:root{
  --purple:#3d1435;
  --purple-deep:#2a0e25;
  --pink:#f06292;
  --pink-light:#fdf2f5;
  --bg:#f0f2f5;
  --border:#e8e8e8;
  --text:#333;
  --muted:#999;
  --nav1-w:200px;
  --nav2-w:180px;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;background:var(--bg);color:var(--text);font-size:14px}
.hidden{display:none!important}

/* Login */
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--purple),var(--pink))}
.login-box{width:400px;background:#fff;border-radius:12px;padding:40px;box-shadow:0 12px 40px rgba(0,0,0,.15)}
.login-box h1{font-size:22px;color:var(--purple);margin-bottom:8px}
.login-box p{color:var(--muted);margin-bottom:24px}
.login-box input{width:100%;height:42px;border:1px solid var(--border);border-radius:8px;padding:0 12px;margin-bottom:14px}
.login-box button{width:100%;height:44px;border:none;border-radius:999px;background:var(--pink);color:#fff;font-size:15px;font-weight:600;cursor:pointer}
.login-err{color:#e53935;font-size:13px;margin-bottom:10px;display:none}
.security-banner{margin:0 0 16px;padding:12px 16px;background:#fff8e1;border:1px solid #ffe082;border-radius:8px;color:#795548;font-size:13px}
.form-row textarea{width:100%;min-height:120px;border:1px solid var(--border);border-radius:8px;padding:10px;font-family:monospace;font-size:12px}

/* ===== 三列布局 ===== */
.layout{display:flex;min-height:100vh;height:100vh;overflow:hidden}

/* 左：总导航 */
.nav-primary{
  width:var(--nav1-w);flex-shrink:0;background:var(--purple);color:#fff;
  display:flex;flex-direction:column;z-index:3;
}
.nav-primary .logo{
  padding:22px 18px;font-size:16px;font-weight:700;
  border-bottom:1px solid rgba(255,255,255,.1);letter-spacing:.5px;
}
.nav-primary nav{flex:1;overflow-y:auto;padding:12px 0}
.nav-primary nav a{
  display:flex;align-items:center;gap:10px;
  padding:12px 18px;margin:2px 10px;border-radius:8px;
  color:rgba(255,255,255,.72);text-decoration:none;cursor:pointer;
  border:none;font-size:14px;transition:background .15s,color .15s;
}
.nav-primary nav a .nav-ico{width:18px;text-align:center;opacity:.85;font-size:14px}
.nav-primary nav a:hover{background:rgba(255,255,255,.08);color:#fff}
.nav-primary nav a.active{background:rgba(240,98,146,.28);color:#fff;font-weight:600}
.nav-primary-foot{padding:12px;border-top:1px solid rgba(255,255,255,.1);display:flex;flex-direction:column;gap:6px}
.nav-foot-btn{
  width:100%;height:36px;border:1px solid rgba(255,255,255,.18);border-radius:8px;
  background:transparent;color:rgba(255,255,255,.8);cursor:pointer;font-size:13px;
}
.nav-foot-btn:hover{background:rgba(255,255,255,.08);color:#fff}

/* 中：子导航 */
.nav-secondary{
  width:var(--nav2-w);flex-shrink:0;background:#fff;
  border-right:1px solid var(--border);
  display:flex;flex-direction:column;z-index:2;
}
.nav-sec-head{padding:18px 16px 10px;border-bottom:1px solid #f3f3f3}
.nav-sec-title{font-size:13px;color:var(--muted);font-weight:600;letter-spacing:.3px}
.nav-secondary nav{flex:1;overflow-y:auto;padding:10px 8px}
.nav-secondary nav a{
  display:block;padding:11px 14px;margin:2px 0;border-radius:8px;
  color:#555;text-decoration:none;cursor:pointer;font-size:14px;
  border-left:3px solid transparent;
}
.nav-secondary nav a:hover{background:var(--pink-light);color:var(--pink)}
.nav-secondary nav a.active{
  background:var(--pink-light);color:var(--pink);font-weight:600;
  border-left-color:var(--pink);
}

/* 右：内容 */
.main{flex:1;display:flex;flex-direction:column;min-width:0;background:var(--bg)}
.topbar{
  height:56px;background:#fff;display:flex;align-items:center;justify-content:space-between;
  padding:0 24px;box-shadow:0 1px 4px rgba(0,0,0,.04);flex-shrink:0;
}
.topbar-left{display:flex;align-items:baseline;gap:12px;min-width:0}
.topbar h2{font-size:17px;font-weight:600;white-space:nowrap}
.topbar-crumb{font-size:13px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-actions{display:flex;align-items:center;gap:12px}
.content{padding:20px 24px;flex:1;overflow:auto}

