/* =========================================================
   Parvaan Ahluwalia — Engineering Portfolio
   Blueprint design system (original concept: Parvaan)
   ========================================================= */
:root{
  --bg:#0B0E11;
  --panel:#12161B;
  --panel-2:#171C22;
  --line:#4A8FA6;
  --line-soft:rgba(74,143,166,.35);
  --line-dim:#263039;
  --ink:#E7EDF1;
  --ink-dim:#8FA1AC;
  --ink-faint:#5D6E79;
  --accent:#FF5A1F;
  --accent-dim:#B33E14;
  --accent-glow:rgba(255,90,31,.18);
  --mono:'JetBrains Mono',ui-monospace,monospace;
  --grotesk:'Space Grotesk',system-ui,sans-serif;
  --sans:'Inter',system-ui,sans-serif;
  --gutter:clamp(16px,6vw,96px);
  --nav-h:60px;
}

*{margin:0;padding:0;box-sizing:border-box}
html{background:var(--bg);scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{background:var(--bg);color:var(--ink);font-family:var(--sans);line-height:1.6;overflow-x:hidden;-webkit-font-smoothing:antialiased}
img,svg{display:block;max-width:100%}
a{color:inherit}
::selection{background:var(--accent);color:#000}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:12px;top:-60px;z-index:200;background:var(--accent);color:#000;padding:8px 14px;font-family:var(--mono);font-size:12px;text-decoration:none}
.skip:focus{top:12px}

/* ---------- Grid paper backdrop (shared) ---------- */
.gridpaper{
  background-image:
    linear-gradient(var(--line-dim) 1px,transparent 1px),
    linear-gradient(90deg,var(--line-dim) 1px,transparent 1px);
  background-size:48px 48px;
}

/* ---------- Navigation ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;height:var(--nav-h);
  display:flex;align-items:center;justify-content:space-between;
  padding:0 var(--gutter);
  font-family:var(--mono);font-size:11.5px;letter-spacing:.08em;text-transform:uppercase;
  transition:background .3s,border-color .3s;
  border-bottom:1px solid transparent;
}
.nav.is-solid{background:rgba(11,14,17,.86);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom-color:var(--line-dim)}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink)}
.brand-mark{width:28px;height:28px;border:1px solid var(--line);display:grid;place-items:center;position:relative;font-family:var(--grotesk);font-weight:700;font-size:14px;letter-spacing:0;color:var(--ink)}
.brand-mark::after{content:'';position:absolute;right:-4px;bottom:-4px;width:6px;height:6px;background:var(--accent)}
.brand-name{color:var(--ink-dim)}
.brand-name b{color:var(--ink);font-weight:600}
.nav-links{display:flex;gap:28px;list-style:none}
.nav-links a{text-decoration:none;color:var(--ink-dim);transition:color .2s;position:relative;padding:4px 0}
.nav-links a:hover,.nav-links a[aria-current="page"]{color:var(--ink)}
.nav-links a::before{content:'';position:absolute;left:0;bottom:-2px;height:1px;width:0;background:var(--accent);transition:width .25s}
.nav-links a:hover::before{width:100%}
.nav-gh{border:1px solid var(--line-dim);padding:6px 12px !important}
.nav-gh:hover{border-color:var(--accent)}
@media (max-width:760px){
  .nav-links{gap:16px}
  .nav-links .hide-sm{display:none}
  .brand-name{display:none}
}

