/* ============================================================
   gavinmoore — site.css
   Dark technical design system. No build step; this file is the
   single source of styling truth for all pages. Page-specific
   quirks live in a small inline <style> block per page (<30 lines).
   Cache convention: bump ?v= in the <link> on breaking changes.
   ============================================================ */

/* ---------- 1. TOKENS ---------- */
@font-face{
  font-family:'Inter';
  src:url('../fonts/inter-var.woff2') format('woff2');
  font-weight:100 900;font-style:normal;font-display:swap;
}
@font-face{
  font-family:'JetBrains Mono';
  src:url('../fonts/jetbrains-mono-var.woff2') format('woff2');
  font-weight:100 800;font-style:normal;font-display:swap;
}

:root{
  color-scheme:dark;
  /* surfaces */
  --bg0:#0B0F0E;          /* page canvas */
  --bg1:#111615;          /* cards, article column */
  --bg2:#161C1A;          /* elevated: terminal, code, snapshot */
  --bg3:#1B2220;          /* highest: menus, kbd */
  /* lines */
  --line:rgba(232,237,235,.08);
  --line-strong:rgba(232,237,235,.15);
  --line-accent:rgba(52,211,153,.25);
  /* text */
  --text-hi:#E8EDEB;
  --text-mid:#A9B6B0;
  --text-dim:#7E8C86;     /* contrast floor — never dimmer, never <12px */
  --text-reading:#D5DDDA; /* long-form paragraphs */
  /* accent family (sage #25443A heritage → luminous emerald) */
  --accent:#34D399;
  --accent-glow:rgba(52,211,153,.12);
  --accent-deep:#25443A;
  --amber:#E5A158;        /* the physical-world accent */
  --red:#F87171;          /* terminal errors only */
  /* shape + space */
  --r-sm:6px;--r-md:10px;--r-lg:14px;
  --max:1180px;
  --pad:clamp(20px,5vw,64px);
  --section-pad:clamp(72px,9vw,128px);
  /* type */
  --sans:'Inter',ui-sans-serif,system-ui,-apple-system,'Segoe UI',sans-serif;
  --mono:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --fs-hero:clamp(40px,7vw,84px);
  --fs-h2:clamp(30px,4.5vw,52px);
  --fs-h3:clamp(20px,2.5vw,26px);
  --fs-lead:clamp(18px,2vw,22px);
}

/* ---------- 2. BASE ---------- */
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg0);color:var(--text-mid);
  font:400 16px/1.6 var(--sans);
  text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{color:var(--text-hi);font-weight:650;margin:0}
strong{color:var(--text-hi);font-weight:600}
a{color:inherit;text-decoration:none;transition:color .15s ease,border-color .15s ease}
a:hover{color:var(--accent)}
p a,li a:not([class]){color:var(--text-hi);border-bottom:1px solid var(--line-accent)}
p a:hover,li a:not([class]):hover{color:var(--accent);border-bottom-color:var(--accent)}
img{max-width:100%;display:block}
::selection{background:rgba(52,211,153,.25);color:var(--text-hi)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:2px}
[id]{scroll-margin-top:96px}
.skip-link{position:absolute;left:16px;top:-48px;z-index:100;background:var(--bg3);color:var(--text-hi);
  padding:10px 14px;border-radius:var(--r-sm);border:1px solid var(--line-strong);font:500 13px var(--sans)}
.skip-link:focus{top:12px}
@view-transition{navigation:auto}

/* ---------- 3. LAYOUT ---------- */
.wrap{max-width:var(--max);margin:0 auto;padding:0 var(--pad)}
section{padding:var(--section-pad) 0;border-top:1px solid var(--line)}
.section-head{display:grid;grid-template-columns:minmax(150px,.3fr) minmax(0,.7fr);gap:clamp(28px,5vw,72px);margin-bottom:clamp(32px,5vw,52px)}
.section-no{font:500 12px var(--mono);color:var(--text-dim);letter-spacing:.08em}
.section-title{font-size:var(--fs-h2);line-height:1.05;letter-spacing:-.025em;max-width:760px}
.section-intro{max-width:680px;font-size:17px;line-height:1.65;margin:14px 0 0}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}