.toolbar{display:flex;align-items:center;gap:12px;margin-bottom:16px;flex-wrap:wrap}
.toolbar .search{flex:1;min-width:200px;max-width:320px;height:36px;border:1px solid var(--border);border-radius:8px;padding:0 12px}
.toolbar .search.search-sm{flex:0;min-width:100px;max-width:120px}
/* 统一工具栏 / 表单下拉 */
.ui-select{
  height:36px;min-width:120px;max-width:100%;
  padding:0 34px 0 12px;border:1px solid var(--border);border-radius:8px;
  background-color:#fff;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23999' d='M2.5 4.5L6 8l3.5-3.5' stroke='%23999' stroke-width='1.2' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 10px center;background-size:12px;
  font-size:14px;line-height:36px;color:var(--text);cursor:pointer;
  appearance:none;-webkit-appearance:none;
  transition:border-color .15s,box-shadow .15s;
}
.ui-select:hover{border-color:#d0d0d0}
.ui-select:focus{outline:none;border-color:var(--pink);box-shadow:0 0 0 3px rgba(240,98,146,.12)}
.ui-select:disabled{background-color:#f5f5f5;color:var(--muted);cursor:not-allowed;opacity:.92}
.ui-select.ui-select-wide{min-width:160px}
.ui-select.ui-select-lg{min-width:220px;max-width:420px}
.toolbar .ui-select,.fm-toolbar .ui-select{flex-shrink:0}
.fm-toolbar .ui-select{min-width:108px}
.settings-select.ui-select{max-width:220px}
.sort-order-cell{display:flex;align-items:center;gap:6px}
.sort-num{font-size:12px;color:var(--muted);min-width:28px}
.sort-btns{display:flex;gap:2px}
.sort-btn{width:28px;min-width:28px;padding:0;justify-content:center}
.sort-btn:disabled{opacity:.35;cursor:not-allowed}
.btn{height:36px;padding:0 16px;border:none;border-radius:8px;font-size:14px;cursor:pointer;display:inline-flex;align-items:center;gap:6px}
.btn-primary{background:var(--pink);color:#fff}
.btn-primary:hover{background:#e91e63}
.btn-ghost{background:#fff;border:1px solid var(--border);color:var(--text)}
.btn-ghost:hover{border-color:var(--pink);color:var(--pink)}
.btn-sm{height:30px;padding:0 12px;font-size:13px}
.btn-icon{width:36px;padding:0;justify-content:center;font-size:16px}

/* 保留 tabs 样式以防旧代码，但默认页面不再使用顶栏 Tab */
.tabs{display:flex;gap:4px;margin-bottom:16px;border-bottom:1px solid var(--border)}
.tab{padding:10px 20px;cursor:pointer;color:var(--muted);border-bottom:2px solid transparent;margin-bottom:-1px}
.tab:hover{color:var(--pink)}
.tab.active{color:var(--pink);font-weight:600;border-bottom-color:var(--pink)}

.panel{background:#fff;border-radius:10px;box-shadow:0 2px 8px rgba(0,0,0,.04);overflow:hidden}
.panel.panel-padded{padding:18px 20px 20px;overflow:visible}
.panel.panel-padded .dash-chart-title{margin:0 0 14px;padding:0}
.panel.panel-padded table{margin:0}
.settings-panel{max-width:720px}
.settings-lead{margin:0 0 24px;font-size:13px;line-height:1.6}
.settings-section{margin-bottom:28px;padding-bottom:4px}
.settings-section-title{margin:0 0 12px;font-size:14px;font-weight:600;color:#333}
.settings-form-row{margin-bottom:0}
.settings-select{max-width:200px}
.settings-input{max-width:320px;padding:8px 12px;border:1px solid var(--border);border-radius:8px;font-size:14px}
.settings-hint{margin:8px 0 0;font-size:12px;line-height:1.5}
.settings-logo-hint{margin-top:10px}
.settings-review-card{
  display:flex;align-items:flex-start;gap:14px;cursor:pointer;
  padding:16px 18px;border:1px solid #f0d4df;border-radius:12px;
  background:linear-gradient(135deg,#fff9fb,#fff);
  transition:border-color .2s,box-shadow .2s,background .2s;
}
.settings-review-card:hover{border-color:#f8bbd0;box-shadow:0 4px 14px rgba(240,98,146,.08)}
.settings-review-card.is-on{
  border-color:#f06292;background:linear-gradient(135deg,#fff5f8,#fff);
  box-shadow:0 4px 16px rgba(240,98,146,.12);
}
.settings-review-input{
  width:18px;height:18px;margin-top:3px;flex-shrink:0;accent-color:var(--pink);cursor:pointer;
}
.settings-review-body{flex:1;min-width:0}
.settings-review-head{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:8px}
.settings-review-name{font-size:15px;font-weight:600;color:#333}
.settings-review-badge{
  display:inline-block;padding:2px 10px;border-radius:999px;font-size:11px;font-weight:600;
  color:#c2185b;background:#fce4ec;
}
.settings-review-card.is-on .settings-review-badge{color:#fff;background:#f06292}
.settings-review-desc{margin:0;font-size:13px;color:#555;line-height:1.6}
.settings-review-tip{margin:8px 0 0;font-size:12px;color:var(--muted);line-height:1.5}
.settings-logo-upload .form-row{margin-bottom:0}
.settings-logo-upload .form-row-logo{align-items:flex-start}
.settings-actions{display:flex;align-items:center;gap:14px;margin-top:8px;padding-top:20px;border-top:1px solid #f0f0f0}

