/* ============ КАЛЬКУЛЯТОРЫ (в стиле ЛабРазбор) ============ */
.calc-page { padding: 32px 0 72px; }
.calc-wrap { max-width: 760px; margin: 0 auto; }

.calc-breadcrumb { font-size: 13.5px; color: var(--text-muted); margin-bottom: 14px; }
.calc-breadcrumb a { color: var(--text-muted); text-decoration: none; }
.calc-breadcrumb a:hover { color: var(--primary-dark); }
.calc-breadcrumb span { margin: 0 6px; opacity: .6; }

.calc-head h1 { font-size: 30px; font-weight: 800; letter-spacing: -.5px; line-height: 1.22; }
.calc-head .lead { font-size: 15.5px; color: var(--text-muted); line-height: 1.6; margin-top: 10px; }

.calc-card {
  background: #fff; border: 1px solid var(--border); border-radius: 18px;
  padding: 26px; margin-top: 22px; box-shadow: var(--shadow);
}

/* поля ввода */
.calc-field { margin-bottom: 18px; }
.calc-field:last-of-type { margin-bottom: 0; }
.calc-label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 8px; }
.calc-input {
  width: 100%; border: 1px solid var(--border); border-radius: 12px;
  padding: 13px 14px; font-family: inherit; font-size: 16px; color: var(--text); background: #fff;
}
.calc-input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(14,165,164,.12); }
.calc-inline { display: flex; gap: 10px; align-items: stretch; }
.calc-inline .calc-input { flex: 1; }

/* сегмент: пол / единицы */
.calc-seg { display: inline-flex; background: var(--bg-gray); border: 1px solid var(--border); border-radius: 12px; padding: 4px; gap: 4px; }
.calc-seg button {
  border: none; background: none; border-radius: 9px; padding: 10px 16px;
  font-family: inherit; font-size: 14px; font-weight: 600; color: var(--text-muted); cursor: pointer;
  transition: background .15s, color .15s; white-space: nowrap;
}
.calc-seg button.is-active { background: var(--primary); color: #fff; }
.calc-units { flex: 0 0 auto; }

/* кнопка */
.calc-btn {
  width: 100%; margin-top: 22px; border: none; background: var(--primary); color: #fff;
  border-radius: 12px; padding: 14px; font-family: inherit; font-size: 16px; font-weight: 700; cursor: pointer;
  box-shadow: 0 4px 14px rgba(14,165,164,.35); transition: background .15s, transform .15s;
}
.calc-btn:hover { background: var(--primary-dark); transform: translateY(-1px); }

/* результат */
.calc-result { margin-top: 20px; border-radius: 14px; padding: 20px 22px; display: none; }
.calc-result.is-shown { display: block; }
.calc-result__value { font-size: 36px; font-weight: 800; letter-spacing: -.02em; line-height: 1.1; }
.calc-result__unit { font-size: 16px; font-weight: 600; color: var(--text-muted); margin-left: 4px; }
.calc-result__label { font-size: 15.5px; font-weight: 700; margin-top: 6px; }
.calc-result__hint { font-size: 13.5px; color: var(--text-muted); margin-top: 8px; line-height: 1.55; }
.calc-result__main { display: flex; align-items: baseline; gap: 2px; flex-wrap: wrap; }
/* развёрнутая раскладка результата: строки «показатель — значение» */
.calc-result__rows { list-style: none; margin: 14px 0 0; padding: 14px 0 0; border-top: 1px solid rgba(15,23,42,.1); display: grid; gap: 10px; }
.calc-result__rows li { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; font-size: 14px; color: var(--text); }
.calc-result__rows .rk { color: var(--text-muted); }
.calc-result__rows .rv { font-weight: 700; text-align: right; white-space: nowrap; }

/* подзаголовок и подсказка внутри карточки калькулятора */
.calc-subhead { font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; color: var(--text-muted); margin: 22px 0 14px; }
.calc-hint { font-size: 12.5px; color: var(--text-muted); margin-top: -2px; margin-bottom: 8px; line-height: 1.5; }

/* раскрывающийся блок «Дополнительно» */
.calc-toggle {
  width: 100%; margin-top: 18px; background: var(--bg-gray); color: var(--primary-dark);
  border: 1px solid var(--border); border-radius: 12px; padding: 12px 14px;
  font-family: inherit; font-size: 14.5px; font-weight: 600; cursor: pointer;
  display: flex; align-items: center; justify-content: center; gap: 8px; transition: background .15s;
}
.calc-toggle:hover { background: #eef2f2; }
.calc-toggle__ic { font-size: 17px; line-height: 1; }
.calc-extra { margin-top: 16px; }
.calc-extra[hidden] { display: none; }
.calc-result--ok { background: var(--primary-light); }
.calc-result--ok .calc-result__value, .calc-result--ok .calc-result__label { color: var(--primary-dark); }
.calc-result--warn { background: #fff8e6; border: 1px solid #fde9b8; }
.calc-result--warn .calc-result__value, .calc-result--warn .calc-result__label { color: #b45309; }
.calc-result--high { background: #fef2f2; border: 1px solid #fecaca; }
.calc-result--high .calc-result__value, .calc-result--high .calc-result__label { color: #dc2626; }
.calc-error { color: #dc2626; font-size: 13.5px; margin-top: 12px; display: none; }
.calc-error.is-shown { display: block; }

