/* Muhammad Saadullah — portfolio. Warm paper + emerald + marigold, arch motif. */
:root{
    --bg:#f5efe3;--bg2:#ece3d0;--card:#fffaf0;--ink:#16211c;--muted:#59655d;--line:#d9cfb9;
    --green:#0e6b4e;--gold:#f0a21a;--clay:#d4572f;--ok:#1f9d6b;--bad:#d4432f;--warn:#e0a010;
    --on-gold:#1b1405;--shadow:5px 5px 0 var(--ink);
    --display:"Fraunces",Georgia,serif;--sans:"Hanken Grotesk",system-ui,-apple-system,"Segoe UI",sans-serif;
    --mono:"IBM Plex Mono",ui-monospace,Menlo,monospace;--urdu:"Noto Nastaliq Urdu","Jameel Noori Nastaleeq",serif;
    --r:18px;--max:1140px
}
[data-theme=dark]{
    --bg:#0d1511;--bg2:#111c17;--card:#15231d;--ink:#efe9da;--muted:#a1ada4;--line:#26382f;
    --green:#46c394;--gold:#f4b73a;--clay:#ff8a5c;--shadow:5px 5px 0 #000a
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:90px}
body{margin:0;background:var(--bg);color:var(--ink);font:400 16px/1.65 var(--sans);overflow-x:hidden;
    background-image:radial-gradient(var(--line) 1px,transparent 1.4px);background-size:26px 26px}
img{max-width:100%;display:block}
h1,h2,h3,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit}
button{font:inherit;color:inherit}
:focus-visible{outline:3px solid var(--gold);outline-offset:3px;border-radius:6px}
.skip{position:absolute;left:12px;top:-60px;background:var(--ink);color:var(--bg);padding:8px 14px;border-radius:8px;z-index:100}
.skip:focus{top:12px}
.wrap{width:min(var(--max),calc(100% - 40px));margin-inline:auto}
.i{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}
.i-lg{width:28px;height:28px}

/* ---------- top bar ---------- */
.topbar{position:fixed;z-index:50;top:14px;left:50%;transform:translateX(-50%);width:min(1060px,calc(100% - 24px));
    display:flex;align-items:center;gap:16px;padding:8px 10px 8px 16px;border:1.5px solid var(--ink);border-radius:999px;
    background:color-mix(in srgb,var(--card) 88%,transparent);backdrop-filter:blur(14px);box-shadow:3px 3px 0 var(--ink)}
.logo{font:700 20px var(--display);text-decoration:none;letter-spacing:-.02em}
.logo i{color:var(--gold);font-style:normal}
.nav{display:flex;gap:4px;margin-inline:auto}
.nav a{padding:7px 13px;border-radius:999px;text-decoration:none;font-size:14px;font-weight:500;color:var(--muted);transition:.2s}
.nav a:hover{color:var(--ink);background:var(--bg2)}
.nav a.active{color:var(--on-gold);background:var(--gold)}
.top-actions{display:flex;align-items:center;gap:8px}
.icon-btn{display:grid;place-items:center;width:38px;height:38px;border:1.5px solid var(--line);border-radius:50%;background:transparent;cursor:pointer;transition:.2s}
.icon-btn:hover{border-color:var(--ink)}
.i-sun{display:none}[data-theme=dark] .i-sun{display:block}[data-theme=dark] .i-moon{display:none}
.menu-btn{display:none}

/* ---------- buttons / chips ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:12px 20px;border:1.5px solid var(--ink);border-radius:999px;
    font-weight:600;font-size:15px;text-decoration:none;cursor:pointer;background:transparent;transition:transform .15s,box-shadow .15s}
.btn:hover{transform:translate(-2px,-2px);box-shadow:3px 3px 0 var(--ink)}
.btn:active{transform:none;box-shadow:none}
.btn:disabled{opacity:.55;cursor:not-allowed;transform:none;box-shadow:none}
.btn-primary{background:var(--ink);color:var(--bg)}
.btn-primary:hover{box-shadow:3px 3px 0 var(--gold)}
.btn-gold{background:var(--gold);color:var(--on-gold)}
.btn-danger{background:transparent;color:var(--bad);border-color:var(--bad)}
.btn-danger:hover{box-shadow:3px 3px 0 var(--bad)}
.btn-sm{padding:8px 14px;font-size:13.5px}
.btn-block{width:100%}
.pills{display:flex;flex-wrap:wrap;gap:7px}
.pills span{padding:4px 11px;border:1px solid var(--line);border-radius:999px;font:500 12px var(--mono);color:var(--muted);background:var(--bg)}

