:root {
  --background: oklch(1 0 0); --foreground: oklch(.145 0 0); --card: oklch(1 0 0);
  --primary: oklch(.205 0 0); --primary-foreground: oklch(.985 0 0);
  --secondary: oklch(.97 0 0); --muted-surface: oklch(.97 0 0); --muted-foreground: oklch(.556 0 0);
  --border: oklch(.922 0 0); --input: oklch(.922 0 0); --ring: oklch(.708 0 0);
  --ribbon-bg: var(--background); --ribbon-border: var(--border); --accent: var(--primary); --accent-dark: var(--foreground);
  --panel-bg: var(--card); --panel-border: var(--border); --text: var(--foreground); --muted: var(--muted-foreground);
  --canvas-bg: #f7f7f5; --grid-minor: #ececea; --grid-major: #d9d9d5; --sel: #d97706;
  --title-bg: var(--background); --status-bg: var(--foreground); --soft: var(--secondary); --positive: #0a8f39;
  --radius: 10px;
  font-family: "Geist Variable", "Geist", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
.dark {
  --background: oklch(.145 0 0); --foreground: oklch(.985 0 0); --card: oklch(.205 0 0);
  --primary: oklch(.922 0 0); --primary-foreground: oklch(.205 0 0);
  --secondary: oklch(.269 0 0); --muted-surface: oklch(.269 0 0); --muted-foreground: oklch(.708 0 0);
  --border: oklch(1 0 0 / 10%); --input: oklch(1 0 0 / 15%); --ring: oklch(.556 0 0);
  --ribbon-bg: var(--background); --ribbon-border: var(--border); --accent: var(--primary); --accent-dark: var(--foreground);
  --panel-bg: var(--card); --panel-border: var(--border); --text: var(--foreground); --muted: var(--muted-foreground);
  --title-bg: var(--background); --status-bg: #090909; --soft: var(--secondary); --positive: #3ec43e;
}
* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; overflow: hidden; color: var(--text); font-size: 12px; background: var(--background); }
button { font: inherit; color: inherit; }
#app { display: flex; flex-direction: column; height: 100vh; }

/* ---------- title bar */
#titlebar { height: 64px; background: var(--title-bg); color: var(--text); display: flex; align-items: center; gap: 22px; padding: 0 24px; font-size: 12px; flex: none; border-bottom: 1px solid var(--ribbon-border); }
.brand-lockup { display: flex; align-items: center; gap: 10px; min-width: max-content; }
#titlebar .logo { display: inline-block; width: 34px; height: 34px; border-radius: 9px; background: var(--accent); color: #fff; font-size: 16px; font-weight: 750; text-align: center; line-height: 34px; letter-spacing: -.04em; }
.brand-name { font-size: 16px; font-weight: 650; letter-spacing: -.025em; }
.brand-tagline { color: var(--muted); padding-left: 10px; border-left: 1px solid var(--ribbon-border); }
#title-text { color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
#titlebar .title-right { margin-left: auto; color: var(--muted); background: var(--soft); border: 1px solid var(--ribbon-border); border-radius: 999px; padding: 5px 10px; }

/* ---------- ribbon */
#ribbon { background: var(--ribbon-bg); border-bottom: 1px solid var(--ribbon-border); flex: none; }
.ribbon-tabs { display: flex; gap: 22px; padding: 0 24px; background: #fff; border-bottom: 1px solid var(--ribbon-border); }
.rtab { position: relative; border: 0; background: none; padding: 10px 0 9px; cursor: pointer; color: var(--muted); }
.rtab:hover { color: var(--text); }
.rtab.active { background: transparent; color: var(--accent-dark); font-weight: 650; }
.rtab.active::after { content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 2px; background: var(--accent); }
.rtab.file { background: transparent; color: var(--text); font-weight: 650; padding: 10px 0 9px; border-radius: 0; }
.rtab.file:hover { background: var(--accent-dark); }
.rtab.file:hover { background: transparent; color: var(--muted); }
.ribbon-panels { height: 98px; padding: 7px 18px 5px; overflow-x: auto; overflow-y: hidden; }
.rpanel { display: none; height: 100%; gap: 4px; }
.rpanel.active { display: flex; }
.rgroup { display: flex; flex-direction: column; border-right: 1px solid var(--ribbon-border); padding: 0 10px; min-width: 60px; }
.rgroup-body { flex: 1; display: flex; align-items: flex-start; gap: 3px; }
.rgroup-title { text-align: center; color: var(--muted); font-size: 11px; padding-top: 2px; }
.rbtn { border: 1px solid transparent; background: none; border-radius: 3px; cursor: pointer; display: flex; align-items: center; white-space: nowrap; }
.rbtn:hover { background: var(--soft); border-color: var(--panel-border); }
.rbtn:active, .rbtn.active, .rbtn.toggle.on { background: #ececea; border-color: #cdcdc8; }
.rbtn.big { flex-direction: column; width: 70px; padding: 4px 2px; height: 66px; justify-content: flex-start; gap: 2px; font-size: 11px; line-height: 1.1; text-align: center; white-space: normal; }
.rbtn.big .ico { font-size: 22px; line-height: 30px; height: 30px; filter: grayscale(1); }
.rbtn.small { padding: 2px 6px; height: 21px; gap: 4px; font-size: 11px; }
.rbtn.small .ico { font-size: 12px; }
.rbtn:disabled { opacity: .4; cursor: default; }
.rbtn:disabled:hover { background: none; border-color: transparent; }
.ico.green { color: #2e9e3f; } .ico.red { color: #c9302c; } .ico.blue { color: var(--accent); }
.rcol { display: flex; flex-direction: column; gap: 1px; }
.rform { display: grid; grid-template-columns: auto auto; gap: 3px 8px; align-items: center; font-size: 11px; padding: 2px 0; }
.rform label { color: #333; }
.rform input[type=text], .rform input[type=number], .rform select { font: inherit; font-size: 11px; padding: 1px 3px; border: 1px solid #b7bec8; border-radius: 2px; background: #fff; }
.rform input[disabled] { color: #888; background: #f3f3f3; }
.inline { display: inline-flex; gap: 3px; align-items: center; }
.rform.speed input[type=range] { width: 130px; }
.clock { font-family: "SF Mono", Menlo, Consolas, monospace; font-size: 15px; font-weight: 600; color: var(--accent-dark); }
.clock-sub { font-family: "SF Mono", Menlo, Consolas, monospace; font-size: 10px; color: var(--muted); }
.support-text { max-width: 720px; font-size: 11px; line-height: 1.5; padding: 4px; color: #333; align-self: center; }
kbd { border: 1px solid #bbb; border-bottom-width: 2px; border-radius: 3px; padding: 0 4px; background: #fff; font-family: inherit; font-size: 10px; }

