/* AM porous grinding wheel: dark-SaaS surface of data-driven-models.cloud (cisma-webapp-standards tokens). */
:root {
  --bg-base: #0b1220;
  --bg-surface: #131c2e;
  --bg-elevated: #1a2540;
  --bg-overlay: rgba(11, 18, 32, 0.92);
  --fg-primary: #e8edf5;
  --fg-secondary: #9aa5b8;
  --fg-muted: #6b7588;
  --fg-disabled: #4a5366;
  --accent-50: #fbf3ee;
  --accent-100: #f4dcc8;
  --accent-400: #c6743a;
  --accent-500: #b65a1f;
  --accent-600: #9a4716;
  --accent-700: #763510;
  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-default: rgba(255, 255, 255, 0.12);
  --border-strong: rgba(255, 255, 255, 0.20);
  --cite-pulse: rgba(198, 116, 58, 0.18);
  --status-pass: #2A8A3F;
  --status-warn: #C0A12D;
  --status-fail: #C0272D;
  --status-info: #1F4B99;
  --radius: 6px;
  --gutter: 24px;
}

* { box-sizing: border-box; }
html { color-scheme: dark; }
body {
  margin: 0; background: var(--bg-base); color: var(--fg-primary);
  font-family: 'IBM Plex Sans', system-ui, sans-serif; font-weight: 400; letter-spacing: 0.005em;
  line-height: 1.6; font-size: 16px;
}
h1, h2, h3, h4 { font-family: 'IBM Plex Serif', Georgia, serif; font-weight: 500; line-height: 1.25; margin: 0 0 .6em; }
h1 { font-size: 2.1rem; } h2 { font-size: 1.55rem; } h3 { font-size: 1.2rem; } h4 { font-size: 1.02rem; }
code, pre, .mono, kbd { font-family: 'IBM Plex Mono', Menlo, monospace; font-size: .9em; }
pre { background: var(--bg-surface); border: 1px solid var(--border-subtle); border-radius: var(--radius); padding: 14px; overflow-x: auto; }
a { color: var(--accent-400); text-decoration: none; }
a:hover { text-decoration: underline; }
p { margin: 0 0 1em; }
.prose { max-width: 72ch; }
.muted { color: var(--fg-secondary); }
.small { font-size: .86rem; }
.eyebrow { font-family: 'IBM Plex Mono', monospace; text-transform: uppercase; letter-spacing: .12em; font-size: .72rem; color: var(--accent-400); margin-bottom: .4em; display: block; }

/* layout */
.topbar { position: sticky; top: 0; z-index: 20; background: var(--bg-overlay); backdrop-filter: blur(6px); border-bottom: 1px solid var(--border-subtle); }
.topbar-inner { max-width: 1280px; margin: 0 auto; display: flex; align-items: center; gap: 20px; padding: 10px 16px; flex-wrap: wrap; }
.brand { font-family: 'IBM Plex Serif', serif; font-weight: 600; color: var(--fg-primary); white-space: nowrap; }
.brand span { color: var(--accent-400); }
.nav { display: flex; gap: 4px; flex-wrap: wrap; flex: 1; }
.nav a { color: var(--fg-secondary); padding: 6px 10px; border-radius: var(--radius); font-size: .92rem; }
.nav a:hover { color: var(--fg-primary); background: var(--bg-elevated); text-decoration: none; }
@media (max-width: 760px) {
  .topbar { position: static; }
  .topbar-inner { gap: 8px; }
  .nav { flex-wrap: nowrap; overflow-x: auto; order: 3; flex-basis: 100%; }
  .nav a { white-space: nowrap; }
  .userbox { margin-left: auto; }
}
.nav a.active { color: var(--fg-primary); background: var(--bg-surface); box-shadow: inset 0 -2px 0 var(--accent-400); }
.userbox { display: flex; gap: 8px; align-items: center; font-size: .86rem; color: var(--fg-secondary); }
.userbox form { margin: 0; }
main { max-width: 1280px; margin: 0 auto; padding: 28px 16px 64px; }
section { padding: 28px 0; border-bottom: 1px dashed var(--border-default); }
section:last-child { border-bottom: 0; }
footer { max-width: 1280px; margin: 0 auto; padding: 24px 16px 40px; color: var(--fg-muted); font-size: .82rem; border-top: 1px dashed var(--border-default); }

