/* -----------------------------
   GENERAL BODY & BACKGROUND
----------------------------- */
body {
  margin: 0;
  padding: 0;
  font-family: 'Helvetica Neue', Arial, sans-serif;
  color: #f0f0f0;
  background: linear-gradient(120deg, #0d0f2c, #1b1f4c, #0d0f2c);
  background-size: 400% 400%;
  animation: gradientShift 30s ease infinite;
}

@keyframes gradientShift {
  0% {background-position: 0% 50%;}
  50% {background-position: 100% 50%;}
  100% {background-position: 0% 50%;}
}

/* -----------------------------
   HEADER & NAVIGATION
----------------------------- */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  background: rgba(10, 12, 25, 0.85);
  backdrop-filter: blur(5px);
}

nav a {
  color: #f0f0f0;
  margin: 0 1rem;
  text-decoration: none;
  position: relative;
  transition: all 0.3s ease;
}

nav a:hover {
  color: #9c6eff;
}

nav a::after {
  content: '';
  display: block;
  height: 2px;
  background: #9c6eff;
  width: 0%;
  transition: width 0.3s ease;
  position: absolute;
  bottom: -4px;
  left: 0;
}

nav a:hover::after {
  width: 100%;
}

/* -----------------------------
   BUTTONS / CALL-TO-ACTION
----------------------------- */
button, .btn {
  padding: 0.7rem 1.5rem;
  font-size: 1rem;
  border: none;
  border-radius: 15px;
  cursor: pointer;
  transition: all 0.3s ease;
  color: #fff;
  background: linear-gradient(135deg, #3a0ca3, #7209b7, #f72585);
  box-shadow: 0 4px 15px rgba(156, 110, 255, 0.5);
}

button:hover, .btn:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 20px rgba(156, 110, 255, 0.8);
}

/* -----------------------------
   CARDS / CONTENT BLOCKS
----------------------------- */
.card {
  background: rgba(20, 24, 50, 0.85);
  border-radius: 15px;
  padding: 1.5rem;
  margin: 1rem;
  transition: all 0.3s ease;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.5);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(156, 110, 255, 0.6);
}

/* -----------------------------
   TYPOGRAPHY
----------------------------- */
h1, h2, h3, h4, h5 {
  font-family: 'Orbitron', sans-serif;
  color: #f0f0f0;
}

p {
  font-family: 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  color: #ddd;
}

/* -----------------------------
   RESPONSIVE / MOBILE
----------------------------- */
@media (max-width: 768px) {
  nav {
    display: flex;
    flex-direction: column;
  }

  nav a {
    margin: 0.5rem 0;
  }

  .card {
    margin: 1rem 0;
  }
}