*,*::before,*::after{
  margin:0;
  padding:0;
  box-sizing:border-box
}

/* original variables */
:root{
  --bg:#020810;
  --surface:#0A1628;
  --surface2:#0D1F35;
  --border:#1A2F4A;
  --cyan:#22D3EE;
  --green:#10B981;
  --cyan-dim:rgba(34,211,238,0.08);
  --green-dim:rgba(16,185,129,0.08);
  --text:#F0F9FF;
  --muted:#4B7A9B;
  --light:#8BAFC9;

  /* theme aliases */
  --bg-primary: var(--bg);
  --text-primary: var(--text);
  --border-primary: var(--border);
}

/* light mode overrides (colors only) */
.light-mode{
  --bg-primary:#f8fafc;
  --text-primary:#0f172a;
  --border-primary:#d0d7e2;
  --cyan:#0891b2;
  --green:#10B981;
  --cyan-dim:rgba(8,145,178,0.08);
  --green-dim:rgba(16,185,129,0.08);
}

html{scroll-behavior:smooth}

body{
  background:var(--bg-primary);
  color:var(--text-primary);
  font-family:'DM Sans',sans-serif;
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden
}

body::before{
  content:'';
  position:fixed;
  inset:0;
  background-image:
    linear-gradient(rgba(34,211,238,0.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(34,211,238,0.03) 1px,transparent 1px);
  background-size:48px 48px;
  pointer-events:none;
  z-index:0
}

::-webkit-scrollbar{width:4px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:var(--cyan);border-radius:2px}

nav{
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:100;
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:18px 64px;
  background:rgba(2,8,16,0.9);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--border-primary)
}

.nav-logo{
  font-family:'Space Mono',monospace;
  font-weight:700;
  font-size:16px;
  color:var(--text)
}
.nav-logo span{color:var(--cyan)}

.nav-logo img{
  height:50px;
  width:auto
}

.nav-links{
  display:flex;
  gap:32px;
  list-style:none;
  align-items:center
}

.nav-links a{
  color:var(--muted);
  text-decoration:none;
  font-size:12px;
  font-weight:500;
  letter-spacing:1px;
  text-transform:uppercase;
  transition:color 0.2s
}
.nav-links a:hover{color:var(--cyan)}

.nav-theme-toggle{
  margin-left:16px
}

#theme-toggle{
  background:none;
  border:2px solid var(--border-primary);
  border-radius:50%;
  color:var(--text-primary);
  cursor:pointer;
  font-size:1.2rem;
  padding:0.25rem;
  transition:all 0.3s ease;
  width:36px;
  height:36px;
  display:flex;
  align-items:center;
  justify-content:center
}
#theme-toggle:hover{
  background-color:rgba(15,23,42,0.6);
  border-color:var(--cyan);
  transform:scale(1.1)
}

