@font-face {
  font-family: "IBM Plex Sans Arabic";
  src: url("/assets/sama_construction/fonts/IBMPlexSansArabic-Regular.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Sans Arabic";
  src: url("/assets/sama_construction/fonts/IBMPlexSansArabic-SemiBold.woff2") format("woff2");
  font-weight: 600 800;
  font-display: swap;
}
:root {
  --eng-bg: #edf1f3;
  --eng-surface: #ffffff;
  --eng-surface-2: #f5f7f8;
  --eng-line: #c8d2d7;
  --eng-text: #12232b;
  --eng-muted: #5f727b;
  --eng-teal: #0e766e;
  --eng-teal-soft: #dcefeb;
  --eng-amber: #a86b08;
  --eng-green: #168451;
  --eng-red: #b84135;
  color-scheme: light;
}
* { box-sizing: border-box; }
html { min-width: 320px; background: var(--eng-bg); scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    linear-gradient(rgba(18,35,43,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(18,35,43,.035) 1px, transparent 1px),
    var(--eng-bg);
  background-size: 32px 32px;
  color: var(--eng-text);
  font-family: Inter, "Segoe UI", system-ui, sans-serif;
}
[dir="rtl"] body { font-family: "IBM Plex Sans Arabic", Tahoma, sans-serif; }
.web-footer, .navbar { display: none !important; }
.container { max-width: none; padding: 0; }
.page_content { margin: 0; }
button, a { font: inherit; }
a { color: inherit; }
.engineering-shell h1,
.engineering-shell h2,
.engineering-shell h3,
.engineering-shell strong { color: var(--eng-text); }
.engineering-shell { width: min(1520px, 100%); min-height: 100vh; margin: 0 auto; padding: 0 24px 40px; }
.engineering-topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  min-height: 68px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid var(--eng-line);
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(14px);
}
.engineering-brand { display: flex; align-items: center; gap: 11px; text-decoration: none; }
.engineering-brand > span:last-child { display: grid; }
.engineering-brand small { color: var(--eng-muted); font-size: .72rem; }
.brand-mark { display: grid; width: 36px; height: 36px; place-items: center; border: 1px solid var(--eng-teal); color: var(--eng-teal); font-weight: 800; }
.engineering-topbar nav { display: flex; align-items: center; gap: 6px; }
.engineering-topbar nav a, #engineering-language { padding: 10px 12px; border: 0; background: transparent; color: #334b55; text-decoration: none; cursor: pointer; }
.engineering-topbar nav a:hover, #engineering-language:hover { background: var(--eng-surface-2); color: #0c272f; }
.status-rail { display: flex; min-height: 58px; align-items: center; gap: clamp(20px,4vw,60px); border-bottom: 1px solid var(--eng-line); }
.status-rail > div { display: grid; gap: 2px; }
.status-rail span { color: var(--eng-muted); font-size: .65rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.status-rail strong { font-size: .82rem; }
.status-rail .connection { display: flex; margin-inline-start: auto; align-items: center; gap: 8px; color: #176940; }
.connection i { width: 8px; height: 8px; border-radius: 50%; background: var(--eng-green); box-shadow: 0 0 0 4px rgba(85,201,139,.12); }
.engineering-heading { display: flex; padding: 42px 0 28px; align-items: end; justify-content: space-between; gap: 32px; }
.engineering-heading > div { max-width: 980px; }
.engineering-kicker { margin: 0 0 7px; color: var(--eng-teal); font-size: .7rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
[dir="rtl"] .engineering-kicker { letter-spacing: 0; }
.engineering-heading h1 {
  max-width: 980px;
  margin: 0 0 12px;
  color: #12232b;
  font-size: clamp(2.4rem,5vw,5rem);
  line-height: .98;
  letter-spacing: -.045em;
}
[dir="rtl"] .engineering-heading h1 { line-height: 1.18; letter-spacing: 0; }
