@import url("https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@500;600&family=Manrope:wght@400;600;700;800&display=swap");

:root {
  color-scheme: light;
  --ink: #1f2422;
  --muted: #65706b;
  --line: #d9dfd8;
  --paper: #f8f8f2;
  --panel: #ffffff;
  --green: #285f4d;
  --green-dark: #173e33;
  --sage: #dce8dc;
  --coral: #c35e4c;
  --yellow: #e6b44d;
  --blue: #426d8c;
  --danger: #a33d33;
  --shadow: 0 20px 60px rgba(31, 36, 34, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Manrope", "Segoe UI", sans-serif;
  line-height: 1.55;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
}

.site-header,
.site-footer {
  max-width: 1220px;
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 850;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: var(--green);
  color: #fff;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

nav a {
  color: var(--muted);
  font-weight: 800;
  text-decoration: none;
}

.tool-hero {
  max-width: 1280px;
  margin: 0 auto;
  padding: 24px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 410px);
  grid-template-areas:
    "calculator results"
    "media results";
  gap: 18px;
  align-items: start;
}

.hero-media {
  grid-area: media;
  position: relative;
  overflow: hidden;
  min-height: 230px;
  border-radius: 8px;
  background: var(--sage);
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 48%;
}

.media-note {
  position: absolute;
  right: 16px;
  bottom: 16px;
  left: 16px;
  display: grid;
  gap: 2px;
  max-width: 480px;
  padding: 13px 14px;
  border: 1px solid rgba(255, 255, 255, 0.58);
  border-radius: 7px;
  background: rgba(248, 248, 242, 0.88);
  backdrop-filter: blur(8px);
}

.media-note strong {
  color: var(--green-dark);
}

.media-note span {
  color: var(--muted);
  font-weight: 750;
}

.calculator-panel,
.results-panel,
.table-card,
.formula-card,
.content-grid article,
.cluster-band,
.faq-band details,
.page-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.calculator-panel {
  grid-area: calculator;
  padding: 22px;
  display: grid;
  gap: 16px;
}

.panel-title h1 {
  margin: 0 0 12px;
  max-width: 880px;
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1.02;
  letter-spacing: 0;
}

h1,
h2,
h3,
p,
label,
summary {
  overflow-wrap: anywhere;
}

h2 {
  margin: 0 0 12px;
  font-size: clamp(1.45rem, 2.6vw, 2.2rem);
  line-height: 1.08;
  letter-spacing: 0;
}

h3 {
  margin: 20px 0 8px;
}

.panel-title p:not(.eyebrow) {
  max-width: 760px;
  color: var(--muted);
  font-size: 1.05rem;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--coral);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0;
  text-transform: uppercase;
}

.input-section {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcf8;
}

.section-heading {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.section-heading span {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--green-dark);
  color: #fff;
  font-family: "IBM Plex Mono", monospace;
  font-weight: 850;
}

.section-heading h2 {
  margin: 0;
  font-size: 1.08rem;
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

label {
  display: grid;
  gap: 7px;
  color: var(--ink);
  font-weight: 800;
}

input {
  width: 100%;
  min-height: 46px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  color: var(--ink);
  font: inherit;
}

input[type="number"] {
  appearance: textfield;
  -moz-appearance: textfield;
}

input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
  margin: 0;
  appearance: none;
  -webkit-appearance: none;
}

input:focus,
button:focus-visible,
a:focus-visible,
summary:focus-visible {
  outline: 3px solid rgba(40, 95, 77, 0.22);
  outline-offset: 2px;
}

.check-row {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 46px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
}

.check-row input {
  width: 18px;
  min-height: 18px;
}

.mode-toggle {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 12px;
}

.mode-toggle label {
  cursor: pointer;
}

.mode-toggle input {
  position: absolute;
  width: auto;
  min-height: 0;
  opacity: 0;
  pointer-events: none;
}

.mode-toggle span {
  display: grid;
  place-items: center;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  text-align: center;
}

