/* Oxford Harrison: shared site CSS (/assets/site.css)
   Copied verbatim from index.html where noted; new inner-page components are at the bottom. */
/* ---- tokens, reset, base ---- */
:root{
  box-sizing:border-box;
  --ink:#0a0a0b;
  --ink-2:#101013;
  --ink-3:#16161a;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.14);
  --paper:#eae8e2;
  --paper-dim:#a3a19a;
  --paper-faint:#6b6963;
  --accent:#2fe0c8;
  --aux:#f2b45e;
  --aux-dim:rgba(242,180,94,.13);
  --accent-dim:rgba(47,224,200,.12);
  --serif:"Fraunces",Georgia,serif;
  --sans:"Inter",-apple-system,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,monospace;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(72px + env(safe-area-inset-top,0px))}
body{
  background:var(--ink);
  color:var(--paper);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
::selection{background:var(--accent);color:var(--ink)}
a{color:inherit;text-decoration:none}
.wrap{max-width:1180px;margin:0 auto;padding:0 max(32px,env(safe-area-inset-right,0px)) 0 max(32px,env(safe-area-inset-left,0px))}
:root{--glow-edge:radial-gradient(ellipse 55% 64px at 50% 100%,rgba(47,224,200,.085),transparent),radial-gradient(ellipse 85% 120px at 50% 100%,rgba(47,224,200,.03),transparent)}
:root{--hero-gray:31,31,35}
/* ---- background grid ---- */
.grid-bg{
  position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:72px 72px;
  mask-image:radial-gradient(ellipse 90% 70% at 50% 0%,#000 30%,transparent 100%);
  -webkit-mask-image:radial-gradient(ellipse 90% 70% at 50% 0%,#000 30%,transparent 100%);
}
main,header,footer{position:relative;z-index:1}
/* ---- nav, pill bar, menu button ---- */
nav{
  padding-top:env(safe-area-inset-top,0px);position:fixed;top:0;left:0;right:0;z-index:50;
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  background:rgba(10,10,11,.65);
  border-bottom:1px solid var(--line);
}
.logo{font-family:var(--serif);font-size:19px;letter-spacing:-.01em;display:flex;align-items:center;gap:10px}
nav{height:calc(96px + env(safe-area-inset-top,0px));padding:0;border:0;pointer-events:none;background:linear-gradient(180deg,rgba(var(--hero-gray),.9) 0%,rgba(var(--hero-gray),.5) 50%,rgba(var(--hero-gray),0) 100%);-webkit-mask-image:linear-gradient(180deg,#000 0%,#000 30%,transparent 100%);mask-image:linear-gradient(180deg,#000 0%,#000 30%,transparent 100%);opacity:1}
.pill{position:fixed;z-index:60;top:calc(10px + env(safe-area-inset-top,0px));left:0;right:0;height:auto;display:block;border:0;border-radius:0;background:none;backdrop-filter:none;-webkit-backdrop-filter:none;pointer-events:none}
.pill-in{display:flex;align-items:center;justify-content:space-between}
.pill .mb{pointer-events:auto;height:44px;border:1px solid var(--line-2);border-radius:100px;background:rgba(10,10,11,.74);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.pill .logo{pointer-events:auto;display:block;height:44px;line-height:44px;padding:0;white-space:nowrap}
.pill .logo::before{display:none}
.pill .logo em{font-style:normal;color:var(--paper-dim)}
.mb{position:relative;flex:none;width:44px;height:44px;border:0;border-radius:50%;background:none;cursor:pointer;color:var(--paper)}
.mb i{position:absolute;left:14px;right:14px;height:1.5px;background:currentColor;transition:transform .35s,top .35s}
.mb i:first-child{top:18px}.mb i:last-child{top:25px}
body.menu-open .mb i:first-child{top:21.5px;transform:rotate(45deg)}body.menu-open .mb i:last-child{top:21.5px;transform:rotate(-45deg)}
body.menu-open{overflow:hidden}
/* ---- kicker, headings ---- */
.hero-kicker{
  font-family:var(--mono);font-size:12.5px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--accent);margin-bottom:32px;display:flex;align-items:center;gap:14px;
}
.hero-kicker::before{content:"";width:40px;height:1px;background:var(--accent)}
h1{
  font-family:var(--serif);font-weight:300;
  font-size:clamp(44px,7.2vw,96px);
  line-height:1.04;letter-spacing:-.02em;
}
h1 em{font-style:italic;font-weight:400;color:var(--accent)}
h1{color:var(--paper)}
h2{
  font-family:var(--serif);font-weight:300;font-size:clamp(34px,4.6vw,58px);
  letter-spacing:-.015em;line-height:1.1;margin-top:14px;
}
h2 em{font-style:italic;color:var(--paper-dim)}