/* ---------- hero ---------- */
.hero{display:grid;grid-template-columns:1.1fr .9fr;gap:50px;align-items:center;min-height:100svh;padding:130px 0 70px}
.tag{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border:1.5px solid var(--ink);border-radius:999px;font:500 12.5px var(--mono);background:var(--card)}
.tag .i{width:15px;height:15px;color:var(--clay)}
h1{font:700 clamp(40px,6vw,76px)/1.04 var(--display);letter-spacing:-.035em;margin:22px 0}
.hl{background:linear-gradient(transparent 62%,var(--gold) 62% 92%,transparent 92%);padding:0 4px}
.lead{max-width:520px;font-size:18px;color:var(--muted)}
.cta{display:flex;flex-wrap:wrap;gap:12px;margin:30px 0 36px}
.facts{display:flex;gap:30px;flex-wrap:wrap}
.facts li{display:grid}
.facts b{font:700 28px var(--display);line-height:1.1}
.facts span{font:12.5px var(--mono);color:var(--muted)}
.hero-art{position:relative;display:grid;place-items:center;padding:24px}
.arch{position:relative;width:min(340px,100%);aspect-ratio:3/4;border:2px solid var(--ink);border-radius:999px 999px 26px 26px;overflow:hidden;background:var(--gold);box-shadow:12px 12px 0 var(--green)}
.arch img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.arch-initials{position:absolute;inset:0;display:grid;place-items:center;font:700 96px var(--display);color:var(--on-gold);opacity:.55}
.chip{position:absolute;display:flex;align-items:center;gap:10px;padding:9px 14px 9px 11px;border:1.5px solid var(--ink);border-radius:14px;background:var(--card);box-shadow:3px 3px 0 var(--ink)}
.chip .i{color:var(--green)}
.chip b{display:block;font-size:14px;line-height:1.2}
.chip small{font:11px var(--mono);color:var(--muted)}
.chip-a{top:36px;right:-4px;animation:bob 5s ease-in-out infinite}
.chip-b{bottom:92px;left:-12px;animation:bob 6s ease-in-out infinite reverse}
.chip-c{bottom:20px;right:12px;animation:bob 5.5s ease-in-out infinite}
@keyframes bob{50%{transform:translateY(-8px)}}

.ticker{overflow:hidden;border-block:1.5px solid var(--ink);background:var(--ink);color:var(--bg);padding:12px 0}
.ticker-track{display:flex;gap:42px;width:max-content;animation:tick 32s linear infinite;font:500 14px var(--mono);text-transform:uppercase;letter-spacing:.08em}
.ticker-track span::after{content:"✦";margin-left:42px;color:var(--gold)}
@keyframes tick{to{transform:translateX(-50%)}}

/* ---------- sections ---------- */
.sec{padding:100px 0 0}
.sec-head{margin-bottom:38px;max-width:760px}
.kicker{font:500 12.5px var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--green);margin-bottom:10px}
h2{font:700 clamp(32px,4.6vw,54px)/1.08 var(--display);letter-spacing:-.03em}
h2 em{font-style:italic;color:var(--clay)}
.sec-note{margin-top:14px;color:var(--muted);max-width:640px}
.card{background:var(--card);border:1.5px solid var(--ink);border-radius:var(--r);padding:26px;transition:transform .2s,box-shadow .2s}
.card:hover{transform:translate(-3px,-3px);box-shadow:var(--shadow)}
.ico{display:grid;place-items:center;width:44px;height:44px;border-radius:12px;background:var(--gold);color:var(--on-gold);border:1.5px solid var(--ink);flex-shrink:0}
small{font:12px var(--mono);color:var(--muted)}

.bento{display:grid;grid-template-columns:repeat(6,1fr);gap:16px}
.b-story{grid-column:span 4;grid-row:span 2;display:grid;gap:16px;align-content:start}
.b-edu,.b-loc{grid-column:span 2}
.b-focus{grid-column:span 6;display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.big{font:500 clamp(21px,2.4vw,28px)/1.4 var(--display)}
.b-story p:not(.big){color:var(--muted)}
.b-edu .i-lg,.b-loc .i-lg{color:var(--green);margin-bottom:12px}
.b-edu h3,.b-loc h3{font:700 20px var(--display);margin:6px 0 4px}
.b-edu p,.b-loc p{font-size:14px;color:var(--muted)}

