:root {
  --bg: #08090a;
  --bg-soft: #0d0f11;
  --panel: #111315;
  --panel-2: #171a1d;
  --panel-3: #202428;
  --line: #2d3237;
  --line-soft: #22272b;
  --text: #f4f5f6;
  --muted: #9ba2a8;
  --muted-2: #6f777e;
  --red: #c5232a;
  --red-dark: #79171b;
  --red-soft: rgba(197, 35, 42, 0.14);
  --green: #45b97c;
  --green-soft: rgba(69, 185, 124, 0.14);
  --amber: #e3aa4b;
  --cyan: #55b7c7;
  --shadow: 0 18px 48px rgba(0, 0, 0, 0.28);
  color-scheme: dark;
}

* { box-sizing: border-box; }

html { min-width: 320px; background: var(--bg); }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 12% -10%, rgba(197, 35, 42, 0.12), transparent 26rem),
    linear-gradient(180deg, #090a0b 0%, #08090a 100%);
  color: var(--text);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  font-size: 14px;
}

button, input, select { font: inherit; }

button {
  border: 1px solid var(--line);
  color: var(--text);
  background: #191c1f;
  border-radius: 9px;
  padding: 9px 12px;
  cursor: pointer;
  transition: 160ms ease;
}

button:hover { border-color: #4a5157; background: #212529; }
button:focus-visible, input:focus-visible, select:focus-visible { outline: 2px solid var(--red); outline-offset: 2px; }
button:disabled { opacity: .42; cursor: not-allowed; }

input, select {
  border: 1px solid var(--line);
  color: var(--text);
  background: #0d0f11;
  border-radius: 8px;
  padding: 9px 11px;
}

.app-shell { min-height: 100vh; }

.topbar {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 11px 26px;
  border-bottom: 1px solid var(--line-soft);
  background: rgba(8, 9, 10, .93);
  backdrop-filter: blur(18px);
  position: sticky;
  top: 0;
  z-index: 30;
}

.brand-lockup { display: flex; align-items: center; gap: 14px; min-width: 0; }
.brand-logo { width: 52px; height: 52px; object-fit: contain; display: block; flex: 0 0 auto; }
.eyebrow, .section-kicker {
  color: var(--red);
  font-size: 10px;
  letter-spacing: .18em;
  font-weight: 800;
  text-transform: uppercase;
}
.brand-lockup h1 { margin: 4px 0 0; font-size: clamp(18px, 2vw, 25px); letter-spacing: -.02em; white-space: nowrap; }

.top-status, .scene-tools, .export-actions { display: flex; align-items: center; gap: 8px; }
.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid rgba(69,185,124,.28);
  color: #c7f1db;
  background: var(--green-soft);
  border-radius: 999px;
  padding: 7px 11px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .04em;
  white-space: nowrap;
}
.status-chip i { width: 7px; height: 7px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 4px rgba(69,185,124,.12); }
.status-chip.neutral { color: #c5c9cc; border-color: var(--line); background: #15181a; }
.status-chip.neutral i { background: #737b82; box-shadow: none; }
.status-chip.hold { color: #ffd1d3; background: var(--red-soft); border-color: rgba(197,35,42,.45); }
.status-chip.hold i { background: #ff4d54; box-shadow: 0 0 0 4px rgba(255,77,84,.14); }
.icon-button { width: 36px; height: 34px; padding: 0; font-size: 18px; }

.main-nav {
  height: 50px;
  padding: 0 26px;
  display: flex;
  align-items: stretch;
  gap: 4px;
  border-bottom: 1px solid var(--line-soft);
  background: #0c0e0f;
  position: sticky;
  top: 78px;
  z-index: 29;
}
.nav-button {
  border: 0;
  border-radius: 0;
  background: transparent;
  color: var(--muted);
  padding: 0 18px;
  position: relative;
  font-weight: 650;
}
.nav-button:hover { color: var(--text); background: rgba(255,255,255,.025); border-color: transparent; }
.nav-button.active { color: var(--text); }
.nav-button.active::after { content: ""; position: absolute; left: 14px; right: 14px; bottom: 0; height: 3px; background: var(--red); border-radius: 3px 3px 0 0; }

main { padding: 18px 22px 28px; max-width: 1920px; margin: 0 auto; }
.view { display: none; }
.view.active { display: block; animation: view-in 200ms ease; }
@keyframes view-in { from { opacity: 0; transform: translateY(3px); } to { opacity: 1; transform: none; } }

