/* Amount buttons */
.amount-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  padding: 14px 8px;
  border: 2px solid #e5e7eb;
  border-radius: 16px;
  background: white;
  cursor: pointer;
  transition: all 0.2s ease;
  min-height: 64px;
}

.amount-btn:hover {
  border-color: #10b981;
  background: #f0fdf4;
}

.amount-btn:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
}

.amount-btn.selected {
  background: #10b981;
  border-color: #10b981;
  color: white;
  transform: scale(1.04);
}

.amount-btn.selected .text-gray-500 {
  color: rgba(255, 255, 255, 0.8);
}

/* Payment panel slide */
.payment-slide {
  animation: slideDown 0.35s ease-out;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Success checkmark animation */
.checkmark-circle {
  animation: scaleIn 0.4s ease-out;
}

.checkmark-path {
  stroke-dasharray: 100;
  stroke-dashoffset: 100;
  animation: drawCheck 0.6s ease-out 0.2s forwards;
}

@keyframes scaleIn {
  from {
    transform: scale(0.5);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

@keyframes drawCheck {
  to {
    stroke-dashoffset: 0;
  }
}

/* Spinner */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}