:root {
  color-scheme: dark;

  --color-bg: #111210;
  --color-surface: #191b18;
  --color-surface-raised: #20221f;
  --color-field: #141613;
  --color-text: #f1f2ed;
  --color-muted: #b9bdb4;
  --color-subtle: #92978e;
  --color-border: #41453f;
  --color-border-strong: #686d64;
  --support-deep-slate: #354f52;
  --support-charcoal-green: #2f3e46;
  --accent-bg: #b7b7a4;
  --accent-text: #101210;
  --accent-border: color-mix(in srgb, var(--accent-text) 35%, transparent);
  --selection-bg: Highlight;
  --selection-text: HighlightText;

  --font-sans:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-mono:
    ui-monospace, "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --font-sm: 0.875rem;
  --font-base: 1rem;
  --font-lg: clamp(1.05rem, 1.6vw, 1.2rem);
  --font-title: clamp(2.5rem, 6vw, 5rem);
  --font-result: clamp(4rem, 10vw, 8.5rem);

  --space-1: 0.375rem;
  --space-2: 0.625rem;
  --space-3: 0.875rem;
  --space-4: 1.25rem;
  --space-5: 1.75rem;
  --space-6: 2.5rem;
  --space-7: clamp(3.5rem, 7vw, 6.5rem);

  --page-width: 80rem;
  --gutter: clamp(1rem, 4vw, 3rem);
  --header-height: 4rem;
  --border: 1px solid var(--color-border);
  --border-strong: 1px solid var(--color-border-strong);
  --transition: 140ms ease;
}

[data-theme="sage"] {
  --accent-bg: #b7b7a4;
}

[data-theme="utility-green"] {
  --accent-bg: #84a98c;
}

[data-theme="blue-spruce"] {
  --accent-bg: #3f6259;
  --accent-text: #f8faf7;
}

[data-theme="charcoal"] {
  --accent-bg: #2f3e46;
  --accent-text: #f8faf7;
}

[data-theme="sand"] {
  --accent-bg: #eddcd2;
}

[data-theme="clay"] {
  --accent-bg: #cb997e;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  background: var(--color-bg);
  scroll-behavior: smooth;
}

body {
  min-width: 0;
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--font-base);
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-underline-offset: 0.2em;
}

button,
input,
select,
textarea {
  color: inherit;
  font: inherit;
}

button,
select {
  cursor: pointer;
}

h1,
h2,
h3,
p,
dl,
dd {
  margin: 0;
}

h1,
h2,
h3 {
  font-weight: 600;
  line-height: 1.05;
}

::selection {
  background: var(--selection-bg);
  color: var(--selection-text);
  text-shadow: none;
}

:focus-visible {
  outline: 3px solid var(--color-text);
  outline-offset: 3px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: var(--space-3);
  left: var(--space-3);
  z-index: 10;
  padding: var(--space-2) var(--space-4);
  background: var(--accent-bg);
  color: var(--accent-text);
  font-size: var(--font-sm);
  font-weight: 700;
  transform: translateY(-180%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: relative;
  z-index: 5;
  border-bottom: var(--border);
  background: var(--color-bg);
}

.site-header__inner,
.site-footer__inner {
  width: min(100% - (2 * var(--gutter)), var(--page-width));
  margin-inline: auto;
}

.site-header__inner {
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
}

.site-brand {
  min-width: 2.75rem;
  min-height: 2.75rem;
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--font-sm);
  font-weight: 700;
  text-decoration: none;
}

.site-brand__mark {
  display: grid;
  width: 1.875rem;
  height: 1.875rem;
  place-items: center;
  border: 1px solid var(--accent-bg);
  background: var(--accent-bg);
  color: var(--accent-text);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.theme-picker {
  position: relative;
}

.theme-picker__toggle {
  min-height: 2.75rem;
  padding: 0 0.75rem 0 0.6rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border: 1px solid transparent;
  border-radius: 999px;
  background: transparent;
  color: var(--color-muted);
  font-size: var(--font-sm);
}

.theme-picker__toggle:hover,
.theme-picker__toggle[aria-expanded="true"] {
  border-color: color-mix(in srgb, currentColor 30%, transparent);
  color: var(--color-text);
}

.theme-picker__swatch {
  width: 1rem;
  height: 1rem;
  flex: none;
  border-radius: 50%;
  background: var(--accent-bg);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--color-text) 35%, transparent);
}

.theme-picker__panel {
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  z-index: 20;
  width: 13rem;
  padding: 0.375rem;
  display: grid;
  border: var(--border);
  border-radius: 0.75rem;
  background: var(--color-surface-raised);
  color: var(--color-text);
  box-shadow: 0 12px 32px rgb(0 0 0 / 0.45);
}

.theme-picker__option {
  min-height: 2.5rem;
  padding: 0 0.625rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  border: 0;
  border-radius: 0.5rem;
  background: transparent;
  color: var(--color-muted);
  font-size: var(--font-sm);
  text-align: left;
}

.theme-picker__option:hover {
  background: color-mix(in srgb, var(--color-text) 7%, transparent);
  color: var(--color-text);
}

.theme-picker__option[aria-pressed="true"] {
  color: var(--color-text);
  font-weight: 650;
}