.panel {
  border: 1px solid var(--line-soft);
  background: linear-gradient(180deg, var(--panel) 0%, #0f1113 100%);
  box-shadow: var(--shadow);
  border-radius: 13px;
  overflow: hidden;
}
.panel-head {
  min-height: 59px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line-soft);
}
.panel-head h2, .panel-head h3, .page-heading h2 { margin: 3px 0 0; line-height: 1.18; }
.panel-head h2 { font-size: 16px; }
.panel-head h3 { font-size: 15px; }
.panel-head > span { color: var(--muted); font-size: 11px; }

.identity-strip {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--line-soft);
  background: var(--line-soft);
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 14px;
}
.identity-strip > div { background: #101214; padding: 11px 15px; min-width: 0; }
.identity-strip span { display: block; color: var(--muted-2); font-size: 10px; text-transform: uppercase; letter-spacing: .1em; margin-bottom: 4px; }
.identity-strip strong { display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-size: 13px; }
.good-dot { display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--green); margin-right: 5px; }

.live-grid { display: grid; grid-template-columns: minmax(0, 1.75fr) minmax(320px, .62fr); gap: 14px; align-items: stretch; }
.scene-panel { min-height: 585px; }
.scene-tools { flex-wrap: wrap; justify-content: flex-end; }
.tool-button { padding: 6px 10px; font-size: 11px; }
.tool-button.active { background: var(--red-soft); color: #ffc2c5; border-color: rgba(197,35,42,.5); }

.canvas-wrap { height: 470px; position: relative; overflow: hidden; background: radial-gradient(circle at 52% 45%, #252a2f 0, #141719 42%, #0a0c0d 82%); }
#cellCanvas, #planCanvas { width: 100%; height: 100%; display: block; touch-action: none; }
.canvas-hint { position: absolute; left: 13px; bottom: 12px; color: #737c83; font-size: 10px; background: rgba(7,8,9,.7); padding: 5px 8px; border-radius: 6px; pointer-events: none; }
.vision-alert {
  position: absolute; left: 50%; top: 18px; transform: translateX(-50%) translateY(-12px);
  display: flex; align-items: center; gap: 10px; opacity: 0; pointer-events: none;
  border: 1px solid rgba(255,77,84,.75); color: white; background: rgba(109,13,18,.94);
  box-shadow: 0 0 34px rgba(197,35,42,.45); border-radius: 8px; padding: 10px 14px; transition: 180ms ease;
}
.vision-alert.show { opacity: 1; transform: translateX(-50%); animation: alert-pulse 1s ease infinite; }
.vision-alert strong { font-size: 11px; letter-spacing: .12em; }
.vision-alert span { font-size: 12px; color: #ffd7d9; }
@keyframes alert-pulse { 50% { box-shadow: 0 0 50px rgba(255,60,68,.75); } }
.projection-callout { position: absolute; right: 13px; bottom: 13px; min-width: 185px; background: rgba(9,11,12,.88); border: 1px solid rgba(85,183,199,.35); border-radius: 8px; padding: 8px 10px; pointer-events: none; }
.projection-callout span { color: var(--cyan); font-size: 9px; letter-spacing: .14em; display: block; }
.projection-callout strong { font-size: 11px; display: block; margin-top: 4px; }

.scene-legend { display: flex; flex-wrap: wrap; align-items: center; gap: 18px; padding: 10px 16px; color: var(--muted); font-size: 10px; border-top: 1px solid var(--line-soft); }
.scene-legend span { display: inline-flex; align-items: center; gap: 7px; }
.legend-box { width: 12px; height: 8px; border-radius: 2px; background: #777; }
.legend-box.source { background: #717a82; }
.legend-box.target { background: var(--cyan); box-shadow: 0 0 9px rgba(85,183,199,.65); }
.legend-box.verified { background: var(--green); }
.legend-box.error { background: #f2454d; }

