:root {
  --color-ink: #17212b;
  --color-ink-soft: #4a5a69;
  --color-background: #ffffff;
  --color-surface: #f4f7f8;
  --color-brand: #116466;
  --color-brand-dark: #0b4c4e;
  --color-border: #dce4e7;
  --color-focus: #c65d18;
  --font-sans: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 3rem;
  --space-6: 4.5rem;
  --radius: 0.625rem;
  --content-width: 70rem;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--color-ink);
  background: var(--color-background);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
}

a {
  color: inherit;
}

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

input:focus-visible,
select:focus-visible,
button:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  line-height: 1.15;
  letter-spacing: -0.025em;
}

.container {
  width: min(100% - 2rem, var(--content-width));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: var(--space-2);
  left: var(--space-2);
  z-index: 10;
  padding: var(--space-1) var(--space-2);
  color: var(--color-background);
  background: var(--color-ink);
  border-radius: var(--radius);
  transform: translateY(-200%);
}

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

.site-header {
  border-bottom: 1px solid var(--color-border);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 4.5rem;
  gap: var(--space-2);
}

.brand {
  color: var(--color-brand-dark);
  font-size: 1.3rem;
  font-weight: 750;
  letter-spacing: -0.04em;
  text-decoration: none;
}

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

.main-nav a {
  color: var(--color-ink-soft);
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
}

.main-nav a:hover,
.main-nav a[aria-current="page"] {
  color: var(--color-brand-dark);
}

.hero {
  padding: clamp(var(--space-6), 12vw, 8rem) 0;
}

.hero-content {
  max-width: 45rem;
}

.eyebrow {
  margin-bottom: var(--space-2);
  color: var(--color-brand-dark);
  font-size: 0.8125rem;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  max-width: 40rem;
  margin-bottom: var(--space-3);
  font-size: clamp(2.5rem, 7vw, 4.75rem);
}

.hero-copy {
  max-width: 40rem;
  margin-bottom: var(--space-4);
  color: var(--color-ink-soft);
  font-size: clamp(1.125rem, 2vw, 1.35rem);
}

.button {
  display: inline-block;
  padding: 0.8rem 1.15rem;
  color: var(--color-background);
  background: var(--color-brand);
  border: 1px solid var(--color-brand);
  border-radius: var(--radius);
  font-weight: 700;
  text-decoration: none;
}

.button:hover {
  background: var(--color-brand-dark);
  border-color: var(--color-brand-dark);
}

.tools-section,
.clarity {
  padding: var(--space-6) 0;
}

.section-muted {
  background: var(--color-surface);
}

.section-heading {
  margin-bottom: var(--space-4);
}

.section-heading h2,
.clarity h2 {
  margin-bottom: 0;
  font-size: clamp(1.8rem, 4vw, 2.5rem);
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-3);
}

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

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

.tool-card {
  display: flex;
  flex-direction: column;
  min-height: 15rem;
  padding: var(--space-4);
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.tool-card h3 {
  margin-bottom: var(--space-2);
  font-size: 1.25rem;
}

.tool-card h3 a {
  text-decoration: none;
}

.tool-card h3 a:hover {
  color: var(--color-brand-dark);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.tool-card p {
  margin-bottom: var(--space-3);
  color: var(--color-ink-soft);
}

.tool-card--upcoming {
  background: var(--color-surface);
  border-style: dashed;
}

.tool-card--upcoming .eyebrow {
  margin-bottom: var(--space-2);
}

.text-link {
  margin-top: auto;
  color: var(--color-brand-dark);
  font-size: 0.9375rem;
  font-weight: 700;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

.clarity-content {
  max-width: 48rem;
}

.clarity p {
  margin: var(--space-3) 0 0;
  color: var(--color-ink-soft);
  font-size: 1.0625rem;
}

.upcoming-tools {
  padding: var(--space-5) 0;
  border-bottom: 1px solid var(--color-border);
}

