/* ---------- library page-specific styles (reuse style.css tokens) ---------- */
.lib-topbar{border-bottom:1px solid var(--line)}
.lib-back{display:inline-flex;align-items:center;gap:8px;font-size:12px;color:var(--muted)}
.lib-back:hover{color:var(--ember)}
.lib-back span{font-size:15px}
.lib-intro{padding-top:34px;padding-bottom:26px}
.lib-intro h1{font:500 clamp(28px,3.4vw,40px)/1.35 var(--serif);letter-spacing:-.8px;margin:14px 0 12px}
.lib-intro h1 .accent{color:var(--ember)}
.lib-intro p{font-size:13px;line-height:1.9;max-width:640px}
.lib-search{display:flex;gap:8px;margin-top:24px;max-width:640px}
.lib-search input{flex:1;min-width:0;border:1px solid var(--line);border-radius:6px;padding:12px 14px;font-size:13px;background:#fff;color:var(--ink)}
.lib-search input::placeholder{color:#88a0a0}
.lib-search .button{padding:12px 20px}
.lib-search-note{font-size:11px;color:var(--muted);margin-top:10px}
.lib-search-note button{background:none;border:0;color:var(--brand);font-size:11px;padding:0;text-decoration:underline}
.lib-search-note button:hover{color:var(--ember)}

/* two-pane browser */
.browser{display:grid;grid-template-columns:300px minmax(0,1fr);gap:26px;align-items:start;padding-bottom:80px}
.rail{position:sticky;top:20px;border:1px solid var(--line);border-radius:9px;background:#fff;overflow:hidden}
.rail-head{padding:16px 16px 8px}
.rail-head .eyebrow{font-size:9px;letter-spacing:1.6px}
.rail-search{margin:10px 0 4px;position:relative}
.rail-search input{width:100%;border:1px solid var(--line);border-radius:6px;padding:9px 12px;font-size:12px;background:var(--surface);color:var(--ink)}
.rail-search input::placeholder{color:#88a0a0}
.rail-list{max-height:calc(100vh - 140px);overflow:auto;padding:4px 8px 10px}
.school-btn{width:100%;text-align:left;border:0;background:transparent;color:var(--ink);border-radius:6px;padding:10px 11px;display:flex;align-items:baseline;gap:8px;font-size:13px;line-height:1.4}
.school-btn:hover{background:var(--surface)}
.school-btn[aria-current=true]{background:#e8f2f0;color:var(--brand);font-weight:600}
.school-btn .nm{flex:1;min-width:0}
.school-btn .cnt{font:10px/1.6 monospace;color:var(--muted);white-space:nowrap}
.school-btn[aria-current=true] .cnt{color:var(--brand)}
.rail-status{padding:16px 12px;font-size:12px;color:var(--muted);line-height:1.8}

/* main pane */
.pane{min-width:0}
.pane-head{margin-bottom:6px}
.pane-head .kicker{font:10px/1.5 monospace;letter-spacing:1px;color:var(--muted);text-transform:uppercase}
.pane-head h2{font:500 27px/1.35 var(--serif);letter-spacing:-.5px;margin-top:6px}
.pane-head .sub{font-size:12px;color:var(--muted);margin-top:8px}

/* application logistics strip */
.facts{border:1px solid var(--line);border-radius:8px;background:var(--surface);padding:16px 18px;margin:18px 0 26px}
.facts-label{font-size:9px;letter-spacing:1.6px;color:var(--brand);font-weight:600;text-transform:uppercase;margin-bottom:12px}
.facts-label:before{content:'✳';margin-right:8px}
.facts-strip{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.fchip{font:11px/1.5 monospace;padding:5px 10px;border-radius:5px;background:#fff;border:1px solid var(--line);color:var(--muted);white-space:nowrap;display:inline-flex;gap:6px;align-items:center}
.fchip.plat{color:var(--ink)}
.fchip .k{color:var(--brand);letter-spacing:.5px}
.fchip .d{color:var(--ink);font-variant-numeric:tabular-nums}
.fchip.req{background:#e8f2f0;color:var(--brand);border-color:transparent}
.facts-link{font-size:12px;color:var(--brand);border-bottom:1px solid var(--brand);padding-bottom:1px;margin-left:2px}
.facts-link:hover{color:var(--ember);border-bottom-color:var(--ember)}
.facts-notes{font-size:12px;color:var(--muted);line-height:1.75;margin-top:12px}

