body {
  background: linear-gradient(135deg, #232526 0%, #414345 100%);
  font-family: 'Inter', 'Segoe UI', Arial, sans-serif;
  margin: 0;
  padding: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.container {
  background: rgba(34, 40, 49, 0.98);
  border-radius: 20px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.25);
  padding: 2.5rem 2.5rem 2rem 2.5rem;
  max-width: 410px;
  width: 100%;
  text-align: center;
  color: #f7fafc;
  position: relative;
  overflow: hidden;
}

.container::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 180px;
  height: 180px;
  background: radial-gradient(circle, #ff9900 0%, transparent 70%);
  opacity: 0.12;
  z-index: 0;
}

h1 {
  margin-bottom: 0.7rem;
  color: #ff9900;
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  z-index: 1;
  position: relative;
}

.incentive {
  color: #ffd580;
  font-weight: 600;
  margin-bottom: 1.7rem;
  font-size: 1.08rem;
  z-index: 1;
  position: relative;
}

.btc-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  z-index: 1;
  position: relative;
}

.qr-container {
  margin-bottom: 1.3rem;
  background: #232526;
  border-radius: 16px;
  box-shadow: 0 2px 12px rgba(255,153,0,0.08);
  padding: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

#qrcode {
  width: 170px;
  height: 170px;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(255,153,0,0.10);
}

.address-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
}

#btc-address {
  font-family: 'Menlo', 'Consolas', monospace;
  font-size: 1.08rem;
  background: #232526;
  color: #ffd580;
  padding: 0.7rem 1.2rem;
  border-radius: 8px;
  margin-bottom: 0.8rem;
  word-break: break-all;
  box-shadow: 0 1px 4px rgba(255,153,0,0.07);
  letter-spacing: 0.5px;
  transition: background 0.2s;
}

#btc-address:active, #btc-address:focus {
  background: #414345;
}

#copy-btn {
  background: linear-gradient(90deg, #ff9900 0%, #ffb347 100%);
  color: #232526;
  border: none;
  border-radius: 8px;
  padding: 0.6rem 1.5rem;
  font-size: 1.08rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(255,153,0,0.10);
  transition: background 0.2s, color 0.2s, transform 0.1s;
  outline: none;
}

#copy-btn:hover, #copy-btn:focus {
  background: linear-gradient(90deg, #ffd580 0%, #ff9900 100%);
  color: #232526;
  transform: translateY(-2px) scale(1.04);
}

.address-label {
  color: #ffd580;
  font-size: 1.01rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
  letter-spacing: 0.2px;
}

.address-note {
  color: #bfc9d1;
  font-size: 0.97rem;
  margin-top: 0.5rem;
  margin-bottom: 0.2rem;
}

.thank-you {
  color: #ff9900;
  font-size: 1.01rem;
  font-weight: 600;
  margin-top: 0.7rem;
}

@media (max-width: 500px) {
  .container {
    padding: 1.2rem 0.3rem 1.2rem 0.3rem;
    max-width: 99vw;
  }
  #qrcode {
    width: 120px;
    height: 120px;
  }
  .qr-container {
    padding: 0.5rem;
  }
}