/* =========================================================
   FENCE CALCULATOR — /fence-calculator/
   Loaded globally via base.njk.
   ========================================================= */

/* ---- Calculator section wrapper ---- */
.calc-section {
  background: var(--color-warm-cream);
}

/* ---- Two-column layout: form (left) + results (right) ---- */
.calc-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 48px;
  align-items: start;
  padding-block: var(--space-xl);
}

/* ---- Form card ---- */
.calc-form {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-md);
}

.calc-form__heading {
  font-family: var(--font-manrope);
  font-size: var(--text-2xl);
  font-weight: 800;
  margin-top: 0;
  margin-bottom: var(--space-3);
  color: var(--color-charcoal);
}

.calc-form__sub {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  margin-top: 0;
  margin-bottom: var(--space-md);
}

/* ---- Fieldsets ---- */
.calc-fieldset {
  border: none;
  padding: 0;
  margin: 0 0 var(--space-md) 0;
}

.calc-fieldset + .calc-fieldset {
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
}

.calc-fieldset legend {
  font-family: var(--font-manrope);
  font-weight: 700;
  font-size: var(--text-base);
  color: var(--color-charcoal);
  margin-bottom: var(--space-3);
  display: block;
  width: 100%;
  padding: 0;
}

.calc-field-label {
  font-family: var(--font-manrope);
  font-weight: 700;
  font-size: var(--text-base);
  color: var(--color-charcoal);
  display: block;
  margin-bottom: var(--space-3);
}

.calc-hint {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-2);
  margin-bottom: 0;
  line-height: 1.5;
}

/* ---- Radio button grid ---- */
.calc-radio-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-2);
}

.calc-radio-grid--4col {
  grid-template-columns: repeat(4, 1fr);
}

.calc-radio-grid--3col {
  grid-template-columns: repeat(3, 1fr);
}

/* Hidden native radio */
.calc-radio-option {
  position: relative;
  cursor: pointer;
}

.calc-radio-option input[type="radio"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}

/* Visual card */
.calc-radio-option__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.65rem 0.5rem;
  font-family: var(--font-manrope);
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--color-charcoal);
  background: var(--color-white);
  transition: border-color 0.12s, background-color 0.12s, color 0.12s;
  min-height: 52px;
  line-height: 1.35;
  cursor: pointer;
  user-select: none;
}

.calc-radio-option input:checked + .calc-radio-option__inner {
  border-color: var(--color-electric-blue);
  background: #EBF2FF;
  color: var(--color-electric-blue);
}

.calc-radio-option input:focus-visible + .calc-radio-option__inner {
  outline: 3px solid var(--color-electric-blue);
  outline-offset: 2px;
}

.calc-radio-option__inner:hover {
  border-color: #176BFF80;
}

/* ---- Number inputs ---- */
.calc-number-wrap {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.calc-number-input {
  font-family: var(--font-manrope);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-charcoal);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.55rem 0.75rem;
  width: 120px;
  transition: border-color 0.12s;
  background: var(--color-white);
}

.calc-number-input:focus {
  outline: none;
  border-color: var(--color-electric-blue);
}

.calc-number-unit {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  white-space: nowrap;
}

/* ---- Error messages ---- */
.calc-error {
  font-size: var(--text-sm);
  color: #C53030;
  margin-top: var(--space-2);
  margin-bottom: 0;
  display: none;
}

.calc-error--show {
  display: block;
}

/* ---- Form actions ---- */
.calc-form__actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
  margin-top: var(--space-md);
}

/* ---- Results panel ---- */
.calc-results-wrap {
  position: sticky;
  top: 96px;
}

/* Empty / placeholder state */
.calc-results-empty {
  background: var(--color-white);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-md);
  text-align: center;
}

.calc-results-empty__icon {
  font-size: 2.5rem;
  line-height: 1;
  margin-bottom: var(--space-3);
  color: var(--color-border);
}

