/* Mouseion, the House of Memory. Tokens first; components read only tokens. */
@font-face { font-family: "Requiem"; src: url(../fonts/requiem-display.woff2?v=20261016) format("woff2"); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: "Requiem"; src: url(../fonts/requiem-display-italic.woff2?v=20261016) format("woff2"); font-weight: 400; font-style: italic; font-display: swap; }
@font-face { font-family: "Requiem SC"; src: url(../fonts/requiem-text-sc.woff2?v=20261016) format("woff2"); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: "Zapf Humanist"; src: url(../fonts/zapf-400.woff2?v=20261016) format("woff2"); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: "Zapf Humanist"; src: url(../fonts/zapf-400-italic.woff2?v=20261016) format("woff2"); font-weight: 400; font-style: italic; font-display: swap; }
@font-face { font-family: "Zapf Humanist"; src: url(../fonts/zapf-700.woff2?v=20261016) format("woff2"); font-weight: 700; font-style: normal; font-display: swap; }
@font-face { font-family: "Plex Mono"; src: url(../fonts/plex-mono-400.woff2?v=20261016) format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Plex Mono"; src: url(../fonts/plex-mono-700.woff2?v=20261016) format("woff2"); font-weight: 700; font-display: swap; }

:root {
  --color-shade: #1d1712;          /* umber: the room in shadow */
  --color-shade-2: #15100c;
  --color-shade-rgb: 22, 16, 12;
  --color-ivory: #f3ebdf;          /* text on shade */
  --color-ivory-2: #d9ccba;        /* quieter text on shade */
  --color-ivory-rgb: 243, 235, 223;
  --color-honey: #eab866;          /* the sun: one accent */
  --color-honey-ink: #1d1409;
  --color-bronze: #c08a52;         /* the second accent: bronze */
  --color-stone: #efe7da;
  --color-sky: #8fb4dc;
  --color-line: rgba(243, 235, 223, 0.22);
  --color-honey-hi: #f3c77e;
  --color-honey-line: rgba(234, 184, 102, 0.28);
  --color-glow-shadow: rgba(8, 5, 3, 0.55);
  --color-code-bg: rgba(14, 10, 8, 0.78);
  --font-display: "Requiem", "Iowan Old Style", Georgia, serif;
  --font-sc: "Requiem SC", "Requiem", Georgia, serif;
  --font-text: "Zapf Humanist", Optima, Candara, "Segoe UI", sans-serif;
  --font-mono: "Plex Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;
  --ease-premium: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast: 150ms; --duration-normal: 200ms; --duration-slow: 300ms;
  --pad-x: clamp(1.25rem, 5.5vw, 8rem);
  --panel: min(36rem, 100%);
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--color-shade); color: var(--color-ivory); font: 400 1.125rem/1.62 var(--font-text); -webkit-font-smoothing: antialiased; }
img, svg, canvas { display: block; max-width: 100%; }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--color-honey); outline-offset: 3px; border-radius: 4px; }
[hidden] { display: none !important; }
.vh { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.skip { position: fixed; left: 1rem; top: -4rem; z-index: 60; padding: 0.7rem 1rem; background: var(--color-honey); color: var(--color-honey-ink); border-radius: 6px; font-weight: 700; text-decoration: none; transition: top var(--duration-normal) var(--ease-premium); }
.skip:focus { top: 1rem; }

/* ------------------------------------------------------------------ the room behind the page */
.stage { position: fixed; inset: 0; z-index: 0; overflow: hidden; background: var(--color-shade); }
.stage__still, .stage__canvas { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.stage__canvas { opacity: 0; transition: opacity 900ms var(--ease-premium); }
.stage.is-live .stage__canvas { opacity: 1; }
.stage__still { animation: still-drift 30s ease-in-out infinite alternate; transform-origin: 60% 40%; }
.stage.is-live .stage__still { animation: none; }
@keyframes still-drift { from { transform: scale(1.02) translateX(0); } to { transform: scale(1.06) translateX(-1.2%); } }
/* the shade: the room's own shadow, deepened where the words stand. Three fixed layers (left, right, centre); only their
   opacity changes when the words change side, so the full-screen layer is never repainted. */
.stage__shade { position: absolute; inset: 0; pointer-events: none; }
.stage__shade::before, .stage__shade::after, .stage__shade i { content: ""; position: absolute; inset: 0; opacity: 0; transition: opacity 700ms var(--ease-premium); will-change: opacity; }
.stage__shade::before { background: linear-gradient(90deg, rgba(var(--color-shade-rgb), 0.9) 0%, rgba(var(--color-shade-rgb), 0.86) 34%, rgba(var(--color-shade-rgb), 0.55) 47%, rgba(var(--color-shade-rgb), 0.12) 60%, rgba(var(--color-shade-rgb), 0) 68%); }
.stage__shade::after { background: linear-gradient(270deg, rgba(var(--color-shade-rgb), 0.9) 0%, rgba(var(--color-shade-rgb), 0.86) 34%, rgba(var(--color-shade-rgb), 0.55) 47%, rgba(var(--color-shade-rgb), 0.12) 60%, rgba(var(--color-shade-rgb), 0) 68%); }
.stage__shade i { background: radial-gradient(ellipse 60% 55% at 50% 52%, rgba(var(--color-shade-rgb), 0.82), rgba(var(--color-shade-rgb), 0.3) 70%, rgba(var(--color-shade-rgb), 0)); }
body:not([data-side]) .stage__shade::before, body[data-side="left"] .stage__shade::before { opacity: 1; }
body[data-side="right"] .stage__shade::after { opacity: 1; }
body[data-side="center"] .stage__shade i { opacity: 1; }

