*{box-sizing:border-box;margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;
  background:#f1f5f9;
  color:#1e293b;
  padding:20px;
  padding-top:66px;
}
.wrap{max-width:1080px;margin:0 auto}

h1{font-size:22px;margin-bottom:4px}
.sub{color:#64748b;font-size:13px;margin-bottom:18px}
.description{
  font-size:14px;
  color:#475569;
  line-height:1.6;
  margin-bottom:20px;
  padding:14px 18px;
  background:#f8fafc;
  border-left:3px solid #2563eb;
  border-radius:0 8px 8px 0;
}

.card{
  background:#fff;
  border:1px solid #e2e8f0;
  border-radius:12px;
  padding:20px;
  margin-bottom:16px;
}
.card h2{
  font-size:15px;
  margin-bottom:14px;
  color:#1e293b;
  border-bottom:1px solid #f1f5f9;
  padding-bottom:8px;
}

.grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(230px,1fr));
  gap:12px;
}

.field label{
  display:block;
  font-size:12px;
  color:#64748b;
  margin-bottom:4px;
  font-weight:500;
}
.field input,
.field select{
  width:100%;
  padding:8px 10px;
  border:1px solid #cbd5e1;
  border-radius:8px;
  font-size:14px;
  background:#fff;
  transition:border-color .15s;
}
.field input:focus,
.field select:focus{
  outline:none;
  border-color:#3b82f6;
  box-shadow:0 0 0 3px #eff6ff;
}

.calc-btn{
  background:#2563eb;
  color:#fff;
  border:none;
  border-radius:8px;
  padding:10px 22px;
  font-size:14px;
  cursor:pointer;
  margin-top:14px;
  font-weight:600;
  transition:background .15s;
}
.calc-btn:hover{background:#1d4ed8}
.calc-btn.btn-neutral{background:#e5e7eb;color:#374151}
.calc-btn.btn-neutral:hover{background:#d1d5db}

/* 3-column grid variant for the pressure unit converter */
.grid.grid-3col{
  grid-template-columns:repeat(auto-fill,minmax(210px,1fr));
}

.err{
  color:#dc2626;
  font-size:13px;
  margin-top:10px;
  padding:8px 12px;
  background:#fef2f2;
  border-radius:6px;
  display:none;
}

/* results table */
.res-table{width:100%;border-collapse:collapse;font-size:14px}
.res-table th{
  background:#f8fafc;
  padding:9px 10px;
  text-align:left;
  font-weight:600;
  font-size:13px;
  border-bottom:2px solid #e2e8f0;
}
.res-table td{padding:9px 10px;border-bottom:1px solid #f1f5f9}
.res-table tr:last-child td{border-bottom:none}
.res-table .sep td{
  background:#f8fafc;
  font-weight:600;
  font-size:12px;
  color:#475569;
  padding:5px 10px;
  text-transform:uppercase;
  letter-spacing:.04em;
}
.val{font-variant-numeric:tabular-nums;font-weight:600;color:#0f172a}
.hint{font-size:11px;color:#94a3b8}
.hint-inline{font-size:11px;color:#94a3b8;font-weight:400}
.res-table .sep-gvf td{
  background:#eff6ff;
  font-weight:600;
  font-size:12px;
  color:#1d4ed8;
  padding:5px 10px;
  text-transform:uppercase;
  letter-spacing:.04em;
}
.res-table .gvf-regime-toggle{cursor:pointer;user-select:none}
.res-table .gvf-regime-toggle:hover td{background:#dbeafe}
.res-table .gvf-regime-header{
  background:#eff6ff;
  font-weight:600;
  font-size:13px;
  color:#1d4ed8;
  padding:8px 10px;
}
.res-table .gvf-regime-desc td{
  font-size:13px;
  color:#475569;
  line-height:1.55;
  font-style:italic;
  background:#f8fafc;
  padding:8px 12px 12px;
}

/* ── Contacts form ─────────────────────────────────────────────── */
.field textarea{
  width:100%;
  padding:10px 12px;
  border:1px solid #e2e8f0;
  border-radius:8px;
  font-size:14px;
  font-family:inherit;
  line-height:1.5;
  resize:vertical;
  min-height:120px;
  box-sizing:border-box;
}
.field textarea:focus{
  outline:none;
  border-color:#2563eb;
  box-shadow:0 0 0 3px rgba(37,99,235,.12);
}
.contact-ok{
  margin-top:12px;
  padding:10px 14px;
  background:#f0fdf4;
  border:1px solid #bbf7d0;
  border-radius:8px;
  color:#166534;
  font-size:14px;
}

