/**
 * Epoxy resin calculator page
 */

.page-calculator {
  --home-display: "Playfair Display", Georgia, "Times New Roman", serif;
  --home-body: "DM Sans", system-ui, -apple-system, sans-serif;
  --home-primary: #589fdc;
  --home-primary-deep: #3a7db5;
  --home-primary-soft: rgba(88, 159, 220, 0.12);
  --home-secondary: #d6534e;
  --home-success: #2f9e62;
  --home-ink: #0f1c2e;
  --home-muted: #5f6d82;
  --home-cream: #fafbfd;
  --home-white: #ffffff;
  --home-line: rgba(15, 28, 46, 0.08);
  --home-radius: 1.125rem;
  --home-radius-lg: 1.375rem;
  --home-shadow: 0 20px 50px rgba(15, 28, 46, 0.1);
}

body.page-calculator,
body.page-calculator .calculator-page {
  font-family: var(--home-body);
  color: var(--home-ink);
  background: var(--home-cream);
}

.calculator-page {
  padding: 1.25rem 0 3.5rem;
}

/* Breadcrumb & hero */

.calculator-page__breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 0.5rem;
  margin: 0 0 1.25rem;
  padding: 0;
  list-style: none;
  font-size: 0.8125rem;
  color: var(--home-muted);
}

.calculator-page__breadcrumb li {
  display: inline-flex;
  align-items: center;
}

.calculator-page__breadcrumb li + li::before {
  content: "/";
  margin-right: 0.5rem;
  color: rgba(15, 28, 46, 0.28);
}

.calculator-page__breadcrumb a {
  color: inherit;
  text-decoration: none;
}

.calculator-page__breadcrumb a:hover {
  color: var(--home-primary-deep);
}

.calculator-page__hero {
  display: grid;
  gap: 1rem;
  margin-bottom: 1.75rem;
}

@media (min-width: 768px) {
  .calculator-page__hero {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    gap: 1.5rem;
  }
}

.calculator-page__hero-copy {
  max-width: 42rem;
}

.calculator-page__eyebrow {
  margin: 0 0 0.65rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--home-primary-deep);
}

.calculator-page__title {
  margin: 0 0 0.75rem;
  font-family: var(--home-display);
  font-size: clamp(2rem, 5vw, 2.75rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
}

.calculator-page__intro {
  margin: 0;
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--home-muted);
}

.calculator-page__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.calculator-page__badges li {
  padding: 0.4rem 0.75rem;
  border: 1px solid var(--home-line);
  border-radius: 999px;
  background: var(--home-white);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--home-muted);
  white-space: nowrap;
}

/* Main workspace */

.calculator-workspace {
  display: grid;
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}

@media (min-width: 992px) {
  .calculator-workspace {
    grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
    align-items: start;
    gap: 1.5rem;
  }

  .calculator-tool__card {
    position: sticky;
    top: 1.25rem;
  }
}

.calculator-tool__card,
.calculator-sidebar__card {
  border: 1px solid var(--home-line);
  border-radius: var(--home-radius-lg);
  background: var(--home-white);
  box-shadow: var(--home-shadow);
}

.calculator-tool__card {
  overflow: hidden;
}

.calculator-tool__header {
  padding: 1.5rem 1.5rem 0;
}

@media (min-width: 768px) {
  .calculator-tool__header {
    padding: 2rem 2rem 0;
  }
}

.calculator-tool__step-label,
.calculator-results__step-label {
  margin: 0 0 0.35rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--home-primary-deep);
}

.calculator-tool__title {
  margin: 0 0 0.5rem;
  font-family: var(--home-display);
  font-size: clamp(1.35rem, 3vw, 1.65rem);
  line-height: 1.2;
}

.calculator-tool__intro {
  margin: 0;
  line-height: 1.6;
  color: var(--home-muted);
}

.calculator-form {
  padding: 1.25rem 1.5rem 1.5rem;
}

@media (min-width: 768px) {
  .calculator-form {
    padding: 1.5rem 2rem 2rem;
  }
}

