:root{
  --gold:#F2C14E; --gold-2:#F7D573; --ink:#0e1726; --ink-2:#1b2436;
  --steel:#475569; --line:#e2e7f0; --line-2:#eef2f8; --muted:#6b7688; --text:#16202e;
  --bg:#eef2f8; --bg-2:#f7f9fc; --card:#ffffff;
  --accent:#2f6bff; --accent-2:#5b8bff; --accent-soft:#e9f0ff;
  --ok:#10b981; --err:#dc2626;
  --radius:16px;
  --shadow:0 1px 2px rgba(16,32,64,.04),0 12px 32px -14px rgba(16,32,64,.20);
  --shadow-sm:0 1px 2px rgba(16,32,64,.06);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Inter,Arial,sans-serif;
  color:var(--text);background:var(--bg-2);font-size:15px;line-height:1.5;-webkit-font-smoothing:antialiased;
  background-image:radial-gradient(120% 60% at 100% 0,#eaf0fb 0,transparent 60%),
    radial-gradient(100% 50% at 0 0,#eef1f8 0,transparent 55%);background-attachment:fixed}
a{color:var(--accent);text-decoration:none}
button{font-family:inherit;cursor:pointer}
input,select,textarea{font-family:inherit;font-size:15px}

/* ---------- LOGIN (Choob canon, dark/gold) ---------- */
.auth{min-height:100vh;display:grid;place-items:center;
  background:radial-gradient(120% 80% at 50% -10%,#1a1a26 0%,var(--ink-2) 45%,var(--ink) 100%);
  position:relative;overflow:hidden;padding:24px}
.auth::before,.auth::after{content:"";position:absolute;top:-30%;width:60%;height:140%;
  background:linear-gradient(180deg,rgba(242,193,78,.16),transparent 70%);filter:blur(14px);
  pointer-events:none}
.auth::before{left:8%;transform:rotate(14deg)}
.auth::after{right:8%;transform:rotate(-14deg)}
.auth-card{position:relative;z-index:2;width:100%;max-width:380px;
  background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.10);
  border-radius:20px;padding:34px 30px;backdrop-filter:blur(14px);
  box-shadow:0 30px 80px rgba(0,0,0,.55)}
.brand{font-weight:800;font-size:30px;letter-spacing:.04em;color:#F4F2EE;text-align:center;margin-bottom:4px}
.brand span{color:var(--gold)}
.brand-sub{text-align:center;color:#9CA3AF;font-size:13px;margin-bottom:26px}
.auth label{display:block;color:#cfd3dc;font-size:13px;margin:14px 0 6px}
.auth input{width:100%;padding:12px 14px;border-radius:11px;border:1px solid rgba(255,255,255,.12);
  background:rgba(255,255,255,.05);color:#fff;outline:none}
.auth input:focus{border-color:var(--gold);box-shadow:0 0 0 3px rgba(242,193,78,.18)}
.btn-gold{width:100%;margin-top:22px;padding:13px;border:0;border-radius:11px;font-weight:800;
  font-size:15px;color:#0a0a0f;background:linear-gradient(135deg,var(--gold),var(--gold-2));
  box-shadow:0 10px 26px rgba(242,193,78,.28);transition:transform .12s}
.btn-gold:hover{transform:translateY(-1px)}
.auth .err{margin-top:14px;color:#fca5a5;font-size:13px;text-align:center;min-height:18px}

/* ---------- APP SHELL ---------- */
.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:14px;
  background:linear-gradient(110deg,#0e1726,#1b2436 60%,#243049);color:#fff;
  padding:0 20px;height:60px;box-shadow:0 6px 24px -10px rgba(14,23,38,.5);
  border-bottom:1px solid rgba(255,255,255,.06)}
.topbar .logo{font-weight:800;letter-spacing:.06em;font-size:20px;display:flex;align-items:center;gap:9px}
.topbar .logo::before{content:"";width:11px;height:11px;border-radius:3px;
  background:linear-gradient(135deg,var(--gold),var(--gold-2));box-shadow:0 0 12px rgba(242,193,78,.6)}
.topbar .logo span{color:var(--gold)}
.topbar .sp{flex:1}
.topbar .who{font-size:13px;color:#aeb7c9}
.topbar a.tb,.topbar button.tb{color:#dce1ec;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  padding:8px 13px;border-radius:10px;font-size:13px;transition:.15s}
.topbar a.tb:hover,.topbar button.tb:hover{color:#fff;border-color:var(--gold);background:rgba(255,255,255,.10)}
.wrap{max-width:1060px;margin:0 auto;padding:28px 18px 70px}
.h1{font-size:25px;font-weight:800;margin:6px 0 2px;letter-spacing:-.01em}
.lead{color:var(--muted);margin:0 0 22px}

