/* ========================================================================
   Calculator — wizard, progress, gate, reveal
   ======================================================================== */

.calculator {
  position: relative;
  background: var(--cream-100);
  background-image:
    radial-gradient(ellipse 800px 500px at 50% 0%, var(--cream-50), transparent 60%),
    radial-gradient(circle at 0% 100%, rgba(232, 200, 74, 0.10), transparent 50%);
  padding-block: clamp(4rem, 7vw, 7rem);
  overflow: hidden;
}

.calc-card {
  position: relative;
  max-width: 720px;
  margin: 0 auto;
  background: var(--white);
  border-radius: var(--radius-2xl);
  box-shadow:
    0 30px 80px rgba(26, 32, 44, 0.14),
    0 6px 18px rgba(26, 32, 44, 0.07);
  border: 1px solid var(--border-soft);
  overflow: hidden;
}

/* --- Calc header / progress --- */
.calc-card__head {
  padding: var(--space-6) var(--space-7) var(--space-5);
  border-bottom: 1px solid var(--border-soft);
  background: linear-gradient(180deg, rgba(250, 247, 240, 0.6), transparent);
}
.calc-card__head-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-3);
}
.calc-card__step-label {
  font-size: 0.72rem;
  font-weight: var(--weight-semibold);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold-600);
}
.calc-card__back {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  transition: color var(--t-fast) var(--ease-out);
}
.calc-card__back:hover { color: var(--green-800); }
.calc-card__back[hidden] { display: none; }
.calc-card__back svg { width: 14px; height: 14px; }

/* Progress bar — segmented */
.calc-progress {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  width: 100%;
}
.calc-progress__seg {
  flex: 1;
  height: 4px;
  border-radius: var(--radius-pill);
  background: var(--cream-200);
  position: relative;
  overflow: hidden;
}
.calc-progress__seg::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--gold-500);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t-slow) var(--ease-out);
}
.calc-progress__seg.is-complete::before { transform: scaleX(1); }
.calc-progress__seg.is-current::before { transform: scaleX(0.6); }

/* --- Calc body / steps --- */
.calc-card__body {
  padding: clamp(1.5rem, 4vw, var(--space-7)) clamp(1.5rem, 4vw, var(--space-7));
  min-height: 420px;
  position: relative;
}

.calc-step {
  display: none;
  animation: fadeUp 360ms var(--ease-out);
}
.calc-step.is-active { display: block; }

.calc-step__head {
  margin-bottom: var(--space-6);
}
.calc-step__title {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2rem);
  font-weight: var(--weight-semibold);
  color: var(--text-strong);
  line-height: 1.2;
  letter-spacing: -0.015em;
  margin-bottom: var(--space-2);
}
.calc-step__sub {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 52ch;
}

/* Step 1 — area input */
.calc-area {
  display: grid;
  gap: var(--space-5);
}
.calc-area__input-wrap {
  position: relative;
}
.calc-area__input {
  width: 100%;
  padding: 1.5rem 5.5rem 1.5rem 1.5rem;
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: var(--weight-semibold);
  text-align: left;
  background: var(--cream-50);
  border: 2px solid var(--border-soft);
  border-radius: var(--radius-lg);
  color: var(--text-strong);
  transition:
    border-color var(--t-fast) var(--ease-out),
    background var(--t-fast) var(--ease-out);
  -webkit-appearance: none;
  appearance: none;
}
.calc-area__input::-webkit-outer-spin-button,
.calc-area__input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
.calc-area__input:focus {
  outline: none;
  border-color: var(--gold-500);
  background: var(--white);
  box-shadow: var(--shadow-focus);
}
.calc-area__suffix {
  position: absolute;
  right: 1.5rem;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: var(--weight-semibold);
  color: var(--text-muted);
  pointer-events: none;
}
.calc-area__suffix sup { font-size: 0.65em; vertical-align: super; }
.calc-area__hint {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.85rem;
  color: var(--text-muted);
  background: var(--gold-50);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--gold-500);
}
.calc-area__hint svg { width: 18px; height: 18px; color: var(--gold-700); flex-shrink: 0; }
.calc-area__presets {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}
.calc-area__preset {
  padding: 0.55rem 1rem;
  background: var(--cream-50);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  color: var(--text-default);
  font-weight: var(--weight-medium);
  cursor: pointer;
  transition: all var(--t-fast) var(--ease-out);
}
.calc-area__preset:hover {
  border-color: var(--gold-500);
  background: var(--gold-50);
  color: var(--charcoal-900);
}

