:root {
  --entera-green: #16a34a;
  --entera-green-dark: #0f7a37;
  --entera-green-light: #e7f7ee;
  --ink: #1f2937;
  --ink-soft: #6b7280;
  --border: #e5e7eb;
  --danger: #b45309;
  --danger-bg: #fff7ed;
  --radius: 18px;
  --shadow: 0 20px 60px -20px rgba(15, 122, 55, 0.25), 0 4px 12px rgba(0, 0, 0, 0.04);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: "Segoe UI", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  min-height: 100%;
}

body {
  position: relative;
  overflow-x: hidden;
}

.bg-decor {
  position: fixed;
  inset: 0;
  z-index: -1;
  background: linear-gradient(120deg, #e7f7ee 0%, #f3f7fb 45%, #eef0fb 100%);
}

.bg-decor::before,
.bg-decor::after {
  content: "";
  position: absolute;
  width: 480px;
  height: 480px;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.5;
}

.bg-decor::before {
  top: -160px;
  left: -140px;
  background: #86efac;
}

.bg-decor::after {
  bottom: -180px;
  right: -160px;
  background: #c7d2fe;
}

.page {
  max-width: 980px;
  margin: 0 auto;
  padding: 48px 20px 64px;
}

.page__header {
  text-align: center;
  margin-bottom: 28px;
}

.logo {
  display: inline-block;
  font-weight: 800;
  font-size: 22px;
  letter-spacing: 0.08em;
  color: var(--entera-green);
  margin-bottom: 10px;
}

.page__header h1 {
  margin: 0 0 10px;
  font-size: clamp(24px, 4vw, 32px);
  color: var(--ink);
}

.subtitle {
  margin: 0 auto;
  max-width: 560px;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.5;
}

.card {
  background: #ffffff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 28px;
}

.calc-table-wrap {
  overflow-x: auto;
  border-radius: 14px;
  border: 1px solid var(--border);
}

.calc-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 640px;
}

.calc-table th,
.calc-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.calc-table thead th {
  background: var(--entera-green-light);
  border-bottom: 1px solid var(--border);
}

.calc-table tbody tr:last-child th,
.calc-table tbody tr:last-child td {
  border-bottom: none;
}

.row-label {
  width: 190px;
  min-width: 160px;
  color: var(--ink-soft);
  font-weight: 600;
  font-size: 13px;
  background: #fafafa;
  position: sticky;
  left: 0;
}

.row--products .row-label {
  background: var(--entera-green-light);
}

.row-label__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--entera-green);
  color: #fff;
  font-size: 11px;
  margin-right: 8px;
}

.product-header {
  min-width: 200px;
}

.product-toggle {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-weight: 700;
  font-size: 14px;
  color: var(--ink);
}

.product-toggle input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--entera-green);
  cursor: pointer;
}

.product-icon {
  font-size: 18px;
}

.product-cell {
  min-width: 200px;
  transition: opacity 0.15s ease;
}

.product-cell.is-disabled {
  opacity: 0.4;
}

.volume-input {
  width: 100%;
  max-width: 160px;
  padding: 10px 12px;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  font-size: 15px;
  font-family: inherit;
  color: var(--ink);
  transition: border-color 0.15s ease;
}

.volume-input:focus {
  outline: none;
  border-color: var(--entera-green);
}

.volume-input:disabled {
  background: #f3f4f6;
  cursor: not-allowed;
}

.input-label {
  display: block;
  margin-bottom: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
}

.input-hint {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  color: var(--ink-soft);
}

.annual-value {
  font-size: 20px;
  font-weight: 700;
  color: var(--ink);
}

.annual-sub {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  color: var(--ink-soft);
}

.tariff-name {
  font-weight: 700;
  font-size: 14px;
  color: var(--entera-green-dark);
  margin-bottom: 4px;
}

.tariff-price {
  font-size: 16px;
  font-weight: 700;
}

.tariff-custom .tariff-name {
  color: var(--danger);
}

.tariff-custom .tariff-price {
  font-size: 13px;
  font-weight: 600;
  color: var(--danger);
}

.tariff-placeholder {
  color: var(--ink-soft);
  font-size: 13px;
}

.empty-state {
  margin-top: 22px;
  padding: 18px;
  text-align: center;
  color: var(--ink-soft);
  font-size: 14px;
  background: #fafafa;
  border-radius: 12px;
  border: 1px dashed var(--border);
}

.result {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}

.result__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 6px 0;
  font-size: 15px;
  color: var(--ink-soft);
}

.result__row strong {
  color: var(--ink);
  font-weight: 700;
}

.result__row--discount {
  color: var(--entera-green-dark);
}

.result__row--discount strong {
  color: var(--entera-green-dark);
}

.result__row--total {
  margin-top: 6px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  font-size: 20px;
  color: var(--ink);
}

.result__row--total strong {
  font-size: 26px;
  color: var(--entera-green-dark);
}

.result__note {
  margin: 12px 0 0;
  padding: 10px 14px;
  border-radius: 10px;
  background: var(--danger-bg);
  color: var(--danger);
  font-size: 13px;
  line-height: 1.5;
  display: none;
}

.result__note.is-visible {
  display: block;
}

.section-title {
  margin: 0 0 6px;
  font-size: 19px;
  color: var(--ink);
}

.section-subtitle {
  margin: 0 0 20px;
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.5;
}

.savings-card {
  margin-bottom: 24px;
}

.savings-basics {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.basics-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 180px;
}

.basics-field label {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
}

.basics-field .input-hint {
  margin-top: 2px;
}

/* === Блоки экономии по продуктам === */
.savings-block {
  border: 1.5px solid var(--border);
  border-radius: 16px;
  padding: 18px 20px;
  margin-bottom: 16px;
  background: #fafafa;
}

