:root{
  --bg:#f4f2ee; --panel:#ffffff; --ink:#1f2733; --ink-soft:#5b6572; --ink-faint:#8b94a1;
  --accent:#8a3033; --accent-soft:#f3e2e2; --gold:#a07d3b; --gold-soft:#f5eddd;
  --line:#e3ded6; --ok:#2e7d51; --ok-soft:#e2f0e8; --warn:#a8681c; --warn-soft:#f7ecdc;
  --blue:#2f5d8a; --blue-soft:#e4edf5;
  --radius:10px; --shadow:0 1px 3px rgba(31,39,51,.08),0 4px 14px rgba(31,39,51,.06);
  --sans:'Segoe UI',system-ui,-apple-system,'Helvetica Neue',Arial,sans-serif;
  --serif:Georgia,'Times New Roman',serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{font-family:var(--sans);background:var(--bg);color:var(--ink);font-size:15px;overflow:hidden}
button{font-family:inherit;cursor:pointer}
input,select,textarea{font-family:inherit;font-size:14px}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-thumb{background:#cfc9bf;border-radius:6px;border:2px solid var(--bg)}
::-webkit-scrollbar-track{background:transparent}

/* ---------- Layout ---------- */
#app{display:flex;height:100vh}
#sidebar{width:300px;min-width:300px;background:#232a35;color:#e8e4dc;display:flex;flex-direction:column}
#main{flex:1;display:flex;flex-direction:column;min-width:0}

/* ---------- Sidebar ---------- */
.brand{padding:18px 18px 14px;border-bottom:1px solid #333c49}
.brand h1{font-family:var(--serif);font-size:21px;letter-spacing:.4px;color:#f3efe7}
.brand h1 .amp{color:#c9a15d}
.brand .tag{font-size:11.5px;color:#98a0ac;margin-top:3px;letter-spacing:.2px}
.side-section{padding:14px 14px 6px;font-size:11px;text-transform:uppercase;letter-spacing:1.2px;color:#87919e;display:flex;justify-content:space-between;align-items:center}
.side-section button{background:none;border:1px solid #46505e;color:#c8cdd6;border-radius:6px;font-size:11px;padding:3px 9px}
.side-section button:hover{background:#333c49}
#caseList{overflow-y:auto;padding:4px 10px 10px}
.case-item{padding:10px 12px;border-radius:8px;cursor:pointer;margin-bottom:4px;border:1px solid transparent}
.case-item:hover{background:#2c3542}
.case-item.active{background:#39424f;border-color:#4b5666}
.case-item .cname{font-size:14px;font-weight:600;color:#f0ece4;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.case-item .cmeta{font-size:11.5px;color:#96a0ad;margin-top:2px}
#docListWrap{flex:1;display:flex;flex-direction:column;min-height:0;border-top:1px solid #333c49}
#docList{overflow-y:auto;padding:4px 10px 12px;flex:1}
.doc-item{padding:8px 10px;border-radius:7px;cursor:pointer;margin-bottom:3px;display:flex;gap:8px;align-items:flex-start}
.doc-item:hover{background:#2c3542}
.doc-item.active{background:#39424f}
.doc-item .dicon{font-size:15px;line-height:1.3;flex:none}
.doc-item .dname{font-size:12.5px;color:#dfe3ea;line-height:1.35;word-break:break-word}
.doc-item .dstate{font-size:10.5px;color:#8b95a3;margin-top:1px}
.doc-item .dstate.ready{color:#7dbb96}
.doc-item .dstate.working{color:#d9b36a}
.doc-item .dstate.error{color:#e08a8a}
.side-foot{padding:10px 14px;border-top:1px solid #333c49;display:flex;gap:8px}
.side-foot button{flex:1;background:#2c3542;color:#cdd3dc;border:1px solid #414b5a;border-radius:7px;padding:7px 6px;font-size:12px}
.side-foot button:hover{background:#39424f}

/* ---------- Topbar ---------- */
#topbar{background:var(--panel);border-bottom:1px solid var(--line);padding:0 22px;display:flex;align-items:center;gap:4px;min-height:54px}
#caseTitle{font-family:var(--serif);font-size:18px;margin-right:auto;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
#caseTitle small{font-family:var(--sans);font-size:12px;color:var(--ink-faint);margin-left:10px}
.tab{border:none;background:none;padding:16px 14px;font-size:14px;color:var(--ink-soft);border-bottom:2.5px solid transparent;font-weight:500}
.tab:hover{color:var(--ink)}
.tab.active{color:var(--accent);border-bottom-color:var(--accent);font-weight:600}

