/* ====== 基础样式 ====== */
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif; font-size: 14px; color: #333; background: #f5f7fa; line-height: 1.6; }
a { color: #4a6cf7; text-decoration: none; }
a:hover { color: #3451b2; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ====== 按钮 ====== */
.btn { display: inline-block; padding: 8px 20px; border: 1px solid #dcdfe6; border-radius: 4px; background: #fff; color: #606266; font-size: 14px; cursor: pointer; transition: all .2s; line-height: 1.5; text-align: center; }
.btn:hover { color: #4a6cf7; border-color: #4a6cf7; }
.btn-primary { background: #4a6cf7; color: #fff; border-color: #4a6cf7; }
.btn-primary:hover { background: #3451b2; border-color: #3451b2; color: #fff; }
.btn-danger { background: #f56c6c; color: #fff; border-color: #f56c6c; }
.btn-danger:hover { background: #d9534f; border-color: #d9534f; color: #fff; }
.btn-success { background: #67c23a; color: #fff; border-color: #67c23a; }
.btn-sm { padding: 4px 12px; font-size: 12px; }
.btn-outline { background: transparent; }
.btn-block { display: block; width: 100%; }
.btn[disabled] { opacity: 0.6; cursor: not-allowed; }

/* ====== 头部 ====== */
.header { background: #fff; border-bottom: 1px solid #e8eaec; box-shadow: 0 1px 4px rgba(0,0,0,0.05); position: sticky; top: 0; z-index: 100; }
.header-inner { display: flex; align-items: center; height: 60px; justify-content: space-between; }
.logo { font-size: 18px; font-weight: 700; color: #4a6cf7; }
.logo img { height: 36px; }
.nav { display: flex; gap: 24px; }
.nav-item { color: #606266; padding: 4px 0; border-bottom: 2px solid transparent; transition: all .2s; }
.nav-item:hover, .nav-item.active { color: #4a6cf7; border-bottom-color: #4a6cf7; }
.user-info { display: flex; align-items: center; gap: 12px; font-size: 13px; color: #909399; }

/* ====== 主体 ====== */
.main { min-height: calc(100vh - 120px); padding: 24px 0; }

/* ====== 卡片 ====== */
.card { background: #fff; border-radius: 8px; padding: 24px; margin-bottom: 20px; box-shadow: 0 1px 4px rgba(0,0,0,0.04); }
.card-title { font-size: 16px; font-weight: 600; margin-bottom: 16px; padding-bottom: 12px; border-bottom: 1px solid #f0f0f0; }

/* ====== 表格 ====== */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 10px 12px; text-align: left; border-bottom: 1px solid #f0f0f0; font-size: 13px; }
th { background: #fafafa; font-weight: 600; color: #606266; white-space: nowrap; }
tr:hover td { background: #f8f9ff; }

/* ====== 表单 ====== */
.form-group { margin-bottom: 16px; }
.form-label { display: block; margin-bottom: 6px; font-weight: 500; font-size: 13px; color: #606266; }
.form-input { width: 100%; padding: 8px 12px; border: 1px solid #dcdfe6; border-radius: 4px; font-size: 14px; transition: border-color .2s; outline: none; }
.form-input:focus { border-color: #4a6cf7; box-shadow: 0 0 0 2px rgba(74,108,247,0.1); }
select.form-input { appearance: auto; }
textarea.form-input { resize: vertical; min-height: 80px; }
.form-hint { font-size: 12px; color: #909399; margin-top: 4px; }

/* ====== 统计卡片 ====== */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 24px; }
.stat-card { background: #fff; border-radius: 8px; padding: 20px; box-shadow: 0 1px 4px rgba(0,0,0,0.04); }
.stat-card .stat-value { font-size: 28px; font-weight: 700; color: #4a6cf7; }
.stat-card .stat-label { font-size: 13px; color: #909399; margin-top: 4px; }

/* ====== 首页 ====== */
.hero { text-align: center; padding: 60px 20px; background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); border-radius: 12px; color: #fff; margin-bottom: 30px; }
.hero h1 { font-size: 36px; margin-bottom: 12px; }
.hero p { font-size: 16px; opacity: 0.9; margin-bottom: 24px; }
.hero .btn { background: #fff; color: #667eea; border: none; font-size: 16px; padding: 12px 32px; }
.hero .btn:hover { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(0,0,0,0.2); }
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 20px; }
.feature-item { background: #fff; border-radius: 8px; padding: 24px; text-align: center; box-shadow: 0 1px 4px rgba(0,0,0,0.04); transition: transform .2s; }
.feature-item:hover { transform: translateY(-4px); }
.feature-item .fi-icon { font-size: 36px; margin-bottom: 12px; }
.feature-item h3 { margin-bottom: 8px; }
.feature-item p { color: #909399; font-size: 13px; }