.skills{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.skill{display:grid;gap:18px}
.skill-top{display:flex;gap:14px;align-items:center}
.skill-top h3{font:700 20px var(--display)}

.feat{display:grid;grid-template-columns:.95fr 1.05fr;gap:0;padding:0;overflow:hidden;margin-bottom:16px}
.feat-img{position:relative;min-height:300px;background:var(--bg2);border-right:1.5px solid var(--ink)}
.feat-img img{width:100%;height:100%;object-fit:contain;}
.feat-img figcaption{position:absolute;left:14px;bottom:14px;padding:5px 10px;border:1.5px solid var(--ink);border-radius:999px;background:var(--gold);color:var(--on-gold);font:500 11px var(--mono)}
.feat-img.noimg{display:grid;place-items:center}.feat-img.noimg::before{content:"Architecture diagram";font:13px var(--mono);color:var(--muted)}
.feat-body{padding:30px;display:grid;gap:14px;align-content:center}
.feat-body h3{font:700 clamp(24px,3vw,32px)/1.15 var(--display)}
.feat-body p:not(.kicker){color:var(--muted)}
.feat-links{display:flex;gap:10px;flex-wrap:wrap;margin-top:4px}
.two{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.proj{display:grid;gap:14px;align-content:start}
.proj h3{font:700 22px var(--display)}
.proj p{color:var(--muted);font-size:15px}
.proj-top{display:flex;align-items:center;justify-content:space-between}
.badge{font:500 11px var(--mono);padding:4px 10px;border:1px solid var(--line);border-radius:999px;color:var(--muted);text-decoration:none;display:inline-flex;gap:5px;align-items:center}
.badge .i{width:13px;height:13px}
.badge-link{color:var(--green);border-color:var(--green)}

/* ---------- Khata request journey ---------- */
.lab-sec{margin-top:100px;padding:90px 0;background:var(--bg2);border-block:1.5px solid var(--ink)}
.lab-sec .sec-head{margin-bottom:34px}
.lab{display:grid;grid-template-columns:360px 1fr;gap:22px;align-items:start}
.khata{position:sticky;top:96px;display:grid;gap:12px;padding:22px}
.khata:hover{transform:none;box-shadow:none}
.khata-top{display:flex;justify-content:space-between;align-items:flex-start;gap:12px}
.khata-top h3{font:700 28px var(--display);line-height:1.1}
.khata-top small{display:block}
.seg{display:inline-flex;border:1.5px solid var(--ink);border-radius:999px;overflow:hidden}
.seg button{border:0;background:transparent;padding:6px 13px;font:600 13px var(--sans);cursor:pointer}
.seg button.on{background:var(--ink);color:var(--bg)}
.k-label{font:500 12.5px var(--mono);color:var(--muted);display:block;margin-top:4px}
.items{display:flex;flex-wrap:wrap;gap:8px}
.items button{padding:8px 14px;border:1.5px solid var(--line);border-radius:999px;background:var(--bg);cursor:pointer;font-weight:500;font-size:14px;transition:.15s}
.items button:hover{border-color:var(--ink)}
.items button[aria-checked=true]{background:var(--gold);border-color:var(--ink);color:var(--on-gold);font-weight:700}
#amount{width:100%;padding:12px 14px;border:1.5px solid var(--ink);border-radius:12px;background:var(--bg);color:var(--ink);font:600 20px var(--mono)}
.status{min-height:22px;font:500 13px var(--mono)}
.status.ok{color:var(--ok)}.status.bad{color:var(--bad)}
.ledger{border-top:1.5px dashed var(--line);padding-top:12px}
.ledger-head{display:flex;justify-content:space-between;font:500 13px var(--mono);color:var(--muted);margin-bottom:8px}
.ledger-head b{color:var(--ink);font-size:16px}
#ledger{display:grid;gap:6px;max-height:190px;overflow:auto}
#ledger li{display:flex;justify-content:space-between;padding:8px 12px;border-radius:10px;background:var(--bg);font-size:14px;animation:pop .4s}
#ledger li b{font-family:var(--mono)}
#ledger .empty{color:var(--muted);justify-content:center;font-size:13px;text-align:center}
@keyframes pop{from{opacity:0;transform:translateY(-6px) scale(.97)}}
.khata[dir=rtl],.khata[dir=rtl] input{font-family:var(--urdu)}
.khata[dir=rtl] .k-label,.khata[dir=rtl] .status,.khata[dir=rtl] small,.khata[dir=rtl] .ledger-head{font-family:var(--urdu);line-height:2;letter-spacing:0}
.khata[dir=rtl] h3{font-family:var(--urdu);line-height:1.6}
.khata[dir=rtl] .items button,.khata[dir=rtl] .btn{font-family:var(--urdu);line-height:1.8}
.khata[dir=rtl] #amount{direction:ltr;text-align:right}

