/*
  CostIntel calculator.css
  Calculator-specific components for CostIntel.co.uk
  Requires /assets/css/main.css
*/

/* =========================
   1. Calculator Layout
========================= */

.calculator-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  gap: var(--ci-space-7);
  align-items: start;
}

.calculator-card {
  display: grid;
  gap: var(--ci-space-5);
  background: var(--ci-surface);
  border: 2px solid var(--ci-line-strong);
  border-radius: var(--ci-radius-lg);
  padding: var(--ci-space-6);
  box-shadow: var(--ci-shadow-md);
}

.calculator-card .ci-section-header {
  margin-bottom: 0;
}

.calculator-field {
  display: grid;
  gap: var(--ci-space-2);
  padding-block: var(--ci-space-3);
}

.calculator-field + .calculator-field {
  margin-top: var(--ci-space-1);
}

.calculator-field label,
.calculator-field legend {
  color: var(--ci-ink);
  font-size: var(--ci-text-sm);
  font-weight: 700;
}

.calculator-field fieldset,
fieldset.calculator-field {
  margin: 0;
  border: 0;
  padding-inline: 0;
}

.calculator-card > .ci-button {
  width: 100%;
}

/* =========================
   2. Inputs with Units
========================= */

.calculator-input-with-unit {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  background: var(--ci-surface);
  border: 1px solid var(--ci-line-strong);
  border-radius: var(--ci-radius-md);
  overflow: hidden;
  transition: border-color var(--ci-transition), box-shadow var(--ci-transition);
}

.calculator-input-with-unit:focus-within {
  border-color: var(--ci-primary);
  box-shadow: 0 0 0 4px rgba(14, 165, 164, 0.12);
}

.calculator-input-with-unit .ci-input {
  border: 0;
  border-radius: 0;
  box-shadow: none;
}

.calculator-input-with-unit .ci-input:focus {
  box-shadow: none;
}

.calculator-input-with-unit span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 100%;
  padding-inline: var(--ci-space-4);
  color: var(--ci-muted);
  background: var(--ci-surface-soft);
  border-left: 1px solid var(--ci-line-strong);
  font-size: var(--ci-text-sm);
  font-weight: 700;
}

/* =========================
   3. Segmented Controls
========================= */

.segmented-control {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--ci-space-2);
}

.segmented-control-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.segmented-control label {
  position: relative;
  cursor: pointer;
}

.segmented-control input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.segmented-control span {
  display: flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  text-align: center;
  border: 1px solid var(--ci-line-strong);
  border-radius: var(--ci-radius-sm);
  background: var(--ci-surface);
  color: var(--ci-slate);
  font-size: var(--ci-text-sm);
  font-weight: 650;
  transition: border-color var(--ci-transition), background var(--ci-transition), color var(--ci-transition), box-shadow var(--ci-transition);
}

.segmented-control input:checked + span {
  border-color: var(--ci-primary);
  background: var(--ci-primary-soft);
  color: var(--ci-primary-dark);
}

.segmented-control input:focus-visible + span {
  outline: 3px solid rgba(14, 165, 164, 0.38);
  outline-offset: 3px;
}

.segmented-control label:hover span {
  border-color: var(--ci-slate);
}

/* =========================
   4. Toggle Rows
========================= */

.calculator-toggle-row {
  grid-template-columns: 1fr auto;
  gap: var(--ci-space-5);
  align-items: center;
}

.calculator-toggle-row input[type="checkbox"] {
  appearance: none;
  width: 48px;
  height: 28px;
  border-radius: var(--ci-radius-pill);
  border: 1px solid var(--ci-line-strong);
  background: var(--ci-surface-soft);
  position: relative;
  cursor: pointer;
  transition: background var(--ci-transition), border-color var(--ci-transition);
}

.calculator-toggle-row input[type="checkbox"]::before {
  content: "";
  position: absolute;
  width: 22px;
  height: 22px;
  top: 2px;
  left: 2px;
  border-radius: 50%;
  background: #fff;
  box-shadow: var(--ci-shadow-sm);
  transition: transform var(--ci-transition);
}

.calculator-toggle-row input[type="checkbox"]:checked {
  background: var(--ci-primary);
  border-color: var(--ci-primary);
}

.calculator-toggle-row input[type="checkbox"]:checked::before {
  transform: translateX(20px);
}

.calculator-toggle-row input[type="checkbox"]:focus-visible {
  outline: 3px solid rgba(14, 165, 164, 0.38);
  outline-offset: 3px;
}

/* =========================
   5. Range Slider
========================= */

.calculator-field input[type="range"] {
  width: 100%;
  accent-color: var(--ci-primary);
  cursor: pointer;
}

.calculator-range-labels {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--ci-muted-light);
  font-size: var(--ci-text-sm);
}

.calculator-range-labels strong {
  color: var(--ci-ink);
  font-variant-numeric: tabular-nums;
}

/* =========================
   6. Context and Feedback
========================= */

.calculator-context {
  display: grid;
  gap: var(--ci-space-1);
  padding: var(--ci-space-4);
  border: 1px solid var(--ci-line-strong);
  border-radius: var(--ci-radius-md);
  background: var(--ci-surface-soft);
}

.calculator-context strong {
  color: var(--ci-ink);
  font-size: var(--ci-text-sm);
}

