/* Code TT — 2026 Qualified Overtime Estimator
   Mobile-first. Accessible contrast. 44px tap targets. Works at 375px. */

:root {
  --ink: #12263a;
  --ink-soft: #3d5368;
  --muted: #5c7186;
  --paper: #f3f0e8;
  --paper-2: #eae6db;
  --card: #fffcf6;
  --line: #d9d2c3;
  --line-strong: #c4bba8;
  --teal: #0b5f5b;
  --teal-dark: #084844;
  --teal-wash: #e4f1ef;
  --brass: #8a6a2f;
  --brass-wash: #f4ead3;
  --navy: #12263a;
  --navy-2: #1b3a57;
  --danger: #8c2f16;
  --danger-wash: #f8e6df;
  --warn: #6e4a00;
  --warn-wash: #f7edd6;
  --ok: #0b5f5b;
  --ok-wash: #e4f1ef;
  --focus: #1d6fd8;
  --shadow: 0 1px 2px rgba(18, 38, 58, 0.06), 0 8px 24px rgba(18, 38, 58, 0.06);
  --radius: 12px;
  --radius-sm: 8px;
  --header-h: 4.25rem;
  --font-serif: "Fraunces", "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --font-sans: "Source Sans 3", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-mono: "IBM Plex Mono", "ui-monospace", "SFMono-Regular", Menlo, Consolas, monospace;
  --space: 1.25rem;
  --max: 68rem;
  --prose: 42rem;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.55;
  color: var(--ink);
  background: var(--paper);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

a {
  color: var(--teal);
  text-underline-offset: 0.14em;
}

a:hover {
  color: var(--teal-dark);
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

[hidden] {
  display: none !important;
}

.skip {
  position: absolute;
  left: 0.75rem;
  top: -4rem;
  background: var(--ink);
  color: #fff;
  padding: 0.6rem 0.9rem;
  z-index: 100;
  border-radius: 0 0 8px 8px;
}

.skip:focus {
  top: 0;
}

/* ----- Header ----- */

.site-header {
  background: var(--card);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 20;
}

.site-header::after {
  content: "";
  display: block;
  height: 3px;
  background: linear-gradient(90deg, var(--teal) 0 42%, var(--brass) 42% 100%);
}

.header-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0.7rem 1rem 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  color: var(--ink);
  min-height: 44px;
}

.brand:hover {
  color: var(--ink);
}

.mark {
  width: 40px;
  height: 40px;
  flex: 0 0 40px;
  border-radius: 8px;
  background: var(--navy);
  color: #f6efe0;
  display: grid;
  place-items: center;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 0.05rem;
}

.brand-name {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  line-height: 1.1;
}

.brand-sub {
  font-size: 0.78rem;
  color: var(--muted);
  letter-spacing: 0.01em;
  line-height: 1.25;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem 0.15rem;
}

.nav a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 600;
  padding: 0.45rem 0.65rem;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  border-radius: 8px;
}

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

/* ----- Layout ----- */

main {
  flex: 1 0 auto;
  width: 100%;
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 1.25rem 1rem 3rem;
}

.hero {
  margin: 0 0 1.5rem;
  max-width: 40rem;
}

.kicker {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--brass);
  margin: 0 0 0.45rem;
}

.hero h1,
.page-title {
  font-family: var(--font-serif);
  font-weight: 560;
  font-size: clamp(1.7rem, 5vw, 2.35rem);
  line-height: 1.18;
  margin: 0 0 0.7rem;
  color: var(--ink);
}

.lede {
  margin: 0 0 1rem;
  color: var(--ink-soft);
  font-size: 1.08rem;
}

.trust {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.trust li {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--teal-dark);
  background: var(--teal-wash);
  border: 1px solid #cfe3e0;
  border-radius: 999px;
  padding: 0.28rem 0.7rem;
}

/* ----- Calculator grid ----- */

.calc-layout {
  display: grid;
  gap: 1.15rem;
}

@media (min-width: 880px) {
  .header-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 0.65rem 1.5rem;
  }

  .calc-layout {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
    gap: 1.4rem;
  }

  .results-col {
    position: sticky;
    top: 5.25rem;
  }

  .wrap {
    padding: 1.75rem 1.5rem 4rem;
  }
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.card-pad {
  padding: 1rem 1rem 1.15rem;
}

@media (min-width: 600px) {
  .card-pad {
    padding: 1.25rem 1.35rem 1.4rem;
  }
}

