:root{
  --bg:#f4f6f9; --panel:#fff; --text:#1f2933; --muted:#6b7785; --line:#e1e6ec;
  --primary:#1d5fa8; --primary-d:#164a84; --side:#0f2a47; --side-t:#c9d6e5;
  --ok:#1e8e4e; --ok-bg:#e5f5ec; --warn:#b26a00; --warn-bg:#fff4e0;
  --bad:#c0392b; --bad-bg:#fdecea; --info-bg:#e8f1fb;
}
*{box-sizing:border-box}
body{margin:0;font-family:"Segoe UI",system-ui,-apple-system,Roboto,Arial,sans-serif;background:var(--bg);color:var(--text);font-size:15px}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
.layout{display:flex;min-height:100vh}
.sidebar{width:230px;background:var(--side);color:var(--side-t);flex-shrink:0;display:flex;flex-direction:column}
.brand{padding:20px 18px;font-weight:700;font-size:18px;color:#fff;border-bottom:1px solid #ffffff14}
.brand small{display:block;font-weight:400;font-size:12px;color:var(--side-t);margin-top:2px}
.nav{padding:10px 0;flex:1}
.nav a{display:block;padding:10px 20px;color:var(--side-t);border-left:3px solid transparent}
.nav a:hover{background:#ffffff0d;text-decoration:none;color:#fff}
.nav a.active{background:#ffffff14;color:#fff;border-left-color:#5aa2f0}
.nav .sep{margin:12px 20px 4px;font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:#7f93ab}
.userbox{padding:14px 18px;border-top:1px solid #ffffff14;font-size:13px}
.userbox b{color:#fff;display:block}
.userbox a{color:var(--side-t);margin-right:10px}
.main{flex:1;padding:26px 32px;min-width:0}
h1{font-size:24px;margin:0 0 18px}
h2{font-size:18px;margin:26px 0 12px}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:18px}
.topbar h1{margin:0}
.card{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:20px;margin-bottom:20px}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px;margin-bottom:20px}
.stat{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:18px}
.stat .n{font-size:30px;font-weight:700}
.stat .l{color:var(--muted);font-size:13px}
.stat.alert .n{color:var(--warn)}
table{width:100%;border-collapse:collapse;background:var(--panel)}
th,td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
th{font-size:12px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);background:#fafbfc}
tr:hover td{background:#fafcff}
.table-wrap{background:var(--panel);border:1px solid var(--line);border-radius:10px;overflow-x:auto}
.table-wrap table{border:0}
.empty{padding:30px;text-align:center;color:var(--muted)}
.btn{display:inline-block;padding:9px 16px;border-radius:7px;border:1px solid var(--primary);background:var(--primary);color:#fff;font-size:14px;cursor:pointer;font-family:inherit;line-height:1.2}
.btn:hover{background:var(--primary-d);text-decoration:none}
.btn.secondary{background:#fff;color:var(--primary)}
.btn.secondary:hover{background:var(--info-bg)}
.btn.danger{background:var(--bad);border-color:var(--bad)}
.btn.success{background:var(--ok);border-color:var(--ok)}
.btn.small{padding:5px 10px;font-size:13px}
.btn-row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
form.inline{display:inline}
.badge{display:inline-block;padding:3px 9px;border-radius:20px;font-size:12px;font-weight:600;white-space:nowrap}
.b-ok{background:var(--ok-bg);color:var(--ok)}
.b-warn{background:var(--warn-bg);color:var(--warn)}
.b-bad{background:var(--bad-bg);color:var(--bad)}
.b-info{background:var(--info-bg);color:var(--primary)}
.b-muted{background:#eef1f4;color:var(--muted)}
.flash{padding:12px 16px;border-radius:8px;margin-bottom:12px;border:1px solid transparent}
.flash.success{background:var(--ok-bg);color:#14633a;border-color:#bfe5cf}
.flash.danger{background:var(--bad-bg);color:#8e2a1f;border-color:#f3c3bd}
.flash.warning{background:var(--warn-bg);color:#7a4a00;border-color:#f3dcae}
.flash.info{background:var(--info-bg);color:#164a84;border-color:#c3d9f2}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px 18px}
.grid .full{grid-column:1/-1}