/* Step 2 — product grid */
.calc-products {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
}
.calc-products .choice-tile__media { aspect-ratio: 5 / 3; }

@media (max-width: 540px) {
  .calc-products { grid-template-columns: 1fr; }
}

/* Step 3 — install + edging */
.calc-install {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}
.calc-install .choice-tile { padding: var(--space-5); display: flex; flex-direction: column; gap: var(--space-3); }
.calc-install .choice-tile__title { font-size: 1.3rem; }
.calc-install .choice-tile__desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.55;
  flex-grow: 1;
}
.calc-install .choice-tile__price {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: var(--weight-semibold);
  color: var(--gold-700);
  margin-top: auto;
}
.calc-install .choice-tile__includes {
  list-style: none;
  padding: 0;
  margin: var(--space-2) 0 0;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.calc-install .choice-tile__includes li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.calc-install .choice-tile__includes li::before {
  content: "✓";
  color: var(--gold-600);
  font-weight: bold;
  flex-shrink: 0;
}

@media (max-width: 540px) {
  .calc-install { grid-template-columns: 1fr; }
}

/* Edging toggle */
.calc-edging {
  margin-top: var(--space-5);
  padding: var(--space-5);
  background: var(--cream-50);
  border-radius: var(--radius-lg);
  border: 1px dashed var(--border-medium);
}
.calc-edging__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}
.calc-edging__copy {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.calc-edging__title {
  font-weight: var(--weight-semibold);
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--text-strong);
}
.calc-edging__sub {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Toggle switch */
.toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  cursor: pointer;
  flex-shrink: 0;
}
.toggle input { position: absolute; opacity: 0; pointer-events: none; }
.toggle__track {
  width: 52px;
  height: 30px;
  background: var(--border-medium);
  border-radius: var(--radius-pill);
  position: relative;
  transition: background var(--t-fast) var(--ease-out);
}
.toggle__track::after {
  content: "";
  position: absolute;
  top: 3px; left: 3px;
  width: 24px; height: 24px;
  background: var(--white);
  border-radius: 50%;
  box-shadow: var(--shadow-2);
  transition: transform var(--t-base) var(--ease-out);
}
.toggle input:checked ~ .toggle__track { background: var(--gold-500); }
.toggle input:checked ~ .toggle__track::after { transform: translateX(22px); }
.toggle input:focus-visible ~ .toggle__track { box-shadow: var(--shadow-focus); }

/* Step 4 — gate */
.calc-gate__intro {
  background: linear-gradient(135deg, var(--gold-50), var(--cream-100));
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  margin-bottom: var(--space-5);
  display: flex;
  align-items: center;
  gap: var(--space-4);
}
.calc-gate__intro-icon {
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--gold-500);
  color: var(--charcoal-900);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.calc-gate__intro-icon svg { width: 24px; height: 24px; }
.calc-gate__intro-text {
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--text-default);
}
.calc-gate__intro-text strong { color: var(--text-strong); }

.calc-gate__form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}
.calc-gate__form .field--full { grid-column: 1 / -1; }
@media (max-width: 540px) {
  .calc-gate__form { grid-template-columns: 1fr; }
}

.calc-gate__legal {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  font-size: 0.78rem;
  color: var(--text-subtle);
  line-height: 1.55;
  margin-top: var(--space-4);
}
.calc-gate__legal svg { width: 14px; height: 14px; color: var(--gold-600); margin-top: 2px; flex-shrink: 0; }

/* Step 5 — quote reveal */
.calc-quote {
  text-align: left;
}
.calc-quote__head {
  text-align: center;
  margin-bottom: var(--space-6);
}
.calc-quote__hello {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: var(--weight-semibold);
  color: var(--text-strong);
  margin-bottom: var(--space-2);
  letter-spacing: -0.015em;
}
.calc-quote__hello em {
  color: var(--gold-600);
  font-style: italic;
}
.calc-quote__sub {
  color: var(--text-muted);
  font-size: 1rem;
}

.calc-quote__summary {
  background: var(--cream-50);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  margin-bottom: var(--space-5);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-4);
}
.calc-quote__summary-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.calc-quote__summary-item .lbl {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  font-weight: var(--weight-semibold);
}
.calc-quote__summary-item .val {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: var(--weight-semibold);
  color: var(--text-strong);
}
@media (max-width: 540px) {
  .calc-quote__summary { grid-template-columns: 1fr 1fr; }
}