.theme-picker__option[aria-pressed="true"] .theme-picker__swatch {
  box-shadow:
    0 0 0 2px var(--color-surface-raised),
    0 0 0 4px var(--color-text);
}

.theme-picker__option .theme-picker__swatch {
  width: 1.25rem;
  height: 1.25rem;
}

.theme-picker__option:focus-visible {
  outline-offset: -2px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  font-size: var(--font-sm);
}

.site-nav a {
  min-height: 2.75rem;
  display: inline-flex;
  align-items: center;
  border-bottom: 1px solid transparent;
  color: var(--color-muted);
  text-decoration: none;
}

.site-nav a:hover {
  border-bottom-color: var(--color-border-strong);
  color: var(--color-text);
}

.site-nav a[aria-current="page"] {
  border-bottom-color: var(--accent-bg);
  color: var(--color-text);
}

.site-footer {
  border-top: var(--border);
  color: var(--color-subtle);
  font-size: var(--font-sm);
}

.site-footer__inner {
  min-height: 7rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.site-footer__links a {
  padding-block: 0.6875rem;
}

.breadcrumbs {
  width: min(100% - (2 * var(--gutter)), var(--page-width));
  margin-inline: auto;
  padding-block: var(--space-5);
  font-size: var(--font-sm);
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-3);
  margin: 0;
  padding: 0;
  list-style: none;
}

.breadcrumbs li {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
}

/* Give small text links a 44px tap height without changing the layout. */
.breadcrumbs a,
.home-section-header a {
  display: inline-block;
  padding-block: 0.6875rem;
  margin-block: -0.6875rem;
}

.breadcrumbs [aria-current] {
  opacity: 0.8;
}

.trust-page {
  width: min(100% - (2 * var(--gutter)), 68ch);
  margin-inline: auto;
  padding-block: var(--space-7);
}

.trust-page .directory-page__header {
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-5);
  border-bottom: var(--border-strong);
}

.trust-page .directory-page__header h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  letter-spacing: -0.02em;
}

.trust-page__content {
  color: var(--color-muted);
  overflow-wrap: anywhere;
}

.trust-page__content section + section {
  margin-top: var(--space-6);
  padding-top: var(--space-6);
  border-top: var(--border);
}

.trust-page__content h2 {
  color: var(--color-text);
  font-size: clamp(1.5rem, 3vw, 2rem);
  line-height: 1.3;
}

.trust-page__content p,
.trust-page__content li {
  margin-top: var(--space-3);
}

.contact-form {
  display: grid;
  gap: var(--space-5);
}

.contact-form .button {
  justify-self: start;
}

.contact-form__trap {
  display: none;
}

.contact-form__privacy {
  color: var(--color-muted);
  font-size: var(--font-sm);
}

.contact-form :user-invalid {
  border-color: #ffb9ae;
}

/* Softer fields for the contact page. Calculator fields keep their
   square, high-contrast style. */
.contact-form .field-group label {
  font-weight: 600;
}

.contact-form .field-group input,
.contact-form .field-group select,
.contact-form .field-group textarea {
  border: 1px solid var(--color-border);
  border-radius: 0.625rem;
  background-color: var(--color-surface);
  transition:
    border-color var(--transition),
    box-shadow var(--transition);
}

.contact-form .field-group input:hover,
.contact-form .field-group select:hover,
.contact-form .field-group textarea:hover {
  border-color: var(--color-border-strong);
}

.contact-form .field-group input:focus-visible,
.contact-form .field-group select:focus-visible,
.contact-form .field-group textarea:focus-visible {
  border-color: var(--color-text);
  outline: none;
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent-bg) 50%, transparent);
}

.contact-form .button {
  border-radius: 0.625rem;
  letter-spacing: 0;
  text-transform: none;
  font-size: var(--font-base);
  font-weight: 650;
}

.field-optional {
  color: var(--color-subtle);
  font-weight: 400;
}

.page-accent {
  background: var(--accent-bg);
  color: var(--accent-text);
}

.page-accent .site-header,
.page-accent .site-footer {
  border-color: var(--accent-border);
  background: var(--accent-bg);
  color: var(--accent-text);
}

.page-accent .site-brand,
.page-accent .site-nav a,
.page-accent .site-footer {
  color: var(--accent-text);
}

.page-accent .site-brand__mark {
  border-color: var(--accent-text);
  background: transparent;
  color: var(--accent-text);
}

.page-accent .theme-picker__toggle {
  color: var(--accent-text);
}

.page-accent .theme-picker__toggle:hover,
.page-accent .theme-picker__toggle[aria-expanded="true"] {
  color: var(--accent-text);
}

.page-accent .theme-picker__toggle .theme-picker__swatch {
  box-shadow: 0 0 0 1px var(--accent-text);
}

/* The open panel keeps the dark surface on every page. */
.page-accent .theme-picker__panel :focus-visible {
  outline-color: var(--color-text);
}

.page-accent .site-nav a:hover,
.page-accent .site-nav a[aria-current="page"] {
  border-bottom-color: var(--accent-text);
  color: var(--accent-text);
}

.directory-page {
  width: min(100% - (2 * var(--gutter)), var(--page-width));
  min-height: calc(100dvh - var(--header-height));
  margin-inline: auto;
  padding-block: var(--space-7);
}

