:root{
  --primary:#6366f1;
  --primary-d:#4f46e5;
  --bg:#0b0d17;
  --bg2:#12152400;
  --card:#161a2b;
  --card2:#1c2136;
  --text:#e7e9f3;
  --muted:#9298b3;
  --border:#242a42;
  --radius:14px;
  --max:1120px;
  --shadow:0 10px 30px rgba(0,0,0,.35);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Inter','Hind Siliguri',system-ui,-apple-system,sans-serif;
  background:var(--bg);color:var(--text);line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:var(--max);margin:0 auto;padding:0 20px}
.section{padding:70px 0}
.muted{color:var(--muted)}
.center{text-align:center}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(11,13,23,.82);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{font-weight:800;font-size:1.15rem;letter-spacing:-.02em}
.brand span{color:var(--primary)}
.nav-links{display:flex;align-items:center;gap:6px;list-style:none}
.nav-links a{padding:8px 14px;border-radius:8px;font-size:.94rem;color:var(--muted);font-weight:500;transition:.2s}
.nav-links a:hover,.nav-links a.active{color:var(--text);background:var(--card)}
.lang-btn{border:1px solid var(--border);background:var(--card);color:var(--text);
  padding:6px 12px;border-radius:8px;font-size:.82rem;font-weight:600;cursor:pointer}
.menu-toggle{display:none;background:none;border:0;color:var(--text);font-size:1.5rem;cursor:pointer}

/* ---------- hero ---------- */
.hero{padding:90px 0 60px;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;top:-160px;right:-120px;width:420px;height:420px;
  background:radial-gradient(circle,var(--primary),transparent 65%);opacity:.22;filter:blur(20px)}
.hero-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:40px;align-items:center;position:relative}
.hero h1{font-size:3rem;line-height:1.1;letter-spacing:-.03em;margin:10px 0}
.hero .greet{color:var(--primary);font-weight:600;letter-spacing:.02em}
.hero .role{font-size:1.3rem;color:var(--muted);font-weight:600;margin-bottom:14px}
.hero p.bio{font-size:1.05rem;color:var(--muted);max-width:540px;margin-bottom:26px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.avatar-wrap{justify-self:center}
.avatar{width:230px;height:230px;border-radius:50%;object-fit:cover;
  border:4px solid var(--card2);box-shadow:var(--shadow)}
.avatar-ph{width:230px;height:230px;border-radius:50%;
  background:linear-gradient(135deg,var(--primary),var(--primary-d));
  display:grid;place-items:center;font-size:4rem;font-weight:800;color:#fff;box-shadow:var(--shadow)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;padding:11px 22px;border-radius:10px;
  font-weight:600;font-size:.95rem;cursor:pointer;border:1px solid transparent;transition:.2s}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-d);transform:translateY(-1px)}
.btn-ghost{background:transparent;border-color:var(--border);color:var(--text)}
.btn-ghost:hover{background:var(--card);border-color:var(--primary)}
.btn-sm{padding:7px 14px;font-size:.85rem}

/* ---------- section head ---------- */
.section-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:34px}
.section-head h2{font-size:1.7rem;letter-spacing:-.02em}
.section-head a{color:var(--primary);font-weight:600;font-size:.92rem}

/* ---------- cards / grid ---------- */
.grid{display:grid;gap:22px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;transition:.25s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-4px);border-color:var(--primary);box-shadow:var(--shadow)}
.card-img{aspect-ratio:16/10;background:var(--card2);overflow:hidden}
.card-img img{width:100%;height:100%;object-fit:cover;transition:.3s}
.card:hover .card-img img{transform:scale(1.05)}
.card-img.ph{display:grid;place-items:center;font-size:2.4rem;color:var(--muted)}
.card-body{padding:18px;flex:1;display:flex;flex-direction:column}
.card-cat{font-size:.75rem;text-transform:uppercase;letter-spacing:.05em;color:var(--primary);font-weight:700}
.card-body h3{font-size:1.12rem;margin:6px 0 8px;line-height:1.35}
.card-body p{color:var(--muted);font-size:.92rem;flex:1}
.card-foot{display:flex;gap:12px;align-items:center;margin-top:14px;font-size:.85rem}
.card-foot a{color:var(--primary);font-weight:600}
.tag{display:inline-block;background:var(--card2);color:var(--muted);font-size:.72rem;
  padding:3px 9px;border-radius:20px;margin:2px 4px 2px 0}

