@font-face { font-family: "Source Serif 4"; src: url("fonts/source-serif-4-latin-400-normal.woff2") format("woff2"); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: "Source Serif 4"; src: url("fonts/source-serif-4-latin-400-italic.woff2") format("woff2"); font-weight: 400; font-style: italic; font-display: swap; }
@font-face { font-family: "Source Serif 4"; src: url("fonts/source-serif-4-latin-600-normal.woff2") format("woff2"); font-weight: 600; font-style: normal; font-display: swap; }
@font-face { font-family: "IBM Plex Mono"; src: url("fonts/ibm-plex-mono-latin-400-normal.woff2") format("woff2"); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: "IBM Plex Mono"; src: url("fonts/ibm-plex-mono-latin-500-normal.woff2") format("woff2"); font-weight: 500; font-style: normal; font-display: swap; }

/* Dark gallery is the default theme. */
:root {
  color-scheme: dark;
  --bg: #121110;
  --surface: #1b1a18;
  --ink: #ece6da;
  --ink-muted: #a8a195;
  --rule: #34302b;
  --accent: #d2ad72;
  --focus: #f0c987;
  --type-virus: #e37b72;
  --type-worm: #e59d58;
  --type-trojan: #d8bb55;
  --type-ransomware: #bd92e3;
  --type-botnet: #72c790;
  --type-state: #78ade3;
  --type-supply-chain: #57c4c4;
  --type-exploit: #e389b6;
  --serif: "Source Serif 4", "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  --mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --measure: 38rem;
  --toolbar-h: 4.5rem;
  --rail-h: 0px;
}

@media (prefers-color-scheme: light) {
  :root {
    color-scheme: light;
    --bg: #f3efe7;
    --surface: #fbf8f2;
    --ink: #1f1b16;
    --ink-muted: #5c554b;
    --rule: #d8d0c2;
    --accent: #8a6526;
    --focus: #8a6526;
    --type-virus: #b0352d;
    --type-worm: #a55410;
    --type-trojan: #7f6608;
    --type-ransomware: #7646ad;
    --type-botnet: #26744a;
    --type-state: #2c5f9e;
    --type-supply-chain: #17716f;
    --type-exploit: #a1366c;
  }
}

[data-type="virus"] { --type-color: var(--type-virus); }
[data-type="worm"] { --type-color: var(--type-worm); }
[data-type="trojan"] { --type-color: var(--type-trojan); }
[data-type="ransomware"] { --type-color: var(--type-ransomware); }
[data-type="botnet"] { --type-color: var(--type-botnet); }
[data-type="state"] { --type-color: var(--type-state); }
[data-type="supply-chain"] { --type-color: var(--type-supply-chain); }
[data-type="exploit"] { --type-color: var(--type-exploit); }

*, *::before, *::after { box-sizing: border-box; }

html { scroll-padding-top: calc(var(--toolbar-h) + var(--rail-h) + 1rem); }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 1.0625rem/1.6 var(--serif);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration-color: var(--accent); text-underline-offset: 0.2em; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 3px; border-radius: 2px; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip-path: inset(50%); white-space: nowrap;
}

.skip {
  position: absolute; left: 1rem; top: -3rem; z-index: 20;
  padding: 0.5rem 0.75rem; background: var(--surface); border: 1px solid var(--accent);
  font: 500 0.8rem var(--mono);
}
.skip:focus { top: 1rem; }

.wrap { max-width: 72rem; margin-inline: auto; padding-inline: clamp(1rem, 4vw, 2.5rem); }

/* Masthead */
.masthead { padding-block: clamp(3rem, 8vw, 6rem) 2.5rem; border-bottom: 1px solid var(--rule); }
.masthead__kicker, .masthead__meta {
  margin: 0; font: 500 0.75rem/1.4 var(--mono); letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-muted);
}
.masthead h1 {
  margin: 0.75rem 0 1rem; font-weight: 600; font-size: clamp(2.5rem, 7vw, 4.75rem); line-height: 1.02; letter-spacing: -0.02em;
}
.masthead__lede { max-width: var(--measure); margin: 0 0 1.5rem; font-size: 1.2rem; font-style: italic; color: var(--ink-muted); }