/* ---------- Hero ---------- */
.hero{position:relative;min-height:100vh;min-height:100svh;display:flex;align-items:center;justify-content:center;overflow:hidden;border-bottom:1px solid var(--line-dim);padding:calc(var(--nav-h) + 40px) 16px 120px}
@media (pointer:fine){ .hero.has-crosshair{cursor:none} .hero.has-crosshair a{cursor:pointer} }
.bp-layer{position:absolute;inset:-10%;will-change:transform;pointer-events:none}
.bp-minor{background-image:linear-gradient(var(--line-dim) 1px,transparent 1px),linear-gradient(90deg,var(--line-dim) 1px,transparent 1px);background-size:48px 48px;opacity:.35}
.bp-major{background-image:linear-gradient(var(--line-soft) 1px,transparent 1px),linear-gradient(90deg,var(--line-soft) 1px,transparent 1px);background-size:240px 240px;opacity:.6}
.hero-glow{position:absolute;width:70vmax;height:70vmax;left:50%;top:50%;transform:translate(-50%,-50%);background:radial-gradient(closest-side,rgba(74,143,166,.10),transparent 70%);pointer-events:none}
.hero-gear{position:absolute;width:min(78vmin,760px);left:50%;top:50%;transform:translate(-50%,-50%);opacity:.22;pointer-events:none}
.hero-gear svg{width:100%;height:auto;overflow:visible}
.dim-line{position:absolute;color:var(--line);font-family:var(--mono);font-size:11px;opacity:.55;letter-spacing:.05em;white-space:nowrap;will-change:transform;pointer-events:none}
.corner{position:absolute;width:26px;height:26px;border-color:var(--line);opacity:.7;pointer-events:none}
.corner.tl{top:calc(var(--nav-h) + 10px);left:26px;border-top:1px solid;border-left:1px solid}
.corner.tr{top:calc(var(--nav-h) + 10px);right:26px;border-top:1px solid;border-right:1px solid}
.corner.bl{bottom:26px;left:26px;border-bottom:1px solid;border-left:1px solid}
.corner.br{bottom:26px;right:26px;border-bottom:1px solid;border-right:1px solid}
.hero-content{position:relative;z-index:5;text-align:center;will-change:transform,opacity;max-width:980px}
.badge{display:inline-flex;align-items:center;gap:10px;border:1px solid var(--accent-dim);background:var(--accent-glow);color:var(--ink);font-family:var(--mono);font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;padding:8px 14px;text-decoration:none;margin-bottom:28px;transition:border-color .2s,transform .2s}
.badge:hover{border-color:var(--accent);transform:translateY(-1px)}
.badge .dot{width:7px;height:7px;background:var(--accent);border-radius:50%;box-shadow:0 0 0 0 var(--accent);animation:ping 2s infinite}
.badge .arrow{color:var(--accent)}
@keyframes ping{0%{box-shadow:0 0 0 0 rgba(255,90,31,.6)}70%{box-shadow:0 0 0 9px rgba(255,90,31,0)}100%{box-shadow:0 0 0 0 rgba(255,90,31,0)}}
.eyebrow{font-family:var(--mono);font-size:12.5px;letter-spacing:.25em;text-transform:uppercase;color:var(--ink-dim);margin-bottom:20px;display:flex;align-items:center;justify-content:center;gap:12px}
.eyebrow::before,.eyebrow::after{content:'';width:36px;height:1px;background:var(--line-dim)}
.hero h1{font-family:var(--grotesk);font-weight:700;font-size:clamp(3.2rem,11vw,8.6rem);line-height:.92;letter-spacing:-.03em}
.hero h1 .word{color:var(--accent);display:inline-block;min-width:1ch}
.hero h1 .caret{display:inline-block;width:.08em;height:.78em;background:var(--accent);margin-left:.04em;vertical-align:-.04em;animation:blink 1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}
.hero-sub{margin:28px auto 0;font-size:clamp(1rem,1.6vw,1.22rem);color:var(--ink-dim);max-width:600px;line-height:1.65}
.hero-sub strong{color:var(--ink);font-weight:500}
.hero-tags{margin-top:32px;display:flex;gap:10px;justify-content:center;flex-wrap:wrap;font-family:var(--mono);font-size:11.5px}
.hero-tags span{border:1px solid var(--line-dim);padding:6px 12px;color:var(--ink-dim);letter-spacing:.03em;background:rgba(11,14,17,.6)}
.hero-ctas{margin-top:36px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:10px;font-family:var(--mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;text-decoration:none;padding:13px 20px;border:1px solid var(--line-dim);color:var(--ink);background:var(--panel);transition:border-color .2s,background .2s,transform .2s}
.btn:hover{border-color:var(--line);transform:translateY(-1px)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#0B0E11;font-weight:600}
.btn.primary:hover{background:#ff7340}
.btn svg{width:14px;height:14px}
.scroll-cue{position:absolute;bottom:34px;left:50%;transform:translateX(-50%);z-index:5;font-family:var(--mono);font-size:10.5px;color:var(--ink-dim);letter-spacing:.2em;text-transform:uppercase;display:flex;flex-direction:column;align-items:center;gap:10px;opacity:.8}
.scroll-cue .track{width:1px;height:34px;background:var(--line-dim);position:relative;overflow:hidden}
.scroll-cue .track::after{content:'';position:absolute;top:0;left:0;width:100%;height:40%;background:var(--accent);animation:scrollpulse 1.6s ease-in-out infinite}
@keyframes scrollpulse{0%{transform:translateY(-100%)}100%{transform:translateY(250%)}}
.readout{position:absolute;bottom:30px;left:var(--gutter);z-index:5;font-family:var(--mono);font-size:10.5px;color:var(--ink-faint);letter-spacing:.08em;line-height:1.7}
.readout .tag{color:var(--line)}
.readout-r{left:auto;right:var(--gutter);text-align:right}
@media (max-width:760px){.readout{display:none}.dim-line{display:none}.corner{display:none}.eyebrow{letter-spacing:.14em;font-size:11px}.eyebrow::before,.eyebrow::after{width:18px}}
.crosshair{position:fixed;width:26px;height:26px;pointer-events:none;z-index:150;transform:translate(-50%,-50%);opacity:0;transition:opacity .2s}
.crosshair.on{opacity:1}
.crosshair::before,.crosshair::after{content:'';position:absolute;background:var(--accent)}
.crosshair::before{left:50%;top:0;width:1px;height:100%;transform:translateX(-50%)}
.crosshair::after{top:50%;left:0;height:1px;width:100%;transform:translateY(-50%)}
.crosshair span{position:absolute;inset:7px;border:1px solid var(--line)}