/* 课程分类页 — 推荐标签设置 */
.course-tag-panel{margin-top:16px;overflow:visible}
.course-tag-panel-hd{margin-bottom:20px}
.course-tag-panel-title{margin:0 0 8px;font-size:16px;font-weight:600;color:#333}
.course-tag-panel-desc{margin:0;font-size:13px;line-height:1.6;color:var(--muted)}
.course-tag-grid{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px 20px;
  padding:16px 18px;border-radius:12px;background:linear-gradient(135deg,#fff9fb 0%,#fff 55%);
  border:1px solid #f5e6ec;
}
.course-tag-field label{display:block;font-size:13px;font-weight:500;color:#555;margin-bottom:8px}
.course-tag-field-row{display:flex;align-items:center;gap:12px}
.course-tag-input{
  flex:1;min-width:0;padding:10px 12px;border:1px solid var(--border);border-radius:8px;
  font-size:14px;background:#fff;transition:border-color .2s,box-shadow .2s;
}
.course-tag-input:focus{outline:none;border-color:var(--pink);box-shadow:0 0 0 3px rgba(240,98,146,.12)}
.course-tag-preview{
  flex-shrink:0;padding:5px 14px;border-radius:999px;font-size:12px;font-weight:600;color:#fff;
  line-height:1.2;white-space:nowrap;min-width:52px;text-align:center;
  box-shadow:0 2px 6px rgba(0,0,0,.08);
}
.tag-preview-new{background:#f06292}
.tag-preview-hot{background:#ff8a65}
.course-tag-actions{
  display:flex;align-items:center;gap:14px;margin-top:18px;padding-top:16px;border-top:1px solid #f0f0f0;
}
.course-tag-save-status{font-size:13px}
@media (max-width:720px){
  .course-tag-grid{grid-template-columns:1fr}
}