.pipe{display:grid;gap:16px}
.pipe-bar{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
.pipe-title{display:inline-flex;gap:8px;align-items:center;font:600 14px var(--mono)}
.pipe-btns{display:flex;gap:8px}
.flow{position:relative;padding:22px;border:1.5px solid var(--ink);border-radius:var(--r);background:var(--card)}
.nodes{position:relative;display:grid;gap:12px}
.nodes::before{content:"";position:absolute;left:22px;top:20px;bottom:20px;border-left:2px dashed var(--line)}
.node{position:relative;display:flex;gap:14px;align-items:flex-start;padding:10px 12px;border:1.5px solid transparent;border-radius:14px;transition:.25s}
.node b{display:block;font-size:15px;line-height:1.3}
.node small{display:block}
.dotico{display:grid;place-items:center;width:34px;height:34px;border:1.5px solid var(--ink);border-radius:50%;background:var(--bg);flex-shrink:0;z-index:1;transition:.25s}
.dotico .i{width:17px;height:17px}
.node.lit{border-color:var(--ink);background:var(--bg)}
.node.lit .dotico{background:var(--gold);color:var(--on-gold)}
.node.err{border-color:var(--bad)}.node.err .dotico{background:var(--bad);color:#fff}
.node.done .dotico{background:var(--ok);color:#fff}
.packet{position:absolute;left:0;top:0;width:16px;height:16px;margin:-8px 0 0 -8px;border-radius:50%;background:var(--clay);border:2px solid var(--ink);z-index:5;pointer-events:none;box-shadow:0 0 0 6px color-mix(in srgb,var(--clay) 25%,transparent);transition:background .2s}
.packet.ok{background:var(--ok);box-shadow:0 0 0 6px color-mix(in srgb,var(--ok) 25%,transparent)}
.packet.bad{background:var(--bad);box-shadow:0 0 0 6px color-mix(in srgb,var(--bad) 25%,transparent)}
.pool{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:10px}
.inst{display:grid;gap:2px;padding:8px 10px;border:1.5px solid var(--line);border-radius:10px;background:var(--bg);font:500 11.5px var(--mono);transition:.25s;position:relative}
.inst b{display:flex;align-items:center;gap:6px;font-size:12px}
.inst small{font-size:10.5px}
.inst .dot{width:8px;height:8px;border-radius:50%;background:var(--ok)}
.inst.crashed{border-color:var(--bad);background:color-mix(in srgb,var(--bad) 10%,var(--bg))}
.inst.crashed .dot{background:var(--bad)}
.inst.launching{border-color:var(--warn)}
.inst.launching .dot{background:var(--warn);animation:blink .7s infinite}
.inst.hit{border-color:var(--ink);box-shadow:3px 3px 0 var(--gold)}
@keyframes blink{50%{opacity:.25}}
.logbox{border:1.5px solid var(--ink);border-radius:var(--r);background:#101a15;color:#d7e6dc;overflow:hidden}
.logbox-head{display:flex;justify-content:space-between;padding:10px 16px;border-bottom:1px solid #284036;font:500 12px var(--mono)}
.logbox-head small{color:#7f968a}
#log{max-height:210px;overflow:auto;padding:10px 16px;display:grid;gap:5px;font:12.5px/1.5 var(--mono)}
#log li{display:flex;gap:10px}
#log time{color:#e8b442;flex-shrink:0;min-width:58px}
#log .muted{color:#7f968a}
#log .e{color:#ff8f7a}#log .g{color:#6fe0b0}

