/* Reset nhẹ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, sans-serif;
}

body {
  background: #f5f6f7;
  color: #333;
}

/* HERO */
.hero {
  position: relative;
  background-image: url("./img/sapa.jpg");
  background-size: cover;
  background-position: center;
  height: 90vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

.overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
}

.hero-content {
  position: relative;
  text-align: center;
  color: #fff;
  max-width: 600px;
}

.hero-content h1 {
  font-size: 48px;
  margin-bottom: 10px;
}

.hero-content p {
  font-size: 18px;
  margin-bottom: 20px;
}

.btn {
  padding: 10px 20px;
  background: #ffb300;
  text-decoration: none;
  color: #000;
  font-weight: bold;
  border-radius: 6px;
}

/* SECTION */
.section {
  padding: 50px 20px;
  text-align: center;
}

.section h2 {
  font-size: 32px;
  margin-bottom: 20px;
  color: #2c3e50;
}

.section p {
  max-width: 700px;
  margin: auto;
  line-height: 1.6;
}

/* CARD */
.card-container {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-top: 30px;
  flex-wrap: wrap;
}

.card {
  width: 280px;
  background: #fff;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  transition: 0.3s;
}

.card:hover {
  transform: translateY(-5px);
}

.card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.card h3 {
  margin: 15px;
  font-size: 20px;
}

.card p {
  margin: 0 15px 20px;
  font-size: 14px;
  color: #555;
}

/* FOOTER */
footer {
  text-align: center;
  padding: 20px 0;
  background: #222;
  color: white;
  margin-top: 30px;
}