/* ============================================================
   YARDSUM FIELD GUIDE — design tokens
   Palette: Canopy #16301F / Turf #3F7D44 / Flag orange #F26419
            Haze #EDF2EC / Ink #101F16 / Chalk #FBFDF9
   Type:    Bricolage Grotesque (display) · Source Serif 4 (body)
            IBM Plex Mono (measurements & labels)
   ============================================================ */

:root {
  --canopy: #16301F;
  --turf: #3F7D44;
  --turf-soft: #DCE9DA;
  --flag: #F26419;
  --haze: #EDF2EC;
  --ink: #101F16;
  --chalk: #FBFDF9;
  --line: rgba(16, 31, 22, 0.16);
  --measure: 70ch;
  --radius: 14px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--haze);
  color: var(--ink);
  font-family: "Source Serif 4", Georgia, serif;
  font-size: 1.1rem;
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
}

.mono {
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1, h2, h3, .display {
  font-family: "Bricolage Grotesque", "Arial Black", sans-serif;
  line-height: 1.08;
  letter-spacing: -0.015em;
  margin: 0;
}

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

/* ---------- survey grid backdrop ---------- */
.gridfield {
  background-image:
    linear-gradient(rgba(63,125,68,0.10) 1px, transparent 1px),
    linear-gradient(90deg, rgba(63,125,68,0.10) 1px, transparent 1px);
  background-size: 44px 44px;
}

/* ---------- masthead ---------- */
.masthead {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1.1rem clamp(1.2rem, 4vw, 3rem);
  border-bottom: 1px solid var(--line);
  background: var(--chalk);
}
.masthead .wordmark {
  font-family: "Bricolage Grotesque", sans-serif;
  font-weight: 800;
  font-size: 1.22rem;
  text-decoration: none;
}
.masthead .wordmark span { color: var(--turf); }
.masthead nav { display: flex; align-items: center; gap: 1.4rem; }
.masthead nav a.mono { text-decoration: none; color: var(--ink); opacity: 0.75; }
.masthead nav a.mono:hover { opacity: 1; color: var(--flag); }
.btn {
  display: inline-block;
  font-family: "Bricolage Grotesque", sans-serif;
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  background: var(--flag);
  color: var(--chalk);
  padding: 0.68rem 1.25rem;
  border-radius: 999px;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(242,100,25,0.35); }

/* ---------- hero (index) ---------- */
.hero {
  position: relative;
  background: var(--canopy);
  color: var(--chalk);
  padding: clamp(3.4rem, 8vw, 6.5rem) clamp(1.2rem, 4vw, 3rem) clamp(4.2rem, 9vw, 7rem);
  overflow: hidden;
}
.hero .eyebrow { color: #9CC49B; margin-bottom: 1.1rem; }
.hero h1 {
  font-size: clamp(2.5rem, 6.4vw, 4.6rem);
  font-weight: 800;
  max-width: 15ch;
}
.hero h1 em { font-style: normal; color: var(--flag); }
.hero p.lede {
  max-width: 46ch;
  font-size: 1.15rem;
  color: rgba(251,253,249,0.82);
  margin: 1.4rem 0 0;
}
.hero .tracing {
  position: absolute;
  right: clamp(-4rem, -1vw, 2rem);
  top: 50%;
  transform: translateY(-50%);
  width: clamp(260px, 34vw, 520px);
  opacity: 0.9;
  pointer-events: none;
}
.hero .plot-outline {
  fill: rgba(63,125,68,0.25);
  stroke: var(--flag);
  stroke-width: 2.5;
  stroke-dasharray: 9 7;
  animation: trace 26s linear infinite;
}
.hero .plot-vertex { fill: var(--chalk); stroke: var(--flag); stroke-width: 2; }
.hero .plot-label { font-family: "IBM Plex Mono", monospace; font-size: 13px; letter-spacing: 0.12em; fill: #BFD8BE; }
@keyframes trace { to { stroke-dashoffset: -640; } }
@media (max-width: 860px) { .hero .tracing { display: none; } }
@media (prefers-reduced-motion: reduce) {
  .hero .plot-outline { animation: none; }
  .btn, .parcel { transition: none !important; }
}

