/* Global */
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: "Poppins", sans-serif;
  background: linear-gradient(135deg, #101820, #303841);
  color: #fff;
  overflow-x: hidden;
}

/* Navbar */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 60px;
  background: rgba(255,255,255,0.05);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,0.1);
  position: sticky;
  top: 0;
  z-index: 1000;
}
.logo { font-size: 1.8rem; font-weight: 700; }
.highlight { color: #00ffff; }
.nav-links ul { display: flex; gap: 30px; list-style: none; }
.nav-links a {
  color: #fff;
  text-decoration: none;
  font-weight: 500;
  position: relative;
  transition: color .3s;
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -5px;
  width: 0;
  height: 2px;
  background: #00ffff;
  transition: width .3s ease;
}
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.menu-icon { display: none; font-size: 1.5rem; cursor: pointer; }

/* Hero Section */
.hero {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  text-align: center;
  padding: 100px 40px;
  background: linear-gradient(to bottom right, #0d7377, #14ffec);
  color: #fff;
  border-radius: 0 0 100px 100px;
}
.hero-content { max-width: 500px; }
.hero h1 { font-size: 2.8rem; margin-bottom: 16px; }
.hero p { font-size: 1.1rem; margin-bottom: 20px; }
.btn {
  background: linear-gradient(90deg, #00adb5, #14ffec);
  color: #000;
  padding: 12px 22px;
  border: none;
  border-radius: 8px;
  font-weight: 700;
  cursor: pointer;
  transition: transform .2s ease, box-shadow .25s;
}
.btn:hover { transform: translateY(-3px); box-shadow: 0 6px 18px rgba(20,255,236,0.24); }
.hero-img img {
  width: 380px;
  border-radius: 16px;
  transform: rotate(-10deg);
  box-shadow: 0 0 25px rgba(0,0,0,0.4);
  margin-top: 30px;
}

/* Intro Section */
.intro-section {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 80px 60px;
  gap: 120px;
  flex-wrap: wrap;
}
.intro-text h3 { color: #14ffec; font-size: 1.8rem; margin-bottom: 10px; }
.intro-text p { font-size: 1.05rem; max-width: 300px; }
.intro-heading h1 { font-size: 2rem; color: #14ffec; font-style: italic; }

/* Cards Section */
.cards-section {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 50px;
  padding: 60px 40px;
}
.card {
  background: rgba(255,255,255,0.08);
  backdrop-filter: blur(10px);
  border-radius: 12px;
  width: 320px;
  text-align: center;
  padding: 20px;
  box-shadow: 0 0 15px rgba(20,255,236,0.1);
  transition: transform .3s ease, box-shadow .3s ease;
}
.card img {
  width: 100%;
  border-radius: 10px;
  margin-bottom: 12px;
  box-shadow: 0 0 10px rgba(0,0,0,0.3);
}
.card h3 { color: #14ffec; font-size: 1.3rem; }
.card:hover { transform: translateY(-8px); box-shadow: 0 10px 25px rgba(20,255,236,0.2); }

/* Footer */
.footer {
  background: #0a0a0a;
  display: flex;
  justify-content: space-around;
  flex-wrap: wrap;
  padding: 60px 30px;
}
.footer h2, .footer h3 { color: #14ffec; margin-bottom: 10px; }
.footer p, .footer a { color: #fff; text-decoration: none; }
.footer a:hover { text-decoration: underline; }
.footer ul { list-style: none; padding: 0; }
.bottom-bar {
  text-align: center;
  background: #050505;
  padding: 20px;
  color: #aaa;
  font-size: .9rem;
}

/* Animations */
[data-animate] { opacity: 0; transform: translateY(30px); transition: all 1s ease-out; }
[data-animate].visible { opacity: 1; transform: translateY(0); }

/* Responsive */
@media (max-width: 768px) {
  .navbar { padding: 20px 30px; }
  .menu-icon { display: block; }
  .nav-links ul { display: none; }
  .hero { flex-direction: column; border-radius: 0 0 70px 70px; padding: 80px 20px; }
  .intro-section { padding: 60px 20px; gap: 60px; }
  .cards-section { padding: 40px 20px; }
  .hero h1 { font-size: 2.2rem; }
}

/* Under Construction Popup */
#popup-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.7);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 5000;
  backdrop-filter: blur(4px);
}

#popup-box {
  background: rgba(255,255,255,0.1);
  border: 1px solid #14ffec;
  padding: 30px 40px;
  border-radius: 14px;
  text-align: center;
  box-shadow: 0 0 25px rgba(20,255,236,0.3);
}

#popup-box h2 {
  margin-bottom: 10px;
  color: #14ffec;
  font-size: 1.8rem;
  font-weight: 700;
}

#popup-box p {
  margin-bottom: 20px;
  font-size: 1.1rem;
  color: #fff;
}

#close-popup {
  padding: 10px 20px;
  background: linear-gradient(90deg, #00adb5, #14ffec);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-weight: bold;
  color: #000;
  transition: transform .2s ease;
}

#close-popup:hover {
  transform: scale(1.05);
}