/* ---- buttons ---- */
.btn{
  font-family:var(--mono);font-size:13px;letter-spacing:.05em;
  padding:14px 28px;border-radius:100px;transition:all .3s;display:inline-flex;align-items:center;gap:10px;
}
.btn-primary{background:none;color:var(--aux);border:1px solid var(--aux);font-weight:400}
.btn-primary:hover{background:var(--aux);color:var(--ink);box-shadow:0 0 28px rgba(242,180,94,.4);transform:translateY(-3px)}
.btn-ghost{border:1px solid var(--line-2)}
.btn-ghost:hover{border-color:var(--paper);transform:translateY(-2px)}
/* ---- project text, tags, notes ---- */
.proj-desc{margin-top:18px;color:var(--paper-dim);max-width:720px;font-size:15.5px;line-height:1.8}
.proj-desc code{
  font-family:var(--mono);font-size:13px;color:var(--accent);
  background:var(--accent-dim);padding:2px 7px;border-radius:6px;
}
.tags{margin-top:24px;display:flex;flex-wrap:wrap;gap:8px}
.tag{
  font-family:var(--mono);font-size:11px;letter-spacing:.04em;color:var(--paper-dim);
  border:1px solid var(--line);padding:5px 12px;border-radius:100px;transition:all .25s;
}
.note{margin-top:10px;font-family:var(--mono);font-size:12px;letter-spacing:.06em;color:var(--paper-faint);line-height:1.7}
/* ---- paper card ---- */
.paper{
  border:1px solid var(--line);border-radius:20px;overflow:hidden;
  background:linear-gradient(135deg,var(--ink-2) 0%,var(--ink) 60%);
  display:grid;grid-template-columns:1fr 320px;
}
@media(max-width:900px){.paper{grid-template-columns:1fr}}
.paper-main{padding:56px}
.paper-badge{
  display:inline-block;font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--accent);border:1px solid rgba(47,224,200,.35);padding:6px 14px;border-radius:100px;margin-bottom:26px;
}
.paper h3{font-family:var(--serif);font-weight:400;font-size:clamp(24px,3vw,34px);letter-spacing:-.01em;line-height:1.2}
.paper p{margin-top:18px;color:var(--paper-dim);font-size:15px;line-height:1.8;max-width:560px}
.paper-side{
  border-left:1px solid var(--line);padding:56px 40px;
  display:flex;flex-direction:column;justify-content:center;gap:22px;
  background:rgba(255,255,255,.015);
}
@media(max-width:900px){.paper-side{border-left:none;border-top:1px solid var(--line)}}
.paper-side .stat .n{font-family:var(--serif);font-size:34px;font-weight:400;color:var(--paper)}
.paper-side .stat .l{font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--paper-faint);margin-top:4px}
.paper-badge.aux{color:var(--aux);border-color:rgba(242,180,94,.4)}
.paper{background:none}
.paper-main,.paper-foot a{position:relative;isolation:isolate;background:rgba(255,255,255,.025)}
.paper-main::after,.paper-foot a::after{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;background-image:var(--glow-edge);background-repeat:no-repeat;opacity:0;transition:opacity .7s}
.paper-main:hover::after,.paper-main:focus-within::after,.paper-foot a:hover::after,.paper-foot a:focus-visible::after{opacity:1}
.paper-main{background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.012))}
/* ---- footer ---- */
footer{padding:140px 0 calc(60px + env(safe-area-inset-bottom,0px));border-top:1px solid var(--line)}
.foot-links{
  margin-top:64px;display:flex;justify-content:center;gap:12px;flex-wrap:wrap;
}
.foot-links a{
  font-family:var(--mono);font-size:12.5px;letter-spacing:.05em;color:var(--paper-dim);
  border:1px solid var(--line);padding:12px 24px;border-radius:100px;transition:all .3s;
}
.foot-links a:hover{color:var(--accent);border-color:var(--accent);transform:translateY(-3px)}
.foot-base{
  margin-top:90px;padding-top:28px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
  font-family:var(--mono);font-size:11.5px;color:var(--paper-faint);letter-spacing:.05em;
}
/* ---- reveal ---- */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .9s cubic-bezier(.2,.6,.2,1),transform .9s cubic-bezier(.2,.6,.2,1)}
.reveal.in{opacity:1;transform:none}
/* ---- focus, misc ---- */
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
*{-webkit-tap-highlight-color:transparent}
/* ---- link cards ---- */
.lnks{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1px;margin-top:36px;background:var(--line-2);border:1px solid var(--line-2);border-radius:16px;overflow:hidden}
