/* ==========================================
   NOVA NEXUS — Shared Stylesheet
   Dark tech aesthetic: charcoal, steel blue, chrome
   ========================================== */

@import url('https://fonts.googleapis.com/css2?family=Rajdhani:wght@400;500;600;700&family=Orbitron:wght@400;500;700;900&family=Inter:wght@300;400;500;600&display=swap');

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg-deep:    #0a0d12;
  --bg-base:    #0e1219;
  --bg-card:    #131923;
  --bg-card2:   #18212e;
  --border:     #1f3044;
  --border-glow:#2a5a8a;

  --blue-dim:   #2b6cb0;
  --blue-mid:   #3a85cc;
  --blue-bright:#58a6d4;
  --blue-light: #7ec8e3;

  --silver:     #b0bec5;
  --silver-bright:#d0dde6;
  --white:      #eaf2f8;

  --star-glow:  #ffffff;
  --accent-glow:rgba(88,166,212,0.35);

  --font-head:  'Orbitron', sans-serif;
  --font-sub:   'Rajdhani', sans-serif;
  --font-body:  'Inter', sans-serif;

  --nav-h: 72px;
}

html { scroll-behavior: smooth; }

body {
  background-color: var(--bg-deep);
  color: var(--silver);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-base); }
::-webkit-scrollbar-thumb { background: var(--blue-dim); border-radius: 3px; }

/* ---------- Navigation ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 48px;
  background: rgba(10,13,18,0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-logo img {
  height: 42px;
  width: 42px;
  object-fit: contain;
  filter: drop-shadow(0 0 6px rgba(88,166,212,0.5));
}

.nav-logo-text {
  font-family: var(--font-head);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.12em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
  list-style: none;
}

.nav-links a {
  font-family: var(--font-sub);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--silver);
  text-transform: uppercase;
  transition: color 0.25s;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0; right: 0;
  height: 1px;
  background: var(--blue-bright);
  transform: scaleX(0);
  transition: transform 0.25s;
}

.nav-links a:hover,
.nav-links a.active { color: var(--blue-light); }

.nav-links a:hover::after,
.nav-links a.active::after { transform: scaleX(1); }

.nav-cta {
  font-family: var(--font-sub);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--white) !important;
  padding: 9px 22px;
  border: 1px solid var(--blue-mid);
  border-radius: 3px;
  background: transparent;
  transition: background 0.25s, box-shadow 0.25s, color 0.25s;
}

.nav-cta:hover {
  background: var(--blue-dim);
  box-shadow: 0 0 20px var(--accent-glow);
}

.nav-cta::after { display: none !important; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  font-family: var(--font-sub);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border-radius: 3px;
  transition: all 0.25s;
  cursor: pointer;
  line-height: 1;
}

.btn-primary {
  padding: 14px 36px;
  background: linear-gradient(135deg, var(--blue-dim), var(--blue-mid));
  color: var(--white);
  border: none;
  box-shadow: 0 0 24px rgba(58,133,204,0.4);
  font-size: 0.95rem;
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--blue-mid), var(--blue-bright));
  box-shadow: 0 0 40px rgba(88,166,212,0.55);
  transform: translateY(-2px);
}

.btn-outline {
  padding: 13px 34px;
  background: transparent;
  color: var(--blue-light);
  border: 1px solid var(--blue-mid);
  font-size: 0.95rem;
}

.btn-outline:hover {
  background: rgba(58,133,204,0.12);
  box-shadow: 0 0 20px var(--accent-glow);
  transform: translateY(-2px);
}

/* ---------- Section Shell ---------- */
.section {
  padding: 100px 0;
}

.section-inner {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 48px;
}

.section-label {
  font-family: var(--font-sub);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--blue-bright);
  margin-bottom: 14px;
}

.section-title {
  font-family: var(--font-head);
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1.2;
  margin-bottom: 20px;
}

.section-desc {
  font-size: 1rem;
  color: var(--silver);
  max-width: 540px;
  line-height: 1.75;
}

/* ---------- Divider Line ---------- */
.divider {
  width: 48px;
  height: 2px;
  background: linear-gradient(90deg, var(--blue-bright), transparent);
  margin-bottom: 24px;
}

/* ---------- Grid helpers ---------- */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 28px; }

/* ---------- Cards ---------- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 36px 32px;
  transition: border-color 0.3s, box-shadow 0.3s, transform 0.3s;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--blue-mid), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}

.card:hover {
  border-color: var(--border-glow);
  box-shadow: 0 8px 40px rgba(42,90,138,0.25);
  transform: translateY(-4px);
}

.card:hover::before { opacity: 1; }

.card-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(58,133,204,0.1);
  border: 1px solid var(--border-glow);
  border-radius: 4px;
  margin-bottom: 20px;
  font-size: 1.4rem;
}

.card-title {
  font-family: var(--font-sub);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}

.card-text {
  font-size: 0.93rem;
  color: var(--silver);
  line-height: 1.7;
}

/* ---------- Footer ---------- */
footer {
  background: var(--bg-base);
  border-top: 1px solid var(--border);
  padding: 56px 0 32px;
}

.footer-inner {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 48px;
}

.footer-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 48px;
  margin-bottom: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--border);
}

.footer-brand img {
  height: 44px;
  margin-bottom: 14px;
  filter: drop-shadow(0 0 8px rgba(88,166,212,0.4));
}

.footer-brand-name {
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.12em;
  margin-bottom: 8px;
}

.footer-tagline {
  font-size: 0.88rem;
  color: var(--silver);
  max-width: 240px;
}

.footer-links-group h4 {
  font-family: var(--font-sub);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--blue-bright);
  margin-bottom: 16px;
}

.footer-links-group ul { list-style: none; }

.footer-links-group li { margin-bottom: 10px; }

.footer-links-group a {
  font-size: 0.9rem;
  color: var(--silver);
  transition: color 0.2s;
}

.footer-links-group a:hover { color: var(--blue-light); }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  color: #4a6070;
}

/* ---------- Page Hero (inner pages) ---------- */
.page-hero {
  padding-top: calc(var(--nav-h) + 80px);
  padding-bottom: 80px;
  text-align: center;
  background:
    radial-gradient(ellipse 60% 50% at 50% 0%, rgba(42,90,138,0.18) 0%, transparent 70%),
    var(--bg-base);
  border-bottom: 1px solid var(--border);
}

.page-hero .section-inner { display: flex; flex-direction: column; align-items: center; }

.page-hero .section-title { font-size: clamp(2rem, 4vw, 3rem); margin-bottom: 16px; }

.page-hero .section-desc { text-align: center; max-width: 580px; }

/* ---------- Star glow pulse (decorative) ---------- */
@keyframes starPulse {
  0%, 100% { opacity: 0.6; transform: scale(1); }
  50%       { opacity: 1;   transform: scale(1.08); }
}

@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-10px); }
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .nav { padding: 0 24px; }
  .nav-links { gap: 20px; }
  .section-inner { padding: 0 24px; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .footer-top { flex-wrap: wrap; }
}

@media (max-width: 640px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  .nav-cta { display: none; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
}