.upload-inline-hint{margin:8px 0 0;font-size:12px;line-height:1.5}
table{width:100%;border-collapse:collapse}
th,td{padding:12px 14px;text-align:left;border-bottom:1px solid #f5f5f5}
th{background:#fafafa;color:var(--muted);font-weight:500;font-size:13px;white-space:nowrap}
tr:hover td{background:#fafafa}
.tag{display:inline-block;padding:2px 10px;border-radius:999px;font-size:12px}
.tag-on{background:#e8f5e9;color:#4caf50}
.tag-off{background:#fce4ec;color:#e91e63}
.tag-warn{background:#fff3e0;color:#ff9800}
.empty{text-align:center;padding:48px;color:var(--muted)}
.pagination{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-top:1px solid #f5f5f5}
.pagination .info{color:var(--muted);font-size:13px}
.pagination .pages{display:flex;gap:6px}
.pagination button{min-width:32px;height:32px;border:1px solid var(--border);background:#fff;border-radius:6px;cursor:pointer}
.pagination button:hover:not(:disabled){border-color:var(--pink);color:var(--pink)}
.pagination button.active{background:var(--pink);color:#fff;border-color:var(--pink)}
.pagination button:disabled{opacity:.4;cursor:not-allowed}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:20px}
.stats.stats-4{grid-template-columns:repeat(4,1fr)}
.stats.stats-6{grid-template-columns:repeat(6,1fr)}
.stat-card{background:#fff;border-radius:10px;padding:22px;box-shadow:0 2px 8px rgba(0,0,0,.04)}
.stat-card.today{border-top:3px solid var(--pink)}
.stat-card .num{font-size:28px;font-weight:700;color:var(--pink);line-height:1.2;word-break:break-all}
.stat-card .label{margin-top:6px;color:var(--muted);font-size:13px}
.dash-section-hd{display:flex;align-items:baseline;justify-content:space-between;margin:8px 0 12px}
.dash-section-hd h3{font-size:15px;font-weight:600;color:#333}
.dash-hint{font-size:12px;color:var(--muted)}
.dash-charts{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px}
.dash-chart-card{padding:16px 18px 8px}
.dash-chart-card canvas{width:100%;display:block}
.dash-chart-title{font-size:14px;font-weight:600;color:#333;margin-bottom:10px}
.dash-grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.dash-block{padding:16px 18px 18px}
.bar-list{display:flex;flex-direction:column;gap:12px;min-height:120px}
.bar-row{display:grid;grid-template-columns:72px 1fr 88px;gap:10px;align-items:center;font-size:13px}
.bar-row .name{color:#555}
.bar-track{height:10px;background:#f3f3f3;border-radius:999px;overflow:hidden}
.bar-fill{height:100%;background:linear-gradient(90deg,#f48fb1,var(--pink));border-radius:999px;min-width:2px}
.bar-row .meta{text-align:right;color:var(--muted);font-size:12px}
.mini-stats{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.mini-stat{background:#fafafa;border-radius:8px;padding:14px 16px}
.mini-stat .v{font-size:22px;font-weight:700;color:var(--purple)}
.mini-stat .k{margin-top:4px;font-size:12px;color:var(--muted)}
.stats.stats-3{grid-template-columns:repeat(3,1fr);margin-bottom:16px}
.storage-config-grid code{font-size:12px;word-break:break-all}
.storage-overview-hero{
  background:linear-gradient(135deg,#fff 0%,#fdf2f7 48%,#f3e8ff 100%);
  border:1px solid #f0e0ea;
  border-radius:16px;
  padding:22px 24px 20px;
  margin-bottom:20px;
  box-shadow:0 4px 24px rgba(240,98,146,.08);
}
.storage-hero-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;flex-wrap:wrap}
.storage-hero-badge-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:8px}
.storage-hero-badge{display:inline-block;padding:4px 10px;border-radius:999px;font-size:12px;font-weight:600;color:#fff;background:linear-gradient(90deg,#f06292,#ab47bc)}
.storage-hero-time{font-size:12px;color:var(--muted)}
.storage-hero-title{margin:0;font-size:20px;font-weight:700;color:#333}
.storage-hero-desc{margin:6px 0 0;font-size:13px;color:var(--muted);max-width:640px;line-height:1.5}
.storage-hero-actions{display:flex;gap:8px;flex-shrink:0}
.storage-config-strip{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 16px;align-items:center}
.storage-chip{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;background:rgba(255,255,255,.85);border:1px solid #eee;border-radius:999px;font-size:12px;color:#444}
.storage-chip em{font-style:normal;color:var(--muted);margin-right:2px}
.storage-chip code{font-size:11px;background:transparent;padding:0}
.storage-chip-link{font-size:12px;color:var(--pink);margin-left:auto}
.storage-kpi-grid{display:grid;gap:12px;margin-bottom:12px}
.storage-kpi-grid-main{grid-template-columns:repeat(4,1fr)}
.storage-kpi-grid-sub{grid-template-columns:repeat(3,1fr)}
.storage-kpi-card{background:#fff;border-radius:12px;padding:16px 18px;border:1px solid rgba(0,0,0,.04);box-shadow:0 2px 8px rgba(0,0,0,.03)}
.storage-kpi-highlight{border-color:rgba(240,98,146,.25);background:linear-gradient(180deg,#fff,#fff8fb)}
.storage-kpi-bill{border-color:rgba(126,87,194,.2)}
.storage-kpi-muted{background:#fafafa}
.storage-kpi-wide{grid-column:1/-1}
.storage-kpi-label{font-size:12px;color:var(--muted);margin-bottom:6px}
.storage-kpi-value{font-size:26px;font-weight:700;color:var(--pink);line-height:1.2;word-break:break-all}
.storage-kpi-bill .storage-kpi-value{color:var(--purple)}
.storage-kpi-sub{margin-top:8px;font-size:11px;color:var(--muted);line-height:1.45}
.storage-kpi-links{margin-top:10px;display:flex;gap:12px}
.storage-kpi-links a{font-size:12px;color:var(--pink)}
.storage-static-warn{margin-bottom:16px;border:1px solid #ffe082;background:#fffde7;color:#5d4037}
.storage-static-warn code{font-size:11px;background:rgba(0,0,0,.04);padding:2px 6px;border-radius:4px}
.storage-note-warn{color:#c62828}
.storage-mini-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:16px}
.storage-path-cell{max-width:420px;word-break:break-all;font-size:12px}
.storage-top-table td:first-child{max-width:480px;word-break:break-all}
.storage-overview-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:16px}
@media (max-width:1100px){
  .storage-kpi-grid-main,.storage-kpi-grid-sub{grid-template-columns:repeat(2,1fr)}
  .storage-overview-grid{grid-template-columns:1fr}
  .storage-mini-stats{grid-template-columns:1fr}
}
@media (max-width:640px){
  .storage-kpi-grid-main,.storage-kpi-grid-sub{grid-template-columns:1fr}
}
@media (max-width:1400px){
  .stats.stats-6{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:1100px){
  .stats.stats-4,.dash-charts,.dash-grid-2{grid-template-columns:1fr}
