/* 动画效果 */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}

/* 应用动画 */
.fade-in {
  animation: fadeIn 0.5s ease forwards;
}

.slide-in-up {
  animation: slideInUp 0.5s ease forwards;
}

.pulse {
  animation: pulse 1.5s infinite;
}

/* 加载动画 */
.loading-spinner {
  width: 40px;
  height: 40px;
  border: 4px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: #1a73e8;
  animation: spin 1s ease-in-out infinite;
  margin-right: 15px;
}

.loading-indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  padding: 20px 30px;
  background-color: white;
  border-radius: 8px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.1);
  color: #555;
  font-size: 16px;
  animation: fadeIn 0.3s ease-in-out;
}

.loading-indicator .loading-spinner {
  margin: 0 0 15px 0;
}

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

/* 消息动画 */
.toast-notification {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background-color: #333;
  color: white;
  padding: 12px 20px;
  border-radius: 8px;
  box-shadow: 0 3px 10px rgba(0,0,0,0.2);
  z-index: 9999;
  display: flex;
  align-items: center;
  gap: 12px;
  animation: slideInUp 0.3s ease, fadeOut 0.3s ease 2.7s forwards;
}

@keyframes fadeOut {
  from { opacity: 1; }
  to { opacity: 0; }
}

.toast-notification.success {
  background-color: #4CAF50;
}

.toast-notification.error {
  background-color: #f44336;
}

.toast-notification.info {
  background-color: #2196F3;
}

/* 按钮点击效果 */
.btn-ripple {
  position: relative;
  overflow: hidden;
}

.ripple-effect {
  position: absolute;
  background: rgba(255, 255, 255, 0.5);
  border-radius: 50%;
  transform: scale(0);
  animation: ripple 0.6s linear;
  pointer-events: none;
}

@keyframes ripple {
  to {
    transform: scale(2.5);
    opacity: 0;
  }
}

/* 表单元素聚焦效果 */
.form-focus-effect:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.25);
}