/* ===== 秀钰燚下载中心 · 管理后台样式 ===== */
:root{
  --primary:#2563eb;
  --primary-dark:#1d4ed8;
  --primary-light:#eff6ff;
  --primary-rgb:37,99,235;
  --text:#0f172a;
  --text-2:#475569;
  --text-3:#94a3b8;
  --border:#e8eef6;
  --bg:#f4f6fa;
  --card:#ffffff;
  --danger:#dc2626;
  --danger-light:#fef2f2;
  --success:#16a34a;
  --success-light:#f0fdf4;
  --warning:#d97706;
  --warning-light:#fffbeb;
  --radius:14px;
  --shadow:0 4px 20px rgba(15,23,42,.06);
  --sidebar-w:238px;
}
*{box-sizing:border-box;margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--text);font-size:14px;line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
input,select,textarea,button{font-family:inherit;font-size:14px}

/* 登录页 */
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;
  background:linear-gradient(135deg,#eef2ff 0%,#f8fafc 45%,#e0f2fe 100%)}
.login-card{width:100%;max-width:400px;background:#fff;border-radius:18px;padding:34px 30px;
  box-shadow:0 20px 60px rgba(15,23,42,.12)}
.login-brand{display:flex;align-items:center;gap:12px;margin-bottom:26px}
.login-brand img{width:46px;height:46px;border-radius:13px}
.login-brand h1{font-size:18px;font-weight:700}
.login-brand p{font-size:12px;color:var(--text-3);margin-top:1px}

/* 布局 */
.layout{display:flex;min-height:100vh}
.sidebar{
  width:var(--sidebar-w);background:#0f172a;color:#cbd5e1;flex-shrink:0;
  display:flex;flex-direction:column;position:fixed;top:0;bottom:0;left:0;z-index:60;
  transition:transform .28s ease;
}
.sidebar-brand{display:flex;align-items:center;gap:11px;padding:18px 18px 16px;border-bottom:1px solid rgba(255,255,255,.08)}
.sidebar-brand img{width:36px;height:36px;border-radius:10px}
.sidebar-brand strong{color:#fff;font-size:15px;display:block;line-height:1.3}
.sidebar-brand span{font-size:11px;color:#64748b}
.sidebar-nav{flex:1;overflow-y:auto;padding:14px 12px;display:flex;flex-direction:column;gap:3px}
.sidebar-nav .group{font-size:11px;color:#64748b;padding:14px 10px 6px;letter-spacing:.5px}
.sidebar-nav a{display:flex;align-items:center;gap:11px;padding:10px 12px;border-radius:10px;
  font-size:13.5px;color:#cbd5e1;transition:.18s}
.sidebar-nav a svg{width:18px;height:18px;flex-shrink:0}
.sidebar-nav a:hover{background:rgba(255,255,255,.07);color:#fff}
.sidebar-nav a.active{background:var(--primary);color:#fff;box-shadow:0 6px 16px rgba(var(--primary-rgb),.35)}
.sidebar-foot{padding:14px;border-top:1px solid rgba(255,255,255,.08);font-size:11.5px;color:#64748b}

.main{flex:1;margin-left:var(--sidebar-w);min-width:0;display:flex;flex-direction:column}
.topbar{
  height:62px;background:#fff;border-bottom:1px solid var(--border);
  display:flex;align-items:center;gap:14px;padding:0 22px;position:sticky;top:0;z-index:50;
}
.topbar h1{font-size:16.5px;font-weight:700}
.topbar .spacer{flex:1}
.topbar-user{display:flex;align-items:center;gap:9px;font-size:13px;color:var(--text-2)}
.avatar{width:32px;height:32px;border-radius:50%;background:var(--primary-light);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:13px}
.sidebar-toggle{display:none;background:#f1f5f9;border:0;border-radius:9px;width:38px;height:38px;
  align-items:center;justify-content:center;cursor:pointer}
.sidebar-toggle svg{width:19px;height:19px}
.content{padding:22px;flex:1}
.overlay{display:none;position:fixed;inset:0;background:rgba(15,23,42,.45);z-index:55}
.overlay.show{display:block}

/* 卡片 */
.card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:20px;overflow:hidden}
.card-head{padding:16px 20px;border-bottom:1px solid var(--border);display:flex;align-items:center;
  justify-content:space-between;gap:12px;flex-wrap:wrap}
.card-head h2{font-size:15.5px;font-weight:700}
.card-head p{font-size:12.5px;color:var(--text-3);margin-top:2px}
.card-body{padding:20px}

/* 统计 */
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:16px;margin-bottom:20px}
.stat{background:#fff;border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);display:flex;
  align-items:center;gap:14px}
.stat-icon{width:46px;height:46px;border-radius:13px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.stat-icon svg{width:22px;height:22px}
.stat b{font-size:22px;font-weight:700;display:block;line-height:1.2}
.stat small{font-size:12.5px;color:var(--text-3)}

