/* 基础样式重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Noto Sans SC', sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  overflow: hidden;
  position: relative;
}

#app {
  position: relative;
  width: 100%;
  height: 100vh;
}

/* 模态框背景 */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  backdrop-filter: blur(5px);
}

/* 模态框 */
.modal {
  background: white;
  border-radius: 15px;
  padding: 30px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  max-width: 400px;
  width: 90%;
  text-align: center;
  animation: modalSlideIn 0.5s ease-out;
}

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(-50px) scale(0.9);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.titlebar {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.icon {
  font-size: 2.5rem;
  margin-right: 10px;
}

.title {
  font-size: 1.8rem;
  font-weight: 800;
  color: #333;
}

.content {
  font-size: 1.1rem;
  color: #666;
  margin-bottom: 30px;
  line-height: 1.6;
}

.actions {
  display: flex;
  justify-content: center;
  gap: 15px;
}

.btn {
  padding: 12px 30px;
  border: none;
  border-radius: 25px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  outline: none;
}

.btn.primary {
  background: linear-gradient(135deg, #667eea, #764ba2);
  color: white;
}

.btn.primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(102, 126, 234, 0.3);
}

.btn.primary:active {
  transform: translateY(0);
}

/* 弹窗层 */
#popup-layer {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 999;
}

/* 弹窗样式 */
.popup {
  position: absolute;
  background: white;
  border-radius: 10px;
  padding: 15px 20px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  animation: popupFadeIn 0.5s ease-out;
  pointer-events: auto;
  max-width: 200px;
  text-align: center;
  border: 2px solid rgba(255, 255, 255, 0.3);
  z-index: 1;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.popup:hover {
  transform: scale(1.05);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
  z-index: 2;
}

@keyframes popupFadeIn {
  from {
    opacity: 0;
    transform: scale(0.8) translateY(-20px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.popup-content {
  font-size: 14px;
  font-weight: 600;
  color: #333;
}

/* 浮动小球 */
#float-balls {
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 1001;
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.float-ball {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  background: rgba(255, 255, 255, 0.9);
  border-radius: 50%;
  text-decoration: none;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.float-ball:hover {
  transform: translateY(-5px) scale(1.1);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
  background: rgba(255, 255, 255, 1);
}

.float-ball span {
  font-size: 12px;
  font-weight: 600;
  color: #333;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .modal {
    padding: 20px;
    margin: 20px;
  }
  
  .title {
    font-size: 1.5rem;
  }
  
  .icon {
    font-size: 2rem;
  }
  
  .content {
    font-size: 1rem;
  }
  
  .btn {
    padding: 10px 25px;
    font-size: 0.9rem;
  }
  
  #float-balls {
    bottom: 20px;
    right: 20px;
  }
  
  .float-ball {
    width: 50px;
    height: 50px;
  }
  
  .float-ball span {
    font-size: 11px;
  }
}

@media (max-width: 480px) {
  .modal {
    padding: 15px;
  }
  
  .title {
    font-size: 1.3rem;
  }
  
  .icon {
    font-size: 1.8rem;
  }
  
  .content {
    font-size: 0.9rem;
  }
  
  .btn {
    padding: 8px 20px;
    font-size: 0.8rem;
  }
}