/* D Generation AI — product surface design system.
   Restrained editorial: warm neutral paper, one ink, one accent, strong type scale, calm density.
   No external fonts, no frameworks: the CSP allows only same-origin styles and scripts. */
:root {
  --paper: #faf8f5; --paper-2: #fffdfa; --paper-3: #f2eee8; --line: #e2dcd2; --line-2: #d3cabd;
  --ink: #1c1917; --ink-2: #57534e; --ink-3: #8b8378; --accent: #8a3c22; --accent-soft: #f6ece6;
  --ok: #2f6b4f; --ok-soft: #e8f2ec; --warn: #8a6a1f; --warn-soft: #f8f0dc; --stop: #9b2c2c; --stop-soft: #f9e9e9;
  --ai: #3b4a6b; --ai-soft: #eaeef6;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, "Times New Roman", serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --r: 10px; --r-sm: 6px; --shadow: 0 1px 2px rgba(28,25,23,.05), 0 8px 24px -16px rgba(28,25,23,.25);
  --nav-w: 232px; --head-h: 56px;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body { background: var(--paper); color: var(--ink); font: 15px/1.55 var(--sans); -webkit-font-smoothing: antialiased; }
h1, h2, h3, h4 { font-family: var(--serif); font-weight: 600; letter-spacing: -.01em; margin: 0; }
h1 { font-size: 26px; line-height: 1.2; } h2 { font-size: 19px; } h3 { font-size: 16px; } h4 { font-size: 14px; font-family: var(--sans); font-weight: 600; }
p { margin: 0 0 8px; } a { color: inherit; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 3px; }
.skip { position: absolute; left: -9999px; top: 0; background: var(--ink); color: var(--paper-2); padding: 10px 14px; z-index: 100; }
.skip:focus { left: 8px; top: 8px; }
.hidden { display: none !important; }
.muted { color: var(--ink-2); } .dim { color: var(--ink-3); } .small { font-size: 13px; } .tiny { font-size: 12px; }
.mono { font-family: var(--mono); font-size: 12px; color: var(--ink-3); }
.stack { display: flex; flex-direction: column; gap: 12px; } .stack-sm { display: flex; flex-direction: column; gap: 6px; }
.row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; } .row-tight { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.spread { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.grid { display: grid; gap: 14px; } .grid-2 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); } .grid-3 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }

/* shell */
.shell { display: grid; grid-template-columns: var(--nav-w) 1fr; min-height: 100vh; }
.nav { background: var(--paper-3); border-right: 1px solid var(--line); padding: 14px 12px; position: sticky; top: 0; height: 100vh; overflow-y: auto; }
.brand { display: flex; align-items: baseline; gap: 8px; padding: 6px 8px 16px; }
.brand b { font-family: var(--serif); font-size: 17px; } .brand span { font-size: 11px; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3); }
.nav a { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 8px 10px; border-radius: var(--r-sm); text-decoration: none; color: var(--ink-2); font-size: 14px; }
.nav a:hover { background: var(--paper-2); color: var(--ink); }
.nav a[aria-current="page"] { background: var(--paper-2); color: var(--ink); font-weight: 600; box-shadow: inset 2px 0 0 var(--accent); }
.nav .count { font-size: 11px; background: var(--accent-soft); color: var(--accent); border-radius: 9px; padding: 1px 7px; font-variant-numeric: tabular-nums; }
.nav-group { margin-top: 14px; padding: 0 10px 4px; font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); }
.main { min-width: 0; display: flex; flex-direction: column; }
.topbar { height: var(--head-h); border-bottom: 1px solid var(--line); display: flex; align-items: center; gap: 12px; padding: 0 20px; background: var(--paper-2); position: sticky; top: 0; z-index: 20; }
.topbar .crumbs { color: var(--ink-3); font-size: 13px; display: flex; gap: 6px; align-items: center; min-width: 0; }
.topbar .crumbs b { color: var(--ink); font-weight: 600; }
.page { padding: 22px 24px 64px; max-width: 1220px; width: 100%; }
.page > header { margin-bottom: 18px; }
.page > header .sub { color: var(--ink-2); font-size: 14px; margin-top: 4px; }

/* surfaces */
.card { background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--r); padding: 14px 16px; box-shadow: var(--shadow); }
.card > header { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; margin-bottom: 10px; }
.panel { background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--r); }
.panel > .panel-head { padding: 12px 16px; border-bottom: 1px solid var(--line); display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.panel > .panel-body { padding: 14px 16px; }
.divide > * + * { border-top: 1px solid var(--line); }
.list-row { padding: 12px 16px; display: flex; gap: 12px; align-items: flex-start; }
.list-row:hover { background: var(--paper); }

