body {
  margin: 0;
  font-family: Arial, sans-serif;
  text-align: center;
  color: #333;

.hero {
  background-image: url("img/hero-bg.jpg");
  background-repeat: no-repeat;
  background-position: center top;
  background-size: auto auto; /* SIZE THẬT */

  background-color: #f9c5d1;

  min-height: 360px;
  padding: 50px 20px;
  color: white;

  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.hero h1 {
  font-size: 42px;
  text-shadow: 0 4px 10px rgba(0,0,0,0.6);
}

.hero p {
  font-size: 18px;
  text-shadow: 0 2px 6px rgba(0,0,0,0.6);
}

.btn {
  display: inline-block;
  background: #e75480;
  color: white;
  padding: 12px 30px;
  border-radius: 30px;
  text-decoration: none;
  margin-top: 20px;
}

.section {
  padding: 50px 20px;
}

.section h2 {
  font-size: 28px;
  margin-bottom: 20px;
}

.pink {
  background: #fff0f5;
}

.services {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.card {
  background: white;
  padding: 20px;
  border-radius: 15px;
  width: 240px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.gallery img {
  width: 220px;
  margin: 10px;
  border-radius: 15px;
  cursor: pointer;
  box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

.price p {
  font-size: 18px;
}

footer {
  background: #e75480;
  color: white;
  padding: 15px;
}

/* LIGHTBOX */
#lightbox {
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.8);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 2000;
}

#lightbox img {
  max-width: 90%;
  max-height: 90%;
  border-radius: 15px;
}
.hero-img {
  width: 80%;
  max-width: 600px;
  border-radius: 20px;
  margin: 20px auto;
  display: block;
  box-shadow: 0 6px 15px rgba(0,0,0,0.2);
}
.zalo-btn {
  position: fixed;
  right: 20px;
  bottom: 20px;
  background: #0084ff;
  color: #fff;
  padding: 16px 22px;
  border-radius: 30px;
  font-weight: bold;
  text-decoration: none;
  z-index: 99999;
  transition: transform 0.3s;
}

.zalo-btn:hover {
  transform: scale(1.15);
}
header.hero {
  position: relative;
}

.topbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.9);
  display: flex;
  justify-content: center;
  gap: 25px;
  padding: 12px 0;
  z-index: 999;
  font-weight: bold;
}

.topbar a {
  text-decoration: none;
  color: #ff6f91;
}