/* ===========================================================
   Saquib Ahmed — personal site
   Built on the Rapid Loop AI brand design system
   =========================================================== */
:root{
  --bg:#070b1a;
  --bg-2:#0b1124;
  --panel:#0f1730;
  --panel-2:#121b38;
  --line:rgba(255,255,255,.09);
  --line-2:rgba(255,255,255,.14);
  --ink:#eef2ff;
  --muted:#9aa6c9;
  --muted-2:#6f7ba3;
  --cyan:#3de0ff;
  --blue:#5ea0ff;
  --violet:#9a6bff;
  --grad:linear-gradient(135deg,#3de0ff 0%,#5ea0ff 45%,#9a6bff 100%);
  --grad-soft:linear-gradient(135deg,rgba(61,224,255,.16),rgba(154,107,255,.16));
  --shadow:0 24px 60px -24px rgba(4,10,30,.85);
  --radius:18px;
  --maxw:1120px;
  --font:'Inter',system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
  --display:'Space Grotesk','Inter',system-ui,sans-serif;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  background:var(--bg);
  color:var(--ink);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
h1,h2,h3{font-family:var(--display);font-weight:700;line-height:1.08;letter-spacing:-.02em;margin:0}
p{margin:0}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

.eyebrow{
  display:inline-block;font-family:var(--display);font-weight:600;font-size:.78rem;
  letter-spacing:.18em;text-transform:uppercase;color:var(--cyan);margin-bottom:18px;
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5em;
  padding:.85rem 1.5rem;border-radius:999px;font-weight:600;font-size:.98rem;
  cursor:pointer;border:1px solid transparent;
  transition:transform .18s ease,box-shadow .25s ease,background .25s ease;
  font-family:var(--display);
}
.btn--primary{background:var(--grad);color:#05122a;box-shadow:0 12px 30px -10px rgba(94,160,255,.6)}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 18px 40px -10px rgba(94,160,255,.75)}
.btn--ghost{background:rgba(255,255,255,.04);color:var(--ink);border-color:var(--line-2)}
.btn--ghost:hover{background:rgba(255,255,255,.09);transform:translateY(-2px)}

/* ---------- Nav ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:50;
  transition:background .3s ease,border-color .3s ease,backdrop-filter .3s ease;
  border-bottom:1px solid transparent;
}
.nav.is-stuck{background:rgba(7,11,26,.78);backdrop-filter:blur(14px);border-bottom-color:var(--line)}
.nav__inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:.7rem}
.monogram{
  display:grid;place-items:center;width:42px;height:42px;border-radius:13px;flex:none;
  font-family:var(--display);font-weight:700;font-size:1.02rem;letter-spacing:.02em;color:#05122a;
  background:var(--grad);box-shadow:0 8px 22px -8px rgba(94,160,255,.7);
}
.brand__text{display:flex;flex-direction:column;line-height:1.12}
.brand__name{font-family:var(--display);font-weight:700;font-size:1.12rem;letter-spacing:-.01em}
.brand__role{
  font-family:var(--display);font-weight:600;font-size:.6rem;letter-spacing:.2em;text-transform:uppercase;
  margin-top:2px;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.nav__links{display:flex;align-items:center;gap:1.9rem}
.nav__links a{font-size:.95rem;color:var(--muted);font-weight:500;transition:color .2s}
.nav__links a:hover{color:var(--ink)}
.nav__cta{padding:.55rem 1.15rem;border-radius:999px;background:var(--grad-soft);border:1px solid var(--line-2);color:var(--ink)!important}
.nav__cta:hover{border-color:var(--cyan)}
.nav__toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.nav__toggle span{width:24px;height:2px;background:var(--ink);border-radius:2px;transition:.25s}

/* ---------- Hero ---------- */
.hero{position:relative;padding:150px 0 86px;overflow:hidden}
.hero__bg{position:absolute;inset:0;z-index:0}
.orb{position:absolute;border-radius:50%;filter:blur(80px);opacity:.55}
.orb--1{width:520px;height:520px;background:radial-gradient(circle,#1b69ff,transparent 70%);top:-160px;right:-120px}
.orb--2{width:460px;height:460px;background:radial-gradient(circle,#7b3bff,transparent 70%);bottom:-180px;left:-120px;opacity:.42}
.grid-glow{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:54px 54px;
  -webkit-mask-image:radial-gradient(ellipse 80% 60% at 50% 30%,#000 40%,transparent 80%);
          mask-image:radial-gradient(ellipse 80% 60% at 50% 30%,#000 40%,transparent 80%);
}
.hero__inner{position:relative;z-index:1;display:grid;grid-template-columns:1.08fr .92fr;gap:48px;align-items:center}
.hero h1{font-size:clamp(2.7rem,6vw,4.4rem);margin-top:4px}
.hero__tagline{display:block;margin-top:.2em;font-size:.34em;font-weight:600;letter-spacing:-.01em;color:var(--muted);line-height:1.4}
.hero__sub{margin-top:22px;font-size:clamp(1.02rem,1.5vw,1.18rem);color:var(--muted);max-width:34rem}
.hero__sub strong{color:var(--ink);font-weight:600}
.hero__chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.tag{
  font-family:var(--display);font-weight:600;font-size:.82rem;padding:.45rem .85rem;border-radius:999px;
  background:rgba(255,255,255,.05);border:1px solid var(--line-2);color:var(--ink);
}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}

