/* =========================================
   考尔快交规 PC 端 - 首页样式 v1
   1:1 复刻参考网站 https://pc.qaydtjg.com
   ========================================= */

:root {
  /* 主色调 - 与后台一致的蓝色 */
  --primary: #409eff;
  --primary-dark: #66b1ff;
  --primary-light: #ecf5ff;
  
  /* 辅助色 */
  --orange: #e6a23c;
  --orange-light: #fdf6ec;
  --pink: #f56c6c;
  --pink-light: #fef0f0;
  --green: #67c23a;
  --green-light: #f0f9eb;
  --purple: #909399;
  --purple-light: #f5f7fa;
  
  /* 中性色 */
  --text-primary: #1f2937;
  --text-secondary: #606266;
  --text-light: #909399;
  --bg-page: #f5f7fa;
  --bg-white: #ffffff;
  --border: #e4e7ed;
  
  /* 阴影 - 与后台一致 */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow: 0 2px 12px rgba(0,0,0,0.05);
  --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
  
  /* 过渡 */
  --transition: all 0.3s ease;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 14px;
  color: var(--text-primary);
  background: var(--bg-page);
  line-height: 1.5;
  min-height: 100vh;
}

.page-wrapper {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}

/* =========================================
   Header - 蓝色顶部栏
   ========================================= */
.site-header {
  background: var(--primary);
  height: 56px;
  position: sticky;
  top: 0;
  z-index: 200;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 32px;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: #fff;
}

.header-logo {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  object-fit: cover;
}

.brand-name {
  font-size: 18px;
  font-weight: 600;
  color: #fff;
}

.header-selects {
  display: flex;
  align-items: center;
  gap: 12px;
}

.select-box {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: rgba(255,255,255,0.15);
  border-radius: 4px;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
}

.select-box:hover {
  background: rgba(255,255,255,0.25);
}

.select-text {
  font-size: 13px;
  color: #fff;
}

.select-arrow {
  font-family: "iconfont";
  font-size: 12px;
  color: rgba(255,255,255,0.8);
}

.header-right {
  display: flex;
  align-items: center;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background: rgba(255,255,255,0.15);
  border-radius: 20px;
  cursor: pointer;
  transition: var(--transition);
}

.user-info:hover {
  background: rgba(255,255,255,0.25);
}

.user-avatar {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(255,255,255,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.user-avatar::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #fff;
  position: absolute;
  top: 4px;
}

.user-avatar::after {
  content: "";
  width: 14px;
  height: 8px;
  border-radius: 10px 10px 0 0;
  background: #fff;
  position: absolute;
  bottom: 3px;
}

.user-text {
  font-size: 13px;
  color: #fff;
}

/* =========================================
   Subject Tabs - 科目标签
   ========================================= */
.subject-tabs {
  background: var(--bg-white);
  border-bottom: 1px solid var(--border);
  padding: 0;
}

.tabs-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
}

.tab-item {
  position: relative;
  padding: 16px 48px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}

.tab-item:hover {
  color: var(--primary);
}

.tab-item.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

.tab-sep { flex: 1; }
.tab-back-btn {
  margin-left: auto;
  margin-right: 8px;
  padding: 4px 14px;
  border-radius: 16px;
  font-size: 13px;
  color: var(--text-secondary);
  background: var(--bg-page);
  border: 1px solid var(--border);
  text-decoration: none;
  transition: all .25s ease;
  white-space: nowrap;
}
.tab-back-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-light);
}

/* =========================================
   Main Content - 主内容区
   ========================================= */
.main-content {
  flex: 1;
  padding: 40px 0;
}

.content-row {
  display: flex;
  align-items: center;
  gap: 40px;
  margin-bottom: 40px;
}

.content-row:last-child {
  margin-bottom: 0;
}

/* =========================================
   Circle Cards - 大圆形卡片
   ========================================= */
.circle-card {
  flex-shrink: 0;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  transition: var(--transition);
  box-shadow: var(--shadow-lg);
}

.circle-card:hover {
  transform: scale(1.05);
  box-shadow: 0 15px 25px rgba(0,0,0,0.15);
}

.circle-card.blue {
  background: linear-gradient(135deg, #60a5fa 0%, #3b82f6 100%);
}

.circle-card.orange {
  background: linear-gradient(135deg, #fb923c 0%, #f97316 100%);
}

.circle-inner {
  text-align: center;
  color: #fff;
}

.circle-title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
}

.circle-progress,
.circle-subtitle {
  font-size: 13px;
  opacity: 0.9;
  margin-bottom: 12px;
}

.circle-btn {
  display: inline-block;
  padding: 8px 20px;
  background: rgba(255,255,255,0.95);
  border-radius: 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
  transition: var(--transition);
}

.circle-card.blue .circle-btn {
  color: #3b82f6;
}

.circle-card.orange .circle-btn {
  color: #f97316;
}

.circle-btn:hover {
  background: #fff;
  transform: translateY(-2px);
}

/* =========================================
   Square Cards - 小方形卡片
   ========================================= */
.square-cards {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.square-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 24px 16px;
  background: var(--bg-white);
  border-radius: 12px;
  text-decoration: none;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
}

.square-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--primary-light);
}

.card-icon {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
  font-size: 28px;
}

.card-icon.pink {
  background: var(--pink-light);
}

.card-icon.pink-light {
  background: #fdf2f8;
}

.card-icon.green {
  background: var(--green-light);
}

.card-icon.purple {
  background: var(--purple-light);
}

.card-icon.orange-light {
  background: #fff7ed;
}

.icon-crown,
.icon-fire,
.icon-list,
.icon-target,
.icon-gift,
.icon-graduation,
.icon-scroll,
.icon-chart {
  filter: grayscale(0.3);
}

.card-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
}

/* =========================================
   Footer - 底部
   ========================================= */
.site-footer {
  background: var(--primary);
  padding: 20px 0;
  margin-top: auto;
}

.footer-content {
  text-align: center;
}

.footer-brand {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 8px;
}

.footer-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  font-size: 12px;
  color: rgba(255,255,255,0.8);
  flex-wrap: wrap;
}

.footer-links .divider {
  color: rgba(255,255,255,0.4);
}

/* =========================================
   Floating Customer Service
   ========================================= */
.float-cs {
  position: fixed;
  right: 20px;
  bottom: 80px;
  width: 56px;
  height: 56px;
  background: var(--primary);
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
  transition: var(--transition);
  z-index: 99;
}

.float-cs:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 16px rgba(59, 130, 246, 0.5);
}

.cs-icon {
  font-size: 22px;
  color: #fff;
  margin-bottom: 2px;
}

.cs-text {
  font-size: 10px;
  color: #fff;
}

/* =========================================
   Responsive
   ========================================= */
@media (max-width: 992px) {
  .container {
    padding: 0 16px;
  }
  
  .content-row {
    flex-direction: column;
    gap: 24px;
  }
  
  .circle-card {
    width: 160px;
    height: 160px;
  }
  
  .square-cards {
    width: 100%;
    grid-template-columns: repeat(2, 1fr);
  }
  
  .tab-item {
    padding: 14px 24px;
    font-size: 14px;
  }
  
  .header-selects {
    display: none;
  }
}

@media (max-width: 576px) {
  .square-cards {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  
  .square-card {
    padding: 16px 12px;
  }
  
  .card-icon {
    width: 48px;
    height: 48px;
    font-size: 24px;
  }
  
  .tab-item {
    padding: 12px 16px;
    font-size: 13px;
  }
  
  .footer-links {
    flex-direction: column;
    gap: 4px;
  }
  
  .footer-links .divider {
    display: none;
  }
}