/* Reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  scroll-behavior: smooth;
}

/* Background watermark */
body {
  font-family: 'Segoe UI', sans-serif;
  background: url('bg-watermark.jpg') no-repeat center center fixed;
  background-size: cover;
  color: #f4f4f4;
}

/* Header */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 40px;
  background-color: #111827cc;
  position: sticky;
  top: 0;
  z-index: 1000;
}

header .logo {
  font-size: 24px;
  font-weight: bold;
  color: #00ffd1;
}

nav a {
  margin-left: 20px;
  text-decoration: none;
  color: #e0e0e0;
  transition: color 0.3s ease;
}

nav a:hover {
  color: #00ffd1;
}

/* Hero section */
.hero {
  height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(0, 0, 0, 0.5);
  text-align: center;
  padding: 0 20px;
}

.hero-content h1 {
  font-size: 48px;
  animation: fadeInDown 1.2s ease-out;
}

.hero-content p {
  font-size: 20px;
  margin-top: 20px;
  animation: fadeInUp 1.5s ease-out;
}

/* Sections */
section {
  padding: 60px 40px;
  background-color: rgba(0, 0, 0, 0.6);
  margin: 20px;
  border-radius: 12px;
  animation: fadeIn 1s ease-in-out;
}

section h2 {
  color: #00ffd1;
  margin-bottom: 15px;
  font-size: 32px;
}

/* Footer */
footer {
  text-align: center;
  padding: 20px;
  background-color: #111827;
  font-size: 14px;
}

/* Animations */
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-40px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(40px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Responsive */
@media (max-width: 768px) {
  header {
    flex-direction: column;
    align-items: flex-start;
  }
  nav a {
    display: block;
    margin: 10px 0;
  }
  .hero-content h1 {
    font-size: 32px;
  }
}