/* =====================================================================
   LDS — visual system
   Reference: the service sticker on the bottom of a laptop. Etched plates,
   instrument blue, monospaced identifiers, signal stripes for verdicts.
   ===================================================================== */

:root{
  --paper:#eaeef1;
  --surface:#ffffff;
  --plate:#f5f7f8;
  --ink:#15202a;
  --ink-soft:#42525f;
  --muted:#6d7d8a;
  --line:#d4dce2;
  --line-soft:#e6ecf0;
  --signal:#0b5fa5;
  --signal-dim:#e3eef8;
  --ok:#1c7a4c;      --ok-bg:#e2f2e9;
  --warn:#a8690b;    --warn-bg:#fbeedb;
  --bad:#b02a2a;     --bad-bg:#fae6e4;
  --info:#3a5fa8;    --info-bg:#e7ecf7;
  --idle:#586b7a;    --idle-bg:#e7ecef;
  --rail:#132029;
  --rail-soft:#93a6b4;
  --radius:4px;
  --shadow:0 1px 2px rgba(19,32,41,.08), 0 6px 18px -12px rgba(19,32,41,.35);
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:var(--paper);
  color:var(--ink);
  font-family:"IBM Plex Sans Arabic","IBM Plex Sans",-apple-system,BlinkMacSystemFont,"Segoe UI",Tahoma,sans-serif;
  font-size:14.5px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--signal);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:-.01em}
h1{font-size:1.5rem}
h2{font-size:1.1rem}
h3{font-size:.95rem}
code,.mono,.id,td.num,.plate dd{font-family:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace}
:focus-visible{outline:2px solid var(--signal);outline-offset:2px}

/* ---------------------------------------------------------- structure */
.shell{display:flex;min-height:100vh}
.rail{
  width:232px;flex:0 0 232px;background:var(--rail);color:#e8eef2;
  display:flex;flex-direction:column;position:sticky;top:0;height:100vh;
}
.rail .brand{padding:20px 20px 16px;border-bottom:1px solid rgba(255,255,255,.08)}
.rail{border-left:1px solid rgba(255,255,255,.06)}
.rail .brand .mark{font-family:"IBM Plex Mono",monospace;font-size:1.35rem;font-weight:600;letter-spacing:.06em;color:#fff}
.rail .brand small{display:block;color:var(--rail-soft);font-size:.72rem;line-height:1.35;margin-top:3px}
.rail nav{padding:12px 10px;overflow-y:auto;flex:1}
.rail .group{color:#69808f;font-size:.68rem;letter-spacing:.08em;margin:14px 10px 5px;font-weight:600}
.rail a{
  display:flex;align-items:center;gap:9px;padding:8px 11px;border-radius:var(--radius);
  color:#c3d1db;font-size:.88rem;margin-bottom:1px;
}
.rail a:hover{background:rgba(255,255,255,.07);color:#fff;text-decoration:none}
.rail a.active{background:var(--signal);color:#fff}
.rail a .ic{width:16px;text-align:center;opacity:.85;font-size:.95rem}
.rail .foot{padding:12px 16px;border-top:1px solid rgba(255,255,255,.08);font-size:.75rem;color:var(--rail-soft)}

.main{flex:1;min-width:0;display:flex;flex-direction:column}
.topbar{
  background:var(--surface);border-bottom:1px solid var(--line);
  padding:12px 24px;display:flex;align-items:center;gap:16px;position:sticky;top:0;z-index:20;
}
.topbar .quick{flex:1;max-width:420px;position:relative}
.topbar .quick input{width:100%}
.topbar .who{font-size:.82rem;color:var(--muted);text-align:right;line-height:1.3}
.topbar .who strong{display:block;color:var(--ink);font-size:.88rem}
.content{padding:22px 24px 48px;max-width:1400px;width:100%}

.page-head{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;margin-bottom:18px;flex-wrap:wrap}
.page-head p{margin:4px 0 0;color:var(--muted);font-size:.88rem;max-width:62ch}
.actions{display:flex;gap:8px;flex-wrap:wrap}

/* ------------------------------------------------------------- pieces */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.card + .card{margin-top:18px}
.card > header{padding:13px 16px;border-bottom:1px solid var(--line-soft);display:flex;align-items:center;justify-content:space-between;gap:12px}
.card > header h2{font-size:.95rem}
.card .body{padding:16px}
.card .body.tight{padding:0}

.grid{display:grid;gap:14px}
.g-6{grid-template-columns:repeat(6,1fr)}
.g-4{grid-template-columns:repeat(4,1fr)}
.g-3{grid-template-columns:repeat(3,1fr)}
.g-2{grid-template-columns:repeat(2,1fr)}

