/* =========================================================
   TOKENS — light "dossier" default, dark mode optional
========================================================= */
:root{
  --bg:#F3F4F7;
  --bg-alt:#FFFFFF;
  --surface:#FFFFFF;
  --surface-tint:rgba(15,23,42,0.035);
  --border:rgba(15,23,42,0.11);
  --text:#12172B;
  --text-dim:#4B5568;
  --text-faint:#8891A3;
  --accent:#1D4ED8;
  --accent-rgb:29,78,216;
  --accent-2:#B45309;
  --accent-3:#A6294B;
  --font-display:'Space Grotesk',sans-serif;
  --font-body:'IBM Plex Sans',sans-serif;
  --font-mono:'IBM Plex Mono',monospace;
  --radius:12px;
  --shadow:0 14px 34px rgba(15,23,42,0.09);
}

[data-theme="dark"]{
  --bg:#0E1220;
  --bg-alt:#151B2C;
  --surface:#151B2C;
  --surface-tint:rgba(255,255,255,0.035);
  --border:rgba(255,255,255,0.11);
  --text:#E8EAF2;
  --text-dim:#9AA3B8;
  --text-faint:#616B85;
  --accent:#6D9BFF;
  --accent-rgb:109,155,255;
  --shadow:0 20px 46px rgba(0,0,0,0.45);
}

/* =========================================================
   RESET / BASE
========================================================= */
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-body);
  transition:background .35s ease,color .35s ease;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;}
ul{list-style:none;}
img{max-width:100%;display:block;}
::selection{background:var(--accent);color:#fff;}

@media (prefers-reduced-motion: reduce){
  *{animation-duration:0.001ms !important;animation-iteration-count:1 !important;transition-duration:0.001ms !important;scroll-behavior:auto !important;}
}

/* faint document grid — kept intentionally subtle */
body::before{
  content:"";
  position:fixed;inset:0;
  background-image:
    linear-gradient(var(--border) 1px,transparent 1px),
    linear-gradient(90deg,var(--border) 1px,transparent 1px);
  background-size:72px 72px;
  opacity:.22;
  mask-image:linear-gradient(#000 0%, transparent 55%);
  pointer-events:none;
  z-index:0;
}

/* =========================================================
   NAVBAR
========================================================= */
.navbar{
  position:sticky;top:0;z-index:50;
  display:flex;align-items:center;justify-content:space-between;
  padding:1.05rem 6%;
  backdrop-filter:blur(14px);
  background:rgba(243,244,247,0.78);
  border-bottom:1px solid var(--border);
}
[data-theme="dark"] .navbar{background:rgba(14,18,32,0.78);}

.nav-left{
  font-family:var(--font-display);
  font-weight:600;font-size:1.05rem;letter-spacing:.01em;
}
.dot-accent{color:var(--accent);}

.nav-right{display:flex;align-items:center;gap:1.7rem;}
.nav-right a{font-size:.9rem;color:var(--text-dim);transition:.2s;}
.nav-right a:hover{color:var(--text);}
.nav-resume{
  font-family:var(--font-mono);
  color:var(--accent) !important;
  border:1px solid rgba(var(--accent-rgb),.35);
  padding:.4rem .85rem;border-radius:8px;
  font-size:.78rem !important;
}
.nav-resume:hover{background:rgba(var(--accent-rgb),.08);}

#theme-toggle{
  border:1px solid var(--border);background:none;cursor:pointer;
  width:32px;height:32px;border-radius:8px;color:var(--text-dim);
  display:flex;align-items:center;justify-content:center;font-size:.85rem;
}
.nav-burger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px;}
.nav-burger span{width:22px;height:2px;background:var(--text);border-radius:2px;}

/* =========================================================
   HERO — dossier layout
========================================================= */
.hero{
  position:relative;
  padding:4.5rem 6% 4rem;
}
.hero-container{
  position:relative;z-index:1;
  max-width:1140px;margin:0 auto;
  display:grid;grid-template-columns:1.15fr .85fr;gap:3.5rem;align-items:center;
}
.hero-text{max-width:640px;}

.eyebrow-row{
  display:flex;align-items:center;gap:.6rem;
  margin-bottom:1.1rem;
}
.eyebrow-row .index-no{
  font-family:var(--font-mono);font-size:.75rem;color:var(--accent);
}
.eyebrow-row .rule{flex:0 0 34px;height:1px;background:var(--border);}
.eyebrow-row .status{
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.1em;color:var(--text-faint);
}

.hero-title{
  font-family:var(--font-display);
  font-weight:600;
  font-size:clamp(2.5rem,5vw,4rem);
  line-height:1.04;
  letter-spacing:-.01em;
}
.hero-role{
  font-family:var(--font-mono);
  font-weight:500;
  font-size:clamp(.98rem,1.6vw,1.1rem);
  color:var(--accent);
  margin-top:.6rem;
}

