body {
  margin: 0;
  font-family: 'Inter', Arial, sans-serif;
  background: linear-gradient(135deg, #0f0f10, #1b1b1f);
  color: #fff;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.container {
  width: 100%;
  max-width: 720px;
  padding: 24px;
  text-align: center;
}

.title {
  margin: 0 0 8px 0;
  font-size: 28px;
}

.subtitle {
  margin: 0 0 20px 0;
  color: #b8b8c2;
}

.wheel-container {
  position: relative;
  margin: 0 auto;
  width: 100%;
  max-width: 520px;
}

.pointer {
  position: absolute;
  top: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 14px solid transparent;
  border-right: 14px solid transparent;
  border-bottom: 20px solid #ffcc00;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.5));
  z-index: 2;
}

#wheel {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  border: 10px solid #2a2a33;
  box-shadow: 0 10px 30px rgba(0,0,0,0.4), inset 0 0 20px rgba(255,255,255,0.06);
  background: radial-gradient(circle at 50% 50%, rgba(255,255,255,0.05) 0%, rgba(0,0,0,0.2) 70%);
}

#spinBtn {
  margin: 20px auto 0 auto;
  padding: 14px 36px;
  font-size: 18px;
  font-weight: 600;
  background: linear-gradient(135deg, #ff4d6d, #ff7a45);
  color: white;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: transform 0.15s ease, filter 0.2s ease, opacity 0.2s ease;
  box-shadow: 0 8px 18px rgba(255, 77, 109, 0.35);
}

#spinBtn:hover {
  transform: translateY(-1px);
  filter: brightness(1.05);
}

#spinBtn:active {
  transform: translateY(0);
}

#spinBtn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  filter: grayscale(0.2);
}

#resultBox {
  margin-top: 22px;
}

.claim-btn {
  margin-top: 10px;
  padding: 10px 20px;
  font-size: 16px;
  background: #4caf50;
  color: #fff;
  border: none;
  border-radius: 8px;
  cursor: pointer;
}

.hidden {
  display: none;
}