/* Digital Engineering Workspace — shared chrome + world themes */

:root {
  --ink: #e6e8eb;
  --ink-dim: rgba(230, 232, 235, 0.62);
  --chrome: #121417;
  --chrome-2: #1a1d22;
  --line: rgba(255, 255, 255, 0.1);
  --brand: #c8cdd3;
  --accent: #5b8fa8;
  --ok: #3d9a6a;
  --warn: #c4a035;
  --fault: #b85c4a;
  --font: "Barlow", "Segoe UI", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --radius: 4px;
  --nav-h: 56px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: auto; }
body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--chrome);
  line-height: 1.5;
  min-height: 100vh;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }

/* —— App chrome —— */
.app-bar {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 0 18px;
  background: rgba(18, 20, 23, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.brand {
  display: flex;
  flex-direction: column;
  color: var(--ink);
  text-decoration: none;
  min-width: 140px;
}
.brand:hover { text-decoration: none; }
.brand b {
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-dim);
  font-weight: 600;
}
.brand span {
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}
.world-nav {
  display: flex;
  flex: 1;
  gap: 2px;
  overflow-x: auto;
  scrollbar-width: none;
}
.world-nav::-webkit-scrollbar { display: none; }
.world-nav a {
  color: var(--ink-dim);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 8px 12px;
  border-radius: var(--radius);
  white-space: nowrap;
  text-decoration: none;
  border: 1px solid transparent;
}
.world-nav a:hover { color: var(--ink); background: rgba(255,255,255,0.04); }
.world-nav a[aria-current="page"] {
  color: var(--ink);
  border-color: var(--line);
  background: var(--chrome-2);
}
.lang {
  display: flex;
  gap: 4px;
}
.lang button {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 6px 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink-dim);
}
.lang button[aria-pressed="true"] {
  color: var(--ink);
  border-color: rgba(91, 143, 168, 0.55);
  background: rgba(91, 143, 168, 0.12);
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.04em;
  color: var(--ink-dim);
  padding: 4px 8px;
  border: 1px solid var(--line);
  border-radius: 999px;
}
.status-pill i {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 0 2px rgba(61, 154, 106, 0.25);
}

.app-foot {
  padding: 28px 18px 40px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  justify-content: space-between;
  color: var(--ink-dim);
  font-size: 0.78rem;
}
.app-foot a { color: var(--ink-dim); }

/* —— Shared content —— */
.wrap {
  width: min(1120px, 100%);
  margin: 0 auto;
  padding: 0 18px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 10px 16px;
  border-radius: var(--radius);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  border: 1px solid var(--line);
  color: var(--ink);
  background: transparent;
}
.btn:hover { text-decoration: none; background: rgba(255,255,255,0.05); }
.btn-solid {
  background: #dfe3e8;
  color: #121417;
  border-color: transparent;
}
.btn-solid:hover { filter: brightness(0.95); background: #dfe3e8; }

.cta-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }

h1 {
  font-size: clamp(1.6rem, 3.2vw, 2.35rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.12;
}
h2 {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}
.lead {
  margin-top: 12px;
  color: var(--ink-dim);
  max-width: 54ch;
  font-size: 1.05rem;
}
.mono { font-family: var(--mono); }