.stage-note { position: fixed; z-index: 30; left: 50%; bottom: 1.1rem; transform: translateX(-50%); display: flex; gap: 0.8rem; align-items: center; pointer-events: none; }
.stage-note p { margin: 0; padding: 0.5rem 0.9rem; background: rgba(var(--color-shade-rgb), 0.86); border: 1px solid var(--color-line); border-radius: 999px; font-size: 0.875rem; color: var(--color-ivory-2); pointer-events: auto; }
.stage-note p[hidden] { display: none; }
.stage-note .btn { pointer-events: auto; }

.roomname { position: fixed; z-index: 20; left: var(--pad-x); bottom: 1.1rem; margin: 0; padding: 0.55rem 0.9rem; border-radius: 999px; background: rgba(var(--color-shade-rgb), 0.82); font: 400 0.95rem/1 var(--font-sc); letter-spacing: 0.08em; color: var(--color-ivory-2); }
.roomname__num { color: var(--color-honey); margin-right: 0.45rem; }
.pause { position: fixed; z-index: 30; right: var(--pad-x); bottom: 1.1rem; display: inline-flex; gap: 0.45rem; align-items: center; padding: 0.55rem 0.95rem; min-height: 2.75rem;
  background: rgba(var(--color-shade-rgb), 0.78); color: var(--color-ivory); border: 1px solid var(--color-line); border-radius: 999px; font: 400 0.875rem/1 var(--font-text); cursor: pointer;
  transition: background-color var(--duration-normal) var(--ease-premium), border-color var(--duration-normal) var(--ease-premium); }
.pause svg { width: 1rem; height: 1rem; }
.pause:hover { border-color: var(--color-honey); }
.pause[hidden] { display: none; }

/* ------------------------------------------------------------------ header */
.hdr { position: fixed; z-index: 40; inset: 0 0 auto 0; display: flex; align-items: center; gap: 1.5rem; padding: 0.9rem var(--pad-x);
  background: linear-gradient(180deg, rgba(var(--color-shade-rgb), 0.9), rgba(var(--color-shade-rgb), 0.55) 70%, rgba(var(--color-shade-rgb), 0)); }
.hdr__brand { display: inline-flex; align-items: center; gap: 0.6rem; text-decoration: none; font: 400 1.55rem/1 var(--font-display); letter-spacing: 0.01em; }
.hdr__mark { width: 1.9rem; height: 1.9rem; color: var(--color-ivory); }
.hdr__panel { display: flex; align-items: center; gap: 1.75rem; margin-left: auto; }
.hdr__nav, .hdr__family { display: flex; gap: 1.25rem; align-items: center; }
.hdr__nav a, .hdr__family a { font-size: 0.95rem; color: var(--color-ivory-2); text-decoration: none; padding: 0.35rem 0; border-bottom: 1px solid transparent; transition: color var(--duration-fast) var(--ease-premium), border-color var(--duration-fast) var(--ease-premium); }
.hdr__nav a:hover, .hdr__family a:hover { color: var(--color-ivory); }
.hdr__nav a[aria-current="page"] { color: var(--color-ivory); border-color: var(--color-honey); }
.hdr__family { padding-left: 1.5rem; border-left: 1px solid var(--color-line); }
.hdr__family a { font-size: 0.875rem; }
.hdr__menu { display: none; }
.hdr__sound:empty { display: none; }