/* ====== 商品卡片 ====== */
.product-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 20px; }
.product-card { background: #fff; border-radius: 8px; padding: 24px; box-shadow: 0 1px 4px rgba(0,0,0,0.04); text-align: center; transition: transform .2s, box-shadow .2s; }
.product-card:hover { transform: translateY(-4px); box-shadow: 0 4px 16px rgba(0,0,0,0.1); }
.product-card .price { font-size: 28px; font-weight: 700; color: #f56c6c; margin: 12px 0; }
.product-card .price small { font-size: 14px; color: #909399; }
.product-card .quota { color: #67c23a; font-size: 15px; margin-bottom: 16px; }

/* ====== 登录/注册 ====== */
.auth-page { display: flex; justify-content: center; align-items: center; min-height: 100vh; background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); }
.auth-box { background: #fff; border-radius: 12px; padding: 40px; width: 400px; max-width: 90%; box-shadow: 0 8px 32px rgba(0,0,0,0.1); }
.auth-box h2 { text-align: center; margin-bottom: 24px; color: #333; }

/* ====== API文档 ====== */
.api-doc { background: #fff; border-radius: 8px; padding: 24px; }
.api-doc h2 { margin: 20px 0 12px; color: #333; }
.api-doc h3 { margin: 16px 0 8px; color: #4a6cf7; }
.api-doc pre { background: #f6f8fa; border: 1px solid #e1e4e8; border-radius: 6px; padding: 16px; overflow-x: auto; font-size: 13px; line-height: 1.6; margin: 8px 0; }
.api-doc code { background: #f0f2f5; padding: 2px 6px; border-radius: 3px; font-size: 13px; }
.api-doc table { margin: 12px 0; }

/* ====== 分页 ====== */
.pagination { display: flex; justify-content: center; gap: 4px; margin-top: 20px; }
.pagination a, .pagination span { display: inline-block; padding: 6px 14px; border: 1px solid #dcdfe6; border-radius: 4px; font-size: 13px; }
.pagination a:hover { color: #4a6cf7; border-color: #4a6cf7; }
.pagination .active { background: #4a6cf7; color: #fff; border-color: #4a6cf7; }

/* ====== 状态标签 ====== */
.tag { display: inline-block; padding: 2px 8px; border-radius: 3px; font-size: 12px; }
.tag-success { background: #f0f9eb; color: #67c23a; }
.tag-danger { background: #fef0f0; color: #f56c6c; }
.tag-warning { background: #fdf6ec; color: #e6a23c; }
.tag-info { background: #f0f2f5; color: #909399; }

/* ====== 消息提示 ====== */
.alert { padding: 12px 16px; border-radius: 4px; margin-bottom: 16px; font-size: 13px; }
.alert-success { background: #f0f9eb; color: #67c23a; border: 1px solid #e1f3d8; }
.alert-error { background: #fef0f0; color: #f56c6c; border: 1px solid #fde2e2; }
.alert-warning { background: #fdf6ec; color: #e6a23c; border: 1px solid #faecd8; }
.alert-info { background: #f0f2f5; color: #909399; border: 1px solid #e9e9eb; }

/* ====== 两栏布局 ====== */
.two-col { display: grid; grid-template-columns: 250px 1fr; gap: 20px; }
.sidebar-menu-mini { list-style: none; }
.sidebar-menu-mini li a { display: block; padding: 10px 16px; color: #606266; border-radius: 4px; margin-bottom: 2px; }
.sidebar-menu-mini li a:hover, .sidebar-menu-mini li a.active { background: #4a6cf7; color: #fff; }

/* ====== 工单 ====== */
.ticket-chat { max-height: 500px; overflow-y: auto; }
.reply-item { padding: 12px; margin-bottom: 12px; border-radius: 8px; }
.reply-item.reply-user { background: #f0f9eb; margin-left: 40px; }
.reply-item.reply-admin { background: #f0f2f5; margin-right: 40px; }
.reply-meta { font-size: 12px; color: #909399; margin-bottom: 6px; }

/* ====== 空状态 ====== */
.empty { text-align: center; padding: 60px 20px; color: #c0c4cc; }
.empty i { font-size: 48px; margin-bottom: 12px; display: block; }

/* ====== 响应式 ====== */
@media (max-width: 768px) {
    .header-inner { flex-direction: column; height: auto; padding: 12px 0; gap: 8px; }
    .nav { flex-wrap: wrap; justify-content: center; gap: 12px; }
    .user-info { flex-wrap: wrap; justify-content: center; }
    .two-col { grid-template-columns: 1fr; }
    .stat-grid { grid-template-columns: 1fr 1fr; }
    .hero h1 { font-size: 24px; }
}