.hero{
  min-height:100vh;
  display:flex;
  align-items:center;
  padding:120px 64px 80px;
  position:relative;
  z-index:1
}
.hero-inner{
  max-width:1100px;
  width:100%;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:80px;
  align-items:center
}
.hero-right{
  display:flex;
  flex-direction:column;
  align-items:center
}
.photo-wrap{
  position:relative;
  display:inline-block;
  margin-bottom:0
}
.photo-corner{
  position:absolute;
  width:20px;
  height:20px;
  border-color:var(--cyan);
  border-style:solid
}
.photo-corner.tl{top:-6px;left:-6px;border-width:2px 0 0 2px}
.photo-corner.tr{top:-6px;right:-6px;border-width:2px 2px 0 0}
.photo-corner.bl{bottom:-6px;left:-6px;border-width:0 0 2px 2px}
.photo-corner.br{bottom:-6px;right:-6px;border-width:0 2px 2px 0}
.photo-frame{
  width:340px;
  height:400px;
  border-radius:14px;
  overflow:hidden;
  border:2px solid var(--border);
  box-shadow:0 0 40px rgba(34,211,238,0.12)
}
.photo-frame img{
  width:100%;
  height:100%;
  object-fit:cover;
  object-position:top center;
  display:block
}
.hero-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:var(--cyan-dim);
  border:1px solid rgba(34,211,238,0.2);
  color:var(--cyan);
  font-size:11px;
  font-weight:600;
  letter-spacing:2px;
  text-transform:uppercase;
  padding:6px 14px;
  border-radius:100px;
  margin-bottom:28px;
  font-family:'Space Mono',monospace
}
.hero-tag::before{
  content:'';
  width:6px;
  height:6px;
  background:var(--blue);
  border-radius:50%;
  animation:pulse 2s infinite
}
@keyframes pulse{
  0%,100%{opacity:1;box-shadow:0 0 0 0 rgba(16,185,129,0.4)}
  50%{opacity:0.7;box-shadow:0 0 0 6px rgba(16,185,129,0)}
}
.hero-name{
  font-family:'Syne',sans-serif;
  font-weight:800;
  font-size:clamp(40px,5vw,68px);
  line-height:0.95;
  letter-spacing:-3px;
  margin-bottom:8px
}
.hero-name .cyan{color:var(--cyan)}
.hero-name .green{color:var(--green)}
.hero-title{
  font-family:'Space Mono',monospace;
  font-size:12px;
  color:var(--muted);
  letter-spacing:2px;
  text-transform:uppercase;
  margin-bottom:24px
}
.hero-bio{
  font-size:15px;
  font-weight:300;
  color:var(--light);
  line-height:1.8;
  margin-bottom:32px
}
.hero-bio strong{
  color:var(--green);  
  font-weight:500;
}
.hero-actions{
  display:flex;
  gap:12px;
  flex-wrap:wrap
}
.btn-primary{
  background:var(--cyan);
  color:#020810;
  font-family:'DM Sans',sans-serif;
  font-weight:700;
  font-size:13px;
  padding:12px 24px;
  border-radius:6px;
  text-decoration:none;
  letter-spacing:0.5px;
  text-transform:uppercase;
  transition:all 0.2s
}
.btn-primary:hover{
  opacity:0.88;
  transform:translateY(-2px);
  box-shadow:0 8px 24px rgba(34,211,238,0.25)
}
.btn-outline{
  background:transparent;
  color:var(--green);
  font-family:'DM Sans',sans-serif;
  font-weight:600;
  font-size:13px;
  padding:12px 24px;
  border-radius:6px;
  border:1px solid var(--green);
  text-decoration:none;
  letter-spacing:0.5px;
  text-transform:uppercase;
  transition:all 0.2s
}
.btn-outline:hover{
  background:var(--green-dim);
  transform:translateY(-2px)
}
.hero-stats{
  display:flex;
  gap:36px;
  margin-top:48px;
  padding-top:32px;
  border-top:1px solid var(--border);
  flex-wrap:wrap
}
.stat-num{
  font-family:'Space Mono',monospace;
  font-weight:700;
  font-size:28px;
  color:var(--cyan);
  line-height:1
}
.stat-label{
  font-size:11px;
  color:var(--muted);
  margin-top:4px
}
.page-section{
  position:relative;
  z-index:1;
  padding:80px 64px;
  max-width:1200px;
  margin:0 auto
}
.full-divider{
  border:none;
  border-top:1px solid var(--border);
  margin:0 64px;
  position:relative;
  z-index:1
}
.section-label{
  font-family:'Space Mono',monospace;
  font-size:10px;
  font-weight:700;
  letter-spacing:3px;
  text-transform:uppercase;
  color:var(--cyan);
  margin-bottom:12px
}
.section-title{
  font-family:'Syne',sans-serif;
  font-weight:700;
  font-size:clamp(24px,4vw,38px);
  letter-spacing:-1px;
  line-height:1.1;
  margin-bottom:40px
}
.skills-block{margin-bottom:32px}
.skill-cat{
  font-family:'Space Mono',monospace;
  font-size:10px;
  letter-spacing:2px;
  text-transform:uppercase;
  color:var(--green);
  margin-bottom:14px;
  font-weight:700
}
.skills-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px
}
.skill-chip{
  display:flex;
  align-items:center;
  gap:8px;
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:8px;
  padding:9px 14px;
  font-size:13px;
  font-weight:500;
  color:var(--light);
  transition:all 0.2s;
  cursor:default
}
.skill-chip:hover{
  border-color:var(--cyan);
  color:var(--cyan);
  background:var(--cyan-dim);
  transform:translateY(-2px)
}
.skill-chip img{
  width:16px;
  height:16px;
  object-fit:contain
}
.skill-chip svg{
  width:16px;
  height:16px;
  flex-shrink:0
}
.projects-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:18px
}
.project-card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:12px;
  overflow:hidden;
  transition:all 0.3s;
  position:relative
}
.project-card::before{
  content:'';
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:2px;
  background:linear-gradient(90deg,var(--cyan),var(--green));
  transform:scaleX(0);
  transform-origin:left;
  transition:transform 0.3s;
  z-index:1
}
.project-card:hover{
  border-color:rgba(34,211,238,0.35);
  transform:translateY(-4px);