/* prompt cards */
.cards{display:flex;flex-direction:column;gap:16px}
.pcard{border:1px solid var(--line);border-radius:9px;background:#fff;padding:22px 24px;transition:box-shadow .2s}
.pcard:hover{box-shadow:0 10px 34px #083d3f0a}
.pcard .p-school{font:10px/1.5 monospace;letter-spacing:.6px;color:var(--muted);text-transform:uppercase;margin-bottom:10px}
.pcard .p-text{font:500 17px/1.6 var(--serif);color:var(--ink);letter-spacing:-.2px}
.chips{display:flex;flex-wrap:wrap;gap:7px;margin-top:16px}
.chip{font:11px/1.4 monospace;padding:4px 9px;border-radius:5px;background:var(--surface);border:1px solid var(--line);color:var(--muted);white-space:nowrap}
.chip.type{color:var(--ink);border-color:#c7d8d6}
.chip.arch{color:var(--brand);border-color:#bcdad6}
.chip.wl{color:var(--ink)}
.chip.ver{background:#e8f2f0;color:var(--brand);border-color:transparent}
.chip.unver{background:#fbefe4;color:var(--ember);border-color:transparent}
.p-source{margin-top:16px}
.p-source a{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--brand);border-bottom:1px solid var(--brand);padding-bottom:1px}
.p-source a:hover{color:var(--ember);border-bottom-color:var(--ember)}

/* expandable sections */
.expand{border-top:1px solid var(--line);margin-top:18px;padding-top:6px}
.expand-h{width:100%;display:flex;align-items:center;gap:9px;border:0;background:none;color:var(--ink);font-size:13px;font-weight:600;padding:10px 0;text-align:left}
.expand-h .chev{color:var(--muted);transition:transform .15s;font-size:11px}
.expand-h[aria-expanded=true] .chev{transform:rotate(90deg);color:var(--brand)}
.expand-h .lead{color:var(--brand);margin-right:2px}
.expand-body{padding:4px 0 12px}
.skel{font-size:12px;color:var(--muted);padding:8px 0}
.mini-empty{font-size:12px;color:var(--muted);padding:8px 0;line-height:1.8}

/* examples */
.ex{border:1px solid var(--line);border-radius:7px;background:var(--surface);padding:15px 16px;margin-top:12px}
.ex:first-child{margin-top:4px}
.ex-top{display:flex;align-items:center;gap:9px;flex-wrap:wrap;margin-bottom:8px}
.ex-title{font-size:13px;font-weight:600;color:var(--ink)}
.ex-wc{margin-left:auto;font:10px/1.5 monospace;color:var(--muted)}
.badge{font:9px/1.4 monospace;letter-spacing:.5px;text-transform:uppercase;padding:4px 8px;border-radius:4px;font-weight:600;white-space:nowrap}
.badge.ai{background:var(--deep);color:#f4f9f8}
.badge.off{background:var(--brand);color:#fff}
.ex-warn{font-size:11px;color:var(--ember);margin:6px 0;display:flex;gap:6px;align-items:flex-start;line-height:1.6}
.ex-body{font:14px/1.75 var(--serif);color:var(--ink);white-space:pre-wrap;margin-top:8px;overflow-wrap:anywhere}
.ex-summary{font-size:12px;color:var(--muted);line-height:1.8;margin-top:6px}
.ex-link{display:inline-flex;align-items:center;gap:5px;font-size:12px;color:var(--brand);border-bottom:1px solid var(--brand);padding-bottom:1px;margin-top:8px}
.ex-link:hover{color:var(--ember);border-bottom-color:var(--ember)}

/* guidance */
.guide{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}
.guide li{border:1px solid var(--line);border-radius:7px;background:var(--surface);padding:12px 14px}
.guide .gt{font-size:13px;font-weight:600;color:var(--ink);margin-bottom:4px}
.guide .gx{font-size:12.5px;color:var(--muted);line-height:1.8}
.guide .gs{font:10px/1.5 monospace;color:var(--muted);margin-top:8px}
.guide .gs a{color:var(--brand);text-decoration:underline}

/* full-pane messages */
.pane-msg{border:1px dashed var(--line);border-radius:9px;padding:44px 26px;text-align:center;background:var(--surface)}
.pane-msg .mk{font-size:30px;color:var(--brand)}
.pane-msg h3{font:500 20px var(--serif);margin:14px 0 8px}
.pane-msg p{font-size:12px;line-height:1.9;color:var(--muted)}
.pane-foot{border-top:1px solid var(--line);margin-top:24px;padding-top:16px;font-size:10px;color:var(--muted);line-height:1.9}

@media(max-width:900px){
  .browser{grid-template-columns:1fr;gap:18px}
  .rail{position:static}
  .rail-list{max-height:320px}
}
@media(max-width:650px){
  .lib-intro{padding-top:24px}
  .lib-search{flex-direction:column}
  .lib-search .button{width:100%}
  .pcard{padding:18px 18px}
  .browser{padding-bottom:56px}
}