label{display:block;font-size:13px;font-weight:600;margin-bottom:5px;color:#3a4652}
input[type=text],input[type=password],input[type=email],input[type=date],input[type=number],select,textarea{
  width:100%;padding:9px 11px;border:1px solid #cdd5de;border-radius:7px;font:inherit;background:#fff}
input:focus,select:focus,textarea:focus{outline:2px solid #9cc4ee;border-color:var(--primary)}
textarea{min-height:80px;resize:vertical}
.hint{font-size:12px;color:var(--muted);margin-top:4px}
.req::after{content:" *";color:var(--bad)}
.search{display:flex;gap:8px;flex-wrap:wrap}
.search input{width:280px}
.search select{width:auto}
dl.details{display:grid;grid-template-columns:200px 1fr;gap:8px 16px;margin:0}
dl.details dt{color:var(--muted);font-size:14px}
dl.details dd{margin:0}
.items-table input,.items-table select{padding:6px 8px;font-size:14px}
.items-table td{padding:6px}
.items-table .num{width:36px;color:var(--muted);text-align:center;padding-top:13px}
.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#0f2a47,#1d5fa8)}
.login-box{background:#fff;padding:36px;border-radius:14px;width:360px;max-width:92vw;box-shadow:0 20px 60px #0004}
.login-box h1{text-align:center;margin-bottom:6px}
.login-box p.sub{text-align:center;color:var(--muted);margin:0 0 22px}
.login-box .field{margin-bottom:14px}
.login-box .btn{width:100%;padding:11px}
.muted{color:var(--muted)}
.right{text-align:right}
.nowrap{white-space:nowrap}
.cols{display:grid;grid-template-columns:1fr 1fr;gap:20px}
@media (max-width:900px){
  .layout{flex-direction:column}
  .sidebar{width:100%}
  .nav{display:flex;flex-wrap:wrap;padding:0}
  .nav a{padding:10px 14px;border-left:0}
  .nav .sep{display:none}
  .main{padding:18px 16px}
  .cols{grid-template-columns:1fr}
  dl.details{grid-template-columns:1fr}
  .search input{width:100%}
}
.brand .ver{font-size:11px;font-weight:600;background:#ffffff1f;padding:2px 6px;border-radius:5px;vertical-align:middle}
fieldset{border:1px solid var(--line);border-radius:8px;padding:10px 14px;margin:0}
legend{font-size:13px;font-weight:600;color:#3a4652;padding:0 4px}
.checks label{display:inline-flex;align-items:center;gap:6px;font-weight:400;margin:2px 14px 2px 0}
.mtable input{padding:5px 6px;font-size:13px;min-width:60px}
.mtable td,.mtable th{padding:5px 6px;font-size:13px}
.mtable .calc{color:#3a4652;white-space:nowrap;font-variant-numeric:tabular-nums}
.mtable .load{color:var(--muted);font-size:12px;white-space:nowrap}
.param-block{margin-top:16px}
.param-head{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;margin-bottom:8px}
.param-head h3{margin:0;font-size:16px}
.param-block.off .table-wrap,.param-block.off .param-tools{display:none}
.hintbox{background:var(--info-bg);border:1px solid #c3d9f2;border-radius:8px;padding:10px 14px;font-size:13px;color:#164a84;margin:8px 0}
.warnbox{background:var(--warn-bg);border:1px solid #f3dcae;border-radius:8px;padding:10px 14px;font-size:13px;color:#7a4a00;margin:8px 0}
.instr-list label{display:flex;gap:8px;align-items:flex-start;font-weight:400;padding:6px 0;border-bottom:1px solid var(--line)}
.instr-list label:last-child{border-bottom:0}
.kv{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:8px 16px;font-size:13px}
.kv div b{display:block;color:var(--muted);font-weight:500;font-size:12px}
.norm table td,.norm table th{font-size:13px}
.ok-t{color:var(--ok);font-weight:700}.bad-t{color:var(--bad);font-weight:700}
.company-box{margin:10px 14px 0;padding:8px 10px;background:#ffffff12;border-radius:8px;color:#fff;font-size:13px;font-weight:600}
.linkbtn{background:none;border:0;color:#9cc4ee;cursor:pointer;font:inherit;font-weight:400;padding:0 0 0 6px;text-decoration:underline}
.nav a.nav-new{margin:6px 14px 10px;border-left:0;border-radius:8px;background:#ffffff1a;color:#fff;font-weight:700;text-align:center}
.nav a.nav-new:hover,.nav a.nav-new.active{background:#2f7ad0}