/* Toolbar: filters and search */
.toolbar {
  position: sticky; top: 0; z-index: 10;
  background: var(--bg);
  background: color-mix(in srgb, var(--bg) 94%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--rule);
}
.toolbar__inner { display: flex; flex-wrap: wrap; align-items: center; gap: 0.6rem 1rem; padding-block: 0.75rem; }
.toolbar__inner > * { min-width: 0; }
.chips { display: flex; flex-wrap: wrap; gap: 0.375rem; flex: 1 1 32rem; }
.chip {
  display: inline-flex; align-items: center; gap: 0.45rem; flex: none;
  padding: 0.4rem 0.7rem; border: 1px solid var(--rule); border-radius: 999px;
  background: transparent; color: var(--ink-muted); font: 400 0.78rem/1 var(--mono); cursor: pointer;
}
.chip:hover { color: var(--ink); border-color: var(--ink-muted); }
.chip[aria-pressed="true"] {
  color: var(--ink); border-color: var(--type-color);
  background: color-mix(in srgb, var(--type-color) 16%, transparent);
}
.chip__swatch { width: 0.55rem; height: 0.55rem; border-radius: 50%; background: var(--type-color); }
.chip__count { opacity: 0.75; }
.search input {
  width: 14rem; max-width: 100%; padding: 0.5rem 0.75rem;
  border: 1px solid var(--rule); border-radius: 6px; background: var(--surface); color: var(--ink);
  font: 400 0.9rem var(--mono);
}
.search input::placeholder { color: var(--ink-muted); }
.reset {
  padding: 0; border: 0; background: none; color: var(--accent); cursor: pointer;
  font: 500 0.78rem var(--mono); text-decoration: underline; text-underline-offset: 0.2em;
}
.toolbar__status { flex-basis: 100%; margin: 0; font: 400 0.72rem var(--mono); color: var(--ink-muted); }

/* Layout: decade rail and exhibits */
.layout { display: grid; grid-template-columns: 8rem minmax(0, 1fr); gap: clamp(1.5rem, 4vw, 4rem); padding-block: 2.5rem 5rem; }
.rail { position: sticky; top: calc(var(--toolbar-h) + 1.5rem); align-self: start; }
.rail ol { margin: 0; padding: 0; list-style: none; border-left: 1px solid var(--rule); }
.rail a {
  display: flex; justify-content: space-between; gap: 0.5rem;
  margin-left: -1px; padding: 0.3rem 0 0.3rem 0.9rem; border-left: 2px solid transparent;
  color: var(--ink-muted); font: 400 0.8rem/1.3 var(--mono); text-decoration: none;
}
.rail a:hover { color: var(--ink); }
.rail a[aria-current="true"] { color: var(--ink); border-left-color: var(--accent); }
.rail__count { opacity: 0.7; }

.decade + .decade { margin-top: 3.5rem; }
.decade__heading {
  margin: 0 0 1.25rem; padding-bottom: 0.75rem; border-bottom: 1px solid var(--rule);
  color: var(--accent); font: 500 0.8rem/1 var(--mono); letter-spacing: 0.16em; text-transform: uppercase;
}

