*,
*::before,
*::after {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  height: 100dvh;
  width: 100vw;
  overflow: hidden;
}

body {
  display: grid;
  place-items: center;  /* perfect center both axes */
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(35px);
  font-family: Arial, sans-serif;
  color: #fff;
    /* fallback solid color, then image */

  background: url('../images/bg-color.jpg') center center / cover no-repeat fixed;
  line-height: 1.2rem;

}

.overlay-box {
  background: rgba(30,30,30,0.9);
  padding: 2rem;
  border-radius: 12px;
  text-align: center;
  max-width: 400px;
  width: 90%;         /* scale safely on mobile */
  box-shadow: 0 0 20px rgba(0,0,0,0.6);
}

.overlay-buttons {
  margin-top: 1.5rem;
  display: flex;
  justify-content: center;
  gap: 1rem;
}

button {
  flex: 0 0 auto;
  padding: 0.5rem 1rem;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 1rem;
}

.accept { background: #28a745; color: #fff; }
.cancel { background: #dc3545; color: #fff; }