/* ------------------------------------------------------------------ chapters */
main { position: relative; z-index: 10; }
.ch { min-height: 100svh; display: flex; align-items: center; padding: 6.5rem var(--pad-x) 5.5rem; }
.ch--right { justify-content: flex-end; }
.ch--center { justify-content: center; text-align: center; }
.ch--center .panel { margin-inline: auto; }
.panel { width: var(--panel); min-width: 0; max-width: 100%; }
.panel > * + * { margin-top: 1.15rem; }
.panel p { margin-bottom: 0; color: var(--color-ivory-2); }
.panel .lede { font-size: 1.25rem; color: var(--color-ivory); }
h1, h2 { margin: 0; font-family: var(--font-display); font-weight: 400; color: var(--color-ivory); letter-spacing: -0.005em; text-wrap: balance; }
h1 { font-size: clamp(2.6rem, 1.7rem + 1.9vw, 4.75rem); line-height: 1.02; }
h2 { font-size: clamp(2.1rem, 1.5rem + 1.3vw, 3.6rem); line-height: 1.05; }
h1 em, h2 em { display: block; color: var(--color-honey); }
h3 { font: 400 1.05rem/1.3 var(--font-sc); letter-spacing: 0.06em; color: var(--color-ivory); margin: 1.6rem 0 0.55rem; }
.kicker { font: 400 1.05rem/1.3 var(--font-sc) !important; letter-spacing: 0.08em; color: var(--color-honey) !important; }
.h1-topic { display: block; margin: 0 0 0.9rem; font: 400 1.05rem/1.3 var(--font-sc); letter-spacing: 0.08em; color: var(--color-honey); }
code { font: 400 0.92em/1 var(--font-mono); color: var(--color-ivory); }
.link { color: var(--color-honey); text-decoration: underline; text-underline-offset: 0.2em; text-decoration-thickness: 1px; }
.link:hover { text-decoration-thickness: 2px; }
.row { display: flex; flex-wrap: wrap; gap: 0.8rem; align-items: center; }
.row--center { justify-content: center; }

/* buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem; min-height: 2.9rem; padding: 0.7rem 1.35rem; border-radius: 999px; font: 700 1rem/1 var(--font-text); text-decoration: none; cursor: pointer; border: 1px solid transparent;
  transition: background-color var(--duration-normal) var(--ease-premium), border-color var(--duration-normal) var(--ease-premium), color var(--duration-normal) var(--ease-premium), transform var(--duration-fast) var(--ease-premium); }
.btn:active { transform: scale(0.98); }
.btn--honey { background: var(--color-honey); color: var(--color-honey-ink); }
.btn--honey:hover { background: var(--color-honey-hi); }
.btn--line { background: rgba(var(--color-shade-rgb), 0.35); color: var(--color-ivory); border-color: rgba(var(--color-ivory-rgb), 0.45); }
.btn--line:hover { border-color: var(--color-honey); }
.btn--quiet { background: rgba(var(--color-shade-rgb), 0.86); color: var(--color-ivory); border-color: var(--color-line); min-height: 2.5rem; padding: 0.5rem 1rem; font-size: 0.875rem; }

/* commands */
.cmd { position: relative; display: flex; align-items: stretch; background: var(--color-code-bg); border: 1px solid var(--color-honey-line); border-radius: 10px; }
.cmd pre { margin: 0; flex: 1; min-width: 0; padding: 0.95rem 1rem; overflow-x: auto; font: 400 0.95rem/1.6 var(--font-mono); color: var(--color-ivory); text-shadow: none; }
.cmd code { font: inherit; white-space: pre; }
.cmd .pr { color: var(--color-honey); user-select: none; }
.copy { flex: none; display: inline-flex; align-items: center; gap: 0.4rem; margin: 0.45rem; padding: 0 0.8rem; min-height: 2.5rem; border-radius: 7px; border: 1px solid var(--color-line); background: rgba(var(--color-ivory-rgb), 0.06); color: var(--color-ivory); font: 400 0.875rem/1 var(--font-text); cursor: pointer;
  transition: background-color var(--duration-normal) var(--ease-premium), border-color var(--duration-normal) var(--ease-premium), color var(--duration-normal) var(--ease-premium); }
.copy svg { width: 1rem; height: 1rem; }
.copy:hover { border-color: var(--color-honey); }
.copy[data-state="done"] { background: var(--color-honey); color: var(--color-honey-ink); border-color: var(--color-honey); }
.cmd__label { margin-bottom: 0.45rem !important; }

