/* Base styles */
:root{
  --bg:#0b1220; /* dark navy */
  --bg-2:#0f172a; /* slightly lighter */
  --text:#e5e7eb;
  --muted:#94a3b8;
  --primary:#22d3ee; /* cyan */
  --accent:#a78bfa; /* purple */
  --card:#111827;
  --chip:#0b2530;
  --border:rgba(255,255,255,.08);
}

:root.light{
  --bg:#ffffff;
  --bg-2:#f8fafc;
  --text:#0f172a;
  --muted:#475569;
  --primary:#0ea5e9;
  --accent:#7c3aed;
  --card:#ffffff;
  --chip:#e2f3f9;
  --border:rgba(2,6,23,.1);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,sans-serif;
  color:var(--text);
  background:radial-gradient(1000px 500px at -10% -10%, rgba(34,211,238,.08), transparent 50%),
             radial-gradient(1000px 600px at 110% 0%, rgba(167,139,250,.08), transparent 60%),
             var(--bg);
}

h1,h2,h3{font-family:Poppins,Inter,sans-serif;margin:0 0 .6rem 0}
h1{font-size:clamp(2rem,4vw,3rem);font-weight:800}
h2{font-size:clamp(1.5rem,2.6vw,2rem);font-weight:700}
h3{font-size:1.1rem;font-weight:700}
p{line-height:1.7;color:var(--text)}
a{color:var(--primary);text-decoration:none}

.container{width:min(1100px,90%);margin-inline:auto}
.section{padding:72px 0; scroll-margin-top:100px}

/* Header & Nav */
.site-header{position:static;background:none}
.nav{position:fixed;top:0;left:0;right:0;z-index:100;background:linear-gradient(180deg,rgba(2,6,23,.85),rgba(2,6,23,.35));backdrop-filter:saturate(1.2) blur(10px);border-bottom:1px solid var(--border);padding:16px 0 12px 0;gap:12px}
.brand{font-weight:800;letter-spacing:.3px;color:var(--text)}
.brand span{color:var(--primary)}
.nav-links{list-style:none;display:flex;gap:12px;margin:0;padding:0}
.nav-links a{color:var(--muted);font-weight:500;padding:8px 10px;border-radius:10px}
.nav-links a:hover{background:var(--chip);color:var(--text)}
.nav-toggle{display:none;background:none;border:1px solid var(--border);color:var(--text);padding:8px 10px;border-radius:10px}
.theme-toggle{background:none;border:1px solid var(--border);color:var(--text);padding:8px 10px;border-radius:10px}
.nav-social{display:flex;gap:10px}
.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:10px;border:1px solid var(--border);color:var(--text);background:var(--chip)}
.icon-btn:hover{background:var(--card);color:var(--primary)}

@media (max-width: 1024px){
  .nav-toggle{display:inline-flex}
  .nav-links{position:absolute;right:5%;top:64px;background:var(--card);border:1px solid var(--border);padding:10px;border-radius:14px;flex-direction:column;display:none;box-shadow:0 10px 30px rgba(0,0,0,.2)}
  .nav-links.open{display:flex}
}

/* Nav single-line layout */
.nav{display:flex;align-items:center;justify-content:space-between;flex-wrap:nowrap}
.brand{flex:0 0 auto}
.nav-links{flex:1 1 auto;display:flex;align-items:center;justify-content:center;flex-wrap:nowrap;gap:12px}
.nav-links li{white-space:nowrap}
.nav-actions{flex:0 0 auto;display:flex;align-items:center;gap:10px}
.theme-toggle{width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center}

/* Prevent nav bar scrollbars */
.nav{overflow:visible}
.nav-links{scrollbar-width:none; -ms-overflow-style:none}
.nav-links::-webkit-scrollbar{width:0;height:0}

@media (max-width: 860px){
  .nav-toggle{display:inline-flex}
  .nav{gap:10px}
  .nav-actions{margin-left:auto}
  .nav-links{position:absolute;right:5%;top:64px;background:var(--card);border:1px solid var(--border);padding:10px;border-radius:14px;flex-direction:column;display:none;box-shadow:0 10px 30px rgba(0,0,0,.2)}
  .nav-links.open{display:flex}
}

/* Hero */
.hero{display:grid;grid-template-columns:1.2fr .8fr;gap:36px;align-items:center;padding:40px 0 20px}
.hero .subtitle{color:var(--muted)}
.chip{display:inline-flex;align-items:center;gap:8px;background:var(--chip);border:1px solid var(--border);color:var(--text);padding:8px 12px;border-radius:999px;margin:8px 8px 0 0;font-size:.95rem}
.hero-visual{position:relative;height:220px}
.orb{position:absolute;filter:blur(20px);opacity:.8}
.orb-a{width:180px;height:180px;border-radius:50%;background:radial-gradient(circle at 30% 30%, #22d3ee, transparent 60%);left:10%;top:10%}
.orb-b{width:220px;height:220px;border-radius:50%;background:radial-gradient(circle at 60% 40%, #a78bfa, transparent 60%);right:0;top:20%}
.orb-c{width:120px;height:120px;border-radius:50%;background:radial-gradient(circle at 40% 50%, #22d3ee, transparent 60%);left:35%;bottom:-10%}

