/* ============================================================
   Yaswanth Rajana — Resume Portfolio (v3, modern)
   Deep space navy · violet→cyan gradient · Outfit + Manrope
   ============================================================ */
:root{
  --bg:#0A0D16; --bg-2:#0D1220; --surface:rgba(255,255,255,.03);
  --surface-2:rgba(255,255,255,.055);
  --ink:#F1F4FA; --muted:#9CA6BD; --faint:#616D87;
  --violet:#8B5CF6; --cyan:#22D3EE; --green:#34D399;
  --grad:linear-gradient(95deg,#8B5CF6 10%,#22D3EE 90%);
  --violet-dim:rgba(139,92,246,.14); --cyan-dim:rgba(34,211,238,.12);
  --line:rgba(255,255,255,.08); --line-strong:rgba(139,92,246,.4);
  --radius:16px;
  --display:"Outfit",system-ui,sans-serif;
  --body:"Manrope",system-ui,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--body);background:var(--bg);color:var(--ink);line-height:1.7;font-size:16.5px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
::selection{background:var(--violet);color:#fff}
.container{max-width:1140px;margin:0 auto;padding:0 28px}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- Nav ---------- */
.nav{position:sticky;top:0;z-index:60;background:rgba(10,13,22,.85);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{font-family:var(--display);font-weight:700;font-size:1.2rem;letter-spacing:-.01em}
.logo span{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.nav-links{display:flex;gap:32px;list-style:none;align-items:center}
.nav-links a{font-size:.9rem;font-weight:600;color:var(--muted);transition:color .25s}
.nav-links a:hover{color:var(--ink)}
.nav-links a.active{color:var(--cyan)}
.nav-cta{background:var(--grad);color:#fff !important;padding:10px 22px;border-radius:10px;transition:opacity .25s,transform .2s}
.nav-cta:hover{opacity:.9;transform:translateY(-1px)}
.hamburger{display:none;background:none;border:0;font-size:1.5rem;cursor:pointer;color:var(--ink)}

/* ---------- Type ---------- */
.eyebrow{font-family:var(--display);font-size:.8rem;font-weight:700;letter-spacing:.22em;text-transform:uppercase;color:var(--cyan);margin-bottom:18px}
.eyebrow b{color:var(--violet);margin-right:10px}
h1.display{font-family:var(--display);font-weight:700;font-size:clamp(2.5rem,5.6vw,4.3rem);line-height:1.08;letter-spacing:-.03em}
h2.title{font-family:var(--display);font-weight:700;font-size:clamp(1.7rem,3.4vw,2.5rem);line-height:1.15;letter-spacing:-.02em}
.lede{margin-top:24px;font-size:1.08rem;color:var(--muted);max-width:60ch}
.lede strong{color:var(--ink)}
.section-intro{margin-top:14px;color:var(--muted);max-width:62ch}

/* ---------- Hero ---------- */
.hero{position:relative;padding:104px 0 84px;overflow:hidden}
.hero::before{content:"";position:absolute;top:-260px;left:50%;transform:translateX(-50%);width:900px;height:600px;
  background:radial-gradient(ellipse,rgba(139,92,246,.18),transparent 60%);pointer-events:none}
.hero::after{content:"";position:absolute;bottom:-200px;right:-160px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(34,211,238,.1),transparent 62%);pointer-events:none}
.hero .container{position:relative;z-index:1}
.hero-badge{display:inline-flex;align-items:center;gap:10px;border:1px solid rgba(52,211,153,.35);border-radius:999px;padding:9px 20px;font-size:.85rem;font-weight:600;color:var(--green);background:rgba(52,211,153,.08)}
.hero-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 12px var(--green);animation:pulse 2s infinite}
@keyframes pulse{50%{opacity:.5}}
@media (prefers-reduced-motion:reduce){.hero-badge .dot{animation:none}}
.hero .role{font-family:var(--display);font-weight:600;font-size:1.05rem;letter-spacing:.06em;color:var(--cyan);margin-top:26px}
.hero h1.display{margin-top:12px}
.hero-actions{margin-top:36px;display:flex;gap:16px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:10px;padding:15px 30px;border-radius:12px;font-weight:700;font-family:var(--display);font-size:.95rem;letter-spacing:.02em;transition:all .25s}
.btn-primary{background:var(--grad);color:#fff}
.btn-primary:hover{box-shadow:0 10px 36px rgba(139,92,246,.4);transform:translateY(-2px)}
.btn-ghost{border:1px solid var(--line);color:var(--ink);background:var(--surface)}
.btn-ghost:hover{border-color:var(--line-strong);color:var(--cyan)}

