/* "How much chemical goes in my tank?"
   Mobile first: this page is used on a phone, standing in a yard, one-handed,
   sometimes with gloves. Three inputs, an answer big enough to read at arm's
   length, and everything optional collapsed below it. */
.spray-rate-page main { color: var(--odx-ink); }
.spray-rate-page .wrap { width: 100%; max-width: 1080px; margin-inline: auto; padding-inline: 18px; }
.spray-rate-page main p, .spray-rate-page main li, .spray-rate-page main dd { font-size: 16.5px; line-height: 1.7; color: var(--odx-muted); }
.spray-rate-page main p { margin: 0 0 16px; }
.spray-rate-page main ul, .spray-rate-page main ol { margin: 0 0 16px; padding-left: 22px; }
.spray-rate-page main li { margin-bottom: 8px; }
.spray-rate-page main strong { color: var(--odx-ink); }
.spray-rate-page main [id] { scroll-margin-top: 110px; }
.spray-rate-page main a { color: var(--odx-accent); text-underline-offset: 4px; }
.spray-rate-page :focus-visible { outline: 2px solid var(--odx-focus); outline-offset: 3px; border-radius: 4px; }
.spray-rate-page .btn, .spray-rate-page button, .spray-rate-page input, .spray-rate-page select, .spray-rate-page summary { font-family: inherit; }
.spray-rate-page h2 { font-size: clamp(24px, 3vw, 34px); line-height: 1.2; letter-spacing: -.025em; text-wrap: balance; margin: 0 0 16px; }
.spray-rate-page h3 { font-size: 20px; line-height: 1.35; letter-spacing: -.015em; margin: 0 0 10px; }

/* ── Opening ───────────────────────────────────────────────────────────── */
.spray-hero { padding: 12px 0 10px; }
.spray-hero h1 { font-size: clamp(26px, 4.6vw, 46px); line-height: 1.08; letter-spacing: -.035em; text-wrap: balance; margin: 0 0 8px; }
.spray-hero h1 span { color: var(--odx-accent); }
.spray-hero .spray-lede { font-size: 16px; line-height: 1.45; color: var(--odx-muted); max-width: 780px; margin-bottom: 0; }
.spray-back { display: inline-flex; align-items: center; gap: 7px; min-height: 32px; font-size: 14px; font-weight: 700; color: var(--odx-accent); margin-bottom: 0; }

/* The label banner is deliberately the only loud thing besides the answer. */
.spray-callout { display: flex; gap: 10px; padding: 11px 13px; border-radius: 12px; background: var(--odx-accent-soft); border: 1px solid var(--odx-border); margin: 0 0 12px; }
.spray-callout p { margin: 0 !important; font-size: 15px !important; line-height: 1.45 !important; color: var(--odx-ink) !important; }
.spray-callout strong { display: block; font-size: 16px; margin-bottom: 1px; }

