:root{
  --bg:#0f1216; --panel:#171b21; --panel2:#1e242c; --line:#2a323c;
  --fg:#e7ecf2; --muted:#95a2b3; --accent:#5b9dff; --ok:#3fbf7f; --err:#ff6b6b; --danger:#e0574f;
  --radius:12px;
}
*{box-sizing:border-box}
html,body{margin:0}
body{background:var(--bg);color:var(--fg);
  font:15px/1.5 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
code{background:var(--panel2);padding:.1em .4em;border-radius:6px;font-size:.9em}

.topbar{display:flex;align-items:center;justify-content:space-between;gap:1rem;position:relative;
  padding:.7rem 1.2rem;background:var(--panel);border-bottom:1px solid var(--line)}
.brand{font-weight:700;font-size:1.05rem;white-space:nowrap;flex:none;
  display:inline-flex;align-items:center;gap:.35rem}
.topbar nav{display:flex;align-items:center;gap:1.1rem}
.inline{display:inline;margin:0}
button.link{background:none;border:0;color:var(--muted);cursor:pointer;font:inherit;padding:0}
button.link:hover{color:var(--fg)}
nav.icons{display:flex;align-items:center;gap:.25rem}
nav.icons .inline{display:contents}
nav.icons a,nav.icons .iconbtn{display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;margin:0;padding:0;border-radius:9px;color:var(--muted);border:0;background:none;
  cursor:pointer;appearance:none;-webkit-appearance:none;line-height:0;box-sizing:border-box}
nav.icons a:hover,nav.icons .iconbtn:hover{background:var(--panel2);color:var(--fg);text-decoration:none}
nav.icons svg{width:22px;height:22px;display:block;flex:0 0 auto}

.wrap{max-width:760px;margin:0 auto;padding:1.6rem 1.2rem}
.stack{display:flex;flex-direction:column;gap:1.1rem}
h1{font-size:1.5rem;margin:.2rem 0}
h2{font-size:1.05rem;margin:0 0 .7rem}
.muted{color:var(--muted)}
.small{font-size:.86rem}

.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:1.3rem}
.card.auth{max-width:380px;margin:3rem auto}
.card.auth h1{text-align:center;margin-bottom:.1rem}
.card.auth p.muted{text-align:center;margin-top:0}

form{display:flex;flex-direction:column;gap:.5rem}
label{font-size:.85rem;color:var(--muted);margin-top:.4rem}
input{background:var(--panel2);border:1px solid var(--line);border-radius:8px;
  color:var(--fg);padding:.6rem .7rem;font:inherit;width:100%}
input:focus{outline:none;border-color:var(--accent)}
button[type=submit]{margin-top:.9rem;background:var(--accent);color:#04101f;border:0;
  border-radius:8px;padding:.65rem 1rem;font-weight:600;cursor:pointer}
button[type=submit]:hover{filter:brightness(1.08)}
button.danger{background:var(--danger);color:#fff}

.ok{background:rgba(63,191,127,.12);border:1px solid rgba(63,191,127,.4);color:var(--ok);
  padding:.6rem .8rem;border-radius:8px;margin:.5rem 0}
.err{background:rgba(255,107,107,.1);border:1px solid rgba(255,107,107,.4);color:var(--err);
  padding:.6rem .8rem;border-radius:8px;margin:.5rem 0}

.qr{background:#fff;padding:12px;border-radius:10px;width:200px;margin:.6rem 0}
.qr svg{width:100%;height:auto;display:block}

.stat-row{display:flex;gap:.8rem;margin:.2rem 0;flex-wrap:wrap}
.stat{background:var(--panel2);border:1px solid var(--line);border-radius:10px;
  padding:.7rem .6rem;text-align:center;flex:1 1 96px;min-width:0;color:var(--fg);overflow:hidden}
.stat b{display:block;font-size:1.5rem;line-height:1.2}
.stat span{display:block;color:var(--muted);font-size:.8rem;line-height:1.2;overflow-wrap:anywhere;hyphens:auto}
@media (max-width:520px){.stat{flex:1 1 28%}}
a.stat:hover{border-color:var(--accent);text-decoration:none}

/* header search (expandable on phones, like story) */
.searchbox{flex:1;max-width:420px;margin:0;position:relative;display:flex;align-items:center}
.searchbox .s-ico{position:absolute;left:8px;top:50%;transform:translateY(-50%);
  width:30px;height:30px;display:inline-flex;align-items:center;justify-content:center;
  border:0;background:none;color:var(--muted);cursor:pointer;padding:0;line-height:0;box-sizing:border-box}
.searchbox .s-ico svg{display:block}
.searchbox .s-ico svg{width:18px;height:18px}
.searchbox input{width:100%;padding:.5rem .7rem .5rem 2.3rem}
@media (max-width:640px){
  /* stack: row 1 = brand + icons; row 2 = full-width search (no collapse/expand) */
  .topbar{flex-wrap:wrap;gap:.55rem .8rem}
  .brand{order:1}
  nav.icons{order:2;margin-left:auto}
  .searchbox{order:3;flex:1 0 100%;max-width:none;width:auto}
  .searchbox input{width:100%;opacity:1;pointer-events:auto;
    padding:.5rem .7rem .5rem 2.3rem;border:1px solid var(--line);background:var(--panel2)}
  .searchbox .s-ico{position:absolute;left:8px;pointer-events:none}
}
.wrap{max-width:1320px}

