:root{
  --amber:#FFC200; --amber-d:#E0A800; --ink:#0A0A0A; --ink2:#1A1A1A; --bg:#F4F5F7; --card:#fff; --line:#E3E5E8;
  --text:#16181D; --muted:#6B7280; --green:#15803D; --red:#B91C1C; --blue:#1D4ED8; --radius:10px;
}
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{font:14px/1.45 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--text);background:var(--bg)}
a{color:var(--blue);text-decoration:none} a:hover{text-decoration:underline}
h1{font-size:22px;margin:0} h2{font-size:16px;margin:0 0 12px} h3{font-size:13px;margin:0 0 8px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted)}
.muted{color:var(--muted)} .num{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap} .nowrap{white-space:nowrap}
.pos{color:var(--green)} .neg{color:var(--red)} .hidden{display:none!important}

/* layout */
.layout{display:flex;min-height:100%}
.sidebar{width:232px;background:var(--ink);color:#fff;flex:none;display:flex;flex-direction:column;position:sticky;top:0;height:100vh;overflow-y:auto}
.brand{display:flex;align-items:center;gap:10px;padding:18px 16px 14px;border-bottom:1px solid #262626}
.brand svg,.brand img{width:36px;height:36px;border-radius:8px;object-fit:contain;background:#fff0}
.brand b{display:block;color:var(--amber);letter-spacing:.02em;font-size:14px;line-height:1.25}
.brand span{display:block;font-size:12px;color:#cfcfcf}
.nav{padding:10px 8px;flex:1}
.nav .sec{font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:#7c7c7c;padding:14px 10px 4px}
.nav a{display:flex;align-items:center;gap:10px;color:#e6e6e6;padding:8px 10px;border-radius:7px;font-weight:500}
.nav a:hover{background:#1f1f1f;text-decoration:none}
.nav a.on{background:var(--amber);color:#000}
.nav a .pill{margin-left:auto;background:var(--amber);color:#000;border-radius:10px;font-size:11px;padding:0 7px;font-weight:700}
.nav a.on .pill{background:#000;color:var(--amber)}
.userbox{border-top:1px solid #262626;padding:12px 16px;font-size:12.5px}
.userbox b{display:block;color:#fff} .userbox a{color:var(--amber)}
.main{flex:1;min-width:0;padding:22px 28px 60px}
.topbar{display:none}
.page-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px;flex-wrap:wrap}
.actions{display:flex;gap:8px;flex-wrap:wrap;align-items:center}

/* controls */
.btn{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);background:#fff;color:var(--text);padding:8px 14px;border-radius:7px;font:inherit;font-weight:600;cursor:pointer;white-space:nowrap}
.btn:hover{background:#f3f4f6;text-decoration:none}
.btn.primary{background:var(--amber);border-color:var(--amber-d);color:#000} .btn.primary:hover{background:var(--amber-d)}
.btn.dark{background:var(--ink);border-color:var(--ink);color:#fff} .btn.dark:hover{background:#222}
.btn.danger{color:var(--red)} .btn.sm{padding:4px 9px;font-size:12.5px} .btn[disabled]{opacity:.55;cursor:default}
.linkbtn{background:none;border:0;padding:0;color:var(--blue);cursor:pointer;font:inherit}
input,select,textarea{font:inherit;color:inherit;border:1px solid #cfd3d8;border-radius:7px;padding:8px 10px;background:#fff;width:100%}
input:focus,select:focus,textarea:focus{outline:2px solid var(--amber);outline-offset:0;border-color:var(--amber-d)}
input[type=checkbox]{width:auto} textarea{min-height:70px;resize:vertical}
label.f{display:block;margin-bottom:12px} label.f>span{display:block;font-size:12.5px;font-weight:600;margin-bottom:4px;color:#374151}
.grid{display:grid;gap:14px} .g2{grid-template-columns:repeat(2,1fr)} .g3{grid-template-columns:repeat(3,1fr)} .g4{grid-template-columns:repeat(4,1fr)}
.gauto{grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.row>input,.row>select{width:auto}
.inline{display:flex;gap:6px} .inline>*:first-child{flex:1}