.calc-results-empty__text {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  margin: 0;
  line-height: 1.6;
}

/* Results card */
.calc-results-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.calc-results-card__header {
  background: var(--color-soft-stone);
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--color-border);
}

.calc-results-card__eyebrow {
  font-family: var(--font-manrope);
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--color-electric-blue);
  margin: 0 0 var(--space-2) 0;
}

.calc-results-card__range {
  font-family: var(--font-manrope);
  font-size: clamp(1.6rem, 3.5vw, 2.25rem);
  font-weight: 800;
  color: var(--color-charcoal);
  line-height: 1.1;
  margin: 0;
}

.calc-results-card__perfoot {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin: var(--space-2) 0 0 0;
}

/* Estimate summary list */
.calc-results-card__body {
  padding: var(--space-sm) var(--space-md);
}

.calc-summary {
  list-style: none;
  padding: 0;
  margin: 0;
}

.calc-summary li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-3);
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--color-border);
  font-size: var(--text-sm);
}

.calc-summary li:last-child {
  border-bottom: none;
}

.calc-summary__key {
  color: var(--color-text-muted);
  flex-shrink: 0;
}

.calc-summary__val {
  font-family: var(--font-manrope);
  font-weight: 600;
  color: var(--color-charcoal);
  text-align: right;
}

/* Results CTAs */
.calc-results-card__cta {
  padding: var(--space-sm) var(--space-md);
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

/* Disclaimer */
.calc-disclaimer {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.65;
  padding: var(--space-3) var(--space-md);
  border-top: 1px solid var(--color-border);
  background: var(--color-warm-cream);
  border-radius: 0 0 var(--radius-xl) var(--radius-xl);
}

/* ---- "How this estimate is calculated" expandable ---- */
.calc-transparency {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 0;
  margin-top: var(--space-md);
  overflow: hidden;
}

.calc-transparency > summary {
  font-family: var(--font-manrope);
  font-weight: 700;
  font-size: var(--text-sm);
  cursor: pointer;
  color: var(--color-charcoal);
  padding: var(--space-sm) var(--space-md);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.calc-transparency > summary::-webkit-details-marker { display: none; }

.calc-transparency > summary::after {
  content: '+';
  font-size: 1.25rem;
  line-height: 1;
  color: var(--color-text-muted);
  flex-shrink: 0;
}

.calc-transparency[open] > summary::after {
  content: '\2212';
}

.calc-transparency__body {
  padding: 0 var(--space-md) var(--space-md);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
  border-top: 1px solid var(--color-border);
}

.calc-transparency__body p {
  margin: var(--space-3) 0 0 0;
}

.calc-transparency__body p:first-child {
  margin-top: var(--space-sm);
}

/* ---- Content sections below calculator ---- */
.calc-content-section {
  max-width: 800px;
  margin-inline: auto;
}

/* ---- Content section typography — fight the global p/h margin:0 reset ---- */
.calc-content-section h2 {
  margin-top: 0;
  margin-bottom: 24px;
  line-height: 1.2;
}

.calc-content-section h3 {
  margin-top: 0;
  margin-bottom: 16px;
  line-height: 1.3;
}

.calc-content-section p {
  line-height: 1.72;
  margin-top: 0;
  margin-bottom: 20px;
}

.calc-content-section p:last-child {
  margin-bottom: 0;
}

/* Gap between a paragraph and the list that follows (~32px total) */
.calc-content-section p + ul,
.calc-content-section p + ol {
  margin-top: 12px;
}

/* Standard lists inside content sections — exclude .calc-factors which has its own treatment */
.calc-content-section ul:not(.calc-factors) {
  padding-left: 1.5rem;
  margin-top: 0;
  margin-bottom: 20px;
  list-style: disc;
}

.calc-content-section ol {
  padding-left: 1.5rem;
  margin-top: 0;
  margin-bottom: 20px;
  list-style: decimal;
}

