/* ─────────────────────────────────────────────────────────────────
   NACK'IN_ demo lab: shared components on top of foundations.css
   Paper + ink + one ochre accent, mono chrome, sharp corners.
   Every demo page uses: .dl-top (header), .dl-intro, .dl-grid, .panel,
   .btn, .chip, .trace, .table, .kpi. Demo-specific CSS lives in
   static/<demo>/<demo>.css.
   ───────────────────────────────────────────────────────────────── */

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body { background: var(--paper); color: var(--ink); font-family: var(--font-mono); font-size: 14px; line-height: 1.5; -webkit-font-smoothing: antialiased; }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }
.wrap { max-width: 1400px; margin: 0 auto; padding: 0 28px; }
[hidden] { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }

/* Header */
.dl-top { border-bottom: 1px solid var(--line); background: rgba(250,250,248,0.96); position: sticky; top: 0; z-index: 40; }
.dl-top .row { display: flex; align-items: center; gap: 24px; padding: 14px 28px; max-width: 1400px; margin: 0 auto; }
.dl-top .brand img { height: 20px; display: block; }
.dl-top .lab { font-size: 11px; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; color: var(--gold); }
.dl-top nav { display: flex; gap: 18px; flex-wrap: wrap; margin-left: 12px; }
.dl-top nav a { font-size: 11px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; text-decoration: none; padding: 4px 0; border-bottom: 2px solid transparent; }
.dl-top nav a:hover, .dl-top nav a[aria-current="page"] { border-bottom-color: var(--gold); }
.dl-top .spacer { flex: 1; }
.badge-invented { font-size: 10px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-2); border: 1px solid var(--line-soft); padding: 4px 8px; white-space: nowrap; }
.badge-live { font-size: 10px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; padding: 4px 8px; white-space: nowrap; border: 1px solid currentColor; }
.badge-live.on { color: var(--signal); }
.badge-live.off { color: var(--ink-3); }

/* Intro band of each demo */
.dl-intro { padding: 36px 0 24px; border-bottom: 1px solid var(--line); }
.dl-intro .kicker { font-size: 11px; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; color: var(--gold); }
.dl-intro h1 { font-family: var(--font-display); font-weight: 700; font-size: clamp(26px, 3.4vw, 44px); line-height: 1; letter-spacing: -0.03em; text-transform: uppercase; margin: 10px 0 14px; }
.dl-intro p { margin: 0; max-width: 78ch; color: var(--ink-2); font-size: 14px; line-height: 1.6; }
.dl-intro .company { margin-top: 12px; font-size: 12px; color: var(--ink-3); }

/* Layout */
.dl-main { padding: 24px 0 64px; }
.dl-grid { display: grid; gap: 20px; grid-template-columns: repeat(12, 1fr); }
.span-3 { grid-column: span 3; } .span-4 { grid-column: span 4; } .span-5 { grid-column: span 5; }
.span-6 { grid-column: span 6; } .span-7 { grid-column: span 7; } .span-8 { grid-column: span 8; }
.span-9 { grid-column: span 9; } .span-12 { grid-column: span 12; }
@media (max-width: 1000px) { .dl-grid > * { grid-column: span 12 !important; } }

/* Panels */
.panel { border: 1px solid var(--line); background: var(--paper); min-width: 0; }
.panel > .hd { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 12px 16px; border-bottom: 1px solid var(--line-soft); }
.panel > .hd h2, .panel > .hd h3 { margin: 0; font-size: 11px; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; }
.panel > .bd { padding: 16px; }
.panel.dark { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.panel.dark > .hd { border-bottom-color: rgba(255,255,255,0.16); }
.panel.dark .muted { color: rgba(244,241,234,0.6); }
.muted { color: var(--ink-3); }

/* Buttons */
.btn { font-family: inherit; font-weight: 700; text-transform: uppercase; letter-spacing: 0.12em; font-size: 11px; height: 38px; padding: 0 16px;
  display: inline-flex; align-items: center; gap: 8px; border: 1px solid var(--ink); background: transparent; color: var(--ink); cursor: pointer; text-decoration: none; }
.btn:hover { background: var(--ink); color: var(--paper); }
.btn.primary { background: var(--ink); color: var(--paper); }
.btn.primary:hover { background: var(--gold); border-color: var(--gold); color: var(--ink); }
.btn.gold { background: var(--gold); border-color: var(--gold); color: var(--ink); }
.btn.small { height: 30px; padding: 0 10px; font-size: 10px; }
.btn[disabled] { opacity: 0.45; cursor: not-allowed; }
.panel.dark .btn { color: var(--paper); border-color: rgba(255,255,255,0.4); }
.panel.dark .btn:hover { border-color: var(--paper); background: transparent; }
.suggest { display: flex; flex-wrap: wrap; gap: 8px; }
.suggest button { font-family: inherit; font-size: 12px; text-align: left; padding: 8px 10px; border: 1px dashed var(--line-soft); background: var(--paper-2); cursor: pointer; color: var(--ink); }
.suggest button:hover { border-color: var(--ink); }