/* graph-paper texture — hero + feature panels only */
.grid-bg{position:relative}
.grid-bg>*{position:relative;z-index:1}
.grid-bg::after{
  content:"";position:absolute;inset:0;pointer-events:none;z-index:0;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),
                   linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:40px 40px;opacity:.35;
  -webkit-mask-image:radial-gradient(ellipse 90% 70% at 50% 0%,#000 40%,transparent 100%);
          mask-image:radial-gradient(ellipse 90% 70% at 50% 0%,#000 40%,transparent 100%);
}

/* ---------- 4. COMPONENTS ---------- */

/* header / nav */
.site-header{position:sticky;top:0;z-index:40;background:rgba(11,15,14,.82);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav{height:64px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:9px;font:600 15px var(--sans);color:var(--text-hi);letter-spacing:-.01em}
.brand::before{content:"❯";font:600 14px var(--mono);color:var(--accent)}
.nav-links{display:flex;align-items:center;gap:26px;font:500 13px var(--mono);letter-spacing:.02em;color:var(--text-mid)}
.nav-links a:hover{color:var(--accent)}
.nav-cta{border:1px solid var(--line-strong);padding:8px 14px;border-radius:var(--r-sm);
  background:var(--bg1);color:var(--text-hi)!important;font-weight:500}
.nav-cta:hover{border-color:var(--line-accent);color:var(--accent)!important}
/* mobile disclosure menu — zero-JS */
.nav-menu{display:none;position:relative}
.nav-menu summary{list-style:none;cursor:pointer;font:500 13px var(--mono);color:var(--text-hi);
  border:1px solid var(--line-strong);border-radius:var(--r-sm);padding:8px 14px;background:var(--bg1)}
.nav-menu summary::-webkit-details-marker{display:none}
.nav-menu[open] summary{border-color:var(--line-accent);color:var(--accent)}
.nav-menu-panel{position:absolute;right:0;top:calc(100% + 10px);min-width:220px;display:flex;flex-direction:column;
  background:var(--bg3);border:1px solid var(--line-strong);border-radius:var(--r-md);padding:8px;
  box-shadow:0 20px 50px rgba(0,0,0,.5)}
.nav-menu-panel a{padding:11px 12px;border-radius:var(--r-sm);font:500 13px var(--mono);color:var(--text-mid)}
.nav-menu-panel a:hover{background:var(--bg2);color:var(--accent)}

/* labels */
.eyebrow,.section-kicker{font:500 12px var(--mono);text-transform:uppercase;letter-spacing:.08em;color:var(--text-dim)}
.eyebrow.accent,.section-kicker.accent{color:var(--accent)}

/* hero — shared by all pages; aurora is glow source 1 of 3 */
.hero{position:relative;overflow:hidden;padding:clamp(64px,9vw,120px) 0 clamp(44px,6vw,76px)}
.hero::before{content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(ellipse 70% 45% at 50% -10%,rgba(52,211,153,.07),transparent 70%)}
.hero>.wrap{position:relative}
.hero h1{font-size:var(--fs-hero);letter-spacing:-.03em;line-height:.95;margin:18px 0 22px}
.hero-line{font-size:clamp(24px,3.4vw,46px);line-height:1.12;letter-spacing:-.025em;color:var(--text-hi);font-weight:550;margin:0;max-width:820px}
.hero-summary{max-width:680px;font-size:var(--fs-lead);line-height:1.6;margin:26px 0 0}
.hero .cta-row{margin-top:32px}
.hero-status{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:8px}

/* status badge — one of the 3 allowed glow sources */
.badge{display:inline-flex;align-items:center;gap:9px;padding:7px 13px;border-radius:999px;
  font:500 12px var(--mono);letter-spacing:.04em;color:var(--text-hi);
  background:rgba(52,211,153,.08);border:1px solid var(--line-accent)}
.badge-dot{width:7px;height:7px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 8px rgba(52,211,153,.8);animation:pulse 2.4s ease-in-out infinite}

/* buttons */
.cta{display:inline-flex;align-items:center;justify-content:space-between;gap:16px;min-height:46px;
  padding:11px 16px;border:1px solid var(--line-strong);border-radius:var(--r-sm);
  background:var(--bg1);color:var(--text-hi);font:550 14px var(--sans);
  transition:border-color .15s ease,color .15s ease,transform .2s ease,box-shadow .2s ease}
.cta:hover{border-color:var(--line-accent);color:var(--accent);transform:translateY(-1px)}
.cta span{font-family:var(--mono);font-weight:400}
.cta.primary{background:var(--accent);border-color:var(--accent);color:#0B0F0E}
.cta.primary:hover{color:#0B0F0E;box-shadow:0 0 24px var(--accent-glow)}
.cta-row{display:flex;flex-wrap:wrap;gap:12px}

