/* 引入 Inter 字体以提升英文及数字质感 */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);
  min-height: 100vh;
  color: #2d3748;
}

/* 玻璃拟态效果 (Glassmorphism) */
.glass-panel {
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.4);
  box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.06);
}

.glass-card {
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.5);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.glass-card:hover {
  background: rgba(255, 255, 255, 0.85);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.04);
}

/* 输入控件聚焦发光 */
.input-focus-ring {
  transition: all 0.2s ease-in-out;
}
.input-focus-ring:focus {
  outline: none;
  border-color: #4299e1;
  box-shadow: 0 0 0 3px rgba(66, 153, 225, 0.2);
}

/* 自定义打字机闪烁光标效果 */
.typing-cursor::after {
  content: '|';
  margin-left: 2px;
  font-weight: bold;
  color: #3182ce;
  animation: blink 0.9s infinite;
}

@keyframes blink {
  0%, 100% { opacity: 0; }
  50% { opacity: 1; }
}

/* 渐变流光文字 */
.gradient-text {
  background: linear-gradient(135deg, #2b6cb0 0%, #319795 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* 骨架屏加载动画 */
.skeleton {
  background: linear-gradient(90deg, #f2f2f2 25%, #e6e6e6 37%, #f2f2f2 63%);
  background-size: 400% 100%;
  animation: skeleton-loading 1.4s ease infinite;
}

@keyframes skeleton-loading {
  0% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* 自定义美化滚动条 */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: #cbd5e0;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: #a0aec0;
}

/* 按钮微交互 */
.btn-interactive {
  position: relative;
  overflow: hidden;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}
.btn-interactive:active {
  transform: scale(0.96);
}

/* 多选标签与单选按钮动画 */
.tag-transition {
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

/* 特点标签激活效果 */
.trait-tag {
  cursor: pointer;
  user-select: none;
  transition: all 0.2s ease;
}

/* 最小触控区域保障 (针对移动端按钮和输入框) */
.touch-target {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* 加载旋转动画 */
.animate-spin-slow {
  animation: spin 3s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}