* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Inter', sans-serif;
}

body {
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center; /* CENTER vertically */
  align-items: center; /* CENTER horizontally */
  color: white;
  overflow: hidden;


  background: linear-gradient(270deg, #4facfe, #6a5acd, #8a2be2, #4facfe);
  background-size: 600% 600%;


  animation: gradientMove 35s ease infinite;
}

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

.container {
  text-align: center;
  backdrop-filter: blur(12px);
  background: rgba(0,0,0,0.25);
  padding: 50px;
  border-radius: 24px;
  box-shadow: 0 15px 50px rgba(0,0,0,0.4);
}

h1 {
  font-size: 3rem;
  margin-bottom: 10px;
  letter-spacing: 2px;
}

p {
  font-size: 1.2rem;
  opacity: 0.9;
  margin-bottom: 25px;
}

.pdf-section {
  margin-top: 20px;
}

.pdf-section a {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 30px;
  background: white;
  color: black;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
}

.pdf-section a:hover {
  transform: scale(1.05);
  box-shadow: 0 5px 20px rgba(0,0,0,0.3);
}

footer {
  position: absolute;
  bottom: 20px;
  font-size: 0.9rem;
  opacity: 0.8;
}

/* ======================= MOBILE RESPONSIVE ======================= */

@media (max-width: 600px) {

  body {
    padding: 0 16px; /* proper mobile spacing */
  }

  .container {
    max-width: 320px; /* tighter mobile card */
    width: 100%;
    padding: 25px 18px;
    border-radius: 20px;
  }

  h1 {
    font-size: 1.8rem;
  }

  p {
    font-size: 0.95rem;
  }

  .pdf-section a {
    width: 100%; /* full-width button looks better on mobile */
    text-align: center;
    padding: 12px;
    font-size: 0.9rem;
  }

  footer {
    font-size: 0.7rem;
    bottom: 12px;
  }
}

  h1 {
    font-size: 2rem;
  }

  p {
    font-size: 1rem;
  }

  .pdf-section a {
    padding: 10px 18px;
    font-size: 0.9rem;
  }

  footer {
    font-size: 0.75rem;
    bottom: 10px;
  }