.directory-page__header {
  margin-bottom: clamp(2.5rem, 6vw, 5rem);
}

.directory-page__header h1 {
  font-size: var(--font-title);
}

.directory-page__header p {
  margin-top: var(--space-3);
  color: var(--color-muted);
  font-size: var(--font-lg);
}

/* Homepage */

.hero {
  width: min(100% - (2 * var(--gutter)), var(--page-width));
  margin-inline: auto;
  padding-block: clamp(3rem, 8vw, 6.5rem) clamp(3rem, 7vw, 5.5rem);
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  align-items: center;
  gap: clamp(2.5rem, 6vw, 6rem);
}

.hero__copy h1 {
  max-width: 14ch;
  font-size: clamp(2.6rem, 5.6vw, 5rem);
  font-weight: 650;
  letter-spacing: -0.025em;
  line-height: 1.02;
  text-wrap: balance;
}

.hero__lead {
  max-width: 34rem;
  margin-top: var(--space-5);
  color: var(--color-muted);
  font-size: var(--font-lg);
  line-height: 1.55;
}

.hero__actions {
  margin-top: var(--space-6);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3) var(--space-5);
}

.hero-examples {
  min-width: 0;
}

.hero-examples__picker {
  display: flex;
  flex-wrap: wrap;
  gap: 1px;
  margin-bottom: 1px;
}

.hero-examples__picker button {
  flex: 1 1 auto;
  min-height: 2.75rem;
  white-space: nowrap;
  padding: 0.5rem 0.75rem;
  border: 0;
  border-radius: 0;
  background: var(--color-surface);
  color: var(--color-muted);
  font-size: var(--font-sm);
  font-weight: 600;
  transition:
    background-color var(--transition),
    color var(--transition);
}

.hero-examples__picker button:hover {
  background: var(--color-surface-raised);
  color: var(--color-text);
}

.hero-examples__picker button[aria-pressed="true"] {
  background: var(--accent-bg);
  color: var(--accent-text);
}

.hero-examples__picker button:focus-visible {
  position: relative;
  z-index: 1;
  outline-offset: -3px;
}

.hero-examples__picker button[aria-pressed="true"]:focus-visible {
  outline-color: var(--accent-text);
}

/* Every example shares one grid cell, so the panel keeps the height of the
   tallest example and the page doesn't jump when switching. */
.hero-examples__stack {
  display: grid;
}

.hero-slip {
  grid-area: 1 / 1;
  margin: 0;
  padding: clamp(1.5rem, 3vw, 2.25rem);
  display: flex;
  flex-direction: column;
  background: var(--accent-bg);
  color: var(--accent-text);
  box-shadow: 0 0 0 1px var(--accent-border) inset;
}

.hero-slip:not(.is-active) {
  visibility: hidden;
}

.hero-slip :focus-visible {
  outline-color: var(--accent-text);
}

.hero-slip__caption {
  font-size: var(--font-sm);
  font-weight: 700;
}

.hero-slip__lines {
  margin-top: var(--space-4);
  border-top: 1px solid color-mix(in srgb, var(--accent-text) 28%, transparent);
}

.hero-slip__lines > div {
  padding-block: 0.7rem;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-4);
  border-bottom: 1px solid color-mix(in srgb, var(--accent-text) 22%, transparent);
  font-size: var(--font-sm);
}

.hero-slip__lines dd {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  text-align: right;
}

.hero-slip__total {
  margin-top: var(--space-5);
  display: grid;
  gap: var(--space-1);
}

.hero-slip__total span {
  font-size: var(--font-sm);
  font-weight: 700;
}

.hero-slip__total strong {
  font-size: clamp(3rem, 6vw, 4.75rem);
  font-weight: 600;
  font-variant-numeric: lining-nums tabular-nums;
  letter-spacing: -0.02em;
  line-height: 1;
}

.hero-slip__link {
  min-height: 2.75rem;
  margin-top: auto;
  padding-top: var(--space-4);
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  font-size: var(--font-sm);
  font-weight: 700;
}

/* Lines settle in quickly one after another, and the total fades in while
   the last line is still arriving so the sequence reads as one motion. */
@media (prefers-reduced-motion: no-preference) {
  .hero-slip.is-active .hero-slip__lines > div {
    animation: slip-line 360ms cubic-bezier(0.25, 1, 0.5, 1) both;
  }

  .hero-slip.is-active .hero-slip__total {
    animation: slip-total 520ms cubic-bezier(0.25, 1, 0.5, 1) 200ms both;
  }

  .hero-slip.is-active .hero-slip__lines > div:nth-child(2) { animation-delay: 45ms; }
  .hero-slip.is-active .hero-slip__lines > div:nth-child(3) { animation-delay: 90ms; }
  .hero-slip.is-active .hero-slip__lines > div:nth-child(4) { animation-delay: 135ms; }
  .hero-slip.is-active .hero-slip__lines > div:nth-child(n + 5) { animation-delay: 180ms; }
}

@keyframes slip-line {
  from {
    opacity: 0;
    transform: translateY(0.25rem);
  }
}

@keyframes slip-total {
  from {
    opacity: 0;
  }
}

.home-calculators {
  width: min(100% - (2 * var(--gutter)), var(--page-width));
  margin-inline: auto;
  padding-block: var(--space-6) var(--space-7);
}

.home-section-header {
  margin-bottom: var(--space-4);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.home-section-header h2 {
  font-size: clamp(1.5rem, 2.6vw, 2rem);
}

