/* Spares Inventory Management System - industrial UI
   Self-hosted: no CDN, works on an isolated plant network. */
:root{
  --bg:#eef1f5; --surface:#fff; --surface-2:#f7f9fb; --line:#d8dee7; --line-strong:#c2ccd8;
  --ink:#16202e; --ink-2:#4a5768; --ink-3:#78859a;
  --brand:#0b5cab; --brand-ink:#084a8b; --brand-soft:#e7f0fa;
  --ok:#12805c; --ok-soft:#e2f4ed;
  --warn:#a86400; --warn-soft:#fdf1dd;
  --danger:#b3261e; --danger-soft:#fbe9e7;
  --info:#5b4bbd; --info-soft:#eeebfa;
  --radius:8px; --radius-sm:5px;
  --shadow:0 1px 2px rgba(16,32,54,.07),0 2px 8px rgba(16,32,54,.05);
  --sidebar-w:246px; --topbar-h:56px;
  --mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
  --sans:"Inter","Segoe UI",Roboto,system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--sans);font-size:14px;line-height:1.5;color:var(--ink);
  background:var(--bg);-webkit-font-smoothing:antialiased}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{margin:0;font-weight:650;letter-spacing:-.01em;line-height:1.25}
h1{font-size:20px}h2{font-size:16px}h3{font-size:14px}
p{margin:0 0 10px}
code,kbd,.mono{font-family:var(--mono);font-size:.92em}
hr{border:0;border-top:1px solid var(--line);margin:16px 0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

/* ---------- Layout ---------- */
.layout{display:flex;min-height:100vh}
.sidebar{width:var(--sidebar-w);flex:0 0 var(--sidebar-w);background:#10243d;color:#c9d6e5;
  display:flex;flex-direction:column;position:fixed;inset:0 auto 0 0;z-index:40;overflow-y:auto}
.sidebar__brand{display:flex;align-items:center;gap:10px;padding:11px 14px;
  border-bottom:1px solid rgba(255,255,255,.09);min-height:var(--topbar-h)}
.sidebar__logo{height:36px;width:36px;flex:0 0 36px;object-fit:contain;background:#fff;
  border-radius:50%;padding:1px}
.sidebar__logo-fallback{width:30px;height:30px;border-radius:6px;background:var(--brand);
  display:grid;place-items:center;color:#fff;font-weight:700;font-size:13px;flex:0 0 auto}
.sidebar__title{font-size:13.5px;font-weight:650;color:#fff;line-height:1.2;min-width:0;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.sidebar__title small{display:block;font-weight:400;font-size:10.5px;color:#8fa3bb;
  text-transform:uppercase;letter-spacing:.08em;margin-top:2px}
.nav{padding:8px 0 24px;flex:1}
.nav__group{margin-top:10px}
.nav__label{padding:6px 16px;font-size:10.5px;text-transform:uppercase;letter-spacing:.09em;
  color:#7b8da3;font-weight:600}
.nav a{display:flex;align-items:center;gap:9px;padding:7px 16px;color:#c9d6e5;font-size:13.5px;
  border-left:3px solid transparent}
.nav a:hover{background:rgba(255,255,255,.06);color:#fff;text-decoration:none}
.nav a.is-active{background:rgba(59,130,246,.16);color:#fff;border-left-color:#4d9bf0;font-weight:550}
.nav .ico{width:16px;height:16px;flex:0 0 16px;opacity:.85}

.main{flex:1;margin-left:var(--sidebar-w);min-width:0;display:flex;flex-direction:column}
.topbar{height:var(--topbar-h);background:var(--surface);border-bottom:1px solid var(--line);
  display:flex;align-items:center;gap:14px;padding:0 20px;position:sticky;top:0;z-index:30}
.topbar__search{flex:1;max-width:520px;position:relative}
.topbar__search input[type=search]{width:100%;padding:7px 14px 7px 38px;
  border:1px solid var(--line-strong);border-radius:20px;font-size:13.5px;
  background:var(--surface-2)}
.topbar__search .ico{position:absolute;left:13px;top:50%;transform:translateY(-50%);
  opacity:.5;pointer-events:none}
.topbar__spacer{flex:1}
.content{padding:20px;flex:1}
.page-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  flex-wrap:wrap;margin-bottom:16px}
.page-head__sub{color:var(--ink-2);font-size:13px;margin-top:3px}
.page-actions{display:flex;gap:8px;flex-wrap:wrap}
.breadcrumb{font-size:12px;color:var(--ink-3);margin-bottom:5px}
.breadcrumb a{color:var(--ink-3)}

