body {
  margin: 0;
  font-family: "Copperplate", serif;
}

/* HEADER */
header {
  position: sticky;
  top: 0;
  background: white;
  z-index: 1000;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 25px 0;
}

.logo {
  font-size: 36px;
  letter-spacing: 6px;
}

nav {
  flex: 1;
  text-align: center;
}

nav a {
  margin: 0 20px;
  text-decoration: none;
  color: black;
}

/* HERO */
.hero {
  height: 90vh;
  background: url("https://images.unsplash.com/photo-1494412651409-8963ce7935a7") center/cover;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.overlay {
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.75);
}

.container {
  position: relative;
  z-index: 2;
  width: 90%;
  max-width: 1100px;
  margin: auto;
  text-align: center;
}

/* TEXT */
.hero h1 {
  font-size: 110px;
}

p {
  max-width: 800px;
  margin: 15px auto;
  line-height: 1.8;
  font-size: 17px;
}

/* SECTIONS */
.section {
  padding: 100px 0;
  position: relative;
  background-size: cover;
}

/* BACKGROUNDS */
.bg-about { background-image: url("https://images.unsplash.com/photo-1507679799987-c73779587ccf"); }
.bg-export { background-image: url("https://images.unsplash.com/photo-1494412651409-8963ce7935a7"); }
.bg-import { background-image: url("https://images.unsplash.com/photo-1586528116311-ad8dd3c8310d"); }
.bg-logistics { background-image: url("https://images.unsplash.com/photo-1519003722824-194d4455a60c"); }

#process {
  background: url("https://images.unsplash.com/photo-1503387762-592deb58ef4e") center/cover;
}

/* PROCESS */
.process div {
  margin: 15px 0;
  font-weight: 600;
}

/* CONTACT */
.contact-bg {
  background: url("https://images.unsplash.com/photo-1486406146926-c627a92ad1ab") center/cover;
}

.contact-grid {
  display: flex;
  gap: 50px;
  justify-content: center;
  flex-wrap: wrap;
}

.contact-box {
  background: white;
  padding: 30px;
  border: 2px solid black;
  text-align: left;
}

/* FORM */
.form {
  display: flex;
  flex-direction: column;
  gap: 15px;
  max-width: 400px;
}

.form input,
.form textarea {
  padding: 14px;
  border: 2px solid black;
}

.form button {
  padding: 14px;
  background: black;
  color: white;
}

/* WHATSAPP */
.whatsapp-btn {
  display: inline-block;
  margin-top: 15px;
  padding: 10px;
  background: black;
  color: white;
  text-decoration: none;
}

.whatsapp-float {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: black;
  color: white;
  padding: 15px;
  border-radius: 50%;
}

/* ANIMATION */
.fade {
  opacity: 0;
  transform: translateY(20px);
  transition: 0.8s;
}

.fade.show {
  opacity: 1;
  transform: translateY(0);
}