/* ---------- file menu */
#file-menu { position: absolute; top: 64px; left: 0; right: 0; bottom: 22px; z-index: 50; display: flex; background: #fff; }
#file-menu[hidden] { display: none; }
.fm-left { width: 180px; background: var(--accent); padding: 12px 0; display: flex; flex-direction: column; }
.fm-left button { background: none; border: none; color: #fff; text-align: left; padding: 8px 20px; font-size: 13px; cursor: pointer; }
.fm-left button:hover { background: var(--accent-dark); }
.fm-left hr { border: none; border-top: 1px solid rgba(255,255,255,.3); margin: 8px 12px; }
.fm-right { flex: 1; padding: 20px 30px; color: #333; }
.fm-right h2 { font-size: 16px; font-weight: 600; color: var(--accent-dark); margin: 10px 0 6px; }

/* ---------- main layout */
#main { flex: 1; display: flex; min-height: 0; }
.panel { background: var(--panel-bg); border: 1px solid var(--panel-border); display: flex; flex-direction: column; min-height: 0; }
.panel-title { background: #e7ebf0; border-bottom: 1px solid var(--panel-border); padding: 3px 8px; font-weight: 600; color: #2b3a4d; flex: none; }
#left { width: 190px; flex: none; margin: 2px 0 2px 2px; overflow: auto; }
#left[hidden], #navigation[hidden], #properties[hidden], #bottom[hidden] { display: none; }
.lib-header { padding: 4px 8px; background: #f2f4f7; border-bottom: 1px solid #e2e6eb; cursor: pointer; color: #2b3a4d; font-weight: 600; }
.lib-items { display: flex; flex-direction: column; }
.lib-items.collapsed { display: none; }
.lib-item { display: flex; align-items: center; gap: 8px; padding: 3px 10px; cursor: pointer; border: 1px solid transparent; }
.lib-item:hover { background: #eef3f9; }
.lib-item.active { background: #d3e0f0; border-color: #9fb6d1; }
.lib-item canvas { width: 26px; height: 22px; flex: none; }
.lib-hint { margin: 8px; padding: 6px; font-size: 11px; color: var(--muted); border-top: 1px solid #e2e6eb; line-height: 1.4; }

#center { flex: 1; display: flex; flex-direction: column; min-width: 0; margin: 2px; }
.model-tabs { display: flex; gap: 1px; background: #e7ebf0; border: 1px solid var(--panel-border); border-bottom: none; padding: 3px 4px 0; }
.mtab { border: 1px solid var(--panel-border); border-bottom: none; background: #f2f4f7; padding: 3px 12px; cursor: pointer; border-radius: 3px 3px 0 0; color: #333; }
.mtab.active { background: #fff; font-weight: 600; color: var(--accent-dark); margin-bottom: -1px; padding-bottom: 4px; }
.views { flex: 1; position: relative; border: 1px solid var(--panel-border); background: #fff; min-height: 0; }
.view { position: absolute; inset: 0; display: none; overflow: auto; }
.view.active { display: block; }
.view[data-view=facility] { overflow: hidden; }
#canvas { display: block; width: 100%; height: 100%; background: var(--canvas-bg); cursor: default; }
#canvas.tool-pan { cursor: grab; } #canvas.tool-place { cursor: copy; } #canvas.tool-link { cursor: crosshair; } #canvas.dragging { cursor: grabbing; }
#hud { position: absolute; left: 8px; top: 6px; font-size: 11px; color: #2b3a4d; background: rgba(255,255,255,.85); padding: 3px 8px; border-radius: 3px; border: 1px solid #d5d9e0; pointer-events: none; }
#hud:empty { display: none; }