/* ---------- Section scaffolding ---------- */
.section{position:relative}
.section-label{padding:110px var(--gutter) 36px;font-family:var(--mono);font-size:12px;letter-spacing:.15em;text-transform:uppercase;color:var(--ink-dim);display:flex;align-items:center;gap:16px}
.section-label::after{content:'';flex:1;height:1px;background:var(--line-dim)}
.section-label .num{color:var(--accent)}
.section-title{padding:0 var(--gutter) 48px;font-family:var(--grotesk);font-weight:600;font-size:clamp(1.7rem,3.4vw,2.6rem);line-height:1.2;max-width:960px}
.section-title em{font-style:normal;color:var(--accent)}

/* ---------- Stats band ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);border-bottom:1px solid var(--line-dim)}
.stat{padding:38px var(--gutter) 34px;border-right:1px solid var(--line-dim);position:relative}
.stat:last-child{border-right:0}
.stat .n{font-family:var(--grotesk);font-weight:700;font-size:clamp(2.4rem,5vw,3.8rem);line-height:1;letter-spacing:-.02em}
.stat .n .u{color:var(--accent)}
.stat .l{margin-top:10px;font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-dim)}
.stat::before{content:attr(data-ref);position:absolute;top:12px;right:16px;font-family:var(--mono);font-size:9.5px;color:var(--ink-faint);letter-spacing:.1em}
@media (max-width:860px){.stats{grid-template-columns:1fr 1fr}.stat{padding:28px 20px}.stat:nth-child(2){border-right:0}.stat:nth-child(-n+2){border-bottom:1px solid var(--line-dim)}}