.home-section-header a {
  color: var(--color-muted);
  font-size: var(--font-sm);
  font-weight: 600;
}

.home-section-header a:hover {
  color: var(--color-text);
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--color-border);
  background: var(--color-border);
}

.tool-grid .tool-card {
  min-height: 11rem;
  padding: var(--space-5);
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: 1fr auto;
  border: 0;
  background: var(--color-surface);
  transition: background-color var(--transition);
}

/* With an odd number of calculators, the last one spans the full row
   instead of leaving an empty cell. */
.tool-grid .tool-card:last-child:nth-child(odd) {
  grid-column: 1 / -1;
}

.tool-grid .tool-card:hover,
.tool-grid .tool-card:focus-within {
  background: var(--color-surface-raised);
}

.tool-grid .tool-card__content h2 {
  font-size: clamp(1.25rem, 2vw, 1.5rem);
  line-height: 1.2;
}

.tool-grid .tool-card__link {
  justify-self: start;
  border-bottom: 1px solid var(--color-border-strong);
}

.tool-grid .tool-card:hover .tool-card__link,
.tool-grid .tool-card:focus-within .tool-card__link {
  border-bottom-color: var(--accent-bg);
  color: var(--color-text);
}

.home-principles {
  width: min(100% - (2 * var(--gutter)), var(--page-width));
  margin-inline: auto;
  padding-block: var(--space-6) var(--space-7);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-6);
  border-top: var(--border);
}

.home-principles h2 {
  font-size: var(--font-lg);
  line-height: 1.3;
}

.home-principles p {
  max-width: 34ch;
  margin-top: var(--space-2);
  color: var(--color-muted);
  font-size: var(--font-sm);
}

.calculator-index {
  border-top: var(--border-strong);
}

.tool-card {
  position: relative;
  min-height: 9rem;
  padding-block: var(--space-5);
  display: grid;
  grid-template-columns: 3.5rem minmax(0, 1fr) auto;
  align-items: start;
  gap: var(--space-5);
  border-bottom: var(--border);
}

.tool-card--plain {
  grid-template-columns: minmax(0, 1fr) auto;
}

.tool-card__content {
  min-width: 0;
}

.tool-card__content h2 {
  font-size: clamp(1.5rem, 3vw, 2.4rem);
}

.tool-card__content h2 a {
  text-decoration: none;
}

.tool-card__content h2 a::after {
  position: absolute;
  inset: 0;
  content: "";
}

.tool-card__content p {
  max-width: 42rem;
  margin-top: var(--space-3);
  color: var(--color-muted);
}

.tool-card__link {
  position: relative;
  z-index: 1;
  color: var(--color-muted);
  font-size: var(--font-sm);
  text-decoration: none;
  pointer-events: none;
}

.page-accent .directory-page__header p,
.page-accent .tool-card__content p,
.page-accent .tool-card__link {
  color: var(--accent-text);
}

.page-accent .calculator-index,
.page-accent .tool-card {
  border-color: var(--accent-border);
}

.page-accent .tool-card {
  padding: var(--space-5);
  box-shadow: inset 4px 0 0 transparent;
  transition:
    background-color var(--transition),
    box-shadow var(--transition);
}

.page-accent .tool-card:hover,
.page-accent .tool-card:focus-within {
  background: color-mix(in srgb, var(--accent-text) 7%, transparent);
  box-shadow: inset 4px 0 0 var(--accent-text);
}

.page-accent .tool-card:hover h2,
.page-accent .tool-card:focus-within h2,
.page-accent .tool-card:hover .tool-card__link,
.page-accent .tool-card:focus-within .tool-card__link {
  color: var(--accent-text);
}

.family-callout {
  margin-top: var(--space-6);
  padding: var(--space-4) var(--space-5);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3) var(--space-5);
  flex-wrap: wrap;
  border: 1px solid var(--accent-border);
  font-size: var(--font-sm);
}

.family-callout a {
  min-height: 2.75rem;
  display: inline-flex;
  align-items: center;
  font-weight: 700;
}

.message-page {
  width: min(100% - (2 * var(--gutter)), 44rem);
  min-height: calc(100dvh - var(--header-height) - 7rem);
  margin-inline: auto;
  padding-block: var(--space-7);
}

.message-page h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  letter-spacing: -0.02em;
}

.message-page > p {
  max-width: 40ch;
  margin-top: var(--space-4);
  color: var(--color-muted);
  font-size: var(--font-lg);
}

.message-page__actions {
  margin-top: var(--space-6);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.message-page__links {
  margin-top: var(--space-7);
  padding-top: var(--space-5);
  border-top: var(--border);
}

.message-page__links h2 {
  color: var(--color-muted);
  font-size: var(--font-sm);
}

.message-page__links ul {
  margin: var(--space-3) 0 0;
  padding: 0;
  list-style: none;
}

.message-page__links a {
  min-height: 2.75rem;
  display: inline-flex;
  align-items: center;
}

.calculator {
  min-height: calc(100dvh - var(--header-height));
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  grid-template-rows: auto 1fr;
  background: var(--color-surface);
}

.calculator__masthead {
  grid-column: 1;
  grid-row: 1;
  padding: clamp(2rem, 4vw, 4.5rem) clamp(2rem, 4vw, 4.5rem) 0;
  background: var(--color-surface);
}