.subtabs { display: flex; gap: 2px; padding: 4px 6px 0; background: #f2f4f7; border-bottom: 1px solid var(--panel-border); }
.sub { padding: 3px 10px; border: 1px solid var(--panel-border); border-bottom: none; background: #e7ebf0; border-radius: 3px 3px 0 0; color: #444; cursor: pointer; }
.sub.active { background: #fff; color: var(--accent-dark); font-weight: 600; margin-bottom: -1px; padding-bottom: 4px; }
.grid-area { padding: 0; }
.muted { color: var(--muted); }
.process-toolbar { display: flex; align-items: center; gap: 10px; padding: 5px 8px; background: #f2f4f7; border-bottom: 1px solid var(--panel-border); }
.process-workspace { height: calc(100% - 57px); display: grid; grid-template-columns: 220px minmax(0, 1fr); min-height: 320px; }
.proc-list { padding: 5px; border-right: 1px solid var(--panel-border); background: #f7f8fa; overflow: auto; }
.proc-list button { display: block; width: 100%; border: 1px solid transparent; background: transparent; border-radius: 2px; padding: 6px 8px; text-align: left; cursor: pointer; }
.proc-list button:hover { background: #e8eef6; }
.proc-list button.active { background: #d3e0f0; border-color: #9fb6d1; color: var(--accent-dark); }
.proc-list .process-trigger { display: block; color: var(--muted); font-size: 10px; margin-top: 2px; overflow: hidden; text-overflow: ellipsis; }
.proc-canvas { padding: 12px; overflow: auto; }
.process-editor-toolbar, .step-palette { display: flex; align-items: center; gap: 7px; padding: 6px 8px; border: 1px solid #d5d9e0; background: #f7f8fa; }
.process-editor-toolbar { border-radius: 4px 4px 0 0; }
.process-editor-toolbar .process-name { width: 180px; font-weight: 600; }
.process-editor-toolbar select { min-width: 210px; }
.process-editor-toolbar input, .process-editor-toolbar select, .process-step input, .process-step select { font: inherit; padding: 3px 5px; border: 1px solid #b7bec8; border-radius: 2px; background: #fff; }
.step-palette { border-top: none; margin-bottom: 16px; border-radius: 0 0 4px 4px; }
.proc-flow { display: flex; align-items: stretch; gap: 8px; flex-wrap: wrap; }
.pstep { border-radius: 14px; padding: 6px 16px; color: #fff; font-weight: 600; }
.pstep.begin { background: #2e9e3f; } .pstep.end { background: #c9302c; }
.pdrop { border: 2px dashed #b7bec8; padding: 10px 30px; color: var(--muted); border-radius: 4px; }
.parrow { font-size: 18px; color: #777; }
.process-step { width: 205px; border: 1px solid #b8c0cb; border-radius: 4px; background: #fff; box-shadow: 0 1px 2px rgba(0,0,0,.06); }
.process-step .step-title { display: flex; align-items: center; gap: 5px; padding: 5px 7px; background: #e7ebf0; border-bottom: 1px solid #cdd3dc; color: #2b3a4d; font-weight: 600; }
.process-step .step-title span { margin-right: auto; }
.process-step .step-title button { border: none; background: transparent; padding: 0 3px; cursor: pointer; color: #555; }
.process-step .step-fields { display: grid; grid-template-columns: 62px minmax(0, 1fr); gap: 5px; align-items: center; padding: 7px; }
.process-step .step-fields label { color: var(--muted); }
.process-step .step-fields input, .process-step .step-fields select { width: 100%; min-width: 0; }
.process-step input.invalid { border-color: #c9302c; background: #fff2f2; }
.process-help { margin-top: 14px; padding: 9px 11px; border: 1px solid #d5d9e0; background: #f8fafc; border-radius: 4px; line-height: 1.5; }

/* tables */
.tbl { border-collapse: collapse; width: 100%; font-size: 11px; }
.tbl th { position: sticky; top: 0; background: #e7ebf0; border: 1px solid #d5d9e0; padding: 3px 6px; text-align: left; font-weight: 600; color: #2b3a4d; white-space: nowrap; }
.tbl td { border: 1px solid #e6e9ee; padding: 2px 6px; white-space: nowrap; }
.tbl tr:nth-child(even) td { background: #f8f9fb; }
.tbl td.num { text-align: right; font-family: "SF Mono", Menlo, Consolas, monospace; }
.tbl td.pivot { color: #2b3a4d; font-weight: 600; background: #f1f4f8 !important; }
.tbl td.blank { background: #f1f4f8 !important; }
.tbl tr.err td { color: #b00020; }
.results-toolbar { display: flex; align-items: center; gap: 10px; padding: 4px 8px; background: #f2f4f7; border-bottom: 1px solid var(--panel-border); }
.results-toolbar input { font: inherit; padding: 2px 6px; border: 1px solid #b7bec8; border-radius: 2px; }
.results-empty { padding: 30px; color: var(--muted); font-size: 13px; }

