@import url('https://fonts.googleapis.com/css2?family=Inter:ital,opsz,wght@0,14..32,300..900;1,14..32,300..900&display=swap');

:root {
  --bg: #101010;
  --surface: #181818;
  --border: #252525;
  --text: #e0e0e0;
  --muted: #888888;
  --accent: #22d3ee;
  --accent-dim: rgba(34,211,238,0.12);
  --linkedin: #0a66c2;
  --font-body: 'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI','Helvetica Neue',Arial,sans-serif;
  --font-mono: 'SF Mono','Fira Code','JetBrains Mono','Cascadia Code','Courier New',monospace;
  --r: 8px;
  --s: 1.5rem;
  --mw: 720px;
  --sidenav-w: 210px;
  --sidenav-collapsed: 100px;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font-body);background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased}

@keyframes fadeUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
@keyframes draw{to{stroke-dashoffset:0}}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.6}}
@keyframes gradientShift{0%{background-position:0% 50%}50%{background-position:100% 50%}100%{background-position:0% 50%}}
@keyframes traceDot{to{stroke-dashoffset:-3000}}
@keyframes traceDotSlow{from{stroke-dashoffset:18}to{stroke-dashoffset:-9999}}
@keyframes waveLoop{0%{stroke-dashoffset:4000}50%{stroke-dashoffset:0}100%{stroke-dashoffset:-4000}}

.a1{animation:fadeUp .6s ease both}
.a2{animation:fadeUp .6s ease .15s both}
.a3{animation:fadeUp .6s ease .3s both}
.a4{animation:fadeUp .6s ease .45s both}

/* ==========================================================================
   SIDE NAVIGATION
   ========================================================================== */
.sidenav {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidenav-collapsed);
  height: 100vh;
  overflow: hidden;
  transition: width 0.28s cubic-bezier(0.4,0,0.2,1);
  background: rgba(8,8,8,0.50);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  display: flex;
  flex-direction: column;
  padding: 1.75rem 0 1.5rem;
  z-index: 200;
  gap: 0;
  mask: linear-gradient(to right, black 35%, transparent 100%);
  -webkit-mask: linear-gradient(to right, black 35%, transparent 100%);
}

.sidenav-brand {
  font-family: var(--font-body);
  font-size: 0.62rem;
  font-weight: 600;
  color: var(--accent);
  text-shadow: 0 0 10px var(--accent), 0 0 20px rgba(34,211,238,0.4);
  letter-spacing: 0.20em;
  text-transform: uppercase;
  padding: 0.4rem 1rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.sidenav-brand-dot {
  display: none;
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  flex-shrink: 0;
  box-shadow: 0 0 8px var(--accent);
}

.sidenav-links {
  display: flex;
  flex-direction: column;
  gap: 0;
}


.sidenav-btn {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 2.4rem 1rem;
  border-radius: 0;
  color: var(--muted);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: background 0.18s ease, color 0.18s ease, box-shadow 0.18s ease;
  border: none;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  position: relative;
  overflow: hidden;
  -webkit-tap-highlight-color: transparent;
}

.sidenav-btn svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
  flex-shrink: 0;
  transition: stroke 0.18s ease;
}

.sidenav-btn svg.fill-icon {
  fill: currentColor;
  stroke: none;
}

.sidenav-btn svg.bulb {
  fill: currentColor;
  stroke: none;
}

.sidenav-btn:hover {
  background: rgba(255,255,255,0.06);
  color: var(--text);
}

.sidenav-btn.active {
  background: var(--accent-dim);
  color: var(--accent);
  box-shadow: inset 3px 0 0 var(--accent);
}

.sidenav-btn.active svg {
  stroke: var(--accent);
}

.sidenav-btn.active svg.fill-icon,
.sidenav-btn.active svg.bulb {
  stroke: none;
}