.engineering-heading p:not(.engineering-kicker), .integration-heading > p { max-width: 850px; margin: 0; color: var(--eng-muted); line-height: 1.6; }
.truth-badge { flex: 0 0 auto; padding: 8px 11px; border: 1px solid #d2ae69; background: #fff7e7; color: #76500c; font-size: .75rem; font-weight: 750; }
.engineering-metrics { display: grid; grid-template-columns: repeat(4,1fr); border: 1px solid var(--eng-line); background: var(--eng-line); gap: 1px; }
.engineering-metrics article { display: flex; min-height: 78px; padding: 14px 18px; align-items: center; justify-content: space-between; gap: 12px; background: var(--eng-surface); }
.engineering-metrics strong { font-size: 1.75rem; }
.engineering-metrics span { max-width: 130px; color: var(--eng-muted); font-size: .78rem; text-align: end; }
.engineering-workspace { display: grid; grid-template-columns: minmax(210px,.7fr) minmax(480px,1.8fr) minmax(280px,1fr); gap: 12px; margin-top: 12px; }
.work-panel { min-width: 0; padding: 18px; border: 1px solid var(--eng-line); background: rgba(255,255,255,.97); }
.panel-title { margin-bottom: 15px; }
.panel-title.inline { display: flex; align-items: end; justify-content: space-between; gap: 16px; }
.panel-title h2, .integration-heading h2, .engineering-footer-cta h2 { margin: 0; font-size: 1.3rem; }
.scale { color: var(--eng-muted); font-family: ui-monospace, monospace; font-size: .72rem; }
.revision-card, .element-card { width: 100%; border: 1px solid var(--eng-line); background: var(--eng-surface-2); color: var(--eng-text); text-align: start; cursor: pointer; }
.revision-card { display: grid; padding: 14px; gap: 10px; }
.revision-card > span { display: flex; align-items: center; justify-content: space-between; }
.revision-card b { width: fit-content; padding: 3px 7px; border-radius: 999px; background: var(--eng-teal-soft); color: #0b655f; font-size: .65rem; }
.revision-card p { margin: 0; font-weight: 700; }
.revision-card small { color: var(--eng-muted); }
.revision-card.active, .element-card.active { border-color: var(--eng-teal); box-shadow: inset 3px 0 0 var(--eng-teal); }
[dir="rtl"] .revision-card.active, [dir="rtl"] .element-card.active { box-shadow: inset -3px 0 0 var(--eng-teal); }
.handover-note { margin-top: 14px; padding: 12px; border-inline-start: 3px solid var(--eng-amber); background: #fff8e9; }
.handover-note p { margin: 5px 0 0; color: var(--eng-muted); font-size: .78rem; line-height: 1.5; }
.panel-link { display: inline-block; margin-top: 16px; color: #0b655f; font-size: .8rem; }
.plan-canvas { overflow: hidden; border: 1px solid var(--eng-line); background: #f7fafb; }
.plan-canvas svg { display: block; width: 100%; max-height: 430px; }
.plan-canvas text { fill: #5f727b; font: .24px ui-monospace, monospace; }
.slab { fill: rgba(14,118,110,.08); stroke: #5e938e; stroke-width: .05; }
.wall { stroke: #263c45; stroke-width: .16; stroke-linecap: square; }
.wall.muted { stroke: #82939a; }
.door { fill: none; stroke: var(--eng-amber); stroke-width: .09; }
[data-element-id] { transition: filter .15s ease, stroke-width .15s ease; }
[data-element-id].selected { filter: drop-shadow(0 0 .12px rgba(14,118,110,.4)); stroke: #0e766e; stroke-width: .23; }
.plan-legend { display: flex; padding: 10px 12px; gap: 18px; border-top: 1px solid var(--eng-line); flex-wrap: wrap; color: var(--eng-muted); font-size: .68rem; }
.plan-legend span { display: flex; align-items: center; gap: 6px; }
.plan-legend i { width: 18px; height: 3px; background: #263c45; }
.plan-legend .legend-slab { background: #5e938e; }
.plan-legend .legend-door { background: var(--eng-amber); }
.canvas-note { margin: 12px 0 0; color: var(--eng-muted); font-size: .78rem; line-height: 1.5; }