.calculator-form__section {
  margin: 0 0 1.35rem;
  padding: 0;
  border: 0;
}

.calculator-form__legend {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 0.85rem;
  padding: 0;
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--home-ink);
}

.calculator-form__step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 50%;
  background: var(--home-primary);
  font-size: 0.8125rem;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}

/* Geometry toggles */

.calculator-geometry {
  display: grid;
  gap: 0.65rem;
}

@media (min-width: 560px) {
  .calculator-geometry {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.calculator-geometry__option {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  min-height: 4.5rem;
  padding: 0.9rem 1rem;
  border: 2px solid var(--home-line);
  border-radius: var(--home-radius);
  background: var(--home-cream);
  cursor: pointer;
  transition:
    border-color 0.2s ease,
    background 0.2s ease,
    box-shadow 0.2s ease,
    transform 0.15s ease;
}

.calculator-geometry__option:hover {
  border-color: rgba(88, 159, 220, 0.45);
  transform: translateY(-1px);
}

.calculator-geometry__option.is-active {
  border-color: var(--home-primary);
  background: linear-gradient(145deg, #f5f8fc 0%, #e8f3fb 100%);
  box-shadow: 0 10px 24px rgba(88, 159, 220, 0.16);
}

.calculator-geometry__option input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.calculator-geometry__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 0.65rem;
  background: var(--home-white);
  color: var(--home-primary-deep);
  flex-shrink: 0;
}

.calculator-geometry__option.is-active .calculator-geometry__icon {
  background: var(--home-primary);
  color: #fff;
}

.calculator-geometry__text {
  display: grid;
  gap: 0.15rem;
  min-width: 0;
}

.calculator-geometry__text strong {
  font-size: 0.9375rem;
  line-height: 1.3;
}

.calculator-geometry__text small {
  font-size: 0.8125rem;
  line-height: 1.4;
  color: var(--home-muted);
}

/* Form fields */

.calculator-form__fields {
  display: grid;
  gap: 0.85rem;
}

.calculator-form__fields[hidden] {
  display: none !important;
}

.calculator-form__row {
  display: grid;
  gap: 0.85rem;
}

@media (min-width: 480px) {
  .calculator-form__row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.calculator-form__field label {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 0.875rem;
  font-weight: 600;
}

.calculator-form__field input {
  width: 100%;
  padding: 0.8rem 0.95rem;
  border: 1px solid var(--home-line);
  border-radius: 0.75rem;
  font: inherit;
  font-size: 1rem;
  color: var(--home-ink);
  background: var(--home-white);
  transition:
    border-color 0.2s ease,
    box-shadow 0.2s ease;
}

.calculator-form__field input:focus {
  outline: none;
  border-color: var(--home-primary);
  box-shadow: 0 0 0 3px rgba(88, 159, 220, 0.18);
}

.calculator-presets {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  margin-top: 0.6rem;
}

.calculator-presets__label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--home-muted);
  margin-right: 0.15rem;
}

.calculator-presets__btn {
  padding: 0.35rem 0.7rem;
  border: 1px solid var(--home-line);
  border-radius: 999px;
  background: var(--home-cream);
  font: inherit;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--home-muted);
  cursor: pointer;
  transition:
    border-color 0.2s ease,
    color 0.2s ease,
    background 0.2s ease;
}

.calculator-presets__btn:hover,
.calculator-presets__btn.is-active {
  border-color: var(--home-primary);
  color: var(--home-primary-deep);
  background: var(--home-primary-soft);
}

.calculator-form__submit {
  width: 100%;
  padding: 1rem 1.25rem;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--home-success) 0%, #268652 100%);
  font: inherit;
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  cursor: pointer;
  transition:
    transform 0.15s ease,
    box-shadow 0.2s ease;
}

.calculator-form__submit:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 24px rgba(47, 158, 98, 0.28);
}

/* Alerts & results */

.calculator-alert {
  margin: 0 1.5rem 1rem;
  padding: 0.85rem 1rem;
  border-radius: 0.75rem;
  font-size: 0.9375rem;
  line-height: 1.5;
}

