/* ============================================================
   CALCULATORS.CSS — rekentools-pagina
   ============================================================ */

.calc-section { padding: clamp(40px, 6vw, 72px) 0 clamp(60px, 8vw, 100px); background: var(--color-light-bg); }

/* Tabs */
.calc-tabs {
  display: flex; flex-wrap: wrap; gap: 10px;
  justify-content: center; margin-bottom: 36px;
}
.calc-tab {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 13px 22px; border-radius: 14px;
  background: #fff; border: 1.5px solid var(--color-border);
  color: var(--color-text); font-weight: 600; font-size: 15px; cursor: pointer;
  transition: all 0.25s ease;
}
.calc-tab svg { width: 20px; height: 20px; }
.calc-tab:hover { border-color: var(--color-primary); transform: translateY(-2px); }
.calc-tab.is-active {
  background: var(--color-dark); color: #fff; border-color: var(--color-dark);
  box-shadow: 0 12px 28px -12px rgba(13, 27, 42, 0.5);
}
.calc-tab.is-active svg { color: var(--color-primary); }

/* Panels */
.calc-panel { display: none; }
.calc-panel.is-active { display: block; animation: calc-fade 0.4s ease; }
@keyframes calc-fade { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: translateY(0); } }

.calc-grid {
  display: grid; grid-template-columns: 1.25fr 0.95fr; gap: 30px; align-items: start;
}
.calc-card {
  background: #fff; border: 1px solid var(--color-border);
  border-radius: 20px; padding: clamp(24px, 3vw, 36px);
  box-shadow: var(--shadow-md);
}
.calc-card h2 { font-size: clamp(22px, 2.4vw, 28px); margin-bottom: 6px; }
.calc-card .calc-intro { color: var(--color-text-gray); font-size: 15px; margin-bottom: 24px; }

.calc-field { margin-bottom: 22px; }
.calc-field > label { display: flex; justify-content: space-between; align-items: baseline; font-weight: 600; font-size: 14px; margin-bottom: 9px; color: var(--color-text); }
.calc-field .val { color: var(--color-primary-dark); font-variant-numeric: tabular-nums; font-weight: 700; }

/* Range slider */
.calc-range { -webkit-appearance: none; appearance: none; width: 100%; height: 7px; border-radius: 999px; background: var(--color-border); outline: none; }
.calc-range::-webkit-slider-thumb { -webkit-appearance: none; appearance: none; width: 24px; height: 24px; border-radius: 50%; background: var(--color-primary); border: 3px solid #fff; box-shadow: 0 2px 8px rgba(var(--color-primary-rgb), 0.5); cursor: pointer; transition: transform 0.15s ease; }
.calc-range::-webkit-slider-thumb:hover { transform: scale(1.12); }
.calc-range::-moz-range-thumb { width: 22px; height: 22px; border-radius: 50%; background: var(--color-primary); border: 3px solid #fff; cursor: pointer; }

/* Segmented choices */
.calc-choices { display: grid; grid-template-columns: repeat(auto-fit, minmax(96px, 1fr)); gap: 8px; }
.calc-choice {
  text-align: center; padding: 11px 8px; border-radius: 11px;
  background: var(--color-light-bg); border: 1.5px solid var(--color-border);
  font-size: 13px; font-weight: 600; color: var(--color-text); cursor: pointer;
  transition: all 0.2s ease; user-select: none;
}
.calc-choice:hover { border-color: var(--color-primary); }
.calc-choice.is-active { background: rgba(var(--color-primary-rgb), 0.14); border-color: var(--color-primary); color: var(--color-primary-dark); }

/* Stepper */
.calc-steppers { display: flex; flex-direction: column; gap: 12px; }
.calc-stepper { display: flex; align-items: center; justify-content: space-between; padding: 10px 14px; background: var(--color-light-bg); border: 1px solid var(--color-border); border-radius: 12px; }
.calc-stepper > span { font-size: 14px; font-weight: 500; }
.calc-stepper-ctrl { display: inline-flex; align-items: center; gap: 12px; }
.calc-stepper-ctrl button { width: 32px; height: 32px; border-radius: 9px; border: 1.5px solid var(--color-border); background: #fff; font-size: 18px; font-weight: 700; color: var(--color-dark); display: inline-flex; align-items: center; justify-content: center; cursor: pointer; transition: all 0.2s ease; line-height: 1; }
.calc-stepper-ctrl button:hover { border-color: var(--color-primary); background: rgba(var(--color-primary-rgb), 0.1); }
.calc-stepper-ctrl output { min-width: 26px; text-align: center; font-weight: 700; font-variant-numeric: tabular-nums; }

/* Toggle checkboxes (services) */
.calc-toggles { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.calc-toggle { display: flex; align-items: center; gap: 10px; padding: 12px 14px; border: 1.5px solid var(--color-border); border-radius: 12px; cursor: pointer; font-size: 14px; transition: all 0.2s ease; }
.calc-toggle:hover { border-color: var(--color-primary); }
.calc-toggle input { width: 18px; height: 18px; accent-color: var(--color-primary); }
.calc-toggle.is-active { background: rgba(var(--color-primary-rgb), 0.1); border-color: var(--color-primary); }

/* Result panel */
.calc-result {
  position: sticky; top: 96px;
  background: linear-gradient(160deg, #0d1b2a, #11243a);
  color: #fff; border-radius: 20px; padding: 30px;
  box-shadow: var(--shadow-lg);
}
.calc-result h3 { color: rgba(255,255,255,0.7); font-size: 13px; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; margin-bottom: 8px; }
.calc-result__big { font-size: clamp(34px, 5vw, 48px); font-weight: 800; color: var(--color-primary); line-height: 1; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.calc-result__sub { color: rgba(255,255,255,0.65); font-size: 14px; margin-top: 6px; }
.calc-result__rows { margin: 22px 0; display: flex; flex-direction: column; gap: 10px; }
.calc-result__row { display: flex; justify-content: space-between; font-size: 14px; padding-bottom: 9px; border-bottom: 1px solid rgba(255,255,255,0.08); }
.calc-result__row span:first-child { color: rgba(255,255,255,0.7); }
.calc-result__row span:last-child { font-weight: 600; color: #fff; font-variant-numeric: tabular-nums; }
.calc-result .btn { width: 100%; margin-top: 6px; }
.calc-result__note { font-size: 12px; color: rgba(255,255,255,0.5); margin-top: 12px; line-height: 1.5; }

@media (max-width: 900px) {
  .calc-grid { grid-template-columns: 1fr; }
  .calc-result { position: static; }
}
@media (max-width: 480px) {
  .calc-toggles { grid-template-columns: 1fr; }
}