.element-list { display: grid; gap: 7px; max-height: 332px; overflow: auto; }
.element-card { display: grid; grid-template-columns: 1fr auto; gap: 3px 10px; padding: 11px; }
.element-card span { display: grid; }
.element-card small { color: var(--eng-muted); font-size: .67rem; }
.element-card > small { grid-column: 1/-1; }
.element-card strong { font-size: .76rem; }
.selected-summary { display: grid; margin-top: 12px; padding: 12px; border: 1px solid var(--eng-line); background: #eef5f4; gap: 3px; }
.selected-summary span, .selected-summary small { color: var(--eng-muted); font-size: .68rem; }
.primary-action { display: flex; min-height: 44px; margin-top: 12px; align-items: center; justify-content: center; background: var(--eng-teal); color: #ffffff; font-weight: 800; text-decoration: none; }
.integration-section { margin-top: 46px; padding-top: 34px; border-top: 1px solid var(--eng-line); }
.integration-heading { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: end; }
.integration-heading h2 { font-size: clamp(1.8rem,3vw,3rem); }
.technology-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 10px; margin-top: 24px; }
.technology-grid article { min-height: 180px; padding: 18px; border: 1px solid var(--eng-line); background: var(--eng-surface); }
.technology-grid h3 { margin: 30px 0 4px; }
.technology-grid > article > strong { color: var(--eng-muted); font-family: ui-monospace, monospace; font-size: .76rem; }
.technology-grid p { color: var(--eng-muted); font-size: .78rem; line-height: 1.5; }
.technology-status { padding: 4px 7px; border-radius: 999px; font-size: .65rem; font-weight: 800; }
.technology-status.implemented { background: #dff3e8; color: #176940; }
.technology-status.authoring { background: #fff0cf; color: #76500c; }
.engineering-footer-cta { display: flex; margin-top: 46px; padding: 34px; align-items: center; justify-content: space-between; gap: 28px; border: 1px solid #8ebcb7; background: #e6f3f1; }
.engineering-footer-cta a { flex: 0 0 auto; padding: 13px 17px; background: var(--eng-text); color: #ffffff; font-weight: 800; text-decoration: none; }
button:focus-visible, a:focus-visible { outline: 3px solid var(--eng-amber); outline-offset: 2px; }
@media (max-width: 1050px) {
  .engineering-workspace { grid-template-columns: 220px 1fr; }
  .element-panel { grid-column: 1/-1; }
  .element-list { grid-template-columns: repeat(2,1fr); max-height: none; }
  .technology-grid { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 720px) {
  .engineering-shell { padding-inline: 10px; }
  .engineering-topbar { align-items: flex-start; padding: 10px 0; }
  .engineering-brand small { display: none; }
  .engineering-topbar nav { max-width: 62%; overflow-x: auto; }
  .engineering-topbar nav a { display: none; }
  .status-rail { overflow-x: auto; }
  .status-rail > div { min-width: 110px; }
  .status-rail .connection { min-width: 190px; }
  .engineering-heading, .engineering-footer-cta { align-items: flex-start; flex-direction: column; }
  .engineering-heading h1 { font-size: clamp(2.35rem,12vw,3.8rem); }
  .engineering-metrics { grid-template-columns: 1fr 1fr; }
  .engineering-workspace { grid-template-columns: 1fr; }
  .element-panel { grid-column: auto; }
  .revision-panel { order: 2; }
  .drawing-panel { order: 1; }
  .element-panel { order: 3; }
  .integration-heading { grid-template-columns: 1fr; gap: 16px; }
}
@media (max-width: 480px) {
  .engineering-metrics, .technology-grid, .element-list { grid-template-columns: 1fr; }
  .engineering-metrics article { min-height: 60px; }
  .work-panel { padding: 13px; }
  .engineering-footer-cta { padding: 22px; }
}
@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
}