/* ===== 0.4.8: lepsza czytelność pól i tabel ===== */
:root{--muted:#55616e;--line:#d3dae3;--bg:#edf0f4;--field:#7b8a9a;--field-h:#4a5d71}
body{color:#18222c}
label{color:#18222c;font-size:13.5px}
.card{border-color:var(--line);box-shadow:0 1px 3px #0f2a4712}
.card h2{color:#0f2a47}
input[type=text],input[type=password],input[type=email],input[type=date],input[type=number],select,textarea{
  border:1px solid var(--field);background:#fff;color:#111;min-height:40px;box-shadow:inset 0 1px 2px #0f2a4714}
input::placeholder,textarea::placeholder{color:#8b97a4}
input[type=text]:hover,input[type=password]:hover,input[type=email]:hover,input[type=date]:hover,input[type=number]:hover,select:hover,textarea:hover{border-color:var(--field-h)}
input:focus,select:focus,textarea:focus{outline:3px solid #5aa2f0;outline-offset:0;border-color:var(--primary);background:#f6faff}
input[readonly],input:disabled,select:disabled,textarea:disabled{background:#eceff3;color:#4a5662;border-color:#b4bec9}
input[type=checkbox],input[type=radio]{width:18px;height:18px;accent-color:var(--primary);vertical-align:middle;cursor:pointer}
.hint{color:var(--muted);font-size:12.5px}
th{color:#33404d;background:#eef2f6}
.table-wrap{border-color:var(--line)}
.btn.secondary{border-color:var(--primary);font-weight:600}
.btn{font-weight:600}
/* tabela pomiarów */
.mtable td,.mtable th{font-size:14px;padding:6px 7px;vertical-align:middle}
.mtable th{line-height:1.25}
.mtable th.entry-h{background:#fff1c2;color:#5c4300}
.mtable input{font-size:15px;padding:7px 8px;min-height:38px;font-variant-numeric:tabular-nums;color:#0b1117}
.mtable input.meas-in{background:#fffbe8;border:1.5px solid #b08300}
.mtable input.meas-in:focus{background:#fff;border-color:var(--primary)}
.mtable tbody tr:nth-child(even) td{background:#f7f9fb}
.mtable tbody tr:hover td{background:#eef5ff}
.mtable td.num{font-weight:700;color:#33404d;text-align:center}
.mtable .calc{font-size:14.5px;font-weight:600;color:#18222c;background:#f1f4f7}
.mtable tbody tr:nth-child(even) td.calc{background:#eaeef2}
.mtable .load{color:#3f4b57;font-size:12.5px}
.mtable tr.row-ok td.res{background:#e2f4e9}
.mtable tr.row-fail td{background:#fdeceb !important}
.mtable td.res .ok-t,.mtable td.res .bad-t{display:inline-block;padding:3px 9px;border-radius:5px;font-size:13px}
.mtable td.res .ok-t{background:#cdebd9;color:#11643a}
.mtable td.res .bad-t{background:#f7c9c4;color:#8e1d12}
.param-head h3{font-size:17px;color:#0f2a47}
.param-block{border:1px solid var(--line);border-radius:10px;padding:12px 14px;background:#fbfcfd}
.param-block.off{background:#f3f5f7;opacity:.85}
.legend{font-size:12.5px;color:var(--muted);margin-top:10px;display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.legend .lg{display:inline-block;width:22px;height:14px;border-radius:3px;vertical-align:middle}
.legend .lg-in{background:#fffbe8;border:1.5px solid #b08300}
.legend .lg-calc{background:#f1f4f7;border:1px solid #c5ced8}
.items-table input,.items-table select{font-size:15px;padding:7px 9px;min-height:38px}
.items-table tbody tr:nth-child(even) td{background:#f7f9fb}
.checks label{font-size:14px;color:#18222c}
fieldset{border-color:var(--line)}
.kv div b{color:var(--muted)}
dl.details dt{color:var(--muted)}
.hintbox{color:#123f72}
.instr-list label{font-size:14px}

