:root {
  --gri-blue: #007db9;
  --gri-blue-2: #00a6d1;
  --gri-orange: #f58220;
  --gri-text: #1d2029;
  --gri-muted: #6b7280;
  --gri-line: #e5e7eb;
  --gri-bg: #f5f6f8;
  --gri-card: #ffffff;
  --gri-soft: #f8fafc;
  --gri-shadow: 0 12px 34px rgba(29, 32, 41, 0.08);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background: var(--gri-bg);
  color: var(--gri-text);
  font-family: "Open Sans", Arial, sans-serif;
  letter-spacing: 0;
}

button,
input,
select {
  font: inherit;
  letter-spacing: 0;
}

button {
  cursor: pointer;
}

.gri-calc {
  max-width: 1440px;
  margin: 0 auto;
  padding: 24px;
}

.calc-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 20px;
  padding: 18px 20px;
  background: var(--gri-card);
  border: 1px solid var(--gri-line);
  border-radius: var(--radius);
}

.brand {
  display: flex;
  align-items: center;
  gap: 16px;
  min-width: 0;
}

.brand-logo {
  width: 132px;
  height: 38px;
  object-fit: contain;
  flex: 0 0 auto;
}

.brand h1 {
  margin: 0 0 4px;
  font-size: 28px;
  line-height: 1.15;
  font-weight: 700;
}

.brand p {
  margin: 0;
  color: var(--gri-muted);
  font-size: 14px;
  line-height: 1.4;
}

.header-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
  color: var(--gri-muted);
  font-size: 13px;
}

.header-meta span {
  display: inline-flex;
  min-height: 34px;
  align-items: center;
  padding: 6px 11px;
  border: 1px solid var(--gri-line);
  border-radius: 18px;
  background: var(--gri-soft);
  white-space: nowrap;
}

.calc-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 390px;
  gap: 20px;
  align-items: start;
  min-width: 0;
}

.catalog-panel,
.estimate-card {
  background: var(--gri-card);
  border: 1px solid var(--gri-line);
  border-radius: var(--radius);
  box-shadow: var(--gri-shadow);
}

.catalog-panel {
  padding: 18px;
  min-width: 0;
}

.toolbar {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) minmax(170px, 240px) minmax(150px, 200px) minmax(180px, 240px);
  gap: 12px;
  align-items: end;
}

.search-field,
.select-field {
  display: grid;
  gap: 6px;
}

.search-field span,
.select-field span,
.totals span {
  color: var(--gri-muted);
  font-size: 12px;
  line-height: 1.2;
}

.search-field input,
.select-field select {
  width: 100%;
  height: 46px;
  border: 1px solid #d7dbe3;
  border-radius: 4px;
  background: #fff;
  color: var(--gri-text);
  padding: 0 14px;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.search-field input:focus,
.select-field select:focus {
  border-color: var(--gri-blue);
  box-shadow: 0 0 0 3px rgba(0, 125, 185, 0.12);
}

.quick-row {
  display: flex;
  gap: 8px;
  margin-top: 14px;
  overflow-x: auto;
  padding-bottom: 2px;
  min-width: 0;
}

.quick-chip {
  min-height: 34px;
  padding: 7px 12px;
  border: 1px solid var(--gri-line);
  border-radius: 18px;
  background: #fff;
  color: var(--gri-text);
  white-space: nowrap;
}

.quick-chip.active {
  color: #fff;
  border-color: var(--gri-blue);
  background: linear-gradient(180deg, var(--gri-blue-2), var(--gri-blue));
}

.result-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 16px 0 12px;
  border-bottom: 1px solid var(--gri-line);
}

.result-head strong {
  display: block;
  font-size: 18px;
  line-height: 1.3;
}

.result-head span {
  display: block;
  color: var(--gri-muted);
  font-size: 13px;
  margin-top: 2px;
}

.products {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}

.product-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 132px 112px;
  gap: 14px;
  align-items: center;
  padding: 14px;
  border: 1px solid var(--gri-line);
  border-radius: var(--radius);
  background: #fff;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  min-width: 0;
}

.product-row:hover {
  border-color: #cbd5e1;
  box-shadow: 0 8px 22px rgba(29, 32, 41, 0.06);
}

.product-main {
  min-width: 0;
}

.product-sku {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 5px;
}

.product-sku strong {
  font-size: 15px;
  line-height: 1.25;
  overflow-wrap: anywhere;
}

.badge {
  display: inline-flex;
  min-height: 22px;
  align-items: center;
  padding: 3px 7px;
  border-radius: 4px;
  background: rgba(0, 125, 185, 0.09);
  color: var(--gri-blue);
  font-size: 11px;
  line-height: 1.2;
  max-width: 100%;
}

.product-desc {
  margin: 0;
  color: #4b5563;
  font-size: 13px;
  line-height: 1.45;
  overflow-wrap: anywhere;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-meta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 8px;
  color: var(--gri-muted);
  font-size: 12px;
}

.price {
  text-align: right;
}

.price strong {
  display: block;
  font-size: 18px;
  line-height: 1.2;
}

.price span {
  display: block;
  color: var(--gri-muted);
  font-size: 12px;
  margin-top: 3px;
}

.row-actions {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  min-width: 0;
}

.qty-control {
  display: grid;
  grid-template-columns: 34px minmax(38px, 1fr) 34px;
  height: 36px;
  border: 1px solid #d7dbe3;
  border-radius: 4px;
  overflow: hidden;
}

.qty-control button {
  border: 0;
  background: var(--gri-soft);
  color: var(--gri-text);
}

.qty-control input {
  width: 100%;
  min-width: 0;
  border: 0;
  border-left: 1px solid #d7dbe3;
  border-right: 1px solid #d7dbe3;
  text-align: center;
  outline: none;
}

