:root{--da-navy:#0f3d5e;--da-navy-2:#0b2e47;--da-accent:#1fa2a6;--da-bg:#f4f6f9;--da-sidebar-w:250px}
body{background:var(--da-bg);font-size:.925rem}
.da-shell{display:flex;min-height:100vh}
.da-sidebar{width:var(--da-sidebar-w);background:linear-gradient(180deg,var(--da-navy),var(--da-navy-2));color:#cfe0ee;position:fixed;top:0;bottom:0;left:0;overflow-y:auto;z-index:1040;display:flex;flex-direction:column;transition:transform .2s}
.da-brand{display:flex;align-items:center;gap:.6rem;padding:1rem 1.2rem .4rem;color:#fff;text-decoration:none;font-weight:700;font-size:1.15rem}
.da-brand i{color:var(--da-accent);font-size:1.4rem}
.da-org{padding:0 1.2rem .8rem;color:#9fbcd3;border-bottom:1px solid rgba(255,255,255,.08)}
.da-nav{padding:.5rem 0;flex:1 0 auto}
.da-brand,.da-org,.da-ver{flex-shrink:0}
.da-nav a{display:flex;align-items:center;gap:.7rem;padding:.48rem 1.2rem;color:#cfe0ee;text-decoration:none;border-left:3px solid transparent}
.da-nav a:hover{background:rgba(255,255,255,.06);color:#fff}
.da-nav a.active{background:rgba(31,162,166,.18);color:#fff;border-left-color:var(--da-accent)}
.da-nav a i{width:1.1rem;text-align:center}
.da-nav-h{padding:.9rem 1.2rem .3rem;font-size:.7rem;text-transform:uppercase;letter-spacing:.08em;color:#7fa0bb}
.da-ver{padding:.7rem 1.2rem;color:#7fa0bb;border-top:1px solid rgba(255,255,255,.08)}
.da-main{flex:1;margin-left:var(--da-sidebar-w);min-width:0}
.da-top{position:sticky;top:0;z-index:1030;background:#fff;border-bottom:1px solid #e5e9ef;display:flex;align-items:center;padding:.55rem 1.2rem;gap:.75rem}
.da-search{position:relative;flex:1;max-width:620px}
.da-search i{position:absolute;left:.75rem;top:50%;transform:translateY(-50%);color:#8a96a3}
.da-search input{padding-left:2.2rem;background:#f4f6f9;border-color:#e5e9ef}
.da-content{padding:1.25rem}
.da-notes{width:340px;max-height:420px;overflow:auto}
@media(max-width:991.98px){.da-sidebar{transform:translateX(-100%)}.da-sidebar.open{transform:none;box-shadow:0 0 40px rgba(0,0,0,.35)}.da-main{margin-left:0}}
.card{border:1px solid #e5e9ef;box-shadow:0 1px 2px rgba(16,24,40,.04)}
.card-header{background:#fff;font-weight:600}
.stat{border-radius:.6rem;padding:1rem 1.1rem;background:#fff;border:1px solid #e5e9ef;height:100%}
.stat .v{font-size:1.55rem;font-weight:700;line-height:1.2}
.stat .l{color:#6b7785;font-size:.8rem;text-transform:uppercase;letter-spacing:.04em}
.stat i{font-size:1.4rem;opacity:.85}
.table>:not(caption)>*>*{padding:.55rem .65rem}
.table thead th{font-size:.75rem;text-transform:uppercase;letter-spacing:.04em;color:#6b7785;background:#f8fafc}
.doc-icon{width:34px;height:34px;border-radius:8px;display:inline-flex;align-items:center;justify-content:center;background:#e8f1f8;color:var(--da-navy);font-size:1.05rem;flex-shrink:0}
.doc-icon.pdf{background:#fde8e8;color:#c0392b}.doc-icon.img{background:#e6f6ee;color:#1e8449}.doc-icon.office{background:#e8eefc;color:#2c5cc5}
mark{background:#fff3a3;padding:0 .1em}
.result{padding:.9rem 1rem;border-bottom:1px solid #eef1f5}
.result:last-child{border-bottom:0}
.result h6 a{text-decoration:none}
.snippet{color:#4b5563;font-size:.86rem}
.dropzone{border:2px dashed #b8c6d4;border-radius:.75rem;background:#fff;padding:2.2rem 1rem;text-align:center;cursor:pointer;transition:.15s}
.dropzone.drag{border-color:var(--da-accent);background:#eefafa}
.file-row{display:flex;align-items:center;gap:.6rem;padding:.45rem .6rem;border-bottom:1px solid #f0f2f5;font-size:.86rem}
/* Viewer */
.viewer{display:grid;grid-template-columns:150px 1fr 360px;gap:0;height:calc(100vh - 190px);min-height:520px;background:#fff;border:1px solid #e5e9ef;border-radius:.5rem;overflow:hidden}