.mode-toggle input:checked + span {
  border-color: var(--green);
  background: var(--green-dark);
  color: #fff;
}

.hidden {
  display: none;
}

.hint {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.results-panel {
  grid-area: results;
  position: sticky;
  top: 18px;
  padding: 24px;
  box-shadow: var(--shadow);
}

.hero-result {
  margin-bottom: 18px;
}

.hero-result span,
.hero-result em {
  display: block;
  color: var(--muted);
  font-style: normal;
  font-weight: 750;
}

.hero-result strong {
  display: block;
  margin: 3px 0;
  color: var(--green-dark);
  font-family: "IBM Plex Mono", monospace;
  font-size: clamp(2.8rem, 5vw, 4.1rem);
  line-height: 1;
}

.assumption-row {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin: -5px 0 16px;
}

.assumption-row span {
  padding: 6px 8px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fbfcf8;
  color: var(--green-dark);
  font-size: 0.78rem;
  font-weight: 850;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.metric-grid div,
.buy-list {
  padding: 13px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #f8faf6;
}

.metric-grid span,
.buy-list span {
  display: block;
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 800;
}

.metric-grid strong {
  display: block;
  font-family: "IBM Plex Mono", monospace;
  font-size: 1.22rem;
}

.paint-plan {
  margin-top: 12px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #fbfcf8;
}

.plan-heading,
.plan-legend {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.plan-heading span {
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 850;
}

.plan-heading strong,
.plan-legend strong {
  font-family: "IBM Plex Mono", monospace;
}

.plan-bar {
  overflow: hidden;
  display: flex;
  height: 14px;
  margin: 10px 0;
  border-radius: 999px;
  background: #e7ede6;
}

.plan-bar span {
  min-width: 0;
  transition: width 160ms ease;
}

#material-bar {
  width: 50%;
  background: var(--yellow);
}

#labor-bar {
  width: 50%;
  background: var(--green-dark);
}

.plan-legend {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 850;
}

.plan-legend span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.plan-legend i {
  display: inline-block;
  width: 9px;
  height: 9px;
  border-radius: 999px;
}

.material-dot {
  background: var(--yellow);
}

.labor-dot {
  background: var(--green-dark);
}

.buy-list {
  margin-top: 12px;
  border-color: rgba(230, 180, 77, 0.55);
  background: #fffaf0;
}

.buy-list p {
  margin: 4px 0 0;
}

button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 48px;
  margin-top: 14px;
  border: 0;
  border-radius: 7px;
  background: var(--green-dark);
  color: #fff;
  font: inherit;
  font-weight: 850;
  cursor: pointer;
}

.copy-status {
  min-height: 24px;
  margin: 9px 0 0;
  color: var(--green-dark);
  font-weight: 850;
}

.breakdown-band {
  max-width: 1220px;
  margin: 0 auto;
  padding: 28px 24px 44px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 18px;
}

.table-card,
.formula-card,
.content-grid article,
.cluster-band,
.faq-band details,
.page-card {
  padding: 24px;
}

table {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
}

th,
td {
  padding: 13px 10px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
  overflow-wrap: anywhere;
}

th:nth-child(1),
td:nth-child(1) {
  width: 31%;
}

th:nth-child(2),
td:nth-child(2) {
  width: 43%;
}

th:nth-child(3),
td:nth-child(3) {
  width: 26%;
}

th:last-child,
td:last-child {
  text-align: right;
  font-family: "IBM Plex Mono", monospace;
  font-weight: 850;
}

td:nth-child(2) {
  color: var(--muted);
}

.content-grid {
  max-width: 1220px;
  margin: 0 auto;
  padding: 0 24px 44px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.cluster-band {
  max-width: 1220px;
  margin: 0 auto 44px;
}

.cluster-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
}

.cluster-grid a {
  display: grid;
  align-content: start;
  gap: 5px;
  min-height: 124px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8faf6;
  text-decoration: none;
}