/* ---------- Cards ---------- */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);margin-bottom:16px}
.card__head{padding:12px 16px;border-bottom:1px solid var(--line);display:flex;
  align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.card__body{padding:16px}
.card__body--flush{padding:0}
.card__foot{padding:12px 16px;border-top:1px solid var(--line);background:var(--surface-2);
  border-radius:0 0 var(--radius) var(--radius)}

/* ---------- Stat tiles ---------- */
.stats{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:12px;margin-bottom:18px}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:13px 15px;box-shadow:var(--shadow);display:block}
.stat:hover{text-decoration:none;border-color:var(--line-strong)}
.stat__label{font-size:11px;text-transform:uppercase;letter-spacing:.07em;color:var(--ink-3);font-weight:600}
.stat__value{font-size:26px;font-weight:680;letter-spacing:-.02em;margin-top:5px;color:var(--ink);
  font-variant-numeric:tabular-nums}
.stat__meta{font-size:12px;color:var(--ink-2);margin-top:3px}
.stat--ok .stat__value{color:var(--ok)}
.stat--warn .stat__value{color:var(--warn)}
.stat--danger .stat__value{color:var(--danger)}
.stat--brand .stat__value{color:var(--brand)}

/* ---------- Tables ---------- */
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
table.data{width:100%;border-collapse:collapse;font-size:13px}
table.data th,table.data td{padding:8px 12px;text-align:left;border-bottom:1px solid var(--line);
  vertical-align:middle}
table.data thead th{background:var(--surface-2);font-size:11px;text-transform:uppercase;
  letter-spacing:.06em;color:var(--ink-2);font-weight:650;white-space:nowrap;position:sticky;top:0;z-index:1}
table.data tbody tr:hover{background:#f4f8fd}
table.data td.num,table.data th.num{text-align:right;font-variant-numeric:tabular-nums;
  font-family:var(--mono);white-space:nowrap}
table.data td.mid,table.data th.mid{text-align:center}
table.data tfoot td{font-weight:650;background:var(--surface-2);border-top:2px solid var(--line-strong)}
.table--compact th,.table--compact td{padding:6px 10px}
.empty{padding:40px 20px;text-align:center;color:var(--ink-3)}
.empty strong{display:block;color:var(--ink-2);margin-bottom:4px;font-size:14px}

/* ---------- Forms ---------- */
.form-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px 16px}
.form-grid--2{grid-template-columns:repeat(auto-fill,minmax(320px,1fr))}
.field{display:flex;flex-direction:column;gap:5px;min-width:0}
.field--wide{grid-column:1/-1}
.field label{font-size:12px;font-weight:600;color:var(--ink-2)}
.field label .req{color:var(--danger)}
.field .help{font-size:11.5px;color:var(--ink-3)}
.field .errorlist{margin:0;padding:0;list-style:none;color:var(--danger);font-size:12px}
input[type=text],input[type=number],input[type=date],input[type=email],input[type=password],
input[type=url],input[type=search],input[type=tel],input[type=file],select,textarea{
  width:100%;padding:7px 10px;border:1px solid var(--line-strong);border-radius:var(--radius-sm);
  font-size:13.5px;font-family:inherit;background:#fff;color:var(--ink)}
input:disabled,select:disabled,textarea:disabled{background:#eef1f5;color:var(--ink-3)}
textarea{min-height:70px;resize:vertical}
select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M2 4l4 4 4-4' fill='none' stroke='%234a5768' stroke-width='1.6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 9px center;padding-right:28px}
.check{display:flex;align-items:flex-start;gap:8px;font-size:13px}
.check input{margin-top:2px;width:15px;height:15px;flex:0 0 auto}
fieldset{border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;margin:0 0 16px}
legend{font-size:12px;font-weight:650;text-transform:uppercase;letter-spacing:.06em;
  color:var(--ink-2);padding:0 6px}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:7px 14px;
  border-radius:var(--radius-sm);border:1px solid var(--line-strong);background:#fff;color:var(--ink);
  font-size:13.5px;font-weight:550;font-family:inherit;cursor:pointer;white-space:nowrap;
  text-decoration:none;line-height:1.4}
.btn:hover{background:var(--surface-2);text-decoration:none}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn--primary{background:var(--brand);border-color:var(--brand);color:#fff}
.btn--primary:hover{background:var(--brand-ink);color:#fff}
.btn--danger{background:var(--danger);border-color:var(--danger);color:#fff}
.btn--danger:hover{background:#8f1e17;color:#fff}
.btn--ok{background:var(--ok);border-color:var(--ok);color:#fff}
.btn--ok:hover{background:#0d6449;color:#fff}
.btn--ghost{border-color:transparent;background:transparent}
.btn--ghost:hover{background:rgba(16,32,54,.06)}
.btn--sm{padding:4px 9px;font-size:12.5px}
.btn--lg{padding:11px 22px;font-size:15px}
.btn--block{width:100%}
.btn-row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}

