.hero-section {
  height: 100vh;
  background: url('../img/hero-bg.png') center center / cover no-repeat;
  position: relative;
}

.hero-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.5); /* koyu filtre */
}

.hero-section .container {
  position: relative;
  z-index: 1;
}