/* секции: нормы / формула / вопросы */
.calc-section { margin-top: 36px; }
.calc-section h2 { font-size: 21px; font-weight: 700; margin-bottom: 14px; letter-spacing: -.01em; }
.calc-section > p { font-size: 15px; line-height: 1.7; color: var(--text); margin: 0 0 12px; }

.calc-table-wrap { border: 1px solid var(--border); border-radius: 12px; overflow-x: auto; }
.calc-table { width: 100%; border-collapse: collapse; font-size: 14.5px; }
.calc-table th, .calc-table td { text-align: left; padding: 11px 14px; border-bottom: 1px solid var(--border); }
.calc-table th { background: var(--bg-gray); font-weight: 700; white-space: nowrap; }
.calc-table tr:last-child td { border-bottom: none; }

.calc-formula {
  background: var(--bg-gray); border: 1px solid var(--border); border-radius: 12px;
  padding: 16px 18px; font-size: 15px; line-height: 1.7;
}
.calc-formula code {
  font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 13.5px;
  background: #fff; padding: 2px 6px; border-radius: 6px; border: 1px solid var(--border);
}
.calc-formula .calc-var { display: block; margin-top: 8px; font-size: 13.5px; color: var(--text-muted); }

.calc-faq details { border: 1px solid var(--border); border-radius: 12px; padding: 14px 16px; margin-bottom: 10px; background: #fff; }
.calc-faq summary { font-weight: 600; font-size: 15px; cursor: pointer; list-style: none; padding-right: 24px; position: relative; }
.calc-faq summary::-webkit-details-marker { display: none; }
.calc-faq summary::after { content: '+'; position: absolute; right: 0; top: -2px; color: var(--text-muted); font-size: 20px; line-height: 1; }
.calc-faq details[open] summary::after { content: '−'; }
.calc-faq details p { margin: 10px 0 0; font-size: 14.5px; color: var(--text-muted); line-height: 1.65; }

.calc-disclaimer {
  margin-top: 30px; font-size: 13px; color: var(--text-muted); line-height: 1.6;
  background: var(--bg-gray); border: 1px solid var(--border); border-radius: 12px; padding: 14px 16px;
}

/* ===== список калькуляторов на /calc ===== */
.calc-cat { margin-top: 34px; }
.calc-cat__title { font-size: 21px; font-weight: 700; margin-bottom: 6px; }
.calc-cat__sub { font-size: 14px; color: var(--text-muted); margin-bottom: 16px; }
.calc-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 12px; }
.calc-tile {
  display: block; text-decoration: none; color: var(--text);
  background: #fff; border: 1px solid var(--border); border-radius: 14px; padding: 16px;
  transition: border-color .15s, transform .15s, box-shadow .15s;
}
.calc-tile:hover { border-color: var(--primary); transform: translateY(-2px); box-shadow: var(--shadow); }
.calc-tile b { display: block; font-size: 15px; font-weight: 700; margin-bottom: 3px; }
.calc-tile span { font-size: 13px; color: var(--text-muted); line-height: 1.4; }
/* ещё в разработке — жёлтым */
.calc-tile--soon { background: #fefce8; border-color: #fde68a; pointer-events: none; }
.calc-tile--soon b { color: #92400e; }
.calc-tile--soon span { color: #b45309; }
.calc-tile--soon b::after { content: ' · скоро'; font-weight: 700; color: #b45309; font-size: 12px; }

/* плашка «раздел в разработке / только для админа» */
.calc-adminbar {
  background: #fde047; color: #713f12;
  border-bottom: 1px solid #eab308;
  font-size: 13.5px; font-weight: 600; text-align: center; padding: 9px 16px;
}
.calc-adminbar b { font-weight: 800; }
.calc-cats-todo { margin-top: 40px; font-size: 14px; color: var(--text-muted); line-height: 1.7; }
.calc-cats-todo b { color: var(--text); }

@media (max-width: 640px) {
  .calc-head h1 { font-size: 24px; }
  .calc-card { padding: 20px; }
  .calc-inline { flex-wrap: wrap; }
  .calc-units { width: 100%; }
  .calc-seg.calc-units { display: flex; }
  .calc-seg.calc-units button { flex: 1; }
}