/* ============================================================
   Nilavanam Technologies Private Limited
   Commercial Corporate Theme — Subtle palette + Glassmorphism
   ============================================================ */
:root{
  --bg-0:#0b1220;            /* deep slate */
  --bg-1:#0f1729;
  --bg-2:#121c33;
  --ink:#e8edf6;            /* primary text */
  --ink-soft:#aeb9cc;       /* secondary text */
  --muted:#7e8aa0;
  --brand:#3f6fb0;          /* subtle corporate blue */
  --brand-2:#5a8fd6;
  --accent:#7fb4d8;
  --line:rgba(255,255,255,.10);
  --ok:#5fae8c;
  --radius:12px;
  --maxw:1200px;
  --shadow:0 10px 40px rgba(0,0,0,.35);
  --font: "Inter","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  color:var(--ink);
  line-height:1.7;
  background:
    radial-gradient(1100px 600px at 12% -8%, rgba(63,111,176,.20), transparent 60%),
    radial-gradient(900px 500px at 95% 0%, rgba(127,180,216,.14), transparent 55%),
    linear-gradient(180deg,var(--bg-0),var(--bg-1) 55%,var(--bg-2));
  background-attachment:fixed;
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--brand-2);text-decoration:none;transition:color .2s}
a:hover{color:var(--accent)}
img{max-width:100%;display:block;border-radius:10px}
.container{max-width:var(--maxw);margin:0 auto;padding:0 22px}
section{padding:64px 0}
h1,h2,h3{line-height:1.25;font-weight:700;letter-spacing:.2px}
h1{font-size:clamp(2rem,4vw,3.2rem);margin-bottom:.5em}
h2{font-size:clamp(1.5rem,2.6vw,2.2rem);margin-bottom:.6em}
h3{font-size:1.25rem;margin-bottom:.45em;color:#fff}
p{color:var(--ink-soft);margin-bottom:1em}
.lead{font-size:1.15rem;color:var(--ink)}
.eyebrow{display:inline-block;text-transform:uppercase;letter-spacing:3px;font-size:.74rem;color:var(--accent);font-weight:600;margin-bottom:.7em}

/* ---------- Required glassmorphism card ---------- */
.card{
  backdrop-filter: blur(15px) saturate(85%);
  -webkit-backdrop-filter: blur(15px) saturate(85%);
  background-color: rgba(17, 25, 40, 0.24);
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.125);
}
.card{padding:26px;transition:transform .25s ease,border-color .25s ease}
.card:hover{transform:translateY(-4px);border-color:rgba(127,180,216,.4)}

/* ---------- Header / Nav ---------- */
.site-header{position:sticky;top:0;z-index:1000;
  backdrop-filter:blur(14px) saturate(85%);
  -webkit-backdrop-filter:blur(14px) saturate(85%);
  background-color:rgba(11,18,32,.72);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:12px;font-weight:700;color:#fff}
.brand img{height:44px;width:auto;border-radius:0}
.brand .bn{display:flex;flex-direction:column;line-height:1.05}
.brand .bn b{font-size:1.05rem}
.brand .bn span{font-size:.68rem;color:var(--muted);letter-spacing:.5px}
.menu{display:flex;align-items:center;gap:6px;list-style:none}
.menu>li{position:relative}
.menu>li>a{display:block;padding:12px 14px;color:var(--ink);font-weight:500;border-radius:8px;font-size:.95rem}
.menu>li>a:hover{background:rgba(255,255,255,.06);color:#fff}
.has-sub>a::after{content:"\25BE";font-size:.62rem;margin-left:7px;color:var(--muted)}
.submenu{position:absolute;top:calc(100% + 8px);left:0;min-width:248px;list-style:none;
  padding:8px;border-radius:12px;opacity:0;visibility:hidden;transform:translateY(8px);
  transition:.22s;
  backdrop-filter:blur(15px) saturate(85%);-webkit-backdrop-filter:blur(15px) saturate(85%);
  background-color:rgba(17,25,40,.9);border:1px solid var(--line);box-shadow:var(--shadow)}
.has-sub:hover .submenu{opacity:1;visibility:visible;transform:translateY(0)}
.submenu li a{display:block;padding:10px 12px;border-radius:8px;color:var(--ink-soft);font-size:.9rem}
.submenu li a:hover{background:rgba(63,111,176,.22);color:#fff}
.btn-li{display:inline-flex;align-items:center;gap:8px;background:#0a66c2;color:#fff;
  padding:9px 16px;border-radius:8px;font-weight:600;font-size:.9rem}
.btn-li:hover{background:#0958a8;color:#fff}
.btn-li svg{width:16px;height:16px;fill:#fff}
.hamburger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.hamburger span{width:24px;height:2px;background:#fff;border-radius:2px;transition:.3s}

