/* ============ Khushi Rauniyar — 2026 Professional Portfolio ============ */
:root{
  --bg:#f8f9fc;
  --bg-2:#f0f2f8;
  --surface:rgba(255,255,255,.90);
  --surface-strong:rgba(255,255,255,.98);
  --border:rgba(30,58,138,.12);
  --text:#0f172a;
  --muted:#4a5578;
  --primary:#1e3a8a;
  --primary-2:#1d4ed8;
  --pink:#2563eb;
  --grad: #1e3a8a;
  --grad-soft: rgba(30,58,138,.08);
  --shadow-sm: 0 4px 18px -8px rgba(15,23,42,.12);
  --shadow-md: 0 18px 50px -22px rgba(15,23,42,.18);
  --shadow-lg: 0 30px 80px -30px rgba(15,23,42,.22);
  --radius: 22px;
  --radius-sm: 14px;
  --font-body: 'DM Sans', system-ui, sans-serif;
  --font-heading: 'Playfair Display', Georgia, serif;
  --font-mono: 'JetBrains Mono', monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font-body);
  color:var(--text);background:var(--bg);line-height:1.7;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
  font-size:1rem;letter-spacing:.01em;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
h1,h2,h3{font-family:var(--font-heading);font-weight:700;letter-spacing:-.01em;line-height:1.2;margin:0}
h1{font-size:clamp(2.4rem,5.4vw,4rem);font-weight:800}
h2{font-size:clamp(1.8rem,3.2vw,2.6rem);font-weight:700}
h3{font-size:1.1rem;font-family:var(--font-body);font-weight:700;letter-spacing:0}
p{margin:0}
.container{max-width:1180px;margin:0 auto;padding:0 24px}
.muted{color:var(--muted)}
.small{font-size:.85rem}
.center{text-align:center}
.mt-32{margin-top:32px}
.grad-text{color:var(--primary)}

/* ============ Background ============ */
.aurora{position:fixed;inset:0;z-index:-1;overflow:hidden;background:linear-gradient(180deg,var(--bg),var(--bg-2))}
.aurora .blob{position:absolute;border-radius:50%;filter:blur(80px);opacity:.25;animation:float 14s ease-in-out infinite}
.aurora .b1{width:520px;height:520px;background:#bfdbfe;top:-120px;left:-120px}
.aurora .b2{width:620px;height:620px;background:#dbeafe;top:30%;right:-180px;animation-delay:-4s}
.aurora .b3{width:480px;height:480px;background:#e0e7ff;bottom:-160px;left:30%;animation-delay:-8s}
@keyframes float{0%,100%{transform:translate(0,0)}50%{transform:translate(20px,-30px)}}

/* ============ Navbar ============ */
.nav{position:fixed;top:0;left:0;right:0;z-index:50;transition:.3s;padding:16px 0}
.nav.scrolled{padding:10px 0;backdrop-filter:blur(18px);background:rgba(255,255,255,.82);border-bottom:1px solid var(--border);box-shadow:var(--shadow-sm)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo{font-family:var(--font-heading);font-weight:700;font-size:1.15rem;display:inline-flex;align-items:center;gap:8px}
.logo-dot{width:10px;height:10px;border-radius:50%;background:#1e3a8a;box-shadow:0 0 0 4px rgba(30,58,138,.12)}
.logo-accent{color:var(--primary)}
.nav-links{display:flex;gap:6px;align-items:center}
.nav-links a{padding:8px 14px;border-radius:999px;font-size:.92rem;font-weight:500;color:var(--muted);transition:.2s;position:relative}
.nav-links a:hover{color:var(--text);background:var(--grad-soft)}
.nav-links a.active{color:#fff;background:var(--primary)}
.nav-cta{display:inline-flex}
.hamburger{display:none;background:none;border:0;width:42px;height:42px;cursor:pointer;flex-direction:column;justify-content:center;align-items:center;gap:5px;border-radius:12px;border:1px solid var(--border);background:var(--surface)}
.hamburger span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:.25s}
.hamburger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger.open span:nth-child(2){opacity:0}
.hamburger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ============ Buttons ============ */
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 22px;border-radius:999px;font-weight:600;font-size:.93rem;cursor:pointer;border:0;transition:transform .25s ease,box-shadow .25s ease,background .25s ease,color .25s ease,border-color .25s ease;font-family:inherit}
.btn-sm{padding:9px 16px;font-size:.85rem}
.btn-primary{background:#1e3a8a;color:#fff;box-shadow:var(--shadow-md)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);background:#1d4ed8}
.btn-outline{background:var(--surface);border:1px solid var(--border);color:var(--text);backdrop-filter:blur(10px)}
.btn-outline:hover{border-color:var(--primary);color:#fff;transform:translateY(-2px);background:#1e3a8a;box-shadow:var(--shadow-sm)}
.btn-ghost{background:var(--surface);border:1px solid var(--border);color:var(--text);backdrop-filter:blur(10px)}
.btn-ghost:hover{border-color:var(--primary);color:#fff;transform:translateY(-2px);background:#1e3a8a;box-shadow:var(--shadow-sm)}