  box-shadow:0 16px 40px rgba(34,211,238,0.07)
}
.project-card:hover::before{transform:scaleX(1)}
.project-card.featured{grid-column:span 2}
.proj-img{
  width:100%;
  height:200px;
  object-fit:cover;
  object-position:top;
  display:block;
  border-bottom:1px solid var(--border)
}
.proj-img.tall{height:260px}
.proj-placeholder{
  height:160px;
  background:var(--surface2);
  border-bottom:1px solid var(--border);
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--muted);
  font-size:12px;
  font-family:'Space Mono',monospace
}
.proj-body{padding:22px}
.proj-tag{
  font-family:'Space Mono',monospace;
  font-size:10px;
  font-weight:700;
  letter-spacing:2px;
  text-transform:uppercase;
  color:var(--cyan);
  margin-bottom:8px;
  display:block
}
.proj-title{
  font-family:'Syne',sans-serif;
  font-weight:700;
  font-size:17px;
  letter-spacing:-0.3px;
  line-height:1.3;
  margin-bottom:8px
}
.proj-desc{
  font-size:13px;
  color:var(--light);
  line-height:1.65;
  margin-bottom:16px
}
.proj-tools{
  display:flex;
  flex-wrap:wrap;
  gap:6px;
  margin-bottom:16px
}
.tool-tag{
  background:var(--surface2);
  border:1px solid var(--border);
  color:var(--muted);
  font-size:11px;
  font-weight:500;
  padding:3px 8px;
  border-radius:4px;
  font-family:'Space Mono',monospace
}
.proj-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--cyan);
  font-size:11px;
  font-weight:600;
  text-decoration:none;
  font-family:'Space Mono',monospace;
  letter-spacing:0.5px;
  text-transform:uppercase;
  transition:all 0.2s
}
.proj-link:hover{
  gap:10px;
  color:var(--green)
}
.certs-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:14px
}
.cert-card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:10px;
  padding:22px;
  text-decoration:none;
  display:block;
  transition:all 0.2s;
  position:relative;
  overflow:hidden
}
.cert-card::before{
  content:'';
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:2px;
  background:linear-gradient(90deg,var(--cyan),var(--green))
}
.cert-card:hover{
  border-color:rgba(34,211,238,0.3);
  transform:translateY(-3px);
  box-shadow:0 12px 32px rgba(34,211,238,0.08)
}
.cert-issuer{
  font-family:'Space Mono',monospace;
  font-size:10px;
  letter-spacing:2px;
  text-transform:uppercase;
  color:var(--green);
  margin-bottom:8px;
  font-weight:700
}
.cert-name{
  font-family:'Syne',sans-serif;
  font-weight:700;
  font-size:15px;
  color:var(--text);
  margin-bottom:12px;
  line-height:1.3
}
.cert-cta{
  font-size:11px;
  color:var(--cyan);
  font-family:'Space Mono',monospace;
  display:flex;
  align-items:center;
  gap:5px
}
.exp-list{
  display:flex;
  flex-direction:column
}
.exp-item{
  display:grid;
  grid-template-columns:180px 1fr;
  gap:28px;
  padding:28px 0;
  border-bottom:1px solid var(--border)
}
.exp-item:first-child{border-top:1px solid var(--border)}
.exp-date{
  font-family:'Space Mono',monospace;
  font-size:12px;
  color:var(--muted);
  padding-top:3px
}
.exp-role{
  font-family:'Syne',sans-serif;
  font-weight:700;
  font-size:17px;
  margin-bottom:3px
}
.exp-company{
  color:var(--cyan);
  font-size:12px;
  font-weight:500;
  margin-bottom:8px;
  font-family:'Space Mono',monospace
}
.exp-desc{
  font-size:13px;
  color:var(--light);
  line-height:1.65
}
.contact-box{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:16px;
  padding:56px;
  text-align:center;
  position:relative;
  overflow:hidden
}
.contact-box::before{
  content:'';
  position:absolute;
  top:-100px;
  left:50%;
  transform:translateX(-50%);
  width:500px;
  height:300px;
  background:radial-gradient(ellipse,rgba(34,211,238,0.06) 0%,transparent 70%);
  pointer-events:none
}
.contact-title{
  font-family:'Syne',sans-serif;
  font-weight:800;
  font-size:clamp(28px,5vw,48px);
  letter-spacing:-2px;
  margin-bottom:12px
}
.contact-title .cyan{color:var(--cyan)}
.contact-sub{
  font-size:14px;
  color:var(--light);
  margin-bottom:36px;
  font-weight:300
}
.social-links{
  display:flex;
  justify-content:center;
  gap:12px;
  flex-wrap:wrap
}
.social-link{
  display:flex;
  align-items:center;
  gap:8px;
  background:var(--surface2);
  border:1px solid var(--border);
  color:var(--light);
  font-size:12px;
  font-weight:500;
  padding:11px 20px;
  border-radius:8px;
  text-decoration:none;
  transition:all 0.2s;
  font-family:'Space Mono',monospace
}
.social-link:hover{
  border-color:var(--cyan);
  color:var(--cyan);
  transform:translateY(-2px)
}
footer{
  text-align:center;
  padding:24px 64px;
  color:var(--muted);
  font-size:11px;
  border-top:1px solid var(--border);
  font-family:'Space Mono',monospace;
  position:relative;
  z-index:1
}
.reveal{
  opacity:0;
  transform:translateY(20px);
  transition:opacity 0.55s ease,transform 0.55s ease
}
.reveal.visible{
  opacity:1;
  transform:translateY(0)
}
@media(max-width:900px){
  nav{padding:16px 24px}
  .nav-links{display:none}
  .hero{padding:100px 24px 60px}
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero-right{order:-1}
  .photo-frame{width:160px;height:200px}
  .page-section{padding:56px 24px}
  .full-divider{margin:0 24px}
  .projects-grid{grid-template-columns:1fr}
  .project-card.featured{grid-column:span 1}
  .certs-grid{grid-template-columns:1fr}
  .exp-item{grid-template-columns:1fr;gap:4px}
  .contact-box{padding:32px 20px}
  footer{padding:20px 24px}
}