  .stats.stats-6{grid-template-columns:repeat(2,1fr)}
}
.modal-mask{position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:1000;display:flex;align-items:center;justify-content:center}
.modal{width:520px;max-width:92vw;max-height:85vh;background:#fff;border-radius:12px;display:flex;flex-direction:column;box-shadow:0 16px 48px rgba(0,0,0,.2)}
.modal-lg{width:640px}
.modal-xl{width:920px;max-width:96vw}
.media-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px}
.media-card{border:1px solid #f0f0f0;border-radius:12px;overflow:hidden;background:#fff;transition:box-shadow .2s}
.media-card:hover{box-shadow:0 4px 16px rgba(0,0,0,.08)}
.media-card-cover{position:relative;height:120px;background:#fafafa;display:flex;align-items:center;justify-content:center;overflow:hidden}
.media-thumb{width:100%;height:100%;object-fit:cover;display:block}
.media-thumb-video{font-size:36px;color:#bbb;background:linear-gradient(135deg,#f5f5f5,#ececec);width:100%;height:100%;display:flex;align-items:center;justify-content:center}
.media-badge{position:absolute;top:8px;left:8px;padding:2px 8px;border-radius:999px;font-size:11px;background:rgba(0,0,0,.55);color:#fff}
.media-badge-cat{left:auto;right:8px;background:rgba(240,98,146,.85)}
.media-card-body{padding:12px 14px 14px}
.media-name{font-size:14px;font-weight:600;color:#333;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.media-meta{margin-top:6px;font-size:12px;color:var(--muted)}
.media-actions{margin-top:10px;display:flex;flex-wrap:wrap;gap:6px}
.media-empty{text-align:center;padding:48px;color:var(--muted)}
.video-preview-box{
  width:100%;min-height:160px;max-height:320px;border:1px dashed var(--border);border-radius:10px;
  background:#fafafa;display:flex;align-items:center;justify-content:center;overflow:hidden;margin-bottom:8px;
}
.video-preview{max-width:100%;max-height:300px;display:block;background:#111;border-radius:6px}
.video-preview-empty{color:var(--muted);font-size:13px;padding:24px;text-align:center;line-height:1.55}
.table-video-cell{min-width:200px;max-width:280px}
.table-video-preview{width:100%;max-width:260px;max-height:120px;display:block;background:#111;border-radius:6px;vertical-align:middle}
.col-video-preview{vertical-align:middle}
.col-actions{white-space:normal;min-width:160px}
.col-actions .btn{margin-bottom:4px}
.upload-progress-wrap{margin-top:12px}
.upload-progress-bar{height:8px;background:#f0f0f0;border-radius:999px;overflow:hidden}
.upload-progress-fill{height:100%;width:0;background:linear-gradient(90deg,#f48fb1,var(--pink));transition:width .2s}
.upload-progress-text{margin-top:6px;font-size:12px;color:var(--muted);text-align:right}
.media-picker-mask{z-index:1100}
.media-picker-mask .modal-bd{max-height:70vh;display:flex;flex-direction:column}
.mp-picker-toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:12px;padding:8px 12px;background:#fafafa;border-radius:8px;border:1px solid #f0f0f0}
.mp-picker-crumb{flex:1;min-width:180px;font-size:13px;line-height:1.6}
.mp-picker-grid{max-height:min(52vh,480px);overflow-y:auto;padding:4px 0}
.mp-picker-info{margin-top:10px;font-size:12px}
.mp-picker-pagination{margin-top:12px;justify-content:flex-end}
.fm-grid-folder.mp-folder{cursor:pointer}
.fm-grid-folder.mp-folder:hover{border-color:#f8bbd0;box-shadow:0 4px 14px rgba(240,98,146,.12)}
.modal-hd{padding:18px 22px;border-bottom:1px solid #f0f0f0;display:flex;justify-content:space-between;align-items:center}
.modal-hd h3{font-size:16px;font-weight:600}
.modal-close{background:none;border:none;font-size:22px;cursor:pointer;color:var(--muted);line-height:1}
.modal-bd{padding:20px 22px;overflow-y:auto;flex:1}
.modal-ft{padding:14px 22px;border-top:1px solid #f0f0f0;display:flex;justify-content:flex-end;gap:10px}
.form-row{margin-bottom:14px}
.form-row label{display:block;font-size:13px;color:#666;margin-bottom:6px}
.form-row input,.form-row textarea{width:100%;border:1px solid var(--border);border-radius:8px;padding:8px 10px;font-size:14px}
.form-row select{
  width:100%;height:38px;padding:0 34px 0 10px;border:1px solid var(--border);border-radius:8px;font-size:14px;
  background-color:#fff;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23999' d='M2.5 4.5L6 8l3.5-3.5' stroke='%23999' stroke-width='1.2' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 10px center;background-size:12px;
  appearance:none;-webkit-appearance:none;cursor:pointer;
}
.form-row select:focus{outline:none;border-color:var(--pink);box-shadow:0 0 0 3px rgba(240,98,146,.12)}
.form-row textarea{min-height:80px;resize:vertical}
.form-row.inline{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.form-row.inline3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px}
.form-section-title{margin:16px 0 10px;padding-top:8px;border-top:1px solid #f0f0f0;font-size:13px;font-weight:600;color:var(--purple)}
.upload-actions{display:flex;align-items:center;gap:10px;margin-top:8px;flex-wrap:wrap}
.hidden-file{display:none!important}
.upload-status{font-size:12px;color:var(--muted)}
.upload-status.ok{color:#4caf50}
.upload-status.err{color:#e53935}
.img-preview-box{
  width:100%;min-height:120px;max-height:220px;border:1px dashed var(--border);border-radius:10px;
  background:#fafafa;display:flex;align-items:center;justify-content:center;overflow:hidden;margin-bottom:8px;
}
.img-preview-box.img-preview-square{
  position:relative;
  width:160px;height:160px;min-height:160px;max-height:160px;aspect-ratio:1/1;
  border-radius:12px;background:#fff;
}
.img-preview-badge{
  position:absolute;left:8px;top:8px;z-index:1;
  padding:2px 8px;border-radius:999px;font-size:11px;line-height:1.4;font-weight:500;
  color:#ad1457;background:rgba(255,255,255,.92);box-shadow:0 1px 4px rgba(0,0,0,.08);
}
.img-preview-badge.is-default{color:#5f6368}
.img-preview{max-width:100%;max-height:200px;object-fit:contain;display:block}
.img-preview-box.img-preview-square .img-preview{
  width:100%;height:100%;max-width:100%;max-height:100%;object-fit:contain;padding:8px;box-sizing:border-box;
}
.img-preview-empty{color:var(--muted);font-size:13px;padding:24px}
.img-preview-box.img-preview-square .img-preview-empty{
  padding:16px;text-align:center;font-size:12px;line-height:1.55;
}
.table-thumb{width:72px;height:48px;object-fit:cover;border-radius:6px;background:#f5f5f5;display:block}
.muted{color:var(--muted);font-size:12px}