.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.grid{display:grid;gap:16px}
.products{grid-template-columns:repeat(auto-fill,minmax(270px,1fr))}
.prod{position:relative;display:block;padding:24px;text-decoration:none;color:var(--text);overflow:hidden;
  transition:transform .14s,box-shadow .14s,border-color .14s}
.prod::after{content:"";position:absolute;inset:0 0 auto 0;height:4px;
  background:linear-gradient(90deg,var(--accent),var(--accent-2));opacity:0;transition:.14s}
.prod:hover{transform:translateY(-4px);box-shadow:0 18px 40px -16px rgba(16,32,64,.30);border-color:var(--accent-2)}
.prod:hover::after{opacity:1}
.prod .ic{display:inline-flex;align-items:center;justify-content:center;width:54px;height:54px;font-size:28px;
  border-radius:14px;background:linear-gradient(135deg,var(--accent-soft),#fff);border:1px solid var(--line)}
.prod h3{margin:14px 0 5px;font-size:18px;letter-spacing:-.01em}
.prod p{margin:0;color:var(--muted);font-size:13px;line-height:1.55}

.toolbar{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:18px}
.btn{display:inline-flex;align-items:center;gap:7px;border:1px solid var(--line);background:#fff;
  color:var(--text);padding:10px 16px;border-radius:11px;font-weight:600;font-size:14px;
  box-shadow:var(--shadow-sm);transition:.15s}
.btn:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px)}
.btn-primary{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;border-color:transparent;
  box-shadow:0 10px 24px -8px rgba(47,107,255,.55)}
.btn-primary:hover{color:#fff;filter:brightness(1.06)}
.btn-accent{background:var(--accent);color:#fff;border-color:var(--accent)}
.btn-ghost{background:transparent;box-shadow:none}

table.list{width:100%;border-collapse:collapse;background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
table.list th,table.list td{text-align:left;padding:13px 16px;border-bottom:1px solid var(--line);font-size:14px}
table.list th{background:#f6f8fc;color:var(--muted);font-weight:700;font-size:11px;text-transform:uppercase;letter-spacing:.05em}
table.list tr:last-child td{border-bottom:0}
table.list tbody tr{transition:.12s}
table.list tr:hover td{background:var(--accent-soft)}
.badge{display:inline-block;padding:4px 11px;border-radius:20px;font-size:12px;font-weight:700}
.badge.framing{background:#eef2ff;color:#3538cd}
.badge.bostvig{background:#e6fbf7;color:#0f766e}
.empty{padding:54px;text-align:center;color:var(--muted)}

/* ---------- FORM ---------- */
.formgrid{display:grid;grid-template-columns:1fr 380px;gap:24px;align-items:start}
@media(max-width:900px){.formgrid{grid-template-columns:1fr}}
.field{margin-bottom:14px}
.field label{display:block;font-size:13px;font-weight:600;color:#3a4658;margin-bottom:6px}
.field .hint{font-weight:400;color:var(--muted);font-size:12px}
.field input,.field select,.field textarea{width:100%;padding:11px 13px;border:1px solid var(--line);
  border-radius:11px;background:#fcfdff;outline:none;transition:.15s;color:var(--text)}
.field input:hover,.field select:hover{border-color:#c6d0e0}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--accent);background:#fff;
  box-shadow:0 0 0 3px rgba(47,107,255,.14)}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:13px}
.row3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:13px}
@media(max-width:600px){.row2,.row3{grid-template-columns:1fr}}
fieldset{border:1px solid var(--line);border-radius:14px;padding:18px 18px 6px;margin:0 0 18px;
  background:linear-gradient(180deg,#fff,#fcfdff);box-shadow:var(--shadow-sm)}
fieldset legend{font-weight:800;font-size:13px;padding:2px 10px;color:var(--accent);text-transform:uppercase;
  letter-spacing:.04em;background:var(--accent-soft);border-radius:8px}
.check{display:flex;align-items:center;gap:10px;padding:9px 0;font-size:14px}
.check input{width:19px;height:19px;accent-color:var(--accent)}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:11px;overflow:hidden;background:#fff;flex-wrap:wrap}
.seg label{padding:10px 16px;font-size:14px;cursor:pointer;background:#fff;border-right:1px solid var(--line);transition:.12s}
.seg label:last-child{border-right:0}
.seg label:hover{background:var(--accent-soft)}
.seg input{display:none}
.seg label:has(input:checked){background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff}

.side{position:sticky;top:74px}
.side .card{padding:16px}
.side h4{margin:0 0 10px;font-size:14px}
.side img{width:100%;border-radius:10px;border:1px solid var(--line)}
.diagram{width:100%;height:auto}

