/* Chalkmate — Resources */
.rs-bar{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.rs-search{position:relative;min-width:200px}
.rs-search>svg{position:absolute;left:11px;top:50%;transform:translateY(-50%);width:16px;height:16px;color:var(--text-3);pointer-events:none}
.rs-search .input{padding-left:34px}
.rs-cls{width:auto;min-width:160px;max-width:240px}
.rs-chips{display:flex;gap:6px;flex-wrap:wrap;margin-top:12px}
.rs-chips .chip svg{width:13px;height:13px}
.rs-dz{margin-top:14px}
.rs-dz .dropzone{padding:14px;flex-direction:row;justify-content:center;flex-wrap:wrap;gap:10px}
.rs-dz .dropzone>div.faint{flex-basis:100%}
.rs-tags{display:flex;gap:6px;flex-wrap:wrap;align-items:center}

/* uploads */
.rs-uploads{display:flex;flex-direction:column;gap:6px;margin-bottom:10px}
.rs-up{display:grid;grid-template-columns:1fr auto;gap:4px 10px;align-items:center;padding:8px 12px;border:1px solid var(--line);border-radius:10px;background:var(--panel-2);font-size:13px}
.rs-up .pbar{grid-column:1/-1}
.rs-up.done [data-pct]{color:var(--brand)}
.rs-up.err{border-color:color-mix(in srgb,var(--crit,#ef4444) 40%,var(--line))}
.rs-up.err [data-pct]{color:var(--crit,#ef4444);white-space:normal}

/* grid cards */
.rs-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:14px}
.rs-card{position:relative;background:var(--panel);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;cursor:pointer;display:flex;flex-direction:column;transition:border-color .12s,box-shadow .12s,transform .12s;outline:none}
.rs-card:hover,.rs-card:focus-visible{border-color:color-mix(in srgb,var(--brand) 45%,var(--line));box-shadow:var(--sh-1);transform:translateY(-1px)}
.rs-card .rs-thumb{aspect-ratio:4/3;border-radius:0}
.rs-cb{padding:10px 12px 12px;min-width:0}
.rs-title{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;font-size:14px;line-height:1.3}
.rs-meta{display:flex;gap:6px;flex-wrap:wrap;align-items:center;margin-top:6px;min-width:0}
.rs-meta .tag{max-width:140px}
.li .rs-meta .faint{display:inline}

.rs-thumb{position:relative;display:grid;place-items:center;background:var(--bg-2);color:var(--text-3);overflow:hidden;border-radius:10px;flex:none}
.rs-thumb>svg{width:34px;height:34px;opacity:.75}
.rs-thumb img{width:100%;height:100%;object-fit:cover;display:block;background:#fff}
.rs-thumb.k-pdf{background:color-mix(in srgb,#ef4444 9%,var(--panel));color:#dc2626}
.rs-thumb.k-word{background:color-mix(in srgb,#2563eb 9%,var(--panel));color:#2563eb}
.rs-thumb.k-ppt{background:color-mix(in srgb,#ea580c 10%,var(--panel));color:#ea580c}
.rs-thumb.k-xls{background:color-mix(in srgb,#16a34a 10%,var(--panel));color:#16a34a}
.rs-thumb.k-canva{background:linear-gradient(135deg,color-mix(in srgb,#00c4cc 16%,var(--panel)),color-mix(in srgb,#7d2ae8 16%,var(--panel)));color:#7d2ae8}
.rs-thumb.k-doc{background:var(--ai-soft);color:var(--ai)}
.rs-thumb.k-note{background:color-mix(in srgb,#f59e0b 10%,var(--panel));color:#d97706}
.rs-thumb.k-link,.rs-thumb.k-video{background:var(--brand-soft);color:var(--brand)}
.rs-ext{position:absolute;left:8px;bottom:8px;font-size:10.5px;font-weight:700;letter-spacing:.03em;padding:2px 6px;border-radius:5px;background:color-mix(in srgb,var(--panel) 92%,transparent);color:var(--text-2);max-width:calc(100% - 16px);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;box-shadow:0 1px 2px rgba(0,0,0,.08)}
.rs-ext.pdf{color:#dc2626}.rs-ext.word{color:#2563eb}.rs-ext.ppt{color:#ea580c}.rs-ext.xls{color:#16a34a}.rs-ext.canva{color:#7d2ae8}

.rs-star{border:0;background:transparent;cursor:pointer;color:var(--text-3)}
.rs-card .rs-star{position:absolute;top:8px;right:8px;width:30px;height:30px;border-radius:9px;display:grid;place-items:center;background:color-mix(in srgb,var(--panel) 90%,transparent);opacity:0;transition:opacity .12s}
.rs-card:hover .rs-star,.rs-star.on{opacity:1}
.rs-star svg{width:16px;height:16px}
.rs-star.on{color:#f59e0b}
.rs-star.on svg{fill:#f59e0b}
@media (hover:none){.rs-card .rs-star{opacity:1}}

/* list rows */
.rs-row{cursor:pointer}
.rs-row:hover{background:var(--hover)}
.rs-ic.k-pdf{color:#dc2626}.rs-ic.k-word{color:#2563eb}.rs-ic.k-ppt{color:#ea580c}.rs-ic.k-xls{color:#16a34a}.rs-ic.k-canva{color:#7d2ae8}.rs-ic.k-doc{color:var(--ai)}

