/* ─────────────────────────────────────────────────────────────
   StellerSight Private Limited — corporate site
   Design system: deep-space dark, cyan/violet accent, Space Grotesk + Inter
   ───────────────────────────────────────────────────────────── */

:root {
  /* Neo Enterprise Intelligence palette */
  --bg: #050816;         /* deep space navy */
  --bg-2: #0B1226;       /* midnight blue */
  --surface: #111827;
  --surface-2: #161F34;
  --line: rgba(160, 178, 224, 0.13);
  --line-strong: rgba(160, 178, 224, 0.28);
  --ink: #ffffff;
  --muted: #B8C1D1;
  --faint: #7C8CA5;
  --cyan: #00D9FF;       /* electric cyan */
  --violet: #2563EB;     /* royal blue */
  --grad: linear-gradient(96deg, #00D9FF 0%, #2563EB 100%);
  --radius: 16px;
  --radius-lg: 24px;
  --font-display: "Space Grotesk", "Inter", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, sans-serif;
  --maxw: 1160px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection { background: rgba(79, 216, 255, 0.28); }

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img, svg { max-width: 100%; display: block; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ── Starfield backdrop ─────────────────────────────────────── */
.sky {
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(1px 1px at 12% 22%, rgba(255,255,255,.5) 50%, transparent 51%),
    radial-gradient(1px 1px at 34% 8%,  rgba(255,255,255,.35) 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 58% 30%, rgba(160,220,255,.5) 50%, transparent 51%),
    radial-gradient(1px 1px at 73% 12%, rgba(255,255,255,.4) 50%, transparent 51%),
    radial-gradient(1px 1px at 88% 26%, rgba(200,180,255,.45) 50%, transparent 51%),
    radial-gradient(1px 1px at 21% 55%, rgba(255,255,255,.25) 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 44% 70%, rgba(160,220,255,.3) 50%, transparent 51%),
    radial-gradient(1px 1px at 67% 62%, rgba(255,255,255,.3) 50%, transparent 51%),
    radial-gradient(1px 1px at 91% 80%, rgba(255,255,255,.25) 50%, transparent 51%),
    radial-gradient(1px 1px at 8% 85%,  rgba(200,180,255,.3) 50%, transparent 51%),
    var(--bg);
}
.sky::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(60% 45% at 70% -10%, rgba(87, 76, 255, 0.16), transparent 70%),
    radial-gradient(50% 40% at 10% 0%, rgba(29, 178, 226, 0.12), transparent 70%);
}

/* ── Header ─────────────────────────────────────────────────── */
/* Transparent at top, solid after scroll (JS toggles .scrolled) */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background .35s ease, border-color .35s ease;
}
.site-header.scrolled {
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: rgba(5, 8, 22, 0.78);
  border-bottom-color: var(--line);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.brand .mark { height: 34px; width: auto; flex: none; }
.brand em { font-style: normal; color: inherit; }

.nav-links { display: flex; align-items: center; gap: 30px; }
.nav-links a {
  font-size: 14.5px;
  font-weight: 500;
  color: var(--muted);
  transition: color .18s ease;
}
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--ink); }
.nav-links a[aria-current="page"] { position: relative; }
.nav-links a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -6px;
  height: 2px;
  border-radius: 2px;
  background: var(--grad);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 14.5px;
  padding: 11px 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease, border-color .18s ease;
}
.btn-primary {
  background: #00D9FF;
  color: #050816;
  box-shadow: 0 8px 28px rgba(0, 217, 255, 0.25);
}
.btn-primary:hover { transform: translateY(-2px); background: #33e1ff; box-shadow: 0 12px 36px rgba(0, 217, 255, 0.38); }
.btn-ghost {
  border-color: var(--line-strong);
  color: var(--ink);
  background: rgba(255,255,255,0.02);
}
.btn-ghost:hover { border-color: var(--cyan); transform: translateY(-2px); }
.btn-sm { padding: 9px 18px; font-size: 13.5px; }

/* Nav CTA blends into the header: subtle outline, not a loud fill.
   Cyan glow only on hover so it still reads as the primary action. */
.nav-links .btn-primary {
  background: transparent;
  color: var(--ink);
  border-color: var(--line-strong);
  box-shadow: none;
}
.nav-links .btn-primary:hover {
  background: rgba(0, 217, 255, 0.10);
  border-color: var(--cyan);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: none;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  width: 42px; height: 38px;
  color: var(--ink);
  font-size: 18px;
  cursor: pointer;
}

/* ── Hero ───────────────────────────────────────────────────── */
.hero { position: relative; padding: 96px 0 84px; overflow: hidden; }
.hero-canvas { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 0; pointer-events: none; }
.hero > .wrap { position: relative; z-index: 1; }
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 48px;
  align-items: center;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
  border: 1px solid rgba(79, 216, 255, 0.3);
  background: rgba(79, 216, 255, 0.06);
  padding: 7px 14px;
  border-radius: 999px;
  margin-bottom: 26px;
}
.eyebrow::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 10px var(--cyan); }

h1 {
  font-family: var(--font-display);
  font-size: clamp(38px, 5.4vw, 62px);
  line-height: 1.06;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 22px;
}
h1 .glow { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }

.lede { font-size: clamp(16px, 1.8vw, 19px); color: var(--muted); max-width: 56ch; margin-bottom: 34px; }

.hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 44px; }

.hero-facts { display: flex; gap: 36px; flex-wrap: wrap; }
.fact .n {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 700;
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.fact .l { font-size: 12.5px; color: var(--faint); letter-spacing: 0.08em; text-transform: uppercase; margin-top: 2px; }

.orbital { position: relative; }
.orbital svg { width: 100%; height: auto; }
.orbital .globe-canvas { width: 100%; aspect-ratio: 1 / 1; display: block; }

/* ── Sections ───────────────────────────────────────────────── */
section { padding: 84px 0; position: relative; }
.section-head { max-width: 720px; margin-bottom: 52px; }
.kicker {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.kicker::before { content: ""; width: 28px; height: 1px; background: var(--cyan); }
h2 {
  font-family: var(--font-display);
  font-size: clamp(28px, 3.6vw, 42px);
  line-height: 1.12;
  font-weight: 700;
  letter-spacing: -0.015em;
  margin-bottom: 16px;
}
.section-head p { color: var(--muted); font-size: 17px; }

.band { background: linear-gradient(180deg, transparent, rgba(13, 20, 40, 0.6) 18%, rgba(13, 20, 40, 0.6) 82%, transparent); }

/* ── Cards ──────────────────────────────────────────────────── */
.grid { display: grid; gap: 22px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  position: relative;
  background: linear-gradient(165deg, rgba(22, 31, 52, 0.78), rgba(13, 19, 36, 0.92));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 28px;
  transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease;
}
.card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 217, 255, 0.45);
  box-shadow: 0 18px 48px rgba(2, 6, 20, 0.7), 0 0 0 1px rgba(0, 217, 255, 0.12), 0 0 32px rgba(0, 217, 255, 0.07);
}
.card:hover .icon { transform: translateY(-2px) scale(1.05); }
.card .icon { transition: transform .25s ease; }
.card .icon {
  width: 46px; height: 46px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  margin-bottom: 20px;
  background: linear-gradient(140deg, rgba(79, 216, 255, 0.14), rgba(143, 123, 255, 0.14));
  border: 1px solid rgba(79, 216, 255, 0.25);
}
.card .icon svg { width: 22px; height: 22px; stroke: var(--cyan); }
h3 {
  font-family: var(--font-display);
  font-size: 19.5px;
  font-weight: 600;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}
.card p { color: var(--muted); font-size: 14.8px; }
.card .more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 18px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--cyan);
}
.card .more::after { content: "→"; transition: transform .18s ease; }
.card:hover .more::after { transform: translateX(4px); }

.tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.tag {
  font-size: 12px;
  font-weight: 500;
  color: var(--muted);
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.02);
  padding: 4px 11px;
  border-radius: 999px;
  letter-spacing: 0.02em;
}

/* ── Service detail blocks ──────────────────────────────────── */
.svc {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 28px;
  padding: 44px 0;
  border-top: 1px solid var(--line);
}
.svc:last-of-type { border-bottom: 1px solid var(--line); }
.svc .num {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  color: var(--faint);
  padding-top: 6px;
}
.svc h3 { font-size: 24px; margin-bottom: 12px; }
.svc > div > p { color: var(--muted); max-width: 68ch; margin-bottom: 18px; }
.svc-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px 28px; max-width: 760px; }
.svc-list li {
  position: relative;
  padding-left: 22px;
  font-size: 14.5px;
  color: var(--muted);
}
.svc-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 9px;
  width: 8px; height: 8px;
  border-radius: 2px;
  background: var(--grad);
  transform: rotate(45deg);
}

/* ── Product showcase ───────────────────────────────────────── */
.product {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 44px;
  align-items: center;
  padding: 52px 0;
  border-top: 1px solid var(--line);
}
.product:last-of-type { border-bottom: 1px solid var(--line); }
.product .status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #57e6a4;
  margin-bottom: 14px;
}
.product .status::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: #57e6a4; box-shadow: 0 0 10px #57e6a4; }
.product .status.dev { color: #ffc46b; }
.product .status.dev::before { background: #ffc46b; box-shadow: 0 0 10px #ffc46b; }
.product h3 { font-size: 28px; }
.product p { color: var(--muted); margin: 14px 0 22px; max-width: 56ch; }
.product-visual {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, rgba(21, 30, 58, 0.6), rgba(8, 11, 24, 0.9));
  padding: 20px;
}
.product-visual svg { width: 100%; height: auto; border-radius: 10px; }

