/* AI CAD Audit US — hosted review workspace. Desktop-first, dark-capable. */
:root {
  --bg: #f5f6f4; --surface: #ffffff; --surface-2: #eef0ec; --line: #d9ddd6;
  --ink: #17221d; --muted: #5c6b62; --faint: #8a978d;
  --green: #1c5a43; --green-ink: #10402f; --accent: #1c5a43;
  --red: #b23b2e; --amber: #9a6415; --blue: #23557d; --ok: #1c7a53;
  --chip: #e7ebe4; --radius: 8px; --mono: ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
:root[data-theme="dark"], :root[data-theme="auto"] {
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root[data-theme="auto"] {
    --bg: #10161a; --surface: #171f24; --surface-2: #1e272d; --line: #2c363d;
    --ink: #e7ecea; --muted: #9fb0a9; --faint: #7c8b84;
    --green: #4bb98c; --green-ink: #d6f2e6; --accent: #4bb98c;
    --red: #e2796c; --amber: #d6a04a; --blue: #6fb0e0; --ok: #4bb98c;
    --chip: #26313a; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #10161a; --surface: #171f24; --surface-2: #1e272d; --line: #2c363d;
  --ink: #e7ecea; --muted: #9fb0a9; --faint: #7c8b84;
  --green: #4bb98c; --green-ink: #d6f2e6; --accent: #4bb98c;
  --red: #e2796c; --amber: #d6a04a; --blue: #6fb0e0; --ok: #4bb98c;
  --chip: #26313a; color-scheme: dark;
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 14px/1.5 var(--sans); }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { margin: 0 0 .5em; line-height: 1.2; }
button { font: inherit; cursor: pointer; }
code, .mono { font-family: var(--mono); font-size: .92em; }
[hidden] { display: none !important; }
::placeholder { color: var(--faint); }

/* ---- layout ------------------------------------------------------------- */
.topbar {
  display: flex; align-items: center; gap: 18px; padding: 0 22px; height: 54px;
  background: var(--surface); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 5;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; color: var(--ink); }
.brand .mark { width: 26px; height: 26px; border-radius: 6px; background: var(--green);
  color: #fff; display: grid; place-items: center; font-family: Georgia, serif; font-weight: 700; }
.brand small { font-weight: 600; color: var(--faint); font-size: 11px; letter-spacing: .04em; }
.topbar .spacer { flex: 1; }
.topbar .crumbs { color: var(--muted); font-size: 13px; }
.topbar .crumbs a { color: var(--muted); }

.wrap { max-width: 1200px; margin: 0 auto; padding: 22px; }
.view { min-height: calc(100vh - 54px); }

.disclaimer {
  background: var(--chip); border: 1px solid var(--line); border-left: 3px solid var(--amber);
  border-radius: var(--radius); padding: 10px 14px; font-size: 12px; color: var(--muted); margin: 0 0 18px;
}

/* ---- buttons / inputs ------------------------------------------------- */
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 8px 14px; border-radius: 7px;
  border: 1px solid var(--line); background: var(--surface); color: var(--ink); font-weight: 600; }
.btn:hover { border-color: var(--accent); text-decoration: none; }
.btn.primary { background: var(--green); border-color: var(--green); color: #fff; }
.btn.primary:hover { filter: brightness(1.08); }
.btn.danger { color: var(--red); border-color: var(--red); background: transparent; }
.btn.sm { padding: 5px 10px; font-size: 12px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-row { display: flex; gap: 10px; flex-wrap: wrap; }

input, select, textarea {
  font: inherit; padding: 8px 10px; border: 1px solid var(--line); border-radius: 6px;
  background: var(--surface); color: var(--ink); width: 100%;
}
textarea { resize: vertical; min-height: 68px; font-family: var(--mono); font-size: 12px; }
label.field { display: block; margin: 10px 0; }
label.field > span { display: block; font-size: 11px; font-weight: 700; text-transform: uppercase;
  letter-spacing: .06em; color: var(--muted); margin-bottom: 4px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 14px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 0 14px; }
.check { display: flex; align-items: center; gap: 8px; margin: 10px 0; }
.check input { width: auto; }
.err { color: var(--red); font-size: 12px; min-height: 16px; margin: 6px 0 0; }
.hint { color: var(--muted); font-size: 12px; }

/* ---- cards / tables ------------------------------------------------- */
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; }
.card + .card { margin-top: 16px; }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; }
.stat { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; }
.stat b { display: block; font-size: 26px; font-weight: 800; }
.stat span { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: .05em; }

table { width: 100%; border-collapse: collapse; font-size: 13px; }
th { text-align: left; font-size: 11px; text-transform: uppercase; letter-spacing: .05em;
  color: var(--muted); padding: 9px 10px; border-bottom: 1px solid var(--line); }
td { padding: 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
tr:hover td { background: var(--surface-2); }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.rowlink { cursor: pointer; }