.sidenav-btn:active {
  background: rgba(34,211,238,0.10);
}

/* CSS-only click ripple */
.sidenav-btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 50%, rgba(34,211,238,0.18) 0%, transparent 65%);
  opacity: 0;
  transform: scale(0.4);
  transition: opacity 0.35s ease, transform 0.35s ease;
  pointer-events: none;
}

.sidenav-btn:active::after {
  opacity: 1;
  transform: scale(1);
  transition: none;
}

.sidenav-ext {
  font-size: 0.85rem;
}

/* ==========================================================================
   LAYOUT — pages with sidenav
   ========================================================================== */
body.has-sidenav {
  padding-left: var(--sidenav-collapsed);
}
.sidenav:hover{width:var(--sidenav-w)}
.sidenav-btn span{opacity:0;max-width:0;overflow:hidden;white-space:nowrap;transition:opacity 0.15s,max-width 0.22s}
.sidenav:hover .sidenav-btn span{opacity:1;max-width:200px}

main{max-width:1300px;margin:-8rem auto 2rem auto;padding:11rem 15rem 4rem 6rem;background:rgba(12,12,16,0.45);backdrop-filter:blur(14px) saturate(130%);-webkit-backdrop-filter:blur(14px) saturate(130%);border-radius:0 0 24px 24px;border:1px solid rgba(255,255,255,0.06);position:relative;mask:linear-gradient(to right,transparent 0px,black 90px,black calc(100% - 220px),transparent);-webkit-mask:linear-gradient(to right,transparent 0px,black 90px,black calc(100% - 220px),transparent)}

/* ==========================================================================
   HERO
   ========================================================================== */
.hero{min-height:80vh;display:flex;flex-direction:column;justify-content:center;align-items:stretch;position:relative;overflow:hidden;padding-top:1rem}
.hi{font-size:clamp(1.05rem,2.2vw,4rem);color:var(--accent);margin-bottom:.4rem;letter-spacing:.02em;font-weight:500;text-align:justify;padding-left:16%}
.hero h1{font-size:clamp(3.2rem,5.5vw,5.5rem);font-weight:800;letter-spacing:-.04em;line-height:1.0;margin-bottom:.7rem;white-space:nowrap;text-align:center}
.hero .tagline{font-size:clamp(1.05rem,2.2vw,1.4rem);color:var(--muted);margin-bottom:1.5rem;font-weight:500;text-align:center;padding-left:6%}
.tagline .norm{color:var(--muted);font-weight:400}
.tagline .bold{color:var(--text);font-weight:700}

.email-row{display:flex;align-items:center;justify-content:center;gap:.5rem;margin-top:2rem;color:var(--muted);font-size:.9rem}
.email-row a{color:var(--accent);text-decoration:none;transition:opacity .2s ease}
.email-row a:hover{opacity:.8}
.email-row svg{width:18px;height:18px;fill:currentColor}
.tagline-right{text-align:right}
.hero-bio{color:var(--muted);max-width:680px;font-size:.95rem;line-height:1.7;text-align:center;margin:0 auto 1.5rem}
.hero-contact{display:flex;flex-direction:column;align-items:center;gap:.65rem;margin-top:1.5rem}
.hero-contact-item{display:flex;align-items:center;gap:.5rem;color:var(--muted);font-size:.9rem}
.hero-contact-item svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.5;flex-shrink:0}
.hero-contact-item svg.fill-icon{fill:currentColor;stroke:none}
.hero-contact-item a{color:var(--accent);text-decoration:none;transition:opacity .2s}
.hero-contact-item a:hover{opacity:.8}
.email-select{color:var(--accent);user-select:all;cursor:text}
.hero-resume-btn{cursor:pointer;pointer-events:all;display:inline-flex;align-items:center;gap:.4rem;margin-top:.5rem;padding:.5rem 1.2rem;background:rgba(34,211,238,0.08);border:1px solid var(--accent-dim);border-radius:6px;color:var(--accent);text-decoration:none;font-size:.85rem;font-weight:600;letter-spacing:.04em;transition:background .18s,border-color .18s}
.hero-resume-btn:hover{background:rgba(34,211,238,0.15);border-color:var(--accent)}
.hero-resume-btn svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}

