.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal.show {
  display: flex;
}

.modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
}

.modal-content {
  position: relative;
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: 32px;
  max-width: 400px;
  width: 100%;
  box-shadow: var(--shadow-lg);
  animation: modalIn 0.3s ease;
}

@keyframes modalIn {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(10px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 32px;
  height: 32px;
  border: none;
  background: var(--background);
  border-radius: 50%;
  font-size: 1.2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all 0.2s;
}

.modal-close:hover {
  background: var(--border);
  color: var(--text-primary);
}

.modal-title {
  font-size: 1.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 8px;
}

.modal-subtitle {
  text-align: center;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.login-options {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.login-option {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 24px;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  cursor: pointer;
  transition: all 0.2s;
  font-size: 1rem;
  font-weight: 500;
}

.login-option:hover {
  border-color: var(--primary-color);
  background: rgba(37, 99, 235, 0.05);
}

.login-option.wechat:hover {
  border-color: #07c160;
  background: rgba(7, 193, 96, 0.05);
}

.login-icon {
  font-size: 1.5rem;
}

.login-text {
  flex: 1;
  text-align: left;
}

.login-tip {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-top: 20px;
}

.payment-modal {
  max-width: 450px;
}

.payment-info {
  background: var(--background);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 24px;
}

.payment-item {
  display: flex;
  justify-content: space-between;
  padding: 12px 0;
}

.payment-item:first-child {
  border-bottom: 1px solid var(--border);
}

.payment-label {
  color: var(--text-secondary);
}

.payment-value {
  font-weight: 600;
}

.payment-value.price {
  color: var(--danger-color);
  font-size: 1.2rem;
}

.payment-methods {
  display: flex;
  gap: 12px;
  margin-bottom: 24px;
}

.payment-method {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.2s;
}

.payment-method.selected {
  border-color: var(--primary-color);
  background: rgba(37, 99, 235, 0.05);
}

.method-icon {
  font-size: 1.2rem;
}

.payment-tip {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-top: 16px;
}

.success-modal {
  text-align: center;
}

.success-icon {
  font-size: 4rem;
  margin-bottom: 16px;
}

.success-message {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.success-detail {
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.detail-modal {
  max-width: 600px;
  max-height: 80vh;
  overflow-y: auto;
}

.detail-content {
  margin-top: 20px;
}

.detail-section {
  margin-bottom: 20px;
}

.detail-section h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--primary-color);
}

.detail-section p {
  color: var(--text-secondary);
  line-height: 1.7;
}

.loading-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 60px 20px;
}

.loading-spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--border);
  border-top-color: var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

.loading-text {
  margin-top: 16px;
  color: var(--text-secondary);
}

.empty-state {
  text-align: center;
  padding: 60px 20px;
}

.empty-icon {
  font-size: 4rem;
  margin-bottom: 16px;
}

.empty-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.empty-desc {
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.toast {
  position: fixed;
  top: 20px;
  right: 20px;
  padding: 14px 24px;
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 2000;
  animation: toastIn 0.3s ease;
  border-left: 4px solid var(--primary-color);
}

.toast.success {
  border-left-color: var(--success-color);
}

.toast.error {
  border-left-color: var(--danger-color);
}

.toast.warning {
  border-left-color: var(--warning-color);
}

@keyframes toastIn {
  from {
    opacity: 0;
    transform: translateX(20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.toast-icon {
  font-size: 1.2rem;
}

.toast-message {
  font-weight: 500;
}

.toast-close {
  background: none;
  border: none;
  font-size: 1.2rem;
  cursor: pointer;
  color: var(--text-muted);
  padding: 4px;
}

@media (max-width: 480px) {
  .modal-content {
    padding: 24px;
    margin: 10px;
  }
  
  .login-option {
    padding: 14px 18px;
  }
  
  .payment-methods {
    flex-direction: column;
  }
}