/* SteelKont UX system — shared ergonomic layer for long operator sessions. */
:root {
  --bg: #0f1416;
  --sidebar: #141a1d;
  --panel: #192125;
  --panel-strong: #202a2f;
  --surface-raised: #242f34;
  --line: #344249;
  --line-soft: #29363c;
  --text: #f3f6f7;
  --muted: #a5b2b8;
  --muted-strong: #c4cdd1;
  --accent: #df6b36;
  --accent-hover: #ef7b45;
  --accent-soft: #6a3d2b;
  --focus: #ff9b70;
  --warning: #d7ad55;
  --critical: #df6767;
  --ok: #70b18b;
  --sidebar-width: 248px;
  --content-gutter: clamp(20px, 2.2vw, 40px);
  --radius-panel: 12px;
  --radius-control: 7px;
  --shadow-raised: 0 16px 36px rgb(2 7 9 / 18%);
  --transition-fast: 160ms ease;
  font-family: "Segoe UI Variable", "Aptos", "Segoe UI", Arial, sans-serif;
  font-size: 16px;
  font-synthesis: none;
}

html { scrollbar-color: #53636b #141a1d; }
body {
  min-width: 320px;
  overflow-x: clip;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
body::before {
  position: fixed;
  z-index: -1;
  inset: 0;
  pointer-events: none;
  background-image: radial-gradient(circle at 80% -20%, rgb(223 107 54 / 5%), transparent 32rem);
  content: "";
}
::selection { background: var(--accent); color: #111517; }
[hidden] { display: none !important; }

.skip-link {
  position: fixed;
  z-index: 100;
  inset-block-start: 10px;
  inset-inline-start: 12px;
  padding: 10px 14px;
  border-radius: var(--radius-control);
  background: var(--text);
  color: var(--bg);
  font-weight: 750;
  text-decoration: none;
  transform: translateY(-160%);
  transition: transform var(--transition-fast);
}
.skip-link:focus { transform: translateY(0); }

:where(a, button, input, select, textarea, summary):focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}
:where(button, input, select, textarea) { font: inherit; }
:where(input, select, textarea) { color-scheme: dark; }
:where(input, select, textarea)::placeholder { color: #718087; opacity: 1; }

.sidebar {
  width: var(--sidebar-width);
  padding: 26px 18px 20px;
  border-color: var(--line-soft);
  box-shadow: 10px 0 34px rgb(2 7 9 / 10%);
}
.brand { min-height: 40px; padding-inline: 10px; font-size: 15px; letter-spacing: .11em; }
.brand-mark { width: 28px; height: 28px; }
.sidebar nav { gap: 4px; margin-top: 38px; }
.sidebar nav a {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 42px;
  padding: 9px 12px 9px 16px;
  border-radius: 7px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.25;
  transition: background-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}
.sidebar nav a::before {
  position: absolute;
  inset-block: 10px;
  inset-inline-start: 0;
  width: 3px;
  border-radius: 2px;
  background: transparent;
  content: "";
}
.sidebar nav a:hover { background: rgb(255 255 255 / 4%); color: var(--text); transform: translateX(2px); }
.sidebar nav a.active { background: var(--panel-strong); color: var(--text); }
.sidebar nav a.active::before { background: var(--accent); }
.sidebar-source { border-color: var(--line-soft); background: rgb(15 20 22 / 48%); font-size: 11px; }

body:not(.login-page) main {
  min-width: 0;
  margin-inline-start: var(--sidebar-width);
  padding-inline: var(--content-gutter);
  padding-block-end: 52px;
}
main:focus { outline: none; }
.topbar {
  min-height: 92px;
  gap: 28px;
  border-color: var(--line-soft);
}
.context, .eyebrow {
  color: #91a6af;
  font-size: 11px;
  font-weight: 750;
  letter-spacing: .105em;
}
h1 { font-size: clamp(26px, 2.2vw, 34px); line-height: 1.08; letter-spacing: -.035em; text-wrap: balance; }
h2, h3 { text-wrap: balance; }
.topbar-meta { gap: 12px; font-size: 11px; }
.fixture-badge { padding: 5px 8px; border-radius: 5px; letter-spacing: .025em; }
.logout-form button { min-height: 36px; padding-inline: 12px; transition: border-color var(--transition-fast), color var(--transition-fast), background var(--transition-fast); }
.logout-form button:hover { background: var(--panel); }

.workspace-intro, .page-intro {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, .65fr);
  gap: clamp(28px, 5vw, 84px);
  align-items: end;
  padding-block: 30px 24px;
}
.workspace-intro h2 { max-width: 24ch; font-size: clamp(28px, 3vw, 40px); line-height: 1.08; letter-spacing: -.04em; }
.workspace-intro > p { max-width: 54ch; margin: 0; color: var(--muted); font-size: 15px; line-height: 1.6; text-wrap: pretty; }