.lnks.one{grid-template-columns:1fr;max-width:480px}
.proj .lnks:first-child{margin-top:0}
.lnk{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:22px 24px;background:rgba(10,10,11,.74);transition:background .25s}
.lnk strong{display:block;font-family:var(--serif);font-weight:400;font-size:19px;line-height:1.3;letter-spacing:-.01em}
.lnk em{display:block;margin-top:4px;font-style:normal;font-family:var(--mono);font-size:12px;letter-spacing:.04em;color:var(--paper-faint)}
.lnk .go{flex:none;width:32px;height:32px;display:grid;place-items:center;border:1px solid var(--line-2);border-radius:50%;font-style:normal;color:var(--paper-dim);transition:all .25s}
.lnk:hover .go{background:var(--accent);border-color:var(--accent);color:var(--ink)}
/* ---- menu overlay ---- */
#menu{position:fixed;inset:0;z-index:55;overflow-y:auto;padding:calc(96px + env(safe-area-inset-top,0px)) 0 calc(48px + env(safe-area-inset-bottom,0px));background:rgba(10,10,11,.97);clip-path:inset(0 0 100% 0);visibility:hidden;transition:clip-path .6s cubic-bezier(.7,0,.2,1),visibility 0s .6s}
body.menu-open #menu{clip-path:inset(0);visibility:visible;transition:clip-path .6s cubic-bezier(.7,0,.2,1)}
.msub a{font-family:var(--mono);font-size:12.5px;color:var(--paper-dim)}@media(max-width:760px){.mgrid{grid-template-columns:1fr;gap:36px}}
#menu{background-color:var(--ink);background-image:linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);background-size:72px 72px}
.mwrap{display:grid;grid-template-columns:1fr;row-gap:28px}
.mside small{display:block;font-family:var(--mono);font-size:12.5px;letter-spacing:.08em;color:var(--paper-faint);padding-top:6px}
.mi{border-top:1px solid var(--line-2)}
.mi:last-child{border-bottom:1px solid var(--line-2)}
.m1{display:flex;align-items:baseline;justify-content:space-between;gap:20px;padding:20px 0;font-family:var(--serif);font-weight:300;font-size:clamp(28px,3.6vw,42px);letter-spacing:-.015em;line-height:1.15;transition:color .25s}
.m1 i{font-style:normal;font-family:var(--mono);font-size:16px;color:var(--paper-faint);transition:transform .25s,color .25s}
.m1:hover{color:var(--accent)}.m1:hover i{color:var(--accent);transform:translateX(4px)}
.mrow{display:flex;align-items:center;gap:14px}.mrow .m1{flex:0 1 auto;min-width:0;padding-right:0}
.mrow .marr{margin-left:auto}
.marr{flex:none;font-family:var(--mono);font-size:16px;color:var(--paper-faint);transition:transform .25s,color .25s}
.mrow:has(.m1:hover) .marr,.marr:hover{color:var(--accent);transform:translateX(4px)}
.mtog{flex:none;width:36px;height:36px;display:grid;place-items:center;padding:0;border:1px solid var(--line-2);border-radius:50%;background:none;color:var(--paper-dim);cursor:pointer;transition:color .25s,border-color .25s}
.mtog:hover,.mtog:focus-visible{color:var(--accent);border-color:var(--accent)}
.mtog svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;transition:transform .35s}
.mi.open .mtog svg{transform:rotate(180deg)}
.msub{display:grid;grid-template-rows:0fr;visibility:hidden;transition:grid-template-rows .35s cubic-bezier(.4,0,.2,1),visibility 0s .35s}
.mi.open .msub{grid-template-rows:1fr;visibility:visible;transition:grid-template-rows .35s cubic-bezier(.4,0,.2,1),visibility 0s}
.msub>div{min-height:0;overflow:hidden}
.msub-l{display:flex;flex-wrap:wrap;gap:6px 20px;padding:0 0 22px}
@media(prefers-reduced-motion:reduce){.msub,.mi.open .msub,.mtog svg{transition:none}}
.msub a{font-family:var(--mono);font-size:12.5px;color:var(--paper-dim);transition:color .25s}
.msub a:hover{color:var(--accent)}
#menu{display:flex;flex-direction:column}
#menu>.wrap{width:100%}
.mfwrap{margin:auto auto 0;padding-top:40px;row-gap:0}
.mfoot,.mfoot2{display:flex;flex-wrap:wrap;gap:10px 28px;font-family:var(--mono);font-size:12.5px;color:var(--paper-dim)}
.mfoot a:hover{color:var(--accent)}
.mfoot2{margin-top:14px;gap:0 .6ch}
.mfoot2 a{text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:.14em;transition:color .25s}
.mfoot2 a:hover{color:var(--accent)}
@media(min-width:761px){.mwrap{grid-template-columns:200px minmax(0,1fr);column-gap:56px}.mlist,.mfcol{grid-column:2}}
@media(min-width:1024px){.mwrap{grid-template-columns:minmax(0,35fr) minmax(0,65fr);column-gap:64px}}