/* ---------- Featured (WRO) ---------- */
.feature{margin:0 var(--gutter);border:1px solid var(--line-dim);background:var(--panel);display:grid;grid-template-columns:1.05fr 1fr;position:relative}
.feature-copy{padding:clamp(28px,4vw,56px);display:flex;flex-direction:column;gap:18px;border-right:1px solid var(--line-dim)}
.kicker{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);display:flex;align-items:center;gap:10px}
.kicker::before{content:'';width:18px;height:1px;background:var(--accent)}
.feature h2{font-family:var(--grotesk);font-size:clamp(2rem,4vw,3.2rem);line-height:1.05;letter-spacing:-.02em}
.feature p{color:var(--ink-dim);font-size:1.02rem;max-width:520px}
.spec-list{list-style:none;border-top:1px solid var(--line-dim);margin-top:6px}
.spec-list li{display:flex;justify-content:space-between;gap:20px;padding:11px 0;border-bottom:1px solid var(--line-dim);font-family:var(--mono);font-size:12px;letter-spacing:.04em}
.spec-list li span:first-child{color:var(--ink-faint);text-transform:uppercase}
.spec-list li span:last-child{color:var(--ink);text-align:right}
.feature-visual{position:relative;min-height:420px;background:var(--panel-2);overflow:hidden}
.feature-visual .gridpaper{position:absolute;inset:0;opacity:.6}
.feature-visual svg{position:absolute;inset:6% 6% 12%;width:88%;height:82%}
.feature .btn{align-self:flex-start;margin-top:6px}
@media (max-width:960px){.feature{grid-template-columns:1fr}.feature-copy{border-right:0;border-bottom:1px solid var(--line-dim)}.feature-visual{min-height:300px}}

/* ---------- Drawing styles (SVG) ---------- */
.dwg .s{stroke:var(--line);stroke-width:1.4;fill:none;vector-effect:non-scaling-stroke}
.dwg .s2{stroke:var(--line);stroke-width:.9;fill:none;opacity:.7;vector-effect:non-scaling-stroke}
.dwg .a{stroke:var(--accent);stroke-width:1.6;fill:none;vector-effect:non-scaling-stroke}
.dwg .af{fill:var(--accent)}
.dwg .lf{fill:var(--line)}
.dwg .g{stroke:var(--line-dim);stroke-width:1;fill:none;vector-effect:non-scaling-stroke}
.dwg .c{stroke:var(--ink-faint);stroke-width:.8;fill:none;stroke-dasharray:3 3;vector-effect:non-scaling-stroke}
.dwg .d{stroke:var(--ink-faint);stroke-width:.8;fill:none;vector-effect:non-scaling-stroke}
.dwg text{font-family:var(--mono);font-size:10px;fill:var(--ink-dim);letter-spacing:.06em}
.dwg text.t-a{fill:var(--accent)}
.dwg text.t-l{fill:var(--line)}
.js .draw .s,.js .draw .a,.js .draw .s2{stroke-dasharray:var(--len,1200);stroke-dashoffset:var(--len,1200);transition:stroke-dashoffset 1.8s cubic-bezier(.6,.1,.2,1)}
.js .draw text,.js .draw .af,.js .draw .lf{opacity:0;transition:opacity .6s .9s}
.js .draw.is-drawn .s,.js .draw.is-drawn .a,.js .draw.is-drawn .s2{stroke-dashoffset:0}
.js .draw.done .s,.js .draw.done .a,.js .draw.done .s2{stroke-dasharray:none;transition:none}
.js .draw.is-drawn text,.js .draw.is-drawn .af,.js .draw.is-drawn .lf{opacity:1}