.hero-subtext{
  margin-top:1.2rem;
  font-size:1.08rem;line-height:1.75;
  color:var(--text-dim);
  max-width:600px;
}

.hero-buttons{margin-top:1.9rem;display:flex;gap:1rem;flex-wrap:wrap;}
.btn{
  background:var(--accent);color:#fff;
  padding:.8rem 1.4rem;border-radius:8px;
  font-weight:600;font-size:.9rem;
  transition:.2s;display:inline-block;
}
.btn:hover{opacity:.88;}
.btn-outline{
  border:1px solid var(--border);color:var(--text);
  padding:.8rem 1.4rem;border-radius:8px;font-weight:600;font-size:.9rem;
  transition:.2s;display:inline-block;
}
.btn-outline:hover{border-color:var(--accent);color:var(--accent);}
.btn-outline.small{padding:.55rem 1rem;font-size:.82rem;margin-top:1.3rem;}

.hero-links{margin-top:2rem;display:flex;gap:1.3rem;flex-wrap:wrap;}
.hero-links a{font-family:var(--font-mono);font-size:.8rem;color:var(--text-faint);transition:.2s;border-bottom:1px solid transparent;}
.hero-links a:hover{color:var(--accent);border-color:var(--accent);}

/* stat row — inline, not floating */
.stat-row{
  display:flex;gap:1.8rem;margin-top:2.2rem;
  padding-top:1.6rem;border-top:1px solid var(--border);
  flex-wrap:wrap;
}
.stat-row .stat-item{display:flex;flex-direction:column;gap:.15rem;}
.stat-row .metric-value{font-family:var(--font-display);font-weight:600;font-size:1.5rem;color:var(--text);}
.stat-row .stat-label{font-family:var(--font-mono);font-size:.68rem;letter-spacing:.05em;color:var(--text-faint);}

@media (max-width:900px){
  .hero-container{grid-template-columns:1fr;gap:2.2rem;}
  .hero-photo{max-width:320px;}
  .stat-row{gap:1.4rem;}
}

/* --- photo panel: circular avatar --- */
.hero-photo{
  position:relative;
  display:flex;flex-direction:column;align-items:center;
  gap:1.1rem;
}
.avatar-wrap{
  position:relative;
  width:min(260px,80%);
  aspect-ratio:1/1;
  border-radius:50%;
  padding:6px;
  background:linear-gradient(150deg,var(--accent),var(--surface-tint) 65%);
  box-shadow:var(--shadow);
}
.avatar-wrap::after{
  content:"";
  position:absolute;inset:0;
  border-radius:50%;
  border:1px solid var(--border);
}
.avatar-img{
  width:100%;height:100%;
  border-radius:50%;
  object-fit:cover;
  object-position:center top;
  display:block;
  border:3px solid var(--bg);
  background:var(--surface);
}
.avatar-caption{
  display:flex;align-items:center;gap:.6rem;
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.06em;
  color:var(--text-faint);
}
.avatar-caption .avatar-name{color:var(--text);font-weight:600;}
.avatar-status{display:flex;align-items:center;gap:.4rem;color:var(--accent);}
.avatar-status .dot{width:5px;height:5px;background:var(--accent);border-radius:50%;}

/* =========================================================
   STATS STRIP
========================================================= */
.stats-strip{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--border);border-bottom:1px solid var(--border);
  background:var(--bg-alt);
  position:relative;z-index:1;
}
.stat{
  padding:2rem 1rem;text-align:center;
  border-right:1px solid var(--border);
}
.stat:last-child{border-right:none;}
.stat .metric-value{font-family:var(--font-display);font-weight:600;font-size:1.8rem;color:var(--text);}
.stat-label{
  display:block;margin-top:.3rem;
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.04em;
  color:var(--text-faint);
}
@media (max-width:700px){
  .stats-strip{grid-template-columns:repeat(2,1fr);}
  .stat:nth-child(2){border-right:none;}
}

/* =========================================================
   SECTIONS (generic)
========================================================= */
.section{
  padding:5.5rem 6%;
  max-width:1280px;margin:0 auto;
  position:relative;z-index:1;
}
.section-head{margin-bottom:2.6rem;}
.section-head.center{text-align:center;max-width:600px;margin-left:auto;margin-right:auto;}
.eyebrow{
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.12em;
  color:var(--accent);display:block;margin-bottom:.6rem;
}
.section-title{
  font-family:var(--font-display);font-weight:600;
  font-size:clamp(1.7rem,3vw,2.3rem);letter-spacing:-.01em;
}

/* =========================================================
   ABOUT
========================================================= */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:3.5rem;align-items:start;}
.about-copy p{color:var(--text-dim);line-height:1.75;font-size:1rem;margin-bottom:1.05rem;}
.about-copy strong{color:var(--text);}

