/* Fieldkit labor calculator — locked visual system
   bg #F4F5F7 · card #FFF · ink #0B0D12 · accent #2563EB
   keep #047857 · fee #E11D48 · radius 10px · Inter
   No beige, serif, orange, drop shadows, mustard. */

:root {
  --bg: #f4f5f7;
  --bg-band: #eef0f3;
  --ink: #0b0d12;
  --muted: #5a6573;
  --line: #e4e7ec;
  --card: #ffffff;
  --keep: #047857;
  --keep-bg: #ecfdf5;
  --keep-line: #a7f3d0;
  --fee: #e11d48;
  --fee-bg: #fff1f2;
  --accent: #2563eb;
  --accent-ink: #1d4ed8;
  --slate: #475569;
  --radius: 10px;
  --radius-sm: 8px;
  --sans: Inter, system-ui, -apple-system, "Segoe UI", sans-serif;
  --max: 68rem;
}

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

html { color-scheme: light; }

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--ink);
  background: var(--bg);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: var(--accent-ink);
  text-underline-offset: 0.18em;
}
a:hover { color: var(--accent); }

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

.skip {
  position: absolute;
  left: 0.75rem;
  top: -3rem;
  background: var(--ink);
  color: #fff;
  padding: 0.5rem 0.8rem;
  z-index: 20;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  text-decoration: none;
}
.skip:focus { top: 0; }

.wrap {
  width: min(var(--max), calc(100% - 1.5rem));
  margin-inline: auto;
}

/* Header */
.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(244, 245, 247, 0.92);
  position: sticky;
  top: 0;
  z-index: 10;
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.7rem 0;
}
.logo {
  font-weight: 700;
  letter-spacing: -0.04em;
  font-size: 1.05rem;
  color: var(--ink);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.logo:hover { color: var(--ink); }
.logo-mark {
  width: 1.35rem;
  height: 1.35rem;
  flex-shrink: 0;
}
.chip {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  border: 1px solid var(--line);
  background: var(--card);
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
  white-space: nowrap;
}

/* Page */
.page { padding: 1.15rem 0 3rem; }

.hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.95rem;
  margin: 0 0 1.35rem;
  text-align: left;
  align-items: start;
}
.hero-graphic {
  margin: 0;
  width: 100%;
}
.hero-graphic svg {
  width: 100%;
  height: auto;
  display: block;
  font-family: var(--sans);
}
.hero-graphic .slab {
  transform-box: fill-box;
  transform-origin: 0px 50%;
  animation: hero-grow 0.95s cubic-bezier(0.22, 1, 0.36, 1) both;
}
.hero-graphic .s2 { animation-delay: 0.12s; }
.hero-graphic .s3 { animation-delay: 0.24s; }
.hero-graphic .s4 { animation-delay: 0.36s; }
.hero-graphic .lab {
  animation: hero-fade 0.4s ease 0.5s both;
}
@keyframes hero-grow {
  from { transform: scaleX(0.12); }
  to { transform: scaleX(1); }
}
@keyframes hero-fade {
  from { opacity: 0; }
  to { opacity: 1; }
}
.hero-copy {
  text-align: left;
  max-width: 28rem;
}
.eyebrow {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 0.5rem;
}
h1 {
  font-family: var(--sans);
  font-weight: 700;
  font-size: clamp(1.55rem, 4.2vw, 2.2rem);
  line-height: 1.12;
  letter-spacing: -0.045em;
  margin: 0 0 0.5rem;
  text-align: left;
}
.lede {
  font-size: 1rem;
  color: var(--muted);
  max-width: 28rem;
  margin: 0;
  line-height: 1.45;
  text-align: left;
}

.field-mark {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  display: block;
}

/* Calculator shell */
.calc-shell {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.85rem;
  align-items: start;
  margin: 0 0 1.5rem;
}

.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.1rem 1.15rem 1.2rem;
}

.panel h2 {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 0.95rem;
}

.field {
  display: grid;
  gap: 0.28rem;
  margin-bottom: 0.9rem;
}
.field:last-of-type { margin-bottom: 0.2rem; }

.label-row {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 600;
  font-size: 0.875rem;
  letter-spacing: -0.01em;
}

.hint {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 400;
  line-height: 1.4;
  margin: 0;
}

.tip-wrap { position: relative; display: inline-flex; }
.tip-btn {
  width: 1.15rem;
  height: 1.15rem;
  border-radius: 99px;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 700;
  cursor: help;
  padding: 0;
  line-height: 1;
  font-family: inherit;
}
.tip-btn:hover,
.tip-btn:focus-visible {
  border-color: var(--accent);
  color: var(--accent-ink);
}
.tip-bubble {
  display: none;
  position: absolute;
  left: 50%;
  top: calc(100% + 8px);
  transform: translateX(-30%);
  z-index: 5;
  width: 15.5rem;
  background: var(--ink);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 500;
  line-height: 1.4;
  padding: 0.5rem 0.6rem;
  border-radius: var(--radius-sm);
}
.tip-wrap:hover .tip-bubble,
.tip-wrap:focus-within .tip-bubble,
.tip-btn[aria-expanded="true"] + .tip-bubble {
  display: block;
}