.calculator-context span {
  color: var(--ci-muted);
  font-size: var(--ci-text-sm);
}

/* =========================
   7. Result Panel
========================= */

.calculator-result {
  position: sticky;
  top: calc(var(--ci-header-height) + var(--ci-space-5));
  display: grid;
  gap: var(--ci-space-5);
  border: 2px solid var(--ci-line-strong);
  border-radius: var(--ci-radius-lg);
  padding: var(--ci-space-6);
  background: var(--ci-surface);
  box-shadow: var(--ci-shadow-md);
}

.calculator-total {
  display: grid;
  gap: var(--ci-space-1);
  padding: var(--ci-space-6);
  border-radius: var(--ci-radius-md);
  background: linear-gradient(180deg, #0f172a, #1e293b);
  color: #fff;
  border: 2px solid #1e293b;
}

.calculator-total span {
  color: #cbd5e1;
  font-size: var(--ci-text-sm);
  font-weight: 650;
}

.calculator-total strong {
  color: #fff;
  font-size: clamp(2rem, 5vw, 2.8rem);
  line-height: 1.1;
  letter-spacing: -0.04em;
  font-variant-numeric: tabular-nums;
}

.calculator-total-secondary {
  display: flex;
  justify-content: space-between;
  gap: var(--ci-space-4);
  align-items: center;
  padding: var(--ci-space-4);
  border: 1px solid var(--ci-line-strong);
  border-radius: var(--ci-radius-md);
  background: var(--ci-surface-soft);
}

.calculator-total-secondary span {
  color: var(--ci-muted);
  font-size: var(--ci-text-sm);
}

.calculator-total-secondary strong {
  color: var(--ci-ink);
  font-variant-numeric: tabular-nums;
}

.calculator-breakdown {
  display: grid;
  gap: var(--ci-space-3);
}

.calculator-breakdown .ci-metric-row {
  border: 1px solid var(--ci-line);
  border-radius: var(--ci-radius-sm);
  padding: 0.65rem 0.8rem;
  background: #fff;
}

.calculator-breakdown .ci-metric-row:last-child {
  border-bottom: 1px solid var(--ci-line);
}

.calculator-adjustments {
  display: grid;
  gap: var(--ci-space-1);
  padding: var(--ci-space-4);
  border: 1px solid var(--ci-line-strong);
  border-radius: var(--ci-radius-md);
  background: var(--ci-surface-soft);
}

.calculator-adjustments strong {
  color: var(--ci-ink);
  font-size: var(--ci-text-sm);
}

.calculator-adjustments span {
  color: var(--ci-muted);
  font-size: var(--ci-text-sm);
}

.calculator-note {
  padding: var(--ci-space-4);
  border-left: 4px solid var(--ci-accent);
  border-radius: var(--ci-radius-sm);
  background: var(--ci-accent-soft);
  color: var(--ci-ink-soft);
  font-size: var(--ci-text-sm);
}

.calculator-result .ci-button {
  width: 100%;
}

/* =========================
   8. Tables
========================= */

.responsive-table {
  overflow-x: auto;
  border: 1px solid var(--ci-line-strong);
  border-radius: var(--ci-radius-lg);
  background: var(--ci-surface);
  box-shadow: var(--ci-shadow-sm);
}

.cost-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 680px;
  font-size: var(--ci-text-sm);
}

.cost-table th,
.cost-table td {
  padding: var(--ci-space-4);
  text-align: left;
  border-bottom: 1px solid var(--ci-line);
}

.cost-table th {
  background: var(--ci-surface-soft);
  color: var(--ci-ink);
  font-weight: 750;
}

.cost-table td {
  color: var(--ci-slate);
}

.cost-table td:last-child {
  color: var(--ci-ink);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.cost-table tr:last-child td {
  border-bottom: 0;
}

/* =========================
   9. Calculator Page Helpers
========================= */

.calculator-anchor-panel {
  display: flex;
  flex-wrap: wrap;
  gap: var(--ci-space-2);
  padding: var(--ci-space-4);
  border: 1px solid var(--ci-line-strong);
  border-radius: var(--ci-radius-lg);
  background: var(--ci-surface);
}

.calculator-mini-note {
  font-size: var(--ci-text-sm);
  color: var(--ci-muted-light);
  background: var(--ci-surface-soft);
  border: 1px solid var(--ci-line-strong);
  border-radius: var(--ci-radius-md);
  padding: var(--ci-space-4);
}

/* =========================
   10. Responsive Behaviour
========================= */

@media (max-width: 980px) {
  .calculator-layout {
    grid-template-columns: 1fr;
  }

  .calculator-result {
    position: static;
  }
}

@media (max-width: 720px) {
  .calculator-card,
  .calculator-result {
    padding: var(--ci-space-5);
  }

  .calculator-total {
    padding: var(--ci-space-5);
  }

  .segmented-control,
  .segmented-control-3 {
    grid-template-columns: 1fr;
  }

  .calculator-toggle-row {
    grid-template-columns: 1fr auto;
  }

  .calculator-total-secondary {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 520px) {
  .calculator-card,
  .calculator-result {
    padding: var(--ci-space-4);
  }

  .calculator-total {
    padding: var(--ci-space-4);
  }

  .cost-table th,
  .cost-table td {
    padding: var(--ci-space-3);
  }
}