:root{
  color:#1b1c20;background:#f7f7f9;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
  --canvas:#f7f7f9;--surface:#fff;--surface-soft:#f2f2f5;
  --text:#1b1c20;--text-subtle:#62646c;--text-muted:#85878f;
  --border:#e4e4e7;--border-strong:#d4d4d8;
  --brand:#667eea;--brand-bright:#5a6fd6;--brand-soft:rgba(102,126,234,.12);
  --signal:#37d5b0;--danger:#ff665c;--success:#28c460;
  --line:rgba(0,0,0,.08);--shadow:0 8px 30px rgba(0,0,0,.06);
  --bg-body:#f7f7f9;--bg-card:#fff;--bg-topbar:#fff;--bg-sidebar:#fff;
  --bg-input:#fff;--bg-hover:#f2f2f5;--bg-dropdown:#fff;--bg-editor:#fafafa;
  --bg-code:#f2f2f5;--bg-pre:#1a1c20;
  --text-th:#85878f;--text-crumb:#85878f;
  --border-modal:rgba(0,0,0,.08);--shadow-modal:rgba(0,0,0,.2);--shadow-dropdown:rgba(0,0,0,.12);
  --badge-active-bg:#e6f9f1;--badge-active-text:#1ba88c;
  --badge-inactive-bg:#f2f2f5;--badge-inactive-text:#85878f;
  --badge-featured-bg:#fff5e6;--badge-featured-text:#ff9f0a;
  --toggle-off:#d1d1d6;
  --link-color:#fff;--link-bg:#ff665c;--link-border:#ffd5d0;
  --login-bg:#fff;--login-text:#1b1c20;
}

.admin-shell.theme-dark{
  color:#e8e9ee;background:#0b0d10;
  --canvas:#0b0d10;--surface:#13161b;--surface-soft:#20242b;
  --text:#e8e9ee;--text-subtle:#a0a6b0;--text-muted:#747b86;
  --border:#2a2f38;--border-strong:#3a414c;
  --brand:#7868ff;--brand-bright:#978cff;--brand-soft:rgba(120,104,255,.16);
  --signal:#37d5b0;--danger:#ff665c;--success:#28c460;
  --line:rgba(255,255,255,.1);--shadow:0 8px 30px rgba(0,0,0,.3);
  --bg-body:#0b0d10;--bg-card:#13161b;--bg-topbar:#161a1f;--bg-sidebar:#13161b;
  --bg-input:#1a1e24;--bg-hover:#20242b;--bg-dropdown:#1a1e24;--bg-editor:#1a1e24;
  --bg-code:#20242b;--bg-pre:#1a1c20;
  --text-th:#747b86;--text-crumb:#747b86;
  --border-modal:rgba(255,255,255,.1);--shadow-modal:rgba(0,0,0,.4);--shadow-dropdown:rgba(0,0,0,.4);
  --badge-active-bg:rgba(27,168,140,.15);--badge-active-text:#37d5b0;
  --badge-inactive-bg:rgba(255,255,255,.06);--badge-inactive-text:#747b86;
  --badge-featured-bg:rgba(255,159,10,.15);--badge-featured-text:#ff9f0a;
  --toggle-off:#3a414c;
  --link-color:#ff665c;--link-bg:rgba(255,102,92,.12);--link-border:rgba(255,102,92,.3);
  --login-bg:#13161b;--login-text:#e8e9ee;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{width:100%;height:100%;overflow:hidden}
body{font-size:14px;font-weight:450;color:var(--text)}
button,input,select,textarea{font:inherit}
button{cursor:pointer;color:inherit}
a{color:inherit;text-decoration:none}
svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}

