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

html {
  scroll-behavior: smooth;
}

body {
  background: #0d1117;
  color: #e6edf3;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.6;
}

/* ── NAV ─────────────────────────────────────────── */

nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 17, 23, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid #21262d;
  padding: 0 40px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: monospace;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: #e6edf3;
  text-decoration: none;
}

.nav-logo span { color: #58a6ff; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-links a {
  color: #8b949e;
  text-decoration: none;
  font-size: 14px;
  transition: color 0.2s;
}

.nav-links a:hover { color: #e6edf3; }

.lang-btn {
  background: #21262d;
  border: 1px solid #30363d;
  border-radius: 6px;
  padding: 5px 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  color: #8b949e;
  font-size: 13px;
  transition: border-color 0.2s, color 0.2s;
}

.lang-btn:hover {
  border-color: #58a6ff;
  color: #e6edf3;
}

.lang-btn .flag { font-size: 16px; line-height: 1; }

/* ── HERO ─────────────────────────────────────────── */

.hero {
  padding: 96px 40px 80px;
  border-bottom: 1px solid #21262d;
  max-width: 860px;
}

.hero-label {
  font-family: monospace;
  font-size: 11px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: #58a6ff;
  margin-bottom: 16px;
}

.hero h1 {
  font-size: 48px;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: #e6edf3;
  margin-bottom: 16px;
  line-height: 1.1;
}

.hero-tagline {
  font-size: 17px;
  color: #8b949e;
  max-width: 520px;
  margin-bottom: 32px;
  line-height: 1.7;
}

.hero-tagline strong { color: #c9d1d9; }

.hero-ctas { display: flex; gap: 12px; flex-wrap: wrap; }

.btn-primary {
  background: #1f6feb;
  color: #fff;
  padding: 10px 24px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  border: 1px solid #388bfd;
  transition: background 0.2s;
}

.btn-primary:hover { background: #388bfd; }

.btn-secondary {
  background: transparent;
  color: #8b949e;
  padding: 10px 24px;
  border-radius: 6px;
  font-size: 14px;
  text-decoration: none;
  border: 1px solid #30363d;
  transition: border-color 0.2s, color 0.2s;
}

.btn-secondary:hover {
  border-color: #58a6ff;
  color: #e6edf3;
}

/* ── SECTIONS ─────────────────────────────────────── */

section {
  padding: 72px 40px;
  border-bottom: 1px solid #21262d;
}

.section-label {
  font-family: monospace;
  font-size: 10px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: #58a6ff;
  margin-bottom: 32px;
}

/* ── SERVICES ─────────────────────────────────────── */

.services-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  max-width: 720px;
  margin-bottom: 28px;
}

.service-card {
  background: #161b22;
  border: 1px solid #30363d;
  border-radius: 8px;
  padding: 24px;
  transition: border-color 0.2s;
}

.service-card:hover { border-color: #58a6ff; }

.service-card h3 {
  font-size: 15px;
  font-weight: 600;
  color: #e6edf3;
  margin-bottom: 12px;
}

.service-card ul { list-style: none; }

.service-card ul li {
  font-size: 13px;
  color: #8b949e;
  padding: 3px 0;
}

.service-card ul li::before {
  content: "→ ";
  color: #58a6ff;
  font-family: monospace;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  max-width: 720px;
}

.tag {
  background: #21262d;
  color: #79c0ff;
  border: 1px solid #30363d;
  padding: 5px 12px;
  border-radius: 4px;
  font-size: 11px;
  font-family: monospace;
}

/* ── ABOUT ────────────────────────────────────────── */

.about-text {
  font-size: 16px;
  color: #8b949e;
  max-width: 560px;
  line-height: 1.9;
}

/* ── CONTACT ──────────────────────────────────────── */

.contact-heading {
  font-size: 20px;
  color: #e6edf3;
  margin-bottom: 24px;
}

.contact-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.contact-link {
  background: #161b22;
  border: 1px solid #30363d;
  border-radius: 6px;
  padding: 10px 20px;
  font-size: 13px;
  color: #8b949e;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: border-color 0.2s, color 0.2s;
}

.contact-link:hover {
  border-color: #58a6ff;
  color: #e6edf3;
}

.contact-link .icon { font-size: 15px; }
.contact-link svg.icon { width: 16px; height: 16px; display: block; }

/* ── FOOTER ───────────────────────────────────────── */

footer {
  padding: 24px 40px;
  border-top: 1px solid #21262d;
  font-family: monospace;
  font-size: 11px;
  color: #484f58;
  display: flex;
  justify-content: space-between;
}

/* ── ACCESSIBILITY ────────────────────────────────── */

.nav-links a:focus-visible,
.btn-primary:focus-visible,
.btn-secondary:focus-visible,
.lang-btn:focus-visible,
.contact-link:focus-visible {
  outline: 2px solid #58a6ff;
  outline-offset: 2px;
}

/* ── RESPONSIVE ───────────────────────────────────── */

@media (max-width: 768px) {
  nav { padding: 0 20px; }

  .nav-links a { display: none; }

  .hero {
    padding: 56px 20px 48px;
  }

  .hero h1 { font-size: 32px; }

  section { padding: 48px 20px; }

  .services-grid { grid-template-columns: 1fr; }

  footer {
    padding: 20px;
    flex-direction: column;
    gap: 8px;
    align-items: flex-start;
  }
}