body {
  margin: 0;
  font-family: Arial, sans-serif;
  background-color: #121212;
  color: #f0f0f0;
}

/* Header */
.top-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 20px;
  background: linear-gradient(180deg, #1e1e1e 0%, #2a2a2a 100%);
  border-bottom: 2px solid #4fc3f7;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: transform 0.3s ease-in-out, opacity 0.3s ease-in-out;
}

.logo {
  font-size: 1.3rem;
  font-weight: 700;
  color: #4fc3f7;
  font-style: italic;
  letter-spacing: 1px;
  text-shadow: 0 0 5px rgba(79, 195, 247, 0.5);
}

/* Navigation */
nav {
  display: flex;
  gap: 25px;
}

nav a {
  color: #f0f0f0;
  text-decoration: none;
  font-size: 1rem;
  font-weight: 500;
  padding: 8px 12px;
  border-radius: 4px;
  transition: background-color 0.3s, color 0.3s;
}

nav a:hover {
  color: #ffffff;
  background-color: #4fc3f733;
}

/* Hamburger menu button */
.hamburger {
  display: none;
  font-size: 36px;
  background: none;
  border: none;
  color: #4fc3f7;
  cursor: pointer;
  padding: 10px 15px;
  border-radius: 8px;
  transition: background-color 0.3s, transform 0.3s;
}

.hamburger:hover {
  background-color: #4fc3f71a;
  transform: scale(1.1);
}

/* Close button */
.close-btn {
  display: none;
  position: absolute;
  top: 10px;
  right: 10px;
  background: none;
  border: none;
  color: #4fc3f7;
  font-size: 24px;
  font-weight: 700;
  font-style: italic;
  letter-spacing: 1px;
  text-shadow: 0 0 5px rgba(79, 195, 247, 0.5);
  cursor: pointer;
  padding: 5px 10px;
  border-radius: 50%;
  transition: background-color 0.3s;
}

.close-btn:hover {
  background-color: #4fc3f71a;
}

/* Mobile navigation menu */
@media (max-width: 768px) {
  nav {
    display: none;
    position: fixed;
    top: 0;
    right: -100%;
    width: 250px;
    height: 100vh;
    flex-direction: column;
    background: #1e1e1e;
    padding: 20px;
    border-left: 2px solid #4fc3f7;
    box-shadow: -4px 0 12px rgba(0, 0, 0, 0.5);
    transition: right 0.3s ease-in-out;
  }

  nav.show {
    display: flex;
    right: 0;
  }

  nav a {
    padding: 15px;
    font-size: 1.2rem;
    text-align: center;
    border-bottom: 1px solid #2c2c2c;
    transition: background-color 0.3s, transform 0.3s;
  }

  nav a:hover {
    background-color: #4fc3f71a;
    transform: translateX(5px);
  }

  .hamburger {
    display: block;
  }

  .close-btn {
    display: block;
  }
}

/* Buttons */
.btn {
  display: inline-block;
  background-color: #4fc3f7;
  color: #000;
  padding: 12px 24px;
  border-radius: 6px;
  font-weight: bold;
  text-decoration: none;
  transition: background-color 0.3s, transform 0.3s;
}

.btn:hover {
  background-color: #03a9f4;
  transform: translateY(-2px);
}

/* Footer */
footer {
  background: linear-gradient(180deg, #2a2a2a 0%, #1e1e1e 100%);
  padding: 40px 20px;
  text-align: center;
  color: #aaaaaa;
  border-top: 2px solid #4fc3f7;
  box-shadow: 0 -2px 4px rgba(0, 0, 0, 0.3);
}

footer p {
  margin: 0;
  font-size: 0.9rem;
  font-weight: 500;
}

.footer-links {
  margin-top: 15px;
}

.footer-links a {
  color: #aaaaaa;
  margin: 0 12px;
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.3s;
}

.footer-links a:hover {
  color: #4fc3f7;
}

/* Responsive tweaks */
@media (max-width: 600px) {
  .top-header {
    padding: 10px 15px;
  }

  .logo {
    font-size: 1.1rem;
  }

  footer {
    padding: 30px 15px;
  }
    }