.upcoming-tools-content {
  max-width: 48rem;
}

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

.upcoming-tools p {
  margin-bottom: 0;
  color: var(--color-ink-soft);
}

.choose-tool,
.trust-section {
  padding: var(--space-5) 0;
}

.choose-tool {
  background: var(--color-surface);
}

.choose-tool h2,
.trust-content h2 {
  margin-bottom: var(--space-3);
  font-size: clamp(1.5rem, 4vw, 2rem);
}

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

.choose-tool-grid p { margin: 0; }
.choose-tool-grid a { color: var(--color-brand-dark); font-weight: 700; text-underline-offset: 0.2em; }
.trust-content { max-width: 48rem; }
.trust-content p { margin-bottom: 0; color: var(--color-ink-soft); }

.site-footer {
  padding: var(--space-3) 0;
  color: var(--color-ink-soft);
  border-top: 1px solid var(--color-border);
  font-size: 0.875rem;
}

.site-footer p {
  margin: 0;
}

.breadcrumb {
  padding-top: var(--space-3);
}

.breadcrumb a {
  color: var(--color-ink-soft);
  font-size: 0.9375rem;
  text-underline-offset: 0.2em;
}

.calculator-intro {
  padding: var(--space-5) 0 var(--space-4);
}

.calculator-intro h1 {
  margin-bottom: var(--space-2);
  font-size: clamp(2.25rem, 6vw, 3.75rem);
}

.calculator-intro p {
  max-width: 42rem;
  margin-bottom: 0;
  color: var(--color-ink-soft);
  font-size: 1.125rem;
}

.calculator-section {
  padding: 0 0 var(--space-6);
}

.calculator-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(18rem, 0.9fr);
  gap: var(--space-4);
  align-items: start;
}

.calculator-form,
.calculator-results {
  padding: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.calculator-form h2,
.calculator-results h2 {
  margin-bottom: var(--space-3);
  font-size: 1.35rem;
}

.form-group {
  margin-bottom: var(--space-3);
}

.form-group:last-of-type {
  margin-bottom: var(--space-4);
}

.form-group label {
  display: block;
  margin-bottom: 0.35rem;
  font-weight: 700;
}

.form-group legend {
  margin-bottom: 0.35rem;
  font-weight: 700;
}

.tax-options,
.additional-costs {
  padding: 0;
  border: 0;
}

.radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.radio-group label {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin: 0;
  font-weight: 500;
}

.radio-group input {
  width: 1rem;
  height: 1rem;
  accent-color: var(--color-brand);
}

.form-hint {
  margin: -0.15rem 0 var(--space-1);
  color: var(--color-ink-soft);
  font-size: 0.875rem;
}

.input-with-prefix {
  display: flex;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: 0.45rem;
}

.input-prefix {
  display: grid;
  place-items: center;
  min-width: 2.75rem;
  color: var(--color-ink-soft);
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  font-weight: 700;
}

.input-with-prefix input {
  width: 100%;
  min-height: 2.8rem;
  padding: 0.5rem 0.7rem;
  color: var(--color-ink);
  border: 0;
  font: inherit;
}

.input-with-prefix:focus-within {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
}

.input-with-prefix input:focus {
  outline: 0;
}

.field-error {
  min-height: 1.25rem;
  margin: var(--space-1) 0 0;
  color: #a13518;
  font-size: 0.875rem;
}

.additional-cost-list {
  display: grid;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
}

.additional-cost-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(5.5rem, 0.65fr) auto auto;
  gap: var(--space-1);
  align-items: center;
}

.additional-cost-row input,
.additional-cost-row select,
.remove-cost-button {
  min-height: 2.8rem;
  padding: 0.5rem 0.65rem;
  color: var(--color-ink);
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: 0.45rem;
  font: inherit;
}

.remove-cost-button {
  color: var(--color-ink-soft);
  cursor: pointer;
}

.button-secondary {
  color: var(--color-brand-dark);
  background: transparent;
}

.button-secondary:hover {
  color: var(--color-background);
}

.calculator-results {
  background: var(--color-surface);
}

.result-empty {
  margin: 0;
  color: var(--color-ink-soft);
}

.results-content[hidden],
.result-empty[hidden] {
  display: none;
}

.primary-result {
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-border);
}

