body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: #f8fafc;
  color: #0f172a;
}

/* ===== PRELOADER ===== */
#preloader {
  position: fixed;
  inset: 0;
  background: #0f172a;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

#preloader img {
  width: 180px;
  animation: pulse 1.5s ease-in-out infinite alternate;
}

@keyframes pulse {
  from { opacity: 0.6; }
  to { opacity: 1; }
}

/* ===== PAGE ===== */
.page {
  display: none;
  min-height: 100vh;
  text-align: center;
  padding: 50px 20px;
  box-sizing: border-box;
}

.header img {
  width: 150px;
  margin-bottom: 10px;
}

.visits {
  font-size: 14px;
  color: #475569;
}

.main {
  margin-top: 40px;
}

.main h1 {
  font-size: 28px;
  margin-bottom: 15px;
}

.main p {
  max-width: 520px;
  margin: auto;
  font-size: 16px;
  color: #475569;
}

.footer {
  margin-top: 60px;
  font-size: 13px;
  color: #64748b;
}

.footer img {
  width: 110px;
  margin: 10px 0;
}

.copy {
  margin-top: 5px;
}

/* ===== NETSEMTEC LOGO ===== */
.netsemtec-logo {
  width: 110px;
  margin: 10px 0;
  opacity: 0.45;
  transition: opacity 0.3s ease, transform 0.3s ease;
  cursor: pointer;
}

.netsemtec-logo:hover {
  opacity: 1;
  transform: scale(1.05);
}