.operator-panel { min-height: 585px; display: flex; flex-direction: column; }
.mode-label { color: var(--red) !important; letter-spacing: .09em; font-weight: 800; }
.task-card { margin: 12px; border: 1px solid var(--line); background: #15181a; border-radius: 10px; padding: 13px; }
.task-card.hold { border-color: rgba(255,77,84,.65); background: linear-gradient(180deg, rgba(128,18,24,.26), #15181a); }
.task-sequence { display: flex; align-items: center; margin-bottom: 12px; }
.task-step { width: 22px; height: 22px; display: inline-grid; place-items: center; border-radius: 50%; border: 1px solid #41484e; color: #697279; font-size: 10px; font-weight: 800; }
.task-step.active { border-color: var(--red); background: var(--red); color: white; }
.task-step.done { border-color: var(--green); background: var(--green); color: #07150e; }
.task-sequence > i { height: 1px; flex: 1; background: #33383d; }
.task-label { color: var(--muted); font-size: 11px; margin-bottom: 10px; }
.task-main { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; }
.task-main > div { background: #0e1012; border: 1px solid #272c30; border-radius: 7px; padding: 8px; }
.task-main span, .qr-row span { color: var(--muted-2); text-transform: uppercase; letter-spacing: .08em; font-size: 8px; display: block; }
.task-main strong { display: block; font-size: 12px; margin-top: 3px; }
.qr-row { display: flex; align-items: center; gap: 11px; margin-top: 11px; padding-top: 11px; border-top: 1px solid var(--line-soft); }
.qr-row strong { display: block; font-size: 11px; margin: 3px 0; }
.qr-row small { color: var(--muted); font-size: 10px; }
.qr-visual { width: 54px; height: 54px; flex: 0 0 auto; display: grid; grid-template-columns: repeat(11, 1fr); grid-template-rows: repeat(11, 1fr); gap: 1px; padding: 4px; background: white; border-radius: 4px; }
.qr-visual i { background: #111; }

.action-stack { padding: 0 12px; display: grid; gap: 8px; }
.primary-action, .primary-small { background: linear-gradient(180deg, #d62b33, #aa1b22); border-color: #df3c43; font-weight: 800; }
.primary-action:hover, .primary-small:hover { background: linear-gradient(180deg, #e3363e, #b91e26); border-color: #f34b52; }
.primary-small { padding: 10px 14px; }
.action-row { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.danger-action { color: #ffb9bc; border-color: rgba(197,35,42,.36); background: rgba(197,35,42,.08); font-size: 11px; }
.correct-action { background: rgba(69,185,124,.13); border-color: rgba(69,185,124,.48); color: #b9f1d2; font-weight: 750; }
.hidden { display: none !important; }
.run-controls { margin-top: auto; padding: 12px; display: grid; grid-template-columns: 1fr 1fr; gap: 7px; border-top: 1px solid var(--line-soft); }
.run-controls label { display: grid; grid-template-columns: auto 1fr; align-items: center; gap: 7px; color: var(--muted); font-size: 10px; }
.run-controls select { width: 100%; padding: 7px 8px; }

.source-section { margin-top: 14px; }
.assumption-note { max-width: 430px; text-align: right; }
.source-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; padding: 12px; }
.source-card { border: 1px solid var(--line); background: #15181a; border-radius: 9px; padding: 12px; min-width: 0; position: relative; overflow: hidden; }
.source-card::before { content: ""; position: absolute; inset: 0 auto 0 0; width: 3px; background: var(--lane-color); }
.source-card.active { border-color: var(--lane-color); box-shadow: 0 0 24px color-mix(in srgb, var(--lane-color) 28%, transparent); }
.source-card.replenishing { opacity: .65; }
.source-card-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 8px; }
.source-card-head span { color: var(--muted); font-size: 9px; letter-spacing: .1em; }
.source-card-head strong { font-size: 15px; display: block; margin-top: 3px; }
.source-state { border: 1px solid var(--line); border-radius: 999px; padding: 4px 7px; font-size: 8px !important; color: #cbd0d4 !important; }
.source-meta { display: grid; grid-template-columns: 1.2fr 1fr .8fr; gap: 7px; margin-top: 12px; }
.source-meta div { min-width: 0; }
.source-meta span { color: var(--muted-2); display: block; font-size: 8px; text-transform: uppercase; letter-spacing: .08em; }
.source-meta strong { font-size: 10px; display: block; margin-top: 3px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.stock-bar { height: 4px; margin-top: 12px; background: #292e32; border-radius: 4px; overflow: hidden; }
.stock-bar b { height: 100%; display: block; background: var(--lane-color); transition: width 250ms ease; }