/* ==========================================================================
   SQUIRCLE GRID (kept for possible reuse)
   ========================================================================== */
.squircle-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin:2rem 0;max-width:480px;width:100%}
.squircle{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.5rem;padding:1.5rem 1rem;background:var(--surface);border:1px solid var(--border);border-radius:20px;text-decoration:none;color:var(--text);transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;position:relative;overflow:hidden;-webkit-tap-highlight-color:transparent}
.squircle:hover{transform:translateY(-4px);border-color:var(--accent);box-shadow:0 0 28px var(--accent-dim)}
.squircle:active{transform:scale(0.95);border-color:var(--accent)}
.squircle::after{content:'';position:absolute;inset:0;background:radial-gradient(circle at 50% 50%,rgba(34,211,238,.15) 0%,transparent 65%);opacity:0;transform:scale(0.4);transition:opacity .35s ease,transform .35s ease;pointer-events:none}
.squircle:active::after{opacity:1;transform:scale(1);transition:none}
.squircle svg{width:28px;height:28px;fill:none;stroke:var(--accent);stroke-width:1.5}
.squircle svg.bulb{fill:var(--accent);stroke:none}
.squircle span{font-size:.8rem;font-weight:500}
.linkedin-blue{color:var(--linkedin)!important}
.linkedin-blue:hover{color:#4691d4!important}

/* ==========================================================================
   FOOTER
   ========================================================================== */
footer{max-width:var(--mw);margin:0 auto;padding:2rem var(--s);border-top:1px solid var(--border);display:flex;justify-content:space-between;align-items:center;color:var(--muted);font-size:.85rem}
footer .social{display:flex;gap:1rem}
footer .social a{color:var(--muted);transition:color .2s ease}
footer .social a:hover{color:var(--accent)}
footer svg{width:18px;height:18px;fill:currentColor}

/* ==========================================================================
   CIRCUIT BACKGROUND — flipped to right
   ========================================================================== */
.circuit-bg{position:fixed;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:-1;opacity:.52;transform:scaleX(-1)}

/* ==========================================================================
   CARDS
   ========================================================================== */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r);padding:1.5rem;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;cursor:pointer}
.card:hover{transform:translateY(-4px);border-color:var(--accent);box-shadow:0 12px 40px rgba(34,211,238,.08)}
.card:active{transform:scale(0.99)}
.card h2{font-size:1.25rem;font-weight:600;margin-bottom:.5rem}
.card p{color:var(--muted);font-size:.9rem;margin-bottom:1rem}
.tags{display:flex;gap:.5rem;flex-wrap:wrap}
.tag{font-family:var(--font-mono);font-size:.75rem;background:rgba(34,211,238,.08);color:var(--accent);padding:.25rem .5rem;border-radius:4px}

/* ==========================================================================
   POST LIST
   ========================================================================== */
.post-list{list-style:none}
.post-list li{padding:1.5rem 0;border-bottom:1px solid var(--border);position:relative;cursor:pointer;transition:background .18s ease}
.post-list li:hover{background:rgba(255,255,255,0.03)}
.post-list li:last-child{border-bottom:none}
.post-list a{color:var(--text);text-decoration:none;font-weight:600;font-size:1.1rem;display:block;margin-bottom:.25rem;transition:color .2s}
.post-list a:hover{color:var(--accent)}
.post-list a::after{content:'';position:absolute;inset:0}
.post-meta{color:var(--muted);font-size:.85rem;font-family:var(--font-mono)}
.post-summary{color:var(--muted);font-size:.9rem;margin-top:.25rem}

/* ==========================================================================
   PAGE TITLES & INNER PAGE CONTENT
   ========================================================================== */
.page-title{font-size:clamp(1.75rem,4vw,2.5rem);font-weight:700;margin-bottom:.5rem}
.page-sub{color:var(--muted);margin-bottom:2rem}