/* ---------- ИНТЕРАКТИВНЫЙ ЧЕРТЁЖ ---------- */
.scheme-wrap{position:relative;border:1px solid #d7e0ee;border-radius:18px;padding:16px;margin-bottom:18px;
  background:#f7faff;
  background-image:linear-gradient(#e6edf9 1px,transparent 1px),linear-gradient(90deg,#e6edf9 1px,transparent 1px);
  background-size:22px 22px;box-shadow:var(--shadow-sm)}
.scheme-wrap .cap{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--steel);margin:2px 4px 10px;
  background:rgba(255,255,255,.7);padding:6px 10px;border-radius:9px;backdrop-filter:blur(2px);width:fit-content}
.scheme-wrap .cap b{color:var(--text)}
.scheme{position:relative;width:100%;max-width:540px;margin:0 auto}
.scheme svg{width:100%;height:auto;display:block;border-radius:10px}
.di{position:absolute;transform:translate(-50%,-50%);text-align:center;z-index:3}
.di .di-lab{display:block;font-size:10px;font-weight:700;color:#1d6fe0;letter-spacing:.02em;
  text-shadow:0 1px 2px #fff,0 0 4px #fff;margin-bottom:1px;white-space:nowrap}
.di input{width:62px;height:34px;text-align:center;font-size:15px;font-weight:700;color:#0f172a;
  border:1.5px solid #c7d2e8;border-radius:9px;background:rgba(255,255,255,.96);
  box-shadow:0 2px 6px rgba(20,40,80,.12);outline:none;padding:0 2px}
.di input::placeholder{color:#b6c0d4;font-weight:500}
.di input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(37,99,235,.22)}
.di.wide input{width:118px}
.di .di-val{display:inline-block;min-width:46px;padding:5px 8px;font-size:15px;font-weight:800;
  color:#0f172a;background:#fff;border:1.5px solid #c7d2e8;border-radius:8px}
.di .suf{font-size:10px;color:var(--muted);display:block}
.scheme-legend{display:flex;flex-wrap:wrap;gap:6px 14px;margin:10px 4px 0;font-size:12px;color:var(--muted)}
.scheme-legend span b{color:#1d6fe0}

@media(max-width:560px){
  .di input{width:54px;height:32px;font-size:14px}
  .di.wide input{width:96px}
  .di .di-lab{font-size:9px}
}

/* dimension table */
.dimtable{width:100%;border-collapse:collapse;font-size:13px}
.dimtable th,.dimtable td{border:1px solid var(--line);padding:4px}
.dimtable th{background:#fafbfd;font-weight:600;font-size:11px;color:var(--muted)}
.dimtable input{width:100%;border:0;padding:7px 6px;text-align:center;outline:none;background:transparent}
.dimtable input:focus{background:#eef4ff;border-radius:6px}
.dimtable td{position:relative}
.rowdel{border:0;background:transparent;color:var(--err);font-size:16px;padding:0 4px}

.note{background:#fff8e7;border:1px solid #f3e2b3;color:#7a5d12;padding:10px 14px;border-radius:10px;font-size:13px;margin:12px 0}
.formactions{display:flex;gap:12px;margin-top:8px}
.msg{padding:10px 14px;border-radius:10px;font-size:14px;margin-bottom:14px}
.msg.err{background:#fef2f2;color:var(--err);border:1px solid #fecaca}
.msg.ok{background:#ecfdf5;color:#047857;border:1px solid #a7f3d0}

/* ---------- VIEW / PRINT ---------- */
.kv{display:grid;grid-template-columns:230px 1fr;gap:0;margin-top:8px}
.kv dt{padding:10px 0;color:var(--muted);font-size:13px;border-bottom:1px solid var(--line-2)}
.kv dd{padding:10px 0;margin:0;font-weight:700;border-bottom:1px solid var(--line-2)}
@media(max-width:560px){.kv{grid-template-columns:1fr}.kv dt{border:0;padding-bottom:0}.kv dd{padding-top:2px}}
.sheet{background:#fff;max-width:820px;margin:0 auto;padding:36px;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}
.sheet h2{margin:0 0 2px;font-size:22px}
.sheet .org{color:var(--muted);font-size:13px;margin-bottom:18px}
.sheet table.dim{width:100%;border-collapse:collapse;margin:14px 0;font-size:13px}
.sheet table.dim th,.sheet table.dim td{border:1px solid #333;padding:6px 8px;text-align:center}
.sheet table.dim th{background:#f0f0f0}
.signline{margin-top:40px;display:flex;justify-content:space-between;color:var(--muted);font-size:13px}

@media print{
  body{background:#fff}
  .noprint{display:none !important}
  .sheet{border:0;box-shadow:none;max-width:100%;padding:0}
  .topbar,.toolbar{display:none}
  .wrap{padding:0}
}