.calculator__masthead h1 {
  max-width: 16ch;
  font-size: clamp(2rem, 4vw, 3.6rem);
}

.calculator__input-panel {
  grid-column: 1;
  grid-row: 2;
  min-width: 0;
  padding: var(--space-6) clamp(2rem, 4vw, 4.5rem) clamp(2rem, 4vw, 4.5rem);
  background: var(--color-surface);
}

.calculator-form {
  max-width: 42rem;
  padding-top: var(--space-5);
}

.calculator-form--proration {
  max-width: 48rem;
}

.calculator-form > .field-group + .field-group,
.calculator-form > .field-group + .field-row,
.calculator-form > .field-row + .field-group,
.calculator-form > .field-row + .field-row,
.calculator-form > .field-row + .proration-method,
.calculator-form > .proration-method + .field-row {
  margin-top: var(--space-4);
}

.field-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
}

.field-group {
  min-width: 0;
}

.proration-method {
  margin: 0;
  padding: 0;
  border: 0;
}

.field-group label,
.proration-method legend {
  display: block;
  padding: 0;
  margin-bottom: var(--space-2);
  font-size: var(--font-sm);
  font-weight: 700;
}

.field-group input,
.field-group select,
.field-group textarea,
.input-affix {
  width: 100%;
  min-height: 3.125rem;
  border: var(--border-strong);
  border-radius: 0;
  background: var(--color-field);
}

.field-group input,
.field-group select,
.field-group textarea {
  padding: 0.75rem 0.875rem;
}

.field-group textarea {
  display: block;
  min-height: 10rem;
  line-height: 1.5;
  resize: vertical;
}

.field-group select {
  appearance: none;
  padding-right: 3rem;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8' fill='none'%3E%3Cpath d='m1 1.5 5 5 5-5' stroke='%239da198' stroke-width='1.5' stroke-linecap='square'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1.125rem center;
  background-size: 0.75rem 0.5rem;
}

.field-group input::placeholder {
  color: #9a9f96;
  opacity: 1;
}

.field-group input:hover,
.field-group select:hover,
.field-group textarea:hover,
.input-affix:hover {
  border-color: var(--color-muted);
}

.input-affix {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
}

.input-affix--suffix {
  grid-template-columns: minmax(0, 1fr) auto;
}

.input-affix span {
  padding-inline: 0.875rem 0;
  color: var(--color-muted);
  font-family: var(--font-mono);
}

.input-affix--suffix span {
  padding-inline: 0 0.875rem;
}

.input-affix input {
  min-width: 0;
  border: 0;
  background: transparent;
}

.input-affix:focus-within {
  border-color: var(--accent-bg);
  outline: 3px solid var(--color-text);
  outline-offset: 3px;
}

.input-affix input:focus-visible {
  outline: 0;
}

.field-help {
  margin-top: var(--space-2);
  color: var(--color-subtle);
  font-size: var(--font-sm);
  line-height: 1.45;
}

.field-error {
  min-height: 1.25rem;
  margin-top: var(--space-1);
  color: #ffb9ae;
  font-size: var(--font-sm);
  font-weight: 650;
  line-height: 1.4;
}

.field-group--invalid .input-affix,
.field-group--invalid input,
.field-group--invalid select {
  border-color: #ffb9ae;
}

.segmented-control {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border: var(--border-strong);
  background: var(--color-field);
}

.segmented-control label {
  position: relative;
  margin: 0;
  cursor: pointer;
}

.segmented-control label + label {
  border-left: var(--border-strong);
}

.segmented-control input {
  position: absolute;
  width: 1px;
  min-height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.segmented-control span {
  min-height: 3.125rem;
  padding: 0.75rem 0.875rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-muted);
  text-align: center;
}

.segmented-control input:checked + span {
  box-shadow: inset 0 0 0 2px var(--accent-text);
  background: var(--accent-bg);
  color: var(--accent-text);
}

.segmented-control input:focus-visible + span {
  position: relative;
  z-index: 1;
  outline: 3px solid var(--color-text);
  outline-offset: 3px;
}

.field-group--invalid .segmented-control {
  border-color: #ffb9ae;
}

.form-actions {
  margin-top: var(--space-5);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
}

.button {
  min-height: 3rem;
  padding: 0.75rem 1.15rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 0;
  font-size: var(--font-sm);
  font-weight: 750;
  letter-spacing: 0.06em;
  line-height: 1;
  text-decoration: none;
  text-transform: uppercase;
  white-space: nowrap;
  transition:
    background-color var(--transition),
    color var(--transition),
    transform var(--transition);
}

.button:hover {
  transform: translateY(-1px);
}

.button:active {
  transform: translateY(1px);
}

.button--primary {
  border: 1px solid var(--accent-bg);
  background: var(--accent-bg);
  color: var(--accent-text);
}

.button--primary:hover {
  background: color-mix(in srgb, var(--accent-bg) 88%, var(--accent-text));
}

.button--secondary {
  border: var(--border-strong);
  background: transparent;
  color: var(--color-text);
}

.button--secondary:hover {
  border-color: var(--color-text);
  background: var(--color-surface-raised);
}

.form-status {
  min-height: 1.5rem;
  margin-top: var(--space-3);
  color: var(--color-muted);
  font-size: var(--font-sm);
}