/* ── Process ────────────────────────────────────────────────── */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: step; }
.step {
  display: block;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 22px;
  background: rgba(10, 15, 30, 0.5);
  counter-increment: step;
  transition: transform .22s ease, border-color .22s ease;
}
a.step:hover { transform: translateY(-3px); border-color: rgba(79, 216, 255, 0.4); }
.step::before {
  content: "0" counter(step);
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: 0.15em;
  display: block;
  margin-bottom: 14px;
}
.step h3 { font-size: 16.5px; }
.step p { font-size: 13.8px; color: var(--muted); margin-top: 6px; }

/* ── Industry chips ─────────────────────────────────────────── */
.ind-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }

/* ── CTA panel ──────────────────────────────────────────────── */
.cta-panel {
  position: relative;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  padding: 64px 48px;
  text-align: center;
  overflow: hidden;
  background:
    radial-gradient(80% 120% at 50% -20%, rgba(88, 96, 255, 0.22), transparent 70%),
    linear-gradient(180deg, rgba(16, 24, 48, 0.9), rgba(8, 11, 24, 0.95));
}
.cta-panel h2 { margin-bottom: 14px; }
.cta-panel p { color: var(--muted); max-width: 52ch; margin: 0 auto 30px; }
.cta-panel .hero-ctas { justify-content: center; margin-bottom: 0; }

/* ── Footer ─────────────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 60px 0 36px;
  background: rgba(4, 6, 13, 0.85);
  margin-top: 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 44px;
}
.footer-grid h4 {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--faint);
  margin-bottom: 16px;
}
.footer-grid li { margin-bottom: 10px; }
.footer-grid a, .footer-grid li { font-size: 14px; color: var(--muted); }
.footer-grid a:hover { color: var(--cyan); }
.footer-brand p { font-size: 14px; color: var(--muted); margin-top: 14px; max-width: 34ch; }
.footer-meta {
  border-top: 1px solid var(--line);
  padding-top: 26px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 12.8px;
  color: var(--faint);
}
.footer-meta .reg { line-height: 1.8; }
.visitor-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 12.5px;
  color: var(--muted);
}
.visitor-chip::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: #57e6a4; box-shadow: 0 0 8px #57e6a4; }

/* ── Page hero (inner pages) ────────────────────────────────── */
.page-hero { padding: 80px 0 44px; }
.page-hero h1 { font-size: clamp(34px, 4.6vw, 54px); }
.page-hero .lede { margin-bottom: 0; }

/* ── Info tables (company page) ─────────────────────────────── */
.reg-table {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.reg-table .row {
  display: grid;
  grid-template-columns: 240px 1fr;
  border-bottom: 1px solid var(--line);
}
.reg-table .row:last-child { border-bottom: none; }
.reg-table .k {
  padding: 16px 22px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--faint);
  background: rgba(255,255,255,0.02);
}
.reg-table .v { padding: 16px 22px; font-size: 14.5px; color: var(--ink); }

/* ── Contact ────────────────────────────────────────────────── */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
.contact-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px;
  background: linear-gradient(165deg, rgba(21, 30, 58, 0.5), rgba(10, 14, 28, 0.8));
}
.contact-card h3 { margin-bottom: 8px; }
.contact-card p { color: var(--muted); font-size: 14.5px; margin-bottom: 18px; }
.contact-card .big {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  color: var(--cyan);
  word-break: break-all;
}

/* ── Reveal animation (only when JS is available: html.js) ──── */
.js .reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s ease, transform .7s ease; }
.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .js .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ── 404 ────────────────────────────────────────────────────── */
.notfound { min-height: 60vh; display: grid; place-items: center; text-align: center; padding: 80px 0; }
.notfound .code {
  font-family: var(--font-display);
  font-size: clamp(90px, 16vw, 160px);
  font-weight: 700;
  line-height: 1;
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; }
  .orbital { max-width: 420px; margin: 0 auto; }
  .grid-3, .ind-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .product { grid-template-columns: 1fr; gap: 28px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 68px; left: 0; right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    background: rgba(5, 7, 15, 0.97);
    border-bottom: 1px solid var(--line);
    padding: 12px 24px 20px;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 10px 0; font-size: 16px; width: 100%; }
  .nav-links a[aria-current="page"]::after { display: none; }
  .nav-links .btn { margin-top: 10px; }
  .nav-toggle { display: block; }
  .grid-3, .grid-2, .ind-grid, .steps, .contact-grid { grid-template-columns: 1fr; }
  .svc { grid-template-columns: 1fr; gap: 10px; padding: 36px 0; }
  .svc-list { grid-template-columns: 1fr; }
  .reg-table .row { grid-template-columns: 1fr; }
  .reg-table .k { padding-bottom: 4px; }
  .reg-table .v { padding-top: 4px; }
  .cta-panel { padding: 48px 24px; }
  section { padding: 64px 0; }
  .hero { padding: 64px 0; }
}