* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  background: #f5f6f7;
  color: #191f28;
  line-height: 1.6;
}

.container {
  max-width: 1000px;
  margin: 2rem auto;
  padding: 2rem;
  background: #fff;
  border-radius: 24px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

h1 {
  text-align: center;
  margin-bottom: 2rem;
  color: #191f28;
  font-weight: 700;
  font-size: 2rem;
}

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.stat-item {
  background: #fff;
  padding: 1.5rem;
  border-radius: 16px;
  text-align: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
  border: 1px solid #f2f3f4;
}

.stat-item span:first-child {
  color: #8b95a1;
  font-size: 0.9rem;
}

.stat-item span:last-child {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  color: #191f28;
  margin-top: 0.5rem;
}

.betting-area {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
}

#betAmount {
  padding: 1rem;
  font-size: 1.2rem;
  border: 1px solid #e5e8eb;
  border-radius: 12px;
  background: #fff;
  color: #191f28;
  transition: border-color 0.2s;
}

#betAmount:focus {
  outline: none;
  border-color: #3182f6;
}

.bet-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.bet-btn {
  padding: 1rem;
  font-size: 1.2rem;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.2s;
  font-weight: 600;
}

.bet-btn:hover {
  transform: translateY(-2px);
}

.bet-btn.red {
  background: #ff4444;
  color: white;
  box-shadow: 0 2px 8px rgba(255, 68, 68, 0.2);
}

.bet-btn.black {
  background: #191f28;
  color: white;
  box-shadow: 0 2px 8px rgba(25, 31, 40, 0.2);
}

.controls {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
}

.controls button {
  flex: 1;
  padding: 1rem;
  font-size: 1rem;
  border: none;
  border-radius: 12px;
  background: #3182f6;
  color: white;
  cursor: pointer;
  transition: all 0.2s;
  font-weight: 600;
  box-shadow: 0 2px 8px rgba(49, 130, 246, 0.2);
}

.controls button:hover {
  background: #1b64da;
  transform: translateY(-2px);
}

.history {
  background: #fff;
  padding: 1.5rem;
  border-radius: 16px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
  border: 1px solid #f2f3f4;
}

.history h3 {
  margin-bottom: 1rem;
  color: #191f28;
  font-weight: 600;
}

.history-list {
  max-height: 300px;
  overflow-y: auto;
}

.history-item {
  padding: 1rem;
  border-bottom: 1px solid #f2f3f4;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.history-item:last-child {
  border-bottom: none;
}

.history-result {
  font-weight: 600;
}

.history-item.win .history-result {
  color: #3182f6;
}

.history-item.lose .history-result {
  color: #ff4444;
}

.history-amount {
  color: #8b95a1;
}

.history-change {
  font-weight: 600;
}

.history-change.positive {
  color: #3182f6;
}

.history-change.negative {
  color: #ff4444;
}

@media (max-width: 600px) {
  .container {
    margin: 1rem;
    padding: 1rem;
  }

  .stats {
    grid-template-columns: 1fr;
  }
}