:root{--blue:#0f69b4;--deep:#0b4e85;--teal:#0096a9;--orange:#ee7815;--ink:#28343a;--muted:#657178;--bg:#f7f7f6;--panel:#fff;--line:#dce3e6;--shadow:0 10px 30px rgba(30,57,70,.1);font-family:"Avenir Next","Segoe UI",Arial,sans-serif;color:var(--ink);background:var(--bg)}*{box-sizing:border-box}body{margin:0;background:linear-gradient(#e9f3f8,var(--bg) 320px)}button,input,select{font:inherit}button{min-height:44px;padding:0 20px;border:0;border-radius:6px;background:var(--blue);color:#fff;font-weight:750;cursor:pointer}button:hover{background:var(--deep)}button.secondary{background:#fff;color:var(--deep);border:1px solid #bfcbd0}:focus-visible{outline:3px solid rgba(238,120,21,.55);outline-offset:2px}.hidden{display:none!important}.topbar{position:sticky;top:0;z-index:5;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:12px clamp(16px,4vw,52px);background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);box-shadow:0 3px 15px rgba(30,57,70,.06)}.brand{display:flex;align-items:center;gap:12px}.brand>span{display:grid;place-items:center;width:44px;height:44px;border-radius:6px;background:linear-gradient(135deg,var(--deep),var(--blue));color:#fff;font:800 17px Georgia}.brand h1,.brand p{margin:0}.brand h1{font:700 24px Georgia}.brand p{font-size:12px;color:var(--muted)}nav{display:flex;align-items:center;gap:10px}main{width:min(1500px,100%);margin:auto;padding:26px clamp(14px,4vw,48px) 50px}.login-view{min-height:72vh;display:grid;place-items:center}.login-card{width:min(620px,100%);padding:34px;background:#fff;border-top:5px solid var(--orange);border-radius:12px;box-shadow:var(--shadow)}h2,h3,p{margin-top:0}h2{font:700 clamp(25px,3vw,36px) Georgia}.eyebrow{font-size:11px;font-weight:850;letter-spacing:.13em;text-transform:uppercase;color:var(--teal)}label{font-weight:700}.row,.search-row{display:grid;grid-template-columns:1fr auto;gap:10px;margin:8px 0 12px}input,select{min-height:44px;min-width:0;padding:0 13px;border:1px solid #bfcbd0;border-radius:6px;background:#fff;color:var(--ink)}.status{min-height:24px;color:var(--deep)}details{margin-top:18px;padding-top:16px;border-top:1px solid var(--line)}summary{cursor:pointer;color:var(--deep);font-weight:700}.hero{display:flex;justify-content:space-between;gap:20px;padding:28px 32px;border-radius:12px;background:linear-gradient(120deg,var(--deep),var(--blue) 70%,var(--teal));color:#fff;box-shadow:var(--shadow)}.hero .eyebrow{color:#fff}.hero h2{margin:5px 0 8px}.hero p{margin:0;color:#eaf6fb}.badge{align-self:start;padding:8px 12px;border:1px solid #ffffff88;border-radius:999px;font-size:12px;font-weight:800}.search-panel{margin:20px 0;padding:22px 24px;background:#fff;border-top:4px solid var(--orange);border-radius:10px;box-shadow:var(--shadow)}.search-panel>label{display:block}.search-panel fieldset{display:flex;gap:22px;padding:0;border:0}.search-panel fieldset label{font-weight:600}.search-panel>p{margin:12px 0 0;color:var(--muted);font-size:12px}.workspace{display:grid;grid-template-columns:minmax(330px,.78fr) minmax(500px,1.22fr);gap:20px;min-height:620px}.results-pane,.detail,.related,.admin-view{background:#fff;border:1px solid var(--line);border-radius:10px;box-shadow:var(--shadow);overflow:hidden}.pane-head{display:flex;justify-content:space-between;gap:12px;padding:18px 20px;background:#f8fafb;border-bottom:1px solid var(--line)}.pane-head h3,.pane-head p{margin:0}.pane-head p{font-size:12px;color:var(--muted)}.pane-head label{display:grid;gap:4px;font-size:11px}.pane-head select{min-height:34px}.results{max-height:720px;overflow:auto}.result{width:100%;height:auto;display:grid;gap:5px;padding:16px 20px;text-align:left;border:0;border-bottom:1px solid var(--line);border-radius:0;background:#fff;color:var(--ink);box-shadow:none}.result:hover,.result.selected{background:#edf7fa;box-shadow:inset 4px 0 var(--teal)}.result strong{line-height:1.35}.meta{font-size:12px;color:var(--deep)}.snippet{font-size:13px;color:var(--muted);font-weight:400;line-height:1.4}.recent{display:flex;gap:6px;flex-wrap:wrap;padding:9px 16px;border-bottom:1px solid var(--line)}.recent button{min-height:28px;padding:3px 9px;border-radius:999px;background:#e9f3f8;color:var(--deep);font-size:11px}.detail-pane{display:grid;grid-template-columns:1fr;gap:16px;min-width:0}.detail{min-height:420px}.empty,.loading,.error{min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;padding:28px;text-align:center;color:var(--muted)}.doc-head{display:grid;grid-template-columns:92px 1fr auto;gap:16px;align-items:start;padding:22px 26px;background:#f8fafb;border-bottom:1px solid var(--line)}.doc-head img{width:92px;max-height:120px;object-fit:contain;border:1px solid var(--line)}.doc-head h3{margin:4px 0;font:700 24px Georgia}.tags{display:flex;gap:5px;flex-wrap:wrap}.tags span{padding:4px 7px;background:#e9f3f8;color:var(--deep);border-radius:4px;font-size:11px}.doc-text{max-height:470px;overflow:auto;padding:26px;white-space:pre-wrap;font:15px/1.65 Georgia,serif}.related{padding:18px}.related>p{color:var(--muted);font-size:12px}.related .result{padding:12px}.admin-view{padding:28px}.admin-head{display:flex;justify-content:space-between;gap:20px}.user-form{display:grid;grid-template-columns:1fr 180px auto;gap:10px;align-items:end;padding:18px 0}.user-form label{display:none}.user-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px;border-top:1px solid var(--line)}dialog{width:min(1200px,96vw);height:min(900px,94vh);padding:0;border:0;border-radius:10px;box-shadow:0 20px 80px #102a3acc}dialog::backdrop{background:#102a3ab8}.dialog-head{height:76px;display:flex;align-items:center;justify-content:space-between;padding:12px 20px;border-bottom:1px solid var(--line)}.dialog-head h2{margin:2px 0;font-size:19px}#pdfFrame{width:100%;height:calc(100% - 76px);border:0}.pdf-loading{position:absolute;inset:76px 0 0;display:grid;place-items:center;background:#f4f6f7;color:var(--muted)}
@media(max-width:900px){.workspace{grid-template-columns:1fr}.results{max-height:430px}.topbar{position:static}.doc-head{grid-template-columns:70px 1fr}.doc-head>button{grid-column:1/-1}.user-form{grid-template-columns:1fr}}
@media(max-width:560px){main{padding-inline:10px}.topbar{align-items:flex-start;flex-wrap:wrap;padding-inline:14px}.topbar nav{width:100%;flex-wrap:wrap}.row,.search-row{grid-template-columns:1fr}.hero{display:grid;padding:22px}.search-panel{padding:18px}.search-panel fieldset{display:grid;gap:10px}.pane-head{display:grid}.doc-head{grid-template-columns:1fr}.doc-head img{display:none}.admin-head{display:grid}.user-row{align-items:flex-start;flex-direction:column}dialog{width:100vw;height:100vh;max-width:none;max-height:none;border-radius:0}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation:none!important}}

/* Explorador documental de tres paneles */
.workspace{grid-template-columns:220px minmax(340px,430px) minmax(520px,1fr);gap:0;min-height:720px;border:1px solid var(--line);border-radius:10px;background:#fff;box-shadow:var(--shadow);overflow:hidden}
.source-pane{min-width:0;background:#f2f5f6;border-right:1px solid var(--line)}
.source-title,.source-section{padding:16px 16px 8px;color:var(--muted);font-size:11px;font-weight:850;letter-spacing:.1em;text-transform:uppercase}
.source-section{padding-top:22px}
.source-item{width:100%;height:auto;min-height:52px;display:grid;grid-template-columns:24px 1fr;gap:8px;align-items:center;padding:9px 14px;border-radius:0;background:transparent;color:var(--ink);text-align:left;font-weight:600}
.source-item:hover,.source-item.active{background:#dcebf1;color:var(--deep)}
.source-item>span:last-child{display:grid;gap:2px}.source-item small{color:var(--muted);font-size:10px;font-weight:500}
.source-pane .recent{display:grid;gap:2px;padding:4px 8px;border:0}.source-pane .recent button{width:100%;min-height:34px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;text-align:left;border-radius:4px;background:transparent}
.source-pane .recent button:hover{background:#dcebf1}
.results-pane,.detail,.related{border:0;border-radius:0;box-shadow:none}
.results-pane{min-width:0;border-right:1px solid var(--line)}
.file-columns{display:grid;grid-template-columns:1fr 100px;gap:10px;padding:7px 16px;border-bottom:1px solid var(--line);background:#f3f5f6;color:var(--muted);font-size:10px;font-weight:800;text-transform:uppercase}
.results{height:650px;max-height:none}.result{padding:13px 16px}.result .snippet{display:-webkit-box;overflow:hidden;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.detail-pane{display:grid;grid-template-rows:minmax(520px,1fr) auto;gap:0;min-width:0;background:#e9edef}
.detail{min-height:620px;background:#fff}.viewer-empty{min-height:620px;display:grid;place-content:center;gap:7px;text-align:center;color:var(--muted)}
.doc-head{grid-template-columns:auto 1fr;gap:12px;padding:12px 16px}.doc-head img{width:48px;max-height:58px}.doc-head h3{margin:2px 0;font:700 17px Georgia}.doc-head .meta{margin-bottom:4px}
.inline-pdf{display:block;width:100%;height:610px;border:0;background:#525659}.doc-text{height:610px;max-height:none;overflow:auto}
.related{max-height:220px;overflow:auto;padding:14px 16px;border-top:1px solid var(--line);background:#fff}.related h3{margin-bottom:4px;font-size:15px}.related>p{margin-bottom:8px}

@media(max-width:1100px){.workspace{grid-template-columns:180px minmax(310px,38%) 1fr}.inline-pdf,.doc-text{height:560px}}
@media(max-width:900px){.workspace{grid-template-columns:190px 1fr}.detail-pane{grid-column:1/-1;border-top:1px solid var(--line)}.results{height:430px}.detail,.viewer-empty{min-height:560px}.inline-pdf,.doc-text{height:540px}}
@media(max-width:560px){.workspace{grid-template-columns:1fr}.source-pane{border-right:0;border-bottom:1px solid var(--line)}.source-pane .source-item{display:inline-grid;width:50%;vertical-align:top}.source-title,.source-section{padding-top:12px}.results-pane{border-right:0}.results{height:360px}.detail,.viewer-empty{min-height:500px}.inline-pdf,.doc-text{height:480px}.file-columns{grid-template-columns:1fr 80px}}