.card h2,
.section-label {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 600;
  margin: 0 0 0.85rem;
}

.fieldset {
  border: 0;
  margin: 0 0 1.15rem;
  padding: 0;
}

.fieldset:last-child {
  margin-bottom: 0;
}

.legend {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 0.55rem;
  padding: 0;
  display: block;
}

.hint {
  font-size: 0.88rem;
  color: var(--muted);
  margin: 0.35rem 0 0;
}

.row {
  display: grid;
  gap: 0.75rem;
}

.row-2 {
  display: grid;
  gap: 0.75rem;
}

@media (min-width: 520px) {
  .row-2 {
    grid-template-columns: 1fr 1fr;
  }
}

label.field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-weight: 600;
  font-size: 0.95rem;
}

.optional {
  font-weight: 500;
  color: var(--muted);
  font-size: 0.85rem;
}

input[type="number"],
input[type="text"],
select {
  font: inherit;
  font-weight: 500;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  min-height: 48px;
  padding: 0.5rem 0.75rem;
  width: 100%;
  appearance: none;
  -webkit-appearance: none;
}

input[type="number"] {
  font-variant-numeric: tabular-nums;
}

select {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16'><path fill='%233d5368' d='M4 6l4 5 4-5z'/></svg>");
  background-repeat: no-repeat;
  background-position: right 0.7rem center;
  padding-right: 2rem;
}

input:hover,
select:hover {
  border-color: #9aa8b5;
}

input:focus,
select:focus {
  border-color: var(--focus);
}

.seg {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.45rem;
}

.seg-4 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.45rem;
}

.opt {
  position: relative;
}

.seg input {
  position: absolute;
  inset: 0;
  opacity: 0;
  margin: 0;
  cursor: pointer;
  z-index: 2;
}

.seg label,
.choice {
  min-height: 48px;
  border: 1px solid var(--line-strong);
  background: #fff;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 0.45rem 0.5rem;
  font-weight: 650;
  font-size: 0.95rem;
  cursor: pointer;
  color: var(--ink);
}

.seg input:checked + label {
  background: var(--teal-wash);
  border-color: var(--teal);
  color: var(--teal-dark);
  box-shadow: inset 0 0 0 1px var(--teal);
}

.seg input:focus-visible + label {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

.week-fields {
  display: none;
  margin-top: 0.75rem;
}

.week-fields.is-open {
  display: grid;
}

.irs-example {
  margin: 0.15rem 0 1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.55rem 1rem;
  border-radius: 10px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  border: 1px solid transparent;
  text-decoration: none;
}

.btn-primary {
  background: var(--navy);
  color: #f7f3ea;
  width: 100%;
  margin-top: 0.35rem;
}

.btn-primary:hover {
  background: var(--navy-2);
  color: #fff;
}

.btn-ghost {
  background: transparent;
  color: var(--teal-dark);
  border-color: var(--line-strong);
  font-size: 0.92rem;
  min-height: 44px;
}

.btn-ghost:hover {
  background: var(--teal-wash);
}

/* ----- Results ----- */

.results {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.results[hidden] {
  display: none;
}

.result-hero {
  padding: 1.1rem 1.1rem 1.2rem;
}

.metric-label {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 0.2rem;
}

.metric-value {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 7vw, 2.7rem);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0;
  color: var(--ink);
}

.metric-note {
  margin: 0.4rem 0 0;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.metric-split {
  display: grid;
  gap: 1rem;
  margin-top: 1.1rem;
  padding-top: 1.05rem;
  border-top: 1px dashed var(--line-strong);
}

.metric-split .metric-value {
  font-size: clamp(1.55rem, 5vw, 2rem);
}

.callout {
  border-radius: var(--radius);
  border: 1px solid var(--line);
  padding: 0.85rem 1rem;
  background: var(--card);
}

.callout h3 {
  margin: 0 0 0.3rem;
  font-size: 0.95rem;
  font-weight: 700;
}

.callout p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--ink-soft);
}

.callout + .callout {
  margin-top: 0;
}

.callout-ok {
  background: var(--ok-wash);
  border-color: #c5ddd9;
}

.callout-warn {
  background: var(--warn-wash);
  border-color: #ead9a8;
}

.callout-alert {
  background: var(--danger-wash);
  border-color: #ebc4b6;
}

.callout-alert h3 {
  color: var(--danger);
}

.math {
  background: #1a2b3c;
  color: #e8eef4;
  border-radius: var(--radius);
  padding: 1rem 1.05rem 1.1rem;
  font-size: 0.95rem;
}

