/* ============================================================
   Kairos Robotics ERP — Carbon & Lime
   Codes are always mono. Stock direction is always coloured.
   ============================================================ */

:root {
  --carbon: #0b0d0f;
  --slab: #141719;
  --ridge: #1e2226;
  --edge: #2a3037;
  --lime: #c7f04a;
  --lime-dim: #8fae2f;
  --pearl: #e6e9ec;
  --steel: #7e8894;
  --amber: #f2a93b;
  --rust: #ff6b5a;
  --jade: #4fd18b;

  /* semantic tokens so a light theme is a variable swap, not a rewrite */
  --on-accent: #10130a;                 /* ink that stays dark on lime */
  --link: var(--lime);
  --hover: rgba(255, 255, 255, 0.03);
  --hover-strong: rgba(255, 255, 255, 0.025);
  --line: rgba(30, 34, 38, 0.7);
  --placeholder: #5c6570;

  --rail-w: 224px;
  --bar-h: 56px;

  --ui: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;

  --r-sm: 3px;
  --r-md: 6px;
  --sp: 8px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--carbon);
  color: var(--pearl);
  font-family: var(--ui);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }

:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}

/* ---------------------------------------------------- wordmark */

.wordmark {
  font-family: var(--mono);
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-size: 13px;
  color: var(--pearl);
}
.wordmark .mark { color: var(--lime); }
.wordmark .sub {
  display: block;
  font-size: 9px;
  letter-spacing: 0.3em;
  color: var(--steel);
  font-weight: 500;
  margin-top: 2px;
}

/* ------------------------------------------------------- shell */

.shell { display: flex; min-height: 100vh; }

.rail {
  width: var(--rail-w);
  flex: 0 0 var(--rail-w);
  background: var(--slab);
  border-right: 1px solid var(--ridge);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.rail-head {
  padding: 16px 18px;
  border-bottom: 1px solid var(--ridge);
}

.rail-nav { padding: 10px 0; flex: 1; }

.rail-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 18px;
  color: var(--steel);
  font-size: 13px;
  border-left: 2px solid transparent;
}
.rail-nav a:hover {
  color: var(--pearl);
  background: var(--hover);
  text-decoration: none;
}
.rail-nav a.on {
  color: var(--pearl);
  border-left-color: var(--lime);
  background: rgba(199, 240, 74, 0.06);
}
.rail-nav .badge { margin-left: auto; }

.rail-foot {
  padding: 12px 18px;
  border-top: 1px solid var(--ridge);
  font-size: 12px;
  color: var(--steel);
}

.main { flex: 1; min-width: 0; display: flex; flex-direction: column; }

.topbar {
  height: var(--bar-h);
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 18px;
  border-bottom: 1px solid var(--ridge);
  background: var(--slab);
  position: sticky;
  top: 0;
  z-index: 20;
}

.topbar h1 {
  font-size: 15px;
  font-weight: 600;
  margin: 0;
  letter-spacing: -0.01em;
}

.topbar .spacer { flex: 1; }

.clock {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--steel);
  letter-spacing: 0.04em;
}

.who {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  line-height: 1.25;
}
.who .name { font-size: 12px; }
.who .role {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--lime-dim);
}

.content { padding: 22px; flex: 1; }

/* -------------------------------------------------- primitives */

.eyebrow {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--steel);
  margin: 0 0 8px;
}

.panel {
  background: var(--slab);
  border: 1px solid var(--ridge);
  border-radius: var(--r-md);
  margin-bottom: 18px;
}
.panel-head {
  padding: 12px 16px;
  border-bottom: 1px solid var(--ridge);
  display: flex;
  align-items: center;
  gap: 12px;
}
.panel-head h2 { font-size: 13px; margin: 0; font-weight: 600; }
.panel-head .spacer { flex: 1; }
.panel-body { padding: 16px; }
.panel-body.flush { padding: 0; }