.calculator-alert[hidden] {
  display: none !important;
}

@media (min-width: 768px) {
  .calculator-alert {
    margin-inline: 2rem;
  }
}

.calculator-alert--error {
  background: rgba(214, 83, 78, 0.1);
  color: #9b2f2b;
  border: 1px solid rgba(214, 83, 78, 0.25);
}

.calculator-results {
  margin: 0 1.5rem 1.5rem;
  padding-top: 0.25rem;
}

.calculator-results[hidden] {
  display: none !important;
}

@media (min-width: 768px) {
  .calculator-results {
    margin-inline: 2rem;
    margin-bottom: 2rem;
  }
}

.calculator-results__hero {
  margin-bottom: 1.25rem;
  padding: 1.25rem 1.35rem;
  border-radius: var(--home-radius);
  background: linear-gradient(135deg, var(--home-primary) 0%, var(--home-primary-deep) 100%);
  color: #fff;
  text-align: center;
}

.calculator-results__hero-label {
  margin: 0 0 0.25rem;
  font-size: 0.875rem;
  opacity: 0.92;
}

.calculator-results__hero-value {
  margin: 0;
  font-family: var(--home-display);
  font-size: clamp(2.25rem, 6vw, 3rem);
  line-height: 1;
  letter-spacing: -0.03em;
}

.calculator-results__hero-value abbr {
  font-size: 0.55em;
  text-decoration: none;
  opacity: 0.9;
}

.calculator-results__hero .calculator-results__step-label {
  color: rgba(255, 255, 255, 0.88);
}

.calculator-results__hero-sub {
  margin: 0.5rem 0 0;
  font-size: 0.875rem;
  opacity: 0.88;
}

.calculator-results__sections {
  display: grid;
  gap: 1rem;
}

@media (min-width: 640px) {
  .calculator-results__sections {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.calculator-results__section {
  padding: 1rem;
  border: 1px solid var(--home-line);
  border-radius: var(--home-radius);
  background: var(--home-cream);
}

.calculator-results__heading {
  margin: 0 0 0.65rem;
  font-size: 0.9375rem;
  font-weight: 700;
}

.calculator-results__hint {
  margin: -0.25rem 0 0.65rem;
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--home-muted);
}

.calculator-results__grid {
  display: grid;
  gap: 0;
  margin: 0;
}

.calculator-results__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.45rem 0;
  border-bottom: 1px solid var(--home-line);
}

.calculator-results__row:last-child {
  border-bottom: 0;
}

.calculator-results__row dt {
  margin: 0;
  font-size: 0.8125rem;
  color: var(--home-muted);
}

.calculator-results__row dd {
  margin: 0;
  font-size: 0.9375rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.calculator-ratio {
  display: grid;
  gap: 0.65rem;
}

.calculator-ratio__block {
  padding: 0.75rem;
  border-radius: 0.75rem;
  background: var(--home-white);
  border: 1px solid var(--home-line);
}

.calculator-ratio__label {
  margin: 0 0 0.45rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--home-primary-deep);
}

.calculator-ratio__parts {
  display: grid;
  gap: 0.35rem;
  margin: 0;
}

.calculator-ratio__parts div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
}

.calculator-ratio__parts dt {
  margin: 0;
  font-size: 0.8125rem;
  color: var(--home-muted);
}

.calculator-ratio__parts dd {
  margin: 0;
  font-size: 0.875rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.calculator-results__note {
  margin: 1rem 0 0;
  font-size: 0.8125rem;
  line-height: 1.55;
  color: var(--home-muted);
}

/* Sidebar */

.calculator-sidebar {
  display: grid;
  gap: 1rem;
}

.calculator-sidebar__card {
  padding: 1.25rem;
}

.calculator-sidebar__title {
  margin: 0 0 0.5rem;
  font-size: 1rem;
  font-weight: 700;
}

.calculator-sidebar__text {
  margin: 0 0 0.85rem;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--home-muted);
}

.calculator-thickness-table {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.45rem;
}

