.library-controls{display:grid;grid-template-columns:1fr 190px 190px auto;gap:9px;margin-bottom:15px}.document-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(235px,1fr));gap:11px}.document-card{min-height:155px;display:flex;flex-direction:column;gap:7px}.document-icon{font-size:34px}.document-card h3{margin:0;font-size:15px;overflow-wrap:anywhere}.document-meta{color:var(--muted);font-size:12px;min-height:34px}.document-actions{margin-top:auto;display:flex;gap:7px}.library-tip{margin-bottom:14px}.file-status{font-size:12px;color:var(--muted);margin:6px 0}@media(max-width:850px){.library-controls{grid-template-columns:1fr 1fr}.library-controls input{grid-column:1/-1}}@media(max-width:500px){.library-controls{grid-template-columns:1fr}.document-grid{grid-template-columns:1fr}}
.course-import{margin-top:15px;border-color:#355c8d}.course-controls{display:grid;grid-template-columns:190px auto 1fr;gap:9px;margin-top:12px}.course-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:11px;margin-top:12px}.course-card{display:grid;grid-template-columns:auto 1fr;gap:10px}.course-card h3{margin:0 0 4px;overflow-wrap:anywhere}.course-card p{margin:5px 0 10px;font-size:12px;line-height:1.5}.topic-tags{display:flex;flex-wrap:wrap;gap:5px;margin-top:6px}.topic-tags span{font-size:11px;padding:3px 7px;border-radius:999px;background:#17263a;color:#b9d5ff}@media(max-width:700px){.course-controls{grid-template-columns:1fr}.course-grid{grid-template-columns:1fr}}
.folder-create{display:grid;grid-template-columns:1fr 180px 180px auto;gap:9px;margin-top:12px}.folder-tree{display:flex;gap:7px;flex-wrap:wrap;margin-top:12px}.folder-pill{border:1px solid var(--line);background:var(--panel2);color:var(--text);border-radius:999px;padding:7px 10px;cursor:pointer}.folder-pill.active{border-color:#76acff;background:#17263a}.document-card h3{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.35;min-height:40px}.danger{color:#ff9baa;border-color:#70404a}@media(max-width:850px){.folder-create{grid-template-columns:1fr 1fr}.folder-create input{grid-column:1/-1}}@media(max-width:500px){.folder-create{grid-template-columns:1fr}}
.explorer-hero{display:flex;justify-content:space-between;gap:20px;align-items:center;margin-bottom:14px;background:linear-gradient(120deg,#132d45,#12151d 70%)}.explorer-hero h2{margin:3px 0 6px}.explorer-tips{display:grid;gap:6px;color:#b9d5ff;font-size:12px}.explorer{min-height:420px}.explorer-bar{display:flex;align-items:center;gap:9px;padding-bottom:13px;border-bottom:1px solid var(--line)}.breadcrumbs{flex:1;display:flex;gap:8px;align-items:center;overflow:auto;white-space:nowrap;color:var(--muted);font-size:13px}.breadcrumbs b{color:#54708d}.breadcrumbs .current{color:var(--text);font-weight:800}.explorer-notice{margin:13px 0;padding:10px 12px;border-radius:10px;background:#142235;color:#b9d5ff;font-size:13px}.explorer-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(155px,1fr));gap:11px;padding-top:15px}.explorer-item{min-height:145px;padding:14px;border:1px solid var(--line);border-radius:14px;background:var(--panel2);text-align:left;color:var(--text);display:flex;flex-direction:column;gap:5px;transition:.16s transform,.16s border-color}.folder-item{cursor:pointer}.explorer-item:hover{transform:translateY(-2px);border-color:#5185b8}.explorer-icon{font-size:31px}.folder-item .explorer-icon{filter:drop-shadow(0 4px 10px var(--folder-color,#4f9eff))}.explorer-item strong{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.3}.explorer-item small{color:var(--muted)}.explorer-actions{display:flex;gap:6px;margin-top:auto}.explorer-actions .btn{font-size:11px;padding:6px 8px}.explorer-empty{grid-column:1/-1;min-height:120px;justify-content:center;text-align:center;line-height:1.6}@media(max-width:650px){.explorer-hero{display:block}.explorer-tips{margin-top:12px}.explorer-bar{flex-wrap:wrap}.breadcrumbs{order:3;flex-basis:100%}.explorer-grid{grid-template-columns:repeat(2,1fr)}}