.grid { display: grid; gap: 14px; }
.grid.k4 { grid-template-columns: repeat(4, 1fr); }
.grid.k3 { grid-template-columns: repeat(3, 1fr); }
.grid.k2 { grid-template-columns: repeat(2, 1fr); }

/* KPI tiles: the number leads, the label explains */
.kpi {
  background: var(--slab);
  border: 1px solid var(--ridge);
  border-radius: var(--r-md);
  padding: 14px 16px;
  display: block;
  color: inherit;
}
.kpi:hover { border-color: var(--edge); text-decoration: none; }
.kpi .v {
  font-family: var(--mono);
  font-size: 28px;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.1;
}
.kpi .l { font-size: 12px; margin-top: 4px; }
.kpi .h { font-size: 11px; color: var(--steel); margin-top: 2px; }
.kpi.warn .v { color: var(--amber); }
.kpi.bad .v { color: var(--rust); }

/* -------------------------------------------------- data tables */

table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
table.data thead th {
  position: sticky;
  top: 0;
}
table.data th {
  text-align: left;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--steel);
  font-weight: 500;
  padding: 9px 14px;
  border-bottom: 1px solid var(--ridge);
  white-space: nowrap;
  background: var(--slab);
}
table.data td {
  padding: 9px 14px;
  border-bottom: 1px solid var(--line);
  vertical-align: middle;
}
table.data tbody tr:hover { background: var(--hover-strong); }
table.data td.num, table.data th.num { text-align: right; font-family: var(--mono); }
table.data td.mono { font-family: var(--mono); font-size: 12px; }
.table-wrap { overflow-x: auto; }

.empty {
  padding: 40px 16px;
  text-align: center;
  color: var(--steel);
}
.empty strong { display: block; color: var(--pearl); margin-bottom: 4px; font-size: 14px; }

/* --------------------------------------- signature: ledger tape */

.tape { border-left: 2px solid var(--ridge); margin-left: 8px; }
.tape-row {
  display: grid;
  grid-template-columns: 110px 1fr 120px 130px;
  gap: 12px;
  padding: 8px 14px;
  border-bottom: 1px solid var(--line);
  font-size: 12.5px;
  position: relative;
}
.tape-row::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 15px;
  width: 8px;
  height: 2px;
  background: var(--edge);
}
.tape-row.in::before { background: var(--jade); }
.tape-row.out::before { background: var(--rust); }
.tape-row .when { font-family: var(--mono); color: var(--steel); font-size: 11px; }
.tape-row .what { min-width: 0; }
.tape-row .what .code { font-family: var(--mono); color: var(--pearl); }
.tape-row .what .note { color: var(--steel); font-size: 11px; }
.tape-row .qty { font-family: var(--mono); text-align: right; font-weight: 600; }
.tape-row.in .qty { color: var(--jade); }
.tape-row.out .qty { color: var(--rust); }
.tape-row .where { font-family: var(--mono); font-size: 11px; color: var(--steel); text-align: right; }

/* -------------------------------------------------------- chips */

.chip {
  display: inline-block;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 2px 7px;
  border-radius: var(--r-sm);
  border: 1px solid var(--edge);
  color: var(--steel);
  white-space: nowrap;
}
.chip.lime { border-color: var(--lime-dim); color: var(--lime); }
.chip.amber { border-color: var(--amber); color: var(--amber); }
.chip.rust { border-color: var(--rust); color: var(--rust); }
.chip.jade { border-color: var(--jade); color: var(--jade); }
.chip.solid { background: var(--lime); color: var(--on-accent); border-color: var(--lime); }

.badge {
  font-family: var(--mono);
  font-size: 10px;
  padding: 1px 6px;
  border-radius: 9px;
  background: var(--lime);
  color: var(--on-accent);
  font-weight: 700;
}

.code {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--pearl);
}
.rev {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--steel);
  border: 1px solid var(--edge);
  border-radius: var(--r-sm);
  padding: 0 4px;
  margin-left: 6px;
}