/* hero portrait */
.hero__art{position:relative;display:grid;place-items:center;min-height:380px}
.portrait{position:relative;width:min(300px,78%);aspect-ratio:1;display:grid;place-items:center}
.portrait__ring{
  position:absolute;inset:0;border-radius:50%;padding:5px;
  background:var(--grad);
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;
  filter:drop-shadow(0 0 22px rgba(94,160,255,.4));
  animation:spin 14s linear infinite;
}
.portrait__ring2{
  position:absolute;inset:-16px;border-radius:50%;border:1px dashed rgba(255,255,255,.14);
  animation:spin 26s linear infinite reverse;
}
.portrait__img{
  width:78%;aspect-ratio:1;border-radius:50%;object-fit:cover;
  border:1px solid var(--line-2);box-shadow:var(--shadow);
  image-rendering:auto;
}
.portrait__glow{position:absolute;inset:8%;border-radius:50%;background:var(--grad-soft);filter:blur(28px);z-index:-1}
@keyframes spin{to{transform:rotate(360deg)}}
.art-tag{
  position:absolute;font-family:var(--display);font-weight:600;font-size:.82rem;
  padding:.5rem .9rem;border-radius:999px;background:rgba(15,23,48,.92);
  border:1px solid var(--line-2);box-shadow:var(--shadow);white-space:nowrap;
  animation:float 6s ease-in-out infinite;
}
.art-tag span{color:var(--cyan)}
.art-tag--a{top:4%;left:-6%}
.art-tag--b{bottom:16%;right:-8%;animation-delay:-2s}
.art-tag--c{bottom:-1%;left:16%;animation-delay:-4s}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}

/* ---------- Stats ---------- */
.stats{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg-2)}
.stats__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;padding:42px 24px}
.stat{text-align:center;padding:8px}
.stat__num{display:block;font-family:var(--display);font-weight:700;font-size:clamp(2rem,3.5vw,2.8rem);background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat__label{display:block;color:var(--muted);font-size:.9rem;margin-top:4px}

/* ---------- Sections ---------- */
.section{padding:92px 0}
.section--alt{background:var(--bg-2)}
.section__head{max-width:46rem;margin:0 auto 52px;text-align:center}
.section__head h2{font-size:clamp(1.9rem,3.6vw,2.7rem)}
.lead{color:var(--muted);font-size:1.08rem;margin-top:16px;text-align:center}

/* ---------- About ---------- */
.about{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.about__lead{font-size:1.18rem;color:var(--ink);line-height:1.7}
.about__lead b{color:var(--cyan);font-weight:600}
.about p+p{margin-top:16px;color:var(--muted)}
.about__focus{
  background:linear-gradient(180deg,var(--panel),var(--panel-2));
  border:1px solid var(--line);border-radius:var(--radius);padding:28px;
}
.about__focus h3{font-size:1.05rem;margin-bottom:16px}
.about__focus ul{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.about__focus li{position:relative;padding-left:26px;color:var(--muted);font-size:.97rem}
.about__focus li::before{content:"";position:absolute;left:0;top:.55em;width:9px;height:9px;border-radius:50%;background:var(--grad)}
.about__focus li b{color:var(--ink);font-weight:600}

/* ---------- Expertise cards ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{
  background:linear-gradient(180deg,var(--panel),var(--panel-2));
  border:1px solid var(--line);border-radius:var(--radius);padding:28px;
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.card:hover{transform:translateY(-5px);border-color:var(--line-2);box-shadow:var(--shadow)}
.card__ico{width:50px;height:50px;border-radius:13px;display:grid;place-items:center;font-size:1.5rem;background:var(--grad-soft);border:1px solid var(--line-2);margin-bottom:18px}
.card h3{font-size:1.14rem;margin-bottom:10px}
.card p{color:var(--muted);font-size:.95rem}