.form-status[data-state="error"] {
  color: #ffb9ae;
}

.form-status[data-state="success"] {
  color: var(--color-text);
}

.calculator__output-column {
  grid-column: 2;
  grid-row: 1 / span 2;
  min-width: 0;
  min-height: calc(100dvh - var(--header-height));
  border-left: var(--border);
}

.result-panel {
  min-height: calc(100dvh - var(--header-height));
  height: 100%;
  padding: clamp(2rem, 4vw, 4.5rem);
  display: grid;
  grid-template-rows: auto minmax(12rem, 1fr) auto auto;
  background: var(--accent-bg);
  color: var(--accent-text);
}

.result-panel--renewal,
.result-panel--rent-comparison {
  grid-template-rows: auto auto auto;
  align-content: start;
}

.result-panel__hero {
  place-self: center;
  display: grid;
  justify-items: center;
  gap: var(--space-2);
}

.result-panel--renewal .result-panel__hero,
.result-panel--rent-comparison .result-panel__hero {
  width: 100%;
  min-width: 0;
  padding: 0 0 var(--space-6);
  place-self: start center;
}

.result-panel--renewal .result-panel__value,
.result-panel--rent-comparison .result-panel__value {
  max-width: 100%;
  font-size: clamp(3.75rem, 6.5vw, 6.75rem);
  overflow-wrap: anywhere;
}

.result-panel__hero > span {
  font-size: var(--font-sm);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.result-panel :focus-visible {
  outline-color: var(--accent-text);
}

.result-panel__value {
  place-self: center;
  display: block;
  font-family: var(--font-sans);
  font-size: var(--font-result);
  font-feature-settings:
    "lnum" 1,
    "tnum" 1,
    "zero" 0;
  font-variant-numeric: lining-nums tabular-nums;
  font-weight: 600;
  line-height: 1;
}

.result-summary {
  padding-top: 0;
}

.result-summary dl {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  padding: 1px;
  background: color-mix(in srgb, var(--accent-text) 28%, transparent);
}

.result-summary dl > div {
  min-width: 0;
  min-height: 5.25rem;
  padding: var(--space-3);
  display: grid;
  align-content: space-between;
  gap: var(--space-1);
  background: var(--accent-bg);
  font-size: var(--font-sm);
}

.result-summary dl > .result-summary__item--wide {
  min-height: 5.25rem;
  grid-column: auto;
  grid-template-columns: minmax(0, 1fr);
  align-content: space-between;
  align-items: initial;
}

.result-summary dt {
  color: color-mix(in srgb, var(--accent-text) 90%, transparent);
}

.result-summary dd {
  text-align: left;
  font-family: var(--font-mono);
  font-size: var(--font-sm);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.result-panel--rent-comparison .formula-panel__calculation {
  white-space: pre-line;
}

.rent-comparison-copy-actions {
  margin-top: var(--space-4);
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: var(--space-3);
}

.rent-comparison-copy-actions .button--result {
  margin: 0;
}

.button--result {
  width: fit-content;
  min-height: 2.75rem;
  margin-top: var(--space-4);
  margin-left: auto;
  padding: 0.45rem 0.65rem;
  display: flex;
  border: 1px solid var(--accent-text);
  background: transparent;
  color: var(--accent-text);
  font-size: 0.875rem;
}

.button--result:hover {
  background: var(--accent-text);
  color: var(--accent-bg);
}

.button--result:disabled {
  cursor: not-allowed;
  opacity: 0.5;
  transform: none;
}

.formula-panel {
  margin-top: var(--space-7);
  padding-top: var(--space-5);
  border-top: 1px solid var(--accent-border);
}

.formula-panel__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.formula-panel h2,
.formula-panel h3 {
  font-size: var(--font-base);
}

.formula-panel dl {
  margin-top: var(--space-4);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  border: 1px solid color-mix(in srgb, var(--accent-text) 28%, transparent);
}

.formula-panel dl > div {
  min-width: 0;
  display: grid;
  grid-template-columns: minmax(7.5rem, 0.35fr) minmax(0, 1fr);
  align-items: baseline;
  gap: var(--space-4);
  padding: 0.7rem var(--space-3);
  font-size: var(--font-sm);
}

.formula-panel dl > div + div {
  border-top: 1px solid color-mix(in srgb, var(--accent-text) 22%, transparent);
}

.formula-panel dt {
  color: color-mix(in srgb, var(--accent-text) 90%, transparent);
  font-family: var(--font-sans);
  font-weight: 400;
}

.formula-panel dd {
  min-width: 0;
  text-align: right;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-variant-numeric: tabular-nums;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.formula-panel__calculation {
  margin-top: var(--space-4);
  padding: var(--space-3);
  border: 1px solid color-mix(in srgb, var(--accent-text) 28%, transparent);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-variant-numeric: tabular-nums;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.formula-panel__note {
  margin-top: var(--space-2);
  color: color-mix(in srgb, var(--accent-text) 90%, transparent);
  font-size: var(--font-sm);
  line-height: 1.5;
}

.button--formula {
  min-height: 2.75rem;
  padding: 0.45rem 0.65rem;
  border: 1px solid var(--accent-text);
  background: transparent;
  color: var(--accent-text);
  font-size: 0.875rem;
}