.skills{display:grid;gap:1.5rem}
.skill-group h3{font-size:1rem;font-weight:600;margin-bottom:.5rem;color:var(--accent)}
.skill-group ul{list-style:none;display:flex;gap:.5rem;flex-wrap:wrap}
.skill-group li{font-family:var(--font-mono);font-size:.8rem;color:var(--muted)}

.exp-item{margin-bottom:1.5rem}
.exp-item h4{font-weight:600;margin-bottom:.25rem}
.exp-item .exp-meta{color:var(--muted);font-size:.85rem;font-family:var(--font-mono);margin-bottom:.5rem}
.exp-item p{color:var(--muted);font-size:.9rem}

.contact-links{display:flex;gap:1.5rem;flex-wrap:wrap;margin-top:1rem}
.contact-links a{display:flex;align-items:center;gap:.5rem;color:var(--text);text-decoration:none;transition:color .2s}
.contact-links a:hover{color:var(--accent)}
.contact-links svg{width:18px;height:18px;fill:currentColor}

/* ==========================================================================
   BLOG POST STYLES
   ========================================================================== */
.blog-header{margin-bottom:2.5rem}
.blog-meta{color:var(--muted);font-size:.85rem;font-family:var(--font-mono);margin-bottom:.5rem}
.blog-title{font-size:clamp(1.5rem,3.5vw,2.25rem);font-weight:700;letter-spacing:-.02em;line-height:1.2;margin-bottom:.75rem}
.blog-subtitle{color:var(--muted);font-size:1rem;margin-bottom:1rem}
.blog-tags{display:flex;gap:.5rem;flex-wrap:wrap;margin-top:.75rem}

.blog-body{font-size:1rem;line-height:1.8;color:var(--text)}
.blog-body h2{font-size:1.4rem;font-weight:700;margin:2.5rem 0 1rem;color:var(--text);letter-spacing:-.01em}
.blog-body h3{font-size:1.1rem;font-weight:600;margin:2rem 0 .75rem;color:var(--accent)}
.blog-body p{margin-bottom:1.25rem;color:var(--text)}
.blog-body code{font-family:var(--font-mono);font-size:.85em;background:var(--surface);padding:.15em .4em;border-radius:4px;color:var(--accent);border:1px solid var(--border)}
.blog-body pre{background:var(--surface);border:1px solid var(--border);border-radius:var(--r);padding:1rem 1.25rem;overflow-x:auto;margin:1.5rem 0;font-family:var(--font-mono);font-size:.83rem;line-height:1.55}
.blog-body pre code{background:none;border:none;padding:0;color:var(--text)}
.blog-body .callout{background:var(--surface);border-left:3px solid var(--accent);padding:1rem 1.25rem;border-radius:0 var(--r) var(--r) 0;margin:1.5rem 0}
.blog-body .callout-title{font-weight:600;color:var(--accent);margin-bottom:.5rem;font-size:.85rem;font-family:var(--font-mono);text-transform:uppercase;letter-spacing:.05em}
.blog-body .benchmark{background:var(--surface);border:1px solid var(--border);border-radius:var(--r);padding:1.25rem;margin:1.5rem 0}
.blog-body .benchmark-title{font-weight:600;color:var(--accent);margin-bottom:.75rem;font-family:var(--font-mono);font-size:.8rem;text-transform:uppercase;letter-spacing:.05em}
.blog-body .bench-row{display:flex;justify-content:space-between;align-items:center;padding:.45rem 0;border-bottom:1px solid var(--border);font-family:var(--font-mono);font-size:.83rem}
.blog-body .bench-row:last-child{border-bottom:none}
.blog-body .bench-label{color:var(--muted)}
.blog-body .bench-value{color:var(--text);font-weight:600}
.blog-body .bench-delta{font-size:.78rem;margin-left:.5rem}
.blog-body .bench-up{color:#4ade80}
.blog-body .bench-down{color:#f87171}
.blog-body .nerd-note{font-size:.9rem;color:var(--muted);font-style:italic;border-left:2px solid var(--border);padding-left:1rem;margin:1.5rem 0}
.blog-body strong{color:var(--text);font-weight:600}
.blog-body em{color:var(--accent);font-style:italic}
.blog-body ul{margin:1rem 0 1.25rem 1.5rem}
.blog-body li{margin-bottom:.5rem;color:var(--text)}
.blog-body .section-break{text-align:center;color:var(--border);margin:2.5rem 0;letter-spacing:.5rem;font-size:1.5rem;user-select:none}
.blog-body a{color:var(--accent);text-decoration:none;border-bottom:1px solid var(--accent-dim);transition:border-color .2s}
.blog-body a:hover{border-bottom-color:var(--accent)}
.blog-body .timeline-step{display:flex;gap:1rem;margin:1rem 0;align-items:flex-start}
.blog-body .timeline-num{font-family:var(--font-mono);font-size:.8rem;color:var(--accent);min-width:2rem;text-align:right;padding-top:.15rem}
.blog-body .timeline-content{flex:1}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
.mobile-nav{display:none}

