@import"https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&family=DM+Sans:wght@300;400;500;600&display=swap";*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #f5f7fa;--bg2: #ffffff;--bg3: #f0f2f5;--border: rgba(0, 0, 0, .07);--border2: rgba(0, 0, 0, .13);--text: #0f1923;--text2: #4a5568;--text3: #9aa5b4;--accent: #2563eb;--accent2: #1d4ed8;--green: #16a34a;--red: #dc2626;--yellow: #d97706;--font: "DM Sans", sans-serif;--mono: "DM Mono", monospace;--radius: 10px;--sidebar: 220px;--shadow: 0 1px 3px rgba(0, 0, 0, .07), 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 12px rgba(0, 0, 0, .08)}html,body,#root{height:100%}.adm-layout{display:flex;height:100vh;background:var(--bg);font-family:var(--font);color:var(--text);overflow:hidden}.adm-sidebar{width:var(--sidebar);flex-shrink:0;background:var(--bg2);border-right:1px solid var(--border);display:flex;flex-direction:column;box-shadow:var(--shadow)}.adm-sidebar-logo{padding:24px 22px 20px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:10px}.adm-sidebar-logo-mark{width:32px;height:32px;border-radius:8px;background:var(--accent);display:flex;align-items:center;justify-content:center;font-family:var(--mono);font-weight:500;font-size:14px;color:#fff;flex-shrink:0}.adm-sidebar-logo-text{font-size:13px;font-weight:600;color:var(--text);letter-spacing:.02em;line-height:1.2}.adm-sidebar-logo-sub{font-size:10px;color:var(--text3);font-family:var(--mono);letter-spacing:.05em;text-transform:uppercase}.adm-nav{flex:1;padding:12px 10px;display:flex;flex-direction:column;gap:2px}.adm-nav-section{font-size:9px;font-family:var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--text3);padding:12px 12px 4px}.adm-nav-item{display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:var(--radius);cursor:pointer;font-size:13.5px;font-weight:400;color:var(--text2);border:none;background:none;width:100%;text-align:left;transition:background .15s,color .15s;font-family:var(--font)}.adm-nav-item:hover{background:var(--bg3);color:var(--text)}.adm-nav-item.active{background:#2563eb14;color:var(--accent);font-weight:500}.adm-sidebar-bottom{padding:12px 10px;border-top:1px solid var(--border)}.adm-user-chip{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:var(--radius);margin-bottom:6px}.adm-avatar{width:28px;height:28px;border-radius:6px;background:var(--bg3);border:1px solid var(--border2);display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:600;color:var(--text);flex-shrink:0}.adm-user-info{flex:1;min-width:0}.adm-user-name{font-size:12px;font-weight:500;color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.adm-user-role{font-size:10px;color:var(--text3);font-family:var(--mono)}.adm-main{flex:1;display:flex;flex-direction:column;overflow:hidden;background:var(--bg)}.adm-topbar{height:56px;border-bottom:1px solid var(--border);background:var(--bg2);display:flex;align-items:center;padding:0 28px;gap:12px;flex-shrink:0;box-shadow:var(--shadow)}.adm-topbar-title{font-size:14px;font-weight:600;color:var(--text)}.adm-topbar-sep{color:var(--text3);font-size:16px}.adm-topbar-sub{font-size:13px;color:var(--text3)}.adm-topbar-spacer{flex:1}.adm-page{flex:1;overflow-y:auto;padding:28px}.adm-btn{display:inline-flex;align-items:center;gap:7px;padding:8px 16px;border-radius:8px;font-size:13px;font-weight:500;font-family:var(--font);cursor:pointer;border:none;transition:all .15s;white-space:nowrap}.adm-btn-primary{background:var(--accent);color:#fff}.adm-btn-primary:hover{background:var(--accent2)}.adm-btn-ghost{background:var(--bg3);color:var(--text2);border:1px solid var(--border)}.adm-btn-ghost:hover{border-color:var(--border2);color:var(--text)}.adm-btn-danger{background:#dc262612;color:var(--red);border:1px solid rgba(220,38,38,.15)}.adm-btn:disabled{opacity:.45;cursor:not-allowed}.adm-badge{display:inline-flex;align-items:center;padding:2px 