.primary-button,
.secondary-button,
.ghost-button,
.load-more,
.add-button {
  min-height: 38px;
  border-radius: 4px;
  border: 1px solid transparent;
  padding: 8px 12px;
  font-weight: 600;
  transition: transform 0.12s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.primary-button,
.add-button {
  color: #fff;
  background: linear-gradient(180deg, var(--gri-blue-2), var(--gri-blue));
  border-color: var(--gri-blue);
}

.primary-button:hover,
.add-button:hover {
  box-shadow: 0 8px 18px rgba(0, 125, 185, 0.24);
}

.secondary-button,
.load-more {
  color: var(--gri-blue);
  background: #fff;
  border-color: rgba(0, 125, 185, 0.35);
}

.ghost-button {
  color: var(--gri-muted);
  background: transparent;
  border-color: var(--gri-line);
}

.ghost-button:hover,
.secondary-button:hover,
.load-more:hover {
  color: var(--gri-blue);
  border-color: var(--gri-blue);
}

.load-more {
  display: block;
  width: 100%;
  margin-top: 14px;
}

.load-more[hidden] {
  display: none;
}

.estimate-panel {
  position: sticky;
  top: 20px;
  min-width: 0;
}

.estimate-card {
  padding: 18px;
}

.estimate-title {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--gri-line);
}

.estimate-title h2 {
  margin: 0 0 3px;
  font-size: 22px;
  line-height: 1.2;
}

.estimate-title span {
  color: var(--gri-muted);
  font-size: 13px;
}

.estimate-items {
  display: grid;
  gap: 10px;
  min-height: 112px;
  max-height: 42vh;
  overflow: auto;
  padding: 14px 0;
  border-bottom: 1px solid var(--gri-line);
}

.empty-cart {
  display: grid;
  place-items: center;
  min-height: 96px;
  border: 1px dashed #cbd5e1;
  border-radius: var(--radius);
  color: var(--gri-muted);
  text-align: center;
  padding: 18px;
}

.cart-item {
  display: grid;
  gap: 8px;
  padding: 11px;
  border: 1px solid var(--gri-line);
  border-radius: var(--radius);
}

.cart-line {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: 10px;
}

.cart-line strong {
  font-size: 13px;
  line-height: 1.3;
  overflow-wrap: anywhere;
}

.cart-line button {
  width: 28px;
  height: 28px;
  border: 1px solid var(--gri-line);
  background: #fff;
  border-radius: 4px;
  color: var(--gri-muted);
}

.cart-sub {
  color: var(--gri-muted);
  font-size: 12px;
}

.cart-bottom {
  display: grid;
  grid-template-columns: 116px 1fr;
  gap: 10px;
  align-items: center;
}

.cart-sum {
  text-align: right;
  font-weight: 700;
}

.audit-panel {
  display: grid;
  gap: 10px;
  padding: 14px 0;
  border-bottom: 1px solid var(--gri-line);
}

.audit-title {
  font-weight: 800;
}

.audit-summary,
.audit-empty {
  color: var(--gri-muted);
  font-size: 13px;
  line-height: 1.45;
}

.audit-list {
  display: grid;
  gap: 8px;
}

.audit-item {
  display: grid;
  gap: 4px;
  padding: 10px 12px;
  border: 1px solid var(--gri-line);
  border-left-width: 4px;
  border-radius: 4px;
  background: #fff;
  font-size: 13px;
  line-height: 1.4;
}

.audit-item strong {
  font-size: 13px;
}

.audit-item span {
  color: var(--gri-muted);
}

.audit-danger {
  border-left-color: #dc2626;
  background: #fff7f7;
}

.audit-warning {
  border-left-color: #f59e0b;
  background: #fffbeb;
}

.audit-ok {
  border-left-color: #16a34a;
  background: #f6fff9;
}

.totals {
  display: grid;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--gri-line);
}

.totals > div,
.total-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.totals strong {
  font-size: 18px;
}

.total-line strong {
  color: var(--gri-blue);
  font-size: 24px;
}

.actions {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding-top: 14px;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  max-width: min(520px, calc(100vw - 32px));
  padding: 11px 14px;
  border-radius: 4px;
  background: var(--gri-text);
  color: #fff;
  box-shadow: var(--gri-shadow);
  z-index: 100;
}

@media (max-width: 1120px) {
  .calc-layout {
    grid-template-columns: 1fr;
  }

  .estimate-panel {
    position: static;
  }

  .estimate-items {
    max-height: none;
  }
}

@media (max-width: 820px) {
  .gri-calc {
    padding: 14px;
  }

  .calc-header,
  .brand {
    align-items: flex-start;
  }

  .calc-header {
    flex-direction: column;
  }

  .header-meta {
    justify-content: flex-start;
  }

  .toolbar {
    grid-template-columns: 1fr;
  }

  .product-row {
    grid-template-columns: 1fr;
  }

  .price {
    text-align: left;
  }

  .row-actions {
    grid-template-columns: minmax(120px, 170px) minmax(120px, 1fr);
  }
}

@media (max-width: 520px) {
  .brand {
    flex-direction: column;
  }

  .brand h1 {
    font-size: 24px;
  }

  .row-actions,
  .cart-bottom {
    grid-template-columns: 1fr;
  }

  .cart-sum {
    text-align: left;
  }
}

@media print {
  body {
    background: #fff;
  }

  .toolbar,
  .quick-row,
  .catalog-panel,
  .header-meta,
  .actions,
  .ghost-button {
    display: none !important;
  }

  .gri-calc {
    padding: 0;
  }

  .calc-header,
  .estimate-card {
    box-shadow: none;
    border: 0;
  }

  .calc-layout {
    display: block;
  }

  .estimate-panel {
    position: static;
  }
}