.fm-panel{padding:0!important;overflow:hidden}
.fm-breadcrumb{padding:14px 18px;border-bottom:1px solid #f0f0f0;background:#fafafa;font-size:13px;display:flex;flex-wrap:wrap;align-items:center;gap:2px}
.fm-crumb{color:var(--purple);text-decoration:none}
.fm-crumb:hover{text-decoration:underline}
.fm-crumb-sep{color:#ccc;margin:0 4px}
.fm-dropzone{min-height:360px;position:relative;padding:0 0 16px}
.fm-dropzone-hint{margin:12px 18px 0;padding:10px 12px;border:1px dashed #e0e0e0;border-radius:8px;color:var(--muted);font-size:13px;background:#fcfcfc}
.fm-dropzone.dragover .fm-dropzone-hint{border-color:var(--pink);background:#fff5f8;color:#c2185b}
.fm-table{width:100%;border-collapse:collapse;font-size:13px}
.fm-table th,.fm-table td{padding:10px 14px;border-bottom:1px solid #f3f3f3;text-align:left;vertical-align:middle}
.fm-table th{color:#888;font-weight:600;background:#fafafa}
.fm-row-folder{background:#fcfcff}
.fm-col-name{min-width:240px;max-width:420px}
.fm-col-name a{color:#333;text-decoration:none;font-weight:600}
.fm-col-name a:hover{color:var(--purple)}
.fm-icon{display:inline-block;width:22px;margin-right:6px;text-align:center}
.fm-col-actions{white-space:normal;min-width:220px}
.fm-col-actions .btn{margin-bottom:4px}
.fm-upload-panel{margin-top:16px;padding:16px 18px;border:1px solid #f0f0f0;border-radius:12px;background:#fff;box-shadow:0 2px 12px rgba(0,0,0,.04)}
.fm-upload-hd{display:flex;align-items:center;gap:12px;margin-bottom:10px}
.fm-upload-hd .muted{flex:1}
.fm-upload-list{max-height:220px;overflow:auto;margin-top:12px}
.fm-upload-item{display:grid;grid-template-columns:1fr 120px 80px;gap:10px;align-items:center;padding:8px 0;border-bottom:1px solid #f5f5f5;font-size:12px}
.fm-upload-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.fm-upload-bar{height:6px;background:#f0f0f0;border-radius:999px;overflow:hidden}
.fm-upload-bar div{height:100%;background:linear-gradient(90deg,#f48fb1,var(--pink));transition:width .2s}
.fm-upload-state{text-align:right;color:var(--muted)}
.fm-upload-item.error .fm-upload-state{color:#e53935}
.fm-toolbar-sep{display:inline-block;width:1px;height:24px;background:#e8e8e8;margin:0 4px;vertical-align:middle}
.fm-batch-bar{display:flex;align-items:center;gap:10px;padding:10px 16px;margin-bottom:12px;background:#fff8fb;border:1px solid #fce4ec;border-radius:10px;flex-wrap:wrap}
.fm-col-check{width:36px;text-align:center}
.fm-row.selected{background:#fff8fb}
.fm-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:14px;padding:16px}
.fm-grid-item{border:1px solid #f0f0f0;border-radius:12px;padding:12px;background:#fff;transition:box-shadow .2s}
.fm-grid-item:hover{box-shadow:0 4px 14px rgba(0,0,0,.06)}
.fm-grid-icon{font-size:42px;text-align:center;padding:16px 0 8px}
.fm-grid-cover{cursor:pointer;height:100px;display:flex;align-items:center;justify-content:center;background:#fafafa;border-radius:8px;overflow:hidden;margin-bottom:8px}
.fm-grid-thumb{width:100%;height:100%;object-fit:cover}
.fm-grid-thumb-empty{font-size:32px;color:#bbb;width:100%;height:100%;display:flex;align-items:center;justify-content:center}
.fm-grid-name{font-size:13px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.fm-grid-name-file{cursor:pointer}
.fm-grid-name-file:hover{color:var(--pink)}
.fm-grid-meta{font-size:11px;color:var(--muted);margin-top:4px}
.fm-file-name{cursor:pointer}
.fm-file-name:hover{text-decoration:underline;color:var(--pink)}
.fm-grid-actions{margin-top:8px;display:flex;flex-wrap:wrap;gap:4px}
.fm-ref-list{margin:8px 0 0;padding-left:20px;color:#444;line-height:1.8;max-height:240px;overflow:auto}
.fm-ref-list li{margin:4px 0}
.fm-ref-block{border:1px solid #f0f0f0;border-radius:8px;padding:10px 12px;margin-bottom:10px;background:#fafafa}
.fm-ref-file{font-weight:600;margin-bottom:6px}
.media-cleanup-intro{font-size:13px;line-height:1.65;color:#666;margin:0 0 16px;padding:12px 14px;background:#f8f9fb;border:1px solid #eef0f3;border-radius:10px}
.media-cleanup-filters{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:14px}
.media-cleanup-field label{display:block;margin-bottom:6px;font-size:13px;font-weight:500;color:#444}
.media-cleanup-field .ui-select{width:100%}
.media-cleanup-danger{display:flex;align-items:flex-start;gap:10px;padding:10px 12px;border-radius:10px;border:1px solid #ffe0b2;background:#fff8e1;font-size:13px;color:#5d4037;cursor:pointer;margin:0}
.media-cleanup-danger input{margin-top:3px;flex-shrink:0;accent-color:#ff9800}
.media-cleanup-toolbar{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin:16px 0 12px;padding-top:14px;border-top:1px solid #f0f0f0}
.media-cleanup-summary{margin:0 0 10px;font-size:13px;line-height:1.6;color:#444}
.media-cleanup-note{margin:0 0 8px;font-size:12px}
.media-cleanup-table-wrap{max-height:min(46vh,340px);overflow:auto;border:1px solid #f0f0f0;border-radius:10px}
.media-cleanup-table{margin:0}
.media-cleanup-actions{margin-top:14px;display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.media-cleanup-result{min-height:100px}
.media-cleanup-result.is-empty{display:flex;align-items:center;justify-content:center;border:1px dashed #e8e8e8;border-radius:10px;background:#fafafa;color:#999;font-size:13px;text-align:center;padding:28px 16px}
.media-cleanup-empty{padding:20px 16px;border-radius:10px;text-align:center;font-size:13px;line-height:1.6}
.media-cleanup-empty.ok{color:#2e7d32;background:#f1f8e9;border:1px solid #c5e1a5}
@media (max-width:640px){.media-cleanup-filters{grid-template-columns:1fr}}

