/* 自定义样式 - 增强本地化体验 */

/* 字体优化 - 中文友好 */
body, .navbar-brand, .card-title, h1, h2, h3, h4, h5, h6 {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
}

/* 代码字体 */
code, pre {
  font-family: "SFMono-Regular", Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

/* Emoji 图标样式 */
.emoji-icon {
  font-size: 3rem;
  display: block;
  margin-bottom: 20px;
  color: #667eea;
  line-height: 1;
  font-style: normal;
}

.icon-download, .icon-gear, .icon-info {
  font-size: 1.2em;
  margin-right: 0.5rem;
}

/* 特性图标悬浮动画 */
.feature-icon .emoji-icon {
  transition: all 0.3s ease;
}

.card:hover .feature-icon .emoji-icon {
  transform: scale(1.1) rotate(5deg);
  filter: brightness(1.2);
}

/* 动画增强 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

/* Hero section 增强 */
.hero-section {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 100px 0;
  margin-bottom: 50px;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="%23ffffff" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
  pointer-events: none;
}

.hero-section .container {
  position: relative;
  z-index: 1;
}

/* 功能图标动画 */
.feature-icon {
  font-size: 3rem;
  color: #667eea;
  margin-bottom: 20px;
  transition: all 0.3s ease;
}

.card:hover .feature-icon {
  animation: pulse 1s ease-in-out;
  color: #5a6fd8;
}

/* 卡片增强 */
.card {
  border: none;
  border-radius: 15px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.08);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  overflow: hidden;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 35px rgba(0,0,0,0.15);
}

.card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #667eea, #764ba2);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.card:hover::after {
  opacity: 1;
}

/* 按钮增强 */
.btn-custom {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border: none;
  padding: 12px 30px;
  border-radius: 25px;
  color: white;
  font-weight: 500;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.btn-custom::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left 0.5s;
}

.btn-custom:hover::before {
  left: 100%;
}

.btn-custom:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
  color: white;
}

/* 统计卡片增强 */
.stats-card {
  background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  color: white;
  border-radius: 15px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.stats-card::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
  transition: transform 0.3s ease;
  transform: scale(0);
}

.stats-card:hover::before {
  transform: scale(1);
}

.stats-card:hover {
  transform: scale(1.03);
  box-shadow: 0 15px 30px rgba(240, 147, 251, 0.3);
}

.stats-number {
  font-size: 2.5rem;
  font-weight: bold;
  position: relative;
  z-index: 1;
}

/* 导航栏增强 */
.navbar {
  transition: transform 0.3s ease, background-color 0.3s ease;
  backdrop-filter: blur(10px);
}

.navbar-brand {
  transition: transform 0.3s ease;
}

.navbar-brand:hover {
  transform: scale(1.05);
}

/* 代码块样式 */
pre {
  background: #f8f9fa;
  border: 1px solid #e9ecef;
  border-radius: 0.5rem;
  padding: 1rem;
  margin: 1rem 0;
  overflow-x: auto;
  font-size: 0.9rem;
  line-height: 1.4;
}

code {
  background: rgba(0,0,0,0.05);
  padding: 0.2rem 0.4rem;
  border-radius: 0.25rem;
  font-size: 0.875em;
  color: #e83e8c;
}

/* 响应式增强 */
@media (max-width: 768px) {
  .hero-section {
    padding: 60px 0;
  }
  
  .feature-icon {
    font-size: 2.5rem;
  }
  
  .stats-number {
    font-size: 2rem;
  }
  
  .btn-custom {
    padding: 10px 20px;
    font-size: 0.9rem;
  }
}

/* 滚动条美化 */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: #f1f1f1;
  border-radius: 10px;
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(135deg, #667eea, #764ba2);
  border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(135deg, #5a6fd8, #6a42b3);
}

/* 页面加载动画 */
.page-loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  opacity: 1;
  transition: opacity 0.5s ease;
}

.page-loader.fade-out {
  opacity: 0;
  pointer-events: none;
}

.loader-spinner {
  width: 50px;
  height: 50px;
  border: 3px solid #f3f3f3;
  border-top: 3px solid #667eea;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* 工具提示样式 */
.tooltip-custom {
  font-size: 12px !important;
  border-radius: 4px !important;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15) !important;
}

/* 表单验证样式 */
.is-invalid {
  border-color: #dc3545 !important;
  box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25) !important;
}

/* 加载状态 */
.loading {
  position: relative;
  opacity: 0.7;
  pointer-events: none;
}

.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px;
  border: 2px solid #fff;
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}