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

html, body {
  height: 100%;
  width: 100%;
  font-family: 'Helvetica Neue', sans-serif;
}

/* Hero alanı */
.hero {
  position: relative;
  width: 100%;
  height: 100vh;
  background: url('images/background.webp') no-repeat center center/cover;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
}

/* Siyah yarı saydam katman */
.overlay {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
  background-color: rgba(0, 0, 0, 0.7);
  z-index: 1;
}

.logo {
  position: relative;
  z-index: 2;
  width: clamp(220px, 60vw, 540px); /* Önceki: 180px–50vw–480px idi */
  height: auto;
  margin-bottom: 1.5rem;
}

/* Alt yazı */
.subtitle {
  position: relative;
  z-index: 2;
  color: white;
  font-size: clamp(1rem, 2.5vw, 2rem); /* Yazı boyutu da dinamik */
  font-weight: 600;
  padding: 0 1rem;
}