.notify-panel{max-width:960px}
.notify-tabs{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:20px;padding-bottom:12px;border-bottom:1px solid #f0f0f0}
.notify-tab{padding:8px 16px;border:1px solid #e8e8e8;border-radius:999px;background:#fff;cursor:pointer;font-size:13px}
.notify-tab.active{border-color:#f48fb1;background:#fff5f8;color:#c2185b;font-weight:600}
.notify-test-btn{margin-left:auto}
.notify-switch-card{margin-bottom:16px}
.notify-smtp-row{margin-bottom:16px}
.notify-table{margin-bottom:12px}
.notify-add-form{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-bottom:8px}
.notify-add-form .settings-input{max-width:200px;flex:1;min-width:140px}
.notify-subs{display:flex;flex-wrap:wrap;gap:6px}
.notify-sub-tag{padding:4px 10px;border-radius:999px;font-size:12px;border:1px solid #e0e0e0;color:#666;cursor:pointer;user-select:none;background:#fafafa}
.notify-sub-tag.active{border-color:#f48fb1;background:#fff0f5;color:#c2185b}
.notify-status{font-size:12px;padding:2px 8px;border-radius:999px}
.notify-status.on{background:#e8f5e9;color:#2e7d32}
.notify-status.off{background:#f5f5f5;color:#999}

