/* Peter Pham portfolio — "Drawing Sheet" (concept 01A). To try the dark blueprint, swap the tokens in :root. */
:root{--paper:#f3f0e8;--tile:#ebe7dc;--ink:#15191e;--mute:#565c62;--line:#15191e26;--blue:#1c47c9;--grid:#1c47c914;--m:30px;
  --cond:"Barlow Condensed","Arial Narrow",sans-serif;--mono:"IBM Plex Mono",ui-monospace,Consolas,monospace;--sans:"IBM Plex Sans",system-ui,"Segoe UI",sans-serif}
*{box-sizing:border-box;margin:0}
html{scroll-behavior:smooth;scroll-padding-top:76px;-webkit-text-size-adjust:100%}
body{background:var(--paper);color:var(--ink);font:400 16px/1.6 var(--sans);padding:var(--m)}
a{color:inherit}
img,video{max-width:100%;height:auto}
:focus-visible{outline:2px solid var(--blue);outline-offset:3px}
.skip{position:absolute;left:-999px;top:0;background:var(--ink);color:var(--paper);padding:10px 14px;z-index:99}
.skip:focus{left:var(--m);top:var(--m)}
.mono{font:500 11.5px/1.45 var(--mono);letter-spacing:.11em;text-transform:uppercase}
.b{color:var(--blue)}.mu{color:var(--mute)}
.gridbg{background-color:var(--tile);background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:20px 20px}
@view-transition{navigation:auto}
::view-transition-old(root),::view-transition-new(root){animation-duration:.35s}

/* fixed drawing frame */
.frame{position:fixed;inset:calc(var(--m) - 8px);border:1.5px solid var(--ink);pointer-events:none;z-index:20}
.zone{position:fixed;z-index:20;display:flex;justify-content:space-around;color:var(--mute);pointer-events:none;font-size:9px}
.zone.t{top:5px;left:var(--m);right:var(--m)}.zone.bt{bottom:5px;left:var(--m);right:var(--m)}
.zone.l,.zone.r{top:var(--m);bottom:var(--m);flex-direction:column;align-items:center;width:calc(var(--m) - 8px)}
.zone.l{left:0}.zone.r{right:0}
.edge{position:fixed;left:0;right:0;height:calc(var(--m) - 8px);background:var(--paper);z-index:19}.edge.t{top:0}.edge.bt{bottom:0}
.x{margin-inline:-8px}

nav.top{position:sticky;top:calc(var(--m) - 8px);z-index:15;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:14px 22px;background:var(--paper);border-bottom:1px solid var(--line);margin:-8px -8px 0}
nav.top ul{display:flex;gap:26px;list-style:none;padding:0}
nav.top a{text-decoration:none;padding:6px 0}nav.top a:hover,nav.top a[aria-current]{color:var(--blue)}

/* home hero */
.hero{display:grid;grid-template-columns:1fr 1.15fr;border-bottom:1.5px solid var(--ink)}
.hero .txt{padding:clamp(28px,5vw,72px) clamp(22px,4vw,56px);display:flex;flex-direction:column;justify-content:space-between;gap:44px}
h1.name{font:600 clamp(72px,11.5vw,184px)/.84 var(--cond);text-transform:uppercase;letter-spacing:-.01em}
h1.name span{display:block;color:var(--blue)}
.lede{max-width:32ch;font-size:clamp(17px,1.5vw,21px)}
.cta{display:flex;gap:10px;flex-wrap:wrap;margin-top:26px}
.btn{text-decoration:none;padding:12px 16px;border:1.5px solid var(--ink);transition:background .2s,color .2s,border-color .2s;display:inline-block;background:none;cursor:pointer;color:inherit}
.btn.p{background:var(--ink);color:var(--paper)}.btn:hover{background:var(--blue);border-color:var(--blue);color:#fff}
.hfig{border-left:1.5px solid var(--ink);position:relative;min-height:min(72vh,640px);overflow:hidden}
.hfig img{position:absolute;left:11%;top:9%;width:76%;height:76%;object-fit:contain;filter:drop-shadow(0 22px 18px #15191e26)}
.dim{position:absolute;color:var(--blue);display:flex;align-items:center;justify-content:center}
.dim.h{left:11%;right:13%;bottom:6.5%;border-top:1px solid var(--blue);padding-top:5px;transform-origin:left;animation:gx 1.2s .3s cubic-bezier(.4,0,.2,1) both}
.dim:before,.dim:after{content:"";position:absolute;background:var(--blue)}
.dim.h:before,.dim.h:after{top:-7px;width:1px;height:13px}.dim.h:before{left:0}.dim.h:after{right:0}
.dim.v{top:9%;bottom:15%;right:5%;border-left:1px solid var(--blue);padding-left:6px;writing-mode:vertical-rl;transform-origin:top;animation:gy 1.2s .5s cubic-bezier(.4,0,.2,1) both}
.dim.v:before,.dim.v:after{left:-7px;height:1px;width:13px}.dim.v:before{top:0}.dim.v:after{bottom:0}
@keyframes gx{from{transform:scaleX(0)}}@keyframes gy{from{transform:scaleY(0)}}@keyframes fd{from{opacity:0}}
.bal{position:absolute;display:flex;align-items:center;animation:fd .6s both}
.bal i{font-style:normal;width:26px;height:26px;border-radius:50%;border:1.5px solid var(--blue);color:var(--blue);display:grid;place-items:center;background:var(--paper);flex:none}
.bal:after{content:"";width:var(--w,60px);height:1px;background:var(--blue)}
.bal.e{flex-direction:row-reverse}
.b1{left:5%;top:30%;--w:9vw;animation-delay:.9s}.b2{right:9%;top:22%;--w:7vw;animation-delay:1.1s}.b3{left:16%;top:74%;--w:6vw;animation-delay:1.3s}
.legend{position:absolute;left:14px;top:12px;color:var(--mute);line-height:1.8}.legend b{color:var(--blue);font-weight:500;margin-right:8px}
.specs{display:grid;grid-template-columns:repeat(4,1fr);border-bottom:1.5px solid var(--ink)}
.specs div{padding:16px 22px;border-right:1px solid var(--line);color:var(--mute)}.specs div:last-child{border:0}
.specs b{display:block;font:500 22px/1.2 var(--cond);letter-spacing:.02em;margin-top:4px;color:var(--ink);text-transform:uppercase}

