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

body {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: #333;
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
}

header {
  background: #000;
  color: #fff;
  padding: 20px 0;
  position: sticky;
  top: 0;
  z-index: 1000;
}

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

header h1 {
  font-size: 24px;
}

header nav {
  display: none;
}

header .hamburger {
  font-size: 24px;
  color: #fff;
  cursor: pointer;
}

header nav ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  background: #000;
  position: absolute;
  top: 60px;
  right: 20px;
  padding: 10px;
  border-radius: 5px;
}

header nav ul li {
  margin: 10px 0;
}

header nav ul li a {
  color: #fff;
  text-decoration: none;
  font-size: 18px;
}

@media (min-width: 768px) {
  header nav {
    display: block;
  }
  header .hamburger {
    display: none;
  }
  header nav ul {
    flex-direction: row;
    position: static;
    background: none;
    padding: 0;
  }
  header nav ul li {
    margin: 0 15px;
  }
}

.hero {
  background-image: url('img/rnprj1-2.jpeg');
  background-repeat: no-repeat;
  background-position: center center;
  color: #fff;
  padding: 100px 0;
  text-align: center;
  text-shadow: 2px 2px 5px white;
}

.hero h3 {
  color: white;
  text-shadow: 2px 2px 5px black;
}

.hero .btn {
  background: #fff;
  color: #ff4d00;
  padding: 10px 20px;
  text-decoration: none;
  border-radius: 5px;
}

section {
  padding: 60px 0;
}

section h2 {
  text-align: center;
  margin-bottom: 20px;
  font-size: 28px;
  color: #333;
}

.project {
  background: #fff;
  margin-bottom: 40px;
  padding: 20px;
  border-radius: 5px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.project h3 {
  font-size: 24px;
  color: #ff8000;
  margin-bottom: 10px;
}

.project p {
  margin-bottom: 10px;
  font-size: 16px;
}

.project-gallery {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding: 10px 0;
  scroll-snap-type: x mandatory;
}

.project-gallery::-webkit-scrollbar {
  display: none;
}

.project-gallery img,
.project-gallery .video-wrapper {
  flex: 0 0 auto;
  width: 250px;
  height: 250px;
  border-radius: 5px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  overflow: hidden;
  scroll-snap-align: center;
}

.project-gallery img {
  object-fit: cover;
  object-position: center;
}

.project-gallery .video-wrapper video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.video-wrapper video:fullscreen,
.video-wrapper video:-webkit-full-screen {
  width: 100vw;
  height: 100vh;
  object-fit: contain;
}

.form {
  max-width: 600px;
  margin: 0 auto;
}

.form input,
.form textarea,
.form button {
  width: 100%;
  margin: 10px 0;
  padding: 10px;
  font-size: 16px;
}

.form button {
  background: #ff8000;
  color: #fff;
  border: none;
  cursor: pointer;
}

footer {
  background: #000;
  color: #fff;
  text-align: center;
  padding: 20px 0;
}

.introduction-header {
  text-align: center;
  margin-bottom: 20px;
}

.introduction-header h2 {
  font-size: 28px;
  color: #ff8000;
  margin: 0;
}

.introduction-content {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 20px;
  justify-content: center;
}

.introduction-text {
  flex: 2 1 60%;
  min-width: 300px;
  font-size: 16px;
  line-height: 1.6;
  color: #333;
}

.introduction-image {
  flex: 1 1 30%;
  min-width: 200px;
  text-align: center;
}

.introduction-image img {
  width: 100%;
  height: auto;
  max-width: 350px;
  border-radius: 10px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

@media (max-width: 768px) {
  .introduction-content {
    flex-direction: column;
    align-items: center;
  }
  .introduction-text,
  .introduction-image {
    flex: 1 1 100%;
  }
  .introduction-image {
    margin-top: 20px;
  }
}