/* ---------- index: parcels ---------- */
.field {
  max-width: 1180px;
  margin: 0 auto;
  padding: clamp(2.6rem, 6vw, 4.6rem) clamp(1.2rem, 4vw, 3rem) 4.5rem;
}
.field-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  border-bottom: 2px solid var(--ink);
  padding-bottom: 0.85rem;
  margin-bottom: 2.2rem;
}
.field-head h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); font-weight: 800; }
.parcel-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.6rem; }
.parcel {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  background: var(--chalk);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.7rem 1.6rem 1.5rem;
  text-decoration: none;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.parcel::after {
  content: "";
  position: absolute;
  inset: 7px;
  border: 2px dashed transparent;
  border-radius: calc(var(--radius) - 5px);
  pointer-events: none;
  transition: border-color 0.18s ease;
}
.parcel:hover { transform: translateY(-5px); box-shadow: 0 16px 34px rgba(22,48,31,0.14); }
.parcel:hover::after { border-color: var(--flag); }
.parcel .stake {
  align-self: flex-start;
  background: var(--turf-soft);
  color: var(--canopy);
  padding: 0.32rem 0.7rem;
  border-radius: 999px;
}
.parcel h3 { font-size: 1.42rem; font-weight: 800; }
.parcel p { margin: 0; font-size: 1rem; color: rgba(16,31,22,0.78); }
.parcel .survey-line {
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px dashed var(--line);
  display: flex;
  justify-content: space-between;
  color: rgba(16,31,22,0.6);
}
.parcel .survey-line .go { color: var(--flag); }

/* ---------- article pages ---------- */
.article-hero {
  background: var(--canopy);
  color: var(--chalk);
  padding: clamp(3rem, 7vw, 5rem) clamp(1.2rem, 4vw, 3rem);
}
.article-hero .inner { max-width: 860px; margin: 0 auto; }
.article-hero .eyebrow { color: #9CC49B; }
.article-hero h1 { font-size: clamp(2rem, 5vw, 3.4rem); font-weight: 800; margin-top: 0.9rem; max-width: 22ch; }
.article-hero .survey-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.8rem;
  margin-top: 1.6rem;
  color: #BFD8BE;
}
.article-hero .survey-strip .dot { color: var(--flag); }

article.reading {
  max-width: var(--measure);
  margin: 0 auto;
  padding: clamp(2.4rem, 5vw, 3.6rem) 1.25rem 4rem;
}
article.reading h2 {
  font-size: 1.65rem;
  font-weight: 800;
  margin: 2.6rem 0 0.9rem;
  scroll-margin-top: 2rem;
}
article.reading h2::before {
  content: "▰ ";
  color: var(--flag);
  font-size: 0.8em;
}
article.reading p { margin: 0 0 1.15rem; }
article.reading a { color: var(--turf); font-weight: 600; text-decoration-color: rgba(63,125,68,0.4); }
article.reading a:hover { color: var(--flag); }
article.reading strong { color: var(--canopy); }
article.reading ol, article.reading ul { padding-left: 1.3rem; margin: 0 0 1.2rem; }
article.reading li { margin-bottom: 0.55rem; }
article.reading blockquote {
  margin: 1.8rem 0;
  padding: 1.1rem 1.4rem;
  background: var(--turf-soft);
  border-left: 4px solid var(--turf);
  border-radius: 0 10px 10px 0;
  font-style: italic;
}
article.reading table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.6rem 0;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.85rem;
  background: var(--chalk);
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
}
article.reading th {
  background: var(--canopy);
  color: var(--chalk);
  text-align: left;
  padding: 0.7rem 0.9rem;
  letter-spacing: 0.06em;
}
article.reading td { padding: 0.65rem 0.9rem; border-top: 1px solid var(--line); }
article.reading tr:nth-child(even) td { background: rgba(63,125,68,0.06); }

.formula {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.95rem;
  background: var(--canopy);
  color: #CFE6CE;
  padding: 1.15rem 1.3rem;
  border-radius: 10px;
  margin: 1.6rem 0;
  overflow-x: auto;
}
.formula .hl { color: var(--flag); }

/* CTA band inside articles */
.cta-band {
  margin: 2.8rem 0;
  padding: 1.8rem 1.7rem;
  background: var(--canopy);
  color: var(--chalk);
  border-radius: var(--radius);
  position: relative;
  overflow: hidden;
}
.cta-band::before {
  content: "";
  position: absolute;
  inset: 8px;
  border: 2px dashed rgba(242,100,25,0.65);
  border-radius: 9px;
  pointer-events: none;
}
.cta-band h3 { font-size: 1.35rem; font-weight: 800; margin-bottom: 0.5rem; }
.cta-band p { margin: 0 0 1.1rem; color: rgba(251,253,249,0.85); font-size: 1rem; }

/* FAQ */
.faq details {
  background: var(--chalk);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.9rem 1.15rem;
  margin-bottom: 0.7rem;
}
.faq summary {
  cursor: pointer;
  font-family: "Bricolage Grotesque", sans-serif;
  font-weight: 700;
  font-size: 1.02rem;
}
.faq details[open] summary { color: var(--turf); }
.faq details p { margin: 0.7rem 0 0.2rem; font-size: 1rem; }

/* footer */
footer.site {
  background: var(--canopy);
  color: rgba(251,253,249,0.75);
  padding: 2.4rem clamp(1.2rem, 4vw, 3rem);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
}
footer.site a { color: var(--chalk); }
footer.site .mono { color: #9CC49B; }