/* ---------- Project rail ---------- */
.rail-wrap{position:relative;height:calc(var(--cards,5) * 85vh)}
.rail-sticky{position:sticky;top:0;height:100vh;overflow:hidden;display:flex;align-items:center}
.rail-track{display:flex;gap:4vw;padding-left:var(--gutter);padding-right:16vw;will-change:transform}
.card{flex:0 0 auto;width:min(540px,78vw);background:var(--panel);border:1px solid var(--line-dim);display:flex;flex-direction:column;text-decoration:none;color:inherit;transition:border-color .25s,transform .25s;position:relative}
.card:hover{border-color:var(--line);transform:translateY(-4px)}
.card:hover .card-cta{color:var(--accent)}
.card:hover .card-cta .arr{transform:translateX(4px)}
.card-head{padding:18px 24px;border-bottom:1px solid var(--line-dim);display:flex;justify-content:space-between;align-items:baseline;gap:12px;font-family:var(--mono);font-size:11px;color:var(--ink-dim);letter-spacing:.08em;text-transform:uppercase}
.card-head .id{color:var(--accent)}
.card-visual{height:250px;position:relative;background:repeating-linear-gradient(0deg,transparent,transparent 23px,var(--line-dim) 24px),repeating-linear-gradient(90deg,transparent,transparent 23px,var(--line-dim) 24px),var(--panel-2);display:flex;align-items:center;justify-content:center;overflow:hidden;border-bottom:1px solid var(--line-dim)}
.card-visual svg{width:82%;height:82%}
.glyph-label{position:absolute;bottom:10px;right:14px;font-family:var(--mono);font-size:9.5px;color:var(--line);letter-spacing:.1em;opacity:.75}
.status{position:absolute;top:12px;left:14px;font-family:var(--mono);font-size:9.5px;letter-spacing:.12em;text-transform:uppercase;padding:4px 8px;border:1px solid var(--line-dim);background:rgba(11,14,17,.85);color:var(--ink-dim);display:inline-flex;align-items:center;gap:7px}
.status::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--st,var(--line))}
.status.live{--st:var(--accent);color:var(--ink);border-color:var(--accent-dim)}
.status.done{--st:#5BBF8A}
.status.wip{--st:#E3B341}
.card-body{padding:24px;flex:1;display:flex;flex-direction:column}
.card-body h3{font-family:var(--grotesk);font-size:1.45rem;font-weight:600;margin-bottom:10px;line-height:1.25}
.card-body p{font-size:.93rem;line-height:1.65;color:var(--ink-dim);margin-bottom:20px}
.card-foot{margin-top:auto;display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
.chips{display:flex;flex-wrap:wrap;gap:7px;font-family:var(--mono);font-size:10.5px}
.chips span{border:1px solid var(--line-dim);padding:4px 9px;color:var(--line);letter-spacing:.03em}
.card-cta{font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-dim);display:flex;align-items:center;gap:8px;transition:color .2s}
.card-cta .arr{transition:transform .2s;display:inline-block}
.rail-progress{position:absolute;bottom:40px;left:var(--gutter);right:var(--gutter);height:1px;background:var(--line-dim);z-index:6}
.rail-progress-fill{height:100%;width:0;background:var(--accent)}
.rail-counter{position:absolute;bottom:56px;left:var(--gutter);font-family:var(--mono);font-size:11px;color:var(--ink-dim);letter-spacing:.08em;z-index:6}
.rail-counter .accent{color:var(--accent)}
.rail-hint{position:absolute;bottom:56px;right:var(--gutter);font-family:var(--mono);font-size:10.5px;color:var(--ink-faint);letter-spacing:.1em;text-transform:uppercase;z-index:6}
.rail-static .rail-wrap,.reduced .rail-wrap{height:auto}
.rail-static .rail-sticky,.reduced .rail-sticky{position:relative;height:auto;padding:0 0 40px}
.rail-static .rail-track,.reduced .rail-track{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,420px),1fr));padding:0 var(--gutter);gap:24px;transform:none !important}
.rail-static .card,.reduced .card{width:auto}
.rail-static .rail-progress,.rail-static .rail-counter,.rail-static .rail-hint,.reduced .rail-progress,.reduced .rail-counter,.reduced .rail-hint{display:none}
@media (max-width:860px){
  .rail-wrap{height:auto}
  .rail-sticky{position:relative;height:auto;padding:0 0 40px}
  .rail-track{flex-direction:column;padding:0 16px;gap:22px;transform:none !important}
  .card{width:100%}
  .rail-progress,.rail-counter,.rail-hint{display:none}
  .card-visual{height:210px}
}