/* ---------- Experience timeline ---------- */
.timeline{max-width:880px;margin:0 auto;position:relative}
.tl-co{margin-bottom:26px}
.tl-co__head{display:flex;align-items:center;gap:14px;margin-bottom:6px}
.tl-co__logo{
  width:46px;height:46px;border-radius:12px;flex:none;display:grid;place-items:center;
  font-family:var(--display);font-weight:700;font-size:1.05rem;color:#05122a;background:var(--grad);
}
.tl-co__name{font-family:var(--display);font-weight:700;font-size:1.22rem}
.tl-co__meta{color:var(--muted-2);font-size:.88rem;margin-top:1px}
.tl-list{list-style:none;margin:0;padding:0 0 0 22px;border-left:1px solid var(--line-2);margin-left:22px}
.tl-item{position:relative;padding:14px 0 14px 22px}
.tl-item::before{
  content:"";position:absolute;left:-30px;top:20px;width:13px;height:13px;border-radius:50%;
  background:var(--bg-2);border:3px solid var(--cyan);box-shadow:0 0 0 4px rgba(61,224,255,.12);
}
.tl-item__top{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:8px}
.tl-item__role{font-family:var(--display);font-weight:600;font-size:1.05rem;color:var(--ink)}
.tl-item__date{font-size:.82rem;color:var(--cyan);font-weight:600;white-space:nowrap}
.tl-item__loc{color:var(--muted-2);font-size:.85rem;margin-top:2px}
.tl-item__desc{color:var(--muted);font-size:.94rem;margin-top:8px}

/* ---------- Two-col panels (education / honors) ---------- */
.duo{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.panel{
  background:linear-gradient(180deg,var(--panel),var(--panel-2));
  border:1px solid var(--line);border-radius:var(--radius);padding:30px;
}
.panel__title{display:flex;align-items:center;gap:.6rem;font-size:1.2rem;margin-bottom:20px}
.panel__title .ico{font-size:1.3rem}
.entry{padding:14px 0;border-top:1px solid var(--line)}
.entry:first-of-type{border-top:0;padding-top:0}
.entry h4{font-family:var(--display);font-weight:600;font-size:1.02rem;margin:0 0 3px}
.entry .sub{color:var(--muted);font-size:.92rem}
.entry .when{color:var(--muted-2);font-size:.82rem;margin-top:3px}
.entry .badge{display:inline-block;font-size:.74rem;font-weight:600;color:var(--cyan);background:var(--grad-soft);border:1px solid var(--line-2);border-radius:999px;padding:.15rem .6rem;margin-top:6px}

/* ---------- Skills marquee ---------- */
.skills{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;max-width:840px;margin:0 auto}
.skill{
  font-family:var(--display);font-weight:600;font-size:.95rem;padding:.6rem 1.1rem;border-radius:999px;
  background:rgba(255,255,255,.04);border:1px solid var(--line-2);color:var(--ink);transition:.2s;
}
.skill:hover{border-color:var(--cyan);color:var(--cyan);transform:translateY(-2px)}

/* ---------- Contact ---------- */
.cta{
  position:relative;overflow:hidden;text-align:center;
  background:
    radial-gradient(120% 140% at 0% 0%,rgba(61,224,255,.14),transparent 55%),
    radial-gradient(120% 140% at 100% 100%,rgba(154,107,255,.16),transparent 55%),
    var(--panel);
  border:1px solid var(--line-2);border-radius:26px;padding:60px 40px;
}
.cta h2{font-size:clamp(1.8rem,3.4vw,2.6rem)}
.cta p{color:var(--muted);font-size:1.08rem;margin:14px auto 28px;max-width:34rem}
.cta__actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}

/* ---------- Footer ---------- */
.footer{border-top:1px solid var(--line);background:var(--bg-2)}
.footer__inner{
  display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;
  padding:30px 24px;color:var(--muted-2);font-size:.88rem;
}
.footer__credit{display:inline-flex;align-items:center;gap:.5rem}
.footer__credit a{color:var(--muted);transition:.2s}
.footer__credit a:hover{color:var(--cyan)}
.mark-svg .mark-orbit{transform-origin:24px 24px;animation:mark-spin 4s linear infinite}
@keyframes mark-spin{to{transform:rotate(360deg)}}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s ease}
.reveal.is-in{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media(max-width:960px){
  .hero__inner{grid-template-columns:1fr;gap:34px}
  .hero__art{order:-1;min-height:300px}
  .stats__grid{grid-template-columns:repeat(2,1fr);gap:20px}
  .about{grid-template-columns:1fr;gap:28px}
  .cards{grid-template-columns:repeat(2,1fr)}
  .duo{grid-template-columns:1fr}
}
@media(max-width:680px){
  .nav__links{
    position:fixed;top:72px;right:16px;left:16px;flex-direction:column;align-items:stretch;
    gap:6px;padding:16px;background:rgba(11,17,36,.97);backdrop-filter:blur(14px);
    border:1px solid var(--line);border-radius:16px;
    transform:translateY(-10px);opacity:0;pointer-events:none;transition:.25s;
  }
  .nav__links.is-open{transform:none;opacity:1;pointer-events:auto}
  .nav__links a{padding:.7rem .6rem}
  .nav__cta{text-align:center}
  .nav__toggle{display:flex}
  .nav__toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav__toggle.is-open span:nth-child(2){opacity:0}
  .nav__toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .hero{padding-top:116px}
  .cards{grid-template-columns:1fr}
  .section{padding:68px 0}
  .cta{padding:42px 24px}
  .tl-item__date{white-space:normal}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none;transition:none}
}