body {
  margin: 0;
  font-family: Inter, sans-serif;
  background: #050505;
  color: white;
  overflow-x: hidden;
}

/* ── Particles ── */
#particles-js {
  position: fixed;
  width: 100%;
  height: 100%;
  z-index: -1;
}

/* ── Intro screen ── */
#intro {
  position: fixed;
  inset: 0;
  background: black;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  transition: opacity 1s ease;
}

#intro video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.introText {
  position: relative;
  font-family: Orbitron, sans-serif;
  font-size: 50px;
  letter-spacing: 4px;
  text-align: center;
  z-index: 1;
}

#enterBtn {
  position: relative;
  z-index: 1;
  margin-top: 30px;
  padding: 15px 40px;
  font-size: 1.1em;
  font-family: Orbitron, sans-serif;
  background: transparent;
  border: 2px solid #00FFFF;
  border-radius: 10px;
  cursor: pointer;
  color: #00FFFF;
  box-shadow: 0 0 20px #00FFFF44;
  transition: 0.3s;
  letter-spacing: 2px;
}

#enterBtn:hover {
  background: #00FFFF;
  color: #000;
  box-shadow: 0 0 40px #00FFFF;
  transform: scale(1.05);
}

/* ── Nav ── */
nav {
  display: flex;
  justify-content: space-between;
  padding: 30px 50px;
  align-items: center;
}

.logo {
  width: 110px;
}

.navLinks a {
  margin-left: 30px;
  color: white;
  text-decoration: none;
  opacity: 0.7;
  transition: opacity 0.2s;
}

.navLinks a:hover {
  opacity: 1;
}

/* ── Hero ── */
.hero {
  padding: 160px 20px;
  text-align: center;
}

.hero h1 {
  font-size: 70px;
  font-family: Orbitron, sans-serif;
  background: linear-gradient(90deg, #00eaff, #8a2cff, #ff3c7b);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.hero p {
  max-width: 650px;
  margin: auto;
  font-size: 20px;
  opacity: 0.8;
}

/* ── Apps ── */
.apps {
  padding: 140px 20px;
  text-align: center;
}

.appGrid {
  display: flex;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
  margin-top: 70px;
}

.appCard {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 18px;
  padding: 30px;
  width: 260px;
  transition: 0.35s;
}

.appCard:hover {
  transform: translateY(-12px);
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.7);
}

.appCard img {
  width: 100%;
  border-radius: 12px;
  margin-bottom: 15px;
}

/* ── Lab ── */
.lab {
  padding: 140px 20px;
  text-align: center;
  max-width: 700px;
  margin: auto;
}

.symbol {
  width: 160px;
  margin-top: 50px;
  opacity: 0.8;
}

/* ── Footer ── */
footer {
  padding: 80px;
  text-align: center;
  opacity: 0.6;
}