/* Placard */
.placard {
  position: relative; max-width: 46rem; padding: 1.5rem 1.75rem;
  background: var(--surface); border-left: 3px solid var(--type-color); border-radius: 2px;
}
.placard + .placard { margin-top: 1.25rem; }
.placard:focus { outline: none; }
.placard__meta {
  display: flex; flex-wrap: wrap; gap: 0.25rem 0.9rem; margin: 0 0 0.5rem;
  color: var(--ink-muted); font: 400 0.78rem/1.4 var(--mono); letter-spacing: 0.02em;
}
.placard__type::before {
  content: ""; display: inline-block; width: 0.5rem; height: 0.5rem; margin-right: 0.4rem;
  border-radius: 50%; background: var(--type-color); vertical-align: 0.05em;
}
.placard__datenote { flex-basis: 100%; font-style: italic; }
.placard__name { margin: 0; font-weight: 600; font-size: clamp(1.5rem, 3vw, 1.9rem); line-height: 1.15; letter-spacing: -0.01em; }
.placard__aliases { margin: 0.25rem 0 0; font-style: italic; color: var(--ink-muted); }
.placard__summary { margin-top: 1rem; }
.placard__summary p { max-width: var(--measure); margin: 0 0 0.85rem; white-space: pre-line; }
.placard__quote { margin: 1rem 0; padding-left: 1rem; border-left: 1px solid var(--accent); font-style: italic; white-space: pre-line; }
.placard__facts { display: grid; grid-template-columns: max-content 1fr; gap: 0.35rem 1rem; margin: 1rem 0 0; font-size: 0.95rem; }
.placard__facts dt { color: var(--ink-muted); font: 500 0.72rem/1.9 var(--mono); letter-spacing: 0.1em; text-transform: uppercase; }
.placard__facts dd { margin: 0; overflow-wrap: anywhere; }
.placard__sources { margin-top: 1rem; font-size: 0.9rem; }
.placard__sources summary {
  color: var(--ink-muted); font: 500 0.75rem var(--mono); letter-spacing: 0.1em; text-transform: uppercase; cursor: pointer;
}
.placard__sources ol { margin: 0.6rem 0 0; padding-left: 1.25rem; }
.placard__sources li { overflow-wrap: anywhere; }
.placard__sources li + li { margin-top: 0.35rem; }
.source__meta { color: var(--ink-muted); }
.placard__permalink {
  position: absolute; top: 1.25rem; right: 1.25rem;
  color: var(--ink-muted); font: 0.8rem var(--mono); text-decoration: none; opacity: 0;
}
.placard:hover .placard__permalink, .placard__permalink:focus-visible { opacity: 1; }
@media (hover: none) { .placard__permalink { opacity: 0.6; } }

.placard.is-target { animation: target-ring 2.4s ease-out; }
@keyframes target-ring {
  from { box-shadow: 0 0 0 2px var(--accent); }
  to { box-shadow: 0 0 0 2px transparent; }
}

@supports (animation-timeline: view()) {
  @media (prefers-reduced-motion: no-preference) {
    .placard:not(.is-target) { animation: rise linear both; animation-timeline: view(); animation-range: entry 0% entry 35%; }
  }
}
@keyframes rise {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: none; }
}
@media (prefers-reduced-motion: reduce) {
  .placard.is-target { animation: none; box-shadow: 0 0 0 2px var(--accent); }
}

.notice { font-style: italic; color: var(--ink-muted); }
.notice .reset { font-style: normal; margin-left: 0.25rem; }

.colophon { border-top: 1px solid var(--rule); padding-block: 2rem 3rem; color: var(--ink-muted); font: 0.8rem/1.6 var(--mono); }

/* Narrow screens: chips scroll sideways, the rail becomes a sticky strip. */
@media (max-width: 52rem) {
  :root { --rail-h: 2.75rem; }
  .chips { flex: 1 1 100%; flex-wrap: nowrap; overflow-x: auto; scrollbar-width: none; }
  .search { flex: 1 1 auto; }
  .search input { width: 100%; }
  .layout { grid-template-columns: minmax(0, 1fr); gap: 1rem; padding-block-start: 0; }
  .rail {
    top: var(--toolbar-h); z-index: 9; margin-inline: calc(-1 * clamp(1rem, 4vw, 2.5rem));
    padding-inline: clamp(1rem, 4vw, 2.5rem); background: var(--bg); border-bottom: 1px solid var(--rule);
    overflow-x: auto; scrollbar-width: none;
  }
  .rail ol { display: flex; gap: 0.25rem; border-left: 0; }
  .rail a {
    margin: 0; padding: 0.7rem 0.6rem 0.6rem; border-left: 0; border-bottom: 2px solid transparent; white-space: nowrap;
  }
  .rail a[aria-current="true"] { border-bottom-color: var(--accent); }
  .placard { padding: 1.25rem 1.1rem; }
  .placard__facts { grid-template-columns: minmax(0, 1fr); gap: 0.1rem; }
  .placard__facts dd + dt { margin-top: 0.5rem; }
}