.button--formula:hover {
  background: var(--accent-text);
  color: var(--accent-bg);
}

.button--formula:disabled {
  cursor: not-allowed;
  opacity: 0.5;
  transform: none;
}

.result-panel--proration {
  grid-template-rows: auto auto auto;
  align-content: start;
}

.result-panel--proration .result-panel__hero {
  width: 100%;
  min-width: 0;
  padding-bottom: var(--space-6);
  place-self: start center;
}

.result-panel--proration .result-panel__value {
  max-width: 100%;
  font-size: clamp(3.5rem, 6.25vw, 6.5rem);
  overflow-wrap: anywhere;
}

.proration-outcome-notice {
  width: min(100%, 39rem);
  margin-inline: auto;
  padding: var(--space-4);
  border: 1px solid color-mix(in srgb, var(--accent-text) 48%, transparent);
  border-left-width: 0.35rem;
  background: color-mix(in srgb, var(--accent-text) 8%, transparent);
  font-size: var(--font-sm);
  line-height: 1.55;
}

.proration-outcome-notice p {
  margin: 0;
}

.proration-outcome-notice p + p {
  margin-top: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px solid color-mix(in srgb, var(--accent-text) 22%, transparent);
}

.proration-breakdown {
  width: min(100%, 39rem);
  min-width: 0;
  margin-top: var(--space-6);
  margin-inline: auto;
  padding-top: var(--space-5);
  border-top: 1px solid var(--accent-border);
}

.proration-breakdown h2 {
  font-size: var(--font-base);
}

.proration-summary {
  margin-top: var(--space-4);
  border: 1px solid color-mix(in srgb, var(--accent-text) 28%, transparent);
}

.proration-summary dl {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-variant-numeric: tabular-nums;
  line-height: 1.4;
}

.proration-summary dl > div {
  display: grid;
  grid-template-columns: minmax(8rem, 42%) minmax(0, 1fr);
  gap: var(--space-3);
  padding: 0.8rem 0.75rem;
  border-bottom: 1px solid
    color-mix(in srgb, var(--accent-text) 22%, transparent);
}

.proration-summary dl > div:last-child {
  border-bottom: 0;
}

.proration-summary dt {
  font-family: var(--font-sans);
  font-weight: 600;
}

.proration-summary dd {
  margin: 0;
  overflow-wrap: anywhere;
  text-align: left;
}

.segment-table-wrap {
  width: 100%;
  margin-top: var(--space-3);
  overflow-x: auto;
  border: 1px solid color-mix(in srgb, var(--accent-text) 28%, transparent);
}

.segment-table {
  width: 100%;
  table-layout: fixed;
  border-collapse: collapse;
  color: inherit;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-variant-numeric: tabular-nums;
  line-height: 1.4;
}

.segment-table th,
.segment-table td {
  padding: 0.8rem 0.75rem;
  border-bottom: 1px solid
    color-mix(in srgb, var(--accent-text) 22%, transparent);
  text-align: right;
}

.segment-table--rent-change th:first-child {
  width: 30%;
  text-align: left;
}

.segment-table--rent-change th:nth-child(2),
.segment-table--rent-change th:nth-child(3) {
  width: 35%;
}

.segment-table--move-in th:first-child,
.segment-table--move-out th:first-child {
  width: 42%;
  text-align: left;
}

.segment-table--move-in th:nth-child(2),
.segment-table--move-out th:nth-child(2) {
  width: 58%;
}

.segment-table thead th {
  color: color-mix(in srgb, var(--accent-text) 90%, transparent);
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  line-height: 1.25;
  text-transform: uppercase;
  overflow-wrap: anywhere;
}

.segment-table tbody th {
  font-family: var(--font-sans);
  font-weight: 600;
}

.segment-table tbody td,
.segment-table tfoot td {
  overflow-wrap: anywhere;
}

.proration-method-description {
  margin: var(--space-3) 0 0;
  color: color-mix(in srgb, var(--accent-text) 90%, transparent);
  font-size: var(--font-sm);
  line-height: 1.5;
}

.calculator-disclaimer {
  width: min(100% - (2 * var(--gutter)), var(--page-width));
  margin-inline: auto;
  padding-block: var(--space-5);
  color: var(--color-subtle);
  font-size: var(--font-sm);
  line-height: 1.5;
}

.calculator-disclaimer strong {
  color: var(--color-muted);
}

.calculator-guide {
  width: min(100% - (2 * var(--gutter)), 68ch);
  margin-inline: auto;
  padding-block: var(--space-6) var(--space-7);
  color: var(--color-muted);
  overflow-wrap: anywhere;
}

.calculator-guide > section + section {
  margin-top: var(--space-6);
  padding-top: var(--space-6);
  border-top: var(--border);
}

.calculator-guide h2,
.calculator-guide h3 {
  color: var(--color-text);
  line-height: 1.3;
}

.calculator-guide h2 {
  margin-bottom: var(--space-4);
  font-size: clamp(1.5rem, 3vw, 2rem);
}

.calculator-guide h3 {
  margin-top: var(--space-5);
  font-size: var(--font-lg);
}

.calculator-guide p,
.calculator-guide ul {
  margin-top: var(--space-3);
}

.calculator-guide ul {
  margin-bottom: 0;
  padding-left: var(--space-4);
}

.calculator-guide li + li {
  margin-top: var(--space-2);
}

.calculator-guide__example {
  margin-top: var(--space-5);
  padding: var(--space-4);
  background: var(--color-surface);
  font-variant-numeric: tabular-nums;
}