.calc-quote__breakdown {
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: var(--space-5);
}
.calc-quote__row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--border-soft);
  opacity: 0;
  transform: translateY(8px);
  animation: fadeUp 400ms var(--ease-out) forwards;
}
.calc-quote__row:last-of-type { border-bottom: none; }
.calc-quote__row .lbl {
  font-size: 0.95rem;
  color: var(--text-default);
}
.calc-quote__row .lbl small {
  display: block;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 2px;
}
.calc-quote__row .amt {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: var(--weight-semibold);
  color: var(--text-strong);
  font-variant-numeric: tabular-nums;
}
.calc-quote__row--subtotal {
  background: var(--cream-50);
}
.calc-quote__row--vat {
  background: var(--cream-50);
  font-size: 0.9rem;
}
.calc-quote__row--vat .lbl, .calc-quote__row--vat .amt { color: var(--text-muted); }
.calc-quote__row--total {
  background: var(--charcoal-900);
  padding-block: var(--space-5);
}
.calc-quote__row--total .lbl {
  color: var(--cream-50);
  font-family: var(--font-display);
  font-weight: var(--weight-semibold);
  font-size: 1.5rem;
}
.calc-quote__row--total .amt {
  color: var(--gold-400);
  font-family: var(--font-display);
  font-weight: var(--weight-semibold);
  font-size: 1.6rem;
}
.calc-quote__row--total .lbl small {
  color: var(--cream-300);
  font-family: var(--font-body);
  font-weight: var(--weight-regular);
}

.calc-quote__note {
  background: var(--gold-100);
  border-left: 3px solid var(--gold-500);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  color: var(--gold-700);
  line-height: 1.55;
  margin-bottom: var(--space-5);
}
.calc-quote__note strong { color: var(--gold-700); font-weight: var(--weight-bold); }

.calc-quote__ctas {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}
@media (max-width: 540px) {
  .calc-quote__ctas { grid-template-columns: 1fr; }
}

.calc-quote__next-steps {
  background: var(--gold-50);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  border: 1px solid var(--gold-200);
}
.calc-quote__next-steps h4 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--charcoal-900);
  margin-bottom: var(--space-3);
  font-weight: var(--weight-semibold);
}
.calc-quote__next-steps ol {
  list-style: none;
  counter-reset: step;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.calc-quote__next-steps li {
  counter-increment: step;
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  font-size: 0.92rem;
  color: var(--charcoal-800);
  line-height: 1.55;
}
.calc-quote__next-steps li::before {
  content: counter(step);
  width: 24px; height: 24px;
  background: var(--gold-500);
  color: var(--charcoal-900);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: var(--weight-bold);
  flex-shrink: 0;
}

/* --- Calc footer (sticky CTA) --- */
.calc-card__foot {
  position: sticky;
  bottom: 0;
  padding: var(--space-5) var(--space-7);
  background: linear-gradient(180deg, transparent, var(--white) 30%);
  border-top: 1px solid var(--border-soft);
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: var(--space-3);
}
.calc-card__foot .btn {
  min-width: 200px;
  font-size: 1rem;
  padding: 1.1rem 1.85rem;
}
.calc-card__foot[hidden] { display: none; }

/* On the gate step (last before reveal), emphasise the CTA more */
.calc-step[data-step="gate"].is-active ~ .calc-card__foot .btn-primary,
body:has(.calc-step[data-step="gate"].is-active) .calc-card__foot .btn-primary {
  font-size: 1.05rem;
  padding: 1.2rem 2.2rem;
}

@media (max-width: 540px) {
  .calc-card__foot {
    padding: var(--space-4);
  }
  .calc-card__foot .btn { width: 100%; min-width: 0; }
}

/* --- Loading state on submit --- */
.calc-submitting {
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(2px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  border-radius: var(--radius-2xl);
  z-index: 10;
}
.calc-submitting__spinner {
  width: 48px; height: 48px;
  border: 3px solid var(--cream-200);
  border-top-color: var(--gold-500);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
.calc-submitting__msg {
  font-family: var(--font-display);
  color: var(--text-strong);
  font-weight: var(--weight-semibold);
  font-size: 1.1rem;
}
.calc-submitting__sub {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* --- Inline error --- */
.calc-error {
  background: rgba(179, 58, 58, 0.06);
  border: 1px solid rgba(179, 58, 58, 0.2);
  color: var(--danger);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.calc-error svg { width: 18px; height: 18px; flex-shrink: 0; }