/* ===== Login ===== */
.login-body{display:grid;place-items:center;min-height:100vh;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%)}
.login-card{width:380px;background:#fff;border-radius:24px;box-shadow:0 20px 60px rgba(0,0,0,.2);overflow:hidden}
.login-header{padding:36px 34px 24px;text-align:center}
.login-header h1{font-size:22px;font-weight:800;color:#1b1c20}
.login-header p{font-size:13px;color:#85878f;margin-top:4px}
.login-form{padding:0 34px 34px}
.login-error{padding:10px 14px;border-radius:12px;background:#fff0ee;color:#ff665c;font-size:13px;margin-bottom:16px}
.login-field{margin-bottom:16px}
.login-field label{display:block;font-size:13px;font-weight:600;margin-bottom:6px}
.login-field input{width:100%;height:44px;border:1px solid #e4e4e7;border-radius:12px;padding:0 14px;font-size:14px;outline:none}
.login-field input:focus{border-color:var(--brand)}
.login-btn{width:100%;height:46px;border:0;border-radius:14px;background:var(--brand);color:#fff;font-size:15px;font-weight:700;cursor:pointer}
.login-btn:hover{background:var(--brand-bright)}
.login-back{display:block;text-align:center;margin-top:16px;font-size:13px;color:#85878f}

/* ===== Admin Shell ===== */
.admin-shell{display:grid;grid-template-columns:88px minmax(0,1fr);height:100%;background:var(--bg-body)}
.admin-sidebar{grid-row:1/-1;display:flex;flex-direction:column;align-items:center;padding:18px 12px;border-right:1px solid var(--line);background:var(--bg-sidebar);z-index:10}
.admin-logo{position:relative;width:48px;height:48px;border-radius:15px;background:linear-gradient(135deg,#667eea,#764ba2);box-shadow:0 10px 24px rgba(102,126,234,.3);margin-bottom:26px;overflow:hidden;flex-shrink:0}
.admin-logo span:first-child{position:absolute;width:13px;height:30px;left:14px;top:9px;background:#fff;border-radius:10px;transform:rotate(28deg);opacity:.9}
.admin-logo span:last-child{position:absolute;width:14px;height:27px;right:11px;bottom:7px;background:#fff;border-radius:10px;transform:rotate(28deg);opacity:.7}
.admin-sidebar nav{width:100%;display:grid;gap:8px}
.admin-sidebar nav a{position:relative;width:64px;height:66px;border-radius:17px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;color:#5f6368;transition:.2s}
.admin-sidebar nav a:hover{background:var(--bg-hover);color:var(--text)}
.admin-sidebar nav a.active{background:var(--brand-soft);color:var(--brand)}
.admin-sidebar nav a.active::before{content:"";position:absolute;left:-13px;width:3px;height:22px;border-radius:2px;background:var(--brand)}
.admin-sidebar nav a svg{width:22px;height:22px}
.admin-sidebar nav a span{font-size:10px;font-weight:700;text-align:center}
.admin-sidebar-divider{width:40px;height:1px;background:var(--line);margin:8px auto}

/* ===== Admin Content ===== */
.admin-content{min-width:0;display:grid;grid-template-rows:60px minmax(0,1fr);overflow:hidden;height:100%}
.admin-topbar{height:60px;display:flex;align-items:center;padding:0 24px;border-bottom:1px solid var(--line);background:var(--bg-topbar);z-index:9}
.admin-crumb{display:flex;gap:10px;align-items:center;font-size:14px}
.admin-crumb strong{font-size:15px;font-weight:760}
.admin-crumb b{color:#bbb}
.admin-crumb span{color:var(--text-crumb);font-weight:500}
.admin-topbar-actions{margin-left:auto;display:flex;gap:10px}
.admin-topbar-btn{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border:1px solid var(--line);border-radius:12px;background:var(--bg-topbar);font-size:13px;font-weight:600}
.admin-topbar-btn:hover{background:var(--surface-soft)}
.admin-topbar-btn svg{width:16px;height:16px}
.admin-page{overflow:auto;padding:24px 28px 60px}

/* ===== Cards & Tables ===== */
.admin-card{background:var(--bg-card);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);margin-bottom:20px;overflow:hidden}
.admin-card-header{display:flex;justify-content:space-between;align-items:center;padding:18px 22px;border-bottom:1px solid var(--line)}
.admin-card-header h2{font-size:16px;font-weight:700}
.admin-card-body{padding:22px}