/* chips, badges */
.chip { display: inline-flex; align-items: center; gap: 5px; font-size: 12px; padding: 2px 9px; border-radius: 99px; border: 1px solid var(--line-2); background: var(--paper); color: var(--ink-2); white-space: nowrap; }
.chip.ok { background: var(--ok-soft); border-color: transparent; color: var(--ok); }
.chip.warn { background: var(--warn-soft); border-color: transparent; color: var(--warn); }
.chip.stop { background: var(--stop-soft); border-color: transparent; color: var(--stop); }
.chip.ai { background: var(--ai-soft); border-color: transparent; color: var(--ai); }
.chip.accent { background: var(--accent-soft); border-color: transparent; color: var(--accent); }
.chip.solid { background: var(--ink); color: var(--paper-2); border-color: transparent; }
.dot { width: 7px; height: 7px; border-radius: 50%; background: currentColor; display: inline-block; }
.kv { display: grid; grid-template-columns: minmax(120px, max-content) 1fr; gap: 4px 14px; font-size: 14px; }
.kv dt { color: var(--ink-3); } .kv dd { margin: 0; }

/* buttons */
button, .btn { font: inherit; font-size: 14px; border-radius: var(--r-sm); border: 1px solid var(--line-2); background: var(--paper-2); color: var(--ink); padding: 7px 12px; cursor: pointer; display: inline-flex; align-items: center; gap: 7px; text-decoration: none; }
button:hover:not(:disabled), .btn:hover { background: var(--paper-3); }
button.primary { background: var(--ink); color: var(--paper-2); border-color: var(--ink); }
button.primary:hover:not(:disabled) { background: #302b27; }
button.quiet { border-color: transparent; background: transparent; color: var(--ink-2); padding: 5px 8px; }
button.quiet:hover:not(:disabled) { background: var(--paper-3); color: var(--ink); }
button:disabled { opacity: .55; cursor: not-allowed; }
button.ai { background: var(--ai-soft); border-color: transparent; color: var(--ai); }
.btn-row { display: flex; gap: 8px; flex-wrap: wrap; }

/* forms */
label { font-size: 13px; color: var(--ink-2); display: block; margin-bottom: 4px; }
input[type=text], input[type=search], input[type=date], select, textarea { font: inherit; font-size: 14px; width: 100%; padding: 7px 10px; border: 1px solid var(--line-2); border-radius: var(--r-sm); background: var(--paper-2); color: var(--ink); }
textarea { min-height: 80px; resize: vertical; }
fieldset { border: 1px solid var(--line); border-radius: var(--r); padding: 12px 14px; }

/* the seven canonical components */
.action-card { display: grid; grid-template-columns: 4px 1fr auto; gap: 0 14px; align-items: start; background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--r); padding: 12px 14px 12px 0; overflow: hidden; }
.action-card .bar { grid-row: 1 / -1; align-self: stretch; background: var(--line-2); }
.action-card.p-URGENT .bar { background: var(--stop); } .action-card.p-HIGH .bar { background: var(--accent); }
.action-card.p-NORMAL .bar { background: var(--line-2); } .action-card.p-LOW .bar { background: var(--paper-3); }
.action-card .title { font-weight: 600; }
.action-card .why { color: var(--ink-2); font-size: 13px; margin-top: 3px; }
.action-card .meta { margin-top: 8px; }
.action-card .side { text-align: right; display: flex; flex-direction: column; gap: 6px; align-items: flex-end; padding-top: 2px; }
.gate-note { font-size: 12px; color: var(--warn); background: var(--warn-soft); border-radius: var(--r-sm); padding: 5px 9px; margin-top: 8px; display: inline-flex; gap: 6px; align-items: flex-start; }
.insight { border-left: 3px solid var(--ai); }
.insight .lead { font-size: 11px; letter-spacing: .09em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 2px; }
.insight .block + .block { margin-top: 10px; }
.caveat { font-size: 12px; color: var(--warn); }
details.evidence { margin-top: 10px; border-top: 1px dashed var(--line-2); padding-top: 8px; }
details.evidence > summary { cursor: pointer; font-size: 13px; color: var(--accent); list-style: none; }
details.evidence > summary::-webkit-details-marker { display: none; }
details.evidence > summary::before { content: "▸ "; }
details.evidence[open] > summary::before { content: "▾ "; }
details.evidence .ev { font-size: 13px; padding: 6px 0; border-bottom: 1px solid var(--line); }
.gate { border: 1px solid var(--warn); background: var(--warn-soft); border-radius: var(--r); padding: 10px 12px; display: flex; gap: 10px; align-items: flex-start; }
.gate .who { font-weight: 600; color: var(--warn); }
.dist { display: flex; height: 10px; border-radius: 99px; overflow: hidden; background: var(--paper-3); border: 1px solid var(--line); }
.dist span { display: block; height: 100%; }
.dist-legend { display: flex; flex-wrap: wrap; gap: 6px 14px; margin-top: 8px; font-size: 13px; }
.dist-legend i { width: 9px; height: 9px; border-radius: 2px; display: inline-block; margin-right: 6px; }
.lineage { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; font-size: 13px; color: var(--ink-2); background: var(--paper-3); border-radius: var(--r-sm); padding: 6px 10px; }
.lineage b { color: var(--ink); font-weight: 600; } .lineage .arrow { color: var(--ink-3); }
.scope-banner { display: flex; align-items: center; gap: 10px; background: var(--accent-soft); border: 1px solid #e8d7cd; border-radius: var(--r); padding: 8px 12px; font-size: 13px; }
.scope-banner b { font-family: var(--serif); font-size: 15px; }

