/* 微交互动画和触摸反馈 */

/* 基础动画变量 */
:root {
  --transition-fast: 0.15s ease-out;
  --transition-normal: 0.3s ease-out;
  --transition-slow: 0.5s ease-out;
  --bounce-ease: cubic-bezier(0.68, -0.55, 0.265, 1.55);
  --smooth-ease: cubic-bezier(0.4, 0, 0.2, 1);
}

/* 按钮点击反馈动画 */
.btn {
  position: relative;
  overflow: hidden;
  transition: all var(--transition-normal) var(--smooth-ease);
  transform: translateZ(0);
  will-change: transform;
}

.btn:active {
  transform: scale(0.95) translateZ(0);
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn:active::before {
  width: 300px;
  height: 300px;
}

/* 卡片悬停效果 */
.card {
  transition: all var(--transition-normal) var(--smooth-ease);
  transform: translateZ(0);
  will-change: transform, box-shadow;
}

.card:hover {
  transform: translateY(-2px) translateZ(0);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.card:active {
  transform: translateY(0) translateZ(0);
}

/* 输入框焦点动画 */
.form-control {
  transition: all var(--transition-normal) var(--smooth-ease);
  transform: translateZ(0);
}

.form-control:focus {
  transform: scale(1.02) translateZ(0);
  box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

/* 加载状态指示器 */
.loading-spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: #fff;
  animation: spin 1s ease-in-out infinite;
}

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

/* 脉冲动画 */
.pulse {
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { opacity: 1; }
  50% { opacity: 0.5; }
  100% { opacity: 1; }
}

/* 淡入动画 */
.fade-in {
  animation: fadeIn 0.5s ease-out;
}

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

/* 滑入动画 */
.slide-in {
  animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
  from { transform: translateX(-100%); }
  to { transform: translateX(0); }
}

/* 弹跳动画 */
.bounce-in {
  animation: bounceIn 0.6s var(--bounce-ease);
}

@keyframes bounceIn {
  0% { transform: scale(0.3); opacity: 0; }
  50% { transform: scale(1.05); }
  70% { transform: scale(0.9); }
  100% { transform: scale(1); opacity: 1; }
}

/* 移动端触摸反馈 */
@media (hover: none) and (pointer: coarse) {
  .btn {
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
  }
  
  .btn:active {
    transform: scale(0.98);
    background-color: rgba(0, 0, 0, 0.1);
  }
  
  .card:active {
    transform: scale(0.98);
  }
  
  .form-control:focus {
    transform: none;
  }
}

/* 滚动优化 */
.smooth-scroll {
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
}

/* 减少动画（用户偏好） */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* 加载状态遮罩 */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.loading-overlay.show {
  opacity: 1;
  visibility: visible;
}

/* 进度条动画 */
.progress-bar {
  height: 4px;
  background: linear-gradient(90deg, #007bff, #28a745);
  border-radius: 2px;
  overflow: hidden;
  position: relative;
}

.progress-bar::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  0% { left: -100%; }
  100% { left: 100%; }
}

/* 工具提示动画优化 */
.tooltip {
  transition: opacity var(--transition-fast), transform var(--transition-fast);
  transform: scale(0.9);
  transform-origin: center bottom;
}

.tooltip.show {
  transform: scale(1);
}

/* 状态切换动画 */
.status-transition {
  transition: all var(--transition-normal) var(--smooth-ease);
}

.status-transition.connected {
  color: #28a745;
  transform: scale(1.05);
}

.status-transition.disconnected {
  color: #dc3545;
  transform: scale(0.95);
}

/* 响应式动画调整 */
@media (max-width: 768px) {
  .btn:active {
    transform: scale(0.96);
  }
  
  .card:hover {
    transform: none;
  }
  
  .form-control:focus {
    transform: none;
  }
}