/* ===== Stats Grid ===== */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:24px}
.stat-card{background:var(--bg-card);border:1px solid var(--line);border-radius:16px;padding:22px;box-shadow:var(--shadow)}
.stat-card .stat-icon{width:44px;height:44px;border-radius:13px;display:grid;place-items:center;margin-bottom:14px}
.stat-card .stat-icon svg{width:22px;height:22px}
.stat-card .stat-value{font-size:28px;font-weight:800;letter-spacing:-.02em}
.stat-card .stat-label{font-size:12px;color:#85878f;margin-top:2px}
.stat-card.blue .stat-icon{background:#edf3ff;color:#667eea}
.stat-card.green .stat-icon{background:#e6f9f1;color:#1ba88c}
.stat-card.orange .stat-icon{background:#fff5e6;color:#ff9f0a}
.stat-card.purple .stat-icon{background:#f5f0ff;color:#a855f7}

/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;gap:6px;border:0;border-radius:12px;padding:9px 16px;font-size:13px;font-weight:650;cursor:pointer;transition:.2s}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-bright)}
.btn-soft{background:var(--surface-soft);color:var(--text);border:1px solid var(--line)}
.btn-soft:hover{background:var(--border)}
.btn-danger{background:#fff0ee;color:#ff665c;border:1px solid #ffd5d0}
.btn-danger:hover{background:#ffe5e0}
.btn-sm{padding:6px 12px;font-size:12px}
.btn svg{width:16px;height:16px}

/* ===== Tables ===== */
.admin-table{width:100%;border-collapse:collapse}
.admin-table th{text-align:left;padding:12px 16px;font-size:12px;font-weight:700;color:var(--text-th);border-bottom:1px solid var(--line);white-space:nowrap}
.admin-table td{padding:12px 16px;font-size:13px;border-bottom:1px solid var(--line)}
.admin-table tr:last-child td{border-bottom:0}
.admin-table tr:hover td{background:var(--surface-soft)}
.admin-table .table-actions{display:flex;gap:6px}
.admin-table .table-actions button{border:0;background:transparent;padding:6px;border-radius:8px;cursor:pointer;transition:.2s}
.admin-table .table-actions button:hover{background:var(--surface-soft)}
.admin-table .table-actions svg{width:16px;height:16px}
.admin-table .table-actions .edit:hover{color:var(--brand)}
.admin-table .table-actions .del:hover{color:var(--danger)}

/* ===== Forms ===== */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.form-grid .full{grid-column:1/-1}
.form-field{margin-bottom:16px}
.form-field label{display:block;font-size:13px;font-weight:600;margin-bottom:6px}
.form-field input,.form-field select,.form-field textarea{width:100%;border:1px solid var(--border);border-radius:12px;padding:10px 14px;font-size:13px;outline:none;background:var(--bg-input);color:var(--text)}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{border-color:var(--brand)}
.form-field textarea{resize:vertical;line-height:1.6}
.form-field .hint{font-size:11px;color:#85878f;margin-top:4px}
.form-actions{display:flex;gap:10px;margin-top:20px;padding-top:20px;border-top:1px solid var(--line)}

/* ===== Toggle Switch ===== */
.toggle{display:inline-flex;align-items:center;gap:10px}
.toggle input{display:none}
.toggle-slider{width:40px;height:22px;border-radius:14px;background:var(--toggle-off);padding:2px;cursor:pointer;transition:.2s}
.toggle-slider::after{content:"";display:block;width:18px;height:18px;border-radius:50%;background:#fff;box-shadow:0 1px 3px rgba(0,0,0,.2);transition:.2s}
.toggle input:checked+.toggle-slider{background:var(--brand)}
.toggle input:checked+.toggle-slider::after{transform:translateX(18px);background:var(--brand);box-shadow:0 1px 4px rgba(102,126,234,.4)}

