/* ============================================================================
   Engineering Profile — internal-tool stylesheet
   No web fonts, no framework, no transitions, no animation of any kind.
   Density budget: 13px/1.45 base, 4px spacing unit, 26px table rows.
   Contrast held at >= 7:1 body / >= 4.5:1 meta, in both colour schemes.
   ========================================================================= */

:root {
  --u: 4px;

  --bg:        #eef0f2;
  --surface:   #ffffff;
  --surface-2: #f6f7f8;
  --surface-3: #e9ebee;
  --border:    #c8ccd2;
  --border-str:#9aa1aa;

  --text:      #16191d;
  --text-2:    #4a525c;
  --text-3:    #6b737d;

  --accent:    #14508c;
  --accent-bg: #e4edf7;
  --ok:        #17603a;
  --ok-bg:     #e2f0e8;
  --err:       #a11221;
  --err-bg:    #fbe6e8;
  --warn:      #7a4a04;
  --warn-bg:   #fbeed6;

  --focus:     #14508c;

  --mono: ui-monospace, "Cascadia Mono", "Segoe UI Mono", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:        #14171a;
    --surface:   #1b1f23;
    --surface-2: #21262b;
    --surface-3: #2a3036;
    --border:    #363d45;
    --border-str:#59626c;

    --text:      #eef1f4;
    --text-2:    #b3bcc6;
    --text-3:    #929ca6;

    --accent:    #6fb2f0;
    --accent-bg: #16283b;
    --ok:        #74d3a0;
    --ok-bg:     #14291f;
    --err:       #f79aa5;
    --err-bg:    #331519;
    --warn:      #e8bd72;
    --warn-bg:   #302512;

    --focus:     #6fb2f0;
  }
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font: 13px/1.45 var(--sans);
  color: var(--text);
  background: var(--bg);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

h1, h2, h3, p, dl, dd, ul, figure { margin: 0; }
ul { padding: 0; list-style: none; }

a { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 1px;
}

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute; left: var(--u); top: -100px; z-index: 20;
  background: var(--surface); color: var(--text);
  border: 1px solid var(--border-str);
  padding: calc(var(--u) * 1.5) calc(var(--u) * 3);
}
.skip-link:focus { top: var(--u); }

/* ---------------------------------------------------------------- app bar */

.appbar {
  display: flex;
  align-items: center;
  gap: calc(var(--u) * 6);
  flex-wrap: wrap;
  padding: calc(var(--u) * 1.5) calc(var(--u) * 3);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.appbar__brand { display: flex; align-items: center; gap: calc(var(--u) * 2); }

.appbar__mark {
  font: 600 11px/1 var(--mono);
  letter-spacing: .5px;
  background: var(--text);
  color: var(--surface);
  padding: 5px 6px;
}

.appbar__title { font-weight: 600; font-size: 13px; }

.appbar__meta {
  display: flex;
  gap: calc(var(--u) * 5);
  flex-wrap: wrap;
  margin-left: auto;
}
.appbar__meta > div { display: flex; align-items: baseline; gap: calc(var(--u) * 1.5); }
.appbar__meta dt { font-size: 11px; color: var(--text-3); text-transform: uppercase; letter-spacing: .4px; }
.appbar__meta dd { margin: 0; font-size: 12px; color: var(--text); }

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

.shell {
  display: grid;
  grid-template-columns: 208px minmax(0, 1fr);
  flex: 1;
  min-height: 0;
}

/* ---------------------------------------------------------------- sidenav */

.sidenav {
  background: var(--surface-2);
  border-right: 1px solid var(--border);
  padding: calc(var(--u) * 2) 0;
  display: flex;
  flex-direction: column;
}

.sidenav__group {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: .6px;
  color: var(--text-3);
  padding: calc(var(--u) * 2) calc(var(--u) * 3) var(--u);
}

.sidenav__list a {
  display: block;
  padding: calc(var(--u) * 1.5) calc(var(--u) * 3);
  color: var(--text);
  text-decoration: none;
  border-left: 3px solid transparent;
}
.sidenav__list a:hover { background: var(--surface-3); }
.sidenav__list a[aria-current="page"] {
  background: var(--accent-bg);
  border-left-color: var(--accent);
  color: var(--accent);
  font-weight: 600;
}

.sidenav__foot {
  margin-top: auto;
  padding: calc(var(--u) * 3);
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: var(--u);
  font-size: 12px;
  word-break: break-all;
}

/* ---------------------------------------------------------------- main */

.main {
  padding: calc(var(--u) * 3);
  min-width: 0;
}

.view { display: flex; flex-direction: column; gap: calc(var(--u) * 3); }
.view[hidden] { display: none; }