/* Spacing for li in plain lists only — .calc-factors li handles its own spacing */
.calc-content-section ul:not(.calc-factors) li,
.calc-content-section ol li {
  line-height: 1.72;
  margin-bottom: 13px;
  padding-left: 0.25rem;
}

.calc-content-section ul:not(.calc-factors) li:last-child,
.calc-content-section ol li:last-child {
  margin-bottom: 0;
}

/* Factor list */
.calc-factors {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.calc-factors li {
  padding-left: 1.35rem;
  position: relative;
  font-size: var(--text-base);
  line-height: 1.72;
}

.calc-factors li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.58em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-electric-blue);
}

/* Material cost summary cards */
.calc-material-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  margin-top: var(--space-md);
}

.calc-material-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
}

.calc-material-card__name {
  font-family: var(--font-manrope);
  font-weight: 700;
  font-size: var(--text-base);
  color: var(--color-charcoal);
  margin: 0 0 10px 0;
}

.calc-material-card__range {
  font-family: var(--font-manrope);
  font-weight: 800;
  font-size: 1.3rem;
  color: var(--color-electric-blue);
  margin: 0 0 12px 0;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
  line-height: 1.2;
}

.calc-material-card__note {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin: 0;
  line-height: 1.65;
  flex: 1;
}

/* ---- FAQ accordion — details/summary with plus/minus indicator ---- */
.faq-section {
  /* section wrapper — inherits .section padding from the page */
}

.faq-list {
  max-width: 760px;
  margin-inline: auto;
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 12px;
  background: var(--color-white);
}

.faq-item:last-child {
  margin-bottom: 0;
}

/* Summary row */
.faq-item__q {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  padding: var(--space-md);
  text-align: left;
  font-family: var(--font-manrope);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-charcoal);
  background: var(--color-white);
  cursor: pointer;
  transition: background-color var(--transition-fast);
  user-select: none;
  min-height: 56px;
  line-height: 1.4;
}

/* Remove native disclosure triangle in all browsers */
.faq-item__q::-webkit-details-marker {
  display: none;
}
.faq-item__q::marker {
  content: '';
}

/* Plus / minus icon — right-aligned */
.faq-item__q::after {
  content: '+';
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--color-electric-blue);
  line-height: 1;
  flex-shrink: 0;
  width: 1.5rem;
  text-align: center;
}

.faq-item[open] > .faq-item__q::after {
  content: '\2212'; /* minus sign */
}

.faq-item__q:hover {
  background-color: var(--color-warm-cream);
}

/* Answer area */
.faq-item__a {
  padding: var(--space-md);
  border-top: 1px solid var(--color-border);
  background-color: rgba(248, 251, 255, 0.65);
  font-size: var(--text-sm);
  line-height: 1.72;
  color: var(--color-text-muted);
}

.faq-item__a p {
  margin: 0;
}

.faq-item__a p + p {
  margin-top: var(--space-3);
}

.faq-item__a a {
  color: var(--color-electric-blue);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* Ensure body shows when open (in case display:none is inherited) */
.faq-item[open] > .faq-item__a {
  display: block;
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .calc-layout {
    grid-template-columns: 1fr;
    gap: var(--space-md);
    padding-block: var(--space-lg);
  }

  .calc-results-wrap {
    position: static;
    /* On tablet: show results below form */
  }
}

@media (max-width: 768px) {
  .calc-radio-grid--4col {
    grid-template-columns: repeat(2, 1fr);
  }

  .calc-material-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .calc-form {
    padding: var(--space-sm);
  }

  .calc-radio-grid {
    grid-template-columns: 1fr;
  }

  .calc-radio-grid--3col {
    grid-template-columns: 1fr;
  }

  .calc-radio-grid--4col {
    grid-template-columns: repeat(2, 1fr);
  }

  .calc-form__actions {
    flex-direction: column;
  }

  .calc-form__actions .btn {
    width: 100%;
    justify-content: center;
  }
}