/* data tables */
.data-shell { display: grid; grid-template-columns: 190px minmax(0, 1fr); height: 100%; min-height: 320px; }
.data-sidebar { border-right: 1px solid var(--panel-border); background: #f7f8fa; display: flex; flex-direction: column; min-width: 0; }
.data-toolbar, .table-toolbar, .experiment-toolbar { display: flex; align-items: center; gap: 6px; padding: 6px 8px; background: #f2f4f7; border-bottom: 1px solid var(--panel-border); flex-wrap: wrap; }
.data-list { overflow: auto; padding: 4px; }
.data-list button { display: block; width: 100%; padding: 5px 7px; border: 1px solid transparent; background: transparent; text-align: left; cursor: pointer; border-radius: 2px; }
.data-list button:hover { background: #e8eef6; }
.data-list button.active { background: #d3e0f0; border-color: #9fb6d1; color: var(--accent-dark); font-weight: 600; }
.data-editor { min-width: 0; overflow: auto; }
.table-toolbar .table-name { font-weight: 600; color: var(--accent-dark); margin-right: auto; }
.schedule-repeat { display: inline-flex; align-items: center; gap: 5px; color: #3f4b5a; }
.schedule-repeat input { width: 72px; padding: 3px 5px; border: 1px solid #b7bec8; border-radius: 2px; font: inherit; }
.schedule-editor { width: min(620px, 100%); }
.schedule-editor th:nth-child(1), .schedule-editor th:nth-child(2) { width: 46%; }
.table-editor input { width: 100%; min-width: 80px; border: 1px solid transparent; padding: 3px 5px; background: transparent; font: inherit; }
.table-editor input:focus { outline: none; border-color: var(--accent); background: #fff; }
.table-editor th .column-heading { display: flex; align-items: center; gap: 4px; }
.table-editor th .column-heading button, .row-delete { border: none; background: transparent; color: #8a3333; cursor: pointer; padding: 0 3px; }
.data-empty { padding: 30px; color: var(--muted); }
.data-note { margin: 12px; padding: 12px; border: 1px solid #d5d9e0; border-radius: 4px; background: #f8fafc; line-height: 1.55; }
.data-note code { color: var(--accent-dark); }
.lookup-preview { width: min(560px, calc(100% - 24px)); margin: 12px; padding: 8px; border: 1px solid #d5d9e0; border-radius: 4px; background: linear-gradient(#fff, #f8fafc); }
.lookup-preview svg { display: block; width: 100%; height: auto; }
.lookup-preview line { stroke: #aab4c2; stroke-width: 1; }
.lookup-preview polyline { fill: none; stroke: var(--accent); stroke-width: 2.5; stroke-linejoin: round; stroke-linecap: round; }
.lookup-preview circle { fill: #fff; stroke: var(--accent-dark); stroke-width: 2; }
.lookup-preview text { fill: var(--muted); font-size: 10px; }

/* experiments */
.experiment-toolbar label { display: inline-flex; align-items: center; gap: 5px; }
.experiment-toolbar input[type=number] { width: 76px; }
.experiment-toolbar input, .experiment-toolbar select { font: inherit; padding: 2px 5px; border: 1px solid #b7bec8; border-radius: 2px; }
.experiment-toolbar input[type=search] { width: 180px; margin-left: auto; }
.experiment-progress { height: 4px; background: #e4e8ed; overflow: hidden; }
.experiment-progress span { display: block; height: 100%; width: 0; background: var(--accent); transition: width .15s ease; }
.experiment-status { padding: 5px 9px; border-bottom: 1px solid #e2e6eb; }
#experiment-body { overflow: auto; }
#experiment-body .tbl td:first-child { text-align: right; color: var(--muted); }

/* right side */
#right { width: 300px; flex: none; display: flex; flex-direction: column; margin: 2px 2px 2px 0; gap: 2px; min-height: 0; }
#navigation { flex: none; max-height: 170px; }
#properties { flex: 1; }
.tree { padding: 4px 6px; overflow: auto; line-height: 1.6; }
.tree .node { cursor: pointer; padding: 0 4px; border-radius: 2px; white-space: nowrap; }
.tree .node:hover { background: #eef3f9; }
.tree .node.sel { background: #d3e0f0; }
.tree .indent1 { padding-left: 16px; } .tree .indent2 { padding-left: 32px; } .tree .indent3 { padding-left: 48px; }
.props-grid { flex: 1; overflow: auto; }
.pgroup { background: #e7ebf0; padding: 3px 6px; font-weight: 600; color: #2b3a4d; cursor: pointer; border-bottom: 1px solid #d5d9e0; user-select: none; }
.pgroup::before { content: "▾ "; color: #666; }
.pgroup.collapsed::before { content: "▸ "; }
.prow { display: grid; grid-template-columns: 45% 55%; border-bottom: 1px solid #eceff3; align-items: center; min-height: 22px; }
.prow:hover { background: #f6f8fb; }
.prow.hidden { display: none; }
.prow .pname { padding: 2px 6px 2px 14px; color: #333; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.prow .pval { padding: 1px 3px; display: flex; gap: 2px; align-items: center; }
.prow .pval input, .prow .pval select { font: inherit; font-size: 11px; width: 100%; min-width: 0; padding: 1px 3px; border: 1px solid transparent; background: transparent; border-radius: 2px; }
.prow .pval input:hover, .prow .pval select:hover { border-color: #c9ced6; background: #fff; }
.prow .pval input:focus, .prow .pval select:focus { outline: none; border-color: var(--accent); background: #fff; }
.prow .pval select.unit { width: 66px; flex: none; color: #555; }
.prow .pval input.invalid { border-color: #c9302c; background: #fff2f2; }
.prow .pval input[type=color] { width: 40px; padding: 0; height: 18px; }
.props-desc { flex: none; height: 74px; border-top: 1px solid var(--panel-border); background: #f7f8fa; padding: 5px 8px; font-size: 11px; color: #333; overflow: auto; }
.props-desc b { color: var(--accent-dark); }