.viewer .thumbs{overflow-y:auto;background:#f6f8fa;border-right:1px solid #e5e9ef;padding:.5rem}
.viewer .thumbs .th{display:block;margin-bottom:.6rem;text-align:center;cursor:pointer;border:2px solid transparent;border-radius:4px;padding:2px;background:#fff}
.viewer .thumbs .th.active{border-color:var(--da-accent)}
.viewer .thumbs .th img,.viewer .thumbs .th canvas{max-width:100%;display:block;margin:auto;box-shadow:0 1px 3px rgba(0,0,0,.15)}
.viewer .thumbs .th small{color:#6b7785}
.viewer .stage{display:flex;flex-direction:column;min-width:0;background:#525659}
.viewer .toolbar{display:flex;gap:.35rem;align-items:center;padding:.4rem .6rem;background:#323639;color:#fff;flex-wrap:wrap}
.viewer .toolbar .btn{color:#fff;border-color:#555}
.viewer .toolbar input{max-width:62px}
.viewer .canvas-wrap{flex:1;overflow:auto;text-align:center;padding:1rem}
.viewer .page-box{position:relative;display:inline-block;background:#fff;box-shadow:0 2px 10px rgba(0,0,0,.4)}
.viewer .page-box canvas,.viewer .page-box img{display:block}
.viewer .hl{position:absolute;background:rgba(255,213,0,.45);border:1px solid rgba(230,160,0,.9);pointer-events:none;border-radius:2px}
.viewer .hl.focus{background:rgba(31,162,166,.45);border-color:#117a7d}
.viewer .info{overflow-y:auto;border-left:1px solid #e5e9ef}
.viewer .info .nav-tabs{position:sticky;top:0;background:#fff;z-index:2;font-size:.8rem;flex-wrap:nowrap;overflow-x:auto}
.viewer .info .nav-link{padding:.45rem .6rem;white-space:nowrap}
.kv{display:grid;grid-template-columns:120px 1fr;gap:.25rem .5rem;font-size:.85rem}
.kv dt{color:#6b7785;font-weight:500}
.kv dd{margin:0;word-break:break-word}
.ocr-words span{cursor:pointer;border-radius:2px}
.ocr-words span:hover{background:#e0f2f2}
.ocr-words span.low{color:#b45309;text-decoration:underline dotted}
.timeline{border-left:2px solid #dbe3ea;margin-left:.4rem;padding-left:1rem}
.timeline .ev{position:relative;margin-bottom:.8rem;font-size:.84rem}
.timeline .ev:before{content:"";position:absolute;left:-1.42rem;top:.3rem;width:10px;height:10px;border-radius:50%;background:var(--da-accent);border:2px solid #fff}
@media(max-width:1199.98px){.viewer{grid-template-columns:110px 1fr;height:auto}.viewer .info{grid-column:1/-1;border-left:0;border-top:1px solid #e5e9ef;max-height:none}.viewer .stage{min-height:70vh}}
@media(max-width:575.98px){.viewer{grid-template-columns:1fr}.viewer .thumbs{display:none}}
.tag-chip{display:inline-flex;align-items:center;gap:.25rem;padding:.12rem .55rem;border-radius:999px;font-size:.75rem;color:#fff;margin:0 .2rem .2rem 0;text-decoration:none}
.folder-tree{list-style:none;padding-left:0;margin:0}
.folder-tree ul{list-style:none;padding-left:1.1rem;margin:0}
.folder-tree a{display:flex;align-items:center;gap:.4rem;padding:.25rem .4rem;border-radius:4px;text-decoration:none;color:#1f2937;font-size:.88rem}
.folder-tree a:hover{background:#eef3f8}.folder-tree a.active{background:#dff1f1;color:#0b5f62;font-weight:600}
.da-auth{background:linear-gradient(135deg,var(--da-navy),#145a7e 60%,var(--da-accent));min-height:100vh;display:flex;align-items:center;justify-content:center;padding:1rem}
.da-auth-card{background:#fff;border-radius:1rem;padding:2rem;width:100%;max-width:420px;box-shadow:0 20px 60px rgba(0,0,0,.25)}
.da-auth-logo{width:56px;height:56px;border-radius:14px;background:var(--da-navy);color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:1.6rem}
.progress-thin{height:6px}
.perm-grid label{font-size:.85rem}
.small-muted{font-size:.8rem;color:#6b7785}
.cursor-pointer{cursor:pointer}