.math h3 {
  margin: 0 0 0.55rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #c9b27a;
}

.math ol {
  margin: 0;
  padding-left: 1.15rem;
}

.math li {
  margin: 0.28rem 0;
}

.math .eq {
  font-family: var(--font-mono);
  font-size: 0.86rem;
  background: rgba(255, 255, 255, 0.06);
  padding: 0.65rem 0.7rem;
  border-radius: 6px;
  margin: 0.7rem 0 0;
  overflow-wrap: anywhere;
  font-variant-numeric: tabular-nums;
}

.assumptions {
  font-size: 0.88rem;
  color: var(--ink-soft);
}

.assumptions ul {
  margin: 0.35rem 0 0;
  padding-left: 1.15rem;
}

.placeholder {
  padding: 1.25rem 1.1rem;
  color: var(--ink-soft);
}

.placeholder h2 {
  font-family: var(--font-serif);
  margin: 0 0 0.4rem;
  font-size: 1.25rem;
  color: var(--ink);
}

.file-note {
  margin-top: 1.25rem;
  padding: 1rem 1.1rem;
  background: var(--brass-wash);
  border: 1px solid #e2d3aa;
  border-radius: var(--radius);
}

.file-note h2 {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  margin: 0 0 0.4rem;
}

.file-note p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.98rem;
}

/* ----- Inner pages ----- */

.prose {
  max-width: var(--prose);
}

.prose h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.7rem, 5vw, 2.3rem);
  line-height: 1.2;
  margin: 0 0 0.8rem;
}

.prose h2 {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  margin: 1.8rem 0 0.5rem;
}

.prose h3 {
  font-size: 1.05rem;
  margin: 1.2rem 0 0.35rem;
}

.prose p,
.prose li {
  color: var(--ink);
}

.prose .muted,
.prose .lede {
  color: var(--ink-soft);
}

.formula {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  background: var(--navy);
  color: #eef3f7;
  padding: 0.9rem 1rem;
  border-radius: 10px;
  overflow-wrap: anywhere;
  line-height: 1.45;
}

.example-table {
  width: 100%;
  border-collapse: collapse;
  font-variant-numeric: tabular-nums;
  font-size: 0.95rem;
  margin: 0.7rem 0 1rem;
}

.example-table th,
.example-table td {
  text-align: left;
  padding: 0.55rem 0.5rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.example-table th {
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.cite-list {
  padding-left: 1.15rem;
}

.cite-list a {
  overflow-wrap: anywhere;
}

details {
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: 10px;
  padding: 0.15rem 0.9rem;
  margin: 0.5rem 0;
}

summary {
  min-height: 48px;
  display: flex;
  align-items: center;
  font-weight: 700;
  cursor: pointer;
}

details p {
  margin: 0 0 0.9rem;
}

.sources {
  font-size: 0.92rem;
}

/* ----- Footer ----- */

.site-footer {
  background: var(--navy);
  color: #d5dde6;
  margin-top: auto;
}

.site-footer a {
  color: #e8c872;
}

.site-footer a:hover {
  color: #f4d98a;
}

.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 1.4rem 1rem 2rem;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 0.2rem;
  margin: 0 0 0.9rem;
}

.footer-nav a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  padding: 0.3rem 0.55rem 0.3rem 0;
  margin-right: 0.6rem;
  font-weight: 650;
  text-decoration: none;
}

.fineprint {
  font-size: 0.86rem;
  line-height: 1.5;
  color: #b7c3cf;
  margin: 0;
  max-width: 48rem;
}

.noscript {
  margin: 0 0 1rem;
  padding: 0.8rem 1rem;
  background: var(--danger-wash);
  border: 1px solid #ebc4b6;
  border-radius: 8px;
}

/* ----- Print / motion ----- */

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

@media print {
  .site-header,
  .site-footer,
  .btn,
  .irs-example {
    display: none !important;
  }

  body {
    background: #fff;
    color: #000;
  }

  .card {
    box-shadow: none;
  }
}

@media (max-width: 374px) {
  body {
    font-size: 1rem;
  }

  .brand-sub {
    font-size: 0.72rem;
  }

  .metric-value {
    font-size: 1.75rem;
  }
}