/* ---------- Hero ---------- */
.hero{position:relative;padding:96px 0 84px;overflow:hidden}
.hero .container{position:relative;z-index:2;max-width:880px}
.hero-bg{position:absolute;inset:0;z-index:0;opacity:.22;
  background-size:cover;background-position:center}
.hero::after{content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(180deg,rgba(11,18,32,.4),rgba(11,18,32,.85))}
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 26px;border-radius:10px;
  font-weight:600;border:1px solid transparent;cursor:pointer;transition:.22s}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff}
.btn-primary:hover{filter:brightness(1.08);color:#fff;transform:translateY(-2px)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--accent);color:#fff}
.btn-row{display:flex;gap:14px;flex-wrap:wrap;margin-top:26px}

/* ---------- Grids ---------- */
.grid{display:grid;gap:24px}
.g-2{grid-template-columns:repeat(2,1fr)}
.g-3{grid-template-columns:repeat(3,1fr)}
.g-4{grid-template-columns:repeat(4,1fr)}
.feature h3{display:flex;align-items:center;gap:10px}
.dot{width:34px;height:34px;border-radius:9px;flex:0 0 auto;display:grid;place-items:center;
  background:rgba(63,111,176,.22);color:var(--accent);font-weight:700}

/* ---------- Topic blocks (alternating media) ---------- */
.topic{display:grid;grid-template-columns:1fr 1fr;gap:38px;align-items:center;margin-bottom:34px;padding:26px}
.topic:nth-child(even) .topic-media{order:2}
.topic-media img{width:100%;height:340px;object-fit:cover;box-shadow:var(--shadow)}
.topic-num{font-size:.78rem;color:var(--accent);font-weight:700;letter-spacing:2px;text-transform:uppercase}
.topic-body p{font-size:.97rem}
.sector-banner{height:170px;object-fit:cover;width:100%;margin-bottom:16px}

.section-head{text-align:center;max-width:760px;margin:0 auto 44px}
.divider{height:1px;background:var(--line);margin:0}
.pill{display:inline-block;padding:5px 12px;border-radius:999px;font-size:.74rem;
  background:rgba(95,174,140,.16);color:var(--ok);border:1px solid rgba(95,174,140,.3);margin:0 6px 8px 0}
ul.clean{list-style:none}
ul.clean li{padding:8px 0 8px 26px;position:relative;color:var(--ink-soft)}
ul.clean li::before{content:"\2713";position:absolute;left:0;color:var(--ok);font-weight:700}
.page-hero{padding:80px 0 36px;text-align:center}
.crumb{color:var(--muted);font-size:.86rem;margin-bottom:10px}

/* ---------- Footer / Sitemap ---------- */
.site-footer{border-top:1px solid var(--line);background:rgba(8,13,24,.7);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);padding:56px 0 26px;margin-top:40px}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}
.site-footer h4{color:#fff;font-size:.95rem;margin-bottom:16px;letter-spacing:.5px}
.site-footer ul{list-style:none}
.site-footer ul li{margin-bottom:9px}
.site-footer a{color:var(--ink-soft);font-size:.9rem}
.site-footer a:hover{color:var(--accent)}
.foot-brand p{font-size:.88rem}
.foot-bottom{border-top:1px solid var(--line);margin-top:34px;padding-top:22px;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;color:var(--muted);font-size:.84rem}

/* ---------- Responsive ---------- */
@media(max-width:900px){
  .g-4{grid-template-columns:repeat(2,1fr)}
  .g-3{grid-template-columns:repeat(2,1fr)}
  .topic{grid-template-columns:1fr}
  .topic:nth-child(even) .topic-media{order:0}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:760px){
  .hamburger{display:flex}
  .menu{position:fixed;top:72px;right:0;height:calc(100vh - 72px);width:min(86vw,340px);
    flex-direction:column;align-items:stretch;gap:2px;padding:18px;overflow-y:auto;
    background-color:rgba(11,18,32,.97);backdrop-filter:blur(16px);
    transform:translateX(105%);transition:.3s;border-left:1px solid var(--line)}
  .menu.open{transform:translateX(0)}
  .submenu{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;
    background:transparent;border:0;padding:2px 0 6px 14px;display:none}
  .has-sub.open .submenu{display:block}
  .g-2,.g-3,.g-4{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
}