:root {
  --bg: #0b1020;
  --bg-soft: #121937;
  --text: #e7e9ee;
  --muted: #b7bfd1;
  --accent: #7c9cff;
  --accent-2: #9ef7d3;
  --card: #11162f;
  --shadow: 0 10px 30px rgba(0,0,0,0.35);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Inter, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.container {
  width: min(1100px, 92vw);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  backdrop-filter: blur(6px);
  background: rgba(11,16,32,0.6);
  z-index: 50;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.8rem 1rem;
  width: min(1100px, 92vw);
  margin: 0 auto;
}

.brand {
  font-weight: 700;
  text-decoration: none;
  color: var(--text);
  letter-spacing: 0.5px;
}

.menu-toggle {
  display: none;
  font-size: 1.5rem;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.15);
  color: var(--text);
  padding: 0.25rem 0.5rem;
  border-radius: 0.5rem;
}

.links {
  list-style: none;
  display: flex;
  gap: 1rem;
  margin: 0;
  padding: 0;
}

.links a {
  text-decoration: none;
  color: var(--muted);
  border: 1px solid transparent;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  transition: transform 0.1s ease, background 0.2s ease, color 0.2s ease;
}

.links a:hover, .cta:hover {
  transform: translateY(-1px);
  background: var(--bg-soft);
  color: var(--text);
}

.hero {
  display: grid;
  place-items: center;
  min-height: 72vh;
  background: radial-gradient(1200px 600px at 70% 5%, rgba(124,156,255,0.08), transparent 60%),
              radial-gradient(800px 400px at 0% 100%, rgba(158,247,211,0.1), transparent 60%);
}

.hero-inner {
  text-align: center;
  padding: 5rem 1rem 3rem;
}

.hero h1 {
  font-size: clamp(2rem, 3.8vw + 1rem, 3.2rem);
  margin: 0 0 0.5rem;
}

.hero p {
  color: var(--muted);
  margin: 0 0 1rem;
}

.cta {
  display: inline-block;
  text-decoration: none;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #0b1020;
  font-weight: 700;
  border: none;
  padding: 0.7rem 1rem;
  border-radius: 999px;
  box-shadow: var(--shadow);
  cursor: pointer;
}

.features {
  padding: 3rem 0 2rem;
}

.features h2, .contact h2 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.card {
  background: var(--card);
  padding: 1rem;
  border-radius: 1rem;
  box-shadow: var(--shadow);
  border: 1px solid rgba(255,255,255,0.06);
}

.contact {
  padding: 2rem 0 4rem;
}

.form {
  display: grid;
  gap: 1rem;
  max-width: 600px;
}

.field {
  display: grid;
  gap: 0.35rem;
}

input, textarea {
  width: 100%;
  background: #0f1530;
  border: 1px solid rgba(255,255,255,0.12);
  color: var(--text);
  padding: 0.7rem 0.8rem;
  border-radius: 0.8rem;
  outline: none;
}

input:focus, textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(124,156,255,0.2);
}

.hidden { display: none; }

.site-footer {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 1rem 0;
  color: var(--muted);
}

/* Responsive */
@media (max-width: 800px) {
  .grid { grid-template-columns: 1fr; }
  .menu-toggle { display: inline-block; }
  .links { display: none; }
  .links.open { display: flex; flex-direction: column; gap: 0.5rem; }
}