/* ===================== WORLD: DRAWING ===================== */
.world-drawing {
  --sheet: #eceef1;
  --pen: #1c1f24;
  --pen-dim: #6a7380;
  --dim: #2a5f7a;
  background:
    radial-gradient(ellipse at 50% 0%, #2a3038 0%, var(--chrome) 55%);
}
.drawing-stage {
  padding: 28px 18px 64px;
}
.drawing-monitor {
  width: min(1100px, 100%);
  margin: 0 auto;
  background: #0d0f12;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
  box-shadow: 0 40px 80px -40px rgba(0,0,0,0.8);
}
.drawing-chrome {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--ink-dim);
  letter-spacing: 0.04em;
}
.drawing-sheet {
  background: var(--sheet);
  color: var(--pen);
  border: 2px solid #1c1f24;
  position: relative;
  overflow: hidden;
  min-height: 520px;
}
.drawing-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(28,31,36,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(28,31,36,0.06) 1px, transparent 1px);
  background-size: 24px 24px;
  pointer-events: none;
}
.drawing-border {
  position: absolute;
  inset: 10px;
  border: 1.5px solid var(--pen);
  pointer-events: none;
}
.drawing-coords {
  position: absolute;
  top: 14px; left: 14px; right: 14px;
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 0.58rem;
  color: var(--pen-dim);
  letter-spacing: 0.08em;
  z-index: 2;
}
.drawing-body {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 16px;
  padding: 40px 24px 150px;
}
.drawing-copy h1 { color: var(--pen); }
.drawing-copy .lead { color: var(--pen-dim); }
.drawing-copy h2 { color: var(--dim); }
.drawing-copy ul {
  margin: 10px 0 0 1.1rem;
  color: var(--pen-dim);
  font-size: 0.92rem;
}
.drawing-copy li { margin-bottom: 5px; }
.title-block {
  position: absolute;
  right: 18px;
  bottom: 18px;
  width: min(300px, calc(100% - 36px));
  border: 1.5px solid var(--pen);
  background: #eceef1;
  font-family: var(--mono);
  font-size: 0.58rem;
  z-index: 3;
}
.title-block table { width: 100%; border-collapse: collapse; table-layout: fixed; }
.title-block td {
  border: 1px solid rgba(28,31,36,0.35);
  padding: 4px 6px;
  color: var(--pen);
  vertical-align: top;
  word-break: break-word;
}
.title-block td:first-child {
  width: 32%;
  color: var(--pen-dim);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.title-block .tb-title {
  font-family: var(--font);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.schematic {
  width: 100%;
  height: auto;
}
.schematic .wire {
  fill: none;
  stroke: var(--pen);
  stroke-width: 1.25;
  stroke-linecap: square;
}
.schematic .dim {
  fill: none;
  stroke: var(--dim);
  stroke-width: 0.8;
}
.schematic .dim-text {
  fill: var(--dim);
  font-family: var(--mono);
  font-size: 9px;
}
.schematic .label {
  fill: var(--pen);
  font-family: var(--mono);
  font-size: 10px;
}
.schematic .ghost {
  fill: none;
  stroke: rgba(28,31,36,0.25);
  stroke-width: 0.7;
  stroke-dasharray: 3 2;
}
.schematic .comp { fill: var(--sheet); stroke: var(--pen); stroke-width: 1.2; }
.draw-in {
  opacity: 0;
  stroke-dasharray: 800;
  stroke-dashoffset: 800;
}
.world-drawing.is-ready .draw-in {
  animation: drawStroke 1.4s var(--ease) forwards;
}
@keyframes drawStroke {
  to { stroke-dashoffset: 0; opacity: 1; }
}
.fade-up {
  opacity: 0;
  transform: translateY(8px);
}
.world-drawing.is-ready .fade-up {
  animation: fadeUp 0.7s var(--ease) forwards;
}
@keyframes fadeUp {
  to { opacity: 1; transform: none; }
}

/* ===================== WORLD: CAD ===================== */
.world-cad {
  background: #0b0c0e;
}
.cad-app {
  display: grid;
  grid-template-columns: 220px 1fr 200px;
  min-height: calc(100vh - var(--nav-h));
  border-top: 1px solid var(--line);
}
.cad-panel {
  background: #15171b;
  border-right: 1px solid var(--line);
  font-size: 0.78rem;
  overflow: auto;
}
.cad-panel.right { border-right: none; border-left: 1px solid var(--line); }
.cad-panel h3 {
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-dim);
  padding: 12px 12px 8px;
  border-bottom: 1px solid var(--line);
}
.tree { list-style: none; padding: 8px; }
.tree li {
  padding: 5px 8px;
  border-radius: 3px;
  color: var(--ink-dim);
  font-family: var(--mono);
  font-size: 0.7rem;
  cursor: default;
}
.tree li:hover,
.tree li.is-active {
  background: rgba(91, 143, 168, 0.16);
  color: var(--ink);
}
.tree .nest { padding-left: 14px; }
.cad-viewport-wrap {
  position: relative;
  background:
    radial-gradient(ellipse at 50% 40%, #1a1f26 0%, #0b0c0e 70%);
  min-height: 520px;
}
#cad-canvas, .cad-canvas {
  width: 100%;
  height: 100%;
  min-height: 520px;
  display: block;
}
.cad-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  padding: 16px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.cad-overlay .hud {
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--ink-dim);
}
.axis-badge {
  align-self: flex-start;
  width: 54px;
  height: 54px;
}
.cad-copy {
  max-width: 420px;
  pointer-events: auto;
}
.cad-copy h1 { font-size: clamp(1.3rem, 2.5vw, 1.8rem); }
.props {
  padding: 10px 12px;
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--ink-dim);
}
.props dt { color: rgba(230,232,235,0.4); margin-top: 8px; }
.props dd { color: var(--ink); margin-top: 2px; }