@media (max-width: 860px){
  .hero{grid-template-columns:1fr}
  .hero-visual{order:-1;height:160px}
}

/* Timeline */
.timeline{position:relative;margin-left:12px;padding-left:24px;border-left:2px dashed var(--border)}
.timeline-item{position:relative;margin:24px 0;padding-left:12px}
.timeline-dot{position:absolute;left:-7px;top:6px;width:12px;height:12px;background:linear-gradient(135deg,var(--primary),var(--accent));border-radius:50%;box-shadow:0 0 0 4px rgba(34,211,238,.15)}
.item-header{display:flex;flex-wrap:wrap;gap:8px;align-items:baseline}
.item-header .at{color:var(--primary)}
.item-header .meta{color:var(--muted);font-size:.95rem}
.timeline-content ul{margin:8px 0 0 0;padding-left:18px}
.timeline-content li{margin:6px 0}

/* Cards / Grid */
.grid{display:grid;gap:18px}
.projects-grid{grid-template-columns:repeat(3,1fr)}
@media (max-width: 1000px){.projects-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width: 640px){.projects-grid{grid-template-columns:1fr}}

.card{background:linear-gradient(180deg, rgba(255,255,255,.02), rgba(255,255,255,0));border:1px solid var(--border);border-radius:16px;overflow:hidden}
.card-body{padding:18px 18px 0 18px}
.card-footer{display:flex;justify-content:flex-end;padding:12px 18px 18px 18px}
.btn{display:inline-flex;align-items:center;gap:8px;background:linear-gradient(135deg,var(--primary),var(--accent));color:#0b1220;padding:10px 14px;border-radius:12px;font-weight:700}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.tag{display:inline-flex;align-items:center;gap:6px;background:var(--chip);border:1px solid var(--border);padding:6px 10px;border-radius:999px;color:var(--muted);font-size:.9rem}

/* Education */
.edu-list{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.edu-list li{display:flex;gap:10px;align-items:flex-start;background:var(--card);border:1px solid var(--border);padding:12px;border-radius:12px}
.edu-list i{color:var(--accent);margin-top:3px}

/* Skills */
.skills{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.skill-block{background:var(--card);border:1px solid var(--border);padding:16px;border-radius:14px}
.pill-list{display:flex;flex-wrap:wrap;gap:10px;list-style:none;margin:8px 0 0 0;padding:0}
.pill-list li{background:var(--chip);border:1px solid var(--border);padding:6px 10px;border-radius:999px}
.icon-list{list-style:none;margin:8px 0 0 0;padding:0;display:grid;gap:8px}
.icon-list li{display:flex;align-items:center;gap:10px}
@media (max-width: 900px){.skills{grid-template-columns:1fr}}

/* Hobbies */
.hobby-list{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:12px}
.hobby-list li{display:inline-flex;align-items:center;gap:8px;background:var(--chip);border:1px solid var(--border);padding:8px 12px;border-radius:999px;color:var(--muted)}

/* Footer */
.site-footer{padding:36px 0;border-top:1px solid var(--border);margin-top:40px;background:linear-gradient(0deg,rgba(2,6,23,.5),rgba(2,6,23,0))}
.footer-content{display:flex;align-items:center;justify-content:space-between;gap:16px}
.footer-content .socials{display:flex;gap:12px}
.footer-content .socials a{color:var(--muted);border:1px solid var(--border);padding:8px;border-radius:10px}
.footer-content .socials a:hover{background:var(--chip);color:var(--text)}

/* Utilities */
.section h2{display:flex;align-items:center;gap:10px;margin-bottom:12px}

/* Slightly increase nav bar padding */
.nav{padding:16px 0}

/* Add a little padding to the main hero title */
.hero h1{padding-top:8px}

/* Light mode: make nav text lighter for readability over dark nav background */
.light .brand{color:#f1f5f9}
.light .nav-links a{color:#e2e8f0}
.light .nav-links a:hover{color:#ffffff}
.light .icon-btn,
.light .theme-toggle{color:#e2e8f0;border-color:rgba(255,255,255,.2)}

/* Adaptive nav background in light mode for contrast */
.light .nav{background:linear-gradient(180deg,rgba(15,23,42,.85),rgba(15,23,42,.35))}
.light .nav-links a:hover{background:rgba(255,255,255,.06)}
.light .chip{background:#e9f5fb;border-color:rgba(2,6,23,.1);color:#0f172a}

/* Light mode: darker social icons and toggle for better theme contrast */
.light .nav-social .icon-btn,
.light .theme-toggle{
  background:#ffffff;
  color:#0f172a;
  border-color:rgba(2,6,23,.12);
}
.light .nav-social .icon-btn:hover{background:#f1f5f9;color:#0f172a}

/* Move the main title a bit down */
.hero h1{margin-top:12px}