body {
  margin: 0;
  font-family: "Segoe UI", Arial, sans-serif;
  background: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), rgba(10, 10, 10, 0.95)),
              url("background1.jpeg") no-repeat center center fixed;
  background-size: cover;
  color: white;
  overflow-x: hidden;
  position: relative;
}

/* ====== Radar Wave Effect ====== */
body::before {
  content: "";
  position: fixed;
  top: 50%;
  left: 50%;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgb(255, 255, 255) 0%, transparent 70%);
  transform: translate(-50%, -50%);
  animation: radarPulse 4s infinite;
  z-index: 0;
}

@keyframes radarPulse {
  0% {
    transform: translate(-50%, -50%) scale(0.5);
    opacity: 0.6;
  }
  70% {
    transform: translate(-50%, -50%) scale(3);
    opacity: 0;
  }
  100% {
    transform: translate(-50%, -50%) scale(3);
    opacity: 0;
  }
}

/* Floating Particles */
body::after {
  content: "";
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(circle, rgba(0, 247, 255, 0.25) 2px, transparent 2px);
  background-size: 120px 120px;
  animation: moveParticles 20s linear infinite;
  z-index: 0;
  pointer-events: none;
}
@keyframes moveParticles {
  from { background-position: 0 0; }
  to { background-position: 200px 200px; }
}

/* Ensure content is above effects */
header, section, footer {
  position: relative;
  z-index: 1;
}

/* ================== HERO ================== */
header {
  text-align: center;
  padding: 120px 20px;
  position: relative;
  max-width: 1000px;
  margin: auto;
}

header h1 {
  font-size: 52px;
  font-weight: bold;
  color: #00f7ff;
  margin-bottom: 20px;
  /* Softer glow effect */
  text-shadow: 
    0 0 6px #00f7ff,
    0 0 12px #00e0e6,
    0 0 20px rgba(0, 247, 255, 0.6);
}

header p {
  font-size: 20px;
  color: #ccc;
  margin-bottom: 40px;
  line-height: 1.6;
}

header button {
  background: #00f7ff;
  border: none;
  padding: 15px 40px;
  border-radius: 30px;
  font-weight: bold;
  color: #000;
  font-size: 16px;
  cursor: pointer;
  transition: 0.3s;
  box-shadow: 0 0 15px #00f7ff;
}

header button:hover {
  background: #00cfd1;
  box-shadow: 0 0 25px #00f7ff, 0 0 50px #00f7ff;
}

/* ================== SECTIONS ================== */
section {
  padding: 80px 20px;
  text-align: center;
  max-width: 1200px;
  margin: auto;
}

section h2 {
  font-size: 36px;
  color: #00f7ff;
  margin-bottom: 50px;
  text-shadow: 0 0 8px #00f7ff;
}

/* Grid Layout */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 30px;
  margin-top: 30px;
}

.card {
  background: rgba(26, 26, 26, 0.9);
  padding: 40px 25px;
  border-radius: 18px;
  transition: 0.3s;
  box-shadow: 0 0 10px rgba(0, 247, 255, 0.1);
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: 0 0 25px rgba(0, 247, 255, 0.6);
}

.card i {
  font-size: 48px;
  color: #00f7ff;
  margin-bottom: 20px;
}

.card h3 {
  font-size: 22px;
  margin-bottom: 15px;
  color: #fff;
}

.card p {
  color: #bbb;
  font-size: 15px;
  line-height: 1.6;
}

/* ================== FOOTER ================== */
footer {
  text-align: center;
  padding: 30px;
  background: #0a0a0a;
  margin-top: 60px;
  font-size: 14px;
  color: #777;
}

.diagram-section {
  padding: 60px 10%;
  display: flex;
  justify-content: center;
  align-items: center;
}

.diagram-container {
  display: flex;
  gap: 40px;
  align-items: center;
  flex-wrap: wrap; /* responsive for smaller screens */
}

