/* === ГДЗС === */
.gdzs-page {
  width: 100%;
}

.gdzs-body {
  container-type: inline-size;
}

.gdzs-tabs {
  margin-bottom: 16px;
}

.gdzs-block {
  margin-bottom: 14px;
}
.gdzs-block > div.tool-accordion__header {
  cursor: default;
}
.gdzs-block > div.tool-accordion__header:hover .tool-accordion__title {
  color: var(--color-on-surface);
}
.gdzs-calc-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 220px);
  gap: 14px;
  margin-bottom: 14px;
  align-items: stretch;
}
/* Пока ширины на 3 колонки не хватает — блок «Расчёт фактических значений»
   занимает всю строку под калькулятором/результатами */
.gdzs-calc-row > .gdzs-block[data-block-id="fact"] {
  grid-column: 1 / -1;
}
.gdzs-calc-row .gdzs-results--fact {
  grid-template-columns: repeat(2, 1fr);
}
.gdzs-calc-row > .gdzs-block {
  margin-bottom: 0;
}

.gdzs-formulas-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-bottom: 14px;
  align-items: start;
}
.gdzs-formulas-row > .gdzs-block {
  margin-bottom: 0;
}

@container (min-width: 1100px) {
  .gdzs-calc-row {
    grid-template-columns: minmax(0, 1fr) minmax(0, 220px) minmax(0, 300px);
  }
  .gdzs-calc-row > .gdzs-block[data-block-id="fact"] {
    grid-column: auto;
  }
  .gdzs-calc-row .gdzs-results--fact {
    grid-template-columns: minmax(0, 1fr);
  }
  .gdzs-formulas-row {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }
}
.gdzs-calc-row .gdzs-form {
  gap: 12px;
}
.gdzs-calc-row .gdzs-form-row {
  grid-template-columns: 1fr;
  gap: 6px;
}
.gdzs-calc-row .gdzs-form-input {
  max-width: 100%;
  width: 100%;
}
.gdzs-calc-row .gdzs-segmented {
  display: flex;
  width: 100%;
}
.gdzs-calc-row .gdzs-segmented .gdzs-seg {
  flex: 1 1 auto;
  text-align: center;
  padding: 7px 10px;
}
.gdzs-calc-row .gdzs-segmented--round {
  flex-wrap: wrap;
}
.gdzs-calc-row .gdzs-segmented--round .gdzs-seg {
  flex: 1 1 calc(50% - 8px);
  font-size: 12px;
}
.gdzs-calc-row .gdzs-results {
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
}
.gdzs-calc-row .gdzs-result {
  padding: 6px 10px;
}
.gdzs-calc-row .gdzs-result__label {
  font-size: 11px;
  margin-bottom: 2px;
}
.gdzs-calc-row .gdzs-result__value {
  font-size: 15px;
}
.gdzs-calc-row .gdzs-result__unit {
  font-size: 11px;
}
.gdzs-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.gdzs-form-row {
  display: grid;
  grid-template-columns: 220px 1fr;
  align-items: center;
  gap: 16px;
}
.gdzs-form-label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-on-surface);
}
.gdzs-form-hint {
  font-size: 12px;
  font-weight: 400;
  color: var(--color-on-surface-secondary);
  margin-left: 4px;
}
.gdzs-form-input {
  height: 38px;
  padding: 0 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-on-surface);
  font-size: 14px;
  font-family: var(--font-family);
  transition: border-color 0.15s, background 0.15s;
  max-width: 240px;
}
.gdzs-form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  background: var(--color-surface);
}
input[type="time"].gdzs-form-input {
  font-variant-numeric: tabular-nums;
  color-scheme: light;
}
[data-theme="dark"] input[type="time"].gdzs-form-input { color-scheme: dark; }

.gdzs-segmented {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 4px;
  background: var(--color-bg);
  border-radius: var(--radius-sm);
  padding: 4px;
  border: 1px solid var(--color-border);
}
.gdzs-seg {
  padding: 7px 14px;
  border: none;
  background: transparent;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-on-surface-secondary);
  font-family: var(--font-family);
  transition: background 0.15s, color 0.15s;
}
.gdzs-seg:hover { background: var(--color-hover); }
.gdzs-seg--active {
  background: var(--color-primary);
  color: #fff;
}
.gdzs-seg--active:hover { background: var(--color-primary); opacity: 0.92; }
.gdzs-segmented--round { flex-wrap: wrap; }

[data-theme="dark"] .gdzs-seg--active { color: #000; }

.gdzs-form-row .gdzs-segmented { justify-self: start; }

.gdzs-results {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
.gdzs-results--fact {
  grid-template-columns: repeat(2, 1fr);
  margin-top: 14px;
}
.gdzs-result {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
}
.gdzs-result__label {
  font-size: 12px;
  color: var(--color-on-surface-secondary);
  font-weight: 600;
  margin-bottom: 4px;
}
.gdzs-result__value {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary);
  font-variant-numeric: tabular-nums;
}
.gdzs-result__unit {
  font-size: 13px;
  color: var(--color-on-surface-secondary);
  font-weight: 500;
}