/* bottom */
#bottom { height: 170px; flex: none; margin: 0 2px 2px; background: #fff; border: 1px solid var(--panel-border); display: flex; flex-direction: column; }
.btabs { display: flex; gap: 2px; background: #e7ebf0; padding: 2px 4px 0; border-bottom: 1px solid var(--panel-border); align-items: flex-end; }
.btab { border: 1px solid var(--panel-border); border-bottom: none; background: #f2f4f7; padding: 2px 10px; cursor: pointer; border-radius: 3px 3px 0 0; color: #333; }
.btab.active { background: #fff; font-weight: 600; color: var(--accent-dark); margin-bottom: -1px; padding-bottom: 3px; }
.btab .badge:not(:empty) { background: #c9302c; color: #fff; border-radius: 8px; padding: 0 5px; font-size: 10px; margin-left: 4px; }
.btab-x { border: none; background: none; color: var(--muted); cursor: pointer; padding: 2px 8px; }
.spacer { flex: 1; }
.bpanes { flex: 1; position: relative; min-height: 0; }
.bpane { position: absolute; inset: 0; overflow: auto; display: none; }
.bpane.active { display: block; }
#console-body { margin: 0; padding: 4px 8px; font-size: 11px; font-family: "SF Mono", Menlo, Consolas, monospace; white-space: pre-wrap; }
#watch-body { padding: 6px 10px; }
#watch-body table td { padding: 1px 12px 1px 0; }

/* status bar */
#statusbar { height: 22px; flex: none; background: var(--status-bg); color: #fff; display: flex; align-items: center; gap: 24px; padding: 0 10px; font-size: 11px; }
#statusbar span { white-space: pre; }

/* dashboard */
#dash-body { padding: 14px; display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 10px; }
.tile { border: 1px solid #d5d9e0; border-radius: 4px; padding: 8px 12px; background: #fff; }
.tile .tlabel { color: var(--muted); font-size: 11px; }
.tile .tval { font-size: 22px; font-weight: 600; color: var(--accent-dark); font-family: "SF Mono", Menlo, Consolas, monospace; }
.tile .tsub { font-size: 10px; color: var(--muted); }
.tile.wide { grid-column: 1 / -1; }
.tile canvas { width: 100%; height: 200px; display: block; }
@media (max-width: 900px) { #left { display: none; } #right { width: 240px; } }

/* ---------- SSI application family refinement */
[hidden] { display: none !important; }
button, input, select { outline-color: var(--accent); }
button:focus-visible, input:focus-visible, select:focus-visible { outline: 2px solid #9c9c96; outline-offset: 2px; }
.panel { border-color: var(--panel-border); }
.panel-title, .lib-header, .pgroup, .btabs, .subtabs, .process-toolbar,
.data-toolbar, .table-toolbar, .experiment-toolbar, .results-toolbar {
  background: var(--soft);
  color: var(--text);
}
.panel-title { min-height: 28px; display: flex; align-items: center; padding: 5px 9px; letter-spacing: -.01em; }
#left { margin: 8px 0 8px 8px; border-radius: var(--radius); overflow: hidden auto; }
#center { margin: 8px; }
#right { margin: 8px 8px 8px 0; gap: 8px; }
#right .panel { border-radius: var(--radius); overflow: hidden; }
.model-tabs { gap: 18px; background: transparent; border: 0; padding: 0 4px 7px; }
.mtab { position: relative; border: 0; background: transparent; padding: 5px 0; color: var(--muted); }
.mtab:hover { color: var(--text); }
.mtab.active { background: transparent; color: var(--text); margin: 0; padding-bottom: 5px; font-weight: 650; }
.mtab.active::after { content: ""; position: absolute; left: 0; right: 0; bottom: -2px; height: 2px; background: var(--accent); }
.views { border-color: var(--panel-border); border-radius: var(--radius); overflow: hidden; box-shadow: 0 1px 2px rgba(0,0,0,.03); }
.subtabs { gap: 16px; padding: 8px 12px 0; }
.sub { border: 0; background: transparent; border-radius: 0; color: var(--muted); padding: 4px 0 7px; }
.sub.active { background: transparent; color: var(--text); margin: 0; padding-bottom: 7px; border-bottom: 2px solid var(--accent); }
.lib-item, .proc-list button, .data-list button, .tree .node { border-radius: 6px; }
.lib-item:hover, .proc-list button:hover, .data-list button:hover, .tree .node:hover { background: #f0f0ee; }
.lib-item.active, .proc-list button.active, .data-list button.active, .tree .node.sel { background: #e8e8e5; border-color: #d0d0cb; color: var(--text); }
.process-editor-toolbar, .step-palette, .process-step, .data-note, .lookup-preview { border-color: var(--panel-border); border-radius: var(--radius); }
.process-step { box-shadow: 0 1px 3px rgba(0,0,0,.05); }
.process-step .step-title { background: var(--soft); color: var(--text); border-color: var(--panel-border); border-radius: 9px 9px 0 0; }
.tbl th { background: var(--soft); border-color: var(--panel-border); color: var(--text); height: 28px; }
.tbl td { border-color: #ececea; height: 25px; }
.tbl tr:nth-child(even) td { background: #fafaf9; }
.tbl td.pivot, .tbl td.blank { background: #f1f1ef !important; color: var(--text); }
.tile { border-color: var(--panel-border); border-radius: var(--radius); padding: 14px 16px; box-shadow: 0 1px 2px rgba(0,0,0,.025); }
.tile .tval { margin: 4px 0; letter-spacing: -.035em; }
#bottom { margin: 0 8px 8px; border-color: var(--panel-border); border-radius: var(--radius); overflow: hidden; }
.btab { border: 0; background: transparent; color: var(--muted); padding: 6px 10px; }
.btab.active { background: #fff; color: var(--text); margin: 0; padding-bottom: 6px; border-radius: 6px 6px 0 0; }
#statusbar { padding: 0 14px; background: var(--status-bg); }
.fm-left { width: 220px; background: #181817; padding-top: 24px; }
.fm-left button { padding: 10px 24px; }
.fm-left button:hover { background: #30302e; }
.fm-right { padding: 34px 42px; }
.fm-right h2 { color: var(--text); font-size: 18px; letter-spacing: -.02em; }