8px;border-radius:4px;font-size:10px;font-family:var(--mono);font-weight:500;text-transform:uppercase;letter-spacing:.05em}.adm-badge-blue{background:#2563eb14;color:var(--accent)}.adm-badge-green{background:#16a34a14;color:var(--green)}.adm-badge-red{background:#dc262614;color:var(--red)}.adm-badge-gray{background:var(--bg3);color:var(--text3)}.adm-card{background:var(--bg2);border:1px solid var(--border);border-radius:12px;padding:20px;box-shadow:var(--shadow)}.adm-card-title{font-size:13px;font-weight:600;color:var(--text);margin-bottom:16px;display:flex;align-items:center;justify-content:space-between}.adm-table{width:100%;border-collapse:collapse}.adm-table th{text-align:left;font-size:10px;font-family:var(--mono);text-transform:uppercase;letter-spacing:.08em;color:var(--text3);padding:8px 14px;border-bottom:1px solid var(--border);font-weight:500;background:var(--bg3)}.adm-table td{padding:12px 14px;font-size:13px;color:var(--text2);border-bottom:1px solid var(--border);vertical-align:middle}.adm-table tr:last-child td{border-bottom:none}.adm-table tr:hover td{background:var(--bg3)}.adm-input{width:100%;background:var(--bg3);border:1px solid var(--border);border-radius:8px;padding:9px 12px;font-size:13px;font-family:var(--font);color:var(--text);outline:none;transition:border-color .15s,box-shadow .15s}.adm-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px #2563eb1a;background:var(--bg2)}.adm-input::placeholder{color:var(--text3)}.adm-input-label{font-size:11px;font-family:var(--mono);text-transform:uppercase;letter-spacing:.06em;color:var(--text3);margin-bottom:6px}.adm-field{margin-bottom:14px}.adm-toast{position:fixed;bottom:24px;right:24px;padding:12px 18px;border-radius:10px;font-size:13px;font-weight:500;display:flex;align-items:center;gap:8px;z-index:1000;animation:slideUp .25s ease;max-width:340px;box-shadow:var(--shadow-md)}.adm-toast-success{background:var(--bg2);border:1px solid rgba(22,163,74,.25);color:var(--green)}.adm-toast-error{background:var(--bg2);border:1px solid rgba(220,38,38,.25);color:var(--red)}@keyframes slideUp{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.adm-course-grid{display:grid;grid-template-columns:1fr 650px;gap:20px;align-items:start}.adm-upload-zone{border:1.5px dashed var(--border2);border-radius:10px;padding:28px;text-align:center;cursor:pointer;transition:border-color .15s,background .15s;display:block}.adm-upload-zone:hover{border-color:var(--accent);background:#2563eb08}.adm-upload-zone input[type=file]{display:none}.adm-upload-zone-icon{color:var(--text3);margin-bottom:8px;display:flex;justify-content:center}.adm-upload-zone-text{font-size:13px;color:var(--text2)}.adm-upload-zone-sub{font-size:11px;color:var(--text3);margin-top:4px}::-webkit-scrollbar{width:5px;height:5px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border2);border-radius:10px}.adm-skeleton{background:linear-gradient(90deg,var(--bg3) 25%,#e8eaed 50%,var(--bg3) 75%);background-size:200% 100%;animation:shimmer 1.4s infinite;border-radius:6px}@keyframes shimmer{to{background-position:-200% 0}}.adm-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:48px;gap:8px;color:var(--text3)}.adm-empty-icon{opacity:.4;margin-bottom:4px}.adm-empty-text{font-size:13px}.adm-back{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--text3);cursor:pointer;border:none;background:none;font-family:var(--font);margin-bottom:20px;padding:0;transition:color .15s}.adm-back:hover{color:var(--text)}.adm-modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0f192359;display:flex;align-items:center;justify-content:center;z-index:500;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.adm-modal{background:var(--bg2);border:1px solid var(--border2);border-radius:14px;padding:24px;width:420px;max-width:calc(100vw - 