.viewhead {
  display: flex;
  align-items: baseline;
  gap: calc(var(--u) * 3);
  flex-wrap: wrap;
  border-bottom: 1px solid var(--border);
  padding-bottom: calc(var(--u) * 2);
}
.viewhead h1 { font-size: 16px; font-weight: 600; letter-spacing: -.1px; }
.viewhead h1:focus { outline: none; }
.viewhead h1:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
.viewhead__sub { font-size: 12px; color: var(--text-2); }

.cols {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: calc(var(--u) * 3);
  align-items: start;
}
.cols--form { grid-template-columns: minmax(0, 2.2fr) minmax(0, 1fr); }

/* ---------------------------------------------------------------- panels */

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
}

.panel__head {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .5px;
  color: var(--text-2);
  background: var(--surface-2);
  padding: calc(var(--u) * 1.5) calc(var(--u) * 3);
  border-bottom: 1px solid var(--border);
}

.panel__body { padding: calc(var(--u) * 3); }
.panel__body--flush { padding: 0; }

.panel__foot {
  border-top: 1px solid var(--border);
  padding: calc(var(--u) * 1.5) calc(var(--u) * 3);
  font-size: 12px;
  color: var(--text-2);
  background: var(--surface-2);
}

.prose p + p { margin-top: calc(var(--u) * 2); }
.prose { color: var(--text); max-width: 68ch; }

.list { display: flex; flex-direction: column; gap: var(--u); }
.list li { padding-left: calc(var(--u) * 3); position: relative; color: var(--text); }
.list li::before {
  content: "–";
  position: absolute; left: 0;
  color: var(--text-3);
}

.lead-ok, .lead-warn {
  font-weight: 600;
  font-size: 12px;
  margin: calc(var(--u) * 2) 0 var(--u);
}
.lead-ok:first-child, .lead-warn:first-child { margin-top: 0; }
.lead-ok { color: var(--ok); }
.lead-warn { color: var(--warn); }

.rule { border: 0; border-top: 1px solid var(--border); margin: calc(var(--u) * 3) 0; }

.note { font-size: 12px; color: var(--text-2); }

/* ---------------------------------------------------------------- stats */

.grid--stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 0;
  border: 1px solid var(--border);
  background: var(--border);
}
.stat {
  background: var(--surface);
  padding: calc(var(--u) * 2) calc(var(--u) * 3);
  display: flex;
  flex-direction: column;
  gap: 2px;
  outline: 1px solid var(--border);
}
.stat__k { font-size: 11px; text-transform: uppercase; letter-spacing: .4px; color: var(--text-3); }
.stat__v { font-size: 14px; font-weight: 600; }

/* ---------------------------------------------------------------- kv grid */

.kvgrid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--u) calc(var(--u) * 4); }
.kvgrid--1 { grid-template-columns: 1fr; }
.kvgrid > div {
  display: grid;
  grid-template-columns: 118px minmax(0, 1fr);
  gap: calc(var(--u) * 2);
  padding: 3px 0;
  border-bottom: 1px solid var(--surface-3);
}
.kvgrid dt { color: var(--text-3); font-size: 12px; }
.kvgrid dd { margin: 0; }

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

.tablewrap { overflow-x: auto; }

.table { width: 100%; border-collapse: collapse; font-size: 12px; }

.table caption { text-align: left; }

.table th, .table td {
  text-align: left;
  padding: calc(var(--u) * 1.25) calc(var(--u) * 2);
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.table thead th {
  background: var(--surface-2);
  color: var(--text-2);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .4px;
  font-weight: 600;
  white-space: nowrap;
  padding: 0;
  border-bottom: 1px solid var(--border-str);
  position: sticky;
  top: 0;
  z-index: 1;
}
.table thead th:not(:has(button)) { padding: calc(var(--u) * 1.25) calc(var(--u) * 2); }

.table tbody th { font-weight: 600; }
.table tbody tr:last-child th,
.table tbody tr:last-child td { border-bottom: 0; }

.table .num { text-align: right; font-variant-numeric: tabular-nums; font-family: var(--mono); }

.table--kv tbody th { white-space: nowrap; color: var(--text-2); font-weight: 500; }

/* sortable headers */
.table--data thead th button {
  all: unset;
  box-sizing: border-box;
  display: flex;
  align-items: center;
  gap: var(--u);
  width: 100%;
  padding: calc(var(--u) * 1.25) calc(var(--u) * 2);
  cursor: pointer;
  font: inherit;
  color: inherit;
  text-transform: inherit;
  letter-spacing: inherit;
}
.table--data thead th.num button { justify-content: flex-end; }
.table--data thead th button:hover { background: var(--surface-3); color: var(--text); }
.table--data thead th button:focus-visible { outline: 2px solid var(--focus); outline-offset: -2px; }