.result-label {
  display: block;
  color: var(--color-ink-soft);
  font-size: 0.875rem;
  font-weight: 700;
}

.result-value {
  display: block;
  margin-top: 0.2rem;
  font-size: clamp(2rem, 5vw, 2.7rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.1;
}

.result-value.negative {
  color: #a13518;
}

.result-list {
  margin: 0;
}

.result-list div {
  display: flex;
  justify-content: space-between;
  gap: var(--space-2);
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--color-border);
}

.result-list dt {
  color: var(--color-ink-soft);
}

.result-list dd {
  margin: 0;
  font-weight: 700;
  text-align: right;
}

.result-breakdown div:last-child {
  border-bottom: 2px solid var(--color-ink-soft);
}

.result-indicators {
  margin-top: var(--space-3);
}

.percentage-breakdown {
  margin-top: var(--space-4);
}

.percentage-breakdown h3 {
  margin-bottom: var(--space-2);
  font-size: 1rem;
}

.percentage-bar {
  display: grid;
  grid-template-columns: minmax(7rem, 1fr) 2.5rem;
  gap: var(--space-1);
  align-items: center;
  margin-bottom: 0.65rem;
  font-size: 0.875rem;
}

.percentage-bar__track {
  grid-column: 1 / -1;
  height: 0.5rem;
  overflow: hidden;
  background: var(--color-border);
  border-radius: 100vw;
}

.percentage-bar__fill {
  height: 100%;
  background: var(--color-brand);
  border-radius: inherit;
}

.percentage-bar--profit .percentage-bar__fill { background: #498061; }
.percentage-bar--loss .percentage-bar__fill { background: #a13518; }

.break-even-chart {
  margin-top: var(--space-4);
}

.break-even-chart h3 {
  margin-bottom: 0.15rem;
  font-size: 1rem;
}

.break-even-chart p {
  margin-bottom: var(--space-2);
  color: var(--color-ink-soft);
  font-size: 0.8125rem;
}

.break-even-chart svg {
  display: block;
  width: 100%;
  height: auto;
}

.chart-axis,
.chart-guide {
  stroke: var(--color-border);
  stroke-width: 1;
}

.chart-income,
.chart-costs {
  fill: none;
  stroke-linecap: round;
  stroke-width: 3;
}

.chart-income { stroke: var(--color-brand); }
.chart-costs { stroke: var(--color-focus); }
.chart-point { fill: var(--color-ink); }
.chart-label { fill: var(--color-ink-soft); font-family: var(--font-sans); font-size: 11px; }
.chart-label--income { fill: var(--color-brand-dark); }
.chart-label--costs { fill: var(--color-focus); }

.calculator-explainer {
  padding: var(--space-5) 0 var(--space-6);
  background: var(--color-surface);
}

.credit-input-grid,
.comparison-result-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
}

.loan-inputs {
  min-width: 0;
}

.loan-inputs legend {
  margin-bottom: var(--space-3);
  font-size: 1.35rem;
  font-weight: 700;
}

.credit-comparison-form > .button {
  margin-top: var(--space-3);
}

.comparison-results {
  margin-top: var(--space-5);
}

.comparison-results > h2 {
  margin-bottom: var(--space-3);
  font-size: clamp(1.8rem, 4vw, 2.5rem);
}

.comparison-card {
  padding: var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.comparison-card h3 { margin-bottom: var(--space-2); }
.comparison-payment { display: block; margin: 0.2rem 0 var(--space-3); font-size: 2rem; font-weight: 800; letter-spacing: -0.04em; }
.comparison-summary { margin: var(--space-3) 0 0; font-weight: 700; }

.growth-history {
  margin-top: var(--space-5);
}

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

.table-wrapper { overflow-x: auto; }
.growth-history table { width: 100%; border-collapse: collapse; }
.growth-history th,
.growth-history td { padding: 0.75rem; border-bottom: 1px solid var(--color-border); text-align: right; white-space: nowrap; }
.growth-history th { color: var(--color-ink-soft); font-size: 0.875rem; }
.growth-history th:first-child,
.growth-history td:first-child { text-align: left; }

