/* 不错123试卷网 - 全站样式（轻量手写，无框架） */
* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --primary: #2563eb;
  --primary-dark: #1e40af;
  --accent: #f59e0b;
  --text: #1f2937;
  --text-light: #6b7280;
  --bg: #f3f6fb;
  --card: #ffffff;
  --border: #e5e7eb;
  --success: #16a34a;
  --danger: #dc2626;
}
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }
.container { max-width: 1200px; margin: 0 auto; padding: 0 16px; }

/* 头部 */
.site-header { background: var(--card); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 10; }
.header-inner { display: flex; align-items: center; gap: 24px; padding: 12px 16px; max-width: 1200px; margin: 0 auto; flex-wrap: wrap; }
.logo { font-size: 22px; font-weight: 700; color: var(--primary); }
.logo span { color: var(--accent); }
.main-nav { display: flex; gap: 18px; align-items: center; }
.main-nav a { color: var(--text); font-size: 15px; }
.main-nav a:hover { color: var(--primary); }
.search-box { flex: 1; max-width: 420px; display: flex; }
.search-box input { flex: 1; padding: 8px 12px; border: 1px solid var(--border); border-radius: 6px 0 0 6px; outline: none; }
.search-box button { padding: 8px 16px; background: var(--primary); color: #fff; border: none; border-radius: 0 6px 6px 0; cursor: pointer; }
.header-auth { margin-left: auto; display: flex; gap: 12px; align-items: center; font-size: 14px; }

/* 按钮 */
.btn { display: inline-block; padding: 8px 18px; border-radius: 6px; border: none; cursor: pointer; font-size: 14px; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); color: #fff; }
.btn-outline { background: #fff; color: var(--primary); border: 1px solid var(--primary); }
.btn-success { background: var(--success); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-sm { padding: 4px 12px; font-size: 13px; }

/* 卡片与布局 */
.card { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 20px; margin-bottom: 20px; }
.section-title { font-size: 18px; font-weight: 600; margin-bottom: 14px; padding-left: 10px; border-left: 4px solid var(--primary); }
.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

/* 分类入口 */
.cat-block { margin-bottom: 10px; }
.cat-label { font-weight: 600; margin-right: 8px; color: var(--text); }
.cat-list { display: inline; }
.cat-list a { display: inline-block; margin: 4px 6px 4px 0; padding: 2px 10px; border-radius: 14px; background: var(--bg); color: var(--text); font-size: 13px; }
.cat-list a:hover, .cat-list a.active { background: var(--primary); color: #fff; }

/* 试卷列表 */
.paper-item { display: flex; justify-content: space-between; align-items: center; padding: 14px 4px; border-bottom: 1px solid var(--border); }
.paper-item:last-child { border-bottom: none; }
.paper-title { font-size: 16px; font-weight: 500; }
.paper-meta { font-size: 13px; color: var(--text-light); margin-top: 4px; }
.paper-meta .tag { display: inline-block; background: #eef2ff; color: var(--primary); border-radius: 4px; padding: 0 8px; margin-right: 6px; }
.paper-cost { color: var(--accent); font-weight: 600; white-space: nowrap; margin-left: 16px; }

/* 详情页 */
.detail-title { font-size: 24px; font-weight: 700; margin-bottom: 10px; }
.detail-meta { color: var(--text-light); font-size: 14px; margin-bottom: 16px; }
.detail-meta span { margin-right: 16px; }
.breadcrumb { font-size: 13px; color: var(--text-light); margin-bottom: 14px; }
.detail-desc { background: var(--bg); border-radius: 8px; padding: 16px; margin-bottom: 20px; white-space: pre-wrap; }
.download-box { text-align: center; padding: 24px; background: #fffbeb; border: 1px solid #fde68a; border-radius: 10px; }

/* 表单 */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-weight: 500; margin-bottom: 6px; }
.form-control { width: 100%; padding: 9px 12px; border: 1px solid var(--border); border-radius: 6px; font-size: 14px; }
.form-control:focus { border-color: var(--primary); outline: none; }
.form-hint { font-size: 12px; color: var(--text-light); margin-top: 4px; }
.form-card { max-width: 560px; margin: 40px auto; }

/* 表格 */
.table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table th, .table td { padding: 10px 12px; border-bottom: 1px solid var(--border); text-align: left; }
.table th { background: var(--bg); font-weight: 600; }

/* 分页 */
.pagination { display: flex; gap: 6px; justify-content: center; margin: 20px 0; }
.pagination a, .pagination span { padding: 6px 12px; border: 1px solid var(--border); border-radius: 6px; background: #fff; font-size: 14px; }
.pagination .current { background: var(--primary); color: #fff; border-color: var(--primary); }

/* 消息 */
.alert { padding: 12px 16px; border-radius: 8px; margin-bottom: 16px; }
.alert-success { background: #ecfdf5; color: #065f46; border: 1px solid #a7f3d0; }
.alert-error { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }

/* 状态标签 */
.status { display: inline-block; padding: 1px 8px; border-radius: 4px; font-size: 12px; }
.status-PENDING { background: #fef3c7; color: #92400e; }
.status-APPROVED { background: #d1fae5; color: #065f46; }
.status-REJECTED { background: #fee2e2; color: #991b1b; }
.status-CREATED { background: #fef3c7; color: #92400e; }
.status-PAID { background: #d1fae5; color: #065f46; }
.status-CLOSED { background: #e5e7eb; color: #374151; }

/* 个人中心/后台布局 */
.side-layout { display: grid; grid-template-columns: 200px 1fr; gap: 20px; align-items: start; }
@media (max-width: 768px) { .side-layout { grid-template-columns: 1fr; } }
.side-nav { background: var(--card); border: 1px solid var(--border); border-radius: 10px; overflow: hidden; }
.side-nav a { display: block; padding: 12px 16px; color: var(--text); border-bottom: 1px solid var(--border); }
.side-nav a:last-child { border-bottom: none; }
.side-nav a.active, .side-nav a:hover { background: var(--primary); color: #fff; }

/* 充值 */
.recharge-options { display: flex; gap: 12px; flex-wrap: wrap; margin: 16px 0; }
.recharge-options label { border: 2px solid var(--border); border-radius: 8px; padding: 12px 22px; cursor: pointer; text-align: center; }
.recharge-options input { display: none; }
.recharge-options input:checked + .opt, .recharge-options label:has(input:checked) { border-color: var(--primary); background: #eff6ff; }
.opt .yuan { font-size: 20px; font-weight: 700; color: var(--primary); }
.opt .pts { font-size: 12px; color: var(--text-light); }
.pay-channels { display: flex; gap: 16px; margin: 12px 0; }
.qr-box { text-align: center; padding: 30px; }
.qr-box img { margin: 16px auto; display: block; border: 1px solid var(--border); border-radius: 8px; }

/* 页脚 */
.site-footer { background: #1f2937; color: #9ca3af; text-align: center; padding: 28px 16px; margin-top: 40px; font-size: 13px; }
.site-footer a { color: #d1d5db; }

/* 首页 hero */
.hero { background: linear-gradient(120deg, #2563eb, #4f46e5); color: #fff; border-radius: 12px; padding: 40px 32px; margin-bottom: 24px; }
.hero h1 { font-size: 28px; margin-bottom: 8px; }
.hero p { opacity: .9; }
.hero .stats { margin-top: 16px; font-size: 14px; opacity: .85; }