/* ---------- Badges ---------- */
.badge{display:inline-flex;align-items:center;gap:4px;padding:2px 8px;border-radius:11px;
  font-size:11px;font-weight:650;text-transform:uppercase;letter-spacing:.04em;white-space:nowrap}
.badge--ok{background:var(--ok-soft);color:var(--ok)}
.badge--warn{background:var(--warn-soft);color:var(--warn)}
.badge--danger{background:var(--danger-soft);color:var(--danger)}
.badge--info{background:var(--info-soft);color:var(--info)}
.badge--brand{background:var(--brand-soft);color:var(--brand-ink)}
.badge--muted{background:#e9edf2;color:var(--ink-2)}

/* ---------- Messages ---------- */
.messages{margin-bottom:16px;display:flex;flex-direction:column;gap:8px}
.alert{padding:10px 14px;border-radius:var(--radius-sm);border:1px solid;font-size:13.5px;
  display:flex;gap:9px;align-items:flex-start}
.alert--success{background:var(--ok-soft);border-color:#b6e0d0;color:#0b5a41}
.alert--error,.alert--danger{background:var(--danger-soft);border-color:#f0c2be;color:#8f1e17}
.alert--warning{background:var(--warn-soft);border-color:#f0d9ac;color:#7d4a00}
.alert--info{background:var(--brand-soft);border-color:#bcd6f0;color:var(--brand-ink)}

/* ---------- Filters ---------- */
.filters{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:10px 12px;
  align-items:end}
.filters .field label{font-size:11px}
.filters__actions{display:flex;gap:8px;align-items:center;flex-wrap:wrap}

/* ---------- Pagination ---------- */
.pager{display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:11px 16px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-2);flex-wrap:wrap}
.pager__links{display:flex;gap:5px;align-items:center}
.pager__links a,.pager__links span{padding:4px 9px;border:1px solid var(--line-strong);
  border-radius:var(--radius-sm);background:#fff;font-size:12.5px}
.pager__links .is-current{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600}

/* ---------- Tabs ---------- */
.tabs{display:flex;gap:2px;border-bottom:1px solid var(--line);margin-bottom:16px;overflow-x:auto}
.tabs a{padding:8px 14px;font-size:13.5px;color:var(--ink-2);border-bottom:2px solid transparent;
  white-space:nowrap;font-weight:550}
.tabs a:hover{color:var(--ink);text-decoration:none}
.tabs a.is-active{color:var(--brand);border-bottom-color:var(--brand)}

/* ---------- Misc helpers ---------- */
.muted{color:var(--ink-3)}
.small{font-size:12px}
.strong{font-weight:650}
.nowrap{white-space:nowrap}
.text-right{text-align:right}.text-center{text-align:center}
.flex{display:flex}.items-center{align-items:center}.gap-8{gap:8px}.gap-12{gap:12px}
.mt-0{margin-top:0}.mt-8{margin-top:8px}.mt-16{margin-top:16px}.mt-24{margin-top:24px}
.mb-0{margin-bottom:0}.mb-8{margin-bottom:8px}.mb-16{margin-bottom:16px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.spec-table{width:100%;border-collapse:collapse;font-size:13.5px}
.spec-table th{width:42%;text-align:left;padding:6px 10px 6px 0;color:var(--ink-2);font-weight:550;
  vertical-align:top;border-bottom:1px solid var(--line)}
.spec-table td{padding:6px 0;border-bottom:1px solid var(--line);vertical-align:top}
.qty-big{font-size:32px;font-weight:700;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.divider{height:1px;background:var(--line);margin:14px 0}
.thumb{width:100%;aspect-ratio:4/3;object-fit:contain;background:var(--surface-2);
  border:1px solid var(--line);border-radius:var(--radius-sm)}
.chip{display:inline-block;padding:2px 8px;background:var(--surface-2);border:1px solid var(--line);
  border-radius:11px;font-size:11.5px;color:var(--ink-2);font-family:var(--mono)}

