* { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
}

body {
  background: #000;
}

/* Wrapper som fyller skjermen */
.hero {
  position: relative;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
}

/* Bakgrunnsbildet */
.hero__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  z-index: 0;
}

/* Knapp */
.hero__btn {
  position: absolute;
  left: 50%;
  bottom: 40px;
  transform: translateX(-50%);
  z-index: 2;

  padding: 14px 28px;
  border-radius: 12px;
  border: 2px solid rgba(255, 255, 255, 0.85);
  background: rgba(0, 0, 0, 0.55);
  color: #fff;

  text-decoration: none;
  font: 600 1.05rem/1 system-ui, -apple-system, Segoe UI, Roboto, Arial;
  letter-spacing: 0.2px;

  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);

  transition: transform 0.15s ease, background 0.15s ease, color 0.15s ease;
}

.hero__btn:hover {
  background: rgba(255, 255, 255, 0.9);
  color: #000;
  transform: translateX(-50%) translateY(-2px);
}

.hero__btn:active {
  transform: translateX(-50%) translateY(0px);
}