40px);box-shadow:var(--shadow-md)}.adm-modal-title{font-size:15px;font-weight:600;margin-bottom:20px;display:flex;justify-content:space-between;align-items:center}.adm-modal-close{background:none;border:none;cursor:pointer;color:var(--text3);font-size:18px;line-height:1}.adm-modal-close:hover{color:var(--text)}.adm-modal-footer{display:flex;justify-content:flex-end;gap:8px;margin-top:20px}.adm-divider{border:none;border-top:1px solid var(--border);margin:20px 0}.adm-tag{display:inline-flex;align-items:center;background:var(--bg3);border:1px solid var(--border);border-radius:6px;padding:3px 8px;font-size:11px;font-family:var(--mono);color:var(--text2)}@keyframes adm-pulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(.85)}}.adm-file-dropdown{position:relative;width:100%}.adm-file-dropdown-trigger{width:100%;display:flex;align-items:center;gap:8px;padding:8px 10px;border-radius:8px;border:1px solid var(--border2);background:var(--bg2);cursor:pointer;font-family:var(--font);font-size:12px;color:var(--text);transition:border-color .12s,box-shadow .12s;min-height:36px}.adm-file-dropdown-trigger:hover{border-color:var(--accent)}.adm-file-dropdown-trigger.open{border-color:var(--accent);box-shadow:0 0 0 3px #2563eb14}.adm-file-dropdown-trigger-text{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;text-align:left}.adm-file-dropdown-trigger-text.placeholder{color:var(--text3)}.adm-file-dropdown-chevron{flex-shrink:0;color:var(--text3);transition:transform .15s}.adm-file-dropdown-trigger.open .adm-file-dropdown-chevron{transform:rotate(180deg)}.adm-file-dropdown-menu{position:absolute;top:calc(100% + 4px);left:0;right:0;z-index:200;background:var(--bg2);border:1px solid var(--border2);border-radius:10px;box-shadow:var(--shadow-md);overflow:hidden;animation:adm-dropdown-in .1s ease}@keyframes adm-dropdown-in{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}.adm-file-dropdown-search{padding:8px;border-bottom:1px solid var(--border)}.adm-file-dropdown-search input{width:100%;padding:6px 10px;border-radius:6px;border:1px solid var(--border2);background:var(--bg3);font-family:var(--font);font-size:11px;color:var(--text);outline:none}.adm-file-dropdown-search input::placeholder{color:var(--text3)}.adm-file-dropdown-search input:focus{border-color:var(--accent)}.adm-file-dropdown-list{max-height:200px;overflow-y:auto}.adm-file-dropdown-list::-webkit-scrollbar{width:4px}.adm-file-dropdown-list::-webkit-scrollbar-track{background:transparent}.adm-file-dropdown-list::-webkit-scrollbar-thumb{background:var(--border2);border-radius:2px}.adm-file-dropdown-item{display:flex;align-items:center;gap:10px;padding:8px 12px;cursor:pointer;transition:background .1s;border-bottom:1px solid var(--border)}.adm-file-dropdown-item:last-child{border-bottom:none}.adm-file-dropdown-item:hover{background:var(--bg3)}.adm-file-dropdown-item.selected{background:#2563eb0d}.adm-file-dropdown-item-icon{width:26px;height:26px;border-radius:6px;display:flex;align-items:center;justify-content:center;background:var(--bg3);color:var(--text3);border:1px solid var(--border);flex-shrink:0}.adm-file-dropdown-item.selected .adm-file-dropdown-item-icon{background:#2563eb14;color:var(--accent);border-color:#2563eb33}.adm-file-dropdown-item-info{flex:1;min-width:0}.adm-file-dropdown-item-name{font-size:12px;font-weight:500;color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.adm-file-dropdown-item.selected .adm-file-dropdown-item-name{color:var(--accent)}.adm-file-dropdown-item-path{font-size:10px;color:var(--text3);font-family:var(--mono);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;margin-top:1px}.adm-file-dropdown-empty{padding:20px 12px;text-align:center;font-size:12px;color:var(--text3)}.adm-file-dropdown-check{flex-shrink:0;color:var(--accent)}.adm-input-error{border-color:var(--red, #dc2626)!important}.adm-field-error{font-size:11px;color:var(--red, #dc2626);margin-top:4px}