/* picker */
.rs-plist{border:1px solid var(--line);border-radius:var(--r);max-height:min(52vh,460px);overflow:auto}
.rs-plist .empty{padding:28px 16px}
.rs-tick{width:24px;height:24px;border-radius:7px;border:1.5px solid var(--line);display:grid;place-items:center;color:transparent;flex:none;background:var(--panel)}
.rs-tick svg{width:15px;height:15px}
.rs-card .rs-tick{position:absolute;top:8px;left:8px}
.sel>.rs-tick,.sel .rs-tick{background:var(--brand);border-color:var(--brand);color:#fff}
.rs-row.sel{background:var(--brand-soft)}
.rs-only{white-space:nowrap;align-items:center}
#content .rs-plist .dropzone,.modal [data-dz] .dropzone{padding:12px}

/* add modal */
.rs-addseg{width:100%}
.rs-addseg button{flex:1;justify-content:center}

/* AI create */
.rs-fmts{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:8px}
.rs-fmt{display:flex;align-items:center;gap:8px;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:var(--panel);font-weight:600;font-size:13.5px;cursor:pointer;color:var(--text);text-align:left}
.rs-fmt svg{width:17px;height:17px;color:var(--ai);flex:none}
.rs-fmt:hover{border-color:color-mix(in srgb,var(--ai) 40%,var(--line))}
.rs-fmt.on{border-color:var(--ai);background:var(--ai-soft);box-shadow:0 0 0 3px color-mix(in srgb,var(--ai) 14%,transparent)}
.rs-srcbtn{justify-content:flex-start;min-width:0}
.rs-srcbtn span{min-width:0}

/* detail */
.rs-dh{display:flex;gap:14px;align-items:flex-start}
.rs-dh .rs-thumb{width:64px;height:64px}
.rs-dh .rs-thumb>svg{width:26px;height:26px}
.rs-dh .rs-ext{display:none}
.rs-dh h2{margin:0;font-size:19px;line-height:1.25;word-break:break-word}
.rs-prev{display:block;border-radius:var(--r);overflow:hidden;border:1px solid var(--line);background:var(--bg-2)}
.rs-prev.img img{display:block;width:100%;max-height:420px;object-fit:contain;background:#fff}
.rs-prev.vid{width:100%;max-height:360px;background:#000}
.rs-prev.pdf{display:flex;flex-direction:column;align-items:center;gap:12px;padding:14px}
.rs-prev.pdf img{max-width:100%;max-height:360px;border-radius:6px;box-shadow:var(--sh-1);background:#fff}
.rs-linkcard{display:flex;align-items:center;gap:12px;padding:10px;border:1px solid var(--line);border-radius:var(--r);text-decoration:none;color:inherit;background:var(--panel)}
.rs-linkcard:hover{border-color:var(--brand)}
.rs-linkcard img,.rs-linkcard .ph{width:96px;height:72px;border-radius:8px;object-fit:cover;flex:none;background:var(--bg-2)}
.rs-linkcard .ph{display:grid;place-items:center;color:var(--brand)}
.rs-linkcard.canva .ph{color:#7d2ae8;background:linear-gradient(135deg,color-mix(in srgb,#00c4cc 16%,var(--panel)),color-mix(in srgb,#7d2ae8 16%,var(--panel)))}
.rs-linkcard>div{flex:1;min-width:0}
.rs-linkcard b{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.rs-linkcard span{font-size:12.5px;color:var(--text-3)}
.rs-linkcard em{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;font-style:normal;font-size:13px;color:var(--text-2);margin-top:3px}
.rs-linkcard>svg{width:16px;height:16px;color:var(--text-3);flex:none}
.rs-doc{border:1px solid var(--line);border-radius:var(--r);padding:18px 20px;background:var(--panel);max-height:60vh;overflow:auto}
.modal.drawer .rs-doc{max-height:none}
.rs-sum p{margin-bottom:0}
.rs-excerpt summary{cursor:pointer}
.rs-excerpt pre{white-space:pre-wrap;font:12.5px/1.5 ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--text-2);max-height:260px;overflow:auto;margin:10px 0 0}
.rs-mdedit{font:13px/1.55 ui-monospace,SFMono-Regular,Menlo,monospace;min-height:340px}
.rs-lesson{width:100%;border:0;background:transparent;text-align:left;font:inherit;color:inherit}

/* canva */
.rs-canva-links{display:flex;flex-wrap:wrap;gap:6px}
.rs-canva-links .chip{text-decoration:none;color:var(--text)}
.rs-canva-links .chip svg{width:14px;height:14px;color:#7d2ae8}
.rs-cgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:12px}
.rs-cd{border:1px solid var(--line);border-radius:var(--r);padding:8px;display:flex;flex-direction:column;gap:3px;min-width:0;background:var(--panel)}
.rs-cdt{aspect-ratio:4/3;border-radius:8px;overflow:hidden;background:var(--bg-2);display:grid;place-items:center;color:#7d2ae8;margin-bottom:4px}
.rs-cdt img{width:100%;height:100%;object-fit:cover}
.rs-cd .btn.sm{padding:0 8px}
.rs-paste .input{min-width:0}

@media (max-width:760px){
  .rs-bar .rs-search{flex-basis:100%}
  .rs-cls{flex:1;max-width:none}
  .rs-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
  .rs-cb{padding:8px 10px 10px}
  .rs-title{font-size:13.5px}
  .rs-meta .tag{max-width:100%}
  .rs-dz .dropzone{display:none}
  .rs-fmts{grid-template-columns:repeat(2,minmax(0,1fr))}
  .rs-cgrid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .rs-linkcard img,.rs-linkcard .ph{width:72px;height:56px}
  .rs-doc{padding:14px}
}
[data-theme="dark"] .rs-ext.word{color:#93b4fb}[data-theme="dark"] .rs-ext.pdf{color:#f87171}