/* ---------- Toolkit spec sheet ---------- */
.toolkit{margin:0 var(--gutter);display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line-dim)}
.tk{padding:28px 24px;border-right:1px solid var(--line-dim);background:var(--panel)}
.tk:last-child{border-right:0}
.tk h3{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin-bottom:18px;display:flex;justify-content:space-between}
.tk h3 span{color:var(--ink-faint)}
.tk ul{list-style:none}
.tk li{padding:10px 0;border-bottom:1px dashed var(--line-dim);font-family:var(--grotesk);font-size:1.05rem;display:flex;justify-content:space-between;gap:10px}
.tk li:last-child{border-bottom:0}
.tk li small{font-family:var(--mono);font-size:10px;color:var(--ink-faint);letter-spacing:.06em;text-transform:uppercase;align-self:center;text-align:right}
@media (max-width:960px){.toolkit{grid-template-columns:1fr 1fr}.tk:nth-child(2){border-right:0}.tk:nth-child(-n+2){border-bottom:1px solid var(--line-dim)}}
@media (max-width:560px){.toolkit{grid-template-columns:1fr}.tk{border-right:0;border-bottom:1px solid var(--line-dim)}.tk:last-child{border-bottom:0}}

/* ---------- Timeline ---------- */
.timeline{margin:0 var(--gutter);position:relative;padding-left:0;list-style:none;display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line-dim)}
.timeline li{position:relative;padding:34px 24px 10px 0}
.timeline li::before{content:'';position:absolute;top:-6px;left:0;width:11px;height:11px;border:1px solid var(--line);background:var(--bg);transform:rotate(45deg)}
.timeline li.next::before{border-color:var(--accent);background:var(--accent)}
.timeline .when{font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--line)}
.timeline li.next .when{color:var(--accent)}
.timeline h3{font-family:var(--grotesk);font-size:1.2rem;font-weight:600;margin:8px 0 6px}
.timeline p{color:var(--ink-dim);font-size:.92rem}
@media (max-width:860px){.timeline{grid-template-columns:1fr;border-top:0;border-left:1px solid var(--line-dim);margin-left:calc(var(--gutter) + 6px)}.timeline li{padding:0 0 30px 26px}.timeline li::before{top:4px;left:-6px}}

/* ---------- About ---------- */
.about{margin:0 var(--gutter);display:grid;grid-template-columns:1fr 1.4fr;gap:clamp(24px,5vw,80px);align-items:start}
.about-card{border:1px solid var(--line-dim);background:var(--panel);font-family:var(--mono);font-size:12px}
.about-card .row{display:flex;justify-content:space-between;gap:16px;padding:13px 18px;border-bottom:1px solid var(--line-dim)}
.about-card .row:last-child{border-bottom:0}
.about-card .row span:first-child{color:var(--ink-faint);text-transform:uppercase;letter-spacing:.08em}
.about-card .row span:last-child{color:var(--ink);text-align:right}
.about-copy p{font-size:clamp(1.05rem,1.5vw,1.22rem);color:var(--ink-dim);line-height:1.75;margin-bottom:18px}
.about-copy p strong{color:var(--ink);font-weight:500}
@media (max-width:860px){.about{grid-template-columns:1fr}}

/* ---------- Footer ---------- */
.footer{margin-top:120px;padding:110px var(--gutter) 40px;border-top:1px solid var(--line-dim);position:relative;overflow:hidden}
.footer h2{font-family:var(--grotesk);font-weight:700;font-size:clamp(2.2rem,6vw,4.6rem);letter-spacing:-.025em;line-height:1.04;max-width:900px}
.footer h2 .accent{color:var(--accent)}
.footer-ctas{margin-top:40px;display:flex;gap:12px;flex-wrap:wrap}
.footer-meta{margin-top:80px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:16px 24px;font-family:var(--mono);font-size:11px;color:var(--ink-faint);letter-spacing:.06em;text-transform:uppercase;border-top:1px solid var(--line-dim);padding-top:22px}
.footer-meta a{text-decoration:none;color:var(--ink-dim)}
.footer-meta a:hover{color:var(--accent)}

/* ---------- Reveal ---------- */
.js .reveal{opacity:0;transform:translateY(18px);transition:opacity .8s ease,transform .8s ease}
.js .reveal.in{opacity:1;transform:none}