.grid { display: grid; gap: var(--gutter); grid-template-columns: repeat(12, 1fr); }
.col-12 { grid-column: span 12; } .col-9 { grid-column: span 9; } .col-8 { grid-column: span 8; } .col-7 { grid-column: span 7; } .col-6 { grid-column: span 6; }
.col-5 { grid-column: span 5; } .col-2 { grid-column: span 2; } .col-4 { grid-column: span 4; } .col-3 { grid-column: span 3; }
@media (max-width: 1000px) { .col-9, .col-8, .col-7, .col-6, .col-5, .col-4 { grid-column: span 12; } .col-3 { grid-column: span 6; } .col-2 { grid-column: span 4; } }
@media (max-width: 600px) { .col-3 { grid-column: span 12; } .col-2 { grid-column: span 6; } .grid { gap: 16px; } h1 { font-size: 1.6rem; } }

.card { background: var(--bg-surface); border: 1px solid var(--border-subtle); border-radius: var(--radius); padding: 18px 20px; min-width: 0; }
.card.elevated { background: var(--bg-elevated); }
.card h3 { margin-top: 0; }
.kpi { display: flex; flex-direction: column; gap: 2px; }
.kpi .value { font-family: 'IBM Plex Mono', monospace; font-size: 1.6rem; color: var(--accent-100); font-variant-numeric: tabular-nums; }
.kpi .label { color: var(--fg-secondary); font-size: .86rem; }

figure { margin: 0; }
figure img { width: 100%; height: auto; border-radius: var(--radius); border: 1px solid var(--border-subtle); background: #fff; display: block; }
figure img.dark { background: transparent; }
figcaption { font-family: 'IBM Plex Mono', monospace; font-size: .76rem; color: var(--fg-muted); margin-top: 6px; line-height: 1.45; }
.missing { padding: 30px; text-align: center; border: 1px dashed var(--border-default); border-radius: var(--radius); color: var(--fg-muted); font-size: .85rem; }

table { border-collapse: collapse; width: 100%; font-size: .88rem; font-variant-numeric: tabular-nums; }
th, td { text-align: left; padding: 6px 10px; border-bottom: 1px solid var(--border-subtle); vertical-align: top; }
th { color: var(--fg-secondary); font-weight: 500; font-size: .8rem; text-transform: uppercase; letter-spacing: .04em; }
td.num, th.num { text-align: right; font-family: 'IBM Plex Mono', monospace; }
tr.hl td { background: rgba(198, 116, 58, .10); }
.table-wrap { overflow-x: auto; }

.tag { display: inline-block; font-family: 'IBM Plex Mono', monospace; font-size: .7rem; padding: 1px 7px; border-radius: 3px; border: 1px solid var(--border-default); color: var(--fg-secondary); text-transform: uppercase; letter-spacing: .06em; vertical-align: middle; }
.tag.assumed { color: #e9c46a; border-color: rgba(192, 161, 45, .6); }
.tag.placeholder { color: #f4a261; border-color: rgba(198, 116, 58, .7); }
.tag.ok { color: #7ed491; border-color: rgba(42, 138, 63, .7); }
.tag.neg { color: #f28b82; border-color: rgba(192, 39, 45, .7); }
.callout { border-left: 3px solid var(--accent-400); background: var(--bg-surface); padding: 12px 16px; border-radius: 0 var(--radius) var(--radius) 0; margin: 12px 0; }
.callout.warn { border-left-color: var(--status-warn); }
.callout.info { border-left-color: var(--status-info); }