.calculator-thickness-table__btn {
  display: grid;
  grid-template-columns: 2.25rem 0.75rem 2.5rem;
  align-items: center;
  gap: 0.15rem;
  padding: 0.5rem 0.65rem;
  border: 1px solid var(--home-line);
  border-radius: 0.65rem;
  background: var(--home-cream);
  font: inherit;
  font-size: 0.8125rem;
  color: var(--home-ink);
  text-align: left;
  cursor: pointer;
  transition:
    border-color 0.2s ease,
    background 0.2s ease;
}

.calculator-thickness-table__btn:hover,
.calculator-thickness-table__btn.is-active {
  border-color: var(--home-primary);
  background: var(--home-primary-soft);
}

.calculator-thickness-table__btn strong {
  font-weight: 700;
}

.calculator-formula-cards {
  display: grid;
  gap: 0.65rem;
}

.calculator-formula-card {
  padding: 0.85rem;
  border-radius: 0.75rem;
  background: var(--home-cream);
  border: 1px solid var(--home-line);
}

.calculator-formula-card__label {
  margin: 0 0 0.25rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--home-primary-deep);
}

.calculator-formula-card__formula {
  margin: 0 0 0.25rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 1rem;
  font-weight: 700;
}

.calculator-formula-card__example {
  margin: 0;
  font-size: 0.8125rem;
  color: var(--home-muted);
}

.calculator-sidebar__card--cta {
  background: linear-gradient(145deg, #f5f8fc 0%, #e8f3fb 100%);
}

.calculator-sidebar__link {
  display: inline-flex;
  width: 100%;
  justify-content: center;
  padding: 0.85rem 1.15rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--home-primary) 0%, var(--home-primary-deep) 100%);
  font-weight: 700;
  color: #fff;
  text-decoration: none;
  transition:
    transform 0.15s ease,
    box-shadow 0.2s ease;
}

.calculator-sidebar__link:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 24px rgba(58, 125, 181, 0.28);
  color: #fff;
}

/* Guide section */

.calculator-guide {
  margin-bottom: 1.5rem;
}

.calculator-guide__header {
  margin-bottom: 1rem;
}

.calculator-guide__title {
  margin: 0 0 0.45rem;
  font-family: var(--home-display);
  font-size: clamp(1.5rem, 3vw, 1.85rem);
  line-height: 1.15;
}

.calculator-guide__intro {
  margin: 0;
  color: var(--home-muted);
  line-height: 1.6;
}

.calculator-guide__grid {
  display: grid;
  gap: 0.65rem;
}

.calculator-accordion {
  border: 1px solid var(--home-line);
  border-radius: var(--home-radius);
  background: var(--home-white);
  overflow: hidden;
}

.calculator-accordion summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.15rem;
  font-weight: 700;
  cursor: pointer;
  list-style: none;
}

.calculator-accordion summary::-webkit-details-marker {
  display: none;
}

.calculator-accordion summary::after {
  content: "+";
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--home-primary-deep);
  flex-shrink: 0;
}

.calculator-accordion[open] summary::after {
  content: "−";
}

.calculator-accordion__body {
  padding: 0 1.15rem 1.15rem;
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--home-muted);
}

.calculator-accordion__body p {
  margin: 0 0 0.75rem;
}

.calculator-accordion__body ul {
  margin: 0;
  padding-left: 1.15rem;
}

.calculator-accordion__body li + li {
  margin-top: 0.35rem;
}

/* Bottom cards */

.calculator-cards {
  display: grid;
  gap: 1rem;
}

@media (min-width: 768px) {
  .calculator-cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.calculator-cards__item {
  padding: 1.25rem;
  border: 1px solid var(--home-line);
  border-radius: var(--home-radius-lg);
  background: var(--home-white);
}

.calculator-cards__item h3 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 0.75rem;
  font-size: 1rem;
}

.calculator-cards__item h3::before {
  content: "";
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  flex-shrink: 0;
}

.calculator-cards__item--good h3::before {
  background: var(--home-success);
}

.calculator-cards__item--warn h3::before {
  background: var(--home-secondary);
}

.calculator-cards__item--tips h3::before {
  background: var(--home-primary);
}

.calculator-cards__item ul {
  margin: 0;
  padding-left: 1.1rem;
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--home-muted);
}

.calculator-cards__item li + li {
  margin-top: 0.35rem;
}