/* ─── Guest banner (Tab 3 login prompt) ───────────────────────────────────── */
.guest-banner{
  display:flex;align-items:center;gap:12px;flex-wrap:wrap;
  background:#fffbeb;
  border:1px solid #fde68a;
  border-left:4px solid #f59e0b;
  border-radius:0 10px 10px 0;
  padding:14px 18px;
  margin-bottom:16px;
  font-size:14px;
  color:#78350f;
  line-height:1.5;
}
.guest-banner-icon{font-size:20px;flex-shrink:0}
.guest-banner span:nth-child(2){flex:1}
.guest-banner-btn{
  background:#2563eb;color:#fff;border:none;
  border-radius:8px;padding:7px 16px;font-size:13px;
  font-weight:600;cursor:pointer;white-space:nowrap;
  transition:background .15s;flex-shrink:0;
}
.guest-banner-btn:hover{background:#1d4ed8}

.guest-inline-notice{
  display:inline-block;
  margin-left:10px;
  font-size:13px;
  color:#92400e;
  vertical-align:middle;
}
.guest-notice-link{color:#2563eb;font-weight:600;text-decoration:none}
.guest-notice-link:hover{text-decoration:underline}

.calc-btn:disabled{background:#93c5fd;cursor:not-allowed}

/* ─── Professional status badge ────────────────────────────────────────────── */
.status-professional{background:#ede9fe;color:#4c1d95}
.badge-pro{background:#ede9fe;color:#4c1d95}

/* ─── Pro flow map toggle checkboxes ────────────────────────────────────────── */
.pro-toggles-wrap{
  display:flex;flex-wrap:wrap;gap:6px;
  padding:14px 0 4px;
  border-top:1px solid #f1f5f9;
  margin-top:14px;
}
.pro-toggle-label{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:20px;
  border:2px solid var(--c,#64748b);
  background:#fff;
  cursor:pointer;font-size:12px;font-weight:600;
  color:#1e293b;transition:background .12s;
  user-select:none;
}
.pro-toggle-label:hover{background:#f8fafc}
.pro-toggle-label input[type=checkbox]{display:none}
.pro-toggle-swatch{
  width:12px;height:12px;border-radius:3px;
  background:var(--c,#64748b);flex-shrink:0;
  transition:opacity .15s;
}
/* Dim when unchecked */
.pro-toggle-label:has(input:not(:checked)){
  opacity:.45;
}
/* Vertical divider between GVF/input-rect toggles and pipe toggles */
.pro-toggle-divider{
  display:inline-block;width:1px;background:#e2e8f0;
  align-self:stretch;margin:2px 4px;
}

/* ─── Summation mode toggle switch ──────────────────────────────────────── */
.sum-mode-bar{
  display:flex;align-items:center;gap:10px;
  padding:4px 0 16px;
}
.sum-switch{
  position:relative;width:44px;height:24px;flex-shrink:0;cursor:pointer;
}
.sum-switch input{opacity:0;width:0;height:0;position:absolute;}
.sum-slider{
  position:absolute;inset:0;background:#d1d5db;
  border-radius:24px;transition:background .2s;cursor:pointer;
}
.sum-slider:before{
  content:'';position:absolute;height:18px;width:18px;
  left:3px;top:3px;background:#fff;border-radius:50%;
  transition:transform .2s;box-shadow:0 1px 3px rgba(0,0,0,.25);
}
.sum-switch input:checked + .sum-slider{background:#7c3aed;}
.sum-switch input:checked + .sum-slider:before{transform:translateX(20px);}
.sum-mode-label{font-size:13px;font-weight:600;color:#374151;}
.sum-info-text{font-size:12px;color:#6b7280;margin-left:2px;}

