body {
  margin: 0;
  font-family: Arial, sans-serif;
  background-color: #001f3f;
  color: #ffffff;
}

header {
  height: 100vh;
  background: linear-gradient(rgba(0, 15, 40, 0.8), rgba(0, 15, 40, 0.8)),
              url('header.jpg') center/cover no-repeat;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
}

header h1 {
  font-size: 3rem;
  margin: 0 20px;
}

header p {
  font-size: 1.2rem;
  max-width: 600px;
  margin: 20px;
}

header a.button {
  display: inline-block;
  margin-top: 30px;
  padding: 15px 30px;
  background-color: #004080;
  color: #ffffff;
  text-decoration: none;
  font-size: 1.2rem;
  border-radius: 5px;
  transition: background 0.3s;
}

header a.button:hover {
  background-color: #0055aa;
}

section {
  padding: 60px 20px;
  text-align: center;
}

section h2 {
  font-size: 2.5rem;
  margin-bottom: 20px;
}

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

section.about {
  background: linear-gradient(rgba(0, 15, 40, 0.85), rgba(0, 15, 40, 0.85)),
              url('header.jpg') center/cover no-repeat;
}

.features {
  display: flex;
  flex-direction: column;
  max-width: 800px;
  margin: 0 auto;
  gap: 20px;
}

.features .feature {
  background-color: rgba(0, 15, 40, 0.85);
  padding: 20px;
  border-radius: 5px;
  border: 1px solid #004080;
}

.features .feature h3 {
  margin: 0 0 10px;
  font-size: 1.5rem;
  color: #ffffff;
}

.features .feature p {
  margin: 0;
  color: #dddddd;
}

form {
  max-width: 600px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 15px;
  background-color: rgba(0, 15, 40, 0.85);
  padding: 30px;
  border-radius: 5px;
}

form label {
  text-align: left;
  font-weight: bold;
  color: #ffffff;
}

form input, form textarea {
  padding: 10px;
  border: none;
  border-radius: 4px;
  font-size: 1rem;
}

form button {
  padding: 12px;
  background-color: #004080;
  color: #ffffff;
  border: none;
  border-radius: 5px;
  font-size: 1.2rem;
  cursor: pointer;
  transition: background 0.3s;
}

form button:hover {
  background-color: #0055aa;
}

footer {
  text-align: center;
  padding: 20px;
  background-color: #000f20;
  font-size: 0.9rem;
  color: #cccccc;
}

.popup {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.8);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.popup-content {
  background-color: #001f3f;
  padding: 30px;
  border-radius: 8px;
  text-align: center;
  max-width: 400px;
}

.popup-content h2 {
  margin-bottom: 15px;
  color: #ffffff;
}

.popup-content p {
  margin-bottom: 20px;
  color: #dddddd;
}

.popup-content button {
  padding: 10px 20px;
  background-color: #004080;
  color: #ffffff;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  transition: background 0.3s;
}

.popup-content button:hover {
  background-color: #0055aa;
}