/* work index */
.bar{display:flex;justify-content:space-between;align-items:end;gap:20px;flex-wrap:wrap;padding:52px 14px 18px}
h2.sec{font:600 clamp(38px,5vw,68px)/.95 var(--cond);text-transform:uppercase}
.tog{display:flex;border:1.5px solid var(--ink)}
.tog button{all:unset;cursor:pointer;padding:9px 14px}.tog button[aria-pressed=true]{background:var(--ink);color:var(--paper)}
.tog button:focus-visible{outline:2px solid var(--blue);outline-offset:2px}
.cards{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line)}
.card{border-right:1px solid var(--line);border-bottom:1px solid var(--line);text-decoration:none;display:block;overflow:hidden}
.card:nth-child(3n){border-right:0}
.card .f{position:relative;overflow:hidden;aspect-ratio:4/3}
.card .f img,.card .f svg{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;padding:8%;transition:transform .7s cubic-bezier(.2,.7,.2,1)}
.card .f img.photo{object-fit:cover;padding:9%}
.card:hover .f img,.card:hover .f svg{transform:scale(1.05)}
.tag{position:absolute;top:12px;right:12px;background:var(--blue);color:#fff;padding:4px 8px;z-index:1}
.card .meta{padding:14px 22px 22px;border-top:1px solid var(--line)}
.card .row{display:flex;justify-content:space-between;gap:10px;color:var(--mute)}
.card h3{font:500 28px/1.05 var(--cond);text-transform:uppercase;margin:8px 0 4px;transition:color .2s}
.card p{font-size:14.5px;color:var(--mute);max-width:40ch}
.card:hover h3{color:var(--blue)}
.bom{display:none;width:100%;border-collapse:collapse;border-top:1.5px solid var(--ink)}
.bom th{text-align:left;padding:8px 14px;color:var(--mute);font-weight:500;border-bottom:1px solid var(--ink)}
.bom td{padding:8px 14px;border-bottom:1px solid var(--line);vertical-align:middle}
.bom tbody tr{transition:background .2s;position:relative}.bom tbody tr:hover{background:var(--tile)}
.bom td.n a{font:500 24px/1.1 var(--cond);text-transform:uppercase;text-decoration:none;letter-spacing:0}
.bom td.n a:after{content:"";position:absolute;inset:0}
.bom tr:hover td.n a{color:var(--blue)}
.bom .th{width:72px}.bom .th img,.bom .th svg{display:block;width:60px;height:45px;object-fit:contain}
[data-view=list] .cards{display:none}[data-view=list] .bom{display:table}