/* ─── Page-level tabs (main nav) ──────────────────────────────────────────── */
.page-tabs{
  display:flex;gap:4px;
  margin-bottom:20px;
  border-bottom:2px solid #e2e8f0;
  padding-bottom:0;
  flex-wrap:wrap;
}
.page-tab-btn{
  background:none;border:2px solid transparent;border-bottom:none;
  padding:9px 20px;border-radius:8px 8px 0 0;
  font-size:14px;font-weight:600;cursor:pointer;
  color:#64748b;position:relative;top:2px;transition:all .15s;
}
.page-tab-btn.active{
  color:#2563eb;
  border-color:#e2e8f0;
  border-bottom-color:#fff;
  background:#fff;
}
.page-tab-btn:hover:not(.active){background:#f8fafc;color:#1e293b}

/* ═══════════════════════════════════════════════════════════════
   AUTH BAR & MODAL
   ═══════════════════════════════════════════════════════════════ */
.auth-bar{
  position:fixed;top:0;right:0;left:0;z-index:900;
  background:rgba(255,255,255,.95);
  backdrop-filter:blur(6px);
  border-bottom:1px solid #e2e8f0;
  display:flex;justify-content:flex-end;align-items:center;
  padding:8px 24px;
  height:46px;
}
.auth-bar-user{display:flex;align-items:center;gap:12px;font-size:13px}
.auth-bar-email{font-weight:600;color:#1e293b;max-width:200px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.auth-bar-company{color:#64748b;font-size:12px}
.auth-bar-link{color:#2563eb;text-decoration:none;font-weight:600;font-size:13px}
.auth-bar-link:hover{text-decoration:underline}
.auth-bar-btn{
  background:#2563eb;
  color:#fff;
  border:none;
  border-radius:8px;
  padding:7px 16px;
  font-size:13px;
  font-weight:600;
  cursor:pointer;
  transition:background .15s;
}
.auth-bar-btn:hover{background:#1d4ed8}
/* logout button in bar keeps neutral style */
.auth-bar-btn.auth-logout-trigger{
  background:none;
  border:1px solid #cbd5e1;
  color:#475569;
}
.auth-bar-btn.auth-logout-trigger:hover{background:#f1f5f9;color:#1e293b}


/* Overlay */
.auth-overlay{
  position:fixed;inset:0;z-index:1000;
  background:rgba(15,23,42,.45);
  display:flex;align-items:center;justify-content:center;
  padding:16px;
}
.auth-modal{
  background:#fff;border-radius:14px;
  box-shadow:0 20px 60px rgba(0,0,0,.2);
  padding:28px;width:100%;max-width:420px;
  position:relative;
}
.auth-close{
  position:absolute;top:14px;right:16px;
  background:none;border:none;font-size:22px;line-height:1;
  color:#94a3b8;cursor:pointer;
}
.auth-close:hover{color:#1e293b}

/* Tabs */
.auth-tabs{display:flex;gap:4px;margin-bottom:20px;border-bottom:2px solid #e2e8f0;padding-bottom:0}
.auth-tab{
  background:none;border:2px solid transparent;border-bottom:none;
  padding:8px 18px;border-radius:8px 8px 0 0;font-size:14px;font-weight:600;
  cursor:pointer;color:#64748b;position:relative;top:2px;transition:all .15s;
}
.auth-tab.active{color:#2563eb;border-color:#e2e8f0;border-bottom-color:#fff;background:#fff}
.auth-tab:hover:not(.active){background:#f8fafc;color:#1e293b}

/* Step titles */
.auth-step-title{font-size:17px;font-weight:700;margin-bottom:8px;color:#1e293b}
.auth-step-desc{font-size:13px;color:#64748b;margin-bottom:16px;line-height:1.5}

/* Submit button */
.auth-submit-btn{
  width:100%;background:#2563eb;color:#fff;border:none;
  border-radius:8px;padding:11px;font-size:15px;font-weight:600;
  cursor:pointer;margin-top:14px;transition:background .15s;
}
.auth-submit-btn:hover{background:#1d4ed8}
.auth-submit-btn:disabled{background:#93c5fd;cursor:not-allowed}

/* Error message */
.auth-err{
  margin-top:10px;padding:9px 12px;background:#fef2f2;
  border-radius:8px;color:#dc2626;font-size:13px;display:none;
}

/* Forgot / back links row */
.auth-link-row{margin-top:12px;font-size:12px;text-align:center}
.auth-link-row a{color:#64748b;text-decoration:none}
.auth-link-row a:hover{color:#2563eb;text-decoration:underline}