/* cards & tables */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.card.flush{padding:0;overflow:hidden}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px}
.stat .k{font-size:12.5px;color:var(--muted);font-weight:600} .stat .v{font-size:24px;font-weight:700;margin-top:4px;font-variant-numeric:tabular-nums}
.stat .s{font-size:12.5px;color:var(--muted);margin-top:2px} .stat.accent{border-top:3px solid var(--amber)}
.tbl-wrap{overflow-x:auto}
table.tbl{width:100%;border-collapse:collapse}
.tbl th{text-align:left;font-size:11.5px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);padding:10px 12px;border-bottom:1px solid var(--line);background:#FAFAFB;white-space:nowrap}
.tbl td{padding:10px 12px;border-bottom:1px solid #EEF0F2;vertical-align:top}
.tbl tr:last-child td{border-bottom:0}
.tbl tr.click{cursor:pointer} .tbl tr.click:hover td{background:#FFFBEA}
.tbl th.num{text-align:right}
.tbl tr.total td{font-weight:700;border-top:2px solid var(--ink);background:#FAFAFB}
.tbl tr.sub td{font-weight:700;background:#FAFAFB} .tbl tr.head td{font-weight:700;text-transform:uppercase;font-size:12px;letter-spacing:.05em;color:var(--muted);padding-top:16px}
.tbl td.indent{padding-left:28px}
.tbl tr.inactive td{color:var(--muted)}
.badge{display:inline-block;padding:2px 9px;border-radius:20px;font-size:11.5px;font-weight:700;text-transform:uppercase;letter-spacing:.03em}
.b-paid{background:#DCFCE7;color:#166534} .b-open{background:#DBEAFE;color:#1E40AF} .b-partial{background:#FEF3C7;color:#92400E}
.b-overdue{background:#FEE2E2;color:#991B1B} .b-draft{background:#E5E7EB;color:#374151} .b-void{background:#111;color:#fff}
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin-bottom:14px;flex-wrap:wrap}
.tabs a,.tabs button{background:none;border:0;border-bottom:3px solid transparent;padding:9px 14px;font:inherit;font-weight:600;color:var(--muted);cursor:pointer}
.tabs .on{color:#000;border-bottom-color:var(--amber)} .tabs a:hover{text-decoration:none;color:#000}
.toolbar{display:flex;gap:10px;align-items:center;justify-content:space-between;padding:12px;border-bottom:1px solid var(--line);flex-wrap:wrap}
.toolbar input[type=search]{max-width:280px}
.empty{padding:44px 20px;text-align:center;color:var(--muted)} .empty b{display:block;color:var(--text);font-size:15px;margin-bottom:4px}

/* dashboard */
.chart text{font-size:11px;fill:#6B7280}
.legend{display:flex;gap:14px;font-size:12.5px;color:var(--muted)} .legend i{display:inline-block;width:10px;height:10px;border-radius:2px;margin-right:5px}
.todo{display:flex;justify-content:space-between;gap:10px;padding:10px 0;border-bottom:1px solid #EEF0F2} .todo:last-child{border:0}
.bar{height:8px;background:#EEF0F2;border-radius:5px;overflow:hidden;margin-top:4px} .bar i{display:block;height:100%;background:var(--amber)}

/* document form + view */
table.lines{min-width:680px}
.modal table.lines{min-width:0}
.lines input,.lines select{padding:6px 8px}
.lines td{padding:5px 4px;border:0;vertical-align:middle} .lines th{padding:6px 4px;background:none;border-bottom:1px solid var(--line)}
.totals{margin-left:auto;width:300px;max-width:100%} .totals div{display:flex;justify-content:space-between;padding:5px 0}
.totals .grand{font-size:18px;font-weight:700;border-top:2px solid var(--ink);margin-top:6px;padding-top:10px}
.doc-wrap{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:18px;align-items:start}
.paper{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:40px 44px;color:#000}
.paper .top{display:flex;justify-content:space-between;gap:20px;border-bottom:3px solid var(--amber);padding-bottom:18px;margin-bottom:22px}
.paper .top img{max-height:64px;max-width:200px;display:block;margin-bottom:8px}
.paper .co b{font-size:17px} .paper .co{white-space:pre-line;font-size:13px}
.paper .title{text-align:right} .paper .title h2{font-size:28px;letter-spacing:.08em;margin:0 0 6px}
.paper .meta{display:flex;justify-content:space-between;gap:20px;margin-bottom:22px} .paper .meta .addr{white-space:pre-line}
.paper table{width:100%;border-collapse:collapse} .paper th{background:var(--ink);color:#fff;text-align:left;padding:8px 10px;font-size:12px;text-transform:uppercase;letter-spacing:.05em}
.paper th.num{text-align:right} .paper td{padding:9px 10px;border-bottom:1px solid #e5e5e5;vertical-align:top}
.paper .foot{margin-top:28px;font-size:13px;white-space:pre-line;color:#333}
.stamp{display:inline-block;border:3px solid;padding:2px 12px;font-weight:800;letter-spacing:.1em;border-radius:6px;transform:rotate(-6deg);margin-top:8px}
.kv{display:grid;grid-template-columns:auto 1fr;gap:3px 14px;font-size:13px} .kv dt{color:#555} .kv dd{margin:0;text-align:right;font-weight:600}
.side-list{list-style:none;margin:0;padding:0} .side-list li{display:flex;justify-content:space-between;gap:8px;padding:8px 0;border-bottom:1px solid #EEF0F2;font-size:13px} .side-list li:last-child{border:0}
.split{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:18px;align-items:start}
.preview{position:sticky;top:16px} .preview img{max-width:100%;border-radius:8px;border:1px solid var(--line)} .preview iframe{width:100%;height:70vh;border:1px solid var(--line);border-radius:8px}