/* forms and controls */
label { display: block; font-size: .84rem; color: var(--fg-secondary); margin: 10px 0 4px; }
input[type=text], input[type=password], input[type=number], input[type=date], select {
  width: 100%; background: var(--bg-base); color: var(--fg-primary); border: 1px solid var(--border-default);
  border-radius: var(--radius); padding: 8px 10px; font: inherit; font-size: .92rem;
}
input:focus, select:focus, button:focus-visible, a:focus-visible { outline: 2px solid var(--accent-400); outline-offset: 1px; }
input[type=range] { width: 100%; accent-color: var(--accent-400); }
.range-row { display: grid; grid-template-columns: 1fr 76px; gap: 10px; align-items: center; }
.range-row output { font-family: 'IBM Plex Mono', monospace; font-size: .86rem; text-align: right; color: var(--accent-100); }
button, .btn {
  background: var(--accent-500); color: #fff; border: 0; border-radius: var(--radius); padding: 8px 16px; font: inherit;
  font-size: .9rem; cursor: pointer; font-weight: 500;
}
button:disabled { opacity: .45; cursor: not-allowed; }
button:hover, .btn:hover { background: var(--accent-400); text-decoration: none; }
button.ghost { background: transparent; border: 1px solid var(--border-default); color: var(--fg-secondary); }
button.ghost:hover { color: var(--fg-primary); border-color: var(--border-strong); }
button.danger { background: #8f1d22; }
.seg { display: inline-flex; border: 1px solid var(--border-default); border-radius: var(--radius); overflow: hidden; }
.seg button { background: transparent; color: var(--fg-secondary); border-radius: 0; padding: 6px 14px; }
.seg button.on { background: var(--accent-500); color: #fff; }
.inline-form { display: inline-flex; gap: 6px; align-items: center; margin: 0; }
.inline-form input { width: 180px; }
.alert { padding: 10px 14px; border-radius: var(--radius); margin: 10px 0; font-size: .9rem; }
.alert.err { background: rgba(192, 39, 45, .15); border: 1px solid rgba(192, 39, 45, .5); }
.alert.ok { background: rgba(42, 138, 63, .15); border: 1px solid rgba(42, 138, 63, .5); }

/* results */
.out-table td:first-child { color: var(--fg-secondary); }
.band { color: var(--fg-muted); font-size: .8rem; }
.bar { position: relative; height: 6px; background: var(--bg-base); border-radius: 3px; margin-top: 4px; }
.bar i { position: absolute; top: 0; bottom: 0; background: rgba(198, 116, 58, .45); border-radius: 3px; }
.bar b { position: absolute; top: -3px; width: 2px; height: 12px; background: var(--accent-100); }
.plot { width: 100%; min-height: 360px; }

/* multiscale chain diagram */
.chain { display: grid; grid-template-columns: repeat(6, 1fr); gap: 0; align-items: stretch; margin: 10px 0 4px; }
.chain .node { background: var(--bg-surface); border: 1px solid var(--border-default); border-radius: var(--radius); padding: 12px; position: relative; min-width: 0; }
.chain .node + .node { margin-left: 22px; }
.chain .node + .node::before { content: "\2192"; position: absolute; left: -20px; top: 40%; color: var(--accent-400); font-size: 1.1rem; }
.chain .node h4 { font-size: .95rem; margin-bottom: .2em; }
.chain .node .eyebrow { margin-bottom: .2em; }
.chain .node dl { margin: 0; font-size: .8rem; display: grid; grid-template-columns: auto auto; gap: 2px 8px; }
.chain .node dt { color: var(--fg-muted); }
.chain .node dd { margin: 0; text-align: right; font-family: 'IBM Plex Mono', monospace; color: var(--fg-primary); }
.chain .node.risk { border-color: var(--accent-500); }
@media (max-width: 1300px) { .chain { grid-template-columns: repeat(3, 1fr); gap: 14px; } .chain .node + .node { margin-left: 0; } .chain .node + .node::before { display: none; } }
@media (max-width: 800px) { .chain { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .chain { grid-template-columns: 1fr; } }

/* 3-D viewer */
.viewer-wrap { position: relative; width: 100%; height: min(70vh, 640px); background: radial-gradient(ellipse at center, #1b2742 0%, #0b1220 75%); border-radius: var(--radius); border: 1px solid var(--border-subtle); overflow: hidden; }
.viewer-wrap canvas { display: block; width: 100%; height: 100%; }
.viewer-hud { position: absolute; left: 12px; bottom: 10px; font-family: 'IBM Plex Mono', monospace; font-size: .75rem; color: var(--fg-secondary); pointer-events: none; }
.legend-bar { height: 10px; border-radius: 3px; background: linear-gradient(90deg, #30123b, #4686fb, #1ae4b6, #a2fc3c, #fabb39, #e4460a, #7a0403); }

/* login */
.login-wrap { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.login-card { width: 100%; max-width: 400px; }
.login-card h1 { font-size: 1.5rem; }

video { width: 100%; border-radius: var(--radius); border: 1px solid var(--border-subtle); background: #000; }
details summary { cursor: pointer; color: var(--fg-secondary); }