:root {
  --header-height: 10vh;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 0.8vh;
  height: 0.8vh;
}

::-webkit-scrollbar-track {
  background: #111;
}

::-webkit-scrollbar-thumb {
  background-color: #333;
  border-radius: 10vh;
}

::-webkit-scrollbar-thumb:hover {
  background-color: #555;
}

* {
  scrollbar-width: thin;
  scrollbar-color: #333 #111;
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: sans-serif;
  background-color: #111;
  color: #fff;
  line-height: 1.6;
}

header {
  background-color: #000;
  height: var(--header-height);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 5%;
}

.logo img {
  height: 80%;
  max-height: 8vh;
}

.menu {
  position: relative;
}

.menu-button {
  background: none;
  border: none;
  color: #cfa749;
  font-size: 4vh;
  cursor: pointer;
}

.dropdown {
  display: none;
  position: absolute;
  right: 0;
  top: 100%;
  background-color: #222;
  padding: 1vh;
  min-width: 40vh;
  z-index: 1000;
}

.dropdown a {
  display: block;
  color: #fff;
  padding: 0.5em 0;
  text-decoration: none;
  font-size: 2vh;
}

.dropdown a:hover {
  background-color: #333;
}

.menu:hover .dropdown {
  display: block;
}

strong {
  color: #cfa749;
  font-size: 3vh;
}

main {
  padding: 2vh 5%;
}

h1 {
  text-align: center;
  color: #d4af37;
  font-size: 3vh;
  margin-bottom: 3vh;
}

p {
  font-size: 2.5vh;
  text-align: center;
}

button#btnCalcular {
  display: block;
  margin: 0 auto 4vh auto;
  background: linear-gradient(90deg, #d4af37, #f9d976);
  border: none;
  color: #000;
  font-weight: 700;
  font-size: 2.5vh;
  padding: 2vh 5vw;
  border-radius: 10vh;
  cursor: pointer;
  transition: background 0.3s ease;
}

button#btnCalcular:hover {
  background: linear-gradient(90deg, #f9d976, #d4af37);
}

/* Responsivo */
@media (max-width: 768px) {
  header {
    height: 8vh;
  }

  .logo img {
    max-height: 5vh;
  }

  .menu-button {
    font-size: 3vh;
  }

  strong {
    font-size: 2.5vh;
  }

  h1 {
    font-size: 2.5vh;
    margin-bottom: 4vh;
  }

  p {
    font-size: 2vh;
  }

  button#btnCalcular {
    font-size: 2.5vh;
    padding: 1.5vh 10vw;
    border-radius: 5vh;
  }
}