/* Chips for states */
.chip { display: inline-block; font-size: 9.5px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; padding: 3px 7px; border: 1px solid currentColor; white-space: nowrap; }
.chip.ok { color: var(--signal); } .chip.warn { color: var(--warn); } .chip.err { color: var(--err); }
.chip.gold { color: var(--gold-deep); } .chip.ink { color: var(--ink); } .chip.mute { color: var(--ink-3); }

/* Forms */
input[type=text], input[type=search], textarea, select { font-family: inherit; font-size: 14px; padding: 10px 12px; border: 1px solid var(--line-soft); background: var(--paper); color: var(--ink); border-radius: 0; width: 100%; }
input:focus, textarea:focus, select:focus { outline: none; border-color: var(--ink); box-shadow: inset 0 0 0 1px var(--gold); }

/* Tables */
.table { width: 100%; border-collapse: collapse; font-size: 12.5px; }
.table th { text-align: left; font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-3); font-weight: 700; padding: 8px 10px; border-bottom: 1px solid var(--line); white-space: nowrap; }
.table td { padding: 8px 10px; border-bottom: 1px solid var(--line-softer); vertical-align: top; }
.table tr:hover td { background: var(--paper-2); }
.table td.num, .table th.num { text-align: right; font-variant-numeric: tabular-nums; }
.table-wrap { overflow-x: auto; }

/* KPI tiles */
.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 1px; background: var(--line-soft); border: 1px solid var(--line); }
.kpi { background: var(--paper); padding: 16px; }
.kpi .l { font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-3); font-weight: 700; }
.kpi .v { font-family: var(--font-display); font-weight: 700; font-size: 26px; letter-spacing: -0.02em; margin-top: 6px; }
.kpi .s { font-size: 11px; color: var(--ink-2); margin-top: 4px; }

/* Trace of what the AI read and did */
.trace { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.trace li { border-left: 2px solid var(--line-soft); padding: 2px 0 2px 10px; font-size: 12px; }
.trace li .t { font-weight: 700; color: var(--gold-deep); }
.trace li.err { border-left-color: var(--err); }
.trace li pre { margin: 6px 0 0; white-space: pre-wrap; word-break: break-word; font-size: 11px; color: var(--ink-2); background: var(--paper-2); padding: 8px; max-height: 220px; overflow: auto; }
.panel.dark .trace li { border-left-color: rgba(255,255,255,0.2); }
.panel.dark .trace li pre { background: rgba(255,255,255,0.06); color: rgba(244,241,234,0.85); }

/* Chat */
.chatlog { display: flex; flex-direction: column; gap: 12px; min-height: 320px; max-height: 60vh; overflow-y: auto; padding: 16px; }
.msg { max-width: 82%; padding: 10px 14px; font-size: 13.5px; line-height: 1.55; white-space: pre-wrap; }
.msg.user { align-self: flex-end; background: var(--ink); color: var(--paper); }
.msg.bot { align-self: flex-start; background: var(--paper-2); border-left: 3px solid var(--gold); }
.msg.sys { align-self: center; font-size: 11px; color: var(--ink-3); background: none; }
.composer { display: flex; gap: 8px; padding: 12px 16px; border-top: 1px solid var(--line-soft); }
.ai-notice { font-size: 11px; color: var(--ink-2); background: var(--signal-ochre-tint); border-left: 3px solid var(--gold); padding: 8px 12px; }

/* Approval card */
.approval { border: 1px solid var(--gold); background: var(--signal-ochre-tint); padding: 14px; display: grid; gap: 10px; }
.approval .actions { display: flex; gap: 8px; }

/* Footer */
.dl-foot { border-top: 1px solid var(--line); padding: 20px 0 32px; font-size: 11px; color: var(--ink-3); }

@media (max-width: 760px) {
  .dl-top { position: static; }
  .dl-top .row { flex-wrap: wrap; gap: 10px; padding: 12px 18px; }
  .dl-top nav { margin-left: 0; gap: 12px; }
  .wrap { padding: 0 18px; }
}
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation: none !important; transition: none !important; } }