/* ============================================================
   溯源授权 · 后台样式
   ============================================================ */
*{box-sizing:border-box;margin:0;padding:0}
:root{--sidebar:#1f2d45;--sidebar-w:230px;--primary:#1e3c72;--primary2:#2a5298;--bg:#f4f6fa;--border:#e3e7ef;--text:#2c3e50;--muted:#7f8c8d}
html,body{height:100%}
body{font-family:"PingFang SC","Microsoft YaHei",system-ui,sans-serif;background:var(--bg);color:var(--text);font-size:14px}
a{color:var(--primary2);text-decoration:none}

.layout{display:flex;min-height:100vh}
.sidebar{width:var(--sidebar-w);background:var(--sidebar);color:#cbd5e8;flex-shrink:0;display:flex;flex-direction:column;position:fixed;top:0;bottom:0;left:0;z-index:60}
.sidebar .s-brand{padding:22px 20px;font-size:17px;font-weight:700;color:#fff;border-bottom:1px solid rgba(255,255,255,.08);display:flex;align-items:center;gap:10px}
.sidebar .s-brand .b{background:#fff;color:var(--primary);width:32px;height:32px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-weight:800}
.sidebar nav{padding:14px 10px;flex:1;overflow-y:auto}
.sidebar nav a{display:flex;align-items:center;gap:10px;padding:11px 14px;border-radius:8px;color:#b9c6dc;margin-bottom:4px;transition:.2s;font-size:14px}
.sidebar nav a:hover{background:rgba(255,255,255,.08);color:#fff}
.sidebar nav a.active{background:var(--primary2);color:#fff;font-weight:600}
.sidebar nav a .ic{font-size:16px;width:20px;text-align:center}
.sidebar .s-foot{padding:14px 20px;border-top:1px solid rgba(255,255,255,.08);font-size:12px;color:#7f8da8}

.main{flex:1;margin-left:var(--sidebar-w);display:flex;flex-direction:column;min-height:100vh}
.topbar{background:#fff;border-bottom:1px solid var(--border);padding:0 24px;height:60px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:40}
.topbar .t-title{font-size:17px;font-weight:700;color:var(--primary)}
.topbar .t-user{display:flex;align-items:center;gap:14px;color:var(--muted)}
.topbar .t-user .avatar{width:32px;height:32px;border-radius:50%;background:var(--primary2);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700}
.content{padding:24px;flex:1}

.page-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;flex-wrap:wrap;gap:10px}
.page-head h1{font-size:20px;color:var(--primary)}
.page-head .actions{display:flex;gap:10px;flex-wrap:wrap}

.btn{display:inline-block;padding:9px 18px;border:0;border-radius:8px;font-size:14px;font-weight:600;cursor:pointer;transition:.2s;font-family:inherit;text-align:center}
.btn-primary{background:var(--primary2);color:#fff}
.btn-primary:hover{opacity:.9}
.btn-danger{background:#e74c3c;color:#fff}
.btn-danger:hover{opacity:.9}
.btn-ghost{background:#fff;color:var(--primary2);border:1px solid var(--border)}
.btn-ghost:hover{background:#f0f3fa}
.btn-sm{padding:5px 12px;font-size:13px}

.card{background:#fff;border:1px solid var(--border);border-radius:12px;padding:20px;margin-bottom:18px}
.card h2{font-size:16px;color:var(--primary);margin-bottom:14px}

/* 统计卡片 */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px;margin-bottom:22px}
.stat{background:#fff;border:1px solid var(--border);border-radius:12px;padding:18px}
.stat .num{font-size:30px;font-weight:800;color:var(--primary)}
.stat .lbl{font-size:13px;color:var(--muted);margin-top:4px}
.stat .ic{font-size:22px;float:right}

/* 表格 */
.table-wrap{overflow-x:auto}
table.tbl{width:100%;border-collapse:collapse}
.tbl th{background:#f7f9fc;color:#555;font-weight:600;text-align:left;padding:11px 14px;border-bottom:2px solid var(--border);white-space:nowrap;font-size:13px}
.tbl td{padding:11px 14px;border-bottom:1px solid var(--border);vertical-align:middle}
.tbl tr:hover td{background:#fafbfe}
.tbl .ops{display:flex;gap:6px;flex-wrap:wrap}

/* 徽章 */
.badge{display:inline-block;padding:3px 10px;border-radius:20px;font-size:12px;font-weight:600;color:#fff}
.badge-0{background:#e67e22}.badge-1{background:#2980b9}.badge-2{background:#27ae60}.badge-3{background:#7f8c8d}
.badge-green{background:#27ae60}.badge-gray{background:#7f8c8d}

/* 表单 */
.form-group{margin-bottom:16px}
.form-group label{display:block;font-weight:600;color:#444;margin-bottom:6px;font-size:14px}
.form-group label .req{color:#e74c3c}
.form-control{width:100%;padding:10px 13px;border:1px solid var(--border);border-radius:8px;font-size:14px;outline:none;background:#fff;transition:border .2s;font-family:inherit}
.form-control:focus{border-color:var(--primary2)}
textarea.form-control{min-height:90px;resize:vertical}
.form-hint{font-size:12px;color:var(--muted);margin-top:4px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-actions{margin-top:20px;display:flex;gap:10px}

/* 提示 */
.alert{padding:11px 15px;border-radius:8px;font-size:14px;margin-bottom:16px}
.alert-error{background:#fdecea;color:#c0392b;border:1px solid #f5c6cb}
.alert-ok{background:#eafaf1;color:#1e8449;border:1px solid #abebc6}
.alert-info{background:#eaf4fd;color:#21618c;border:1px solid #aed6f1}

/* 分页 */
.pager{display:flex;gap:6px;margin-top:16px;flex-wrap:wrap}
.pager a,.pager span{display:inline-block;padding:7px 13px;border:1px solid var(--border);border-radius:7px;font-size:13px;background:#fff;color:var(--primary2)}
.pager .cur{background:var(--primary2);color:#fff;border-color:var(--primary2);font-weight:600}
.pager .disabled{color:#ccc;pointer-events:none}

/* 登录 */
.login-bg{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#1e3c72,#2a5298);padding:20px}
.login-card{background:#fff;border-radius:16px;width:100%;max-width:400px;padding:34px;box-shadow:0 20px 60px rgba(0,0,0,.3)}
.login-card h1{font-size:20px;color:var(--primary);text-align:center;margin-bottom:22px}
.login-card .brand-big{text-align:center;font-size:36px;margin-bottom:6px}

/* 移动端 */
@media (max-width:820px){
  .sidebar{width:200px}
  .main{margin-left:200px}
  .content{padding:16px}
  .form-row{grid-template-columns:1fr}
  .topbar{padding:0 16px}
  .t-title{font-size:15px}
}
@media (max-width:640px){
  .sidebar{width:64px}
  .sidebar .s-brand .b{width:30px;height:30px}
  .sidebar .s-brand span.txt{display:none}
  .sidebar nav a span.t{display:none}
  .main{margin-left:64px}
  .content{padding:12px}
  .topbar .t-title{display:none}
}