.panel {
  border-color: var(--line-soft);
  border-radius: var(--radius-panel);
  box-shadow: 0 1px 0 rgb(255 255 255 / 2%);
}
.panel-header {
  min-height: 76px;
  padding: 18px 20px 17px;
  border-color: var(--line-soft);
}
.panel-header h2 { font-size: 17px; line-height: 1.25; letter-spacing: -.015em; }
.panel-header p { max-width: 68ch; color: var(--muted); font-size: 12px; line-height: 1.5; text-wrap: pretty; }
.section-heading { margin-block: 34px 16px; }
.section-heading h2 { font-size: clamp(22px, 2vw, 28px); line-height: 1.15; }
.section-heading > p { max-width: 58ch; color: var(--muted); line-height: 1.55; text-align: end; }

.kpi-grid, .route-kpis, .reference-kpis, .ops-kpis { gap: 10px; }
.kpi, .route-kpis article, .reference-kpis article, .ops-kpis article {
  min-height: 118px;
  padding: 17px 18px;
  border-color: var(--line-soft);
  border-radius: 10px;
  box-shadow: none;
}
.kpi-label, .route-kpis span, .reference-kpis span, .ops-kpis span { min-height: 0; color: var(--muted); font-size: 11px; letter-spacing: .035em; }
.kpi strong, .route-kpis strong, .reference-kpis strong, .ops-kpis strong, .history-summary strong {
  font-variant-numeric: tabular-nums;
}
.kpi p, .route-kpis small, .reference-kpis small { font-size: 11px; line-height: 1.45; }

:where(.filters, .route-filters, .reference-filters, .history-filter, .planning-filters) label,
:where(.inventory-search, .equipment-search, .people-list-search, .employee-search) {
  color: var(--muted);
  font-size: 11px;
  letter-spacing: .04em;
}
:where(input:not([type="checkbox"]):not([type="radio"]), select, textarea) {
  min-height: 42px;
  border-color: var(--line);
  border-radius: var(--radius-control);
  background: #141b1e;
  color: var(--text);
  font-size: 14px;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}
:where(input:not([type="checkbox"]):not([type="radio"]), select, textarea):hover { border-color: #56666e; }
:where(input:not([type="checkbox"]):not([type="radio"]), select, textarea):focus-visible {
  border-color: var(--focus);
  outline: none;
  box-shadow: 0 0 0 3px rgb(223 107 54 / 17%);
}
:where(button, .button, .button-secondary, .purchase-order-download, .product-document-open, .text-action) {
  transition: color var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast), transform var(--transition-fast);
}
:where(button, .button, .button-secondary, .purchase-order-download, .product-document-open):active { transform: translateY(1px); }

.table-scroll { max-width: 100%; overflow-x: hidden; scrollbar-gutter: stable; overscroll-behavior: contain; }
table { font-variant-numeric: tabular-nums; }
thead th {
  height: 42px;
  padding: 10px 16px;
  border-color: var(--line-soft);
  background: var(--panel-strong);
  color: #9fb0b7;
  font-size: 10px;
  letter-spacing: .055em;
}
tbody td { min-height: 48px; padding: 12px 16px; border-color: var(--line-soft); font-size: 12px; line-height: 1.45; }
tbody tr { transition: background-color var(--transition-fast); }
tbody tr:hover { background: rgb(255 255 255 / 2.5%); }
td strong { color: var(--text); }
td small { color: var(--muted); line-height: 1.4; }

.status { border-radius: 4px; letter-spacing: .015em; }
.status-normal { background: #183928; color: #91ddb0; }
.status-warning { background: #443617; color: #f0ca70; }
.status-critical { background: #4b2527; color: #ff999d; }

dialog { box-shadow: var(--shadow-raised); overscroll-behavior: contain; }
dialog::backdrop { background: rgb(3 7 9 / 78%); backdrop-filter: blur(4px); }
summary { min-height: 36px; }

/* Page-specific rhythm built on the shared system. */
.dashboard-grid { gap: 14px; margin-top: 14px; }
.bar-chart { height: 270px; }
.line-row { padding-block: 16px; }
.route-section, .reference-section, .warehouse-section { margin-top: 34px; scroll-margin-top: 24px; }
.route-flow-panel, .route-grid, .route-table-panel, .reference-table-panel, .product-documents-panel { margin-top: 14px; }
.route-table-scroll, .reference-table-scroll { max-height: min(62vh, 620px); }
.product-documents-layout { gap: 0; }
.product-document-form { padding: 22px; }
.product-document-card { padding-block: 16px; }