/* metric tiles — stripe carries the verdict, number carries the weight */
.metric{background:var(--surface);border:1px solid var(--line);border-right:3px solid var(--idle);border-radius:var(--radius);padding:13px 15px;box-shadow:var(--shadow)}
.metric .k{font-size:.78rem;color:var(--muted)}
.metric .v{font-family:"IBM Plex Mono",monospace;font-size:1.75rem;font-weight:600;line-height:1.2;margin-top:2px}
.metric .sub{font-size:.74rem;color:var(--muted)}
.metric.ok{border-right-color:var(--ok)}      .metric.ok .v{color:var(--ok)}
.metric.warn{border-right-color:var(--warn)}  .metric.warn .v{color:var(--warn)}
.metric.bad{border-right-color:var(--bad)}    .metric.bad .v{color:var(--bad)}
.metric.signal{border-right-color:var(--signal)}
.metric.idle{border-right-color:var(--idle)}

/* the spec plate — modelled on a laptop's service label */
.plate{
  background:var(--plate);border:1px solid var(--line);border-radius:var(--radius);
  padding:14px 16px;display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px 20px;margin:0;
}
.plate div{min-width:0}
.plate dt{font-size:.72rem;color:var(--muted);margin-bottom:1px}
.plate dd{margin:0;font-size:.88rem;word-break:break-word}

.badge{
  display:inline-block;padding:2px 8px;border-radius:2px;font-size:.72rem;font-weight:600;
  letter-spacing:.03em;font-family:"IBM Plex Mono",monospace;white-space:nowrap;
}
.badge.ok{background:var(--ok-bg);color:var(--ok)}
.badge.warn{background:var(--warn-bg);color:var(--warn)}
.badge.bad{background:var(--bad-bg);color:var(--bad)}
.badge.info{background:var(--info-bg);color:var(--info)}
.badge.idle{background:var(--idle-bg);color:var(--idle)}
.badge.mute{background:#eaeef0;color:#6d7d8a}
.badge.lg{font-size:.85rem;padding:4px 12px}

.chip{display:inline-flex;align-items:center;gap:5px;background:var(--plate);border:1px solid var(--line);
  border-radius:20px;padding:3px 11px;font-size:.78rem;color:var(--ink-soft)}

/* ------------------------------------------------------------- tables */
.table-wrap{overflow-x:auto}
table.data{width:100%;border-collapse:collapse;font-size:.86rem}
table.data th{
  text-align:right;padding:9px 14px;background:var(--plate);color:var(--muted);
  font-weight:600;font-size:.75rem;border-bottom:1px solid var(--line);white-space:nowrap;
}
table.data td{padding:10px 14px;border-bottom:1px solid var(--line-soft);vertical-align:middle}
table.data tbody tr:hover{background:#f7fafb}
table.data tbody tr.row-ok{box-shadow:inset -3px 0 0 var(--ok)}
table.data tbody tr.row-warn{box-shadow:inset -3px 0 0 var(--warn)}
table.data tbody tr.row-bad{box-shadow:inset -3px 0 0 var(--bad)}
table.data tbody tr.row-idle{box-shadow:inset -3px 0 0 var(--idle)}
table.data tbody tr.row-mute{box-shadow:inset -3px 0 0 #c9d2d8}
table.data .id{font-size:.8rem;color:var(--ink-soft)}
table.data th a{color:var(--muted)}
.empty{padding:44px 20px;text-align:center;color:var(--muted)}
.empty strong{display:block;color:var(--ink);margin-bottom:4px;font-size:.95rem}

/* -------------------------------------------------------------- forms */
label.f{display:block;font-size:.78rem;color:var(--muted);margin-bottom:4px}
input[type=text],input[type=search],input[type=password],input[type=date],input[type=number],select,textarea{
  width:100%;padding:8px 11px;border:1px solid var(--line);border-radius:var(--radius);
  background:#fff;color:var(--ink);font:inherit;font-size:.88rem;
}
textarea{min-height:84px;resize:vertical}
input:focus,select:focus,textarea:focus{border-color:var(--signal);outline:none;box-shadow:0 0 0 3px var(--signal-dim)}
.field{margin-bottom:13px}
.filters{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:11px;align-items:end}

.btn{
  display:inline-flex;align-items:center;gap:7px;padding:8px 14px;border-radius:var(--radius);
  border:1px solid var(--line);background:var(--surface);color:var(--ink);font:inherit;font-size:.86rem;
  font-weight:500;cursor:pointer;
}
.btn:hover{background:var(--plate);text-decoration:none}
.btn.primary{background:var(--signal);border-color:var(--signal);color:#fff}
.btn.primary:hover{background:#094f8a}
.btn.danger{color:var(--bad);border-color:#e8c4c0}
.btn.danger:hover{background:var(--bad-bg)}
.btn.sm{padding:4px 10px;font-size:.78rem}
.btn[disabled]{opacity:.5;cursor:not-allowed}