/* about + title block */
.about{display:grid;grid-template-columns:1fr 1.5fr;border-top:1.5px solid var(--ink);border-bottom:1.5px solid var(--ink);margin-top:64px}
.about>div{padding:clamp(24px,4vw,52px) clamp(22px,3vw,44px)}
.about .l{border-right:1px solid var(--line)}
.det{display:flex;gap:18px;align-items:center;margin-bottom:28px}
.det img{width:96px;height:96px;border-radius:50%;object-fit:cover;object-position:50% 18%;border:1.5px solid var(--blue);padding:4px}
.big{font-size:clamp(21px,2.2vw,30px);line-height:1.28;max-width:24ch}
.notes{list-style:none;padding:0;margin-top:12px;counter-reset:n}
.notes li{counter-increment:n;display:grid;grid-template-columns:28px 1fr;padding:8px 0;border-top:1px solid var(--line);font-size:14.5px}
.notes li:before{content:counter(n) ".";color:var(--blue);font:500 12px var(--mono);padding-top:3px}
table.rev{width:100%;border-collapse:collapse;margin-top:14px}
.rev th{text-align:left;padding:7px 10px 7px 0;color:var(--mute);font-weight:500;border-bottom:1px solid var(--ink)}
.rev td{padding:12px 10px 12px 0;border-bottom:1px solid var(--line);vertical-align:top}
.rev td:first-child{color:var(--blue);width:44px}
.rev b{font:500 22px/1.1 var(--cond);text-transform:uppercase;display:block}
.rev td:last-child{white-space:nowrap;color:var(--mute)}
.tb{display:grid;grid-template-columns:2fr 1.3fr 1fr .9fr .7fr;margin-bottom:-8px}
.tb>div{padding:12px 22px 14px;border-right:1px solid var(--line);color:var(--mute)}.tb>div:last-child{border:0}
.tb a,.tb span{display:block;font:500 21px/1.25 var(--cond);margin-top:4px;color:var(--ink);text-transform:none;letter-spacing:0}
.tb a:hover{color:var(--blue)}
.tb .nm{font:600 clamp(30px,3.4vw,46px)/.9 var(--cond);text-transform:uppercase}

/* case study */
.chead{display:grid;grid-template-columns:1.1fr 1fr;border-bottom:1.5px solid var(--ink)}
.chead .txt{padding:clamp(24px,4vw,56px) clamp(22px,4vw,56px);display:flex;flex-direction:column;gap:22px;justify-content:space-between}
.crumb{display:flex;gap:14px;flex-wrap:wrap;color:var(--mute)}.crumb a{text-decoration:none}.crumb a:hover{color:var(--blue)}
h1.title{font:600 clamp(52px,7.6vw,124px)/.88 var(--cond);text-transform:uppercase;letter-spacing:-.005em;overflow-wrap:anywhere}
.sum{font-size:clamp(17px,1.5vw,21px);max-width:36ch}
.chead .hf{border-left:1.5px solid var(--ink);position:relative;min-height:min(62vh,560px);overflow:hidden}
.chead .hf img,.chead .hf svg{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;padding:9%}
.chead .hf img.photo{object-fit:cover;padding:7%}
.chead .hf .cap{position:absolute;left:14px;bottom:10px;color:var(--mute)}
.tblock{display:grid;grid-template-columns:repeat(4,1fr);border-bottom:1.5px solid var(--ink)}
.tblock div{padding:14px 22px;border-right:1px solid var(--line);color:var(--mute)}.tblock div:last-child{border:0}
.tblock b{display:block;font:500 20px/1.2 var(--cond);margin-top:4px;color:var(--ink);text-transform:uppercase;letter-spacing:.01em}
.body{max-width:1240px;margin:0 auto}
.blk{display:grid;grid-template-columns:minmax(150px,1fr) 3.4fr;gap:clamp(16px,3vw,48px);padding:clamp(28px,4vw,52px) 14px;border-bottom:1px solid var(--line)}
.blk>.h{position:sticky;top:84px;align-self:start}
.blk>.h .no{font:600 44px/.9 var(--cond);color:var(--blue)}
.blk>.h h2{font:600 26px/1 var(--cond);text-transform:uppercase;margin-top:6px}
.blk p.t{font-size:clamp(18px,1.6vw,22px);line-height:1.45;max-width:46ch}
.blk ul.t{list-style:none;padding:0;max-width:60ch}
.blk ul.t li{padding:11px 0 11px 28px;border-top:1px solid var(--line);position:relative;font-size:17px}
.blk ul.t li:last-child{border-bottom:1px solid var(--line)}
.blk ul.t li:before{content:"";position:absolute;left:2px;top:21px;width:12px;height:1px;background:var(--blue)}
.figs{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:22px}
.figs.one{grid-template-columns:1fr}
figure.fig{border:1px solid var(--line);display:flex;flex-direction:column}
figure.fig .z{all:unset;cursor:zoom-in;display:block;aspect-ratio:4/3;position:relative;overflow:hidden}
figure.fig .z:focus-visible{outline:2px solid var(--blue);outline-offset:-4px}
figure.fig img{position:absolute;inset:0;width:100%;height:100%;padding:7%;object-fit:scale-down;transition:transform .6s cubic-bezier(.2,.7,.2,1)}
figure.fig .z:hover img{transform:scale(1.04)}
figure.fig figcaption{padding:10px 14px;border-top:1px solid var(--line);color:var(--mute);background:var(--paper)}
figure.fig figcaption b{color:var(--blue);font-weight:500;margin-right:8px}
.vid{position:relative;border:1px solid var(--line);margin-top:22px;aspect-ratio:16/9;background:#dfe6f1;overflow:hidden;max-width:900px}
.vid img,.vid video{position:absolute;inset:0;width:100%;height:100%;object-fit:contain}
.vid .play{all:unset;cursor:pointer;position:absolute;inset:0;display:grid;place-items:center}
.vid .play span{background:var(--blue);color:#fff;padding:12px 18px;transition:transform .25s}
.vid .play:hover span{transform:scale(1.06)}
.vid .play:focus-visible{outline:3px solid var(--blue);outline-offset:-6px}
.vcap{margin-top:8px;color:var(--mute)}
.note{margin-top:20px;padding:12px 14px;border:1px dashed var(--mute);color:var(--mute);max-width:60ch;font-size:14.5px}
.ctx{color:var(--mute);max-width:64ch;font-size:15px;margin-top:18px}
.pn{display:grid;grid-template-columns:1fr 1fr;border-top:1.5px solid var(--ink);margin-top:clamp(40px,6vw,80px)}
.pn a{text-decoration:none;padding:22px;display:block;transition:background .2s}
.pn a:hover{background:var(--tile)}.pn a:hover b{color:var(--blue)}
.pn a+a{border-left:1px solid var(--line);text-align:right}
.pn b{display:block;font:600 clamp(28px,4vw,56px)/1 var(--cond);text-transform:uppercase;margin-top:6px}
dialog.lb{margin:auto;border:1.5px solid var(--ink);padding:0;background:var(--tile);max-width:min(94vw,1500px);max-height:92vh}
dialog.lb::backdrop{background:#15191ecc}
dialog.lb img{display:block;max-width:94vw;max-height:calc(92vh - 46px);padding:3vmin}
dialog.lb form{display:flex;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--line);background:var(--paper);padding:6px 6px 6px 14px}
dialog.lb button{all:unset;cursor:pointer;padding:8px 12px;border:1.5px solid var(--ink)}
dialog.lb button:focus-visible{outline:2px solid var(--blue);outline-offset:2px}