.gdzs-formulas {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 0;
  padding: 16px 18px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-on-surface);
  font-variant-numeric: tabular-nums;
  font-family: 'Cambria Math', 'STIX Two Math', Cambria, 'Times New Roman', serif;
}
.gdzs-frm {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 10px;
  padding: 12px 14px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 16px;
  line-height: 1.2;
}
.gdzs-frm__var {
  font-weight: 700;
  font-style: italic;
  color: var(--color-primary);
  font-size: 17px;
}
.gdzs-frm__op {
  color: var(--color-on-surface-secondary);
  font-weight: 500;
  font-size: 16px;
}
.gdzs-frm__pl {
  color: var(--color-on-surface);
  font-style: italic;
}
.gdzs-frm__res {
  font-weight: 700;
  color: var(--color-primary);
  font-size: 17px;
  font-style: normal;
  font-variant-numeric: tabular-nums;
}
.gdzs-frac {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  vertical-align: middle;
  text-align: center;
  line-height: 1.15;
  margin: 0 2px;
}
.gdzs-frac__num {
  padding: 0 8px 2px;
  border-bottom: 1.5px solid currentColor;
  display: inline-flex;
  gap: 4px;
  align-items: center;
}
.gdzs-frac__den {
  padding: 2px 8px 0;
  display: inline-flex;
  gap: 4px;
  align-items: center;
}
.gdzs-formulas__note {
  padding: 4px 6px;
  font-size: 12px;
  font-family: var(--font-family);
  font-style: normal;
  color: var(--color-on-surface-secondary);
}

.gdzs-table-wrap {
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
}
.gdzs-table {
  width: 100%;
  table-layout: fixed;
  border-collapse: collapse;
  font-size: 12px;
  margin: 0;
}
.gdzs-table th,
.gdzs-table td {
  padding: 10px 8px;
  border-right: 1px solid var(--color-border);
  text-align: center;
  vertical-align: middle;
  word-wrap: break-word;
  overflow-wrap: break-word;
  hyphens: auto;
}
.gdzs-table th:last-child,
.gdzs-table td:last-child { border-right: none; }
.gdzs-table thead th {
  background: color-mix(in srgb, var(--color-primary) 10%, transparent);
  color: var(--color-on-surface);
  font-weight: 500;
  line-height: 1.3;
  border-bottom: 1px solid var(--color-border);
}
.gdzs-table tbody td {
  background: var(--color-surface);
  font-weight: 700;
  color: var(--color-primary);
  font-variant-numeric: tabular-nums;
  font-size: 15px;
}

.gdzs-defs {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.gdzs-def {
  display: grid;
  grid-template-columns: 104px 1fr;
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px solid var(--color-border);
}
.gdzs-def:last-child { border-bottom: none; }
.gdzs-def__term {
  margin: 0;
  font-weight: 700;
  color: var(--color-primary);
  font-size: 13.5px;
}
.gdzs-def__text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--color-on-surface);
}

.gdzs-section-text {
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--color-on-surface);
  white-space: pre-wrap;
}


/* === ГДЗС: вкладка СИЗОД === */
.gdzs-sizod {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 16px;
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
  min-height: 500px;
}
.gdzs-sizod__sidebar {
  display: flex;
  flex-direction: column;
  gap: 12px;
  border-right: 1px solid var(--color-border);
  padding-right: 16px;
}
.gdzs-segmented--sizod { width: 100%; }
.gdzs-segmented--sizod .gdzs-seg { flex: 1; }
.gdzs-sizod__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
  overflow-y: auto;
  max-height: calc(100vh - 220px);
}
.gdzs-sizod__item {
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  font-weight: 500;
  color: var(--color-on-surface);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.gdzs-sizod__item:hover { background: var(--color-hover); }
.gdzs-sizod__item--active {
  background: color-mix(in srgb, var(--color-primary) 18%, transparent);
  color: var(--color-primary);
  font-weight: 700;
}
.gdzs-sizod__item--active:hover { background: color-mix(in srgb, var(--color-primary) 25%, transparent); }

.gdzs-sizod__detail {
  padding: 4px 8px 16px;
  overflow-y: auto;
  max-height: calc(100vh - 180px);
}
.gdzs-sizod__title {
  margin: 0 0 12px;
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary);
}
.gdzs-ad-slot:empty { display: none; }
.gdzs-ad-slot .yandex-ad { margin: 0 0 14px; }
.gdzs-sizod__detail .gdzs-ad-slot .yandex-ad { margin: 0 0 14px; }

.gdzs-sizod__image {
  float: left;
  max-width: 320px;
  max-height: 260px;
  width: auto;
  height: auto;
  margin: 6px 16px 8px 0;
  object-fit: contain;
  shape-outside: inset(0);
}
.gdzs-sizod__subtitle {
  clear: left;
  margin: 18px 0 10px;
  font-size: 14px;
  font-weight: 700;
  color: var(--color-on-surface);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.gdzs-sizod__desc {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--color-on-surface);
  white-space: pre-wrap;
}
.gdzs-sizod__empty {
  padding: 40px;
  text-align: center;
  color: var(--color-on-surface-secondary);
}

.gdzs-attrs {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.gdzs-attrs td {
  padding: 8px 12px;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}
.gdzs-attrs tr:last-child td { border-bottom: none; }
.gdzs-attrs__key {
  color: var(--color-on-surface-secondary);
  width: 60%;
}
.gdzs-attrs__val {
  color: var(--color-on-surface);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

@media (max-width: 1400px) {
  .gdzs-results { grid-template-columns: repeat(2, 1fr); }
  .gdzs-form-row { grid-template-columns: 180px 1fr; }
}