/* cards */
.card{background:var(--bg1);border:1px solid var(--line);border-radius:var(--r-md);padding:26px;
  box-shadow:inset 0 1px 0 rgba(232,237,235,.04);
  transition:border-color .2s ease,transform .2s ease}
a.card{display:block}
.card:hover{border-color:var(--line-strong);transform:translateY(-2px)}
.card h3{font-size:var(--fs-h3);letter-spacing:-.015em;margin:10px 0 12px}
.card p{margin:0;line-height:1.65}
.card .arrow{font-family:var(--mono);color:var(--accent);display:inline-block;transition:transform .2s ease}
.card:hover .arrow{transform:translateX(3px)}

/* bento */
.bento-grid{display:grid;grid-template-columns:repeat(4,1fr);grid-auto-rows:minmax(210px,auto);gap:18px}
.bento-card{display:flex;flex-direction:column;justify-content:space-between;min-height:220px}
.bento-card.large{grid-column:span 2;grid-row:span 2;min-height:460px}
.bento-card.medium{grid-column:span 2}

/* metrics + stats */
.metric{font:600 clamp(34px,4.5vw,56px)/1 var(--mono);letter-spacing:-.03em;color:var(--accent);
  font-variant-numeric:tabular-nums;margin:16px 0}
.metric.amber{color:var(--amber)}
.num{font-variant-numeric:tabular-nums}
.proof-note{font:400 12.5px var(--mono);color:var(--text-dim);margin-top:14px}

/* key-value meta list (identity / snapshot / spec rows) */
.meta-list{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.meta-list li{display:flex;justify-content:space-between;gap:20px;padding:13px 0;border-bottom:1px solid var(--line);font-size:14px}
.meta-list li span:first-child{font:500 11px var(--mono);text-transform:uppercase;letter-spacing:.08em;color:var(--text-dim);padding-top:3px}
.meta-list li strong{text-align:right;color:var(--text-hi);font-weight:550}

/* spec bar (hero meta strip) */
.spec-bar{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;border:1px solid var(--line);
  border-radius:var(--r-md);background:var(--bg1);padding:20px 24px;margin-top:clamp(28px,4vw,44px)}
.spec-bar div span{display:block;font:500 11px var(--mono);text-transform:uppercase;letter-spacing:.08em;color:var(--text-dim);margin-bottom:6px}
.spec-bar div strong{font-size:14px;color:var(--text-hi);font-weight:550;line-height:1.45}

/* evidence rows (proof strip) */
.evidence-list{display:grid;border-top:1px solid var(--line)}
.evidence-row{display:grid;grid-template-columns:44px 1fr;gap:18px;padding:18px 0;border-bottom:1px solid var(--line)}
.evidence-row>span{font:500 12px var(--mono);color:var(--accent);padding-top:3px}
.evidence-row strong{display:block;margin-bottom:4px;font-size:16px}
.evidence-row p{margin:0;font-size:15px;line-height:1.6}

/* terminal */
.terminal{background:var(--bg2);border:1px solid var(--line-strong);border-radius:var(--r-lg);overflow:hidden;
  box-shadow:inset 0 1px 0 rgba(232,237,235,.05),0 24px 60px rgba(0,0,0,.45)}
.terminal-bar{display:flex;align-items:center;gap:8px;padding:12px 16px;border-bottom:1px solid var(--line);background:var(--bg3)}
.t-dot{width:10px;height:10px;border-radius:50%;background:var(--line-strong)}
.terminal-title{margin-left:8px;font:400 12px var(--mono);color:var(--text-dim)}
.terminal-body{margin:0;padding:20px 22px;font:400 13.5px/1.75 var(--mono);color:var(--text-mid);
  white-space:pre-wrap;word-break:break-word}
.terminal-body .t-line{display:block;min-height:1.75em}
.t-cmd{color:var(--text-hi)}
.t-cmd::before{content:"$ ";color:var(--accent)}
.t-stage{color:var(--amber);font-weight:500;font-style:normal}
.t-ok{color:var(--accent)}
.t-err{color:var(--red)}
.t-cursor{display:inline-block;width:8px;height:15px;background:var(--accent);vertical-align:-2px;animation:blink 1.06s step-end infinite}