/* receipts */
.dropzone{border:2px dashed #C9CDD3;border-radius:var(--radius);padding:30px;text-align:center;background:#fff;margin-bottom:16px;transition:.15s}
.dropzone.over{border-color:var(--amber);background:#FFFBEA}
.dropzone b{font-size:16px;display:block;margin-bottom:4px}
.rgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:14px}
.rcard{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column}
.rcard .thumb{height:150px;background:#F1F2F4;display:flex;align-items:center;justify-content:center;cursor:pointer;overflow:hidden}
.rcard .thumb img{width:100%;height:100%;object-fit:cover}
.rcard .ext{font-weight:800;font-size:22px;color:#9CA3AF;letter-spacing:.05em}
.rcard .body{padding:10px 12px;font-size:12.5px;flex:1} .rcard .name{font-weight:600;word-break:break-all;font-size:13px}
.rcard .acts{display:flex;gap:6px;padding:0 12px 12px;flex-wrap:wrap}

/* modal, toast, auth */
.modal-bg{position:fixed;inset:0;background:rgba(10,10,10,.55);display:flex;align-items:flex-start;justify-content:center;padding:5vh 16px;overflow-y:auto;z-index:50}
.modal{background:#fff;border-radius:12px;width:560px;max-width:100%;box-shadow:0 20px 60px rgba(0,0,0,.3)}
.modal.wide{width:860px}
.modal header{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;border-bottom:1px solid var(--line)} .modal header h2{margin:0}
.modal .mbody{padding:18px 20px} .modal footer{display:flex;justify-content:flex-end;gap:8px;padding:14px 20px;border-top:1px solid var(--line);background:#FAFAFB;border-radius:0 0 12px 12px}
.x{background:none;border:0;font-size:22px;line-height:1;cursor:pointer;color:var(--muted)}
#toast-root{position:fixed;right:18px;bottom:18px;display:flex;flex-direction:column;gap:8px;z-index:80}
.toast{background:var(--ink);color:#fff;padding:11px 16px;border-radius:8px;box-shadow:0 6px 20px rgba(0,0,0,.25);max-width:380px;border-left:4px solid var(--amber)}
.toast.err{border-left-color:#EF4444}
.auth{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#0A0A0A 0%,#1A1A1A 60%,#2a2200 100%);padding:20px}
.auth .box{background:#fff;border-radius:14px;padding:34px;width:400px;max-width:100%;box-shadow:0 20px 60px rgba(0,0,0,.5)}
.auth .logo{display:flex;align-items:center;gap:12px;margin-bottom:22px} .auth .logo svg,.auth .logo img{width:46px;height:46px;border-radius:10px;object-fit:contain}
.auth .logo b{display:block;letter-spacing:.08em;font-size:17px} .auth .logo span{color:var(--muted)}
.auth h1{margin-bottom:6px} .auth p{color:var(--muted);margin:0 0 18px}
.auth .btn{width:100%;justify-content:center;padding:11px}
.auth .alt{text-align:center;margin-top:14px;font-size:13px}
.note{background:#FFFBEA;border:1px solid #F5E3A1;border-radius:8px;padding:10px 12px;font-size:13px;margin-bottom:14px}
.note.ok{background:#ECFDF5;border-color:#A7F3D0} .note.bad{background:#FEF2F2;border-color:#FECACA}
code.pw{background:#111;color:var(--amber);padding:4px 10px;border-radius:6px;font-size:15px;user-select:all}

@media (max-width:1000px){ #dash-mid,#dash-low{grid-template-columns:1fr!important} .g4{grid-template-columns:repeat(2,1fr)} .doc-wrap,.split{grid-template-columns:1fr} .preview{position:static} }
@media (max-width:760px){
  .layout{display:block} .sidebar{position:fixed;left:-240px;z-index:40;transition:left .2s} .sidebar.open{left:0}
  .topbar{display:flex;align-items:center;gap:12px;background:var(--ink);color:#fff;padding:10px 14px;position:sticky;top:0;z-index:30}
  .topbar b{color:var(--amber);letter-spacing:.08em} .topbar button{background:none;border:1px solid #444;color:#fff;border-radius:6px;padding:4px 10px;font-size:18px}
  .main{padding:16px 14px 60px} .g2,.g3,.g4{grid-template-columns:1fr} .paper{padding:22px 18px}
}
@media print{
  body{background:#fff} .sidebar,.topbar,.page-head,.no-print,#toast-root,.doc-wrap aside{display:none!important}
  .main{padding:0} .doc-wrap{display:block} .paper,.card{border:0;padding:0;border-radius:0} .paper th{-webkit-print-color-adjust:exact;print-color-adjust:exact}
  .tbl th{background:none} a{color:#000}
}