/* ---------- calibrated scenario library */
.dialog-backdrop { position: fixed; inset: 0; z-index: 100; display: grid; place-items: center; padding: 24px; background: rgba(18,18,17,.58); backdrop-filter: blur(8px); }
.scenario-dialog { width: min(1080px, 100%); max-height: min(760px, calc(100vh - 48px)); overflow: auto; background: #fff; border: 1px solid rgba(255,255,255,.5); border-radius: 18px; box-shadow: 0 30px 80px rgba(0,0,0,.25); }
.scenario-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 24px; padding: 30px 32px 24px; border-bottom: 1px solid var(--ribbon-border); }
.scenario-header h1 { margin: 5px 0 8px; font-size: 28px; line-height: 1.1; letter-spacing: -.045em; }
.scenario-header p { max-width: 620px; margin: 0; color: var(--muted); font-size: 13px; line-height: 1.55; }
.eyebrow { color: var(--muted); font-size: 10px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.dialog-close { width: 34px; height: 34px; flex: none; border: 1px solid var(--panel-border); border-radius: 50%; background: #fff; color: var(--muted); font-size: 22px; line-height: 1; cursor: pointer; }
.dialog-close:hover { color: var(--text); background: var(--soft); }
.scenario-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; padding: 24px 32px 30px; }
.scenario-card { display: flex; flex-direction: column; min-height: 330px; padding: 20px; border: 1px solid var(--panel-border); border-radius: 14px; background: #fff; transition: transform .16s ease, box-shadow .16s ease, border-color .16s ease; }
.scenario-card:hover { transform: translateY(-2px); border-color: #b9b9b3; box-shadow: 0 14px 30px rgba(0,0,0,.07); }
.scenario-card-top { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.scenario-mark { border: 1px solid var(--panel-border); border-radius: 999px; padding: 3px 7px; font-size: 9px; font-weight: 700; letter-spacing: .04em; }
.scenario-card h2 { margin: 18px 0 9px; font-size: 18px; line-height: 1.18; letter-spacing: -.03em; }
.scenario-card > p { min-height: 62px; margin: 0; color: var(--muted); line-height: 1.55; }
.scenario-metric { display: flex; align-items: baseline; gap: 8px; margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--ribbon-border); }
.scenario-metric strong { font: 650 25px/1 "SF Mono", Menlo, Consolas, monospace; letter-spacing: -.05em; }
.scenario-metric span { color: var(--muted); font-size: 10px; }
.scenario-tags { display: flex; flex-wrap: wrap; gap: 5px; margin: 15px 0 18px; }
.scenario-tags span { padding: 4px 7px; border-radius: 999px; background: var(--soft); color: var(--muted); font-size: 10px; }
.scenario-load { display: flex; align-items: center; justify-content: space-between; width: 100%; margin-top: auto; padding: 10px 12px; border: 1px solid var(--accent); border-radius: 8px; background: var(--accent); color: #fff; font-weight: 650; cursor: pointer; }
.scenario-load:hover { background: #333330; }
.scenario-footer { display: flex; align-items: center; gap: 8px; padding: 14px 32px; border-top: 1px solid var(--ribbon-border); background: var(--soft); color: var(--muted); font-size: 10px; }
.scenario-footer strong { color: var(--text); }
.scenario-footer-note { margin-left: auto; }

@media (max-width: 900px) {
  .brand-tagline, #titlebar .title-right { display: none; }
  #titlebar { height: 56px; padding: 0 16px; }
  #file-menu { top: 56px; }
  .ribbon-tabs { padding: 0 16px; gap: 16px; overflow-x: auto; }
  .scenario-grid { grid-template-columns: 1fr; }
  .scenario-card { min-height: 0; }
  .scenario-footer { align-items: flex-start; flex-wrap: wrap; }
  .scenario-footer-note { width: 100%; margin-left: 0; }
}

@media (max-width: 680px) {
  #title-text { display: none; }
  #right { display: none; }
  .scenario-header, .scenario-grid { padding-left: 20px; padding-right: 20px; }
}

@media (prefers-reduced-motion: reduce) {
  .scenario-card { transition: none; }
}

