/* ============ Asif Rana — portfolio 2026 ============ */
:root{
  --bg:#f7f9fc; --bg2:#ffffff; --ink:#16202b; --muted:#5a6774; --line:#e4e9f0;
  --a1:#2563eb; --a2:#0ea5e9; --chip:#eef3fa; --chip-ink:#2b3b4e;
  --card:#ffffff; --shadow:0 10px 30px rgba(22,32,43,.07);
  --term-bg:#0f1722; --term-ink:#c7d5e4; --nav:rgba(247,249,252,.75);
}
[data-theme="dark"]{
  --bg:#0b1119; --bg2:#0e1620; --ink:#e7edf4; --muted:#93a1b1; --line:#1e2937;
  --a1:#60a5fa; --a2:#38bdf8; --chip:#152130; --chip-ink:#b9c8d9;
  --card:#101a26; --shadow:0 12px 34px rgba(0,0,0,.35);
  --term-bg:#0a121d; --term-ink:#c7d5e4; --nav:rgba(11,17,25,.72);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#0b1119; --bg2:#0e1620; --ink:#e7edf4; --muted:#93a1b1; --line:#1e2937;
    --a1:#60a5fa; --a2:#38bdf8; --chip:#152130; --chip-ink:#b9c8d9;
    --card:#101a26; --shadow:0 12px 34px rgba(0,0,0,.35);
    --term-bg:#0a121d; --nav:rgba(11,17,25,.72);
  }
}
*{box-sizing:border-box;margin:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font:16px/1.65 Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;-webkit-font-smoothing:antialiased}
h1,h2,h3,.brand{font-family:Sora,Inter,sans-serif}
a{color:inherit}
b{font-weight:650}
.wrap{max-width:1080px;margin:0 auto;padding:0 24px}
.grad{background:linear-gradient(92deg,var(--a1),var(--a2));-webkit-background-clip:text;background-clip:text;color:transparent}

/* nav */
#nav{position:fixed;inset:0 0 auto;z-index:50;background:var(--nav);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav-inner{max-width:1080px;margin:0 auto;padding:14px 24px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{font-weight:700;font-size:17px;text-decoration:none}
.brace{color:var(--a1);font-weight:800}
.links{display:flex;align-items:center;gap:22px}
.links a{text-decoration:none;font-size:14.5px;font-weight:550;color:var(--muted);transition:color .15s}
.links a:hover,.links a.active{color:var(--ink)}
.links a.pill{border:1.5px solid var(--a1);color:var(--a1);padding:6px 14px;border-radius:999px;font-weight:650}
.links a.pill:hover{background:var(--a1);color:#fff}
#theme{display:grid;place-items:center;width:34px;height:34px;border-radius:9px;border:1px solid var(--line);background:var(--card);color:var(--ink);cursor:pointer}
#theme .moon{display:none}
[data-theme="dark"] #theme .moon,:root:not([data-theme="light"]) #theme .moon{display:block}
[data-theme="dark"] #theme .sun{display:none}
[data-theme="light"] #theme .sun{display:block}[data-theme="light"] #theme .moon{display:none}
#burger{display:none;background:none;border:0;cursor:pointer;padding:6px}
#burger span{display:block;width:22px;height:2px;background:var(--ink);margin:5px 0;border-radius:2px;transition:.2s}

/* hero */
header{padding:150px 0 40px;position:relative;overflow:hidden}
.hero{display:grid;grid-template-columns:1.12fr .88fr;gap:44px;align-items:center}
.kicker{font-size:13.5px;letter-spacing:.04em;color:var(--muted);font-weight:550}
h1{font-size:clamp(42px,7vw,64px);letter-spacing:-.02em;line-height:1.04;margin:10px 0 6px}
.role{font-size:clamp(19px,2.6vw,24px);font-weight:700;font-family:Sora}
.lede{color:var(--muted);margin-top:16px;max-width:44em}
.lede b{color:var(--ink)}
.cta{display:flex;flex-wrap:wrap;gap:11px;margin-top:26px}
.cta.center{justify-content:center}
.btn{display:inline-block;text-decoration:none;font-weight:650;font-size:14.5px;padding:11px 20px;border-radius:11px;transition:transform .15s,box-shadow .15s,background .15s}
.btn.primary{color:#fff;background:linear-gradient(92deg,var(--a1),var(--a2));box-shadow:0 8px 22px rgba(37,99,235,.30)}
.btn.ghost{border:1.5px solid var(--line);background:var(--card);color:var(--ink)}
.btn:hover{transform:translateY(-2px)}
.btn.lg{padding:14px 26px;font-size:15.5px}