/* 表单 */
.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.form-grid .full{grid-column:1/-1}
.field{display:flex;flex-direction:column;gap:6px}
.field label{font-size:13px;font-weight:600;color:#334155}
.field .desc{font-size:12px;color:var(--text-3)}
input[type=text],input[type=password],input[type=email],input[type=number],input[type=search],select,textarea{
  width:100%;padding:10px 13px;border:1px solid #dbe3ec;border-radius:10px;background:#fff;
  outline:none;transition:.18s;color:var(--text)}
input:focus,select:focus,textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(var(--primary-rgb),.12)}
textarea{resize:vertical;min-height:80px;line-height:1.6}
input[type=file]{width:100%;padding:9px;border:1px dashed #cbd5e1;border-radius:10px;background:#fbfdff;cursor:pointer}
input[type=color]{width:52px;height:40px;padding:3px;border:1px solid #dbe3ec;border-radius:10px;cursor:pointer;background:#fff}
.switch{display:inline-flex;align-items:center;gap:9px;cursor:pointer;font-size:13.5px;color:var(--text-2)}
.switch input{width:auto}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;padding:10px 18px;border-radius:10px;
  border:0;font-size:13.5px;font-weight:600;cursor:pointer;transition:.18s;white-space:nowrap;text-decoration:none}
.btn svg{width:16px;height:16px}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 4px 14px rgba(var(--primary-rgb),.3)}
.btn-primary:hover{background:var(--primary-dark)}
.btn-ghost{background:#f1f5f9;color:var(--text-2)}
.btn-ghost:hover{background:#e2e8f0}
.btn-danger{background:var(--danger);color:#fff}
.btn-danger:hover{background:#b91c1c}
.btn-light{background:var(--primary-light);color:var(--primary)}
.btn-light:hover{background:#dbeafe}
.btn-sm{padding:7px 13px;font-size:12.5px;border-radius:9px}
.btn-sm svg{width:14px;height:14px}
.btn-block{width:100%}
.btn:disabled{opacity:.55;cursor:not-allowed;box-shadow:none}
.btn-row{display:flex;gap:12px;flex-wrap:wrap}
.actions{display:flex;gap:7px;flex-wrap:wrap}

/* 表格 */
.table-wrap{overflow-x:auto}
table.data{width:100%;border-collapse:collapse;font-size:13.5px}
table.data th,table.data td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--border);vertical-align:middle}
table.data th{background:#f8fafc;color:var(--text-2);font-size:12.5px;font-weight:600;white-space:nowrap}
table.data tbody tr:hover{background:#fbfdff}
table.data td.nowrap{white-space:nowrap}
.cell-title{display:flex;align-items:center;gap:10px;min-width:200px}
.mini-type{width:34px;height:34px;border-radius:9px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.mini-type svg{width:16px;height:16px}
.cell-title strong{font-weight:600;display:block;overflow:hidden;text-overflow:ellipsis;max-width:340px;white-space:nowrap}
.cell-title small{color:var(--text-3);font-size:11.5px}

/* 徽标 */
.badge{display:inline-flex;align-items:center;gap:4px;border-radius:20px;padding:2px 10px;font-size:11.5px;font-weight:600}
.badge-gray{background:#f1f5f9;color:var(--text-2)}
.badge-blue{background:var(--primary-light);color:var(--primary)}
.badge-green{background:var(--success-light);color:var(--success)}
.badge-red{background:var(--danger-light);color:var(--danger)}

/* 提示 */
.alert{padding:12px 16px;border-radius:11px;font-size:13.5px;margin-bottom:18px;display:flex;gap:10px;align-items:flex-start}
.alert svg{width:17px;height:17px;flex-shrink:0;margin-top:2px}
.alert-success{background:var(--success-light);color:#15803d;border:1px solid #bbf7d0}
.alert-error{background:var(--danger-light);color:#b91c1c;border:1px solid #fecaca}
.alert-info{background:var(--primary-light);color:#1e40af;border:1px solid #bfdbfe}
.alert-warn{background:var(--warning-light);color:#92400e;border:1px solid #fde68a}