/* ── The tool ──────────────────────────────────────────────────────────── */
.spray-tool { padding: 4px 0 30px; }
.spray-card { border: 1px solid var(--odx-border); border-radius: 16px; background: var(--odx-surface); padding: 14px; box-shadow: var(--odx-shadow); }
.spray-card-head { margin-bottom: 12px; }
.spray-card-head h2 { font-size: 19px; margin-bottom: 2px; }
.spray-card-head p { margin: 0; font-size: 14.5px; }
.spray-fields { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px 12px; }
.spray-field-product { grid-column: 1 / -1; }
.spray-field label { display: block; font-size: 15.5px; font-weight: 700; color: var(--odx-ink); margin-bottom: 6px; line-height: 1.3; }
.spray-num { display: inline-flex; align-items: center; justify-content: center; width: 22px; height: 22px; margin-right: 7px; border-radius: 50%; background: var(--odx-accent); color: var(--odx-on-accent); font-size: 13px; font-weight: 800; vertical-align: 1px; }
/* The number field keeps the room; the unit selector is capped so a phone never
   clips the digits. Spinners are hidden: they are 12px tap targets on a phone. */
.spray-pair { display: grid; grid-template-columns: minmax(0, 1fr) minmax(74px, 84px); gap: 7px; }
.spray-pair select { font-size: 14px; padding-inline: 7px; }
.spray-field input[type="number"]::-webkit-outer-spin-button,
.spray-field input[type="number"]::-webkit-inner-spin-button { -webkit-appearance: none; appearance: none; margin: 0; }
.spray-field select, .spray-field input {
  width: 100%; min-height: 50px; font-size: 16px; color: var(--odx-ink);
  background: var(--odx-bg); border: 1.5px solid var(--odx-control-border); border-radius: 12px; padding: 10px 8px;
}
.spray-field input { font-variant-numeric: tabular-nums; }
.spray-field input[type="number"] { -moz-appearance: textfield; appearance: textfield; }
.spray-select-product { font-weight: 600; }
.spray-help { font-size: 13.5px !important; line-height: 1.45 !important; color: var(--odx-subtle) !important; margin: 6px 0 0 !important; }
.spray-rate-box { margin-top: 9px; padding: 10px 12px; border-radius: 11px; background: var(--odx-soft); border-left: 4px solid var(--odx-accent); }
.spray-rate-line { margin: 0 0 3px !important; font-size: 15.5px !important; line-height: 1.4 !important; color: var(--odx-ink) !important; }
.spray-rate-note { margin: 0 !important; font-size: 13.5px !important; line-height: 1.45 !important; color: var(--odx-subtle) !important; }
.spray-rate-flag { margin: 7px 0 0 !important; font-size: 13.5px !important; line-height: 1.45 !important; color: var(--odx-ink) !important; padding-top: 7px; border-top: 1px solid var(--odx-border); }
.spray-more { margin-top: 6px; }
.spray-more summary { min-height: 44px; display: flex; align-items: center; gap: 8px; font-size: 14.5px; font-weight: 700; color: var(--odx-accent); cursor: pointer; }
.spray-more summary::marker { color: var(--odx-accent); }
.spray-more-body { padding: 4px 0 6px; }
.spray-more-body p { font-size: 15px !important; }
.spray-more-body ul { padding-left: 20px !important; }
.spray-more-body li { font-size: 15px; }
.spray-rate-source { font-size: 14px; color: var(--odx-subtle); }
.spray-optional-stack { margin-top: 20px; }
.spray-optional-stack .spray-panel-body > p:first-child { margin-top: 0; }
.spray-context-note { margin-top: 12px; padding: 13px 15px; border-radius: 12px; background: var(--odx-soft); border-left: 4px solid var(--odx-accent); }
.spray-context-note p { margin: 0 0 8px !important; font-size: 15px !important; color: var(--odx-ink) !important; }
.spray-context-note p:last-child { margin-bottom: 0 !important; }

/* ── The answer: the largest thing on the page ─────────────────────────── */
.spray-answer { margin-top: 14px; border: 2px solid var(--odx-accent); border-radius: 18px; background: var(--odx-surface); padding: 16px 14px; }
.spray-answer-body .ans-lead { font-size: 19px; line-height: 1.4; color: var(--odx-muted); margin: 0 0 4px; }
.spray-answer-body .ans-amount { font-size: clamp(46px, 13vw, 84px); line-height: 1; font-weight: 800; letter-spacing: -.045em; color: var(--odx-ink); margin: 0; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.spray-answer-body .ans-of { font-size: clamp(17px, 3.4vw, 23px); line-height: 1.3; font-weight: 700; color: var(--odx-ink); margin: 6px 0 2px; }
.spray-answer-body .ans-water { font-size: clamp(22px, 4.4vw, 32px); line-height: 1.25; font-weight: 800; letter-spacing: -.03em; color: var(--odx-ink); margin: 0; }
.spray-answer-body .ans-secondary { font-size: 15px; color: var(--odx-subtle); margin: 8px 0 0; }
.spray-answer-body .ans-waterrate { font-size: 14.5px; color: var(--odx-subtle); margin: 5px 0 0; }
.spray-answer-body .ans-tank { font-size: 18px; line-height: 1.5; color: var(--odx-ink); margin: 14px 0 0; padding-top: 13px; border-top: 1px solid var(--odx-border); }
.spray-answer-body .ans-loads { font-size: 18px; line-height: 1.5; font-weight: 700; color: var(--odx-ink); margin: 7px 0 0; }
.spray-answer-body .ans-flag { font-size: 15.5px; line-height: 1.5; margin: 13px 0 0; padding: 11px 13px; border-radius: 12px; background: var(--odx-accent-soft); color: var(--odx-ink); border-left: 4px solid var(--odx-accent); }
.spray-answer-body .ans-math { font-size: 14px; line-height: 1.6; color: var(--odx-muted); margin: 13px 0 0; padding-top: 12px; border-top: 1px solid var(--odx-border); overflow-wrap: anywhere; }
.spray-answer-body .ans-label { font-size: 14.5px; line-height: 1.55; color: var(--odx-ink); margin: 12px 0 0; padding: 11px 13px; border-radius: 12px; background: var(--odx-soft); }
.spray-answer-empty .ans-lead { margin-bottom: 8px; }
.spray-answer-empty ul { margin: 0 !important; }
.spray-foot-note { margin: 14px 0 0 !important; font-size: 13.5px !important; color: var(--odx-subtle) !important; }
.spray-status { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }

/* ── Collapsed detail ──────────────────────────────────────────────────── */
.spray-panel { margin-bottom: 14px; border: 1px solid var(--odx-border); border-radius: 16px; background: var(--odx-surface); }
.spray-panel > summary { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 62px; padding: 14px 18px; font-size: 18px; font-weight: 800; color: var(--odx-ink); cursor: pointer; }
.spray-panel > summary::after { content: "＋"; font-size: 20px; color: var(--odx-accent); }
.spray-panel[open] > summary::after { content: "－"; }
.spray-panel-body { padding: 0 18px 18px; }
.spray-panel-body h3 { font-size: 18px; margin-top: 20px; }
.spray-panel-body h3:first-child { margin-top: 0; }
.spray-panel-body p:last-child, .spray-panel-body ul:last-child { margin-bottom: 0; }
.spray-panel-sources { margin-top: 24px; }

/* ── Reference, method, sources, FAQ ───────────────────────────────────── */
.spray-section { padding: 34px 0; }
.spray-section-head { max-width: 820px; margin-bottom: 20px; }
.spray-section-head p:last-child { margin-bottom: 0; }
.spray-ref-list { display: grid; gap: 12px; margin: 0 !important; padding: 0 !important; list-style: none; }
.spray-ref-item { padding: 16px; border: 1px solid var(--odx-border); border-radius: 14px; background: var(--odx-surface); margin: 0; }
.spray-ref-item h3 { font-size: 17.5px; margin-bottom: 4px; }
.spray-ref-actives { font-size: 15px !important; margin: 0 0 4px !important; }
.spray-ref-group { font-size: 14px !important; color: var(--odx-subtle) !important; margin: 0 0 10px !important; }
.spray-ref-rate { font-size: 15.5px !important; color: var(--odx-ink) !important; margin: 0 !important; }
.spray-ref-source { display: block; font-size: 14px !important; color: var(--odx-subtle) !important; margin-top: 6px !important; }
.spray-chip { display: inline-block; font-size: 13px; font-weight: 700; padding: 3px 9px; border-radius: 999px; background: var(--odx-soft); color: var(--odx-ink); margin-top: 8px; }
.spray-chip-missing { background: transparent; border: 1px dashed var(--odx-control-border); color: var(--odx-subtle); font-weight: 600; }
.spray-ref-note { font-size: 15px; }

.spray-source-list { list-style: none; padding: 0 !important; display: grid; gap: 10px; }
.spray-source-list li { padding: 13px 15px; border: 1px solid var(--odx-border); border-radius: 12px; background: var(--odx-surface); margin: 0; }
.spray-source-list a { display: block; font-weight: 700; font-size: 15.5px; }
.spray-source-list span { display: block; font-size: 14px; color: var(--odx-subtle); margin-top: 4px; }

.spray-faq-list { margin: 0 !important; }
.spray-faq-list > div { padding: 16px 0; border-top: 1px solid var(--odx-border); }
.spray-faq-list > div:first-child { border-top: 0; }
.spray-faq-list dt { font-size: 17.5px; font-weight: 800; color: var(--odx-ink); margin-bottom: 7px; }
.spray-faq-list dd { margin: 0; }

.spray-related-grid { display: grid; grid-template-columns: 1fr; gap: 12px; }
.spray-related-grid a { display: grid; gap: 5px; padding: 16px; border: 1px solid var(--odx-border); border-radius: 14px; background: var(--odx-surface); text-decoration: none; min-height: 44px; }
.spray-related-grid a:hover { border-color: var(--odx-accent); }
.spray-related-grid strong { font-size: 16.5px; color: var(--odx-ink); }
.spray-related-grid span { font-size: 15px; color: var(--odx-muted); }
.spray-noscript { padding: 14px 16px; border-radius: 12px; background: var(--odx-soft); }

/* On the narrowest phones the two number fields keep their columns but stack the
   value above its unit, which leaves a five-digit area room to be read. */
@media (max-width: 399px) {
  .spray-pair { grid-template-columns: 1fr; }
}

@media (min-width: 720px) {
  .spray-rate-page .wrap { padding-inline: 24px; }
  .spray-card { padding: 24px; }
  .spray-answer { padding: 26px 24px; }
  .spray-hero { padding: 30px 0 18px; }
  .spray-pair { grid-template-columns: minmax(0, 1fr) minmax(96px, auto); }
  .spray-pair select { font-size: 16px; padding-inline: 12px; }
  .spray-fields { gap: 22px; }
  .spray-field label { font-size: 16px; }
  .spray-help { font-size: 14.5px !important; }
  .spray-related-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .spray-source-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 1000px) {
  .spray-fields { grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr) minmax(0, 1fr); align-items: start; }
  .spray-field-product { grid-column: auto; }
  .spray-related-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .spray-hero { padding: 44px 0 30px; }
}

@media (prefers-reduced-motion: reduce) {
  .spray-rate-page * { scroll-behavior: auto !important; }
}