/* RESET */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* BODY BACKGROUND */
body {
  font-family: Arial, sans-serif;
  color: white;
  min-height: 100vh;
  background: url('images/smartdata.png') no-repeat center center/cover;
}

/* DARK OVERLAY */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 20, 0.6);
  z-index: -1;
}

/* HEADER */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 70px;
  display: flex;
  align-items: center;
  padding: 0 30px;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(6px);
  z-index: 10;
}

/* LOGO */
.logo {
  height: 40px;
}

/* MAIN */
main {
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 90px 20px 70px;
}

/* CONTENT BOX */
.hero {
  max-width: 900px;
  margin: 0 auto;
  padding: 30px;
  background: rgba(0, 0, 0, 0.25);
  backdrop-filter: blur(4px);
  border-radius: 10px;
}

.hero h1 {
  font-size: 3.2rem;
  margin-bottom: 15px;
  font-weight: 600;
  letter-spacing: 1px;
  text-shadow: 0 0 25px rgba(30, 144, 255, 0.5);
}

.hero p {
  font-size: 1.1rem;
  line-height: 1.7;
  color: rgba(255,255,255,0.85);
}

/* FOOTER */
.footer {
  position: fixed;
  bottom: 0;
  width: 100%;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(6px);
  color: rgba(255, 255, 255, 0.7);
  text-align: center;
  padding: 12px 10px;
  font-size: 0.85rem;
  border-top: 1px solid rgba(30, 144, 255, 0.3);
  z-index: 10;
}

/* FOOTER LINKS */
.footer a,
.footer a:link,
.footer a:visited,
.footer a:hover,
.footer a:active {
  color: #ffffff !important;
  text-decoration: none !important;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;

  background: radial-gradient(
    circle at center,
    rgba(30,144,255,0.25) 0%,
    rgba(30,144,255,0.15) 10%,
    rgba(30,144,255,0.05) 25%,
    transparent 60%
  );

  animation: pulseCorridor 4s ease-out infinite;
}

@keyframes pulseCorridor {
  0% {
    transform: scale(0.6);
    opacity: 0;
  }
  30% {
    opacity: 0.6;
  }
  100% {
    transform: scale(1.8);
    opacity: 0;
  }
}