.calculator-guide__example h3 {
  margin-top: 0;
}

@media (max-width: 68rem) {
  .calculator__masthead {
    padding: var(--space-6) var(--space-6) 0;
  }

  .calculator__input-panel,
  .result-panel {
    padding: var(--space-6);
  }

  .field-row {
    grid-template-columns: 1fr;
  }

  .calculator-form--proration .field-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 60rem) {
  .hero {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-slip {
    max-width: 34rem;
  }

  .home-principles {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-5);
  }

  .calculator {
    min-height: 0;
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto;
  }

  .calculator__masthead {
    grid-column: 1;
    grid-row: 1;
    min-height: 0;
    padding: var(--space-6);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    border-bottom: 1px solid var(--accent-border);
    background: var(--accent-bg);
    color: var(--accent-text);
  }

  .calculator__masthead :focus-visible {
    outline-color: var(--accent-text);
  }

  .calculator__masthead h1 {
    font-size: clamp(3rem, 8vw, 4.5rem);
  }

  .calculator__input-panel {
    grid-column: 1;
    grid-row: 2;
    min-height: 0;
    padding: var(--space-6);
  }

  .calculator__output-column {
    grid-column: 1;
    grid-row: 3;
    min-height: 0;
    border-top: var(--border);
    border-left: 0;
  }

  .result-panel {
    min-height: 0;
    height: auto;
  }

  .field-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 40rem) {
  :root {
    --gutter: 1rem;
  }

  .site-brand > span:last-child {
    display: none;
  }

  .site-header__inner {
    gap: var(--space-2);
  }

  .site-header__actions {
    gap: var(--space-2);
  }

  .site-nav {
    font-size: var(--font-sm);
  }

  /* Anchor the color menu to the header's right edge so it can't open past
     the left side of narrow screens. */
  .site-header__inner {
    position: relative;
  }

  .theme-picker {
    position: static;
  }

  .theme-picker__panel {
    top: calc(100% - 0.25rem);
    max-width: 100%;
  }

  .site-footer__inner {
    padding-block: var(--space-5);
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
  }

  .directory-page {
    padding-block: var(--space-7);
  }

  .directory-page__header {
    margin-bottom: var(--space-7);
  }

  .tool-card {
    min-height: 0;
    grid-template-columns: minmax(0, 1fr);
  }

  .tool-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-examples__picker {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .tool-grid .tool-card {
    min-height: 0;
    padding: var(--space-4);
    gap: var(--space-3);
  }

  .tool-card__link {
    grid-column: 1;
  }

  .calculator__masthead {
    padding-inline: var(--space-4);
  }

  .calculator__masthead h1 {
    font-size: clamp(2rem, 8vw, 3rem);
  }

  .calculator__input-panel,
  .result-panel {
    padding: var(--space-6) var(--space-4);
  }

  .field-row,
  .calculator-form--proration .field-row,
  .formula-panel dl,
  .result-summary dl {
    grid-template-columns: 1fr;
  }

  .form-actions {
    grid-template-columns: 1fr;
    align-items: stretch;
  }

  .form-actions .button {
    width: 100%;
  }

  .result-panel {
    min-height: 0;
    height: auto;
    grid-template-rows: auto auto auto;
  }

  .result-panel--renewal,
  .result-panel--rent-comparison {
    grid-template-rows: auto auto auto;
  }

  .result-panel__value {
    font-size: clamp(3.8rem, 19vw, 5.8rem);
  }

  .formula-panel__header {
    align-items: flex-start;
    flex-direction: column;
  }

  .button--formula {
    width: fit-content;
  }

  .formula-panel dl > div {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-1);
  }

  .formula-panel dd {
    text-align: left;
  }

  .segment-table th,
  .segment-table td {
    padding: 0.75rem 0.5rem;
  }

  .segment-table--rent-change {
    font-size: 0.8125rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition: none !important;
  }

  .button:hover,
  .button:active {
    transform: none;
  }
}

[hidden] {
  display: none !important;
}

.page-accent :focus-visible {
  outline-color: var(--accent-text);
}

.tool-card__content h2 a:focus-visible::after {
  outline: 3px solid currentColor;
  outline-offset: -3px;
}

.calculator-intro {
  max-width: 42rem;
  color: var(--color-muted);
  font-size: var(--font-sm);
}

.script-notice {
  margin-bottom: var(--space-4);
  color: #ffb9ae;
}

.calculator[data-result-state="empty"] .result-panel__value {
  font-size: clamp(1.75rem, 3vw, 2.75rem);
  line-height: 1.2;
}

.result-panel__empty {
  max-width: 30ch;
  font-size: var(--font-sm);
  text-align: center;
}

.result-summary dd {
  overflow-wrap: anywhere;
}

.button:disabled {
  cursor: not-allowed;
  opacity: 0.6;
  transform: none;
}

.copy-status {
  min-height: 1.5em;
  margin-top: var(--space-3);
  font-size: var(--font-sm);
}

.calculator .result-panel__value.result-panel__value--long {
  font-size: clamp(1.25rem, 3vw, 2.75rem);
  overflow-wrap: normal;
}