/* ---------- Highlight tiles under hero ---------- */
.tiles{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:56px}
.tile{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:20px 22px;transition:all .3s}
.tile:hover{border-color:var(--line-strong);background:var(--surface-2);transform:translateY(-3px)}
.tile .ic{font-size:1.4rem}
.tile b{display:block;font-family:var(--display);font-weight:700;font-size:.98rem;margin-top:10px}
.tile span{font-size:.8rem;color:var(--faint)}

/* ---------- Stats ---------- */
.stats{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg-2)}
.stats-inner{display:grid;grid-template-columns:repeat(4,1fr)}
.stat{padding:40px 28px;border-right:1px solid var(--line)}
.stat:last-child{border-right:0}
.stat b{display:block;font-family:var(--display);font-weight:700;font-size:2.5rem;letter-spacing:-.02em;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat p{font-size:.8rem;color:var(--faint);letter-spacing:.08em;text-transform:uppercase;margin-top:6px;font-weight:700}

/* ---------- Sections ---------- */
.section{padding:96px 0;position:relative}
.section.tinted{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:660px}

/* ---------- Cards ---------- */
.grid{display:grid;gap:20px;margin-top:48px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:30px;transition:all .3s}
.card:hover{background:var(--surface-2);border-color:var(--line-strong);transform:translateY(-4px)}
.card .ic{width:46px;height:46px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:1.3rem;background:var(--violet-dim);border:1px solid rgba(139,92,246,.25);margin-bottom:18px}
.card.cy .ic{background:var(--cyan-dim);border-color:rgba(34,211,238,.25)}
.card h3{font-family:var(--display);font-weight:700;font-size:1.15rem;margin-bottom:10px}
.card p{color:var(--muted);font-size:.94rem}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.chip{font-size:.78rem;font-weight:600;color:var(--muted);border:1px solid var(--line);border-radius:8px;padding:5px 12px;background:rgba(255,255,255,.02);transition:all .25s;cursor:default}
.chip:hover{color:var(--cyan);border-color:rgba(34,211,238,.4);background:var(--cyan-dim)}

/* ---------- Tools stack ---------- */
.stack-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:48px}
.stack-cat{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:border-color .3s}
.stack-cat:hover{border-color:var(--line-strong)}
.stack-cat h3{font-family:var(--display);font-size:.78rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;padding-bottom:14px;border-bottom:1px solid var(--line);margin-bottom:16px}

/* ---------- Experience timeline ---------- */
.timeline{margin-top:48px;position:relative}
.tl-item{display:grid;grid-template-columns:210px 1fr;gap:36px;padding:36px 0;border-bottom:1px solid var(--line)}
.tl-item:last-child{border-bottom:0}
.tl-item .when{font-family:var(--display);font-size:.8rem;color:var(--cyan);letter-spacing:.08em;text-transform:uppercase;font-weight:700;padding-top:6px}
.tl-item h3{font-family:var(--display);font-weight:700;font-size:1.25rem}
.tl-item .org{color:var(--violet);font-size:.92rem;font-weight:700}
.tl-item ul{margin:14px 0 0;list-style:none}
.tl-item li{color:var(--muted);font-size:.93rem;padding:6px 0 6px 22px;position:relative}
.tl-item li::before{content:"▸";position:absolute;left:0;color:var(--violet)}
.tl-item li strong{color:var(--ink);font-weight:600}

/* ---------- Projects ---------- */
.project{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:36px;margin-top:24px;display:grid;grid-template-columns:1fr 1.6fr;gap:38px;transition:all .3s}
.project:hover{border-color:var(--line-strong);background:var(--surface-2)}
.project .num{font-family:var(--display);font-weight:700;font-size:.85rem;letter-spacing:.14em;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.project h3{font-family:var(--display);font-weight:700;font-size:1.35rem;line-height:1.3;margin-top:8px}
.project .impact{display:inline-block;margin-top:16px;border:1px solid rgba(52,211,153,.35);background:rgba(52,211,153,.08);border-radius:10px;padding:8px 16px;font-size:.82rem;font-weight:700;color:var(--green)}
.project .body p{color:var(--muted);font-size:.95rem;margin-bottom:12px}
.project .body strong{color:var(--ink);font-weight:600}