/* breadcrumbs */
.crumbs{display:flex;flex-wrap:wrap;gap:.35rem;align-items:center;color:var(--muted);font-size:.9rem}
.crumbs span{color:var(--line)}

/* category tiles */
.cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:.7rem}
.cat-tile{display:flex;justify-content:space-between;align-items:center;background:var(--panel2);
  border:1px solid var(--line);border-radius:10px;padding:.8rem 1rem}
.cat-tile:hover{border-color:var(--accent);text-decoration:none}
.cat-tile .cn{font-weight:600}
.cat-tile .cc{color:var(--muted);font-size:.85rem}

/* chips */
.chips{display:flex;flex-wrap:wrap;gap:.45rem}
.chip{background:var(--panel2);border:1px solid var(--line);border-radius:999px;padding:.3rem .7rem;font-size:.85rem}
.chip:hover{border-color:var(--accent);text-decoration:none}
.chip b{color:var(--muted);font-weight:600;margin-left:.2rem}

/* folder list */
.folder-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:.5rem}
.folder{background:var(--panel2);border:1px solid var(--line);border-radius:8px;padding:.6rem .8rem;
  display:flex;justify-content:space-between;gap:.5rem}
.folder:hover{border-color:var(--accent);text-decoration:none}

/* doc grid + cards */
.doc-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:.9rem}
.doc-card{background:var(--panel2);border:1px solid var(--line);border-radius:10px;overflow:hidden;
  display:flex;flex-direction:column}
.doc-card:hover{border-color:var(--accent);text-decoration:none}
.doc-card .thumb{aspect-ratio:3/4;background:#0b0e12;display:flex;align-items:center;justify-content:center;overflow:hidden}
.doc-card .thumb img{width:100%;height:100%;object-fit:cover}
.doc-card .ext,.noprev .ext{font-weight:700;color:var(--muted);font-size:1.1rem;letter-spacing:.05em}
.doc-card .meta{padding:.5rem .6rem}
.doc-card .name{font-size:.85rem;line-height:1.3;max-height:2.6em;overflow:hidden}
.doc-card .sub{margin-top:.35rem;display:flex;flex-wrap:wrap;gap:.25rem;align-items:center}
.badge{font-size:.68rem;padding:.1rem .4rem;border-radius:5px;border:1px solid var(--line)}
.badge.type{background:rgba(91,157,255,.14);border-color:rgba(91,157,255,.4);color:var(--accent)}
.badge.cat{color:var(--muted)}
.date{font-size:.7rem;color:var(--muted)}

/* doc detail */
.doc-view{display:grid;grid-template-columns:1.9fr 1fr;gap:1rem;align-items:start}
@media(max-width:900px){.doc-view{grid-template-columns:1fr}}
.preview{padding:.6rem;position:sticky;top:.8rem}
.preview iframe{width:100%;height:86vh;border:0;border-radius:8px;background:#fff}
.preview img{width:100%;border-radius:8px;display:block}
.textprev{background:#fff;color:#111;border-radius:8px;padding:1rem 1.1rem;margin:0;max-height:86vh;
  overflow:auto;white-space:pre-wrap;word-break:break-word;font:13px/1.5 ui-monospace,monospace}
@media (prefers-color-scheme:dark){.textprev{background:#0c0f13;color:#dfe6ee}}
/* formatted docx/xlsx render */
.doc-render{background:#fff;color:#1a1a1a;border-radius:8px;padding:1.4rem 1.6rem;max-height:86vh;
  overflow:auto;font:15px/1.6 Georgia,"Times New Roman",serif}
.doc-render h1,.doc-render h2,.doc-render h3{font-family:system-ui,sans-serif;margin:.8em 0 .3em}
.doc-render p{margin:.5em 0}.doc-render img{max-width:100%}
.doc-render table{border-collapse:collapse;width:100%;font:13px/1.4 system-ui,sans-serif;margin:.3rem 0 1rem}
.doc-render th,.doc-render td{border:1px solid #d5d9e0;padding:.32rem .5rem;text-align:left;
  vertical-align:top;white-space:nowrap;max-width:320px;overflow:hidden;text-overflow:ellipsis}
.doc-render tr:nth-child(even) td{background:#f6f7f9}
.doc-render .xls-wrap{overflow-x:auto}
.doc-render h3{font-size:.95rem;color:#555;margin:.6rem 0 .2rem}
.noprev{aspect-ratio:1/1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.5rem}
.filebar{display:flex;gap:1rem;align-items:center;padding:.6rem .2rem 0}
.meta-form .row2{display:flex;gap:.6rem}
.meta-form .row2>div{flex:1}
.meta-form .cur{width:70px;margin-top:.3rem}
textarea{background:var(--panel2);border:1px solid var(--line);border-radius:8px;color:var(--fg);
  padding:.6rem .7rem;font:inherit;width:100%}
select{background:var(--panel2);border:1px solid var(--line);border-radius:8px;color:var(--fg);
  padding:.55rem .6rem;font:inherit;width:100%}
.dupes{margin:0;padding-left:1.1rem;line-height:1.8}
.dupes .badge{margin-left:.3rem}
.dup-item{display:flex;align-items:center;gap:.5rem}
.dup-item a{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.dup-item .tobin{font-size:1rem;opacity:.6;padding:.15rem .4rem;border-radius:6px}
.dup-item .tobin:hover{opacity:1;background:rgba(224,87,79,.15);color:var(--danger)}