/* Panel (login / register) */
.auth-panel .field{margin-bottom:12px}
.auth-panel .field label{font-size:12px;color:#64748b;display:block;margin-bottom:4px;font-weight:500}
.auth-panel .field input{
  width:100%;padding:9px 11px;border:1px solid #cbd5e1;
  border-radius:8px;font-size:14px;
}
.auth-panel .field input:focus{outline:none;border-color:#3b82f6;box-shadow:0 0 0 3px #eff6ff}

/* ── Карта расходов ──────────────────────────────────────────── */
#flowMapCard canvas{
  display:block;
  width:100% !important;
  max-height:520px;
}

/* ── Тестовый раздел ─────────────────────────────────────────── */
.test-card{
  border-color:#fbbf24;
  border-left:4px solid #f59e0b;
}
.test-card h2{
  color:#92400e;
}
.inv-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:20px;
}
@media(max-width:600px){
  .inv-grid{grid-template-columns:1fr}
}
.inv-block{
  background:#fffbeb;
  border:1px solid #fde68a;
  border-radius:10px;
  padding:16px;
}
.inv-title{
  font-size:14px;
  font-weight:700;
  color:#92400e;
  margin-bottom:8px;
}
.inv-desc{
  font-size:13px;
  color:#78716c;
  margin-bottom:12px;
  line-height:1.5;
}
.inv-btn{
  background:#d97706;
  color:#fff;
  border:none;
  border-radius:8px;
  padding:9px 18px;
  font-size:14px;
  cursor:pointer;
  font-weight:600;
  margin-top:10px;
  transition:background .15s;
}
.inv-btn:hover{background:#b45309}
.inv-result{
  margin-top:14px;
  min-height:40px;
  font-size:14px;
  line-height:1.6;
}

/* ── Section heading inside card forms ─────────────────────────── */
.section-title{
  font-size:13px;
  font-weight:700;
  color:#475569;
  text-transform:uppercase;
  letter-spacing:.05em;
  margin:0 0 10px;
  padding-bottom:6px;
  border-bottom:1px solid #e2e8f0;
}

/* ── 3-column grid (standalone, not .grid wrapper) ─────────────── */
.grid-3col{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(230px,1fr));
  gap:0 24px;
}

/* ── Advanced/optional parameters toggle ───────────────────────── */
.advanced-toggle{
  border:1px solid #e2e8f0;
  border-radius:8px;
  padding:10px 14px;
  background:#f8fafc;
}
.advanced-toggle summary{
  cursor:pointer;
  font-size:13px;
  font-weight:600;
  color:#475569;
  list-style:none;
  user-select:none;
}
.advanced-toggle summary::-webkit-details-marker{display:none}
.advanced-toggle summary::before{
  content:'▶ ';
  font-size:11px;
}
.advanced-toggle[open] summary::before{content:'▼ '}

/* ── Flow calculator result table ──────────────────────────────── */
.result-table{
  width:100%;
  border-collapse:collapse;
  font-size:14px;
  margin-top:6px;
}
.result-table th{
  background:#f1f5f9;
  padding:9px 12px;
  text-align:left;
  font-weight:600;
  font-size:13px;
  border-bottom:2px solid #e2e8f0;
}
.result-table td{
  padding:7px 12px;
  border-bottom:1px solid #f1f5f9;
  vertical-align:middle;
}
.result-table tr:last-child td{border-bottom:none}
.result-table .result-val{
  font-weight:700;
  color:#1e40af;
  font-variant-numeric:tabular-nums;
}
.result-table .result-note{
  color:#64748b;
  font-size:12px;
  font-style:italic;
}
.result-table .result-sep td{
  background:#e0f2fe;
  color:#0369a1;
  font-weight:700;
  font-size:12px;
  padding:5px 12px;
  letter-spacing:.04em;
  text-transform:uppercase;
}

/* ── Calc button row with error box ────────────────────────────── */
.calc-btn-row{
  display:flex;
  align-items:flex-start;
  flex-wrap:wrap;
  gap:12px;
}
.calc-err-box{
  flex:1;
  min-width:200px;
  background:#fef2f2;
  border:1px solid #fecaca;
  border-radius:8px;
  padding:8px 14px;
  font-size:13px;
  color:#dc2626;
}
.calc-err-box ul{margin:0;padding-left:18px}
.calc-err-box li{margin:3px 0}