.diagram-image img {
  max-width: 500px;
  border-radius: 12px;
  box-shadow: 0 0 20px rgba(0, 247, 255, 0.5);
}

.diagram-info {
  max-width: 500px;
  color: #fff;
}

.diagram-info h2 {
  font-size: 28px;
  margin-bottom: 15px;
  color: #00f7ff;
  text-shadow: 0 0 6px #00f7ff, 0 0 15px rgba(0, 247, 255, 0.6);
}

.diagram-info ul {
  list-style: none;
  padding: 0;
}

.diagram-info li {
  margin: 10px 0;
  font-size: 16px;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 10px 20px;
}

.logo {
  width: 65px;
  height: 65px;
  filter: drop-shadow(0 0 10px #00f0ff);
}

.site-title {
  font-size: 1.8rem;
  font-weight: bold;
  color: #00f0ff;
  text-shadow: 0 0 10px #00f0ff, 0 0 25px #00cfff;
}

.about-section {
  background: rgba(0, 0, 0, 0.6);
  padding: 60px 20px;
  color: #fff;
  text-align: center;
}

.about-section h2 {
  font-size: 2rem;
  margin-bottom: 20px;
  color: #00e5ff;
  text-shadow: 0 0 15px #00e5ff;
}

.about-section p {
  max-width: 800px;
  margin: 0 auto 30px auto;
  font-size: 1.1rem;
  line-height: 1.6;
}

.about-section h3 {
  font-size: 1.5rem;
  margin-bottom: 15px;
  color: #00e5ff;
}

.tech-list {
  list-style: none;
  padding: 0;
  max-width: 700px;
  margin: 0 auto;
  text-align: left;
}

.tech-list li {
  background: rgba(255, 255, 255, 0.05);
  margin: 10px 0;
  padding: 12px 15px;
  border-left: 4px solid #00e5ff;
  border-radius: 8px;
  font-size: 1.05rem;
  transition: all 0.3s ease;
}

.tech-list li:hover {
  background: rgba(0, 229, 255, 0.15);
  transform: translateX(5px);
}

.use-cases-section {
  background: rgba(0, 0, 0, 0.7);
  padding: 70px 20px;
  text-align: center;
  color: #fff;
}

.use-cases-section h2 {
  font-size: 2rem;
  margin-bottom: 40px;
  color: #00e5ff;
  text-shadow: 0 0 15px #00e5ff, 0 0 30px #00cfff;
}

.use-cases-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 25px;
  max-width: 1100px;
  margin: 0 auto;
}

.use-case-card {
  background: rgba(255, 255, 255, 0.05);
  padding: 25px 20px;
  border-radius: 12px;
  border: 1px solid rgba(0, 229, 255, 0.3);
  transition: all 0.4s ease;
  box-shadow: 0 0 15px rgba(0, 229, 255, 0.1);
}

.use-case-card h3 {
  font-size: 1.3rem;
  margin-bottom: 12px;
  color: #00e5ff;
}

.use-case-card p {
  font-size: 1rem;
  line-height: 1.5;
  color: #ddd;
}

.use-case-card:hover {
  transform: translateY(-8px) scale(1.03);
  border-color: #00e5ff;
  box-shadow: 0 0 25px rgba(0, 229, 255, 0.4);
}

.demo-btn {
  background: linear-gradient(135deg, #00f0ff, #007bff);
  color: white;
  border: none;
  padding: 12px 28px;
  font-size: 16px;
  font-weight: bold;
  border-radius: 8px;
  cursor: pointer;
  box-shadow: 0 0 12px rgba(0, 240, 255, 0.6), 
              0 0 24px rgba(0, 240, 255, 0.4);
  transition: all 0.3s ease-in-out;
}

.demo-btn:hover {
  transform: scale(1.08);
  box-shadow: 0 0 20px rgba(0, 240, 255, 0.9), 
              0 0 40px rgba(0, 240, 255, 0.7);
}