@media(max-width:768px){
  :root{--sidenav-w:0px}
  .sidenav{display:none}
  body{padding-bottom:66px}
  body.has-sidenav{padding-left:0}
  main{max-width:100%;margin:0;padding:2rem 1.25rem 3rem;border-radius:0;border-left:none;border-right:none;mask:none;-webkit-mask:none}
  .hero{min-height:65vh;padding-top:2rem}
  .hero h1{font-size:clamp(1.8rem,9vw,2.8rem);white-space:normal;letter-spacing:-0.02em}
  .hero .tagline{font-size:clamp(0.9rem,3.5vw,1.1rem)}
  footer{flex-direction:column;gap:1rem;text-align:center}
  .mobile-nav{display:flex;position:fixed;bottom:0;left:0;right:0;height:64px;background:rgba(6,6,8,0.85);backdrop-filter:blur(24px) saturate(160%);-webkit-backdrop-filter:blur(24px) saturate(160%);border-top:1px solid rgba(255,255,255,0.08);z-index:300;align-items:stretch;mask:none;-webkit-mask:none}
  .mobile-nav-btn{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;color:var(--muted);text-decoration:none;font-size:0.58rem;font-weight:600;letter-spacing:0.05em;text-transform:uppercase;transition:color 0.18s,background 0.18s;border-right:1px solid rgba(255,255,255,0.04);-webkit-tap-highlight-color:transparent}
  .mobile-nav-btn:last-child{border-right:none}
  .mobile-nav-btn svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}
  .mobile-nav-btn svg.fill-icon{fill:currentColor;stroke:none}
  .mobile-nav-btn.active{color:var(--accent)}
  .mobile-nav-btn.active svg{filter:drop-shadow(0 0 5px rgba(34,211,238,0.55))}
  .mobile-nav-btn:active{background:rgba(255,255,255,0.06)}
}

/* ==========================================================================
   VIEW TRANSITIONS — premium fade + scale
   ========================================================================== */
@view-transition {
  navigation: auto;
}

@media (prefers-reduced-motion: no-preference) {
  main {
    view-transition-name: page-content;
  }

  ::view-transition-group(page-content) {
    animation-duration: 0.38s;
    animation-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
  }

  ::view-transition-old(page-content) {
    animation-name: vt-fade-out;
  }

  ::view-transition-new(page-content) {
    animation-name: vt-fade-in;
  }

  @keyframes vt-fade-out {
    from { opacity: 1; transform: scale(1) translateY(0); }
    to   { opacity: 0; transform: scale(0.97) translateY(-10px); }
  }

  @keyframes vt-fade-in {
    from { opacity: 0; transform: scale(0.97) translateY(12px); }
    to   { opacity: 1; transform: scale(1) translateY(0); }
  }
}