body {
  background-color: #121212;
  color: #f5f5f5;
  font-family: 'Courier New', monospace;
  margin: 0;
  padding: 0;
}

.dong-wrapper {
  text-align: center;
  padding-top: 40px;
}

.dong-header {
  font-size: 2.5rem;
  color: gold;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.dong-container {
  position: relative;
  width: 600px;
  margin: 40px auto;
}

#dong-wheel {
  width: 100%;
  height: auto;
  border-radius: 50%;
  box-shadow: 0 0 20px rgba(255, 215, 0, 0.4);
}

.dong-pointer {
  position: absolute;
  top: -30px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 15px solid transparent;
  border-right: 15px solid transparent;
  border-top: 25px solid red; /* ⬇️ down-pointing triangle */
  z-index: 10;
  animation: pulse 1.2s infinite ease-in-out;
}

#dong-spin-btn {
  display: block;
  margin: 30px auto 10px auto;
  width: 150px;
  height: 150px;
  border-radius: 50%;
  font-size: 1.3rem;
  font-weight: bold;
  font-family: 'Courier New', monospace;
  text-shadow: 0 0 2px #000;
  color: black;

  background: radial-gradient(circle at 30% 30%, #ffd700, #b8860b);
  border: 3px solid #aa0000;

  box-shadow:
    inset 0 0 8px rgba(0,0,0,0.4),        /* inner rim shadow */
    0 3px 6px rgba(0,0,0,0.6),            /* outer drop shadow */
    0 0 20px rgba(255, 230, 0, 0.6);      /* glow */

  cursor: pointer;
  transition: transform 0.1s ease, box-shadow 0.2s ease;
}

#dong-spin-btn:hover {
  box-shadow:
    inset 0 0 10px rgba(0,0,0,0.5),
    0 5px 10px rgba(255, 0, 0, 0.5),
    0 0 25px rgba(255, 230, 0, 0.8);
}

#dong-spin-btn:active {
  transform: translateY(2px);
  box-shadow:
    inset 0 2px 4px rgba(0,0,0,0.6),
    0 2px 4px rgba(0,0,0,0.4),
    0 0 15px rgba(255, 0, 0, 0.5);
}

.dong-result {
  margin-top: 30px;
  font-size: 1.6rem;
  font-weight: bold;
  color: limegreen;
  text-shadow: 0 0 5px black;
}