans); color: var(--accent); }
.evidence .statement { font: 400 1rem/1.55 var(--sans); margin: 0.35rem 0 0.6rem; }
.evidence blockquote { margin: 0 0 0.5rem; font: italic 400 1rem/1.6 var(--serif); color: var(--ink-soft); padding-left: 0.9rem; border-left: 2px solid var(--rule); }
.evidence blockquote cite { display: block; font: normal 400 0.78rem/1.4 var(--sans); color: var(--muted); margin-top: 0.3rem; }

.references { padding-left: 1.2em; font-size: 0.95rem; }
.references li { margin-bottom: 0.6rem; }
.references .note { color: var(--muted); }

/* Later research is editorial context, with its own dated sources. */
.impact-meta { font-size: 0.82rem; color: var(--ink-soft); margin: -0.25rem 0 1.25rem; }
.impact-examples { list-style: none; padding: 0; margin: 1.5rem 0; }
.impact-examples li { padding: 1.25rem 0; border-top: 1px solid var(--rule); }
.article .impact-examples h3 { font: 500 1rem/1.5 var(--sans); margin: 0 0 0.5rem; }
.impact-examples p { font: 400 1.05rem/1.65 var(--serif); margin: 0; }
.impact-year { color: var(--ink-soft); font-size: 0.88rem; font-weight: 400; white-space: nowrap; }
.impact-citations { font-size: 0.82rem; line-height: 1.6; color: var(--ink-soft); }
.impact-citations p { margin: 0 0 0.35rem; }


.draft-banner { background: var(--k-threat); color: #fff; font: 500 0.85rem/1.4 var(--sans); text-align: center; padding: 0.6rem 1rem; }

/* ----------------------------------------------------------------- Pages */
.page { padding-block: clamp(3rem, 8vw, 5.5rem) 4rem; }
.page-mark { display: block; width: 96px; height: 96px; border-radius: 50%; margin: 0 0 1.75rem; }
.page h1 { font: 400 clamp(2rem, 4.2vw, 2.9rem)/1.15 var(--serif); margin: 0 0 1.5rem; }

/* Doomsday examples: readable three-beat storyboards until their scenes are animated. */
.page-doomsday .measure { max-width: var(--wide); }
.page-doomsday h1,
.page-doomsday .prose > :not(.scenario-examples) { max-width: var(--measure); margin-left: auto; margin-right: auto; }
.scenario-examples { margin: 2.5rem 0 3.5rem; }
.scenario-example { background: var(--band); padding: clamp(1.25rem, 3vw, 2rem); margin: 1.2rem 0; }
.scenario-example::before { content: "Hypothetical scenario"; display: block; font: 600 0.7rem/1.4 var(--sans); letter-spacing: 0.1em; text-transform: uppercase; color: var(--k-scenario); margin-bottom: 0.8rem; }
.prose .scenario-example h4 { font: 400 clamp(1.35rem, 2.5vw, 1.8rem)/1.25 var(--serif); margin: 0 0 0.55rem; max-width: 34ch; }
.prose .scenario-steps { list-style: none; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; padding: 0; margin: 0 0 1.5rem; counter-reset: scenario-step; }
.prose .scenario-steps li { counter-increment: scenario-step; min-width: 0; position: relative; margin: 0; padding: 2.1rem 1.25rem 0 0; border-top: 1px solid var(--rule); font: 400 0.98rem/1.55 var(--sans); }
.prose .scenario-steps li:not(:last-child)::after { content: ""; position: absolute; top: -0.25rem; right: 0.45rem; width: 0.4rem; height: 0.4rem; border-top: 1px solid var(--muted); border-right: 1px solid var(--muted); transform: rotate(45deg); }
.prose .scenario-steps li::before { content: counter(scenario-step, decimal-leading-zero); position: absolute; top: 0.45rem; left: 0; font: 500 0.75rem/1 var(--mono); color: var(--muted); }
.scenario-steps strong { display: block; font-weight: 600; color: var(--ink); margin-bottom: 0.25rem; }
.prose .scenario-endpoint { font: 400 1.12rem/1.55 var(--serif); max-width: 52rem; margin: 0 0 1.8rem; }
.scenario-endpoint strong { color: var(--k-threat); }
.prose .scenario-evidence { font: 400 0.86rem/1.55 var(--sans); color: var(--muted); margin: 0; max-width: 70ch; }
.scenario-evidence a { color: var(--accent); }
@media (max-width: 680px) {
  .scenario-example { padding: 1.25rem; }
  .prose .scenario-steps { grid-template-columns: minmax(0, 1fr); margin-bottom: 1rem; }
  .prose .scenario-steps li { border-top: 0; border-left: 1px solid var(--rule); padding: 0 0 1.25rem 2.75rem; }
  .prose .scenario-steps li:last-child { padding-bottom: 0; }
  .prose .scenario-steps li::before { top: 0.15rem; left: 0.7rem; }
  .prose .scenario-steps li:not(:last-child)::after { top: auto; bottom: 0.7rem; left: 0.65rem; right: auto; transform: rotate(135deg); }
}

/* ---------------------------------------------------------------- Footer */
.site-footer { border-top: 1px solid var(--rule); font-size: 0.84rem; color: var(--muted); padding: 2.5rem 0 3rem; }
.site-footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem 2rem; }
.footer-about { display: flex; align-items: center; gap: 1rem; max-width: 37rem; }
.site-footer p { margin: 0; }
.footer-mark { width: 40px; height: 40px; border-radius: 50%; flex: none; }
.site-footer nav { display: flex; gap: 1.25rem; flex-wrap: wrap; }
.site-footer a { color: var(--ink-soft); }

@media print {
  .site-header nav, .player, .actions, .site-footer nav { display: none; }
  body { background: #fff; }
}