/* --------------------------------------------------------------- misc */
.notice{padding:11px 14px;border-radius:var(--radius);border:1px solid var(--line);background:var(--surface);
  border-right:3px solid var(--signal);margin-bottom:16px;font-size:.88rem}
.notice.ok{border-right-color:var(--ok);background:var(--ok-bg)}
.notice.bad{border-right-color:var(--bad);background:var(--bad-bg)}
.notice.warn{border-right-color:var(--warn);background:var(--warn-bg)}

.tabs{display:flex;gap:2px;border-bottom:1px solid var(--line);margin-bottom:18px;overflow-x:auto}
.tabs a{padding:9px 15px;color:var(--muted);font-size:.88rem;border-bottom:2px solid transparent;white-space:nowrap}
.tabs a:hover{color:var(--ink);text-decoration:none}
.tabs a.active{color:var(--signal);border-bottom-color:var(--signal);font-weight:600}

.meter{height:6px;background:#e3e9ed;border-radius:3px;overflow:hidden;min-width:70px}
.meter span{display:block;height:100%;background:var(--ok)}
.meter.warn span{background:var(--warn)}
.meter.bad span{background:var(--bad)}

.pager{display:flex;gap:6px;align-items:center;justify-content:space-between;padding:12px 16px;border-top:1px solid var(--line-soft);font-size:.83rem;color:var(--muted);flex-wrap:wrap}
.pager .pages{display:flex;gap:4px}
.pager .pages a,.pager .pages span{padding:4px 10px;border:1px solid var(--line);border-radius:var(--radius);color:var(--ink-soft)}
.pager .pages span.on{background:var(--signal);border-color:var(--signal);color:#fff}

.kv{display:grid;grid-template-columns:auto 1fr;gap:6px 16px;font-size:.87rem;margin:0}
.kv dt{color:var(--muted)}
.kv dd{margin:0;font-family:"IBM Plex Mono",monospace}

.stack{display:flex;flex-direction:column;gap:14px}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.spacer{flex:1}
.muted{color:var(--muted)}
.small{font-size:.8rem}
.right{text-align:left}
.nowrap{white-space:nowrap}

/* scanner */
#reader{width:100%;max-width:460px;margin:0 auto;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.scan-hint{text-align:center;color:var(--muted);font-size:.85rem;margin-top:12px}

/* login */
.auth{min-height:100vh;display:grid;place-items:center;background:var(--rail);padding:20px}
.auth .box{width:100%;max-width:370px;background:var(--surface);border-radius:6px;padding:28px;box-shadow:0 24px 60px -20px rgba(0,0,0,.5)}
.auth .mark{font-family:"IBM Plex Mono",monospace;font-size:1.8rem;font-weight:600;letter-spacing:.08em}
.auth p.sub{margin:2px 0 22px;color:var(--muted);font-size:.85rem}

/* print / report */
@media print{
  .rail,.topbar,.actions,.no-print{display:none !important}
  body{background:#fff;font-size:11.5pt}
  .content{padding:0;max-width:none}
  .card{box-shadow:none;break-inside:avoid}
  a{color:#000}
}

@media (max-width:1100px){ .g-6{grid-template-columns:repeat(3,1fr)} .g-4{grid-template-columns:repeat(2,1fr)} }
@media (max-width:860px){
  .shell{flex-direction:column}
  .rail{width:100%;flex:none;height:auto;position:static;flex-direction:row;align-items:center;overflow-x:auto}
  .rail .brand{border-bottom:none;border-right:1px solid rgba(255,255,255,.08);padding:12px 16px;white-space:nowrap}
  .rail .brand small{display:none}
  .rail nav{display:flex;padding:8px;gap:2px;align-items:center}
  .rail .group,.rail .foot{display:none}
  .rail a{white-space:nowrap;padding:7px 10px}
  .content{padding:16px 14px 40px}
  .topbar{padding:10px 14px}
  .topbar .who{display:none}
  .g-6,.g-4,.g-3,.g-2{grid-template-columns:repeat(2,1fr)}
  h1{font-size:1.25rem}
}
@media (prefers-reduced-motion:reduce){*{animation:none !important;transition:none !important}}


/* ------------------------------------------------- Arabic / RTL details */
[dir=rtl] .rail a .ic{transform:scaleX(-1)}
[dir=rtl] .mono,[dir=rtl] .id,[dir=rtl] td.num,[dir=rtl] .plate dd,
[dir=rtl] .kv dd,[dir=rtl] .metric .v{direction:ltr;text-align:right;unicode-bidi:embed}
[dir=rtl] table.data td.id,[dir=rtl] table.data td.mono{direction:ltr;text-align:right}
[dir=rtl] .badge{direction:rtl}
[dir=rtl] input,[dir=rtl] select,[dir=rtl] textarea{text-align:right}
[dir=rtl] input[type=date],[dir=rtl] input[type=number]{direction:ltr;text-align:right}
[dir=rtl] .auth .mark,[dir=rtl] .rail .brand .mark{direction:ltr}
[dir=rtl] .tabs a{border-bottom:2px solid transparent}
[dir=rtl] .sign div{border-top:1px solid var(--ink)}