.cluster-grid strong {
  color: var(--green-dark);
  font-size: 1.04rem;
}

.cluster-grid span {
  color: var(--muted);
  font-weight: 700;
}

.faq-band {
  max-width: 920px;
  margin: 0 auto;
  padding: 0 24px 58px;
}

.faq-band details {
  margin-top: 12px;
}

summary {
  cursor: pointer;
  font-weight: 850;
}

.site-footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.page {
  max-width: 960px;
  margin: 0 auto;
  padding: 48px 24px 76px;
}

.page h1 {
  margin: 0 0 16px;
  font-size: clamp(2.2rem, 5vw, 4rem);
  line-height: 1;
}

.page .lede {
  color: var(--muted);
  font-size: 1.12rem;
}

.page-card {
  margin-top: 18px;
}

.page-card a {
  color: var(--blue);
  font-weight: 850;
}

.article-list {
  display: grid;
  gap: 14px;
  margin-top: 26px;
}

.article-card {
  display: grid;
  gap: 8px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  color: inherit;
  text-decoration: none;
}

.article-card span {
  color: var(--coral);
  font-size: 0.78rem;
  font-weight: 850;
  text-transform: uppercase;
}

.article-card strong {
  color: var(--green-dark);
  font-size: clamp(1.35rem, 2.5vw, 2rem);
  line-height: 1.08;
}

.article-card p {
  max-width: 760px;
  margin: 0;
  color: var(--muted);
  font-weight: 700;
}

.article-page {
  max-width: 980px;
  margin: 0 auto;
  padding: 48px 24px 78px;
}

.article-page article {
  display: grid;
  gap: 18px;
}

.article-page h1 {
  max-width: 860px;
  margin: 0;
  font-size: clamp(2.2rem, 5.5vw, 4.6rem);
  line-height: 0.98;
}

.article-page h2 {
  margin-top: 18px;
}

.article-page p,
.article-page li {
  color: var(--ink);
  font-size: 1.03rem;
}

.article-page .lede {
  color: var(--muted);
  font-size: 1.16rem;
}

.article-page ul {
  margin: 0;
  padding-left: 22px;
}

.article-callout,
.source-note {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8faf6;
}

.article-callout {
  border-color: rgba(230, 180, 77, 0.55);
  background: #fffaf0;
}

.article-callout strong {
  display: block;
  color: var(--green-dark);
  font-size: 1.3rem;
}

.article-callout a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  border-radius: 7px;
  background: var(--green-dark);
  color: #fff;
  font-weight: 850;
  text-decoration: none;
}

.source-note h2 {
  font-size: 1.35rem;
}

.source-note p {
  color: var(--muted);
  font-size: 0.98rem;
}

.source-note a {
  color: var(--blue);
  font-weight: 850;
}

@media (max-width: 1180px) {
  .tool-hero {
    grid-template-columns: minmax(0, 1fr) minmax(320px, 380px);
  }

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

@media (max-width: 860px) {
  .site-header,
  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .tool-hero,
  .breakdown-band,
  .content-grid {
    grid-template-columns: 1fr;
  }

  .tool-hero {
    grid-template-areas:
      "calculator"
      "results"
      "media";
  }

  .results-panel {
    position: static;
  }

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

@media (max-width: 620px) {
  .tool-hero {
    padding: 14px;
  }

  .calculator-panel,
  .results-panel,
  .table-card,
  .formula-card,
  .content-grid article,
  .cluster-band,
  .faq-band details,
  .page-card {
    padding: 16px;
  }

  .field-grid,
  .mode-toggle,
  .metric-grid,
  .cluster-grid {
    grid-template-columns: 1fr;
  }

  .hero-media {
    min-height: 220px;
  }

  .media-note {
    position: static;
    max-width: none;
    border: 0;
    border-radius: 0;
    background: var(--panel);
  }

  th:nth-child(2),
  td:nth-child(2) {
    display: none;
  }
}