.muted { color: var(--steel); }
.small { font-size: 12px; }

/* ------------------------------------------------------ controls */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--ui);
  font-size: 12.5px;
  padding: 7px 13px;
  border-radius: var(--r-sm);
  border: 1px solid var(--edge);
  background: var(--ridge);
  color: var(--pearl);
  cursor: pointer;
  line-height: 1;
}
.btn:hover { border-color: var(--steel); text-decoration: none; }
.btn.primary { background: var(--lime); border-color: var(--lime); color: var(--on-accent); font-weight: 600; }
.btn.primary:hover { background: #d4f76a; }
.btn.danger { border-color: var(--rust); color: var(--rust); background: transparent; }
.btn.ghost { background: transparent; }
.btn[disabled] { opacity: 0.45; cursor: not-allowed; }

input[type="text"], input[type="password"], input[type="number"],
input[type="date"], input[type="search"], select, textarea {
  font-family: var(--ui);
  font-size: 13px;
  padding: 7px 10px;
  background: var(--carbon);
  border: 1px solid var(--edge);
  border-radius: var(--r-sm);
  color: var(--pearl);
  width: 100%;
}
input::placeholder { color: var(--placeholder); }

.filters {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
  padding: 12px 16px;
  border-bottom: 1px solid var(--ridge);
}
.filters input[type="search"] { max-width: 280px; }
.filters select { max-width: 190px; }
.filters label.check {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--steel);
}
.filters input[type="checkbox"] { width: auto; }

/* -------------------------------------------------------- flash */

.flash { margin-bottom: 14px; }
.flash div {
  padding: 10px 14px;
  border-radius: var(--r-sm);
  border-left: 3px solid var(--lime);
  background: var(--slab);
  font-size: 13px;
  margin-bottom: 6px;
}
.flash div.error { border-left-color: var(--rust); }
.flash div.warning { border-left-color: var(--amber); }

/* ---------------------------------------------------- structure */

.tree-row td:first-child { font-family: var(--mono); }
.indent { display: inline-block; color: var(--steel); opacity: 0.5; }

.pager {
  display: flex;
  gap: 10px;
  align-items: center;
  padding: 12px 16px;
  font-size: 12px;
  color: var(--steel);
  border-top: 1px solid var(--ridge);
}

.matrix td { padding: 6px 10px; }
.matrix label { display: flex; gap: 6px; align-items: center; font-size: 12px; }
.matrix input { width: auto; }

/* ---------------------------------------------------------- auth */

.auth {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}
.auth-card {
  width: 100%;
  max-width: 360px;
  background: var(--slab);
  border: 1px solid var(--ridge);
  border-radius: var(--r-md);
  padding: 28px;
}
.auth-card .wordmark { margin-bottom: 20px; }
.auth-card label {
  display: block;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--steel);
  margin: 14px 0 5px;
}
.auth-card .btn { width: 100%; justify-content: center; margin-top: 18px; }
.auth-note {
  margin-top: 18px;
  font-size: 11px;
  color: var(--steel);
  border-top: 1px solid var(--ridge);
  padding-top: 12px;
  line-height: 1.6;
}

/* --------------------------------------------------------- error */

.errpage { max-width: 460px; margin: 14vh auto; text-align: center; }
.errpage .code {
  font-family: var(--mono);
  font-size: 60px;
  color: var(--lime);
  letter-spacing: -0.03em;
}
.errpage h2 { font-size: 18px; margin: 6px 0 8px; }
.errpage p { color: var(--steel); }

/* ---------------------------------------------------- responsive */

@media (max-width: 900px) {
  .grid.k4 { grid-template-columns: repeat(2, 1fr); }
  .grid.k3, .grid.k2 { grid-template-columns: 1fr; }
  .shell { flex-direction: column; }
  .rail {
    width: 100%;
    flex: none;
    height: auto;
    position: static;
    border-right: none;
    border-bottom: 1px solid var(--ridge);
  }
  .rail-nav { display: flex; overflow-x: auto; padding: 6px; }
  .rail-nav a { border-left: none; border-bottom: 2px solid transparent; white-space: nowrap; }
  .rail-nav a.on { border-left: none; border-bottom-color: var(--lime); }
  .rail-foot { display: none; }
  .content { padding: 14px; }
  .tape-row { grid-template-columns: 1fr auto; }
  .tape-row .where { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}