/* ---------- skills ---------- */
.skills{display:grid;grid-template-columns:repeat(2,1fr);gap:18px 40px}
.skill-row{}
.skill-top{display:flex;justify-content:space-between;font-size:.9rem;margin-bottom:6px;font-weight:600}
.skill-bar{height:8px;background:var(--card2);border-radius:20px;overflow:hidden}
.skill-fill{height:100%;background:linear-gradient(90deg,var(--primary),var(--primary-d));border-radius:20px}

/* ---------- single ---------- */
.article{max-width:780px;margin:0 auto}
.article .cover{border-radius:var(--radius);margin:22px 0;border:1px solid var(--border)}
.article h1{font-size:2.2rem;letter-spacing:-.02em;line-height:1.2}
.meta-row{display:flex;gap:16px;flex-wrap:wrap;color:var(--muted);font-size:.9rem;margin:12px 0 4px}
.content{font-size:1.05rem;line-height:1.8}
.content h2,.content h3{margin:26px 0 12px}
.content p{margin:14px 0}
.content img{border-radius:10px;margin:16px 0}
.content ul,.content ol{margin:14px 0 14px 22px}
.content a{color:var(--primary);text-decoration:underline}
.content pre{background:var(--card);border:1px solid var(--border);padding:16px;border-radius:10px;overflow:auto;margin:16px 0}
.content code{background:var(--card);padding:2px 6px;border-radius:5px;font-size:.9em}

/* ---------- contact ---------- */
.form-grid{display:grid;gap:16px;max-width:620px;margin:0 auto}
.form-grid .row2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
label{font-size:.88rem;font-weight:600;margin-bottom:6px;display:block}
input,textarea,select{width:100%;background:var(--card);border:1px solid var(--border);color:var(--text);
  padding:11px 14px;border-radius:10px;font-size:.95rem;font-family:inherit}
input:focus,textarea:focus,select:focus{outline:none;border-color:var(--primary)}
textarea{min-height:140px;resize:vertical}
.alert{padding:12px 16px;border-radius:10px;margin-bottom:16px;font-size:.92rem}
.alert-ok{background:rgba(16,138,58,.15);border:1px solid #128a3a;color:#7ee2a0}
.alert-err{background:rgba(192,57,43,.15);border:1px solid #c0392b;color:#f0a99f}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--border);padding:34px 0;margin-top:40px;color:var(--muted)}
.footer-in{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:14px}
.socials{display:flex;gap:10px}
.socials a{width:38px;height:38px;border-radius:10px;background:var(--card);border:1px solid var(--border);
  display:grid;place-items:center;transition:.2s}
.socials a:hover{background:var(--primary);border-color:var(--primary);color:#fff}

/* ---------- misc ---------- */
.page-head{padding:50px 0 10px}
.page-head h1{font-size:2.2rem;letter-spacing:-.02em}
.empty{text-align:center;color:var(--muted);padding:50px 0}
.pill-filter{display:flex;gap:8px;flex-wrap:wrap;margin:20px 0 30px}
.pill-filter a{padding:7px 16px;border-radius:20px;background:var(--card);border:1px solid var(--border);
  font-size:.88rem;color:var(--muted);font-weight:600}
.pill-filter a.active,.pill-filter a:hover{background:var(--primary);color:#fff;border-color:var(--primary)}

/* ---------- responsive ---------- */
@media(max-width:860px){
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .hero-grid{grid-template-columns:1fr;text-align:center}
  .hero-actions{justify-content:center}
  .avatar-wrap{order:-1}
  .hero h1{font-size:2.3rem}
  .skills{grid-template-columns:1fr}
}
@media(max-width:600px){
  .grid-3,.grid-2{grid-template-columns:1fr}
  .nav-links{position:fixed;top:64px;left:0;right:0;background:var(--bg);flex-direction:column;
    align-items:stretch;padding:12px 20px;border-bottom:1px solid var(--border);display:none;gap:2px}
  .nav-links.open{display:flex}
  .nav-links a{padding:12px}
  .menu-toggle{display:block}
  .form-grid .row2{grid-template-columns:1fr}
  .hero h1{font-size:1.9rem}
}