/* =========================================================
   Project pages
   ========================================================= */
.p-hero{padding:calc(var(--nav-h) + 70px) var(--gutter) 50px;position:relative;border-bottom:1px solid var(--line-dim);overflow:hidden}
.p-hero .gridpaper{position:absolute;inset:0;opacity:.28;mask-image:linear-gradient(to bottom,#000 30%,transparent);-webkit-mask-image:linear-gradient(to bottom,#000 30%,transparent);pointer-events:none}
.crumbs{position:relative;font-family:var(--mono);font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-faint);display:flex;gap:10px;flex-wrap:wrap;margin-bottom:30px}
.crumbs a{color:var(--ink-dim);text-decoration:none}
.crumbs a:hover{color:var(--accent)}
.crumbs .id{color:var(--accent)}
.p-hero h1{position:relative;font-family:var(--grotesk);font-weight:700;font-size:clamp(2.4rem,7vw,5.6rem);line-height:.98;letter-spacing:-.03em;max-width:1100px}
.p-hero h1 .accent{color:var(--accent)}
.p-hero .lede{position:relative;margin-top:24px;font-size:clamp(1.05rem,1.7vw,1.3rem);color:var(--ink-dim);max-width:720px;line-height:1.65}
.p-meta{position:relative;margin-top:34px;display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.p-meta .status{position:static}
.p-meta .chips span{background:rgba(11,14,17,.7)}

.sheet{margin:50px var(--gutter) 0;border:1px solid var(--line-dim);background:var(--panel-2);position:relative}
.sheet-canvas{position:relative;aspect-ratio:16/8.4;overflow:hidden}
.sheet-canvas .gridpaper{position:absolute;inset:0;opacity:.55}
.sheet-canvas svg{position:absolute;inset:5% 4% 9%;width:92%;height:86%}
.titleblock{display:grid;grid-template-columns:2fr 1fr 1fr 1fr 1fr;border-top:1px solid var(--line-dim);font-family:var(--mono);font-size:11px}
.titleblock div{padding:12px 16px;border-right:1px solid var(--line-dim);display:flex;flex-direction:column;gap:4px}
.titleblock div:last-child{border-right:0}
.titleblock span{color:var(--ink-faint);font-size:9.5px;letter-spacing:.14em;text-transform:uppercase}
.titleblock b{font-weight:500;color:var(--ink);letter-spacing:.04em}
@media (max-width:860px){.sheet-canvas{aspect-ratio:4/3}.titleblock{grid-template-columns:1fr 1fr}.titleblock div{border-bottom:1px solid var(--line-dim)}.titleblock div:first-child{grid-column:1/-1}}