/* ============================================================
   Light theme — a variable swap. Accents stay; surfaces invert.
   ============================================================ */
[data-theme="light"] {
  --carbon: #eef1f4;
  --slab:   #ffffff;
  --ridge:  #e3e7eb;
  --edge:   #cdd5dc;
  --pearl:  #161a1e;
  --steel:  #5b6772;
  --lime-dim: #6f8f1f;
  --link:   #4f7010;
  --hover:  rgba(0, 0, 0, 0.035);
  --hover-strong: rgba(0, 0, 0, 0.028);
  --line:   rgba(120, 132, 148, 0.30);
  --placeholder: #9aa4ae;
}
[data-theme="light"] .chip.lime { color: var(--link); border-color: var(--lime-dim); }
[data-theme="light"] .btn.primary:hover { background: #bce34a; }
[data-theme="light"] .rail-nav a.on { background: rgba(111, 143, 31, 0.12); }
[data-theme="light"] .wordmark { color: var(--pearl); }
[data-theme="light"] table.data thead th { background: var(--slab); }

/* ------------------------------------------------ nav groups */
.rail-group + .rail-group { margin-top: 4px; }
.rail-group-label {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--steel);
  padding: 12px 18px 5px;
  opacity: 0.75;
}

/* ------------------------------------------------ topbar tools */
.tool { text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 30px;
  padding: 0 12px;
  margin-left: 8px;
  border: 1px solid var(--edge);
  border-radius: var(--r-md);
  background: transparent;
  color: var(--steel);
  font-family: var(--ui);
  font-size: 12.5px;
  cursor: pointer;
}
.tool:hover { color: var(--pearl); border-color: var(--steel); text-decoration: none; }

/* print header sits hidden until we print */
.print-head { display: none; }

/* ============================================================
   Print / PDF — drop the chrome, keep the document.
   "Save as PDF" in the browser print dialog produces the PDF.
   ============================================================ */
@media print {
  :root { --carbon: #ffffff; --slab: #ffffff; --pearl: #000000; --steel: #333333;
          --ridge: #bbbbbb; --edge: #999999; --line: #cccccc; }
  html, body { background: #ffffff; color: #000000; font-size: 11px; }
  .rail, .topbar, .flash, .rail-foot, .tool, .filters, form .btn,
  .btn, .pager, ._pager, nav.rail-nav { display: none !important; }
  .shell { display: block; }
  .main { display: block; }
  .content { padding: 0; }
  .print-head {
    display: flex; align-items: baseline; justify-content: space-between;
    border-bottom: 2px solid #000; padding-bottom: 8px; margin-bottom: 16px;
  }
  .print-head .pw { font-family: var(--mono); font-weight: 700; letter-spacing: 0.18em;
                    text-transform: uppercase; font-size: 13px; }
  .print-head .pt { font-size: 15px; font-weight: 700; }
  .print-head .pd { font-size: 10px; color: #444; }
  .panel, .kpi, .card { border: 1px solid #bbb !important; box-shadow: none !important;
                        break-inside: avoid; }
  table.data { break-inside: auto; }
  table.data thead { display: table-header-group; }        /* repeat header each page */
  table.data tbody tr { break-inside: avoid; }
  table.data thead th { background: #f0f0f0 !important; color: #000 !important; }
  a { color: #000 !important; text-decoration: none !important; }
  .chip { border-color: #999 !important; color: #000 !important; }
  @page { margin: 14mm 12mm; }
}