/* ---------- shared SSI shell: CADI / ATLAS / Machines */
.auth-loading #app, .auth-required #app { visibility: hidden; }
.auth-ready .auth-gate { display: none; }
.auth-gate {
  position: fixed; inset: 0; z-index: 1000; display: grid; place-items: center; overflow: hidden;
  padding: 24px; background: color-mix(in oklab, var(--background) 96%, var(--secondary)); color: var(--foreground);
}
.auth-card { position: relative; z-index: 2; display: flex; width: min(390px, 100%); flex-direction: column; align-items: center; text-align: center; }
.ssi-wordmark { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 28px; color: var(--foreground); font-size: 8px; font-weight: 650; line-height: 1.05; text-align: left; }
.ssi-constellation { position: relative; display: block; width: 34px; height: 28px; }
.ssi-constellation i, .header-mark i { position: absolute; display: block; border-radius: 999px; background: currentColor; }
.ssi-constellation i:nth-child(1) { width: 4px; height: 4px; left: 14px; top: 11px; }
.ssi-constellation i:nth-child(2) { width: 3px; height: 3px; left: 5px; top: 6px; opacity: .75; }
.ssi-constellation i:nth-child(3) { width: 2px; height: 2px; left: 26px; top: 3px; opacity: .55; }
.ssi-constellation i:nth-child(4) { width: 2px; height: 2px; left: 29px; top: 18px; opacity: .45; }
.ssi-constellation i:nth-child(5) { width: 2px; height: 2px; left: 2px; top: 20px; opacity: .45; }
.ssi-constellation i:nth-child(6) { width: 2px; height: 2px; left: 17px; top: 1px; opacity: .35; }
.ssi-constellation i:nth-child(7) { width: 2px; height: 2px; left: 18px; top: 24px; opacity: .35; }
.auth-eyebrow { margin: 0 0 10px; color: var(--muted); font-size: 10px; font-weight: 650; letter-spacing: .14em; }
.auth-card h1 { margin: 0; font-size: 32px; font-weight: 620; letter-spacing: -.055em; }
.auth-copy { max-width: 340px; margin: 12px 0 26px; color: var(--muted); font-size: 14px; line-height: 1.6; }
.auth-status { min-height: 44px; margin: 0; color: var(--muted); font-size: 12px; }
.auth-required .auth-status { display: none; }
.google-signin { min-height: 44px; }
.auth-loading .google-signin, .auth-loading .auth-footnote { display: none; }
.auth-error { width: 100%; margin: 0 0 14px; padding: 10px 12px; border: 1px solid color-mix(in oklab, #c9302c 25%, transparent); border-radius: var(--radius); background: color-mix(in oklab, #c9302c 8%, transparent); color: #b42318; font-size: 12px; line-height: 1.45; }
.dark .auth-error { color: #ff8f87; }
.auth-footnote { margin: 18px 0 0; color: var(--muted); font-size: 11px; }
.auth-watermark { position: absolute; right: -180px; bottom: -230px; width: min(72vw, 900px); aspect-ratio: 1; border: 1px solid var(--border); border-radius: 50%; opacity: .42; }
.auth-watermark::before, .auth-watermark::after { content: ""; position: absolute; inset: 13%; border: 1px solid var(--border); border-radius: 50%; }
.auth-watermark::after { inset: 29%; }
.auth-watermark .orbit { position: absolute; width: 7px; height: 7px; border-radius: 50%; background: var(--foreground); opacity: .18; }
.auth-watermark .o1 { left: 19%; top: 20%; } .auth-watermark .o2 { left: 46%; top: 8%; } .auth-watermark .o3 { right: 17%; top: 24%; }
.auth-watermark .o4 { left: 8%; top: 51%; } .auth-watermark .o5 { left: 49%; top: 48%; width: 12px; height: 12px; opacity: .28; }
.auth-watermark .o6 { right: 7%; top: 56%; } .auth-watermark .o7 { left: 20%; bottom: 18%; } .auth-watermark .o8 { left: 52%; bottom: 7%; }
.auth-watermark .o9 { right: 18%; bottom: 20%; }

#titlebar { height: 58px; gap: 18px; padding: 0 18px; background: var(--background); border-color: var(--border); }
.brand-lockup { gap: 11px; }
.header-mark { position: relative; display: block; width: 25px; height: 25px; color: var(--foreground); }
.header-mark i:nth-child(1) { width: 5px; height: 5px; left: 10px; top: 10px; }
.header-mark i:nth-child(2) { width: 3px; height: 3px; left: 2px; top: 4px; opacity: .6; }
.header-mark i:nth-child(3) { width: 3px; height: 3px; right: 2px; top: 3px; opacity: .45; }
.header-mark i:nth-child(4) { width: 3px; height: 3px; left: 3px; bottom: 2px; opacity: .4; }
.header-mark i:nth-child(5) { width: 3px; height: 3px; right: 1px; bottom: 4px; opacity: .6; }
.header-mark i:nth-child(6) { width: 2px; height: 2px; left: 12px; top: 1px; opacity: .4; }
.app-identity { display: flex; flex-direction: column; gap: 1px; }
.brand-name { font-size: 14px; font-weight: 620; letter-spacing: -.025em; }
.brand-tagline { padding: 0; border: 0; color: var(--muted); font-size: 10px; }
#title-text { padding-left: 18px; border-left: 1px solid var(--border); color: var(--muted); }
#titlebar .title-right { display: flex; align-items: center; gap: 8px; margin-left: auto; color: var(--muted); background: none; border: 0; padding: 0; }
.workspace-badge { padding: 4px 8px; border: 1px solid var(--border); border-radius: 999px; background: var(--secondary); color: var(--muted); font-size: 10px; }
.header-action { height: 32px; border: 1px solid var(--border); border-radius: 8px; background: var(--background); color: var(--foreground); padding: 0 10px; cursor: pointer; }
.header-action:hover { background: var(--secondary); }
#theme-toggle { width: 32px; padding: 0; font-size: 16px; }
.current-user { max-width: 180px; overflow: hidden; color: var(--muted); font-size: 10px; text-overflow: ellipsis; white-space: nowrap; }
.signout-button { font-size: 10px; }

