* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: "Segoe UI", sans-serif;
  background: linear-gradient(160deg, #2b3a67, #354a9d, #5d6bc4);
  color: white;
  text-align: center;
}

main {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem;
}

h1,
h2 {
  line-height: 1.2;
}

h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
}

h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
  color: #e0f7ee;
}

.subtitle {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: rgba(224, 247, 238, 0.6);
  font-weight: 400;
  font-style: italic;
}

@media (max-width: 600px) {
  h1 {
    font-size: 2.2rem;
  }

  .subtitle {
    font-size: 1.2rem;
  }

  .info-box {
    padding: 1rem;
  }
}

a:focus,
.button:focus {
  outline: 3px solid #e0f7ee;
  outline-offset: 2px;
}

.button:active {
  transform: translateY(0);
  box-shadow: none;
}

img {
  max-width: 100%;
  height: auto;
}

p {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  line-height: 1.5;
}

.info-box {
  background-color: rgba(255, 255, 255, 0.1);
  padding: 1.5rem;
  border-radius: 12px;
  margin-bottom: 2rem;
}

.info-box p {
  margin-bottom: 1rem;
}

main img {
  border-radius: 12px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.3);
  margin-bottom: 2rem;
}

.button {
  display: inline-block;
  background-color: white;
  color: #1f4037;
  border: none;
  padding: 0.75rem 1.5rem;
  font-weight: bold;
  border-radius: 8px;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.3s ease;
  margin-bottom: 1rem;
}

.button:hover {
  background-color: #e0f7ee;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

hr {
  width: 50%;
  margin: 2rem auto;
  background-color: rgba(255, 255, 255, 0.2);
  height: 2px;
  border: none;
  border-radius: 1px;
}

footer {
  font-size: 0.9rem;
  background-color: #2b3a67;
  /* darker blue */
  padding: 1rem;
  color: rgba(255, 255, 255, 0.85);
  /* semi-transparent white text */
}

footer a {
  color: white;
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
  color: #e0f7ee;
}