.page-heading { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 4px 2px 16px; }
.page-heading h2 { font-size: clamp(20px, 2vw, 28px); }
.optimizer-layout { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(290px, .5fr); gap: 14px; }
.optimizer-canvas-wrap { height: 485px; background: radial-gradient(circle, #24292d, #0b0d0f 72%); }
.layer-selector { display: flex; gap: 7px; padding: 10px 14px; overflow-x: auto; border-top: 1px solid var(--line-soft); }
.layer-selector button { padding: 6px 9px; font-size: 10px; white-space: nowrap; }
.layer-selector button.active { border-color: var(--red); background: var(--red-soft); color: #ffbdc0; }
.metrics-panel { padding-bottom: 13px; }
.metrics-panel > h3, .constraint-list h3 { margin: 18px 16px 12px; font-size: 14px; }
.metric-list { display: grid; gap: 14px; padding: 0 16px; }
.metric-list div { display: grid; grid-template-columns: 1fr auto; gap: 6px 10px; align-items: end; }
.metric-list span { color: var(--muted); font-size: 11px; }
.metric-list strong { font-size: 12px; }
.metric-list i { grid-column: 1 / -1; height: 4px; background: #292e32; border-radius: 4px; overflow: hidden; }
.metric-list b { display: block; height: 100%; background: linear-gradient(90deg, var(--red), #e95056); width: 0; transition: width 350ms ease; }
.constraint-list { margin-top: 17px; border-top: 1px solid var(--line-soft); }
.constraint-list ul { list-style: none; padding: 0 16px; margin: 0; display: grid; gap: 9px; }
.constraint-list li { color: #c1c6ca; font-size: 11px; }
.constraint-list li i { color: var(--green); font-style: normal; margin-right: 8px; }
.plan-table-panel { margin-top: 14px; }
.table-scroll { overflow: auto; max-height: 420px; }
table { width: 100%; border-collapse: collapse; min-width: 760px; }
th, td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--line-soft); white-space: nowrap; }
th { position: sticky; top: 0; background: #171a1d; color: #7f878e; font-size: 9px; text-transform: uppercase; letter-spacing: .08em; z-index: 2; }
td { font-size: 10px; color: #c6cbcf; }
td strong { color: var(--text); }
.row-status { display: inline-flex; align-items: center; gap: 6px; }
.row-status i { width: 6px; height: 6px; background: var(--green); border-radius: 50%; }

.trace-chain { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr auto 1fr; align-items: center; padding: 16px; gap: 10px; }
.trace-chain > div { min-width: 0; background: #15181a; border: 1px solid var(--line); border-radius: 8px; padding: 11px; }
.trace-chain span { color: var(--muted-2); font-size: 8px; text-transform: uppercase; letter-spacing: .08em; display: block; }
.trace-chain strong { display: block; font-size: 10px; margin-top: 4px; overflow: hidden; text-overflow: ellipsis; }
.trace-chain > i { color: var(--red); font-style: normal; font-size: 18px; }
.trace-layout { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(330px, .6fr); gap: 14px; margin-top: 14px; }
.trace-filters { display: grid; grid-template-columns: 1fr 180px; gap: 8px; padding: 10px 12px; border-bottom: 1px solid var(--line-soft); }
.trace-scroll { max-height: 580px; }
.trace-result { font-weight: 750; }
.trace-result.pass { color: var(--green); }
.trace-result.fail { color: #ff6b71; }
.evidence-panel { min-height: 580px; }
.evidence-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; padding: 10px; max-height: 515px; overflow: auto; }
.evidence-card { border: 1px solid var(--line); background: #0c0e0f; border-radius: 8px; overflow: hidden; cursor: pointer; }
.evidence-card img { display: block; width: 100%; aspect-ratio: 16/9; object-fit: cover; background: #111; }
.evidence-card div { padding: 7px; }
.evidence-card span { color: var(--muted); font-size: 8px; display: block; }
.evidence-card strong { font-size: 9px; margin-top: 3px; display: block; }
.evidence-card.error { border-color: rgba(255,77,84,.5); }
.storage-note { color: var(--muted-2); font-size: 9px; line-height: 1.5; padding: 0 12px 12px; margin: 0; }