/* ---------- Certifications ---------- */
.cert-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:48px}
.cert{display:flex;align-items:center;gap:16px;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:18px 22px;transition:all .3s}
.cert:hover{border-color:var(--line-strong);background:var(--surface-2)}
.cert .badge{width:44px;height:44px;flex:none;border-radius:12px;background:var(--violet-dim);border:1px solid rgba(139,92,246,.3);display:flex;align-items:center;justify-content:center;font-size:1.15rem}
.cert b{display:block;font-family:var(--display);font-size:.95rem;font-weight:700}
.cert span{font-size:.8rem;color:var(--faint)}

/* ---------- CTA ---------- */
.cta{position:relative;border:1px solid var(--line);border-radius:24px;padding:66px 56px;text-align:center;margin:96px auto;overflow:hidden;background:var(--bg-2)}
.cta::before{content:"";position:absolute;inset:0;background:radial-gradient(ellipse at 50% -40%,rgba(139,92,246,.22),transparent 60%);pointer-events:none}
.cta h2{font-family:var(--display);font-weight:700;font-size:clamp(1.7rem,3.4vw,2.6rem);letter-spacing:-.02em;max-width:24ch;margin:0 auto;position:relative}
.cta p{color:var(--muted);margin:16px auto 32px;max-width:50ch;position:relative}
.cta .btn{position:relative}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:52px;margin-top:48px}
.contact-list{list-style:none}
.contact-list li{display:flex;gap:18px;padding:19px 0;border-bottom:1px solid var(--line)}
.contact-list .k{font-family:var(--display);font-size:.72rem;color:var(--faint);text-transform:uppercase;letter-spacing:.18em;font-weight:700;min-width:96px;padding-top:5px}
.contact-list a{font-weight:700;color:var(--ink);transition:color .25s}
.contact-list a:hover{color:var(--cyan)}
form .field{margin-bottom:18px}
form label{display:block;font-family:var(--display);font-size:.75rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--faint);margin-bottom:8px}
form input,form textarea{width:100%;padding:14px 17px;border:1px solid var(--line);border-radius:12px;font-family:var(--body);font-size:.98rem;background:var(--surface);color:var(--ink);transition:border-color .25s}
form input::placeholder,form textarea::placeholder{color:var(--faint)}
form input:focus,form textarea:focus{outline:none;border-color:var(--violet)}

/* ---------- Footer ---------- */
footer{border-top:1px solid var(--line);padding:40px 0;background:var(--bg-2)}
.footer-inner{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:18px;color:var(--faint);font-size:.86rem}
.footer-inner .links{display:flex;gap:26px}
.footer-inner a{transition:color .25s}
.footer-inner a:hover{color:var(--cyan)}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}

a:focus-visible,button:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:8px}
@media (max-width:960px){
  .grid-3,.stack-grid{grid-template-columns:1fr 1fr}
  .tiles{grid-template-columns:1fr 1fr}
  .stats-inner{grid-template-columns:1fr 1fr}
  .stat:nth-child(2){border-right:0}
  .stat:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .tl-item,.project{grid-template-columns:1fr;gap:16px}
}
@media (max-width:660px){
  .grid-3,.grid-2,.stack-grid,.cert-grid,.contact-grid,.tiles{grid-template-columns:1fr}
  .nav-links{display:none;position:absolute;top:72px;left:0;right:0;background:var(--bg-2);flex-direction:column;padding:24px;border-bottom:1px solid var(--line);gap:18px}
  .nav-links.open{display:flex}
  .hamburger{display:block}
  .cta{padding:44px 26px}
  .hero{padding:76px 0 60px}
}

/* ---------- Header LinkedIn icon ---------- */
.nav-links .nav-icon{display:flex;align-items:center;justify-content:center;width:38px;height:38px;border:1px solid var(--line);border-radius:10px;color:var(--muted);transition:all .25s}
.nav-links .nav-icon:hover{color:var(--cyan);border-color:rgba(34,211,238,.45);background:var(--cyan-dim)}
@media (max-width:660px){.nav-links .nav-icon{width:auto;height:auto;border:0;justify-content:flex-start;gap:10px}.nav-links .nav-icon::after{content:"LinkedIn";font-size:.9rem;font-weight:600}}