.ops-kpis { margin-bottom: 14px; }
.ops-panel { margin-bottom: 14px; overflow: hidden; }
.ops-panel + .ops-panel { margin-top: 14px; }
.equipment-table-scroll, .maintenance-table-scroll, .people-table-scroll { max-height: min(58vh, 560px); scrollbar-gutter: stable; }
.inventory-table-scroll { max-height: min(62vh, 620px); overflow-x: hidden; overflow-y: auto; scrollbar-gutter: stable; }
.equipment-table-header, .warehouse-table-header, .people-matrix-header { align-items: end; }
.equipment-search, .inventory-search, .people-list-search { width: min(30rem, 42%); }
.people-actions { gap: 14px; margin-top: 14px; }
.people-form { border-color: var(--line-soft); border-radius: var(--radius-panel); }
.people-form header { border-color: var(--line-soft); }
.attendance-controls {
  position: sticky;
  z-index: 8;
  top: 0;
  margin-block: 0 14px;
  padding-block: 14px;
  background: rgb(15 20 22 / 94%);
  backdrop-filter: blur(10px);
}
.attendance-row { min-height: 84px; padding: 14px 16px; border-color: var(--line-soft); }
.history-summary article { min-height: 92px; }
.production-map { gap: 10px; }
.production-node { border-color: var(--line-soft); border-radius: 8px; transition: border-color var(--transition-fast), background var(--transition-fast), transform var(--transition-fast); }
.production-node:hover { transform: translateY(-1px); }
.area-card { padding: clamp(18px, 2vw, 28px); }
.post-list { gap: 6px; }
.post-list section { padding: 12px 14px; border-radius: 6px; }

.planning-toolbar { border-color: var(--line-soft); box-shadow: 0 10px 24px rgb(2 7 9 / 13%); }
.planning-section-nav a { min-height: 38px; display: inline-flex; align-items: center; }
.planning-kpis { gap: 10px; }
.planning-section { scroll-margin-top: 116px; }
.calendar-day { border-color: var(--line-soft); }
.day-inspector { box-shadow: var(--shadow-raised); }
.gantt-order summary { transition: background-color var(--transition-fast); }
.gantt-order summary:hover { background: rgb(255 255 255 / 2.5%); }

.login-page { display: grid; min-height: 100dvh; place-items: center; padding: 24px; }
.login-shell { width: min(100%, 430px); margin: 0; padding: 0; }
.login-card { border-color: var(--line-soft); border-radius: 16px; box-shadow: var(--shadow-raised); }
.login-heading h1 { font-size: 32px; }
.login-form button { min-height: 44px; background: var(--accent); }

@media (max-width: 1120px) {
  .topbar-meta .freshness { display: none; }
  .reference-kpis { grid-template-columns: repeat(3, minmax(140px, 1fr)); }
}

@media (max-width: 900px) {
  .sidebar {
    position: sticky;
    z-index: 30;
    inset: 0;
    width: 100%;
    height: auto;
    min-height: 68px;
    flex-direction: row;
    align-items: center;
    gap: 14px;
    padding: 10px 14px;
    overflow: hidden;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 10px 28px rgb(2 7 9 / 20%);
  }
  .brand { flex: 0 0 auto; padding: 0; }
  .brand > span:last-child { display: none; }
  .sidebar nav { display: flex; flex-wrap: wrap; gap: 4px; margin: 0; }
  .sidebar nav a { min-height: 42px; flex: 1 1 auto; padding-inline: 12px; white-space: normal; }
  .sidebar nav a::before { inset: auto 10px 0; width: auto; height: 3px; }
  .sidebar-source { display: none; }
  body:not(.login-page) main { margin-inline-start: 0; padding-inline: clamp(14px, 3vw, 28px); }
  .topbar { min-height: 82px; }
  .workspace-intro, .page-intro { grid-template-columns: 1fr; gap: 12px; align-items: start; }
  .workspace-intro > p { max-width: 65ch; }
  .planning-toolbar, .attendance-controls { top: 68px; }
  .planning-section { scroll-margin-top: 156px; }
}

@media (max-width: 640px) {
  .sidebar { gap: 8px; padding-inline: 10px; }
  .sidebar nav a { min-height: 40px; padding-inline: 10px; font-size: 12px; }
  body:not(.login-page) main { padding-inline: 12px; }
  .topbar { align-items: flex-start; min-height: 76px; padding-block: 14px; }
  .topbar-meta { gap: 8px; }
  .topbar-meta .fixture-badge, .topbar-meta .freshness, .topbar-meta .current-user { display: none; }
  h1 { font-size: 25px; }
  .workspace-intro h2 { font-size: 28px; }
  .section-heading { align-items: flex-start; flex-direction: column; }
  .section-heading > p { text-align: start; }
  .panel-header { align-items: stretch; flex-direction: column; }
  .reference-kpis { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  :where(input:not([type="checkbox"]):not([type="radio"]), select, textarea) { font-size: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; }
}

@media (forced-colors: active) {
  :where(a, button, input, select, textarea, summary):focus-visible { outline: 2px solid CanvasText; }
}