:root{
  --bg:#0a192f;       /* dark navy */
  --card:#071120;
  --text:#e6eef8;
  --muted:#9fb3cc;
  --accent:#00aaff;
  --white:#ffffff;
  --container:1100px;
  --radius:12px;
  --glass: rgba(255,255,255,0.03);
  font-family: "Poppins", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
}

/* Basic reset */
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  background:linear-gradient(180deg,var(--bg),#041022 180%);
  color:var(--text);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  line-height:1.6;
}

/* Containers */
.container{
  max-width:var(--container);
  margin:0 auto;
  padding:0 1.25rem;
}

/* Header */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  backdrop-filter: blur(6px);
  border-bottom:1px solid rgba(255,255,255,0.03);
  background: linear-gradient(180deg, rgba(10,25,47,0.6), rgba(10,25,47,0.4));
}
.header-inner{
  display:flex;
  gap:1rem;
  align-items:center;
  justify-content:space-between;
  padding:0.9rem 0;
}
.brand{
  display:flex;
  gap:0.5rem;
  align-items:center;
  text-decoration:none;
  color:var(--text);
  font-weight:600;
}
.brand-logo{
  font-weight:700;
  color:var(--accent);
  font-size:1.25rem;
}

/* Nav */
.nav ul{
  display:flex;
  gap:1rem;
  list-style:none;
  margin:0;
  padding:0;
}
.nav a{
  color:var(--muted);
  text-decoration:none;
  padding:0.4rem 0.6rem;
  border-radius:8px;
  transition:all .15s;
}
.nav a:hover{color:var(--white); background:var(--glass);}

/* Nav toggle (mobile) */
.nav-toggle{
  display:none;
  background:none;
  border:0;
  cursor:pointer;
  padding:0.4rem;
}
.hamburger{
  width:22px;
  height:2px;
  background:var(--text);
  display:block;
  position:relative;
}
.hamburger::before,.hamburger::after{
  content:""; position:absolute; left:0; right:0; height:2px; background:var(--text);
}
.hamburger::before{top:-7px}
.hamburger::after{top:7px}

/* Hero */
.hero{
  padding:3.5rem 0;
}
.hero-grid{
  display:grid;
  grid-template-columns: 1fr 420px;
  gap:2rem;
  align-items:center;
}
.hero-text h1{
  margin:0 0 0.5rem 0;
  font-size:2.1rem;
  line-height:1.05;
}
.accent{color:var(--accent);}
.hero-text p{color:var(--muted); margin-top:0.5rem;}
.hero-ctas{margin-top:1.2rem; display:flex; gap:0.75rem;}
.btn{
  display:inline-flex;
  align-items:center;
  gap:0.6rem;
  padding:0.6rem 0.9rem;
  border-radius:10px;
  text-decoration:none;
  cursor:pointer;
  border:1px solid transparent;
  font-weight:600;
}
.btn.primary{ background:linear-gradient(90deg,var(--accent),#00d1ff); color:#021018; box-shadow:0 6px 18px rgba(0,170,255,0.08);}
.btn.outline{ background:transparent; border:1px solid rgba(255,255,255,0.06); color:var(--text);}

.hero-stats{display:flex; gap:1.25rem; margin-top:1.25rem; list-style:none; padding:0; color:var(--muted)}
.hero-card .code-card{
  background:linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  border-radius:12px;
  padding:1rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, "Roboto Mono", monospace;
  color:#bfefff;
  box-shadow: 0 10px 30px rgba(2,6,23,0.6);
}

/* Sections */
.section{padding:3rem 0;}
.section-head h2{margin:0 0 0.2rem 0; font-size:1.5rem;}
.section-head p{margin:0; color:var(--muted)}

/* About */
.about-grid{display:grid; grid-template-columns:1fr 340px; gap:2rem; margin-top:1.25rem}
.profile-card{background:var(--card); border-radius:12px; padding:1rem; text-align:center; box-shadow:0 10px 30px rgba(0,0,0,0.5)}
.profile-card img{width:100%; height:220px; object-fit:cover; border-radius:10px; display:block}
.profile-meta{margin-top:0.75rem}
.skills-list{margin-top:1rem; color:var(--muted)}

/* Projects */
.projects-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:1.25rem; margin-top:1rem}
.project-card{background:var(--card); border-radius:12px; overflow:hidden; display:flex; flex-direction:column; min-height:260px;}
.project-thumb img{width:100%; height:140px; object-fit:cover; display:block}
.project-body{padding:0.85rem 1rem; display:flex; flex-direction:column; gap:0.55rem; margin-top:auto}
.project-links a{color:var(--accent); text-decoration:none; margin-right:0.6rem; font-weight:600}

/* Blog */
.blog-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:1rem; margin-top:1rem}
.blog-card{background:var(--card); padding:1rem; border-radius:10px; color:var(--muted)}

/* Contact */
.contact-grid{display:grid; grid-template-columns:380px 1fr; gap:1.25rem; margin-top:1rem}
.contact-card{background:var(--card); padding:1rem; border-radius:10px}
.contact-form label{display:block; margin-bottom:0.8rem}
.contact-form input, .contact-form textarea{
  width:100%; padding:0.6rem 0.75rem; border-radius:8px; border:1px solid rgba(255,255,255,0.04); background:transparent; color:var(--text)
}
.form-actions{display:flex; gap:0.5rem; margin-top:0.5rem}
.form-msg{margin-top:0.75rem; color:var(--muted); font-size:0.95rem}

/* Footer */
.site-footer{padding:1.5rem 0; text-align:center; color:var(--muted); border-top:1px solid rgba(255,255,255,0.02); margin-top:2rem}

/* Responsive */
@media (max-width:1000px){
  .hero-grid{grid-template-columns:1fr}
  .about-grid{grid-template-columns:1fr}
  .projects-grid{grid-template-columns:repeat(2,1fr)}
  .blog-grid{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:1fr}
}

@media (max-width:700px){
  .nav{display:none}
  .nav-toggle{display:block}
  .projects-grid{grid-template-columns:1fr}
  .blog-grid{grid-template-columns:1fr}
  .header-inner{padding:0.6rem 0}
}

/* Mobile nav visible state */
.nav.open{display:block; position:absolute; left:0; right:0; top:64px; background:linear-gradient(180deg, rgba(10,25,47,0.9), rgba(10,25,47,0.95)); padding:1rem; border-bottom:1px solid rgba(255,255,255,0.03)}
.nav.open ul{flex-direction:column; gap:0.6rem}