/* figures */
.figures { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.2rem 2rem; margin: 1.6rem 0 0; }
.figures div { border-top: 1px solid var(--color-line); padding-top: 0.7rem; }
.figures dt { font: 400 1rem/1.2 var(--font-sc); letter-spacing: 0.06em; color: var(--color-ivory-2); }
.figures dd { margin: 0.2rem 0 0; font: 400 clamp(2.5rem, 1.7rem + 1.4vw, 4rem)/1 var(--font-display); color: var(--color-ivory); font-variant-numeric: lining-nums; }
.figures dd small { font-size: 0.45em; color: var(--color-honey); margin: 0 0.1em; }

/* the session */
.session { display: flex; flex-wrap: wrap; align-items: center; gap: 0.9rem 1.2rem; margin-top: 1.6rem !important; padding-top: 1.1rem; border-top: 1px solid var(--color-line); }
.session__text { margin: 0 !important; flex: 1 1 16rem; font-style: italic; color: var(--color-ivory) !important; }

/* rooms list */
.rooms { list-style: none; margin: 1.4rem 0 0; padding: 0; border-top: 1px solid var(--color-line); }
.rooms a { display: grid; grid-template-columns: 2.6rem minmax(0, 1fr) auto; gap: 0.8rem; align-items: baseline; padding: 0.85rem 0.2rem; border-bottom: 1px solid var(--color-line); text-decoration: none;
  transition: background-color var(--duration-normal) var(--ease-premium); }
.rooms a:hover { background: rgba(var(--color-ivory-rgb), 0.05); }
.rooms__num { font: 400 1.05rem/1 var(--font-sc); color: var(--color-honey); }
.rooms__name { font: 400 1.55rem/1.1 var(--font-display); color: var(--color-ivory); }
.rooms__what { font-size: 0.95rem; color: var(--color-ivory-2); text-align: right; }

/* lists and ledgers used by the rooms */
.ledger { list-style: none; margin: 1.2rem 0 0; padding: 0; border-top: 1px solid var(--color-line); }
.ledger li { display: grid; grid-template-columns: minmax(7rem, 11rem) minmax(0, 1fr); gap: 1rem; padding: 0.75rem 0; border-bottom: 1px solid var(--color-line); }
.ledger b { font: 400 1.05rem/1.35 var(--font-sc); letter-spacing: 0.04em; color: var(--color-ivory); font-weight: 400; }
.ledger span { color: var(--color-ivory-2); }
.tags { display: flex; flex-wrap: wrap; gap: 0.4rem 0.45rem; list-style: none; margin: 1rem 0 0; padding: 0; }
.tags li { font: 400 0.85rem/1 var(--font-mono); padding: 0.45rem 0.6rem; border: 1px solid var(--color-line); border-radius: 6px; background: rgba(var(--color-shade-rgb), 0.5); color: var(--color-ivory); }
.mark { display: inline-flex; align-items: center; gap: 0.4rem; white-space: nowrap; }
.mark svg { width: 1.05rem; height: 1.05rem; flex: none; }
.mark--yes { color: var(--color-honey); }
.mark--part { color: var(--color-bronze); }
.mark--no, .mark--note { color: var(--color-ivory-2); }

/* tables */
.table { position: relative; overflow-x: auto; margin-top: 1.4rem !important; border: 1px solid var(--color-line); border-radius: 10px; background: rgba(var(--color-shade-rgb), 0.72); text-shadow: none; }
table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
th, td { padding: 0.7rem 0.85rem; text-align: left; border-bottom: 1px solid var(--color-line); vertical-align: top; }
thead th { font: 400 0.95rem/1.2 var(--font-sc); letter-spacing: 0.05em; color: var(--color-ivory-2); }
tbody th { font-weight: 400; color: var(--color-ivory); }
td { color: var(--color-ivory-2); font-variant-numeric: tabular-nums; }
.is-mneme { color: var(--color-honey); }
tr:last-child th, tr:last-child td { border-bottom: 0; }
.wide .panel { width: min(58rem, 100%); padding: clamp(1.25rem, 2.2vw, 2.25rem); border-radius: 14px; background: rgba(var(--color-shade-rgb), 0.86); border: 1px solid var(--color-line); }
.note { font-size: 0.95rem; }