.rv{opacity:0;transform:translateY(18px);transition:opacity .7s,transform .7s cubic-bezier(.2,.7,.2,1)}.rv.in{opacity:1;transform:none}
.no-js .rv{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important}html{scroll-behavior:auto}.rv{opacity:1;transform:none}@view-transition{navigation:none}}
@media(max-width:900px){:root{--m:14px}.zone{display:none}.hero,.about,.chead{grid-template-columns:1fr}.hfig,.chead .hf{border-left:0;border-top:1.5px solid var(--ink);min-height:320px}.about .l{border-right:0;border-bottom:1px solid var(--line)}.cards{grid-template-columns:1fr 1fr}.card:nth-child(3n){border-right:1px solid var(--line)}.card:nth-child(2n){border-right:0}.specs,.tblock{grid-template-columns:1fr 1fr}.specs div:nth-child(2n),.tblock div:nth-child(2n){border-right:0}.specs div:nth-child(-n+2),.tblock div:nth-child(-n+2){border-bottom:1px solid var(--line)}.tb{grid-template-columns:1fr 1fr}.tb>div:first-child{grid-column:1/-1;border-right:0;border-bottom:1px solid var(--line)}.tb>div:nth-child(3){border-right:0}.tb>div:nth-child(-n+3){border-bottom:1px solid var(--line)}.bal,.legend{display:none}nav.top ul{gap:16px}.bom .hide{display:none}.blk{grid-template-columns:1fr}.blk>.h{position:static;display:flex;align-items:baseline;gap:12px}.blk>.h .no{font-size:30px}}
@media(max-width:560px){.cards,.figs{grid-template-columns:1fr}.card{border-right:0!important}.pn{grid-template-columns:1fr}.pn a+a{border-left:0;border-top:1px solid var(--line);text-align:left}nav.top{padding:12px 14px}nav.top ul{gap:12px}h1.name{font-size:23vw}}
@media print{.frame,.zone,.edge,nav.top,.tog,.pn{display:none}body{padding:0}.rv{opacity:1;transform:none}}