.coinflip-tool {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: white;
}

.coinflip-container {
  background: white;
  padding: 5vh;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  text-align: center;
  width: 100%;
  max-width: 1400px;
  transition: transform 0.3s ease;
}

.coinflip-title {
  font-size: min(5vw, 48px);
  font-weight: 600;
  margin-bottom: 40px;
  color: var(--color-primary);
}

.coin-display {
  position: relative;
  width: min(50vw, 300px);
  height: min(50vw, 300px);
  margin: 0 auto 50px;
  transform-style: preserve-3d;
  perspective: 1000px;
}

.coin {
  width: 100%;
  height: 100%;
  position: relative;
  transform-style: preserve-3d;
  transition: transform 1.5s ease-in-out;
}

.coin-side {
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  backface-visibility: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: min(10vw, 80px);
  font-weight: 700;
  box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.coin-heads {
  background: linear-gradient(45deg, #FFD700, #FFC107);
  color: white;
  transform: rotateY(0deg);
}

.coin-tails {
  background: linear-gradient(45deg, #C0C0C0, #9E9E9E);
  color: white;
  transform: rotateY(180deg);
}

.coin.flip {
  animation: flip 1.5s ease-in-out forwards;
}

.coin-result {
  font-size: min(5vw, 36px);
  font-weight: 600;
  margin: 30px 0;
  color: var(--color-primary);
  min-height: 50px;
}

.flip-controls {
  display: flex;
  gap: 20px;
  justify-content: center;
}

.flip-btn {
  padding: min(3vh, 16px) min(4vw, 32px);
  font-size: min(3vw, 20px);
  border: none;
  border-radius: 8px;
  background: var(--color-primary);
  color: white;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  min-width: min(20vw, 150px);
}

.flip-btn:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
}

.flip-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.flip-history {
  margin-top: 40px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.history-title {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 15px;
  color: var(--color-text);
}

.history-list {
  max-height: 200px;
  overflow-y: auto;
  border: 1px solid var(--color-border);
  border-radius: 8px;
}

.history-item {
  display: flex;
  justify-content: space-between;
  padding: 12px 20px;
  border-bottom: 1px solid var(--color-border);
}

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

.history-result {
  font-weight: 600;
  color: var(--color-primary);
}

@keyframes flip {
  0% { transform: rotateY(0); }
  100% { transform: rotateY(1080deg); }
}

@media (max-width: 768px) {
  .coin-display {
    width: min(70vw, 250px);
    height: min(70vw, 250px);
  }
}