@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;600;700;800;900&family=Roboto:wght@300;400;500&display=swap');

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

:root {
  --bg:       #050810;
  --surface:  #0d1120;
  --surface2: #131929;
  --border:   rgba(255,255,255,0.06);
  --border2:  rgba(255,255,255,0.12);
  --text:     #e8eaf6;
  --muted:    #7b82a0;
  --accent:   #2563eb;
  --accent-h: #1d4ed8;
  --accent2:  #06b6d4;
  --glow:     rgba(37,99,235,0.22);
  --font-h:   'Montserrat', sans-serif;
  --font-b:   'Roboto', sans-serif;
  --radius:   12px;
  --radius-lg:20px;
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-b);
  font-weight: 400;
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ── SCROLLBAR ── */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 4px; }

/* ── NAV ── */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 200;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 5%;
  height: 68px;
  background: rgba(5,8,16,0.80);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: background 0.3s;
}
.nav.scrolled { background: rgba(5,8,16,0.96); }

.nav-logo {
  font-family: var(--font-h);
  font-weight: 800;
  font-size: 1.2rem;
  letter-spacing: 0.04em;
  color: var(--text);
  text-decoration: none;
  display: flex; align-items: center; gap: 8px;
}
.nav-logo .dot {
  width: 8px; height: 8px;
  background: var(--accent);
  border-radius: 50%;
  display: inline-block;
  box-shadow: 0 0 10px var(--accent);
}

.nav-links {
  display: flex; align-items: center; gap: 2rem;
  list-style: none;
}
.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-family: var(--font-b);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}
.nav-links a:hover,
.nav-links a.active { color: var(--text); }

.nav-cta {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--accent);
  color: #fff;
  padding: 0.5rem 1.25rem;
  border-radius: 8px;
  text-decoration: none;
  font-family: var(--font-h);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  transition: background 0.2s, transform 0.15s;
}
.nav-cta:hover { background: var(--accent-h); transform: translateY(-1px); }

/* hamburger */
.hamburger {
  display: none; flex-direction: column; gap: 5px;
  cursor: pointer; background: none; border: none; padding: 4px;
}
.hamburger span {
  display: block; width: 24px; height: 2px;
  background: var(--text); border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  display: none;
  position: fixed; top: 68px; left: 0; right: 0; z-index: 190;
  background: rgba(5,8,16,0.98);
  border-bottom: 1px solid var(--border2);
  padding: 1.5rem 5%;
  flex-direction: column; gap: 1rem;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  color: var(--text); text-decoration: none;
  font-family: var(--font-h); font-weight: 600;
  font-size: 1.05rem; padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
}
.mobile-menu a:last-child { border-bottom: none; }

/* ── UTIL ── */
.container { max-width: 1160px; margin: 0 auto; padding: 0 5%; }

.section { padding: 6rem 0; }
.section-sm { padding: 4rem 0; }

.tag {
  display: inline-block;
  font-family: var(--font-h);
  font-size: 0.7rem; font-weight: 700;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--accent2);
  margin-bottom: 1rem;
}

h1, h2, h3, h4 { font-family: var(--font-h); line-height: 1.1; }

.section-title {
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}
.section-sub {
  font-size: 1.05rem;
  color: var(--muted);
  font-weight: 300;
  max-width: 540px;
  margin-bottom: 3rem;
  line-height: 1.7;
}

/* ── BUTTONS ── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius);
  font-family: var(--font-h);
  font-weight: 700; font-size: 0.875rem;
  letter-spacing: 0.03em;
  cursor: pointer; border: none;
  text-decoration: none;
  transition: transform 0.15s, opacity 0.15s, background 0.2s;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-h); }
.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border2);
}
.btn-ghost:hover { background: var(--surface2); }

/* ── DIVIDER ── */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border2), transparent);
  border: none; margin: 0;
}

/* ── CARD BASE ── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: border-color 0.25s, transform 0.25s;
  position: relative;
  overflow: hidden;
}
.card:hover { border-color: var(--border2); transform: translateY(-4px); }

/* ── FOOTER ── */
footer {
  border-top: 1px solid var(--border);
  padding: 3rem 0 2rem;
}
.footer-inner {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 3rem;
}
.footer-brand .nav-logo { margin-bottom: 1rem; font-size: 1.05rem; }
.footer-brand p { color: var(--muted); font-size: 0.875rem; line-height: 1.7; }
.footer-col h4 {
  font-family: var(--font-h);
  font-size: 0.75rem; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1rem;
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 0.6rem; }
.footer-col ul a {
  color: var(--muted); text-decoration: none;
  font-size: 0.875rem;
  transition: color 0.2s;
}
.footer-col ul a:hover { color: var(--text); }
.footer-bottom {
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 0.5rem;
}
.footer-bottom p { color: var(--muted); font-size: 0.8rem; }

/* ── ANIMATIONS ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-10px); }
}
@keyframes pulse-glow {
  0%, 100% { opacity: 0.4; }
  50%       { opacity: 0.8; }
}
.fade-up { animation: fadeUp 0.7s ease both; }
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }

@media (max-width: 900px) {
  .nav-links, .nav-cta { display: none; }
  .hamburger { display: flex; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  .section { padding: 4rem 0; }
  .footer-inner { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
}