/* ============ Hero ============ */
.hero{padding:160px 0 100px}
.hero-grid{display:flex;flex-wrap:wrap;gap:64px;align-items:center;justify-content:space-between}
.hero-text{flex:1;min-width:300px}
.chip{display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:999px;background:var(--surface);border:1px solid var(--border);font-size:.8rem;font-weight:600;color:var(--muted);backdrop-filter:blur(10px);margin-bottom:22px}
.pulse{width:8px;height:8px;border-radius:50%;background:#10b981;box-shadow:0 0 0 4px rgba(16,185,129,.2);animation:pulse 1.8s infinite}
@keyframes pulse{50%{box-shadow:0 0 0 8px rgba(16,185,129,0)}}
.role-line{font-size:clamp(1.2rem,2.2vw,1.6rem);font-weight:600;color:var(--primary);margin-top:14px;font-family:var(--font-body);min-height:1.4em}
.caret{display:inline-block;margin-left:2px;color:var(--primary);animation:blink 1s steps(2) infinite}
@keyframes blink{50%{opacity:0}}
.lede{margin-top:22px;font-size:1.05rem;color:var(--muted);max-width:560px}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.socials{display:flex;gap:10px;margin-top:30px}
.socials a{width:44px;height:44px;display:flex;place-items:center;justify-content:center;border-radius:50%;background:var(--surface);border:1px solid var(--border);color:var(--muted);transition:.2s;backdrop-filter:blur(10px)}
.socials a:hover{color:#fff;background:#1e3a8a;transform:translateY(-3px);border-color:transparent}

/* ============ Hero Profile Orb ============ */
.hero-card{display:flex;justify-content:center;flex-shrink:0}
.orb-wrap{position:relative;width:min(420px,90vw);aspect-ratio:1}

/* Spinning ring — hidden at rest, spins on hover */
.orb-ring{
  position:absolute;inset:-20px;border-radius:50%;
  background:conic-gradient(from 0deg,#1e3a8a,#2563eb,#3b82f6,#1e3a8a);
  filter:blur(20px);opacity:0;
  animation:spin 10s linear infinite;
  transition:opacity .4s ease;
}
@keyframes spin{to{transform:rotate(360deg)}}

/* Scale + lift + ring reveal on hover */
.orb-wrap:hover .orb-ring{opacity:.45}
.orb-wrap:hover .orb{transform:scale(1.04);box-shadow:0 40px 90px -20px rgba(15,23,42,.30)}
.orb-wrap:hover .orb img{filter:brightness(1.06) contrast(1.04)}

.orb{
  position:absolute;inset:0;border-radius:50%;padding:6px;
  background:#1e3a8a;box-shadow:var(--shadow-lg);
  transition:transform .45s cubic-bezier(.2,.7,.2,1), box-shadow .45s ease;
}
.orb img{
  width:100%;height:100%;border-radius:50%;object-fit:cover;background:#fff;
  transition:filter .45s ease;
}

/* Float badges lift slightly on orb hover */
.float-badge{
  position:absolute;padding:10px 16px;border-radius:14px;
  background:var(--surface-strong);backdrop-filter:blur(14px);
  border:1px solid var(--border);font-size:.85rem;font-weight:600;
  box-shadow:var(--shadow-sm);animation:float 6s ease-in-out infinite;
  transition:transform .3s ease, box-shadow .3s ease;
}
.orb-wrap:hover .float-badge{transform:translateY(-6px);box-shadow:var(--shadow-md)}
.fb1{top:8%;left:-10%}
.fb2{top:0;right:-6%;animation-delay:-2s}
.fb3{bottom:14%;left:-14%;animation-delay:-4s}
.fb4{bottom:0;right:-4%;animation-delay:-3s}

/* ============ Sections ============ */
.section{padding:110px 0;position:relative}
.section.alt{background:linear-gradient(180deg,transparent,rgba(240,242,248,.7),transparent)}
.section-head{max-width:680px;margin:0 auto 60px;text-align:center}
.kicker{display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:var(--primary);margin-bottom:14px}
.section-head p{margin-top:16px;color:var(--muted)}

/* ============ Glass cards ============ */
.glass{background:var(--surface);backdrop-filter:blur(16px);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm);transition:transform .3s,box-shadow .3s,border-color .3s}
.glass:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:rgba(30,58,138,.25)}