.savings-block--placeholder {
  background: #f5f5f5;
  opacity: 0.85;
}

.savings-block-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}

.savings-block-icon {
  font-size: 18px;
}

.savings-block-title {
  font-weight: 700;
  font-size: 15px;
  color: var(--ink);
}

.savings-block-volume {
  font-size: 13.5px;
  margin-bottom: 10px;
}

.volume-line-label {
  color: var(--ink-soft);
}

.volume-line-muted {
  color: var(--ink-soft);
  font-style: italic;
}

.savings-block-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 12px;
  font-size: 13.5px;
}

.block-stat-line--bad strong {
  color: var(--danger);
}

.block-stat-line--good strong {
  color: var(--entera-green-dark);
}

.block-stat-line--money strong {
  color: var(--entera-green-dark);
  font-size: 15px;
}

.savings-placeholder-note {
  margin: 0;
  font-size: 13px;
  color: var(--ink-soft);
  font-style: italic;
}

.basics-field--inline {
  margin-bottom: 12px;
  max-width: 340px;
}

.detail-hint--muted {
  margin-top: 4px;
  margin-bottom: 0;
}

.detail-toggle {
  border: none;
  background: none;
  color: var(--entera-green-dark);
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  padding: 4px 0;
}

.detail-toggle:hover {
  text-decoration: underline;
}

.detail-panel {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--border);
}

.detail-hint {
  margin: 0 0 12px;
  font-size: 12.5px;
  color: var(--ink-soft);
  line-height: 1.5;
}

/* === Детализация ЕПД по источникам === */
.channels-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}

.channel-card {
  border: 1.5px solid var(--border);
  border-radius: 12px;
  padding: 12px;
  background: #fff;
}

.channel-card-label {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 8px;
}

.channel-card .volume-input {
  width: 100%;
  max-width: none;
}

.channel-stats {
  margin-top: 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-size: 12px;
}

.channel-stats-line--bad strong {
  color: var(--danger);
}

.channel-stats-line--good strong {
  color: var(--entera-green-dark);
}

/* === Детализация Актов сверки === */
.sverka-detail {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

.sverka-computed {
  margin-top: 14px;
  font-size: 13px;
  color: var(--ink-soft);
}

.sverka-computed strong {
  color: var(--ink);
}

.freq-buttons {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.freq-btn {
  padding: 10px 14px;
  border-radius: 10px;
  border: 1.5px solid var(--border);
  background: #fff;
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-soft);
  cursor: pointer;
  transition: all 0.15s ease;
}

.freq-btn:hover {
  border-color: var(--entera-green);
}

.freq-btn.active {
  background: var(--entera-green);
  border-color: var(--entera-green);
  color: #fff;
}

/* === Итоговый блок экономии === */
.savings-result {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 2px dashed var(--border);
}

.savings-totals-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--entera-green-dark);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 10px;
}

.savings-totals {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
  padding: 16px;
  background: var(--entera-green-light);
  border-radius: 14px;
}

.savings-total-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.savings-total-item span:first-child {
  font-size: 12px;
  color: var(--ink-soft);
}

.savings-total-item strong {
  font-size: 20px;
  color: var(--entera-green-dark);
}

.savings-total-item--money strong {
  font-size: 24px;
}

.savings-sub {
  font-size: 12px;
  color: var(--ink-soft);
}

/* === Итоговый блок === */
.summary-card {
  margin-bottom: 24px;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px;
  margin-bottom: 20px;
}

.summary-col {
  border-radius: 14px;
  padding: 18px 20px;
  background: #fafafa;
  border: 1.5px solid var(--border);
}

.summary-col--green {
  background: var(--entera-green-light);
  border-color: transparent;
}

.summary-col--accent {
  background: #173d7a;
  border-color: transparent;
}

.summary-col-title {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
  margin-bottom: 8px;
}

.summary-col--accent .summary-col-title {
  color: rgba(255, 255, 255, 0.75);
}

.summary-value {
  font-size: 26px;
  font-weight: 800;
  color: var(--ink);
  line-height: 1.1;
}

.summary-col--green .summary-value {
  color: var(--entera-green-dark);
}

.summary-col--accent .summary-value {
  color: #fff;
}

.summary-note {
  margin-top: 6px;
  font-size: 12px;
  color: var(--ink-soft);
}

.summary-col--accent .summary-note {
  color: rgba(255, 255, 255, 0.65);
}

.download-btn {
  display: block;
  width: 100%;
  padding: 16px 20px;
  border: none;
  border-radius: 14px;
  background: var(--entera-green);
  color: #fff;
  font-family: inherit;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.15s ease;
}

.download-btn:hover {
  background: var(--entera-green-dark);
}

.download-hint {
  margin: 10px 0 0;
  text-align: center;
  font-size: 12px;
  color: var(--ink-soft);
}

/* === Печатный отчёт (виден только при печати/сохранении в PDF) === */
#printReport {
  display: none;
}

@media print {
  .bg-decor,
  .page {
    display: none !important;
  }

  #printReport.is-active {
    display: block !important;
  }
}

.page__footer {
  text-align: center;
  margin-top: 26px;
  color: var(--ink-soft);
  font-size: 12.5px;
  line-height: 1.6;
}

.page__footer p {
  margin: 4px 0;
}

@media (max-width: 640px) {
  .page {
    padding: 28px 12px 48px;
  }

  .card {
    padding: 18px;
    border-radius: 14px;
  }

  .row-label {
    width: 120px;
    min-width: 120px;
    font-size: 12px;
  }

  .calc-table th,
  .calc-table td {
    padding: 10px 10px;
  }

  .result__row--total {
    font-size: 17px;
  }

  .result__row--total strong {
    font-size: 21px;
  }
}