/* media specimen frames */
.media-frame{margin:0;border:1px solid var(--line-strong);border-radius:var(--r-md);overflow:hidden;background:var(--bg1)}
.media-frame img{width:100%;height:auto;filter:saturate(.85) contrast(1.05) brightness(.95);transition:filter .3s ease}
.media-frame:hover img{filter:none}
.media-frame figcaption{padding:10px 14px;border-top:1px solid var(--line);font:400 12px var(--mono);color:var(--text-dim)}
.media-frame figcaption b{color:var(--amber);font-weight:500}

/* memo / link list */
.memo-list{list-style:none;padding:0;margin:20px 0 0}
.memo-list li{border-top:1px solid var(--line)}
.memo-list li:last-child{border-bottom:1px solid var(--line)}
.memo-list a{display:flex;justify-content:space-between;align-items:baseline;gap:18px;padding:15px 2px;color:var(--text-hi);font-weight:500}
.memo-list a:hover{color:var(--accent)}
.memo-list .tag{font:400 12px var(--mono);color:var(--text-dim);white-space:nowrap}

/* status pill */
.status{display:inline-flex;border:1px solid var(--line-accent);color:var(--accent);border-radius:var(--r-sm);
  padding:4px 8px;font:500 11px var(--mono);text-transform:uppercase;letter-spacing:.08em}
.status.dim{border-color:var(--line-strong);color:var(--text-dim)}

/* loop strip (engagement steps / system loop) */
.loop-strip{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;counter-reset:loop}
.loop-step{position:relative;background:var(--bg1);border:1px solid var(--line);border-radius:var(--r-md);padding:18px}
.loop-step::before{counter-increment:loop;content:"0" counter(loop);font:500 11px var(--mono);color:var(--accent)}
.loop-step h4{font:550 15px var(--sans);margin:8px 0 6px;color:var(--text-hi)}
.loop-step p{margin:0;font-size:13.5px;line-height:1.55;color:var(--text-mid)}

/* feature panel (dark elevated block: how-i-work, honesty, contact) */
.panel{background:var(--bg1);border:1px solid var(--line);border-radius:var(--r-lg);padding:clamp(28px,5vw,56px);
  box-shadow:inset 0 1px 0 rgba(232,237,235,.04)}
.panel-lead{font-size:clamp(20px,2.6vw,30px);line-height:1.3;letter-spacing:-.02em;color:var(--text-hi);font-weight:550;margin:12px 0 0;max-width:880px}

/* contact */
.contact-panel{display:grid;grid-template-columns:1.05fr .75fr;gap:clamp(32px,5vw,64px)}
.contact-panel h2{font-size:clamp(34px,5vw,64px);line-height:1.02;letter-spacing:-.03em}
.contact-panel>div>p{font-size:17px;line-height:1.65;max-width:620px}
.contact-links{display:flex;flex-direction:column}
.contact-links a{display:flex;justify-content:space-between;align-items:baseline;gap:16px;padding:15px 2px;
  border-bottom:1px solid var(--line);font-weight:550;color:var(--text-hi)}
.contact-links a span{font:400 12.5px var(--mono);color:var(--text-dim)}
.contact-links a:hover{color:var(--accent)}

/* diagram (animated SVG architecture) */
.diagram{border:1px solid var(--line);border-radius:var(--r-lg);background:var(--bg1);padding:clamp(16px,3vw,32px)}
.diagram svg{width:100%;height:auto;display:block}
.d-node rect{fill:var(--bg2);stroke:var(--line-strong)}
.d-node.hot rect{stroke:var(--line-accent)}
.d-node text{fill:var(--text-mid);font:500 12px var(--mono)}
.d-node text.t-hi{fill:var(--text-hi)}
.d-edge{fill:none;stroke:var(--line-accent);stroke-width:1.5;stroke-dasharray:4 6}
.d-label{fill:var(--text-dim);font:400 10.5px var(--mono)}
html.anim .diagram.in .d-edge{animation:dashflow 1.4s linear infinite}