.hero-visual{position:relative}
.blob{position:absolute;inset:-40px -30px;background:radial-gradient(60% 60% at 60% 35%,rgba(37,99,235,.28),transparent 70%),radial-gradient(50% 50% at 30% 75%,rgba(14,165,233,.22),transparent 70%);filter:blur(10px);z-index:0}
.term{position:relative;z-index:1;background:var(--term-bg);border:1px solid rgba(148,180,220,.15);border-radius:14px;box-shadow:var(--shadow);overflow:hidden}
.term-bar{display:flex;align-items:center;gap:7px;padding:11px 14px;border-bottom:1px solid rgba(148,180,220,.12)}
.term-bar i{width:11px;height:11px;border-radius:50%;background:#ff5f57}
.term-bar i:nth-child(2){background:#febc2e}.term-bar i:nth-child(3){background:#28c840}
.term-bar em{margin-left:8px;color:#7d8fa5;font:12px/1 Inter;font-style:normal}
.term pre{padding:18px 18px 20px;color:var(--term-ink);font:13.5px/1.75 "SF Mono",ui-monospace,Menlo,Consolas,monospace;white-space:pre-wrap}
.term .p{color:#7dd3fc;font-weight:600}
.term .o{color:#c7d5e4}
.term .ok{color:#4ade80;font-weight:600}
.cursor{animation:blink 1.1s steps(1) infinite;color:#7dd3fc}
@keyframes blink{50%{opacity:0}}

.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:44px}
.stat{background:var(--card);border:1px solid var(--line);border-left:3px solid var(--a1);border-radius:0 12px 12px 0;padding:14px 16px;box-shadow:var(--shadow)}
.stat b{display:block;font-family:Sora;font-size:22px;color:var(--a1)}
.stat span{font-size:12.8px;color:var(--muted);line-height:1.4;display:block;margin-top:3px}

/* sections */
section{padding:64px 0 8px}
h2{font-size:clamp(24px,3.4vw,30px);letter-spacing:-.01em;margin-bottom:26px}
h2 span{color:var(--a1);font-size:.75em;margin-right:8px;font-weight:700}
h2.solo{margin-bottom:10px}

.about-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:26px}
.about-grid p{color:var(--muted);margin-bottom:14px}
.about-grid p b{color:var(--ink)}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:24px 26px;box-shadow:var(--shadow)}
.how h3{font-size:16px;margin-bottom:12px}
.how ul{list-style:none;padding:0;display:grid;gap:10px}
.how li{font-size:14.2px;color:var(--muted);padding-left:20px;position:relative}
.how li::before{content:"▹";position:absolute;left:0;color:var(--a1)}
.how li b{color:var(--ink)}

/* timeline */
.timeline{border-left:2px solid var(--line);padding-left:28px;display:grid;gap:30px}
.t-item{position:relative}
.t-item::before{content:"";position:absolute;left:-35px;top:6px;width:12px;height:12px;border-radius:50%;background:linear-gradient(92deg,var(--a1),var(--a2));box-shadow:0 0 0 4px var(--bg)}
.t-head{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:6px}
.t-head h3{font-size:17.5px}
.t-head em{font-style:normal;color:var(--a1)}
.dates{color:var(--muted);font-size:13.5px;font-weight:600}
.t-sub{color:var(--muted);font-size:13.8px;margin:2px 0 8px;font-style:italic}
.t-item ul{margin:6px 0 0;padding-left:18px;display:grid;gap:6px}
.t-item li{font-size:14.6px;color:var(--muted)}
.t-item li b{color:var(--ink)}