/* ---------- Login ---------- */
.auth{min-height:100vh;display:grid;place-items:center;padding:20px;
  background:linear-gradient(160deg,#10243d 0%,#1b3a5e 55%,#25507f 100%)}
.auth__card{width:100%;max-width:390px;background:#fff;border-radius:12px;padding:30px 28px;
  box-shadow:0 20px 50px rgba(8,20,35,.4)}
.auth__brand{text-align:center;margin-bottom:22px}
.auth__brand img{max-height:88px;max-width:220px;object-fit:contain;border-radius:50%}
.auth__brand h1{font-size:19px;margin-top:12px}
.auth__brand p{font-size:12px;color:var(--ink-3);text-transform:uppercase;letter-spacing:.09em;margin:4px 0 0}

/* ---------- Scanner ---------- */
.scanner{max-width:760px;margin:0 auto}
.scanner__head{text-align:center;margin-bottom:18px}
.scanner__head h1{font-size:22px;letter-spacing:.04em;text-transform:uppercase}
.scanner__input{position:relative}
.scanner__input input{width:100%;padding:20px 20px 20px 56px;font-size:22px;font-family:var(--mono);
  border:2px solid var(--brand);border-radius:10px;letter-spacing:.06em;background:#fff;
  box-shadow:0 4px 18px rgba(11,92,171,.14)}
.scanner__input .ico{position:absolute;left:19px;top:50%;transform:translateY(-50%);opacity:.55}
.scanner__hint{text-align:center;margin-top:12px;font-size:13px;font-weight:650;
  letter-spacing:.14em;text-transform:uppercase;color:var(--ink-2)}
.scanner__card{margin-top:20px}
.scanner__actions{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:10px}
.scanner__actions .btn{padding:14px 10px;font-size:14px;font-weight:600}

/* ---------- Public QR page ---------- */
.public{max-width:640px;margin:0 auto;padding:16px}
.public__head{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:16px;margin-bottom:14px;box-shadow:var(--shadow)}
.public__meta{display:flex;gap:6px;flex-wrap:wrap;margin-top:12px}
.public__foot{text-align:center;padding:22px 12px 32px;color:var(--ink-2)}
/* No logo here or on the label - the brand mark is for the application UI only. */

/* ---------- Charts ---------- */
.chart{width:100%;height:auto;display:block}
.chart-legend{display:flex;gap:14px;flex-wrap:wrap;font-size:12px;color:var(--ink-2);margin-top:10px}
.chart-legend span{display:inline-flex;align-items:center;gap:6px}
.chart-legend i{width:10px;height:10px;border-radius:2px;display:inline-block}

/* ---------- Responsive ---------- */
.sidebar-toggle{display:none;background:none;border:0;cursor:pointer;padding:6px;border-radius:5px}
.scrim{display:none}
@media (max-width:980px){
  .sidebar{transform:translateX(-100%);transition:transform .18s ease}
  body.nav-open .sidebar{transform:none}
  body.nav-open .scrim{display:block;position:fixed;inset:0;background:rgba(8,20,35,.45);z-index:35}
  .main{margin-left:0}
  .sidebar-toggle{display:inline-flex}
  .grid-2,.grid-3{grid-template-columns:1fr}
  .content{padding:14px}
}
@media (max-width:560px){
  .stats{grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}
  .stat__value{font-size:22px}
  .topbar__search{display:none}
  .scanner__input input{font-size:18px;padding:16px 16px 16px 48px}
}

/* ---------- Print ---------- */
@media print{
  .sidebar,.topbar,.page-actions,.no-print,.pager,.filters,.scrim{display:none!important}
  .main{margin-left:0}
  body{background:#fff;font-size:11pt}
  .card{border:0;box-shadow:none;margin:0}
  .card__body{padding:0}
  table.data{font-size:9.5pt}
  table.data thead th{background:#eee!important;-webkit-print-color-adjust:exact;print-color-adjust:exact}
  a{color:inherit;text-decoration:none}
  .print-header{display:block!important}
}
.print-header{display:none;margin-bottom:14px;border-bottom:2px solid #000;padding-bottom:8px}
.print-header img{max-height:46px;max-width:170px;object-fit:contain;border-radius:50%}