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

body {
  background-color: #111;
  color: #fff;
  line-height: 1.6;
}

header {
  background: #000;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 10%;
  position: sticky;
  top: 0;
  z-index: 999;
}

.logo {
  font-size: 28px;
  font-weight: bold;
  color: #f00;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 25px;
}

nav a {
  text-decoration: none;
  color: white;
  transition: 0.3s;
}

nav a:hover {
  color: #f00;
}

.hero {
  background: url('logo.png') no-repeat center center/cover;
  height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.hero-text {
  background: rgba(0, 0, 0, 0.7);
  padding: 40px;
  border-radius: 10px;
}

.hero h1 {
  font-size: 50px;
  margin-bottom: 20px;
}

.hero .btn {
  background: #f00;
  padding: 12px 25px;
  color: #fff;
  text-decoration: none;
  font-weight: bold;
  border-radius: 5px;
  transition: 0.3s;
}

.hero .btn:hover {
  background: #c00;
}

.section {
  padding: 60px 10%;
  text-align: center;
}

.section h2 {
  font-size: 36px;
  color: #f00;
  margin-bottom: 30px;
}

.products,
.trainers {
  display: flex;
  gap: 30px;
  justify-content: center;
  flex-wrap: wrap;
}

.product-card,
.trainer-card {
  background: #222;
  padding: 20px;
  border-radius: 10px;
  width: 250px;
  transition: 0.3s;
}

.product-card:hover,
.trainer-card:hover {
  transform: scale(1.05);
  background: #333;
}

.product-card img,
.trainer-card img {
  width: 100%;
  border-radius: 10px;
  margin-bottom: 15px;
}

.dark {
  background: #181818;
}

footer {
  background: #000;
  padding: 30px;
  text-align: center;
  color: #888;
  font-size: 14px;
}