/* cards grid */
.cards{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.cards .card{transition:transform .18s,box-shadow .18s}
.cards .card:hover{transform:translateY(-4px)}
.metric{font:600 12.5px/1 "SF Mono",ui-monospace,Menlo,monospace;color:var(--a1);background:var(--chip);display:inline-block;padding:6px 10px;border-radius:7px;margin-bottom:12px}
.cards h3{font-size:17px;margin-bottom:8px}
.cards p{font-size:14.4px;color:var(--muted)}
.chips{display:flex;flex-wrap:wrap;gap:7px;margin-top:14px}
.chips i{font-style:normal;font-size:12.3px;font-weight:600;color:var(--chip-ink);background:var(--chip);padding:5px 11px;border-radius:999px}
.chips.lg i{font-size:13px;padding:7px 13px}

/* skills */
.skill-rows{display:grid;gap:16px}
.skill-row{display:grid;grid-template-columns:190px 1fr;gap:14px;align-items:start}
.skill-row>b{font-family:Sora;font-size:14.5px;padding-top:6px}

/* education */
.edu-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.card.slim{padding:18px 20px}
.card.slim b{display:block;font-size:15.2px}
.card.slim span{display:block;color:var(--muted);font-size:13.6px;margin-top:3px}
.card.slim em{display:block;color:var(--a1);font-size:12.8px;font-weight:650;font-style:normal;margin-top:8px}

/* contact */
.contact{text-align:center;padding:46px 30px;margin-top:20px;
  background:linear-gradient(180deg,var(--card),var(--card)) padding-box,
             linear-gradient(120deg,var(--a1),var(--a2)) border-box;
  border:1.5px solid transparent}
.contact p{color:var(--muted);max-width:38em;margin:0 auto 24px}
.contact p b{color:var(--ink)}

footer{margin-top:70px;border-top:1px solid var(--line)}
.foot{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;padding:26px 24px;color:var(--muted);font-size:14px}
.foot-links a{color:var(--a1);text-decoration:none;font-weight:600;margin-left:16px}

/* reveal */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
.d1{transition-delay:.08s}.d2{transition-delay:.16s}.d3{transition-delay:.24s}.d4{transition-delay:.32s}
@media (prefers-reduced-motion: reduce){.reveal{opacity:1;transform:none;transition:none}.cursor{animation:none}}

/* responsive */
@media (max-width: 860px){
  .hero{grid-template-columns:1fr;gap:34px}
  .stats{grid-template-columns:1fr 1fr}
  .about-grid{grid-template-columns:1fr}
  .cards{grid-template-columns:1fr}
  .edu-grid{grid-template-columns:1fr}
  .skill-row{grid-template-columns:1fr;gap:8px}
  header{padding-top:120px}
  #burger{display:block}
  .links{position:fixed;top:60px;right:0;left:0;background:var(--bg2);border-bottom:1px solid var(--line);
    flex-direction:column;align-items:flex-start;padding:18px 24px;gap:16px;display:none}
  .links.open{display:flex}
}

/* platform feature card */
.platform{padding:30px 32px;margin-bottom:22px}
.platform>h3{font-size:22px;margin:2px 0 10px}
.plat-lede{color:var(--muted);font-size:14.8px;max-width:62em}
.plat-lede b{color:var(--ink)}
.apps{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:20px 0 18px}
.app{background:var(--chip);border:1px solid var(--line);border-radius:12px;padding:15px 16px}
.app b{font-family:Sora;font-size:14.8px;display:block}
.app em{font-style:normal;color:var(--a1);font-size:12px;font-weight:650;display:block;margin:2px 0 8px;letter-spacing:.02em}
.app span{font-size:13.1px;color:var(--muted);line-height:1.55;display:block}
.plat-rows{display:grid;gap:10px}
.plat-row{display:grid;grid-template-columns:112px 1fr;gap:12px;align-items:start}
.plat-row>b{font-family:Sora;font-size:13.5px;padding-top:6px}
.mini-title{font-size:15px;color:var(--muted);font-weight:600;margin:4px 0 14px}
.cards.mini{grid-template-columns:repeat(3,1fr)}
.cards.mini .card{padding:18px 20px}
.cards.mini h3{font-size:15.5px}
.cards.mini p{font-size:13.5px}
@media (max-width:860px){
  .apps{grid-template-columns:1fr}
  .plat-row{grid-template-columns:1fr;gap:6px}
  .cards.mini{grid-template-columns:1fr}
  .platform{padding:24px 22px}
}