.stock-status {
  margin-bottom: var(--space-3);
  padding: var(--space-2);
  border-left: 4px solid var(--color-brand);
  background: var(--color-background);
}

.stock-status--order { border-left-color: #b7791f; }
.stock-status--risk { border-left-color: #a13518; }
.status-label { display: block; font-weight: 800; }
.stock-status p { margin: var(--space-1) 0 0; font-size: 0.9rem; }
.stock-interpretation { margin: var(--space-3) 0 0; font-weight: 700; }

.safety-mode { padding: 0; border: 0; }
.estimate-toggle { display: flex; align-items: center; gap: 0.5rem; margin: var(--space-2) 0; font-weight: 700; }
.estimate-toggle input { width: 1rem; height: 1rem; accent-color: var(--color-brand); }
.manual-safety-group { margin-top: var(--space-2); }
.safety-estimation-fields { margin-top: var(--space-3); padding: var(--space-3); background: var(--color-surface); border-radius: var(--radius); }
.safety-estimation-fields .form-group:last-of-type { margin-bottom: var(--space-2); }
.safety-estimate-preview { margin: var(--space-2) 0 0; color: var(--color-brand-dark); font-weight: 800; }

.stock-chart-section,
.inventory-cta {
  margin-top: var(--space-5);
  padding: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.stock-chart-section h2,
.inventory-cta h2 { margin-bottom: var(--space-2); font-size: 1.35rem; }
.stock-chart-section > p,
.inventory-cta p { color: var(--color-ink-soft); }
.stock-chart-section svg { display: block; width: 100%; height: auto; }
.stock-chart-axis, .stock-chart-guide { stroke: var(--color-border); stroke-width: 1; }
.stock-chart-guide { stroke-dasharray: 4 4; }
.stock-chart-line { fill: none; stroke: var(--color-brand); stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; }
.stock-chart-line--risk { stroke: #a13518; }
.stock-chart-order { stroke: #b7791f; stroke-width: 1.5; stroke-dasharray: 6 4; }
.stock-chart-safety { stroke: #a13518; stroke-width: 1.5; stroke-dasharray: 3 4; }
.stock-chart-buy { fill: #b7791f; }
.stock-chart-arrival { fill: #a13518; }
.stock-chart-label { fill: var(--color-ink-soft); font-family: var(--font-sans); font-size: 12px; }
.inventory-cta { background: var(--color-surface); }
.button:disabled { color: var(--color-ink-soft); background: var(--color-border); border-color: var(--color-border); cursor: not-allowed; }

.future-tool-cta {
  margin-top: var(--space-5);
  padding: var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.future-tool-cta h2 { margin-bottom: var(--space-2); font-size: 1.35rem; }
.future-tool-cta p { color: var(--color-ink-soft); }

#rounding-mode {
  width: 100%;
  min-height: 2.8rem;
  padding: 0.5rem 0.7rem;
  color: var(--color-ink);
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: 0.45rem;
  font: inherit;
}

.explainer-content { max-width: 48rem; }
.explainer-content h2 { margin-bottom: var(--space-3); font-size: clamp(1.8rem, 4vw, 2.5rem); }
.explainer-content p { color: var(--color-ink-soft); }

.calculator-note {
  max-width: 50rem;
  margin: var(--space-4) 0 0;
  color: var(--color-ink-soft);
  font-size: 0.9rem;
}

@media (max-width: 45rem) {
  .tool-grid,
  .tool-grid--two-columns,
  .tool-grid--financial {
    grid-template-columns: 1fr;
  }

  .tools-section,
  .clarity {
    padding: var(--space-5) 0;
  }

  .calculator-layout {
    grid-template-columns: 1fr;
  }

  .additional-cost-row { grid-template-columns: minmax(0, 1fr) 5.5rem auto; }
  .additional-cost-row .cost-name { grid-column: 1 / -1; }

  .credit-input-grid,
  .comparison-result-grid { grid-template-columns: 1fr; }

  .choose-tool-grid { grid-template-columns: 1fr; }
}

@media (max-width: 25rem) {
  .header-content {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    padding: var(--space-2) 0;
  }

  .main-nav {
    gap: var(--space-2);
  }
}

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