/* ------------------------------------------------ searchable select */
.ss-wrap { position: relative; }
.ss-input {
  width: 100%;
  background: var(--slab);
  border: 1px solid var(--edge);
  color: var(--pearl);
  border-radius: var(--r-sm);
  padding: 7px 10px;
  font-family: var(--ui);
  font-size: 13px;
}
.ss-input:focus { outline: 2px solid var(--lime); outline-offset: -1px; }
.ss-menu {
  position: absolute; z-index: 40; left: 0; right: 0; top: calc(100% + 4px);
  max-height: 260px; overflow-y: auto;
  background: var(--slab); border: 1px solid var(--edge);
  border-radius: var(--r-md, 10px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
}
.ss-opt { padding: 9px 12px; cursor: pointer; font-size: 13.5px; }
.ss-opt:hover, .ss-opt.on { background: var(--hover); color: var(--lime); }
.ss-none { padding: 9px 12px; color: var(--steel); font-size: 13px; }

/* ---------------------------------------------- searchable select combobox */
.ss-wrap { position: relative; }
.ss-input {
  width: 100%;
  background: var(--slab);
  border: 1px solid var(--edge);
  color: var(--pearl);
  border-radius: var(--r-sm);
  padding: 7px 10px;
  font-family: var(--ui);
  font-size: 13px;
}
.ss-input:focus { outline: 2px solid var(--lime); outline-offset: -1px; }
.ss-menu {
  position: absolute; left: 0; right: 0; top: calc(100% + 4px); z-index: 40;
  max-height: 280px; overflow-y: auto;
  background: var(--slab); border: 1px solid var(--edge);
  border-radius: var(--r-md, 10px); box-shadow: 0 12px 30px rgba(0,0,0,.35);
}
.ss-opt { padding: 9px 12px; cursor: pointer; font-size: 13px; }
.ss-opt:hover, .ss-opt.on { background: var(--hover); color: var(--lime); }
.ss-empty { padding: 9px 12px; color: var(--steel); font-size: 13px; }

.btn.small { padding: 5px 10px; font-size: 12px; }

/* -------------------------------------------------- category tabs (items) */
.cat-tabs { display: flex; flex-wrap: wrap; gap: 6px; padding: 12px 16px 0; }
.cat-tab {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 7px 14px; border-radius: 999px; font-size: 13px;
  background: var(--slab); border: 1px solid var(--edge); color: var(--steel);
  text-decoration: none; transition: all .12s;
}
.cat-tab:hover { color: var(--pearl); border-color: var(--ridge); }
.cat-tab.on { background: var(--lime); border-color: var(--lime); color: var(--on-accent, #10130f); font-weight: 600; }
.cat-tab .cat-count {
  font-family: var(--mono); font-size: 11px; padding: 1px 7px; border-radius: 999px;
  background: rgba(0,0,0,.18);
}
.cat-tab.on .cat-count { background: rgba(0,0,0,.15); }

.thumb-empty { display:inline-block; width:38px; height:38px; border-radius:6px;
  border:1px dashed var(--edge); background:var(--slab); }


/* ---------------------------------------------- alignment polish (#8) */
input[type="text"], input[type="password"], input[type="number"],
input[type="date"], input[type="search"], input[type="email"],
select, textarea, .ss-input {
  box-sizing: border-box;
  min-height: 38px;
  line-height: 1.3;
}
textarea { min-height: 76px; }
.btn { box-sizing: border-box; min-height: 38px; justify-content: center; }
.btn.small { min-height: 30px; padding: 5px 10px; }
/* form grids: fields line up on the same baseline even when heights differ */
.grid { align-items: start; }
.grid > div { display: flex; flex-direction: column; }
.grid > div .eyebrow { margin-bottom: 5px; }
.grid > div > input, .grid > div > select, .grid > div > .ss-wrap { margin-top: auto; }
/* inline table-cell forms stay centred */
table.data td form { align-items: center; }
/* label above every field gets consistent spacing */
label.eyebrow { display: block; margin-bottom: 5px; }


/* header fits on small screens: keep the key buttons, drop the extras */
@media (max-width: 720px) {
  .topbar { gap: 8px; padding: 0 12px; }
  .topbar h1 { font-size: 14px; }
  .topbar .clock { display: none; }
  .topbar .who .role { display: none; }
  .topbar #printBtn { display: none; }
}