.sortmark { width: 8px; color: var(--text-3); font-size: 9px; }
.sortmark::after { content: "\2195"; opacity: .45; }
th[aria-sort="ascending"] .sortmark::after { content: "\25B2"; opacity: 1; }
th[aria-sort="descending"] .sortmark::after { content: "\25BC"; opacity: 1; }
th[aria-sort] { color: var(--text); }

#roles-table tbody tr { cursor: pointer; }
#roles-table tbody tr:hover { background: var(--surface-2); }
#roles-table tbody tr[aria-current="true"] {
  background: var(--accent-bg);
  box-shadow: inset 3px 0 0 var(--accent);
}
#roles-table tbody tr:focus-visible { outline: 2px solid var(--focus); outline-offset: -2px; }

.empty-row td { color: var(--text-2); font-style: italic; }

/* ---------------------------------------------------------------- toolbar */

.toolbar {
  display: flex;
  align-items: center;
  gap: calc(var(--u) * 3);
  padding: calc(var(--u) * 1.5) calc(var(--u) * 2);
  background: var(--surface);
  border: 1px solid var(--border);
}
.toolbar__status { font-size: 12px; color: var(--text-2); font-variant-numeric: tabular-nums; }
.toolbar .btn { margin-left: auto; }

.kbd {
  font: 11px/1 var(--mono);
  border: 1px solid var(--border-str);
  border-bottom-width: 2px;
  padding: 3px 5px;
  color: var(--text-3);
  background: var(--surface-2);
}

/* ------------------------------------------------------------ masterdetail */

.masterdetail {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: calc(var(--u) * 3);
  align-items: start;
}
.panel--detail { position: sticky; top: calc(var(--u) * 3); }
.panel--detail .panel__body { max-height: 62vh; overflow-y: auto; }
#detail-body:focus { outline: none; }

.detail-meta {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 2px calc(var(--u) * 2);
  font-size: 12px;
  margin-bottom: calc(var(--u) * 3);
  padding-bottom: calc(var(--u) * 2);
  border-bottom: 1px solid var(--border);
}
.detail-meta dt { color: var(--text-3); }
.detail-meta dd { margin: 0; }

.detail-sub { font-size: 12px; color: var(--text-2); margin-bottom: calc(var(--u) * 2); }
.detail-h { font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: .5px; color: var(--text-2); margin: calc(var(--u) * 3) 0 var(--u); }

/* ---------------------------------------------------------------- tags */

.tag {
  display: inline-block;
  font: 500 11px/1.3 var(--sans);
  padding: 2px 6px;
  border: 1px solid var(--border-str);
  background: var(--surface-2);
  color: var(--text-2);
  white-space: nowrap;
}
.tag--ok  { color: var(--ok);  background: var(--ok-bg);  border-color: var(--ok); }
.tag--muted { color: var(--text-3); }

/* ---------------------------------------------------------------- forms */

.formgrid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: calc(var(--u) * 2) calc(var(--u) * 4);
}
.field--wide { grid-column: 1 / -1; }

.field { display: flex; flex-direction: column; gap: 3px; min-width: 0; }

.field > label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text);
}
.opt { font-weight: 400; color: var(--text-3); }
.req { color: var(--err); font-weight: 700; }

input[type="text"], input[type="email"], input[type="tel"], input[type="date"],
input[type="number"], input[type="search"], select, textarea {
  font: 13px/1.4 var(--sans);
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border-str);
  padding: 5px 7px;
  width: 100%;
  min-width: 0;
  border-radius: 0;
}
textarea { resize: vertical; min-height: 76px; }
select { height: 28px; }

input:disabled, select:disabled, textarea:disabled {
  background: var(--surface-3);
  color: var(--text-3);
  border-color: var(--border);
  cursor: not-allowed;
}

input[aria-invalid="true"], select[aria-invalid="true"], textarea[aria-invalid="true"] {
  border-color: var(--err);
  border-left-width: 3px;
  background: var(--err-bg);
}
.field--ok input, .field--ok select, .field--ok textarea {
  border-color: var(--ok);
  border-left-width: 3px;
}

.msg { font-size: 11px; line-height: 1.35; }
.msg--hint { color: var(--text-3); }
.msg--err  { color: var(--err); font-weight: 600; }
.msg--err::before { content: "\26A0 "; }
.msgrow { display: flex; justify-content: space-between; gap: calc(var(--u) * 2); }
.msg--count { font-variant-numeric: tabular-nums; white-space: nowrap; }

.field--ok > label::after {
  content: " \2713";
  color: var(--ok);
  font-weight: 700;
}