.input-wrap {
  display: flex;
  align-items: stretch;
  width: 100%;
  max-width: 36rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #fff;
}
.input-wrap:hover { border-color: #c5cad3; }
.input-wrap:focus-within {
  border-color: var(--accent);
  outline: none;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.18);
}
.input-wrap .affix {
  display: flex;
  align-items: center;
  padding: 0 0.7rem;
  color: var(--muted);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  font-size: 0.95rem;
}
.input-wrap input {
  font: inherit;
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  padding: 0.7rem 0.75rem 0.7rem 0;
  border: 0;
  background: transparent;
  color: var(--ink);
  width: 100%;
  max-width: 36rem;
  min-width: 0;
  border-radius: var(--radius-sm);
}
.input-wrap input:focus { outline: none; }
.input-wrap input::-webkit-outer-spin-button,
.input-wrap input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.input-wrap input[type="number"] { -moz-appearance: textfield; appearance: textfield; }

.reset {
  margin-top: 0.95rem;
  background: none;
  border: 0;
  padding: 0;
  font: inherit;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--accent-ink);
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 0.16em;
}
.reset:hover { color: var(--accent); }

/* Output */
.out { display: grid; gap: 0.85rem; }

.empty-state {
  display: none;
}
.empty-state img {
  width: min(100%, 20rem);
  height: auto;
}
.empty-state p {
  margin: 0.45rem 0 0;
  color: var(--muted);
  font-size: 0.875rem;
  max-width: 22rem;
}
.out.is-empty .empty-state { display: block; }
.out.is-empty #waterfall { display: none; }


.rate-block {
  background: var(--keep-bg);
  border: 1px solid var(--keep-line);
  border-radius: var(--radius);
  padding: 1rem 1.05rem 1.05rem;
}
.rate-block .kicker {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--keep);
  margin: 0 0 0.25rem;
}
.rate {
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
  font-size: clamp(2.2rem, 7vw, 3.05rem);
  font-weight: 750;
  letter-spacing: -0.05em;
  color: var(--keep);
  line-height: 1;
}
.rate-unit {
  font-size: 1rem;
  font-weight: 650;
  letter-spacing: -0.03em;
  color: var(--keep);
  margin-left: 0.15rem;
}
.rate-sub {
  margin: 0.45rem 0 0;
  color: var(--muted);
  font-size: 0.8125rem;
}

.waterfall-panel { padding-bottom: 0.9rem; }

.waterfall {
  width: 100%;
  max-width: 36rem;
  height: auto;
  overflow: visible;
}
.waterfall .bar {
  transition: x 160ms ease, width 160ms ease;
}
.waterfall .trap {
  transition: d 160ms ease;
}
.waterfall text {
  font-family: var(--sans);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
  pointer-events: none;
}

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

.formula {
  margin: 0.65rem 0 0;
  padding: 0.7rem 0.8rem;
  background: var(--bg-band);
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  line-height: 1.45;
  color: var(--muted);
}
.formula strong {
  color: var(--ink);
  font-weight: 650;
  font-variant-numeric: tabular-nums;
}
.formula code {
  font-family: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;
  font-size: 0.72rem;
  color: var(--ink);
}

.day-block {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.5rem;
}
.day-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  padding: 0.8rem 0.95rem;
}
.day-card .kicker {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 0.15rem;
}
.day-card .n {
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
  font-size: 1.45rem;
  font-weight: 750;
  letter-spacing: -0.04em;
  line-height: 1.15;
}
.day-card .n.order {
  font-size: 1.05rem;
  font-weight: 650;
  letter-spacing: -0.03em;
}
.day-card .note {
  margin: 0.25rem 0 0;
  font-size: 0.78rem;
  color: var(--muted);
}

/* Kit CTA */
.kit {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.15rem 1.15rem 1.2rem;
  margin: 0 0 1.25rem;
}
.kit h2 {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin: 0 0 0.35rem;
}
.kit > p {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 0.95rem;
  max-width: 40rem;
}
.trades {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.55rem;
}
.trade {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 0.85rem 0.95rem;
  background: #fff;
  font-weight: 650;
  letter-spacing: -0.02em;
}
.trade:hover {
  border-color: var(--ink);
  color: var(--ink);
}
.trade .go {
  color: var(--accent-ink);
  font-size: 0.8125rem;
  font-weight: 650;
  white-space: nowrap;
}
.kit-meta {
  margin: 0.9rem 0 0 !important;
  font-size: 0.8125rem !important;
}

/* Fine print / footer */
.fine {
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.5;
  max-width: 42rem;
  margin: 0 0 1.25rem;
}
.site-footer {
  border-top: 1px solid var(--line);
  padding: 1rem 0 0.25rem;
  color: var(--muted);
  font-size: 0.78rem;
}
.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
  justify-content: space-between;
}
.site-footer p { margin: 0; }
.site-footer a { color: var(--muted); text-decoration: none; }
.site-footer a:hover { color: var(--ink); }

.noscript {
  margin: 0 0 1rem;
  padding: 0.75rem 0.9rem;
  background: var(--fee-bg);
  border: 1px solid #fecdd3;
  border-radius: var(--radius);
  color: var(--ink);
  font-size: 0.875rem;
}

@media (min-width: 720px) {
  .trades {
    grid-template-columns: repeat(3, 1fr);
  }
  .trade {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.35rem;
    min-height: 5.2rem;
  }
}

@media (min-width: 880px) {
  .hero {
    grid-template-columns: minmax(0, 1.55fr) minmax(17.5rem, 0.85fr);
    gap: 1.5rem 2rem;
    align-items: center;
    margin: 0 0 1.6rem;
  }
  .hero-copy { max-width: 22rem; }
  .calc-shell {
    grid-template-columns: minmax(16.5rem, 22rem) minmax(0, 1fr);
    gap: 1rem;
  }
  .day-block {
    grid-template-columns: 1fr 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .waterfall .bar,
  .waterfall .trap { transition: none; }
  .hero-graphic .slab,
  .hero-graphic .lab { animation: none; }
}