/* ---------- Panels ---------- */
#panels{flex:1;overflow:hidden;position:relative}
.panel{position:absolute;inset:0;overflow-y:auto;padding:24px 28px;display:none}
.panel.active{display:block}
.panel-inner{max-width:980px;margin:0 auto}

/* ---------- Cards & general ---------- */
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px 22px;margin-bottom:16px}
.card h3{font-family:var(--serif);font-size:17px;margin-bottom:10px}
.muted{color:var(--ink-soft);font-size:13.5px;line-height:1.55}
.btn{background:var(--accent);color:#fff;border:none;border-radius:8px;padding:9px 16px;font-size:13.5px;font-weight:600;letter-spacing:.2px}
.btn:hover{background:#722a2d}
.btn.secondary{background:#fff;color:var(--ink);border:1px solid var(--line)}
.btn.secondary:hover{background:#f6f4f0}
.btn.small{padding:5px 11px;font-size:12.5px;font-weight:500}
.btn:disabled{opacity:.5;cursor:default}
.btn-row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.pill{display:inline-block;font-size:11px;padding:2.5px 9px;border-radius:20px;font-weight:600;letter-spacing:.3px}
.pill.gold{background:var(--gold-soft);color:var(--gold)}
.pill.red{background:var(--accent-soft);color:var(--accent)}
.pill.green{background:var(--ok-soft);color:var(--ok)}
.pill.blue{background:var(--blue-soft);color:var(--blue)}
.spin{display:inline-block;width:14px;height:14px;border:2px solid rgba(0,0,0,.15);border-top-color:var(--accent);border-radius:50%;animation:sp 0.8s linear infinite;vertical-align:-2px}
@keyframes sp{to{transform:rotate(360deg)}}
.empty{color:var(--ink-faint);text-align:center;padding:60px 20px;font-size:14px;line-height:1.7}
.empty .big{font-size:34px;display:block;margin-bottom:10px}

/* ---------- Upload zone ---------- */
#dropzone{border:2px dashed #cfc7b8;border-radius:var(--radius);padding:26px;text-align:center;color:var(--ink-soft);background:#fbfaf7;transition:all .15s;font-size:14px;line-height:1.6}
#dropzone.drag{border-color:var(--accent);background:var(--accent-soft)}
#dropzone b{color:var(--ink)}

/* ---------- Doc viewer / prose ---------- */
.prose{font-size:14.5px;line-height:1.7;color:#2a3340}
.prose h1,.prose h2,.prose h3,.prose h4{font-family:var(--serif);margin:18px 0 8px;line-height:1.35}
.prose h1{font-size:19px}.prose h2{font-size:17px}.prose h3{font-size:15.5px}.prose h4{font-size:14.5px}
.prose p{margin:8px 0}
.prose ul,.prose ol{margin:8px 0 8px 22px}
.prose li{margin:4px 0}
.prose strong{color:var(--ink)}
.prose table{border-collapse:collapse;margin:10px 0;width:100%;font-size:13px}
.prose th,.prose td{border:1px solid var(--line);padding:6px 9px;text-align:left;vertical-align:top}
.prose th{background:#f6f4ef;font-weight:600}
.prose blockquote{border-left:3px solid var(--gold);padding:4px 14px;margin:10px 0;color:var(--ink-soft);background:var(--gold-soft);border-radius:0 6px 6px 0}
.prose code{background:#f1eee8;padding:1px 5px;border-radius:4px;font-size:12.5px}
.rawtext{white-space:pre-wrap;font-size:13px;line-height:1.65;color:#39424e;font-family:var(--sans)}

/* ---------- Chat ---------- */
#chatPanel{display:none;flex-direction:column;padding:0}
#chatPanel.active{display:flex}
#chatScroll{flex:1;overflow-y:auto;padding:24px 28px 12px}
#chatThread{max-width:860px;margin:0 auto}
.msg{margin-bottom:16px;display:flex;gap:12px}
.msg .avatar{flex:none;width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700}
.msg.user .avatar{background:#39424f;color:#fff}
.msg.ai .avatar{background:var(--accent);color:#fff}
.msg .bubble{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:12px 16px;box-shadow:var(--shadow);max-width:calc(100% - 50px)}
.msg.user .bubble{background:#eef0f3}
.msg .who{font-size:11px;color:var(--ink-faint);margin-bottom:4px;font-weight:600;letter-spacing:.4px;text-transform:uppercase}
#chatBar{border-top:1px solid var(--line);background:var(--panel);padding:14px 28px 16px}
#chatBarInner{max-width:860px;margin:0 auto;display:flex;gap:10px;align-items:flex-end}
#chatInput{flex:1;border:1px solid var(--line);border-radius:10px;padding:11px 14px;font-size:14px;resize:none;max-height:140px;line-height:1.5;background:#fbfaf8}
#chatInput:focus{outline:none;border-color:var(--accent)}
.chat-hint{max-width:860px;margin:8px auto 0;font-size:11.5px;color:var(--ink-faint);text-align:center}