/* ---- chips / badges ------------------------------------------------- */
.chip { display: inline-block; padding: 2px 8px; border-radius: 99px; font-size: 11px; font-weight: 700;
  background: var(--chip); color: var(--muted); border: 1px solid var(--line); white-space: nowrap; }
.chip.green { color: var(--ok); border-color: color-mix(in srgb, var(--ok) 40%, transparent); }
.chip.red { color: var(--red); border-color: color-mix(in srgb, var(--red) 40%, transparent); }
.chip.amber { color: var(--amber); border-color: color-mix(in srgb, var(--amber) 40%, transparent); }
.chip.blue { color: var(--blue); border-color: color-mix(in srgb, var(--blue) 40%, transparent); }
.sev-critical, .sev-high { color: var(--red); font-weight: 800; }
.sev-medium { color: var(--amber); font-weight: 800; }
.sev-low, .sev-info { color: var(--muted); font-weight: 700; }

/* ---- tabs --------------------------------------------------------- */
.phead { display: flex; align-items: flex-start; gap: 16px; flex-wrap: wrap; margin-bottom: 4px; }
.phead h1 { font: 700 24px/1.15 Georgia, serif; }
.pmeta { color: var(--muted); font-size: 13px; margin-top: 2px; }
.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--line); margin: 16px 0 20px; overflow-x: auto; }
.tabs a { padding: 9px 14px; color: var(--muted); font-weight: 600; font-size: 13px; white-space: nowrap;
  border-bottom: 2px solid transparent; }
.tabs a.on { color: var(--ink); border-bottom-color: var(--accent); }
.tabs a:hover { text-decoration: none; color: var(--ink); }

/* ---- document control ------------------------------------------- */
.disc-group { margin-bottom: 18px; }
.disc-group > h3 { font-size: 13px; text-transform: uppercase; letter-spacing: .05em; color: var(--muted);
  border-bottom: 1px solid var(--line); padding-bottom: 6px; }
.doc-split { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.doc-split h4 { font-size: 12px; color: var(--faint); text-transform: uppercase; letter-spacing: .05em; }
.gov-dot { display: inline-block; width: 8px; height: 8px; border-radius: 99px; background: var(--ok); margin-right: 5px; }

/* ---- findings --------------------------------------------------- */
.filters { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }
.filters select { width: auto; min-width: 130px; }
.finding { border: 1px solid var(--line); border-left: 3px solid var(--faint); border-radius: var(--radius);
  background: var(--surface); margin-bottom: 10px; }
.finding.sl-critical, .finding.sl-high { border-left-color: var(--red); }
.finding.sl-medium { border-left-color: var(--amber); }
.finding > summary { padding: 12px 14px; cursor: pointer; display: flex; gap: 10px; align-items: baseline; list-style: none; }
.finding > summary::-webkit-details-marker { display: none; }
.finding > summary h4 { flex: 1; font-size: 14px; font-weight: 700; }
.finding .body { padding: 0 14px 14px; border-top: 1px solid var(--line); margin-top: 2px; }
.evidence { background: var(--surface-2); border-radius: 6px; padding: 10px 12px; font: 12px/1.5 var(--mono);
  margin: 8px 0; white-space: pre-wrap; }
.kv { display: grid; grid-template-columns: 150px 1fr; gap: 4px 10px; font-size: 12px; margin: 8px 0; }
.kv dt { color: var(--muted); }
.sheet-preview { max-width: 100%; max-height: 460px; border: 1px solid var(--line); background: #fff; margin-top: 8px; display: block; }

/* ---- modal ------------------------------------------------------ */
.modal-back { position: fixed; inset: 0; background: #0009; display: grid; place-items: center; padding: 20px; z-index: 20; }
.modal { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 22px;
  width: min(560px, 100%); max-height: 90vh; overflow: auto; }
.modal h2 { font: 700 20px Georgia, serif; }

/* ---- auth ------------------------------------------------------- */
.auth-back { position: fixed; inset: 0; background: var(--bg); display: grid; place-items: center; padding: 20px; }
.auth-card { width: min(400px, 100%); background: var(--surface); border: 1px solid var(--line);
  border-radius: 12px; padding: 30px; }
.auth-card h2 { font: 700 24px Georgia, serif; }

/* ---- misc ----------------------------------------------------- */
.empty { text-align: center; color: var(--muted); padding: 40px 20px; border: 1px dashed var(--line);
  border-radius: var(--radius); }
.planned { background: var(--chip); border: 1px dashed var(--line); border-radius: var(--radius);
  padding: 14px 16px; color: var(--muted); font-size: 13px; }
.toast { position: fixed; bottom: 18px; left: 50%; transform: translateX(-50%); background: var(--ink);
  color: var(--bg); padding: 10px 16px; border-radius: 8px; font-size: 13px; z-index: 40; }
.sectitle { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.sectitle h2, .sectitle h3 { font: 700 16px/1 var(--sans); }

@media (max-width: 820px) {
  .grid-2, .grid-3, .doc-split { grid-template-columns: 1fr; }
  .wrap { padding: 14px; }
}