/* =====================================================================
   INNER PAGES: new shared components (everything above is copied
   verbatim from index.html)
   ===================================================================== */

/* ---------- menu: active states ---------- */
.m1[aria-current="page"],.mi.parent .m1{color:var(--accent)}
.m1[aria-current="page"] i,.mi.parent .m1 i{color:var(--accent)}
.msub a[aria-current="page"]{color:var(--accent)}

/* ---------- placeholder (one class, easy to find and replace) ---------- */
.placeholder{display:block;border:1px dashed rgba(242,180,94,.55);border-radius:10px;padding:14px 18px;background:var(--aux-dim);font-family:var(--mono);font-size:12.5px;letter-spacing:.04em;line-height:1.6;color:var(--aux)}

/* ---------- page header (hubs, engineering pages, paper, backstory) ---------- */
.page-head{padding:calc(132px + env(safe-area-inset-top,0px)) 0 56px}
.page-head .hero-kicker{margin-bottom:28px}
.page-head h1{font-size:clamp(40px,6vw,72px);text-wrap:balance}
.page-head .proj-desc{margin-top:28px}
.page-head .proj-desc+.proj-desc{margin-top:16px}
.page-head .note{margin-top:14px}
.page-head .lead-in{margin-top:40px;font-family:var(--mono);font-size:12px;letter-spacing:.06em;color:var(--paper-faint);line-height:1.7}

/* ---------- hub link list ---------- */
.hub-links{padding:0 0 120px}
.hub-links .lnks{margin-top:0}

/* ---------- entries (engineering child pages) ---------- */
.entries{position:relative}
.entries::before{content:"";position:absolute;left:0;top:0;bottom:0;width:1px;background:var(--line-2);pointer-events:none}
.entry{position:relative;border-top:1px solid var(--line);padding:64px 0}
.entry::after{content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--accent);opacity:0;pointer-events:none;transition:opacity .4s}
.entry>.wrap{display:grid;grid-template-columns:200px minmax(0,1fr);gap:56px}
@media(max-width:760px){.entry>.wrap{grid-template-columns:1fr;gap:24px}}
.entry-side{padding-top:8px}
.entry-idx{display:block;font-family:var(--mono);font-size:12.5px;letter-spacing:.08em;color:var(--accent)}
.entry-kind{display:block;margin-top:6px;font-family:var(--mono);font-size:12.5px;letter-spacing:.08em;color:var(--paper-faint)}
.entry h3{font-family:var(--serif);font-weight:400;font-size:clamp(26px,3.2vw,38px);letter-spacing:-.01em;line-height:1.15}
.entry .paper-badge{margin:18px 0 0}
.entry .proj-desc+.proj-desc{margin-top:16px}
.entry-row{margin-top:24px}
.entry-row .tags{margin-top:0}
.row-label{display:block;margin-bottom:10px;font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--paper-faint)}
a.tag:hover,a.tag:focus-visible{color:var(--accent);border-color:var(--accent)}

/* code blocks inside entries: bordered box, language bar on top, scrolls horizontally */
.codeblock{margin-top:24px;max-width:720px;border:1px solid var(--line-2);border-radius:12px;overflow:hidden;background:var(--ink-2)}
.codeblock .cb-bar{padding:10px 16px;border-bottom:1px solid var(--line);font-family:var(--mono);font-size:11.5px;letter-spacing:.06em;color:var(--paper-faint)}
.codeblock pre{padding:16px 20px;overflow-x:auto;font-family:var(--mono);font-size:13px;line-height:1.7;color:var(--paper-dim)}

