:root{
  --bg-dark:#012A4A; /* deep dark */
  --bg-2:#013A63;
  --bg-3:#01497C;
  --accent:#2A6F97;
  --muted:#89C2D9;
  --light:#A9D6E5;
  --card-bg: rgba(255,255,255,0.03);
  --glass: rgba(255,255,255,0.04);

  --max-width:1100px;
  --radius:14px;
  --transition:300ms;
  --ff: 'Poppins', system-ui, -apple-system, 'Segoe UI', Roboto, "Helvetica Neue", Arial;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:var(--ff);
  background: linear-gradient(180deg,var(--bg-3) 0%, var(--bg-2) 40%, rgba(161,210,229,0.04) 100%);
  color:#eaf6fb;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  line-height:1.5;
}

/* container */
.container{
  width:calc(100% - 48px);
  max-width:var(--max-width);
  margin:0 auto;
}

/* header/nav */
.site-header{
  position:sticky;
  top:0;
  z-index:30;
  backdrop-filter: blur(6px);
  background: linear-gradient(180deg, rgba(1,42,74,0.45), rgba(1,42,74,0.15));
  border-bottom:1px solid rgba(255,255,255,0.03);
}

.nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:14px 0;
}

.logo{
  color:white;
  font-weight:700;
  text-decoration:none;
  letter-spacing:0.2px;
  font-size:1.05rem;
}

.nav-links{
  list-style:none;
  display:flex;
  gap:18px;
  margin:0;
  padding:0;
}
.nav-link{
  color:rgba(235,245,250,0.9);
  text-decoration:none;
  font-weight:500;
  padding:8px 10px;
  border-radius:8px;
  transition:var(--transition);
}
.nav-link:hover{ background: rgba(255,255,255,0.03); transform:translateY(-2px);}
.nav-link.active{ background: linear-gradient(90deg, rgba(255,255,255,0.04), rgba(255,255,255,0.02)); box-shadow: 0 6px 14px rgba(0,0,0,0.25); }

/* hero */
.hero-section{
  padding:60px 0 40px;
  min-height:60vh;
  display:flex;
  align-items:center;
}
.hero-grid{
  display:grid;
  grid-template-columns: 1fr 360px;
  gap:28px;
  align-items:center;
}

.hero-content h1{
  font-size:2.2rem;
  margin:0 0 12px 0;
  line-height:1.05;
}
.hero-content .accent{
  color:var(--light);
  background: linear-gradient(90deg, rgba(169,214,229,0.08), rgba(42,111,151,0.12));
  padding:0 6px;
  border-radius:6px;
}

.subtitle{
  margin:8px 0 18px;
  color:rgba(230,245,250,0.9);
  max-width:720px;
}

.btn{
  display:inline-block;
  text-decoration:none;
  padding:10px 14px;
  border-radius:10px;
  font-weight:600;
  transition:all var(--transition) ease;
  cursor:pointer;
}
.btn.primary{
  background: linear-gradient(90deg,var(--accent), var(--bg-2));
  color:white;
  border: none;
}
.btn.primary:hover{ transform: translateY(-3px); box-shadow: 0 8px 18px rgba(2,40,70,0.45); }
.btn.ghost{
  background:transparent;
  color:rgba(230,245,250,0.95);
  border:1px solid rgba(255,255,255,0.06);
}
.btn.outline{ border:1px solid rgba(255,255,255,0.06); background:transparent; color:inherit;}
.btn.small{ padding:8px 10px; font-size:0.9rem; border-radius:8px;}

/* hero card */
.hero-card{
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(0,0,0,0.03));
  border-radius:var(--radius);
  padding:18px;
  box-shadow: 0 6px 22px rgba(0,0,0,0.25);
  border:1px solid rgba(255,255,255,0.03);
}
.card-inner{ color:rgba(235,245,250,0.95); }
.card-title{ font-weight:700; margin-bottom:8px; }
.card-list{ margin:8px 0 12px 0; padding-left:18px; }
.card-tag{ font-size:0.8rem; margin-top:6px; color:var(--muted) }

/* sections */
section{ padding:44px 0; }
h2{ font-size:1.4rem; margin:0 0 12px; color: #e9fbff; }
.muted{ color: rgba(230,245,250,0.85); margin-bottom:16px; }

/* about */
.about-grid{
  display:grid;
  grid-template-columns: 1fr 220px;
  gap:24px;
  align-items:start;
}
.about-text p{ margin:0 0 12px;}
.text-preview{
  overflow:hidden;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
}
.hidden-full{
  margin-top:12px;
  display:none;
  color:rgba(230,245,250,0.95);
}
.about-image{ display:flex; align-items:center; justify-content:center;}
.avatar{
  width:160px;
  height:160px;
  border-radius:12px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-weight:700;
  font-size:2rem;
  background: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.02));
  color:var(--light);
  border:1px solid rgba(255,255,255,0.03);
}

/* projects */
.projects-grid{
  display:grid;
  grid-template-columns: repeat(2, 1fr);
  gap:18px;
  margin-top:18px;
}
.project-card{
  background:var(--card-bg);
  border-radius:12px;
  overflow:hidden;
  transition:transform var(--transition), box-shadow var(--transition);
  border:1px solid rgba(255,255,255,0.03);
}
.project-card a{ color:inherit; text-decoration:none; display:flex; gap:12px; align-items:stretch; padding:12px; height:100%;}
.project-card:hover{ transform: translateY(-6px); box-shadow: 0 12px 30px rgba(2,40,70,0.4);}
.project-media{ width:160px; min-width:120px; display:flex; align-items:center; justify-content:center; background: linear-gradient(180deg,var(--bg-2),var(--accent)); color:white; border-radius:8px; }
.media-placeholder{ padding:18px; font-weight:600; color:rgba(255,255,255,0.95); }
.project-body h3{ margin:0 0 6px 0; }
.short-desc{ margin:0 0 8px; color: rgba(235,245,250,0.95); }
.tag{ background: rgba(255,255,255,0.03); padding:6px 8px; border-radius:8px; font-size:0.8rem; margin-right:6px; }

/* more button */
.projects-more{ margin-top:18px; text-align:center; }

/* footer */
.site-footer{
  margin-top:40px;
  border-top:1px solid rgba(255,255,255,0.03);
  padding:18px 0;
  color:rgba(230,245,250,0.9);
}
.footer-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
}
.footer-icons{ display:flex; gap:12px; align-items:center; }
.icon{ color:var(--light); opacity:0.95; transition: transform var(--transition), color var(--transition);}
.footer-icons a:hover .icon{ transform: translateY(-3px); color:var(--muted); }

/* reveal on scroll */
.reveal{ opacity:0; transform: translateY(18px); transition: all 520ms cubic-bezier(.2,.9,.2,1); }
.reveal.visible{ opacity:1; transform:none; }

/* responsive */
@media (max-width:920px){
  .hero-grid{ grid-template-columns: 1fr; }
  .about-grid{ grid-template-columns: 1fr; }
  .projects-grid{ grid-template-columns: 1fr; }
  .hero-card{ order:2; margin-top:18px;}
}

/* small screens */
@media (max-width:540px){
  .container{ width:calc(100% - 28px); }
  .logo{ font-size:0.98rem;}
  .nav-links{ display:none; }
}