/* ============================================================
   通用组件样式
   ============================================================ */

/* 卡片组件 */
.card {
  background-color: var(--color-white);
  border-radius: var(--border-radius-base);
  box-shadow: 0 12px 28px rgba(9, 29, 61, 0.08);
  border: 1px solid rgba(0, 92, 175, 0.05);
  overflow: hidden;
  transition: all var(--transition-fast);
  position: relative;
}

.card:hover {
  box-shadow: 0 18px 42px rgba(9, 29, 61, 0.14);
  transform: translateY(-6px);
}

.card-header {
  background: linear-gradient(135deg, rgba(0, 92, 175, 0.95), rgba(77, 208, 225, 0.6));
  color: var(--color-white);
  padding: var(--spacing-lg);
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-lg);
  letter-spacing: 0.04em;
}

.card-body {
  padding: var(--spacing-lg);
}

.card-footer {
  background-color: var(--color-light);
  padding: var(--spacing-base) var(--spacing-lg);
  border-top: 1px solid var(--color-border);
}

/* 横幅组件 */
.banner {
  background: linear-gradient(135deg, rgba(0, 92, 175, 0.95), rgba(255, 152, 0, 0.9));
  color: var(--color-white);
  padding: var(--spacing-2xl) var(--container-padding);
  text-align: center;
  border-radius: var(--border-radius-lg);
  margin: var(--spacing-lg) 0;
  position: relative;
  overflow: hidden;
}

.banner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.2), transparent 60%),
              radial-gradient(circle at 80% 30%, rgba(255, 255, 255, 0.25), transparent 55%),
              linear-gradient(135deg, rgba(255, 255, 255, 0.14), rgba(255, 255, 255, 0));
}

.banner-content {
  position: relative;
  z-index: 1;
}

.banner h1 {
  color: var(--color-white);
  margin-bottom: var(--spacing-base);
}

.banner p {
  color: rgba(255, 255, 255, 0.9);
  font-size: var(--font-size-lg);
  margin-bottom: 0;
}

/* 部分标题 */
.section-title {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
  position: relative;
  padding-bottom: var(--spacing-lg);
}

.section-title h2 {
  color: var(--color-dark-text);
  margin-bottom: var(--spacing-base);
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--color-secondary), var(--color-primary));
  border-radius: var(--border-radius-full);
}

.section-title p {
  color: var(--color-gray);
  font-size: var(--font-size-lg);
  margin-bottom: 0;
}

/* 特色盒子 */
.feature-box {
  background: linear-gradient(135deg, rgba(227, 242, 255, 0.7), rgba(255, 232, 204, 0.65));
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-base);
  border-left: 4px solid var(--color-primary);
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.feature-box:hover {
  background: linear-gradient(135deg, rgba(0, 92, 175, 0.12), rgba(255, 152, 0, 0.12));
  border-left-color: var(--color-secondary);
}

.feature-box h4 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-base);
}

.feature-box p {
  color: var(--color-gray);
  margin-bottom: 0;
}

/* 统计数据框 */
.stat-box {
  text-align: center;
  padding: var(--spacing-lg);
  background-color: var(--color-white);
  border-radius: var(--border-radius-base);
  box-shadow: 0 10px 28px rgba(12, 36, 73, 0.1);
  border: 1px solid rgba(0, 92, 175, 0.08);
  transition: all var(--transition-fast);
  background-image: radial-gradient(circle at top, rgba(77, 208, 225, 0.1), transparent 65%);
}

.stat-box:hover {
  box-shadow: 0 16px 40px rgba(12, 36, 73, 0.18);
  transform: translateY(-6px);
}

.stat-number {
  font-size: var(--font-size-5xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.stat-label {
  font-size: var(--font-size-base);
  color: var(--color-gray);
  font-weight: var(--font-weight-medium);
}

/* 时间线组件 */
.timeline {
  position: relative;
  padding: var(--spacing-lg) 0;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background-color: var(--color-border);
  transform: translateX(-50%);
}

.timeline-item {
  margin-bottom: var(--spacing-2xl);
  position: relative;
}

.timeline-item:nth-child(odd) .timeline-content {
  margin-left: 0;
  margin-right: 50%;
  padding-right: var(--spacing-lg);
  text-align: right;
}

.timeline-item:nth-child(even) .timeline-content {
  margin-left: 50%;
  margin-right: 0;
  padding-left: var(--spacing-lg);
  text-align: left;
}

.timeline-dot {
  position: absolute;
  left: 50%;
  top: var(--spacing-base);
  width: 16px;
  height: 16px;
  background-color: var(--color-primary);
  border: 4px solid var(--color-white);
  border-radius: var(--border-radius-full);
  transform: translateX(-50%);
  box-shadow: 0 0 0 4px var(--color-primary-light);
}

.timeline-year {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.timeline-description {
  color: var(--color-gray);
  line-height: var(--line-height-relaxed);
}

/* 标签组件 */
.tag {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-base);
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: var(--border-radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  margin-right: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
  transition: all var(--transition-fast);
}

.tag:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.tag.secondary {
  background-color: var(--color-secondary-light);
  color: var(--color-secondary);
}

.tag.secondary:hover {
  background-color: var(--color-secondary);
  color: var(--color-white);
}

/* 分割线 */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-border), transparent);
  margin: var(--spacing-lg) 0;
}

/* 加载动画 */
.spinner {
  display: inline-block;
  width: 40px;
  height: 40px;
  border: 4px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: var(--border-radius-full);
  animation: spin 1s linear infinite;
}

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

/* 提示框 */
.alert {
  padding: var(--spacing-base) var(--spacing-lg);
  border-radius: var(--border-radius-base);
  margin-bottom: var(--spacing-base);
  border-left: 4px solid;
}

.alert-success {
  background-color: #d4edda;
  border-left-color: var(--color-success);
  color: #155724;
}

.alert-warning {
  background-color: #fff3cd;
  border-left-color: var(--color-warning);
  color: #856404;
}

.alert-danger {
  background-color: #f8d7da;
  border-left-color: var(--color-danger);
  color: #721c24;
}

.alert-info {
  background-color: #d1ecf1;
  border-left-color: var(--color-info);
  color: #0c5460;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .banner {
    padding: var(--spacing-lg) var(--container-padding);
  }

  .timeline::before {
    left: 0;
  }

  .timeline-item:nth-child(odd) .timeline-content,
  .timeline-item:nth-child(even) .timeline-content {
    margin-left: var(--spacing-2xl);
    margin-right: 0;
    padding-left: var(--spacing-lg);
    text-align: left;
  }

  .timeline-dot {
    left: 0;
  }

  .section-title h2 {
    font-size: var(--font-size-2xl);
  }
}

@media (max-width: 480px) {
  .card-body,
  .card-header,
  .card-footer {
    padding: var(--spacing-base);
  }

  .stat-number {
    font-size: var(--font-size-3xl);
  }

  .feature-box {
    padding: var(--spacing-base);
  }
}