.grid-3{display:flex;flex-wrap:wrap;gap:24px}
.grid-3 > *{flex:1;min-width:260px}
.grid-4{display:flex;flex-wrap:wrap;gap:22px}
.grid-4 > *{flex:1;min-width:200px}
.card{padding:28px}
.card .ic{width:44px;height:44px;border-radius:14px;background:var(--grad-soft);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:1.1rem;margin-bottom:18px}
.card h3{margin-bottom:8px}
.card p{color:var(--muted);font-size:.92rem}

/* Timeline */
.timeline{list-style:none;padding:0;margin:0;position:relative;max-width:780px;margin:0 auto}
.timeline::before{content:"";position:absolute;left:18px;top:8px;bottom:8px;width:2px;background:#1e3a8a}
.t-item{position:relative;padding-left:60px;margin-bottom:28px}
.t-dot{position:absolute;left:10px;top:18px;width:18px;height:18px;border-radius:50%;background:#1e3a8a;box-shadow:0 0 0 5px var(--bg),0 0 0 6px var(--border)}
.t-card{padding:24px 26px}
.t-tag{display:inline-block;padding:4px 12px;border-radius:999px;background:var(--grad-soft);color:var(--primary);font-size:.72rem;font-weight:700;letter-spacing:.05em;text-transform:uppercase;margin-bottom:10px}

/* Skills */
.skill-card{padding:28px}
.skill-card h3{margin-bottom:18px}
.bars{display:flex;flex-direction:column;gap:14px}
.bar span{display:flex;justify-content:space-between;font-size:.88rem;font-weight:600;margin-bottom:6px}
.bar i{display:block;height:8px;border-radius:999px;background:rgba(30,58,138,.10);overflow:hidden}
.bar i b{display:block;height:100%;width:0;background:#1e3a8a;border-radius:999px;transition:width 1.4s cubic-bezier(.2,.7,.2,1)}
.bar.run i b{width:var(--w)}
.pills{display:flex;flex-wrap:wrap;gap:8px}
.pills span{padding:8px 14px;border-radius:999px;background:rgba(30,58,138,.07);color:var(--primary);font-size:.85rem;font-weight:600;transition:.2s;cursor:default}
.pills span:hover{background:#1e3a8a;color:#fff;transform:translateY(-2px)}

/* Certifications */
.cert{padding:26px;text-align:center}
.cert-badge{width:54px;height:54px;border-radius:50%;background:#1e3a8a;color:#fff;display:flex;align-items:center;justify-content:center;margin:0 auto 16px;font-size:1.4rem;box-shadow:var(--shadow-md)}
.cert h3{margin-bottom:6px}
.cert p{margin-bottom:14px}

/* Projects */
.filters{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:36px}
.filter{padding:9px 20px;border-radius:999px;border:1px solid var(--border);background:var(--surface);color:var(--muted);cursor:pointer;font-weight:600;font-size:.85rem;transition:.2s;backdrop-filter:blur(10px);font-family:inherit}
.filter:hover{color:var(--primary);border-color:var(--primary)}
.filter.active{background:#1e3a8a;color:#fff;border-color:transparent}
.projects-wrap{display:flex;flex-wrap:wrap;gap:24px}
.project{padding:22px;display:flex;flex-direction:column;flex:0 0 calc(33.333% - 16px);width:calc(33.333% - 16px);min-width:0;box-sizing:border-box}
.thumb{height:160px;border-radius:var(--radius-sm);background:var(--grad-soft);display:flex;align-items:center;justify-content:center;font-size:3.5rem;margin-bottom:18px;position:relative;overflow:hidden}
.thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(135deg,transparent 60%,rgba(255,255,255,.3))}
.th1{background:#dbeafe}
.th2{background:#e0e7ff}
.th3{background:#ede9fe}
.th4{background:#f0f9ff}
.th5{background:#f5f3ff}
.project h3{margin-bottom:8px}
.project p{color:var(--muted);font-size:.92rem;margin-bottom:14px;flex:1}
.tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:16px}
.tags span{padding:4px 10px;border-radius:8px;background:rgba(30,58,138,.08);color:var(--primary);font-size:.72rem;font-weight:600}
.row-actions{display:flex;gap:10px}

/* Repos */
.repo{padding:22px;display:block}
.repo-head{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.repo-ic{width:34px;height:34px;border-radius:10px;background:var(--grad-soft);color:var(--primary);display:flex;align-items:center;justify-content:center;font-weight:700}
.repo p{color:var(--muted);font-size:.9rem;margin-bottom:14px}

/* Stats */
.stats-grid{display:flex;flex-wrap:wrap;gap:22px}
.stats-grid > *{flex:1;min-width:160px}
.stat{padding:32px 22px;text-align:center}
.stat .num{font-family:var(--font-heading);font-size:2.6rem;font-weight:700;color:var(--primary);margin-bottom:6px}
.stat p{color:var(--muted);font-size:.9rem;font-weight:600}