.field--inline { flex-direction: row; align-items: center; gap: calc(var(--u) * 2); }
.field--inline label { white-space: nowrap; }
.field--inline input { width: 240px; }

.check { display: flex; align-items: flex-start; gap: calc(var(--u) * 2); }
.check input { width: 14px; height: 14px; margin: 2px 0 0; flex: none; accent-color: var(--accent); }
.check label { font-size: 12px; font-weight: 400; color: var(--text); }
.field--check[data-invalid="true"] .check { border-left: 3px solid var(--err); padding-left: calc(var(--u) * 2); }

.formactions {
  display: flex;
  align-items: center;
  gap: calc(var(--u) * 2);
  margin-top: calc(var(--u) * 4);
  padding-top: calc(var(--u) * 3);
  border-top: 1px solid var(--border);
}
.formactions__note { font-size: 12px; color: var(--text-2); margin-left: auto; font-variant-numeric: tabular-nums; }

/* ---------------------------------------------------------------- buttons */

.btn {
  font: 500 12px/1 var(--sans);
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--border-str);
  padding: 7px 12px;
  cursor: pointer;
  border-radius: 0;
}
.btn:hover { background: var(--surface-3); }
.btn:active { background: var(--border); }
.btn--primary { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600; }
.btn--primary:hover { filter: brightness(1.12); }
.btn--ghost { background: transparent; }
.btn:disabled { opacity: .55; cursor: not-allowed; filter: none; }

@media (prefers-color-scheme: dark) {
  .btn--primary { color: #0d1117; }
}

/* ---------------------------------------------------------------- alerts */

.alert {
  border: 1px solid var(--border-str);
  border-left-width: 4px;
  padding: calc(var(--u) * 2) calc(var(--u) * 3);
  margin-bottom: calc(var(--u) * 3);
  font-size: 12px;
}
.alert h3 { font-size: 12px; font-weight: 700; margin-bottom: var(--u); }
.alert ul { display: flex; flex-direction: column; gap: 2px; margin-top: var(--u); }
.alert--err { background: var(--err-bg); border-color: var(--err); color: var(--err); }
.alert--err a { color: var(--err); }
.alert--ok  { background: var(--ok-bg);  border-color: var(--ok);  color: var(--ok); }

/* ---------------------------------------------------------------- status */

.statusbar {
  display: flex;
  align-items: center;
  gap: calc(var(--u) * 2);
  padding: calc(var(--u) * 1.25) calc(var(--u) * 3);
  background: var(--surface-2);
  border-top: 1px solid var(--border);
  font-size: 11px;
  color: var(--text-2);
}
.statusbar__sep { color: var(--border-str); }
.statusbar__spacer { margin-left: auto; }
.statusbar__stamp { font-family: var(--mono); }

/* ---------------------------------------------------------------- responsive
   Sidebar collapses to a horizontal tab strip — not a hamburger. Primary
   navigation stays visible at every breakpoint. */

@media (max-width: 1100px) {
  .cols, .cols--form { grid-template-columns: minmax(0, 1fr); }
  .masterdetail { grid-template-columns: minmax(0, 1fr); }
  .panel--detail { position: static; }
  .panel--detail .panel__body { max-height: none; }
}

@media (max-width: 900px) {
  .shell { grid-template-columns: minmax(0, 1fr); }
  .sidenav {
    flex-direction: row;
    align-items: center;
    overflow-x: auto;
    border-right: 0;
    border-bottom: 1px solid var(--border);
    padding: 0;
  }
  .sidenav__group { display: none; }
  .sidenav__list { display: flex; }
  .sidenav__list a {
    border-left: 0;
    border-bottom: 3px solid transparent;
    white-space: nowrap;
    padding: calc(var(--u) * 2) calc(var(--u) * 3);
  }
  .sidenav__list a[aria-current="page"] { border-bottom-color: var(--accent); }
  .sidenav__foot { display: none; }
  .appbar__meta { gap: calc(var(--u) * 3); }
}

@media (max-width: 620px) {
  .formgrid { grid-template-columns: minmax(0, 1fr); }
  .kvgrid { grid-template-columns: 1fr; }
  .appbar { gap: calc(var(--u) * 2); }
  .appbar__meta { margin-left: 0; }
  .toolbar { flex-wrap: wrap; }
  .field--inline input { width: 100%; }
  .formactions { flex-wrap: wrap; }
  .formactions__note { margin-left: 0; width: 100%; }
}

@media print {
  .sidenav, .toolbar, .statusbar, .skip-link, #view-contact { display: none !important; }
  .view[hidden] { display: block !important; }
  .panel { break-inside: avoid; }
}