.pipeline-mini{
  border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;
  background:var(--surface);
}
.pipe-step{
  display:grid;grid-template-columns:56px 1fr;gap:1rem;
  padding:1.05rem 1.2rem;
  border-bottom:1px solid var(--border);
}
.pipe-step:last-child{border-bottom:none;}
.pipe-num{
  font-family:var(--font-mono);font-size:.68rem;color:var(--accent);
  padding-top:.15rem;
}
.pipe-step h4{font-family:var(--font-display);font-weight:600;margin-bottom:.25rem;font-size:.98rem;}
.pipe-step p{color:var(--text-dim);font-size:.84rem;line-height:1.5;}

@media (max-width:900px){
  .about-grid{grid-template-columns:1fr;}
}

/* =========================================================
   TIMELINE
========================================================= */
.timeline{position:relative;padding-left:2rem;}
.timeline::before{
  content:"";position:absolute;left:4px;top:6px;bottom:6px;width:1px;
  background:var(--border);
}
.timeline-card{position:relative;padding-bottom:2.4rem;}
.timeline-card:last-child{padding-bottom:0;}
.tl-dot{
  position:absolute;left:-2rem;top:5px;width:9px;height:9px;
  background:var(--bg);border:1.5px solid var(--accent);
}
.tl-date{font-family:var(--font-mono);font-size:.74rem;color:var(--accent);}
.timeline-card h3{font-family:var(--font-display);font-weight:600;font-size:1.08rem;margin:.4rem 0 .5rem;}
.timeline-card p{color:var(--text-dim);line-height:1.65;max-width:640px;font-size:.95rem;}

/* =========================================================
   CARDS / GRID
========================================================= */
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.3rem;}

.card{
  padding:1.6rem;border-radius:var(--radius);
  background:var(--surface);border:1px solid var(--border);
  transition:border-color .25s ease,transform .25s ease;
}
.card:hover{border-color:rgba(var(--accent-rgb),.4);transform:translateY(-3px);}

/* --- project tiers --- */
.tier{margin-bottom:3rem;}
.tier:last-child{margin-bottom:0;}
.tier-head{
  display:flex;align-items:baseline;gap:.9rem;
  margin-bottom:1.3rem;padding-bottom:.8rem;
  border-bottom:1px solid var(--border);
}
.tier-head .tier-index{font-family:var(--font-mono);font-size:.75rem;color:var(--accent);}
.tier-head h3{font-family:var(--font-display);font-weight:600;font-size:1.15rem;}
.tier-head .tier-note{font-size:.84rem;color:var(--text-faint);margin-left:auto;text-align:right;max-width:340px;}

.project-card{position:relative;}
.card-mark{
  display:inline-flex;align-items:center;justify-content:center;
  font-family:var(--font-mono);font-weight:600;font-size:.68rem;
  padding:.3rem .5rem;border-radius:6px;
  background:var(--surface-tint);color:var(--accent);
  margin-bottom:.9rem;letter-spacing:.03em;
}
.card-mark.risk{color:var(--accent-3);}
.card-mark.alt{color:var(--accent-2);}

.tag{
  font-family:var(--font-mono);font-size:.66rem;letter-spacing:.06em;
  color:var(--text-faint);
}
.project-card h3{font-family:var(--font-display);font-weight:600;font-size:1.08rem;margin:.5rem 0 .55rem;}
.project-card p{color:var(--text-dim);font-size:.88rem;line-height:1.6;}
.tech{margin-top:.9rem;font-family:var(--font-mono);font-size:.7rem;color:var(--text-faint);}
.card-link{
  display:inline-block;margin-top:1rem;font-size:.82rem;color:var(--accent);font-weight:600;
  border-bottom:1px solid rgba(var(--accent-rgb),.35);
}

/* =========================================================
   SKILLS
========================================================= */
.skill-card h3{font-family:var(--font-display);font-weight:600;font-size:1rem;margin-bottom:.9rem;}
.chip-row{display:flex;flex-wrap:wrap;gap:.5rem;}
.chip{
  font-family:var(--font-mono);font-size:.74rem;
  padding:.38rem .68rem;border-radius:6px;
  background:var(--surface-tint);border:1px solid var(--border);color:var(--text-dim);
  transition:.2s;
}
.chip:hover{color:var(--accent);border-color:rgba(var(--accent-rgb),.4);}