#ribbon { background: var(--background); border-color: var(--border); }
.ribbon-tabs { gap: 20px; padding: 0 18px; background: var(--background); border-color: var(--border); }
.rtab { min-height: 38px; padding: 0; color: var(--muted); }
.rtab.active { color: var(--foreground); }
.rtab.active::after { background: var(--foreground); }
.ribbon-panels { height: 94px; padding: 8px 10px 6px; background: color-mix(in oklab, var(--background) 78%, var(--secondary)); }
.rgroup { border-color: var(--border); padding: 0 10px; }
.rgroup-title { color: var(--muted); font-size: 9px; letter-spacing: .04em; text-transform: uppercase; }
.rbtn { border-radius: 7px; }
.rbtn:hover { background: var(--secondary); border-color: var(--border); }
.rbtn:active, .rbtn.active, .rbtn.toggle.on { background: var(--secondary); border-color: var(--input); }
.rbtn.big .ico { filter: grayscale(1); opacity: .78; }
.rform label, .support-text { color: var(--foreground); }
input, select, textarea { color: var(--foreground); }
.rform input[type=text], .rform input[type=number], .rform select,
.process-editor-toolbar input, .process-editor-toolbar select, .process-step input, .process-step select,
.results-toolbar input, .schedule-repeat input, .experiment-toolbar input, .experiment-toolbar select {
  min-height: 27px; border: 1px solid var(--input); border-radius: 7px; background: var(--background); color: var(--foreground); padding: 3px 7px;
}

#main { background: var(--background); }
.panel, .views, #bottom, .process-step, .tile, .scenario-dialog, .scenario-card { background: var(--card); color: var(--foreground); }
.panel-title, .lib-header, .pgroup, .btabs, .subtabs, .process-toolbar,
.data-toolbar, .table-toolbar, .experiment-toolbar, .results-toolbar, .data-sidebar, .proc-list,
.process-editor-toolbar, .step-palette, .process-step .step-title, .props-desc, .scenario-footer {
  background: var(--secondary); color: var(--foreground); border-color: var(--border);
}
.lib-header { background: transparent; }
.lib-item:hover, .proc-list button:hover, .data-list button:hover, .tree .node:hover, .prow:hover { background: var(--secondary); }
.lib-item.active, .proc-list button.active, .data-list button.active, .tree .node.sel { background: var(--secondary); border-color: var(--input); color: var(--foreground); }
.model-tabs { margin-bottom: 2px; }
.mtab { color: var(--muted); }
.mtab.active { color: var(--foreground); }
.mtab.active::after { background: var(--foreground); }
.tbl th { background: var(--secondary); border-color: var(--border); color: var(--foreground); }
.tbl td { border-color: var(--border); }
.tbl tr:nth-child(even) td { background: color-mix(in oklab, var(--card) 80%, var(--secondary)); }
.tbl td.pivot, .tbl td.blank { background: var(--secondary) !important; color: var(--foreground); }
.pgroup, .prow, .props-desc { border-color: var(--border); }
.prow .pname, .props-desc, .props-desc b, .schedule-repeat { color: var(--foreground); }
.prow .pval input, .prow .pval select { color: var(--foreground); }
.prow .pval input:hover, .prow .pval select:hover, .prow .pval input:focus, .prow .pval select:focus { background: var(--background); border-color: var(--input); }
.btab.active { background: var(--card); color: var(--foreground); }
.tile .tval { color: var(--foreground); }
.data-note, .lookup-preview, .process-help { background: var(--secondary); border-color: var(--border); color: var(--foreground); }
.scenario-dialog { border-color: var(--border); border-radius: 14px; }
.scenario-card { border-color: var(--border); border-radius: var(--radius); }
.scenario-card:hover { border-color: var(--ring); }
.dialog-close { background: var(--background); border-color: var(--border); color: var(--muted); }
.scenario-load { background: var(--primary); border-color: var(--primary); color: var(--primary-foreground); }
.scenario-load:hover { opacity: .88; background: var(--primary); }
.scenario-tags span { background: var(--secondary); }
.fm-right { background: var(--background); color: var(--foreground); }

.dark .fm-left { background: #090909; }
.dark .scenario-dialog { box-shadow: 0 30px 80px rgba(0,0,0,.6); }
.dark .dialog-backdrop { background: rgba(0,0,0,.7); }
.dark .views, .dark #bottom { border-color: var(--border); }
.dark .view:not([data-view=facility]), .dark .bpane { background: var(--card); }
.dark .table-editor input:focus { background: var(--background); color: var(--foreground); }
.dark kbd { background: var(--secondary); color: var(--foreground); border-color: var(--input); }
.dark #hud { background: rgba(30,30,30,.88); color: var(--foreground); border-color: var(--border); }

@media (max-width: 900px) {
  #titlebar .title-right { display: flex; }
  .workspace-badge, .current-user, .signout-button { display: none; }
}