:root {
  --bg: #f6f7fb; --surface: #ffffff; --text: #1b2333; --muted: #5b6576; --border: #dfe3ec;
  --primary: #1a4fd6; --primary-ink: #ffffff; --ok: #0f7a4a; --warn: #9a5b00; --bad: #b42318;
  --ok-bg: #e8f6ef; --warn-bg: #fff4e0; --bad-bg: #fdecea; --info-bg: #eaf0ff;
  --radius: 12px; --shadow: 0 1px 3px rgba(20,30,60,.08), 0 4px 16px rgba(20,30,60,.05);
}
@media (prefers-color-scheme: dark) {
  :root { --bg:#0f1420; --surface:#171e2d; --text:#e7ebf3; --muted:#a3adbf; --border:#2a3346; --primary:#7fa2ff; --primary-ink:#0b1220;
    --ok:#4cc38a; --warn:#f0b450; --bad:#ff7b6e; --ok-bg:#12291f; --warn-bg:#2e2412; --bad-bg:#331a18; --info-bg:#18223b; }
}
* { box-sizing: border-box; }
body { margin: 0; font-family: "Assistant", "Rubik", "Segoe UI", Arial, sans-serif; background: var(--bg); color: var(--text); line-height: 1.6; font-size: 17px; }
a { color: var(--primary); }
.skip-link { position: absolute; right: -999px; } .skip-link:focus { right: 8px; top: 8px; background: var(--surface); padding: 8px; z-index: 9; }
.testbar { background: #7a1f00; color: #fff; text-align: center; padding: 6px 12px; font-size: 14px; }
.topbar { display: flex; justify-content: space-between; align-items: center; padding: 12px 16px; background: var(--surface); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 5; }
.brand { font-weight: 800; font-size: 20px; text-decoration: none; color: var(--text); }
nav a, nav button { margin-inline-start: 12px; font-size: 15px; }
main { max-width: 1040px; margin: 0 auto; padding: 20px 16px 48px; }
.footer { max-width: 1040px; margin: 0 auto; padding: 16px; color: var(--muted); font-size: 13px; border-top: 1px solid var(--border); }
h1 { font-size: 30px; line-height: 1.25; margin: 8px 0 12px; } h2 { font-size: 22px; margin: 24px 0 10px; } h3 { font-size: 18px; margin: 16px 0 8px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow); margin-bottom: 16px; }
.grid { display: grid; gap: 16px; } .grid.cols-3 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); } .grid.cols-2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.btn { display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--primary); background: var(--primary); color: var(--primary-ink); padding: 10px 18px; border-radius: 10px; font-size: 16px; cursor: pointer; text-decoration: none; font-family: inherit; }
.btn.secondary { background: transparent; color: var(--primary); } .btn.small { padding: 5px 10px; font-size: 14px; } .btn.danger { background: var(--bad); border-color: var(--bad); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible { outline: 3px solid #ffbf47; outline-offset: 2px; }
input, textarea, select { width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 10px; font-size: 16px; background: var(--surface); color: var(--text); font-family: inherit; }
label { display: block; font-weight: 600; margin: 10px 0 4px; } .check { display: flex; gap: 8px; align-items: flex-start; font-weight: 400; } .check input { width: auto; margin-top: 6px; }
.muted { color: var(--muted); } .small { font-size: 14px; }
.badge { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: 13px; font-weight: 700; }
.badge.ok { background: var(--ok-bg); color: var(--ok); } .badge.warn { background: var(--warn-bg); color: var(--warn); } .badge.bad { background: var(--bad-bg); color: var(--bad); } .badge.info { background: var(--info-bg); color: var(--primary); }
.alert { border-radius: 10px; padding: 10px 14px; margin: 8px 0; } .alert.warn { background: var(--warn-bg); } .alert.bad { background: var(--bad-bg); } .alert.ok { background: var(--ok-bg); } .alert.info { background: var(--info-bg); }
.chat { display: flex; flex-direction: column; gap: 10px; max-height: 60vh; overflow-y: auto; padding: 6px; }
.msg { max-width: 85%; padding: 10px 14px; border-radius: 14px; white-space: pre-wrap; }
.msg.user { align-self: flex-start; background: var(--primary); color: var(--primary-ink); border-bottom-right-radius: 4px; }
.msg.assistant { align-self: flex-end; background: var(--info-bg); border-bottom-left-radius: 4px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 8px 0; }
.composer { display: flex; gap: 8px; margin-top: 10px; } .composer textarea { min-height: 48px; }
.layout { display: grid; grid-template-columns: 2fr 1fr; gap: 16px; } @media (max-width: 820px) { .layout { grid-template-columns: 1fr; } .msg { max-width: 95%; } h1 { font-size: 24px; } }
table { width: 100%; border-collapse: collapse; font-size: 15px; } th, td { padding: 8px; border-bottom: 1px solid var(--border); text-align: right; vertical-align: top; }
.table-wrap { overflow-x: auto; }
.price { font-size: 28px; font-weight: 800; } .price small { font-size: 14px; font-weight: 400; color: var(--muted); }
.product { border: 2px solid var(--border); border-radius: var(--radius); padding: 14px; cursor: pointer; } .product.selected { border-color: var(--primary); background: var(--info-bg); }
.steps { counter-reset: s; list-style: none; padding: 0; } .steps li { counter-increment: s; padding: 8px 0 8px 0; display: flex; gap: 10px; }
.steps li::before { content: counter(s); background: var(--primary); color: var(--primary-ink); border-radius: 50%; min-width: 28px; height: 28px; display: inline-flex; align-items: center; justify-content: center; font-weight: 700; }
.steps li.done::before { content: "✓"; background: var(--ok); }
.tabs { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 12px; } .tabs button { background: var(--surface); border: 1px solid var(--border); padding: 6px 12px; border-radius: 8px; cursor: pointer; color: var(--text); font-family: inherit; }
.tabs button.active { background: var(--primary); color: var(--primary-ink); border-color: var(--primary); }
.kpi { font-size: 26px; font-weight: 800; } pre { white-space: pre-wrap; font-size: 12px; background: var(--bg); padding: 8px; border-radius: 8px; max-height: 300px; overflow: auto; }
.toast { position: fixed; bottom: 16px; left: 16px; right: 16px; max-width: 520px; margin: 0 auto; background: #1b2333; color: #fff; padding: 12px 16px; border-radius: 10px; z-index: 20; }

.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; }
@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; transition: none !important; animation: none !important; } }
a:focus-visible, button:focus-visible, [tabindex]:focus-visible { outline: 3px solid #ffbf47; outline-offset: 2px; }
.steps li.done::before { color: var(--surface); }