/* =========================================================
   GITHUB
========================================================= */
.github-cards{display:flex;flex-wrap:wrap;gap:1.3rem;align-items:stretch;}
.gh-loading,.gh-empty{
  color:var(--text-faint);font-family:var(--font-mono);font-size:.85rem;
  padding:1.4rem;
}
.gh-card{
  flex:1;min-width:260px;
  border-radius:var(--radius);border:1px solid var(--border);
  background:var(--surface);box-shadow:var(--shadow);
  padding:1.4rem 1.5rem;
}
.gh-card h3{
  font-family:var(--font-display);font-weight:600;font-size:.95rem;
  margin-bottom:1rem;color:var(--text);
}
.gh-stat-grid{display:flex;gap:1.6rem;flex-wrap:wrap;}
.gh-stat-item{display:flex;flex-direction:column;gap:.2rem;}
.gh-stat-item .gh-num{font-family:var(--font-display);font-weight:600;font-size:1.5rem;color:var(--text);}
.gh-stat-item .gh-label{font-family:var(--font-mono);font-size:.68rem;letter-spacing:.05em;color:var(--text-faint);}

.gh-lang-bars{display:flex;flex-direction:column;gap:.6rem;}
.gh-lang-row{display:grid;grid-template-columns:88px 1fr 34px;align-items:center;gap:.6rem;}
.gh-lang-name{font-size:.78rem;color:var(--text-dim);font-family:var(--font-mono);}
.gh-lang-track{height:6px;border-radius:4px;background:var(--surface-tint);overflow:hidden;}
.gh-lang-fill{height:100%;background:var(--accent);border-radius:4px;}
.gh-lang-pct{font-size:.75rem;color:var(--text-faint);text-align:right;font-family:var(--font-mono);}

.gh-activity-list{display:flex;flex-direction:column;gap:.7rem;}
.gh-activity-list li{
  display:flex;justify-content:space-between;align-items:baseline;gap:.8rem;
  font-size:.85rem;color:var(--text-dim);line-height:1.5;
  border-bottom:1px solid var(--border);padding-bottom:.6rem;
}
.gh-activity-list li:last-child{border-bottom:none;padding-bottom:0;}
.gh-activity-list li strong{color:var(--text);font-weight:600;}
.gh-time{flex-shrink:0;font-family:var(--font-mono);font-size:.72rem;color:var(--text-faint);}

.gh-error{
  flex:1;display:flex;flex-direction:column;gap:.9rem;align-items:flex-start;
}
.gh-error p{color:var(--text-dim);font-size:.9rem;}

/* =========================================================
   EDUCATION / CERTS
========================================================= */
.edu-card h3{font-family:var(--font-display);font-weight:600;font-size:1.08rem;margin-bottom:.7rem;}
.edu-sub{color:var(--text-dim);font-size:.85rem;margin-bottom:.2rem !important;}
.edu-card p{color:var(--text-dim);font-size:.9rem;line-height:1.6;}

.cert-list{display:flex;flex-direction:column;gap:.85rem;}
.cert-list li{
  padding:1rem 1.2rem;border-left:2px solid var(--accent);
  background:var(--surface-tint);border-radius:0 8px 8px 0;
  font-size:.9rem;color:var(--text-dim);line-height:1.55;
}
.cert-list strong{color:var(--text);}

/* =========================================================
   CONTACT
========================================================= */
.contact-sub{color:var(--text-dim);margin-top:.7rem;}
.contact-grid{margin-top:2.3rem;}
.contact{
  display:flex;flex-direction:column;gap:.25rem;
  text-align:center;align-items:center;
}
.contact-icon{
  width:38px;height:38px;border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  background:var(--surface-tint);color:var(--accent);border:1px solid var(--border);
  font-family:var(--font-mono);font-weight:600;font-size:.85rem;margin-bottom:.5rem;
}
.contact span:nth-child(2){font-family:var(--font-display);font-weight:600;}
.contact-detail{font-size:.78rem;color:var(--text-faint);font-family:var(--font-mono);}

/* =========================================================
   FOOTER
========================================================= */
.footer{
  padding:2.3rem 6%;text-align:center;
  color:var(--text-faint);font-size:.83rem;
  border-top:1px solid var(--border);
  position:relative;z-index:1;
}

/* =========================================================
   REVEAL ON SCROLL — short, restrained
========================================================= */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .5s ease,transform .5s ease;}
.reveal.in{opacity:1;transform:translateY(0);}

/* =========================================================
   RESPONSIVE NAV
========================================================= */
@media (max-width:860px){
  .nav-burger{display:flex;}
  .nav-right{
    position:fixed;top:63px;right:0;left:0;
    background:var(--bg-alt);border-bottom:1px solid var(--border);
    flex-direction:column;align-items:flex-start;
    padding:1.2rem 6%;gap:1rem;
    transform:translateY(-130%);opacity:0;
    transition:.3s;pointer-events:none;
  }
  .nav-right.open{transform:translateY(0);opacity:1;pointer-events:auto;}
}

@media (max-width:600px){
  .section{padding:4rem 6%;}
  .tier-head{flex-wrap:wrap;}
  .tier-head .tier-note{margin-left:0;text-align:left;}
}