* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: #f4f4f4;
  color: #111;
}

.wrap {
  max-width: 900px;
  margin: 0 auto;
  padding: 24px 16px 40px;
  text-align: center;
}

h1 {
  margin: 0 0 8px;
  font-size: 2rem;
}

.sub {
  margin: 0 0 20px;
  color: #444;
}

.card {
  background: #fff;
  border: 1px solid #ddd;
  padding: 12px;
  border-radius: 8px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.08);
  overflow: hidden;
}

.card img {
  display: block;
  width: 100%;
  max-height: 72vh;
  object-fit: contain;
  margin: 0 auto;
  border-radius: 4px;
}

.rolling img {
  animation: flash .18s linear infinite;
}

@keyframes flash {
  50% {
    opacity: .55;
    transform: scale(1.02);
  }
}

.controls {
  margin-top: 18px;
}

button {
  border: none;
  background: #111;
  color: #fff;
  padding: 15px 28px;
  font-size: 1rem;
  font-weight: 700;
  border-radius: 6px;
  cursor: pointer;
  min-width: 190px;
}

button:hover { opacity: .92; }
button:disabled { opacity: .7; cursor: default; }

.counter {
  margin-top: 14px;
  color: #555;
  font-size: .95rem;
}

@media (max-width: 640px) {
  h1 { font-size: 1.6rem; }
  button { width: 100%; max-width: 280px; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}