/* ===== Badges ===== */
.badge{display:inline-block;padding:3px 9px;border-radius:8px;font-size:11px;font-weight:600}
.badge-active{background:var(--badge-active-bg);color:var(--badge-active-text)}
.badge-inactive{background:var(--badge-inactive-bg);color:var(--badge-inactive-text)}
.badge-featured{background:var(--badge-featured-bg);color:var(--badge-featured-text)}

/* ===== Pagination ===== */
.admin-pagination{display:flex;justify-content:center;gap:8px;padding:20px 0}
.admin-pagination a{display:inline-flex;align-items:center;justify-content:center;min-width:36px;height:36px;padding:0 12px;border:1px solid var(--line);border-radius:10px;background:var(--bg-card);font-size:13px;font-weight:600}
.admin-pagination a.active{background:var(--brand);color:#fff;border-color:var(--brand)}
.admin-pagination a:hover{background:var(--surface-soft)}

/* ===== Search Bar ===== */
.admin-search{display:flex;gap:10px;margin-bottom:16px;align-items:center}
.admin-search input{height:38px;border:1px solid var(--border);border-radius:12px;padding:0 14px;font-size:13px;width:240px;outline:none}
.admin-search select{height:38px;border:1px solid var(--border);border-radius:12px;padding:0 10px;font-size:13px}

/* ===== Rich Text Editor ===== */
.editor-toolbar{display:flex;flex-wrap:wrap;gap:4px;padding:8px;border:1px solid var(--border);border-bottom:0;border-radius:12px 12px 0 0;background:var(--bg-editor)}
.editor-toolbar button{width:34px;height:34px;border:0;border-radius:8px;background:transparent;display:grid;place-items:center;cursor:pointer;transition:.2s}
.editor-toolbar button:hover{background:var(--bg-hover)}
.editor-toolbar button svg{width:16px;height:16px}
.editor-toolbar .divider{width:1px;background:var(--border);margin:4px 2px}
.editor-content{min-height:200px;padding:16px;border:1px solid var(--border);border-radius:0 0 12px 12px;outline:none;line-height:1.8;font-size:14px}
.editor-content:focus{border-color:var(--brand)}
.editor-content h2{font-size:18px;margin:16px 0 8px}
.editor-content h3{font-size:16px;margin:14px 0 6px}
.editor-content p{margin:8px 0}
.editor-content ul,.editor-content ol{margin:8px 0;padding-left:24px}
.editor-content img{max-width:100%;border-radius:8px;margin:8px 0}
.editor-content code{padding:2px 6px;border-radius:4px;background:var(--bg-code);font:13px ui-monospace,monospace}
.editor-content pre{padding:12px;border-radius:8px;background:var(--bg-pre);color:#e0e2e6;overflow-x:auto;font:13px ui-monospace,monospace;margin:8px 0}
.editor-content a{color:var(--brand);text-decoration:underline}

/* ===== Modal ===== */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:100;display:none;place-items:center}.admin-shell.theme-dark .modal-overlay{background:rgba(0,0,0,.6)}
.modal-overlay.show{display:grid}
.admin-shell.theme-dark .btn-danger{background:rgba(255,102,92,.12);color:#ff665c;border-color:rgba(255,102,92,.3)}
.admin-shell.theme-dark .login-card{background:var(--login-bg)}
.admin-shell.theme-dark .login-card h1{color:var(--login-text)}
.modal{width:90%;max-width:640px;max-height:90vh;overflow:auto;background:var(--bg-card);border-radius:20px;box-shadow:0 20px 60px var(--shadow-modal)}
.modal-header{display:flex;justify-content:space-between;align-items:center;padding:20px 24px;border-bottom:1px solid var(--line)}
.modal-header h2{font-size:18px;font-weight:700}
.modal-close{border:0;background:transparent;padding:6px;border-radius:8px;cursor:pointer}
.modal-close svg{width:20px;height:20px}
.modal-body{padding:24px}
.modal-footer{display:flex;justify-content:flex-end;gap:10px;padding:16px 24px;border-top:1px solid var(--line)}