/* article / reading layout (field notes) */
.article-shell{display:grid;grid-template-columns:170px minmax(0,660px);gap:clamp(36px,6vw,84px);justify-content:center}
.reading-rail{position:sticky;top:96px;align-self:start;border-left:1px solid var(--line);padding-left:16px;
  display:flex;flex-direction:column;gap:2px}
.reading-rail a{font:400 12px/1.5 var(--mono);color:var(--text-dim);padding:6px 0 6px 12px;margin-left:-17px;border-left:1px solid transparent}
.reading-rail a:hover{color:var(--accent)}
.reading-rail a.active{color:var(--accent);border-left-color:var(--accent)}
.rail-label{font:500 11px var(--mono);text-transform:uppercase;letter-spacing:.08em;color:var(--text-dim);margin-bottom:10px}
.article-col{background:var(--bg1);border:1px solid var(--line);border-radius:var(--r-lg);padding:clamp(24px,4.5vw,56px)}
.article-col>p,.article-col li{color:var(--text-reading);font-size:clamp(17px,1.5vw,18.5px);line-height:1.75}
.article-col>p{margin:0 0 1.5em}
.article-col h2{font-size:clamp(26px,3vw,36px);letter-spacing:-.02em;line-height:1.15;margin:56px 0 18px}
.article-col h3{font-size:22px;letter-spacing:-.015em;margin:40px 0 14px}
.article-col ul,.article-col ol{padding-left:22px;margin:0 0 1.5em}
.article-col li{margin-bottom:.5em}
.callout{background:var(--bg2);border:1px solid var(--line);border-left:2px solid var(--accent);border-radius:var(--r-sm);
  padding:18px 22px;margin:0 0 1.5em}
.callout .callout-label{display:block;font:500 11px var(--mono);text-transform:uppercase;letter-spacing:.08em;color:var(--accent);margin-bottom:8px}
.callout p{margin:0;color:var(--text-reading);font-size:16.5px;line-height:1.7}
.pill-row{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 0}
.pill{font:400 12px var(--mono);color:var(--text-dim);border:1px solid var(--line);border-radius:999px;padding:5px 12px;background:var(--bg1)}
p.disclaimer{font:400 12px/1.6 var(--mono);color:var(--text-dim);border-top:1px solid var(--line);padding-top:16px;margin-top:40px}

/* footer */
footer{padding:34px 0 40px;color:var(--text-dim);font:400 12.5px var(--mono)}
.footer-inner{display:flex;justify-content:space-between;align-items:center;gap:20px;border-top:1px solid var(--line);padding-top:24px;flex-wrap:wrap}
.footer-inner .badge{font-size:11px;padding:5px 11px}
.footer-egg{color:var(--text-dim)}
.footer-egg b{color:var(--accent);font-weight:500}

/* ---------- 5. UTILITIES ---------- */
.mono{font-family:var(--mono)}
.visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* reveal-on-scroll — armed only when JS + motion OK (html.anim) */
html.anim .reveal{opacity:0;transform:translateY(12px);transition:opacity .5s ease,transform .5s ease}
html.anim .reveal.in{opacity:1;transform:none}

/* ---------- 6. MOTION ---------- */
@keyframes blink{50%{opacity:0}}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.45}}
@keyframes dashflow{to{stroke-dashoffset:-20}}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
}

/* ---------- RESPONSIVE ---------- */
@media (max-width:960px){
  .nav{height:58px}
  .nav-links{display:none}
  .nav-menu{display:block}
  .section-head,.contact-panel,.article-shell{grid-template-columns:1fr}
  .grid-2,.grid-3,.grid-4,.bento-grid{grid-template-columns:1fr}
  .bento-card.large,.bento-card.medium{grid-column:span 1;grid-row:span 1}
  .loop-strip{grid-template-columns:1fr 1fr}
  .spec-bar{grid-template-columns:1fr 1fr;gap:20px}
  .reading-rail{position:static;display:none}
}
@media (max-width:560px){
  :root{--pad:18px}
  .cta{width:100%}
  .footer-inner{flex-direction:column;align-items:flex-start}
  .spec-bar{grid-template-columns:1fr}
  .loop-strip{grid-template-columns:1fr}
  .panel{padding:24px 20px}
}