/* 分类树 */
.tree{list-style:none}
.tree ul{list-style:none;margin-left:22px;border-left:1px dashed #dbe3ec;padding-left:14px}
.tree-item{display:flex;align-items:center;gap:12px;padding:11px 14px;border:1px solid var(--border);
  border-radius:12px;background:#fff;margin-bottom:8px;transition:.18s;flex-wrap:wrap}
.tree-item:hover{border-color:rgba(var(--primary-rgb),.35);box-shadow:var(--shadow)}
.tree-item.active{border-color:var(--primary);background:var(--primary-light)}
.tree-item .t-icon{width:34px;height:34px;border-radius:9px;background:var(--primary-light);color:var(--primary);
  display:flex;align-items:center;justify-content:center;flex-shrink:0}
.tree-item .t-icon svg{width:17px;height:17px}
.tree-item .t-info{flex:1;min-width:150px}
.tree-item .t-info b{font-size:14px;font-weight:600}
.tree-item .t-info small{display:block;color:var(--text-3);font-size:12px}
.tree-item .actions{margin-left:auto}

/* 分页 */
.pagination{display:flex;gap:6px;justify-content:center;margin-top:18px;flex-wrap:wrap}
.pagination a,.pagination span{min-width:34px;height:34px;padding:0 11px;border-radius:9px;background:#fff;
  border:1px solid var(--border);display:inline-flex;align-items:center;justify-content:center;font-size:13px;color:var(--text-2)}
.pagination a:hover{border-color:var(--primary);color:var(--primary)}
.pagination .active{background:var(--primary);border-color:var(--primary);color:#fff}
.pagination .disabled{opacity:.5}

/* 空状态 */
.empty{padding:50px 20px;text-align:center;color:var(--text-3)}
.empty svg{width:44px;height:44px;margin:0 auto 12px;color:#cbd5e1}
.empty p{font-size:13.5px}

/* 拖拽上传区 */
.dropzone{border:2px dashed #cbd5e1;border-radius:14px;padding:30px;text-align:center;background:#fbfdff;
  transition:.2s;cursor:pointer}
.dropzone:hover,.dropzone.dragover{border-color:var(--primary);background:var(--primary-light)}
.dropzone svg{width:40px;height:40px;color:var(--primary);margin:0 auto 10px}
.dropzone b{display:block;font-size:15px;margin-bottom:4px}
.dropzone span{font-size:12.5px;color:var(--text-3)}
/* 上传进度 / 速度 */
.upload-panel{display:none;margin-top:16px}
.upload-panel.show{display:block}
.progress{height:10px;border-radius:99px;background:#eef2f7;overflow:hidden}
.progress > i{display:block;height:100%;width:0;border-radius:99px;
  background:linear-gradient(90deg,var(--primary),var(--primary-dark));transition:width .18s ease}
.upload-stats{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:12.5px;color:var(--text-2);margin-top:8px}
.upload-stats b{color:var(--text);font-weight:600}
.upload-list{display:flex;flex-direction:column;gap:8px;margin-top:14px}
.upload-item{background:#f8fafc;border-radius:10px;padding:10px 13px}
.upload-item .ui-top{display:flex;align-items:center;gap:10px;font-size:13px}
.upload-item .ui-name{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.upload-item .ui-size{color:var(--text-3);font-size:12px;white-space:nowrap}
.upload-item .ui-status{font-size:12px;white-space:nowrap}
.upload-item .progress{margin-top:8px;height:6px}
.upload-item .ui-speed{font-size:11.5px;color:var(--text-3);margin-top:5px;min-height:14px}
.st-done{color:var(--success)}
.st-fail{color:var(--danger)}
.st-wait{color:var(--text-3)}

/* 弹窗 */
.modal{display:none;position:fixed;inset:0;background:rgba(15,23,42,.5);z-index:200;
  align-items:flex-start;justify-content:center;padding:40px 16px;overflow-y:auto}
.modal.show{display:flex}
.modal-box{background:#fff;border-radius:16px;width:100%;max-width:560px;box-shadow:0 24px 70px rgba(15,23,42,.3)}
.modal-head{padding:18px 22px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}
.modal-head h3{font-size:16px}
.modal-close{background:#f1f5f9;border:0;width:32px;height:32px;border-radius:9px;cursor:pointer;
  display:flex;align-items:center;justify-content:center}
.modal-close svg{width:16px;height:16px}
.modal-body{padding:22px}
.modal-foot{padding:16px 22px;border-top:1px solid var(--border);display:flex;justify-content:flex-end;gap:10px}

/* 响应式 */
@media (max-width:1024px){
  .form-grid{grid-template-columns:1fr}
}
@media (max-width:900px){
  .sidebar{transform:translateX(-100%)}
  .sidebar.open{transform:translateX(0)}
  .main{margin-left:0}
  .sidebar-toggle{display:flex}
  .content{padding:16px}
  .topbar{padding:0 16px}
  .topbar h1{font-size:15px}
}
@media (max-width:560px){
  .stat-grid{grid-template-columns:1fr}
  .card-body{padding:16px}
  .topbar-user span{display:none}
  .cell-title strong{max-width:160px}
  .modal{padding:16px}
  .login-card{padding:26px 20px}
}