/* ---------- Search ---------- */
#searchBox{width:100%;border:1px solid var(--line);border-radius:10px;padding:12px 16px;font-size:15px;background:var(--panel);box-shadow:var(--shadow)}
#searchBox:focus{outline:none;border-color:var(--accent)}
.hit{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:14px 18px;margin-bottom:10px;cursor:pointer;box-shadow:var(--shadow)}
.hit:hover{border-color:#c9a15d}
.hit .hdoc{font-weight:600;font-size:13.5px;color:var(--blue)}
.hit .hpage{font-size:11.5px;color:var(--ink-faint);margin-left:8px}
.hit .hsnip{font-size:13px;color:var(--ink-soft);margin-top:6px;line-height:1.6}
.hit mark{background:#f8e3a3;border-radius:3px;padding:0 2px}

/* ---------- TTS bar ---------- */
#ttsBar{display:none;position:fixed;bottom:18px;left:50%;transform:translateX(-50%);background:#232a35;color:#eee;border-radius:40px;padding:10px 20px;box-shadow:0 6px 24px rgba(0,0,0,.35);z-index:600;align-items:center;gap:12px}
#ttsBar.on{display:flex}
#ttsBar button{background:none;border:none;color:#fff;font-size:17px;padding:2px 4px}
#ttsBar button:hover{color:#c9a15d}
#ttsBar .tlabel{font-size:12px;color:#aab2bd;max-width:260px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
#ttsBar select{background:#39424f;color:#eee;border:none;border-radius:6px;padding:3px 6px;font-size:12px}

/* ---------- Modals ---------- */
.overlay{position:fixed;inset:0;background:rgba(24,28,35,.55);display:none;align-items:center;justify-content:center;z-index:900;padding:20px}
.overlay.on{display:flex}
.modal{background:var(--panel);border-radius:14px;max-width:640px;width:100%;max-height:88vh;overflow-y:auto;padding:28px 30px;box-shadow:0 20px 60px rgba(0,0,0,.3)}
.modal h2{font-family:var(--serif);font-size:21px;margin-bottom:6px}
.modal h4{font-size:14px;margin:16px 0 6px}
.modal .field{margin:14px 0}
.modal label{display:block;font-size:12.5px;font-weight:600;color:var(--ink-soft);margin-bottom:5px}
.modal input[type=text],.modal input[type=password],.modal input[type=date],.modal select{width:100%;border:1px solid var(--line);border-radius:8px;padding:9px 12px;font-size:14px}
.modal input:focus,.modal select:focus{outline:none;border-color:var(--accent)}
.note{font-size:12.5px;color:var(--ink-soft);background:#f6f4ef;border:1px solid var(--line);border-radius:8px;padding:10px 13px;line-height:1.55;margin:10px 0}
.note.warn{background:var(--warn-soft);border-color:#e8d3b0;color:#7a5216}
.steps{margin:10px 0 4px 4px}
.steps li{margin:7px 0 7px 16px;font-size:13.5px;line-height:1.55}
.disclaimer{font-size:11.5px;color:var(--ink-faint);line-height:1.55;border-top:1px solid var(--line);margin-top:16px;padding-top:12px}

/* ---------- Toast ---------- */
#toast{position:fixed;top:16px;left:50%;transform:translateX(-50%);background:#232a35;color:#fff;padding:10px 20px;border-radius:8px;font-size:13.5px;z-index:1000;display:none;box-shadow:0 6px 20px rgba(0,0,0,.3);max-width:80vw}
#toast.on{display:block}
#toast.err{background:#8a3033}

/* ---------- Progress line ---------- */
.progline{font-size:12.5px;color:var(--ink-soft);background:var(--blue-soft);border:1px solid #cdddeb;border-radius:8px;padding:8px 12px;margin-top:10px;display:flex;align-items:center;gap:8px}