/* entry motion: JS adds .ent on entries, so with no JS everything stays fully visible */
.ent{opacity:.35;transform:translateY(28px);transition:opacity .4s ease,transform .9s cubic-bezier(.2,.6,.2,1)}
.ent.in{opacity:.38;transform:none}
.ent.in.is-active{opacity:1}
.ent.in.is-active::after{opacity:1}

/* ---------- back link (child pages): built once by site.js from data-parent-* ---------- */
.back{padding:64px 0 96px}
.back .lnks{margin-top:0}
.back .lnks.one{max-width:360px}
.lnk.backlink{justify-content:flex-start}
.lnk.backlink em{margin:0 0 4px}

/* ---------- paper viewer ---------- */
.paper-sec{padding:0}
.paper-byline{margin-top:14px;font-family:var(--mono);font-size:12.5px;letter-spacing:.04em;color:var(--paper-dim)}
.paper-main h3{margin-top:28px}
.paper-actions{margin-top:32px;display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.paper-actions .placeholder{display:inline-block;padding:8px 14px}
.btn[aria-disabled="true"]{opacity:.45;cursor:not-allowed}
.btn-primary[aria-disabled="true"]:hover{background:none;color:var(--aux);box-shadow:none;transform:none}
.paper-side .stat .n .placeholder{display:inline-block;padding:6px 12px;font-family:var(--mono);font-size:12px}

/* ---------- long-form prose (backstory) ---------- */
.page-body{padding:0 0 120px}
.prose{max-width:720px;font-size:17px;line-height:1.8;color:var(--paper-dim)}
.prose>*+*{margin-top:1.4em}
.prose h2{margin-top:2.4em;font-family:var(--serif);font-weight:300;font-size:clamp(28px,3.6vw,38px);letter-spacing:-.015em;line-height:1.15;color:var(--paper)}
.prose h3{margin-top:2em;font-family:var(--serif);font-weight:400;font-size:clamp(22px,2.6vw,28px);letter-spacing:-.01em;line-height:1.2;color:var(--paper)}
.prose h2+*,.prose h3+*{margin-top:.9em}
.prose strong{color:var(--paper);font-weight:600}
.prose a{color:var(--paper);text-decoration:underline;text-decoration-color:var(--line-2);text-decoration-thickness:1px;text-underline-offset:.16em;transition:color .25s,text-decoration-color .25s}
.prose a:hover{color:var(--accent);text-decoration-color:var(--accent)}
.prose ul,.prose ol{padding-left:1.4em}
.prose li+li{margin-top:.5em}
.prose li::marker{color:var(--paper-faint)}
.prose blockquote{padding-left:1.2em;border-left:2px solid var(--accent);font-family:var(--serif);font-style:italic;font-size:1.08em;color:var(--paper)}
.prose code{font-family:var(--mono);font-size:.8em;color:var(--accent);background:var(--accent-dim);padding:2px 7px;border-radius:6px}
.prose pre{padding:16px 20px;overflow-x:auto;border:1px solid var(--line-2);border-radius:12px;background:var(--ink-2);font-family:var(--mono);font-size:13px;line-height:1.7;color:var(--paper-dim)}
.prose pre code{padding:0;background:none;border-radius:0;font-size:inherit;color:inherit}
.prose figure{margin-top:2em}
.prose img{display:block;max-width:100%;height:auto;border:1px solid var(--line);border-radius:12px}
.prose figcaption{margin-top:12px;font-family:var(--mono);font-size:12px;letter-spacing:.04em;line-height:1.7;color:var(--paper-faint)}
.prose hr{border:0;border-top:1px solid var(--line-2);margin-top:2.4em}

/* ---------- footer (compact, inner pages) ---------- */
footer.compact{padding:72px 0 calc(48px + env(safe-area-inset-bottom,0px))}
footer.compact .foot-links{margin-top:0;justify-content:flex-start}
footer.compact .foot-base{margin-top:48px}
.foot-base a{transition:color .25s}
.foot-base a:hover{color:var(--accent)}

/* ---------- reduced motion: no transforms, no transitions, content fully visible ---------- */
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none!important;animation:none!important}
  .reveal{opacity:1;transform:none}
  .ent,.ent.in{transform:none}
  .btn-primary:hover,.btn-ghost:hover,.foot-links a:hover,.m1:hover i,.marr:hover,.mrow:has(.m1:hover) .marr{transform:none}
}