body {
  background-color: #1e293b;
  background-image: url(../img/nt-office.jpg);
  color: #e2e8f0;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  font-family: "Poppins", sans-serif;
  background-size: cover;
  background-position: center center;
}
.container {
  max-width: 600px;
  text-align: center;
  background-color: #334155;
  padding: 40px;
  border-radius: 15px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(2px) saturate(140%);
  background-color: rgba(51, 65, 85, 0.65);
  border: 1.5px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3),
    0 1.5px 12px rgba(255, 255, 255, 0.08) inset;
}
.logo {
  max-width: 200px;
  margin-bottom: 30px;
  filter: drop-shadow(0 0 16px #38bdf8aa);
}
.glowing-logo {
  transition: filter 0.7s, transform 0.7s;
}
.glowing-logo:hover {
  filter: drop-shadow(0 0 14px #ffffffcc);
  transform: scale(1.1);
}
h1 {
  font-size: 2.5rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 15px;
  letter-spacing: 1.5px;
  text-shadow: 0 2px 16px #0ea5e9cc, 0 1px 0 #000;
}
p {
  font-size: 1.1rem;
  margin-bottom: 30px;
  font-size: 1.15rem;
  color: #ffffff;
  text-shadow: 0 1px 8px #0ea5e966;
}
p.fw-bold {
  color: #ffffff;
  letter-spacing: 0.5px;
}
.btn-primary {
  background-color: #ffc107;
  border-color: #ffc107;
  color: #1e293b;
  font-weight: 600;
  padding: 12px 30px;
  font-size: 1.1rem;
  transition: all 0.3s ease;
  box-shadow: 0 0 16px 4px #ffe06699, 0 0 32px 8px #ffe06633;
  text-shadow: 0 1px 8px #fffbe6cc;
  filter: drop-shadow(0 0 12px #ffe06688);
  transition: box-shadow 0.3s cubic-bezier(0.4, 2, 0.6, 1), filter 0.3s;
  overflow: visible;
}
.btn-primary:hover {
  background-color: #ffffff;
  border-color: #ffffff;
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(255, 193, 7, 0.4);
  color: #1e293b;
}
#btn-cctv {
  position: relative;
  overflow: visible;
}
.firefly-container {
  pointer-events: none;
  position: absolute;
  left: 50%;
  top: 50%;
  width: 180px;
  height: 80px;
  transform: translate(-50%, -50%);
  z-index: 2;
}
.firefly {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    #ffe066 60%,
    #fffbe6 100%,
    transparent 100%
  );
  opacity: 0.85;
  box-shadow: 0 0 12px 4px #ffe06688, 0 0 24px 8px #fffbe644;
  animation: firefly-blink 2.5s infinite alternate;
  will-change: transform, opacity;
}
@keyframes firefly-blink {
  0% {
    opacity: 0.7;
    filter: blur(0.5px);
  }
  50% {
    opacity: 1;
    filter: blur(1.5px);
  }
  100% {
    opacity: 0.6;
    filter: blur(0.5px);
  }
}
a span {
  color: inherit;
  text-shadow: inherit;
}
a span img {
  width: 36px;
}
.contact-info {
  margin-top: 40px;
  font-size: 0.9rem;
  opacity: 0.8;
  margin-top: 48px;
  color: #ffffff;
}
.contact-info a {
  color: #ffffff;
  text-decoration: none;
  font-weight: 500;
}
.contact-info a.wa:hover {
  color: #25d366;
  position: relative;
  top: -5px;
  transition: top 0.2s;
}
.contact-info a.email:hover {
  color: #9e85e2ec;
  position: relative;
  top: -5px;
  transition: top 0.2s;
}
.underline-effect {
  position: relative;
  display: inline-block;
  text-decoration: none;
  color: inherit;
}
.underline-effect::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: #25d366;
  transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.email.underline-effect:hover::after {
  background: #9e85e2ec;
}
.underline-effect:hover::after {
  width: 100%;
}
@media (max-width: 767px) {
  body {
    background-position: center center !important;
  }
}