/* DICOM viewer */
.dicom-viewer{display:flex;flex-direction:column;gap:.5rem}
.dcm-loading{padding:2rem;text-align:center}
.dcm-study{font-size:.85rem;color:var(--muted)}
.dcm-series{display:flex;gap:.35rem;overflow-x:auto;padding-bottom:.2rem}
.dcm-tab{white-space:nowrap;background:var(--panel2);border:1px solid var(--line);color:var(--muted);
  border-radius:8px;padding:.35rem .6rem;font-size:.8rem;cursor:pointer}
.dcm-tab.on{border-color:var(--accent);color:var(--fg);background:rgba(91,157,255,.12)}
.dcm-stage{position:relative;background:#000;border-radius:8px;height:74vh;overflow:hidden;
  display:flex;align-items:center;justify-content:center;touch-action:none}
.dcm-img{max-width:100%;max-height:100%;user-select:none}
.dcm-hud{position:absolute;top:8px;right:12px;color:#fff;background:rgba(0,0,0,.55);
  padding:.15rem .5rem;border-radius:6px;font-size:.8rem;font-variant-numeric:tabular-nums}
.dcm-help{position:absolute;bottom:8px;left:12px;right:12px;color:rgba(255,255,255,.5);
  font-size:.72rem;text-align:center;pointer-events:none}
.dcm-ctrl{display:flex;align-items:center;gap:.5rem}
.dcm-range{flex:1}
.dcm-z{width:34px;height:34px;border-radius:8px;border:1px solid var(--line);background:var(--panel2);
  color:var(--fg);cursor:pointer;font-size:1rem}
.dcm-z:hover{border-color:var(--accent)}

/* file-op toolbar + menus */
.toolbar{display:flex;gap:.7rem;flex-wrap:wrap}
.tool{flex-direction:row;gap:.4rem;align-items:center;background:var(--panel);border:1px solid var(--line);
  border-radius:10px;padding:.5rem .6rem}
.tool input[type=text],.tool input:not([type]){width:180px}
.tool button,.menu-pop button,.ops-row button{margin-top:0;padding:.45rem .7rem;font-size:.85rem}
.folder{align-items:center}
.card-wrap{position:relative}
.menu{position:relative}
.menu>summary{list-style:none;cursor:pointer;color:var(--muted);padding:.1rem .4rem;border-radius:6px}
.menu>summary::-webkit-details-marker{display:none}
.menu>summary:hover{background:var(--panel2);color:var(--fg)}
.card-wrap .menu{position:absolute;top:.3rem;right:.3rem;background:rgba(15,18,22,.7);border-radius:6px}
.menu-pop{position:absolute;right:0;z-index:20;background:var(--panel);border:1px solid var(--line);
  border-radius:10px;padding:.6rem;display:flex;flex-direction:column;gap:.5rem;min-width:240px;
  box-shadow:0 8px 30px rgba(0,0,0,.5)}
.menu-pop form,.ops-row form{flex-direction:row;gap:.35rem;align-items:center;margin:0}
.menu-pop input,.menu-pop select{width:100%}
.ops-row{display:flex;flex-wrap:wrap;gap:.6rem;align-items:center}
.ops-row form{background:var(--panel2);border:1px solid var(--line);border-radius:8px;padding:.4rem .5rem}
.trash-row{display:flex;justify-content:space-between;align-items:center;gap:1rem}
.trash-row form{margin:0}
.row-between{display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap}
.dcm-loading.err{color:var(--err)}
.audio-prev{padding:3rem 1.2rem;text-align:center}
.audio-prev .ext{font-size:1.4rem;color:var(--muted);letter-spacing:.05em}
.audio-prev audio{width:100%;margin-top:1.2rem}
.local-flag{margin:.4rem 0}
.badge.lock{background:rgba(224,87,79,.15);border-color:rgba(224,87,79,.4);color:var(--danger)}