/* tabs */
.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--line); overflow-x: auto; margin-bottom: 16px; }
.tabs a { padding: 8px 12px; font-size: 14px; color: var(--ink-2); text-decoration: none; border-bottom: 2px solid transparent; white-space: nowrap; }
.tabs a:hover { color: var(--ink); }
.tabs a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--accent); font-weight: 600; }

/* tables */
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th { text-align: left; font-weight: 600; font-size: 12px; letter-spacing: .04em; text-transform: uppercase; color: var(--ink-3); padding: 8px 12px; border-bottom: 1px solid var(--line); }
td { padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
tbody tr:hover { background: var(--paper); }
.num { font-variant-numeric: tabular-nums; }

/* states */
.empty { border: 1px dashed var(--line-2); border-radius: var(--r); padding: 28px 20px; text-align: center; color: var(--ink-2); background: var(--paper-2); }
.empty h3 { margin-bottom: 6px; } .empty .btn-row { justify-content: center; margin-top: 12px; }
.loading { padding: 20px; color: var(--ink-3); }
.skeleton { background: linear-gradient(90deg, var(--paper-3), var(--paper-2), var(--paper-3)); background-size: 200% 100%; animation: sk 1.2s linear infinite; border-radius: var(--r-sm); height: 14px; }
@keyframes sk { to { background-position: -200% 0; } }
@media (prefers-reduced-motion: reduce) { .skeleton { animation: none; } }
.error-box { border: 1px solid var(--stop); background: var(--stop-soft); color: var(--stop); border-radius: var(--r); padding: 14px 16px; }
.toast-region { position: fixed; right: 18px; bottom: 18px; display: flex; flex-direction: column; gap: 8px; z-index: 60; }
.toast { background: var(--ink); color: var(--paper-2); padding: 10px 14px; border-radius: var(--r-sm); box-shadow: var(--shadow); font-size: 14px; max-width: 380px; }
.toast.bad { background: var(--stop); }

/* summary strip */
.summary { display: grid; grid-template-columns: repeat(auto-fit, minmax(132px, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; }
.summary div { background: var(--paper-2); padding: 12px 14px; }
.summary .n { font-family: var(--serif); font-size: 24px; line-height: 1.1; }
.summary .l { font-size: 12px; color: var(--ink-2); margin-top: 2px; }

/* copilot */
.chat { display: flex; flex-direction: column; gap: 12px; }
.msg { max-width: 760px; } .msg.me { align-self: flex-end; background: var(--ink); color: var(--paper-2); border-radius: var(--r); padding: 10px 14px; }
.preview { border: 1px dashed var(--ai); background: var(--ai-soft); border-radius: var(--r); padding: 12px 14px; }
.suggest { display: flex; gap: 8px; flex-wrap: wrap; }
.suggest button { font-size: 13px; }

/* sign-in */
.signin { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.signin .card { width: min(420px, 100%); }

@media (max-width: 900px) {
  .shell { grid-template-columns: 1fr; }
  .nav { position: static; height: auto; border-right: 0; border-bottom: 1px solid var(--line); display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 2px; }
  .nav .brand { grid-column: 1 / -1; padding-bottom: 6px; } .nav-group { grid-column: 1 / -1; }
  .page { padding: 16px 14px 48px; }
  .action-card { grid-template-columns: 4px 1fr; } .action-card .side { grid-column: 2; text-align: left; align-items: flex-start; }
}