.p-body{margin:0 var(--gutter);display:grid;grid-template-columns:240px 1fr;gap:clamp(24px,5vw,80px);padding-top:80px}
.p-toc{position:sticky;top:calc(var(--nav-h) + 30px);align-self:start;font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase}
.p-toc ol{list-style:none;border-left:1px solid var(--line-dim)}
.p-toc a{display:block;padding:8px 0 8px 16px;color:var(--ink-faint);text-decoration:none;margin-left:-1px;border-left:1px solid transparent;transition:color .2s,border-color .2s}
.p-toc a:hover,.p-toc a.on{color:var(--ink);border-left-color:var(--accent)}
.p-toc .share{margin-top:30px;display:flex;flex-direction:column;gap:8px}
.p-toc .share button,.p-toc .share a{all:unset;cursor:pointer;font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;color:var(--ink-dim);border:1px solid var(--line-dim);padding:9px 12px;text-align:center;transition:border-color .2s,color .2s}
.p-toc .share button:hover,.p-toc .share a:hover{border-color:var(--accent);color:var(--ink)}
.p-toc .share button:focus-visible,.p-toc .share a:focus-visible{outline:2px solid var(--accent)}
.p-content section{padding-bottom:70px;scroll-margin-top:calc(var(--nav-h) + 30px)}
.p-content h2{font-family:var(--mono);font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-dim);display:flex;align-items:center;gap:14px;margin-bottom:26px}
.p-content h2 .num{color:var(--accent)}
.p-content h2::after{content:'';flex:1;height:1px;background:var(--line-dim)}
.p-content p{font-size:1.08rem;color:var(--ink-dim);line-height:1.8;max-width:760px;margin-bottom:16px}
.p-content p strong{color:var(--ink);font-weight:500}
.steps{list-style:none;counter-reset:s;max-width:820px}
.steps li{counter-increment:s;position:relative;padding:18px 0 18px 64px;border-bottom:1px solid var(--line-dim);font-size:1.04rem;color:var(--ink);line-height:1.6}
.steps li::before{content:counter(s,decimal-leading-zero);position:absolute;left:0;top:18px;font-family:var(--mono);font-size:12px;color:var(--accent);letter-spacing:.08em;border:1px solid var(--line-dim);padding:3px 8px}
.notes{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr));gap:16px;max-width:980px}
.note{border:1px solid var(--line-dim);background:var(--panel);padding:24px;position:relative}
.note::before{content:attr(data-ref);position:absolute;top:14px;right:16px;font-family:var(--mono);font-size:9.5px;color:var(--ink-faint);letter-spacing:.1em}
.note h3{font-family:var(--grotesk);font-size:1.15rem;font-weight:600;margin-bottom:10px;padding-right:40px}
.note p{font-size:.95rem;line-height:1.7;margin:0}
.stack-table{max-width:820px;border:1px solid var(--line-dim);font-family:var(--mono);font-size:12.5px}
.stack-table div{display:grid;grid-template-columns:200px 1fr;border-bottom:1px solid var(--line-dim)}
.stack-table div:last-child{border-bottom:0}
.stack-table span{padding:13px 18px}
.stack-table span:first-child{color:var(--ink-faint);text-transform:uppercase;letter-spacing:.08em;border-right:1px solid var(--line-dim);background:var(--panel)}
.stack-table span:last-child{color:var(--ink)}
@media (max-width:560px){.stack-table div{grid-template-columns:1fr}.stack-table span:first-child{border-right:0;border-bottom:1px dashed var(--line-dim)}}
.callout{max-width:820px;border:1px solid var(--accent-dim);background:var(--accent-glow);padding:22px 24px;display:flex;gap:16px;align-items:flex-start}
.callout .ic{font-family:var(--mono);color:var(--accent);font-size:12px;letter-spacing:.1em;white-space:nowrap;padding-top:3px}
.callout p{margin:0;color:var(--ink)}
@media (max-width:960px){.p-body{grid-template-columns:1fr}.p-toc{position:relative;top:0}.p-toc ol{display:none}.p-toc .share{flex-direction:row;flex-wrap:wrap;margin-top:0}}

.pager{margin:40px var(--gutter) 0;display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--line-dim)}
.pager a{padding:30px 28px;text-decoration:none;display:flex;flex-direction:column;gap:8px;transition:background .2s}
.pager a:hover{background:var(--panel)}
.pager a+a{border-left:1px solid var(--line-dim);text-align:right}
.pager span{font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-faint)}
.pager b{font-family:var(--grotesk);font-size:1.3rem;font-weight:600}
.pager a:hover b{color:var(--accent)}
@media (max-width:560px){.pager{grid-template-columns:1fr}.pager a+a{border-left:0;border-top:1px solid var(--line-dim)}}

.toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%,20px);background:var(--ink);color:var(--bg);font-family:var(--mono);font-size:12px;letter-spacing:.06em;padding:10px 16px;opacity:0;transition:opacity .25s,transform .25s;z-index:300;pointer-events:none}
.toast.show{opacity:1;transform:translate(-50%,0)}

/* 404 */
.nf{min-height:100vh;display:grid;place-items:center;text-align:center;padding:40px 16px}
.nf h1{font-family:var(--grotesk);font-size:clamp(5rem,20vw,12rem);line-height:.9;letter-spacing:-.04em}
.nf h1 span{color:var(--accent)}
.nf p{font-family:var(--mono);color:var(--ink-dim);letter-spacing:.08em;text-transform:uppercase;font-size:12px;margin:18px 0 30px}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
}