.mobile-only{display:none!important}

@media (max-width: 960px){
  .stats.stats-6{grid-template-columns:repeat(3,1fr)}
}

@media (max-width: 768px){
  body.nav-open{overflow:hidden;position:fixed;width:100%}
  .mobile-only{display:inline-flex!important}

  .login-box{width:calc(100% - 32px);max-width:400px;padding:32px 24px;margin:16px}

  .layout{flex-direction:column;height:auto;min-height:100vh;overflow:visible}
  .nav-overlay{
    position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:1190;
    -webkit-tap-highlight-color:transparent;
    touch-action:manipulation;
  }
  .nav-primary,.nav-secondary{
    position:fixed;top:0;bottom:0;left:0;width:min(240px,78vw);max-width:78vw;
    transform:translateX(-100%);transition:transform .25s ease;
    box-shadow:8px 0 24px rgba(0,0,0,.15);
  }
  .nav-primary{z-index:1200}
  .nav-secondary{z-index:1210}
  .layout.nav-mobile-primary .nav-primary{transform:translateX(0)}
  .layout.nav-mobile-secondary .nav-secondary{transform:translateX(0)}
  .nav-primary .logo{font-size:16px;padding:18px 16px;text-align:left}
  .nav-primary nav a{justify-content:flex-start;padding:12px 16px;margin:2px 10px}
  .nav-primary nav a span:not(.nav-ico){display:inline}
  .nav-foot-btn{font-size:13px;padding:0 12px}

  .main{min-height:100vh;width:100%}
  .topbar{
    height:auto;min-height:52px;padding:10px 12px;padding-left:max(12px,env(safe-area-inset-left));
    padding-right:max(12px,env(safe-area-inset-right));
  }
  .topbar-left{align-items:center;gap:8px;flex:1;min-width:0}
  .topbar h2{font-size:15px;white-space:normal;line-height:1.35}
  .topbar-crumb{display:none}
  .content{
    padding:12px 14px;padding-bottom:max(16px,env(safe-area-inset-bottom));
  }

  .toolbar{gap:8px}
  .toolbar .search{min-width:0;max-width:none;flex:1 1 120px}
  .ui-select.ui-select-lg{min-width:0;max-width:100%;width:100%}
  .fm-toolbar{flex-wrap:wrap;gap:8px}
  .fm-toolbar .ui-select{min-width:0;flex:1 1 auto}

  .stats.stats-4,.stats.stats-6,.stats.stats-3{grid-template-columns:repeat(2,1fr);gap:10px}
  .dash-charts,.dash-grid-2{grid-template-columns:1fr}
  .storage-overview-grid,.storage-mini-stats{grid-template-columns:1fr}
  .storage-kpi-grid-main,.storage-kpi-grid-sub{grid-template-columns:1fr}
  .course-tag-grid{grid-template-columns:1fr}

  .panel{overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:8px}
  .panel.panel-padded{overflow:visible}
  table{font-size:12px}
  th,td{padding:10px 8px}
  .pagination{flex-direction:column;align-items:stretch;gap:10px;padding:12px}
  .pagination .pages{justify-content:center;flex-wrap:wrap}

  .form-row.inline,.form-row.inline3{grid-template-columns:1fr}
  .settings-panel{max-width:none}
  .settings-select,.settings-input{max-width:none;width:100%}
  .notify-panel{max-width:none}

  .media-cleanup-filters{grid-template-columns:1fr}
  .table-video-cell{min-width:140px;max-width:200px}
  .table-video-preview{max-width:180px;max-height:100px}
  .fm-col-actions,.col-actions{min-width:120px}
  .fm-grid{padding:12px;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:10px}

  .modal-mask{align-items:flex-end;padding:0}
  .modal,.modal-lg,.modal-xl{
    width:100%;max-width:100%;max-height:92vh;border-radius:12px 12px 0 0;margin:0;
  }
  .modal-hd,.modal-bd,.modal-ft{padding-left:16px;padding-right:16px}
  .media-picker-mask .modal{max-height:96vh;border-radius:12px 12px 0 0}

  .btn-icon.mobile-only{width:40px;height:40px;flex-shrink:0}
}

@media (max-width: 400px){
  .stats.stats-4,.stats.stats-6,.stats.stats-3{grid-template-columns:1fr}
  .stat-card .num{font-size:22px}
}