/* ===== 0.4.9: wyraźne linie w tabelach ===== */
:root{--tline:#a7b3c1;--tline-v:#c4cdd8}
table{border-collapse:collapse}
th,td{border-bottom:1px solid var(--tline)}
th{border-bottom:2px solid #7f8c9b;background:#e9eef4;color:#27323d}
td+td,th+th{border-left:1px solid var(--tline-v)}
.table-wrap{border:1px solid #8f9cab}
tbody tr:last-child td,table tr:last-child td{border-bottom:0}
tr:hover td{background:#f1f6fc}
.mtable td+td,.mtable th+th,.items-table td+td,.items-table th+th{border-left:1px solid var(--tline)}

dl.details dt,dl.details dd{border-bottom:1px solid #d5dce4;padding-bottom:6px}
.remarks-box .switch-label{display:flex;align-items:center;gap:8px;font-size:14px;cursor:pointer}
.remarks-box textarea{margin-top:6px}

/* ===== 0.4.10: niezależne przewijanie treści i menu ===== */
@media (min-width:901px){
  html,body{height:100%;overflow:hidden}
  .layout{height:100vh;min-height:0}
  .sidebar{height:100vh;overflow-y:auto;overscroll-behavior:contain}
  .main{height:100vh;overflow-y:auto;overscroll-behavior:contain}
}
/* dymki informacyjne */
.tip{display:inline-flex;align-items:center;justify-content:center;width:17px;height:17px;border-radius:50%;
  background:#1d5fa8;color:#fff;font:700 11px/1 Georgia,serif;font-style:italic;cursor:help;vertical-align:middle;
  margin-left:4px;flex-shrink:0;user-select:none;text-transform:none;letter-spacing:0}
.tip:hover,.tip:focus{background:#0f2a47;outline:2px solid #9cc4ee;outline-offset:1px}
#tipbox{position:fixed;z-index:1000;max-width:380px;background:#0f2a47;color:#fff;padding:10px 13px;border-radius:8px;
  font-size:13px;font-weight:400;line-height:1.45;white-space:pre-line;box-shadow:0 8px 24px #0005;pointer-events:none;text-transform:none;letter-spacing:0}
/* przykładowe wartości w polach znikają po kliknięciu */
input:focus::placeholder,textarea:focus::placeholder{color:transparent}
.log-filter .grid{grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}

/* ===== 0.4.13: rozwijana sekcja menu ===== */
.nav-group{margin-top:8px}
.nav-group>summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  margin:4px 0 0;padding:10px 20px;font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:#9fb3c9;font-weight:700;user-select:none}
.nav-group>summary::-webkit-details-marker{display:none}
.nav-group>summary::after{content:"▸";font-size:13px;transition:transform .15s}
.nav-group[open]>summary::after{transform:rotate(90deg)}
.nav-group>summary:hover{color:#fff;background:#ffffff0d}
.nav-group a{padding-left:30px}

/* ===== 0.4.19: tryb pokazowy ===== */
.demo-banner{background:var(--warn-bg);border:1px solid #f3dcae;color:#7a4a00;border-radius:8px;padding:8px 14px;margin-bottom:14px;font-size:13px;font-weight:600}
.demo-acc{margin-top:18px;padding:12px;border:1px dashed #9fb0c3;border-radius:10px;font-size:13px;background:#f6f9fd}
.demo-acc button{display:block;width:100%;margin-top:6px;padding:7px 10px;border:1px solid #9fb0c3;border-radius:7px;background:#fff;cursor:pointer;font:inherit;text-align:left}
.demo-acc button:hover{background:#e8f1fb}

/* 0.4.27: sortowanie tabel po kliknięciu nagłówka, zaznaczanie wielu pozycji */
th.sortable{cursor:pointer;user-select:none;white-space:nowrap}
th.sortable:hover,th.sortable:focus-visible{color:var(--primary);outline:none}
th.sortable::after{content:" ↕";opacity:.35;font-size:11px}
th.sortable[aria-sort=ascending]::after{content:" ▲";opacity:1}
th.sortable[aria-sort=descending]::after{content:" ▼";opacity:1}
th.chk,td.chk{width:1%;padding-right:4px;text-align:center}
th.chk input,td.chk input{width:16px;height:16px;margin:0;cursor:pointer}
.bulk-bar{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin:0;padding:10px 12px;border-top:1px solid var(--line)}

/* 0.4.29: sekcje zwijane (karta klienta) */
details.fold{margin:18px 0 8px}
details.fold>summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:10px;user-select:none}
details.fold>summary::-webkit-details-marker{display:none}
details.fold>summary::before{content:"▸";font-size:16px;color:var(--muted);transition:transform .15s;width:14px}
details.fold[open]>summary::before{transform:rotate(90deg)}
details.fold>summary h2{margin:0}
details.fold>summary:hover h2{color:var(--primary)}
details.fold>.fold-body{margin-top:12px}

/* 0.4.31: dziennik – liczba wpisów w firmach */
.log-bar { height: 10px; background: var(--line); border-radius: 5px; overflow: hidden; min-width: 80px; }
.log-bar i { display: block; height: 100%; background: var(--primary); border-radius: 5px; }
details.renumber { margin: 0 0 14px; font-size: 14px; }
details.renumber > summary { cursor: pointer; color: var(--primary); }
/* 0.4.61: zakładki menu widoczne tylko dla administratora – na żółto (także w motywach) */
.layout .nav a.nav-admin{color:#f2c94c}
.layout .nav a.nav-admin:hover,.layout .nav a.nav-admin.active{color:#ffdc6b}
.layout .nav a.nav-admin.active{border-left-color:#f2c94c}