/* ===================== WORLD: PLC ===================== */
.world-plc {
  background: #101214;
}
.plc-app {
  display: grid;
  grid-template-columns: 230px 1fr;
  min-height: calc(100vh - var(--nav-h));
}
.plc-tree {
  background: #16191e;
  border-right: 1px solid var(--line);
  padding: 10px 0;
  font-family: var(--mono);
  font-size: 0.7rem;
}
.plc-tree .group {
  padding: 8px 14px 4px;
  color: rgba(230,232,235,0.4);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.6rem;
}
.plc-tree button,
.plc-tree a {
  display: block;
  width: 100%;
  text-align: left;
  padding: 6px 14px 6px 22px;
  color: var(--ink-dim);
  text-decoration: none;
}
.plc-tree button:hover,
.plc-tree a:hover,
.plc-tree .is-active {
  background: rgba(255,255,255,0.04);
  color: var(--ink);
}
.plc-workspace {
  padding: 18px;
  display: grid;
  gap: 14px;
}
.plc-tabs {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 8px;
}
.plc-tabs span {
  font-size: 0.72rem;
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-bottom: none;
  border-radius: 4px 4px 0 0;
  color: var(--ink-dim);
  background: #16191e;
}
.plc-tabs .on {
  color: var(--ink);
  background: #1c2128;
}
.logic-board {
  background: #1c2128;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  overflow-x: auto;
}
.fbd {
  display: flex;
  align-items: center;
  gap: 0;
  min-width: 640px;
  font-family: var(--mono);
  font-size: 0.72rem;
}
.fbd-block {
  border: 1px solid rgba(91, 143, 168, 0.45);
  background: #15191f;
  min-width: 120px;
  padding: 10px;
  position: relative;
  transition: border-color 0.2s ease, background 0.2s ease;
}
.fbd-block:hover {
  border-color: var(--accent);
  background: #1a222b;
}
.fbd-block .name {
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 8px;
  font-size: 0.75rem;
}
.fbd-block .pin {
  display: flex;
  justify-content: space-between;
  color: var(--ink-dim);
  margin: 3px 0;
}
.fbd-block .pin b { color: var(--ok); font-weight: 600; }
.fbd-wire {
  width: 36px;
  height: 2px;
  background: #4a5560;
  position: relative;
  flex-shrink: 0;
}
.fbd-wire::after {
  content: "";
  position: absolute;
  right: -1px; top: -3px;
  border: 4px solid transparent;
  border-left-color: #4a5560;
}
.plc-copy {
  max-width: 640px;
  padding: 8px 4px 24px;
}
.io-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--mono);
  font-size: 0.7rem;
  margin-top: 12px;
}
.io-table th, .io-table td {
  border: 1px solid var(--line);
  padding: 7px 9px;
  text-align: left;
}
.io-table th {
  color: var(--ink-dim);
  font-weight: 600;
  background: rgba(0,0,0,0.25);
}
.tag-on { color: var(--ok); }
.tag-off { color: var(--ink-dim); }

/* ===================== COMMISSION / SERVICE ===================== */
.diag-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 20px;
}
.diag-card {
  border: 1px solid var(--line);
  background: var(--chrome-2);
  border-radius: var(--radius);
  padding: 14px;
}
.diag-card .label {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--ink-dim);
  letter-spacing: 0.06em;
}
.diag-card .val {
  margin-top: 6px;
  font-size: 1.35rem;
  font-weight: 600;
  font-family: var(--mono);
}
.sig-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.75rem;
}
.sig-led {
  width: 8px; height: 8px; border-radius: 50%;
  background: #3a4048;
}
.sig-led.on { background: var(--ok); box-shadow: 0 0 0 3px rgba(61,154,106,0.2); }
.sig-led.warn { background: var(--warn); }
.sig-led.fault { background: var(--fault); }

.hmi-panel {
  margin-top: 18px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #1a1e24;
  padding: 16px;
  max-width: 520px;
}
.hmi-title {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-bottom: 12px;
}
.hmi-btns {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}
.hmi-btns button {
  min-height: 48px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: #12151a;
  color: var(--ink);
  font-weight: 700;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
}
.hmi-btns button.run { border-color: rgba(61,154,106,0.5); color: var(--ok); }
.hmi-btns button.stop { border-color: rgba(184,92,74,0.5); color: var(--fault); }

/* ===================== HOME JOURNEY ===================== */
.journey {
  position: relative;
}
.journey-step {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 72px 18px;
  position: relative;
  border-bottom: 1px solid var(--line);
}
.journey-step .inner {
  width: min(1100px, 100%);
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 28px;
  align-items: center;
}
.step-tag {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--accent);
  margin-bottom: 10px;
}
.journey-visual {
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
  min-height: 340px;
  background: #0e1013;
  position: relative;
}
.journey-progress {
  position: fixed;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 80;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.journey-progress a {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: transparent;
  display: block;
}
.journey-progress a.is-active {
  background: var(--accent);
  border-color: var(--accent);
}

.ref-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: 16px;
}
.ref-list li {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  border-right: 1px solid var(--line);
  font-weight: 600;
  font-size: 0.9rem;
}
.ref-list li:nth-child(2n) { border-right: none; }
.ref-list li:nth-last-child(-n+2) { border-bottom: none; }
.ref-list span { color: var(--ink-dim); font-weight: 500; font-size: 0.8rem; }

.page-plain {
  padding: 40px 18px 72px;
}
.page-plain .wrap { max-width: 820px; }

@media (max-width: 960px) {
  .cad-app { grid-template-columns: 1fr; }
  .cad-panel.right, .cad-panel:not(.right) { display: none; }
  .plc-app { grid-template-columns: 1fr; }
  .plc-tree { display: none; }
  .journey-step .inner,
  .drawing-body { grid-template-columns: 1fr; }
  .diag-grid { grid-template-columns: 1fr; }
  .journey-progress { display: none; }
  .world-nav a { padding: 8px 8px; font-size: 0.65rem; }
  .ref-list { grid-template-columns: 1fr; }
  .ref-list li { border-right: none; }
  .ref-list li:nth-last-child(2) { border-bottom: 1px solid var(--line); }
}