/* Birdie Bank — golf tools & rules section. Shared static styles.
   Mobile-first, accessible, no framework. Brand palette mirrors index.html. */
:root {
  --green-dark: #1a4a2e;
  --green-bright: #3a8c3f;
  --gold: #d4a017;
  --cream: #f7f6f2;
  --white: #ffffff;
  --text: #1a1a1a;
  --muted: #5a6a5e;
  --pale-green: #eef4ec;
  --border: #e2e6dd;
  --radius: 14px;
  --shadow: 0 6px 20px rgba(26, 74, 46, 0.08);
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Lato', system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: var(--cream);
  line-height: 1.6;
  font-size: 17px;
}
h1, h2, h3, h4 { font-family: 'Nunito', system-ui, sans-serif; color: var(--green-dark); line-height: 1.2; }
h1 { font-size: clamp(1.7rem, 5vw, 2.5rem); font-weight: 900; margin: 0 0 .5rem; }
h2 { font-size: clamp(1.3rem, 4vw, 1.7rem); font-weight: 800; margin: 2rem 0 .75rem; }
h3 { font-size: 1.15rem; font-weight: 800; margin: 1.25rem 0 .4rem; }
a { color: var(--green-bright); }
p { margin: 0 0 1rem; }

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--green-dark); color: #fff; padding: 10px 16px; border-radius: 0 0 8px 0; z-index: 100;
}
.skip-link:focus { left: 0; }

.wrap { max-width: 760px; margin: 0 auto; padding: 0 20px; }

/* Header / nav */
.site-header { background: var(--green-dark); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; padding-top: 14px; padding-bottom: 14px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: #fff; text-decoration: none; font-family: 'Nunito', sans-serif; font-weight: 900; font-size: 1.15rem; }
.brand img { height: 30px; width: auto; border-radius: 6px; }
.site-header nav a { color: var(--cream); text-decoration: none; font-weight: 700; font-size: .95rem; margin-left: 18px; }
.site-header nav a:hover { color: #fff; text-decoration: underline; }

/* Breadcrumb */
.breadcrumb { font-size: .85rem; color: var(--muted); padding: 14px 0 0; }
.breadcrumb a { color: var(--muted); text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }

main { padding-bottom: 40px; }
.lede { font-size: 1.1rem; color: var(--muted); margin-bottom: 1.25rem; }

/* CTA block */
.cta {
  background: var(--green-dark);
  color: #fff;
  border-radius: var(--radius);
  padding: 26px 22px;
  margin: 32px 0;
  box-shadow: var(--shadow);
  text-align: center;
}
.cta h2 { color: #fff; margin-top: 0; }
.cta p { color: #e9f0e9; max-width: 52ch; margin: 0 auto 1.25rem; }
.store-buttons { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.store-btn {
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--gold); color: #1a1a1a; text-decoration: none;
  font-family: 'Nunito', sans-serif; font-weight: 800; font-size: 1rem;
  padding: 13px 20px; border-radius: 10px; min-height: 48px; flex: 1 1 200px;
}
.store-btn.secondary { background: #fff; color: var(--green-dark); }
.store-btn:hover { filter: brightness(1.05); }

/* FAQ */
.faq details {
  background: #fff; border: 1px solid var(--border); border-radius: 12px;
  padding: 14px 16px; margin-bottom: 10px;
}
.faq summary { font-family: 'Nunito', sans-serif; font-weight: 800; color: var(--green-dark); cursor: pointer; font-size: 1.02rem; }
.faq details[open] summary { margin-bottom: 8px; }

/* Index cards */
.card-grid { display: grid; grid-template-columns: 1fr; gap: 14px; margin: 18px 0; }
@media (min-width: 560px) { .card-grid { grid-template-columns: 1fr 1fr; } }
.card {
  display: block; background: #fff; border: 1px solid var(--border); border-radius: 12px;
  padding: 16px 18px; text-decoration: none; color: var(--text); box-shadow: var(--shadow);
}
.card:hover { border-color: var(--green-bright); }
.card .card-title { font-family: 'Nunito', sans-serif; font-weight: 800; color: var(--green-dark); display: block; margin-bottom: 4px; }
.card .card-sub { color: var(--muted); font-size: .92rem; }
.tag { display: inline-block; background: var(--pale-green); color: var(--green-dark); font-weight: 700; font-size: .72rem; padding: 2px 8px; border-radius: 999px; margin-left: 6px; vertical-align: middle; }

/* Related link */
.related { background: var(--pale-green); border-radius: 12px; padding: 14px 16px; margin: 24px 0; }
.related a { font-weight: 800; }

/* Calculator UI */
.calc { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; margin: 18px 0; box-shadow: var(--shadow); }
.calc-controls { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 14px; }
.field { display: flex; flex-direction: column; gap: 5px; }
.field label { font-weight: 700; font-size: .85rem; color: var(--green-dark); }
.field input, .field select {
  font: inherit; padding: 10px 12px; border: 1px solid var(--border); border-radius: 9px; background: #fff; min-height: 44px; min-width: 90px;
}
.field input:focus, .field select:focus { outline: 2px solid var(--green-bright); outline-offset: 1px; }
.calc table { width: 100%; border-collapse: collapse; font-size: .92rem; }
.calc th, .calc td { padding: 7px 6px; text-align: center; border-bottom: 1px solid var(--border); }
.calc th { font-family: 'Nunito', sans-serif; color: var(--green-dark); font-size: .8rem; }
.calc td input { width: 56px; text-align: center; padding: 8px 4px; border: 1px solid var(--border); border-radius: 8px; min-height: 40px; font: inherit; }
.calc .name-input { width: 100%; max-width: 130px; }
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.btn {
  font-family: 'Nunito', sans-serif; font-weight: 800; font-size: 1rem;
  background: var(--green-bright); color: #fff; border: none; border-radius: 10px;
  padding: 13px 22px; min-height: 48px; cursor: pointer;
}
.btn:hover { filter: brightness(1.05); }
.btn.ghost { background: #fff; color: var(--green-dark); border: 1px solid var(--border); }
.btn-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 6px; }
.results { margin-top: 18px; }
.results.empty { display: none; }
.result-line { display: flex; justify-content: space-between; gap: 12px; padding: 9px 0; border-bottom: 1px solid var(--border); }
.result-line .who { font-weight: 700; }
.result-headline { font-family: 'Nunito', sans-serif; font-weight: 900; font-size: 1.15rem; color: var(--green-dark); margin-bottom: 8px; }
.pos { color: var(--green-bright); font-weight: 800; }
.neg { color: #c0392b; font-weight: 800; }
.muted-note { color: var(--muted); font-size: .85rem; margin-top: 10px; }
.dot { color: var(--gold); font-weight: 900; }

/* Footer */
.site-footer { background: var(--green-dark); color: var(--cream); padding: 30px 0; margin-top: 30px; font-size: .9rem; }
.site-footer a { color: var(--gold); text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }
.site-footer .wrap { display: flex; flex-wrap: wrap; gap: 14px; justify-content: space-between; align-items: center; }