:root {
  --bg: #0b0c10;
  --bg-alt: #111217;
  --text: #e8edf2;
  --muted: #b9c3cf;
  --card: #14151c;
  --card-stroke: rgba(255, 255, 255, 0.06);
  --primary: #00bfff;
  --accent: #8e2de2;
  --radius: 14px;
  --container: 1200px;
}

/* Reset & Base */
*,
*::before,
*::after {
  box-sizing: border-box;
}
body {
  margin: 0;
  font-family: "Inter", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}
a {
  color: var(--primary);
  text-decoration: none;
}

/* Navbar */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 12, 16, 0.7);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--card-stroke);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
}
.brand-word {
  font-weight: 800;
  font-size: 22px;
}
.brand-ai {
  background: linear-gradient(45deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.nav-links {
  display: flex;
  gap: 18px;
}

/* Hero */
.hero {
  position: relative;
  min-height: 90vh;
  display: grid;
  place-items: center;
  border-bottom: 1px solid var(--card-stroke);
}
#hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(1000px 500px at 50% 10%, #14151c, #0b0c10);
}
.hero-inner {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 80px 24px;
}
.hero-title {
  font-size: clamp(32px, 5vw, 60px);
  font-weight: 800;
}
.glow {
  background: linear-gradient(45deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-sub {
  color: var(--muted);
  max-width: 750px;
  margin: 0 auto 30px;
}
.hero-cta {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Sections */
.section {
  padding: 96px 0;
}
.section.alt {
  background: var(--bg-alt);
}
.section-head {
  text-align: center;
  margin-bottom: 36px;
}
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}
.card,
.app-card,
.contact-card {
  background: linear-gradient(180deg, var(--card), #0f1016);
  border: 1px solid var(--card-stroke);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
}
.contact-card form input,
.contact-card form textarea {
  width: 100%;
  padding: 10px;
  margin-bottom: 10px;
  border-radius: 8px;
  border: 1px solid var(--card-stroke);
  background: #101117;
  color: var(--text);
}

/* Footer */
.footer {
  text-align: center;
  padding: 24px;
  border-top: 1px solid var(--card-stroke);
  color: var(--muted);
}