:root{
  --yellow:#FFCD1B; --yellow-d:#E6B400; --yellow-soft:#FFF8E1;
  --ink:#1A1A1A; --muted:#6B7280;
  --bg:#F5F6F8; --card:#FFFFFF; --border:#E6E8EC;
  --radius:14px;
  --shadow:0 1px 3px rgba(16,24,40,.06), 0 1px 2px rgba(16,24,40,.04);
  --shadow-h:0 6px 18px rgba(16,24,40,.10);
}
*{box-sizing:border-box;margin:0;padding:0}
body{
  font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  background:var(--bg);color:var(--ink);line-height:1.5;
  -webkit-font-smoothing:antialiased;
}

/* Шапка */
.hdr{background:#fff;border-bottom:1px solid var(--border);padding:14px 24px;position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;gap:16px}
.spec-link{display:flex;align-items:center;gap:7px;text-decoration:none;color:var(--ink);font-size:14px;font-weight:500}
.spec-link:hover{color:var(--yellow-d)}
.spec-link .ti{font-size:19px}
.spec-badge{background:var(--yellow);color:#1A1A1A;font-size:12px;font-weight:700;min-width:19px;height:19px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;padding:0 5px}
.spec-badge[hidden]{display:none}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink)}
.logo{height:32px;width:auto;flex:0 0 auto;display:block}
.brand-name{font-size:20px;font-weight:700;letter-spacing:-.02em}
.brand-badge{font-size:12px;font-weight:600;color:var(--muted);background:var(--bg);padding:3px 9px;border-radius:20px}

/* Контейнер */
.wrap{max-width:960px;margin:0 auto;padding:32px 24px}
.h1{font-size:28px;font-weight:700;letter-spacing:-.02em}
.sub{color:var(--muted);margin-top:6px;margin-bottom:28px}

/* Сетка калькуляторов */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:16px}
.card{
  position:relative;display:flex;gap:14px;align-items:center;
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:18px;text-decoration:none;color:var(--ink);box-shadow:var(--shadow);
  transition:transform .12s ease, box-shadow .12s ease, border-color .12s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-h);border-color:var(--yellow)}
.card--soon{opacity:.6;pointer-events:none}
.card-ico{font-size:28px;flex:0 0 auto;line-height:1;color:var(--ink)}
.card--soon .card-ico{color:var(--muted)}
.h1 .ti{color:var(--muted);font-size:.85em;vertical-align:-1px}
.card-title{font-weight:600}
.card-desc{font-size:13px;color:var(--muted);margin-top:2px}
.badge-soon{position:absolute;top:10px;right:10px;font-size:11px;color:var(--muted);background:var(--bg);padding:2px 8px;border-radius:10px}

/* Назад */
.back{display:inline-block;color:var(--muted);text-decoration:none;font-size:14px;margin-bottom:14px}
.back:hover{color:var(--ink)}

/* Калькулятор: две колонки */
.cols{display:grid;grid-template-columns:1fr 320px;gap:20px;align-items:start}
.panel{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}

/* Пресеты */
.presets{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}
.chip{font:inherit;font-size:13px;background:var(--bg);border:1px solid var(--border);border-radius:20px;padding:6px 12px;cursor:pointer;color:var(--ink);transition:.12s}
.chip:hover{border-color:var(--yellow);background:var(--yellow-soft)}

/* Форма */
.form{display:flex;flex-direction:column;gap:14px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field{display:flex;flex-direction:column;gap:6px}
.field label{font-size:13px;color:var(--muted)}
.field input,.field select{font:inherit;font-size:15px;padding:10px 12px;border:1px solid var(--border);border-radius:10px;background:#fff;color:var(--ink)}
.field input:focus,.field select:focus{outline:none;border-color:var(--yellow);box-shadow:0 0 0 3px rgba(255,205,27,.25)}
.btn{font:inherit;font-weight:600;background:var(--yellow);color:#1A1A1A;border:none;border-radius:10px;padding:12px 18px;cursor:pointer;transition:background .12s;margin-top:4px}
.btn:hover{background:var(--yellow-d)}

/* Результат */
.result[hidden]{display:none}
.result .res-row{display:flex;justify-content:space-between;align-items:baseline;gap:12px;padding:13px 0;border-bottom:1px solid var(--border)}
.result .res-row:last-child{border-bottom:none}
.res-row span{color:var(--muted);font-size:14px}
.res-row b{font-size:18px;font-weight:700;white-space:nowrap}
.res-row--big b{font-size:30px;color:var(--ink)}
.res-row--big span{font-size:15px}

/* Подсказка / ошибка */
.hint{color:var(--muted);font-size:13px;margin-top:4px;line-height:1.4}
.hint[hidden]{display:none}

/* Вкладки (сортность) */
.tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}
.tab{font:inherit;font-size:14px;background:#fff;border:1px solid var(--border);border-radius:10px;padding:8px 14px;cursor:pointer;color:var(--ink);transition:.12s}
.tab:hover{border-color:var(--yellow)}
.tab--active{background:var(--yellow);border-color:var(--yellow);font-weight:600}
.grade-text{white-space:pre-wrap;font-size:14px;line-height:1.65;color:var(--ink)}
.grade-text b{font-weight:600}
.grade-hidden{display:none}