.architecture { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr; gap: 13px; align-items: stretch; padding: 16px; }
.arch-node { border: 1px solid var(--line); background: #15181a; border-radius: 9px; padding: 15px; min-width: 0; }
.arch-node.accent { border-color: rgba(197,35,42,.6); box-shadow: inset 0 0 28px rgba(197,35,42,.09); }
.arch-node span { color: var(--muted-2); font-size: 9px; text-transform: uppercase; letter-spacing: .1em; }
.arch-node strong { display: block; margin: 7px 0 5px; font-size: 15px; }
.arch-node small { color: var(--muted); font-size: 10px; }
.architecture > i { align-self: center; color: var(--red); font-style: normal; font-size: 18px; }
.integration-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 14px; }
.handshake-list { padding: 8px 14px 14px; }
.handshake-row { display: grid; grid-template-columns: 110px 1fr auto; gap: 12px; align-items: center; border-bottom: 1px solid var(--line-soft); padding: 11px 2px; }
.handshake-row span { color: var(--muted); font-size: 10px; }
.handshake-row strong { font-size: 10px; }
.handshake-row i { width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 4px rgba(69,185,124,.1); }
.handshake-row.warn i { background: var(--amber); box-shadow: 0 0 0 4px rgba(227,170,75,.1); }
.rule-panel, .data-panel, .boundary-panel { padding-bottom: 14px; }
.rule-panel h3, .data-panel h3, .boundary-panel h3 { margin: 17px 17px 12px; }
.plain-list { list-style: none; padding: 0 17px; margin: 0; display: grid; gap: 12px; }
.plain-list li { border-left: 2px solid var(--red); padding-left: 10px; }
.plain-list b { display: block; font-size: 11px; }
.plain-list span { display: block; color: var(--muted); font-size: 10px; line-height: 1.45; margin-top: 3px; }
.data-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; margin: 0 17px; background: var(--line-soft); border: 1px solid var(--line-soft); }
.data-columns div { background: #15181a; padding: 13px; }
.data-columns strong { display: block; font-size: 11px; }
.data-columns span { display: block; color: var(--muted); font-size: 10px; line-height: 1.5; margin-top: 6px; }
.boundary-panel p { color: var(--muted); font-size: 10px; line-height: 1.55; margin: 0 17px 12px; }
.degrade-row { display: flex; justify-content: space-between; align-items: center; gap: 10px; padding: 8px 17px; border-top: 1px solid var(--line-soft); font-size: 10px; }
.degrade-row span { color: var(--muted); }
.degrade-row strong { text-align: right; }

footer { display: flex; align-items: center; justify-content: space-between; gap: 16px; border-top: 1px solid var(--line-soft); color: #5e656b; padding: 14px 26px 20px; font-size: 9px; letter-spacing: .06em; }

@media (max-width: 1180px) {
  .live-grid, .optimizer-layout, .trace-layout { grid-template-columns: 1fr; }
  .operator-panel { min-height: 0; }
  .source-grid { grid-template-columns: 1fr 1fr; }
  .identity-strip { grid-template-columns: repeat(3, 1fr); }
  .architecture { grid-template-columns: 1fr; }
  .architecture > i { transform: rotate(90deg); justify-self: center; }
}

@media (max-width: 760px) {
  .topbar { position: relative; padding: 10px 14px; align-items: flex-start; }
  .top-status { flex-wrap: wrap; justify-content: flex-end; }
  .brand-lockup h1 { white-space: normal; }
  .main-nav { top: 0; padding: 0 6px; overflow-x: auto; }
  .nav-button { padding: 0 12px; white-space: nowrap; }
  main { padding: 12px 10px 22px; }
  .identity-strip { grid-template-columns: 1fr 1fr; }
  .identity-strip > div:last-child { grid-column: 1 / -1; }
  .canvas-wrap { height: 410px; }
  .source-grid, .integration-grid, .data-columns { grid-template-columns: 1fr; }
  .page-heading { align-items: flex-start; flex-direction: column; }
  .trace-chain { grid-template-columns: 1fr; }
  .trace-chain > i { transform: rotate(90deg); justify-self: center; }
  .trace-filters { grid-template-columns: 1fr; }
  .export-actions { flex-wrap: wrap; }
  .top-status .status-chip.neutral { display: none; }
  footer { align-items: flex-start; flex-direction: column; padding-inline: 14px; }
}

@media (max-width: 470px) {
  .brand-logo { width: 44px; height: 44px; }
  .brand-lockup h1 { font-size: 16px; }
  .eyebrow { font-size: 8px; }
  .top-status .status-chip { display: none; }
  .identity-strip { grid-template-columns: 1fr; }
  .identity-strip > div:last-child { grid-column: auto; }
  .source-grid { grid-template-columns: 1fr; }
  .scene-head { align-items: flex-start; flex-direction: column; }
  .canvas-wrap { height: 360px; }
  .run-controls { grid-template-columns: 1fr; }
  .action-row { grid-template-columns: 1fr; }
  .evidence-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}