/* ------------------------------------------------------------------ footer */
.ftr { position: relative; z-index: 10; background: var(--color-shade-2); border-top: 1px solid var(--color-line); padding: 3.5rem var(--pad-x) 2.5rem; }
.ftr__grid { display: grid; grid-template-columns: minmax(0, 1.4fr) repeat(2, minmax(0, 1fr)); gap: 2.5rem; }
.ftr h2, .ftr__name { font: 400 1.6rem/1 var(--font-display); margin: 0 0 0.9rem; color: var(--color-ivory); }
.ftr ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.45rem; }
.ftr a { color: var(--color-ivory-2); text-decoration: none; }
.ftr a:hover { color: var(--color-ivory); text-decoration: underline; }
.ftr p { margin: 0 0 0.6rem; color: var(--color-ivory-2); }
.ftr__num { display: inline-block; min-width: 2.2rem; font-family: var(--font-sc); color: var(--color-honey); }
.ftr__facts { font: 400 0.85rem/1.5 var(--font-mono); }
.ftr__credit { margin-top: 2.5rem !important; color: var(--color-ivory) !important; }
.ftr__credit a { color: var(--color-honey); text-decoration: underline; text-underline-offset: 0.2em; }
.ftr__line { font-size: 0.8rem; }
.ftr__line a { text-decoration: underline; }

/* ------------------------------------------------------------------ phones and narrow windows */
@media (max-width: 1180px) {
  .hdr__family { display: none; }
}
@media (max-width: 900px) {
  :root { --pad-x: 1.25rem; }
  body { font-size: 1rem; }
  .hdr { padding: 0.7rem var(--pad-x); }
  .hdr__menu { display: inline-flex; margin-left: auto; align-items: center; gap: 0.4rem; min-height: 2.75rem; padding: 0 0.9rem; border: 1px solid var(--color-line); border-radius: 999px; background: rgba(var(--color-shade-rgb), 0.7); color: var(--color-ivory); font: 400 0.95rem/1 var(--font-text); }
  .hdr__menu svg { width: 1.2rem; height: 1.2rem; }
  .hdr__panel { display: none; position: absolute; inset: 100% 0 auto 0; flex-direction: column; align-items: stretch; gap: 0; padding: 0.6rem var(--pad-x) 1rem; background: var(--color-shade-2); border-bottom: 1px solid var(--color-line); }
  .hdr[data-open="true"] .hdr__panel { display: flex; }
  .hdr__nav, .hdr__family { flex-direction: column; align-items: stretch; gap: 0; }
  .hdr__nav a, .hdr__family a { padding: 0.8rem 0; font-size: 1rem; border-bottom: 1px solid var(--color-line); }
  .hdr__family { display: flex; border-left: 0; padding-left: 0; }
  .ch, .ch--right { align-items: flex-end; justify-content: flex-start; padding: 52svh var(--pad-x) 4.5rem; }
  .ch--hero { padding-top: 46svh; }
  .panel, .wide .panel { width: auto; max-width: none; margin-inline: calc(-1 * var(--pad-x)); padding: 3.25rem var(--pad-x) 1.75rem; border: 0; border-radius: 0;
    background: linear-gradient(180deg, rgba(var(--color-shade-rgb), 0) 0, rgba(var(--color-shade-rgb), 0.86) 3rem, rgba(var(--color-shade-rgb), 0.88) 100%); }
  .ch, .ch--right, .ch--center { display: block; }
  .ch--center { text-align: left; }
  .stage__shade i, .stage__shade::after { display: none; }
  .stage__shade::before, body[data-side] .stage__shade::before { opacity: 1 !important; background: linear-gradient(0deg, rgba(var(--color-shade-rgb), 0.92) 0%, rgba(var(--color-shade-rgb), 0.88) 50%, rgba(var(--color-shade-rgb), 0.6) 58%, rgba(var(--color-shade-rgb), 0.12) 70%, rgba(var(--color-shade-rgb), 0) 78%); }
  .ftr__grid { grid-template-columns: 1fr; }
  .rooms__what { display: none; }
  .rooms a { grid-template-columns: 2.4rem minmax(0, 1fr); }
  .figures dd { font-size: 2.6rem; }
  .roomname { display: none; }
  .pause { top: 4.4rem; bottom: auto; right: var(--pad-x); padding: 0; width: 2.75rem; justify-content: center; }
  .pause span { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
  .ledger li { grid-template-columns: 1fr; gap: 0.2rem; }
  .cmd pre { font-size: 0.82rem; }
  h1 { font-size: 2.6rem; }
  h2 { font-size: 2.1rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: 0.01ms !important; animation: none !important; scroll-behavior: auto !important; }
}
@media (forced-colors: active) {
  .stage { display: none; }
  .btn, .copy, .pause { border: 1px solid ButtonText; }
}