/* ===== Toast ===== */
.toast{position:fixed;top:20px;right:20px;z-index:200;padding:14px 20px;border-radius:14px;background:#1b1c20;color:#fff;font-size:13px;box-shadow:0 10px 30px rgba(0,0,0,.2);opacity:0;transform:translateX(20px);transition:.3s}
.toast.show{opacity:1;transform:translateX(0)}
.toast.success{background:#1ba88c}
.toast.error{background:#ff665c}

/* ===== Responsive ===== */
@media(max-width:1024px){
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .form-grid{grid-template-columns:1fr}
}
@media(max-width:768px){
  .admin-shell{grid-template-columns:64px 1fr}
  .admin-sidebar nav a{width:48px}
  .admin-sidebar nav a span{font-size:9px}
  .stats-grid{grid-template-columns:1fr}
  .admin-search input{width:160px}
}

/* ===== Searchable Select ===== */
.sw-sel{position:relative}
.sw-sel input.sw-sel-box{width:100%;border:1px solid var(--border);border-radius:12px;padding:10px 36px 10px 14px;font-size:13px;outline:none;background:var(--bg-input);color:var(--text);cursor:pointer}
.sw-sel input.sw-sel-box:focus{border-color:var(--brand)}
.sw-sel::after{content:"";position:absolute;right:14px;top:50%;width:8px;height:8px;border-right:2px solid #85878f;border-bottom:2px solid #85878f;transform:translateY(-70%) rotate(45deg);pointer-events:none;transition:.2s}
.sw-sel.open::after{transform:translateY(-20%) rotate(-135deg)}
.sw-sel-dropdown{display:none;position:absolute;top:calc(100% + 4px);left:0;right:0;max-height:260px;overflow-y:auto;background:var(--bg-dropdown);border:1px solid var(--border);border-radius:12px;box-shadow:0 10px 30px var(--shadow-dropdown);z-index:50;padding:4px}
.sw-sel.open .sw-sel-dropdown{display:block}
.sw-sel-search{width:100%;border:1px solid var(--border);border-radius:8px;padding:7px 10px;font-size:13px;outline:none;margin-bottom:4px}
.sw-sel-search:focus{border-color:var(--brand)}
.sw-sel-option{padding:8px 12px;border-radius:8px;font-size:13px;cursor:pointer;transition:.15s}
.sw-sel-option:hover{background:var(--brand-soft);color:var(--brand)}
.sw-sel-option.selected{background:var(--brand-soft);color:var(--brand);font-weight:600}
.sw-sel-empty{padding:12px;text-align:center;color:var(--text-muted);font-size:13px}

/* ===== Instant Upload ===== */
.upload-preview{display:flex;flex-wrap:wrap;gap:12px;margin-top:10px}
.upload-item{position:relative;width:120px;border:1px solid var(--border);border-radius:12px;overflow:hidden;background:var(--bg-card)}
.upload-item img{width:100%;height:80px;object-fit:cover;display:block}
.upload-item-info{padding:6px 8px}
.upload-item-name{font-size:11px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.upload-progress{height:4px;background:var(--surface-soft);border-radius:2px;margin:4px 0;overflow:hidden}
.upload-progress-fill{height:100%;width:0;background:var(--brand);border-radius:2px;transition:width .2s}
.upload-item-status{font-size:10px;color:var(--text-muted)}
.upload-item.upload-error{border-color:#ff665c}
.upload-item .upload-remove{position:absolute;top:4px;right:4px;width:20px;height:20px;border:0;border-radius:50%;background:rgba(0,0,0,.5);color:#fff;font-size:14px;cursor:pointer;display:none;place-items:center;line-height:1}
.upload-item.upload-done .upload-remove{display:grid}
.upload-item .upload-remove:hover{background:rgba(255,102,92,.8)}