:root{
  --bg:#0f1113;
  --panel:#111316;
  --muted:#98a0aa;
  --accent:#2FA4FF;
  --glass: rgba(255,255,255,0.03);
  --card:#0f1518;
  --radius:14px;
  --text:#dbe4ea;
  --shadow: 0 6px 18px rgba(2,6,8,0.6);
  --glass-2: rgba(255,255,255,0.02);
}

/* LIGHT THEME OVERRIDES */
:root.light {
  --bg: #f7f9fb;
  --panel: #ffffff;
  --muted: #59646f;
  --accent:#0b76ff;
  --glass: rgba(0,0,0,0.03);
  --card:#ffffff;
  --text:#07131a;
  --shadow: 0 8px 28px rgba(2,6,8,0.06);
  --glass-2: rgba(2,6,8,0.02);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial;
  background: linear-gradient(180deg, var(--bg) 0%, #0b0c0d 100%);
  color:var(--text);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  line-height:1.5;
}

/* container */
.container{max-width:1180px;margin:0 auto;padding:40px 24px}

/* NAV */
.nav-root{
  position:fixed;
  width: 100%;
  top:0;
  z-index:60;
  background:linear-gradient(180deg, rgba(0,0,0,0.45), transparent);
  border-bottom:1px solid rgba(255,255,255,0.02);
  backdrop-filter: blur(6px);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;max-width:1180px;margin:0 auto;padding:14px 24px}
.brand{
  font-weight:800;font-size:20px;padding:8px 12px;border-radius:10px;background:var(--panel);box-shadow:var(--shadow);
}
/* .brand a{text-decoration: none; color: black;} */
.main-nav a{
  margin:0 12px;color:var(--text);text-decoration:none;font-weight:600;opacity:0.9;
}
.main-nav a:hover{opacity:1}
.nav-actions{display:flex;gap:8px;align-items:center}
.icon-btn{
  background:transparent;border:0;color:var(--text);cursor:pointer;padding:6px;border-radius:8px;opacity:0.9;
}
.icon-btn:hover{opacity:1}

/* HERO */
.hero{
  min-height:520px;
  display:flex;align-items:center;position:relative;color:var(--text);
  overflow:hidden;
}
.hero-overlay{
  position:absolute;inset:0;background:
  radial-gradient(ellipse at 10% 20%, rgba(47,164,255,0.06) 0%, transparent 20%),
  radial-gradient(ellipse at 80% 80%, rgba(0,200,180,0.04) 0%, transparent 10%),
  linear-gradient(180deg, rgba(0,0,0,0.35), rgba(0,0,0,0.6));
  z-index:0;
}
.hero-content{position:relative;z-index:2;text-align:center;padding:80px 24px}
.hero-title{font-size:86px;margin:0 0 8px;letter-spacing:-1px;font-weight:900}
.hero-sub{font-size:22px;margin:0 0 18px;color:var(--muted);font-weight:500}
.hero-desc{max-width:820px;margin:0 auto 30px;color:var(--muted);font-size:18px}
.hero-ctas{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:6px}
.btn{display:inline-flex;align-items:center;gap:10px;padding:12px 20px;border-radius:10px;text-decoration:none;font-weight:600}
.btn.primary{background:linear-gradient(180deg,var(--accent), #2b9bff);color:white;box-shadow:0 8px 20px rgba(47,164,255,0.12)}
.btn.ghost{background:transparent;border:1px solid rgba(255,255,255,0.06);color:var(--text)}

/* SECTION STYLES */
.section{padding:64px 0}
.section-dark{background:linear-gradient(180deg, transparent, rgba(0,0,0,0.02))}

/* Section titles */
.section-title{text-align:center;font-size:44px;margin:0 0 6px;font-weight:800}
.section-sub{text-align:center;color:var(--muted);margin-bottom:28px}

/* SKILLS GRID */
.skills-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:20px}
.card{background:var(--panel);border-radius:12px;padding:22px;box-shadow:var(--shadow)}
.skill-card .card-title{font-weight:700;font-size:20px;margin-bottom:14px}
.tags{display:flex;gap:10px;flex-wrap:wrap}
.tags span{background:var(--glass-2);padding:8px 12px;border-radius:10px;font-weight:600;color:var(--muted)}

.card-title i{
margin: 10px;
color: #2b9bff;
font-size: 30px;
}

/* PROJECTS */
.project-filters{display:flex;gap:12px;justify-content:center;margin:18px 0 28px}
.filter-btn{padding:10px 16px;border-radius:9px;background:transparent;border:1px solid rgba(255,255,255,0.04);cursor:pointer;font-weight:700}
.filter-btn.active{background:var(--accent);color:#fff;box-shadow:0 8px 20px rgba(47,164,255,0.12)}
.projects-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.project-card{background:var(--panel);border-radius:14px;overflow:hidden;display:flex;flex-direction:column;min-height:320px;transition:transform .22s}
.project-card:hover{transform:translateY(-6px)}
.project-media{height:160px;background-size:cover;background-position:center}
.project-body{padding:18px}
.project-body h3{margin:0 0 8px}
.project-body p{margin:0;color:var(--muted)}

/* TIMELINE */
.timeline{margin-top:26px;border-left:1px solid rgba(255,255,255,0.03);padding-left:28px}
.timeline-item{position:relative;margin:26px 0;padding-left:20px}
.timeline-marker{position:absolute;left:-11px;top:6px;width:14px;height:14px;border-radius:50%;background:var(--accent);box-shadow:0 6px 16px rgba(47,164,255,0.12)}
.timeline-content h3{margin:0 0 8px}
.muted{color:var(--muted);font-weight:600;font-size:14px}
.timeline-content ul{margin:8px 0 0;padding-left:18px;color:var(--muted)}

/* ABOUT */
.about-grid{display:grid;grid-template-columns:1fr 360px;gap:30px;align-items:start}
.about-card{display:flex;gap:22px;align-items:flex-start;margin-top:14px}
.avatar{width:180px;height:180px;border-radius:50%;object-fit:cover;border:6px solid var(--panel);box-shadow:var(--shadow)}
.about-text p{color:var(--muted)}
.stats-grid{display:flex;gap:18px;margin-top:22px}
.stat-card{background:var(--panel);padding:20px;border-radius:12px;text-align:center;flex:1}
.stat-num{font-size:28px;font-weight:800}
.stat-label{color:var(--muted);margin-top:6px}

/* CONTACT / FOOTER */
.footer{padding:36px 0;background:linear-gradient(180deg, transparent, rgba(0,0,0,0.02));margin-top:40px}
.footer-inner{display:flex;justify-content:space-between;align-items:center;gap:12px}
.socials a{color:var(--muted);margin-left:12px;text-decoration:none;font-weight:700}
.copyright{margin-top:12px;color:var(--muted);font-size:13px;text-align:center}

/* RESPONSIVE */
@media (max-width:1024px){
  .skills-grid{grid-template-columns:repeat(2,1fr)}
  .projects-grid{grid-template-columns:repeat(2,1fr)}
  .hero-title{font-size:56px}
  .about-grid{grid-template-columns:1fr; }
  .main-nav{display:none}
}
@media (max-width:640px){
  .skills-grid{grid-template-columns:1fr}
  .projects-grid{grid-template-columns:1fr}
  .hero-title{font-size:42px}
  .hero{min-height:420px}
  .nav-inner{padding:10px 14px}
  .brand{font-size:18px}
}