* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Poppins', sans-serif;
  color: white;
  height: 100vh;
  overflow: hidden;
  background: black;
}

.video-bg video {
  position: fixed;
  top: 0;
  left: 0;
  object-fit: cover;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  filter: brightness(0.6);
}

.header {
  position: absolute;
  top: 30px;
  left: 50px;
  right: 50px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  height: 100px;           /* Tăng kích thước */

}

.logo:hover {
  transform: scale(1.2);
}


nav a {
  color: white;
  margin-left: 20px;
  text-decoration: none;
  font-weight: 500;
  transition: opacity 0.3s;
}
nav a:hover {
  opacity: 0.7;
}

.hero {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 700;
}

.hero p {
  font-size: 1.2rem;
  margin-top: 10px;
  margin-bottom: 30px;
  opacity: 0.85;
}

.cta {
  padding: 12px 30px;
  background: #9d2e2b;
  border-radius: 8px;
  color: white;
  font-weight: bold;
  text-decoration: none;
  transition: background 0.3s;
}
.cta:hover {
  background: #c53d37;
}