/* -------------------- Responsive Reset & Base -------------------- */
* { box-sizing: border-box; }
body {
  font-family: 'Poppins', sans-serif;
  margin: 0;
  padding: 0;
  color: #222;
  background-image: url('bg.jpg');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  width: 100%;
}

/* -------------------- Header -------------------- */
#main-header {
  width: 100%;
  background: rgba(0, 51, 102, 0.85);
  padding: 22px 12px;
  text-align: center;
  box-shadow: 0 3px 8px rgba(0,0,0,0.25);
}
#logo {
  width: 110px;
  height: auto;
  display: block;
  margin: 0 auto 10px auto;
  border-radius: 50%;
  object-fit: cover;
  animation: fade-in 1.4s ease;
}
#main-header h1 {
  color: white;
  margin: 0;
  font-size: 32px;
  font-weight: 600;
  text-align: center;
  animation: slide-down 1s ease;
}

/* -------------------- Content Box -------------------- */
.content-box {
  background: rgba(255, 255, 255, 0.92);
  margin: 40px auto;
  padding: 30px;
  width: 90%;
  max-width: 800px;
  text-align: center;
  border-radius: 16px;
  border: 1px solid #d0d7dd;
  box-shadow: 0 4px 15px rgba(0,0,0,0.12);
}
.content-box p {
  font-size: 18px;
  line-height: 1.6;
  margin: 0 0 12px 0;
}

/* -------------------- Image Styling -------------------- */
#main-img {
  width: 100%;
  max-width: 550px;
  display: block;
  height: auto;
  border-radius: 14px;
  margin: 20px auto;
  object-fit: cover;
  transition: transform 0.35s ease;
}
#main-img:hover { transform: scale(1.05); }

/* -------------------- List Styling -------------------- */
.feature-list { list-style: none; padding: 0; margin: 18px 0; }
.feature-list li {
  margin-bottom: 8px;
  font-size: 17px;
}

/* -------------------- Premium Button -------------------- */
.premium-btn {
  padding: 14px 30px;
  margin-top: 20px;
  background: linear-gradient(45deg, #0077ff, #00c6ff);
  color: white;
  border: none;
  border-radius: 30px;
  cursor: pointer;
  font-size: 18px;
  font-weight: 600;
  box-shadow: 0 6px 18px rgba(0,0,0,0.18);
  transition: 0.35s;
}
.premium-btn:hover {
  background: linear-gradient(45deg, #005fcc, #00aadd);
  transform: translateY(-3px) scale(1.03);
}

/* -------------------- Footer -------------------- */
footer {
  background: rgba(0, 51, 102, 0.9);
  padding: 15px;
  color: white;
  text-align: center;
  margin-top: 25px;
  font-size: 15px;
}

/* -------------------- Animations -------------------- */
@keyframes fade-in {
  from { opacity: 0; } to { opacity: 1; }
}
@keyframes slide-down {
  from { transform: translateY(-20px); opacity: 0; } to { transform: translateY(0); opacity: 1; }
}
@keyframes move-up {
  from { transform: translateY(30px); opacity: 0; } to { transform: translateY(0); opacity: 1; }
}
.animate-up { animation: move-up 1.1s ease; }

/* -------------------- Responsive Media Queries -------------------- */
@media (max-width: 768px) {
  #main-header h1 { font-size: 24px; }
  .content-box { padding: 18px; width: 94%; }
  .premium-btn { width: 100%; padding: 14px; font-size: 17px; }
  #logo { width: 80px; }
}
@media (max-width: 480px) {
  #main-header h1 { font-size: 20px; }
  .content-box p { font-size: 16px; }
  .feature-list li { font-size: 15px; }
  .premium-btn { font-size: 16px; border-radius: 22px; }
}