/* Кнопка «В спецификацию» */
.spec-add{font:inherit;font-size:14px;font-weight:600;background:var(--yellow);color:#1A1A1A;border:none;border-radius:10px;padding:11px 16px;cursor:pointer;width:100%;margin-top:16px;transition:background .12s}
.spec-add:hover{background:var(--yellow-d)}
.spec-add--inline{width:auto;margin-top:0}
.batch-panel{margin-top:20px}

/* Страница спецификации */
.spec-row{display:grid;grid-template-columns:1fr auto auto auto;gap:14px;align-items:center;padding:13px 0;border-bottom:1px solid var(--border)}
.spec-row:last-of-type{border-bottom:none}
.spec-name{font-weight:500}
.spec-qty,.spec-vol{color:var(--muted);font-size:14px;white-space:nowrap}
.spec-vol{font-weight:600;color:var(--ink)}
.spec-del{background:none;border:none;color:var(--muted);cursor:pointer;font-size:15px;line-height:1;padding:6px 8px;border-radius:6px}
.spec-del:hover{background:#FCEBEB;color:#A32D2D}
.spec-totals{display:flex;gap:28px;flex-wrap:wrap;margin-top:18px;padding-top:18px;border-top:2px solid var(--border)}
.spec-totals div{display:flex;flex-direction:column;gap:3px}
.spec-totals span{font-size:13px;color:var(--muted)}
.spec-totals b{font-size:22px;font-weight:700}
.spec-actions{margin-top:20px;display:flex;gap:10px}
.btn-ghost{font:inherit;font-size:14px;background:#fff;border:1px solid var(--border);border-radius:10px;padding:10px 16px;cursor:pointer;color:var(--ink)}
.btn-ghost:hover{border-color:var(--muted)}

/* Футер */
.ftr{text-align:center;color:var(--muted);font-size:13px;padding:36px 24px}

@media (max-width:720px){
  .cols{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .wrap{padding:24px 16px}
  .h1{font-size:24px}
}

/* ---- Спецификация: редактор-таблица ---- */
.spec-header-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px}
.spec-smart{display:flex;gap:10px}
.spec-smart input{flex:1;font:inherit;font-size:15px;padding:10px 12px;border:1px solid var(--border);border-radius:10px}
.spec-smart input:focus{outline:none;border-color:var(--yellow);box-shadow:0 0 0 3px rgba(255,205,27,.25)}
.spec-toolbar{display:flex;gap:10px;margin-top:12px;align-items:center;flex-wrap:wrap}
.preset-select{font:inherit;font-size:14px;padding:9px 12px;border:1px solid var(--border);border-radius:10px;background:#fff;color:var(--ink)}
.table-scroll{overflow-x:auto}
.spec-table{width:100%;border-collapse:collapse;font-size:14px}
.spec-table th{font-size:12px;color:var(--muted);font-weight:600;text-align:left;padding:8px 6px;border-bottom:1px solid var(--border);white-space:nowrap}
.spec-table td{padding:6px;border-bottom:1px solid var(--border);vertical-align:top}
.spec-table .num{text-align:right;white-space:nowrap}
.spec-table td.num{padding-top:14px;font-weight:600}
.spec-table--view td{padding:10px 8px;vertical-align:middle}
.spec-table--view td.num{padding-top:10px;font-weight:500}
.spec-table tfoot td{border-bottom:none;border-top:2px solid var(--ink);padding-top:10px}
.cell{font:inherit;font-size:14px;padding:7px 8px;border:1px solid var(--border);border-radius:8px;background:#fff;width:100%;box-sizing:border-box}
.cell:focus{outline:none;border-color:var(--yellow);box-shadow:0 0 0 2px rgba(255,205,27,.25)}
.num-in{max-width:76px}
.size-wrap{display:flex;gap:3px;align-items:center}
.size-wrap .num-in{max-width:58px;padding:7px 5px;text-align:center}
.qty-wrap{display:flex;gap:4px;align-items:center}
.qty-wrap .unit{max-width:88px}
.unit-fixed{color:var(--muted);font-size:13px;padding:0 4px}
.row-hint{font-size:11px;color:#B26B00;margin-top:3px;line-height:1.3;max-width:180px}
.row-btns{white-space:nowrap;padding-top:12px}
.rb{font:inherit;font-size:13px;background:#fff;border:1px solid var(--border);border-radius:8px;padding:6px 9px;cursor:pointer;color:var(--muted)}
.rb:hover{border-color:var(--muted);color:var(--ink)}
.spec-totals{display:block;margin-top:16px;border-top:1px solid var(--border);padding-top:6px}
.spec-totals .res-row{display:flex;justify-content:space-between;align-items:baseline;gap:12px;padding:10px 0;border-bottom:1px solid var(--border)}
.spec-totals .res-row b{font-size:17px}
.spec-totals .res-row--big b{font-size:24px}
.spec-actions{display:flex;gap:10px;margin-top:16px;flex-wrap:wrap}
.opt{font-weight:400;color:var(--muted);font-size:11px}
#pl-chain,#pl-extra,#pl-cut{white-space:normal;text-align:right;line-height:1.35}