body {
  margin: 0;
  font-family: Arial, sans-serif;
}

section p,
section li,
section .contact-btn,
.lang-switch button {
  font-size: 1.8em;
}

.centered {
  font-size: 8em;
  color: #fff;
  text-shadow: 1px 1px 4px #000;
}

section {
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  color: #fff;
  text-shadow: 1px 1px 4px #000;
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center center;
}

#section1 {
  background-image: url('../img/background-0.jpg');
}

#section2 {
  background-image: url('../img/background-3.png');
  text-align: center;
  padding: 20px;
}

#section3 {
  background-image: url('../img/background-2.jpg');
  text-align: center;
  padding: 20px;
}

#section4 {
  background-image: url('../img/background-1.jpg');
  text-align: left;
  padding: 40px 60px;
  align-items: center;
  justify-content: flex-start;
}

#section4 .content {
  width: 100%;
}

#section4 h1 {
  font-size: 2.2em;
}

#section4 p {
  font-size: 1.8em;
  max-width: 900px;
  margin: 0 0 1.8em 0;
  text-align: left;
}

h1 {
  font-size: 4em;
}

h2 {
  font-size: 2em;
}

p {
  font-size: 1.5em;
  max-width: 800px;
  margin: 0 auto;
}

.lang-switch {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 100;
}
.lang-switch button {
  margin-left: 5px;
  padding: 8px 16px;
  font-size: 1em;
  border-radius: 4px;
  border: none;
  background: #222;
  color: #fff;
  cursor: pointer;
  opacity: 0.8;
  height: 40px;
  line-height: 24px;
  min-width: 90px;
}

@media (max-width: 600px) {
  .lang-switch button {
    font-size: 1.1em !important;
    height: 48px !important;
    min-width: 120px !important;
    padding: 10px 0 !important;
  }
}

.contact-btn {
  display: inline-block;
  background: #114c8f;
  color: #fff;
  font-size: 1.2em;
  padding: 14px 57px;
  border-radius: 12px;
  text-decoration: none;
  font-weight: bold;
  box-shadow: 0 4px 16px rgba(0,0,0,0.18);
  position: relative;
  left: 0;
  opacity: 0;
  transform: translateY(400px);
  transition: opacity 0.7s cubic-bezier(.4,0,.2,1), transform 0.7s cubic-bezier(.4,0,.2,1);
  margin-top: 40px;
  white-space: nowrap;
}
.contact-btn.slide-in {
  opacity: 1;
  transform: translateY(0);
}