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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f8f6fc;
  color: #302b3a;
  min-height: 100vh;
}

.app {
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  padding: 24px;
}

header {
  background: linear-gradient(135deg, #8d6ccf, #b99be8);
  color: white;
  padding: 28px;
  border-radius: 24px;
  margin-bottom: 22px;
  box-shadow: 0 8px 24px rgba(80, 54, 120, 0.15);
}

header h1 {
  font-size: 30px;
  margin-top: 4px;
}

.saudacao {
  font-size: 15px;
  opacity: 0.9;
}

.apresentacao {
  background: white;
  border-radius: 20px;
  padding: 22px;
  margin-bottom: 20px;
  box-shadow: 0 5px 18px rgba(60, 40, 80, 0.07);
}

.apresentacao h2 {
  color: #694aa6;
  margin-bottom: 8px;
  font-size: 21px;
}

.apresentacao p {
  color: #716b78;
  line-height: 1.5;
}

.menu {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.menu button {
  background: white;
  border: 1px solid #eee8f5;
  border-radius: 20px;
  padding: 20px 16px;
  text-align: left;
  cursor: pointer;
  min-height: 135px;
  box-shadow: 0 5px 16px rgba(60, 40, 80, 0.06);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.menu button:active {
  transform: scale(0.98);
}

.menu button span {
  display: block;
  font-size: 30px;
  margin-bottom: 12px;
}

.menu button strong {
  display: block;
  color: #51387d;
  font-size: 17px;
  margin-bottom: 6px;
}

.menu button small {
  display: block;
  color: #807989;
  font-size: 13px;
  line-height: 1.35;
}

@media (max-width: 600px) {
  .app {
    padding: 16px;
  }

  header {
    padding: 22px;
  }

  header h1 {
    font-size: 25px;
  }

  .menu {
    grid-template-columns: 1fr;
  }

  .menu button {
    min-height: 115px;
  }
}