/* ---------- Case header & doc table ---------- */
.case-head{background:linear-gradient(135deg,#2b333f,#39424f);color:#eef0f4;border-radius:var(--radius);padding:18px 22px;margin-bottom:16px;box-shadow:var(--shadow)}
.case-head h2{font-family:var(--serif);font-size:20px;display:flex;align-items:center;gap:12px}
.case-head h2 .editlink{font-family:var(--sans);font-size:11.5px;color:#c9a15d;cursor:pointer;font-weight:600;letter-spacing:.3px}
.case-head h2 .editlink:hover{text-decoration:underline}
.chips{display:flex;flex-wrap:wrap;gap:7px;margin-top:10px}
.chip{background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.14);color:#dfe3ea;font-size:12px;padding:4px 11px;border-radius:20px}
.chip b{color:#fff;font-weight:600}
.chip.gold{background:rgba(201,161,93,.18);border-color:rgba(201,161,93,.4);color:#e8d5ae}
.dz-slim{border:1.5px dashed #cfc7b8;border-radius:var(--radius);padding:11px 16px;display:flex;align-items:center;gap:10px;color:var(--ink-soft);background:#fbfaf7;font-size:13.5px;transition:all .15s;margin-bottom:16px}
.dz-slim.drag{border-color:var(--accent);background:var(--accent-soft)}
.dz-slim .btn{margin-left:auto;flex:none}
.doc-table{width:100%;border-collapse:collapse;font-size:13.5px}
.doc-table th{text-align:left;font-size:11px;text-transform:uppercase;letter-spacing:.8px;color:var(--ink-faint);font-weight:600;padding:6px 10px;border-bottom:2px solid var(--line)}
.doc-table td{padding:9px 10px;border-bottom:1px solid var(--line);vertical-align:middle}
.doc-table tbody tr{cursor:pointer}
.doc-table tbody tr:hover{background:#f8f6f1}
.doc-table tbody tr.sel{background:var(--gold-soft)}
.doc-table .tname{font-weight:600;color:var(--ink)}
.doc-table .tsub{font-size:11.5px;color:var(--ink-faint);margin-top:1px}
.doc-table td.r{text-align:right;white-space:nowrap}
.rowbtn{background:none;border:1px solid var(--line);border-radius:6px;padding:3px 9px;font-size:12px;color:var(--ink-soft)}
.rowbtn:hover{background:#fff;border-color:#c9a15d;color:var(--ink)}
.stat-strip{display:flex;gap:10px;margin:0 0 16px}
.stat{flex:1;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:12px 16px;box-shadow:var(--shadow)}
.stat .sv{font-size:21px;font-weight:700;font-family:var(--serif)}
.stat .sl{font-size:11px;color:var(--ink-faint);text-transform:uppercase;letter-spacing:.8px;margin-top:2px}
.doc-actions{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0 6px}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:8px;overflow:hidden}
.seg button{background:#fff;border:none;padding:6px 13px;font-size:12.5px;color:var(--ink-soft)}
.seg button.on{background:#39424f;color:#fff}
@media print{ #sidebar,#topbar,#chatBar,#ttsBar,.doc-actions,.btn-row{display:none!important} .panel{position:static;overflow:visible} }

/* ---------- auth screens ---------- */
#authView{display:flex;align-items:center;justify-content:center;height:100vh;background:linear-gradient(135deg,#232a35,#39424f)}
.auth-card{background:#fff;border-radius:16px;padding:36px 40px;width:420px;box-shadow:0 24px 80px rgba(0,0,0,.4)}
.auth-card h1{font-family:var(--serif);font-size:26px;margin-bottom:2px}
.auth-card h1 .amp{color:#a07d3b}
.auth-card .sub{font-size:13px;color:var(--ink-soft);margin-bottom:20px}
.auth-card label{display:block;font-size:12px;font-weight:600;color:var(--ink-soft);margin:12px 0 4px}
.auth-card input{width:100%;border:1px solid var(--line);border-radius:8px;padding:10px 12px;font-size:14px}
.auth-card input:focus{outline:none;border-color:var(--accent)}
.auth-card .btn{width:100%;margin-top:18px;padding:11px}
.auth-switch{text-align:center;font-size:13px;color:var(--ink-soft);margin-top:14px}
.auth-switch a{color:var(--accent);cursor:pointer;font-weight:600}
.auth-err{background:var(--accent-soft);color:var(--accent);border-radius:8px;padding:9px 12px;font-size:13px;margin-top:14px;display:none}
.usage-bar{height:8px;background:#eee;border-radius:6px;overflow:hidden;margin:6px 0 4px}
.usage-bar div{height:100%;background:var(--accent);border-radius:6px}
.plan-card{border:1.5px solid var(--line);border-radius:10px;padding:14px;flex:1;text-align:center}
.plan-card.current{border-color:var(--gold);background:var(--gold-soft)}
.plan-card .pname{font-weight:700}
.plan-card .pprice{font-family:var(--serif);font-size:22px;margin:4px 0}
.plan-card .pdesc{font-size:11.5px;color:var(--ink-soft);line-height:1.5}