/* Learning */
.learning{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;max-width:760px;margin:0 auto}
.learning span{padding:12px 22px;border-radius:999px;background:var(--surface);border:1px solid var(--border);font-weight:600;backdrop-filter:blur(10px);transition:.25s;font-size:.92rem}
.learning span:hover{background:#1e3a8a;color:#fff;border-color:transparent;transform:translateY(-3px)}

/* Testimonials */
.quote{padding:28px;font-style:italic}
.quote p{color:var(--text);margin-bottom:14px}
.quote footer{font-style:normal;color:var(--muted);font-size:.85rem;font-weight:600}

/* Contact */
.contact-grid{display:flex;flex-wrap:wrap;gap:48px;align-items:start}
.contact-grid > *:first-child{flex:1;min-width:260px}
.contact-grid > *:last-child{flex:1.1;min-width:280px}
.contact-list{list-style:none;padding:0;margin:24px 0 0;display:flex;flex-direction:column;gap:14px}
.contact-list li{display:flex;flex-direction:column;padding:14px 18px;border-radius:14px;background:var(--surface);border:1px solid var(--border);backdrop-filter:blur(10px)}
.contact-list strong{font-size:.72rem;text-transform:uppercase;letter-spacing:.1em;color:var(--muted)}
.contact-list a{color:var(--text);font-weight:600;margin-top:2px;word-break:break-all}
.form{padding:30px;display:flex;flex-direction:column;gap:16px}
.form label{display:flex;flex-direction:column;gap:8px;font-size:.78rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}
.form input,.form textarea{padding:13px 16px;border-radius:12px;border:1px solid var(--border);background:rgba(255,255,255,.85);font-family:inherit;font-size:.95rem;color:var(--text);outline:none;transition:.2s;text-transform:none;font-weight:400;letter-spacing:normal}
.form input:focus,.form textarea:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(30,58,138,.10)}
.form textarea{resize:vertical;min-height:120px}
.row-2{display:flex;flex-wrap:wrap;gap:14px}
.row-2 > *{flex:1;min-width:160px}
.form-msg{font-size:.88rem;font-weight:600;min-height:1.2em}
.form-msg.ok{color:#059669}
.form-msg.err{color:#dc2626}

/* Footer */
.footer{padding:50px 0 30px;border-top:1px solid var(--border);margin-top:40px;background:rgba(255,255,255,.5);backdrop-filter:blur(10px)}
.footer-inner{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:24px}
.foot-nav{display:flex;gap:18px}
.foot-nav a,.foot-social a{color:var(--muted);font-size:.9rem;font-weight:500;transition:.2s}
.foot-nav a:hover,.foot-social a:hover{color:var(--primary)}
.foot-social{display:flex;gap:14px}

/* Back to top */
.to-top{position:fixed;bottom:24px;right:24px;width:48px;height:48px;border-radius:50%;background:#1e3a8a;color:#fff;border:0;cursor:pointer;box-shadow:var(--shadow-md);opacity:0;pointer-events:none;transition:.3s;z-index:40;font-size:1.2rem;font-weight:700}
.to-top.show{opacity:1;pointer-events:auto}
.to-top:hover{transform:translateY(-4px)}

/* Reveal */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .8s ease,transform .8s ease}
.reveal.in{opacity:1;transform:none}

/* Responsive */
@media (max-width: 960px){
  .hero{padding:130px 0 70px}
  .hero-grid{flex-direction:column;gap:50px;text-align:left}
  .contact-grid{flex-direction:column;gap:30px}
  .nav-cta{display:none}
}
@media (max-width: 640px){
  .nav-links{position:fixed;top:64px;right:16px;left:16px;flex-direction:column;align-items:stretch;background:var(--surface-strong);backdrop-filter:blur(18px);border:1px solid var(--border);border-radius:18px;padding:14px;gap:4px;box-shadow:var(--shadow-md);transform:translateY(-10px) scale(.98);opacity:0;pointer-events:none;transition:.25s}
  .nav-links.open{transform:none;opacity:1;pointer-events:auto}
  .nav-links a{padding:12px 14px}
  .hamburger{display:flex}
  .grid-3 > *,.grid-4 > *{min-width:100%}
  .project{flex:0 0 100%;width:100%}
  .stats-grid > *{min-width:140px}
  .row-2 > *{min-width:100%}
  .orb-wrap{width:min(320px,80vw)}
  .float-badge{font-size:.75rem;padding:8px 12px}
  .section{padding:80px 0}
  .cta-row{flex-direction:column}
  .cta-row .btn{width:100%;justify-content:center}
}