/* ---------- experience, certs, contact ---------- */
.exp{display:grid;grid-template-columns:200px 1fr;gap:28px}
.exp-date{display:flex;gap:10px;align-items:flex-start;font:500 13px var(--mono);color:var(--green)}
.exp h3{font:700 24px var(--display)}
.exp h3 small{margin-left:8px;font-size:12px}
.company{font:500 13px var(--mono);color:var(--green);margin:3px 0 12px}
.exp p:not(.company){color:var(--muted);margin-bottom:16px}
.certs{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.cert{display:flex;gap:16px}
.cert h3{font:700 19px var(--display);margin:4px 0 6px}
.cert p{color:var(--muted);font-size:14px}
.contact{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;padding:44px;border:1.5px solid var(--ink);border-radius:28px;background:var(--green);color:#fff;box-shadow:8px 8px 0 var(--ink)}
.contact .kicker{color:var(--gold)}
.contact h2 em{color:var(--gold)}
.contact p:last-child{margin-top:14px;color:#ffffffcc}
[data-theme=dark] .contact{background:#16382c}
.contact-links{display:grid;gap:10px}
.contact-links a{display:flex;align-items:center;gap:14px;padding:14px 16px;border:1.5px solid #ffffff55;border-radius:14px;text-decoration:none;background:#ffffff10;transition:.2s}
.contact-links a:hover{background:var(--gold);color:var(--on-gold);border-color:var(--ink)}
.contact-links a:hover small{color:var(--on-gold)}
.contact-links div{flex:1}.contact-links small{display:block;color:#ffffffaa}.contact-links b{font-size:15px}
.contact-links .go{width:18px;height:18px}
.foot{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;padding:60px 0 30px;font:12px var(--mono);color:var(--muted)}
.foot a{color:var(--green);text-decoration:none}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s ease var(--reveal-delay,0ms),transform .7s cubic-bezier(.2,.7,.2,1) var(--reveal-delay,0ms);will-change:opacity,transform}
.reveal.in{opacity:1;transform:none}
.card.reveal.in:hover{transform:translate(-3px,-3px)}
.i{transition:transform .25s ease,color .25s ease}
.btn:hover .i,.badge-link:hover .i,.contact-links a:hover .go{transform:translateX(3px)}
.top-actions .icon-btn:hover .i{transform:rotate(12deg) scale(1.08)}
.skill-top .ico,.proj-top .ico,.cert .ico{transition:transform .3s ease,background .3s ease}
.card:hover .skill-top .ico,.card:hover .proj-top .ico,.card:hover .cert .ico{transform:translateY(-2px) rotate(-4deg)}

/* ---------- responsive ---------- */
@media(max-width:980px){
    .hero{grid-template-columns:1fr;min-height:auto;gap:30px;padding-top:120px}
    .hero-art{order:-1;padding:10px}
    .arch{width:min(280px,80%)}
    .lab{grid-template-columns:1fr}
    .khata{position:static}
    .feat{grid-template-columns:1fr}
    .feat-img{border-right:0;border-bottom:1.5px solid var(--ink);min-height:230px}
    .contact{grid-template-columns:1fr;padding:30px}
}
@media(max-width:820px){
    .menu-btn{display:grid}
    .hide-sm{display:none}
    .nav{position:absolute;top:calc(100% + 10px);left:0;right:0;flex-direction:column;padding:12px;border:1.5px solid var(--ink);border-radius:20px;background:var(--card);box-shadow:4px 4px 0 var(--ink);display:none}
    .nav.open{display:flex}
    .nav a{padding:12px 14px;font-size:16px}
    .top-actions{margin-left:auto}
    .bento{grid-template-columns:1fr}
    .b-story,.b-edu,.b-loc,.b-focus{grid-column:auto;grid-row:auto}
    .skills,.two,.certs{grid-template-columns:1fr}
    .exp{grid-template-columns:1fr;gap:14px}
}
@media(max-width:480px){
    .wrap{width:calc(100% - 28px)}
    .sec{padding-top:76px}
    .card{padding:20px}
    .chip{transform:scale(.88)}
    .chip-a{right:-8px}.chip-b{left:-8px}
    .pool{grid-template-columns:1fr}
    .cta .btn{flex:1}
    .contact{padding:24px;border-radius:22px}
    .foot{flex-direction:column}
}
@media(prefers-reduced-motion:reduce){
    *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
    .reveal{opacity:1;transform:none}
}
.new{font:600 9px var(--mono);font-style:normal;text-transform:uppercase;background:var(--clay);color:#fff;padding:2px 6px;border-radius:999px;margin-left:5px;vertical-align:middle}
.skill{align-content:start}
.pills{align-content:flex-start}