/* GearSizeChart design system. Sport palettes set per page with <body data-sport="...">. */
:root {
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --display: "Avenir Next", "Helvetica Neue", -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --bg: #f5f7fa; --surface: #ffffff; --ink: #14202c; --muted: #4f5d6b; --line: #dfe5ec;
  --accent: #c94e0a; --accent-ink: #ffffff; --accent-hover: #a63f06;   /* one accent for buttons, site-wide */
  --sport: #1d5f94; --sport-deep: #0f3f66; --sport-soft: #e4f0fa; --sport-tint: #f0f6fc; --sport-ink: #ffffff;
  --grad: linear-gradient(135deg, #0f3f66 0%, #2a7cc2 55%, #8fd0f5 100%);
  --radius: 16px; --radius-sm: 10px;
  --shadow: 0 1px 2px rgba(20, 32, 44, .05), 0 10px 30px rgba(20, 32, 44, .07);
  --shadow-sm: 0 1px 2px rgba(20, 32, 44, .06);
  --fail: #a3322a; --fail-soft: #f8e5e3; --warn-soft: #fbf3dc;
}
body[data-sport="snow"]  { --sport: #1d5f94; --sport-deep: #0f3f66; --sport-soft: #e2eff9; --sport-tint: #eef5fb; --grad: linear-gradient(135deg, #0f3f66 0%, #2a7cc2 55%, #a9dcf8 100%); }
body[data-sport="bike"]  { --sport: #2a7a3b; --sport-deep: #1b5128; --sport-soft: #e3f3e6; --sport-tint: #eef8f0; --grad: linear-gradient(135deg, #1b5128 0%, #3a9a4e 55%, #b8e8c0 100%); }
body[data-sport="ball"]  { --sport: #a8381f; --sport-deep: #6f2414; --sport-soft: #fbe7e0; --sport-tint: #fdf2ee; --grad: linear-gradient(135deg, #6f2414 0%, #c94a2a 55%, #f5c3ad 100%); }
body[data-sport="golf"]  { --sport: #3d7a2a; --sport-deep: #26521a; --sport-soft: #e7f3e0; --sport-tint: #f1f8ec; --grad: linear-gradient(135deg, #26521a 0%, #4f9a36 55%, #c8e9b4 100%); }
body[data-sport="skate"] { --sport: #6b3fa0; --sport-deep: #44286a; --sport-soft: #ede5f8; --sport-tint: #f4effb; --grad: linear-gradient(135deg, #44286a 0%, #7f52c0 55%, #d6c3f2 100%); }
@media (prefers-color-scheme: dark) {
  :root { --bg: #0f1419; --surface: #171d24; --ink: #e8edf2; --muted: #9aa8b6; --line: #2a333d; --shadow: 0 1px 2px rgba(0,0,0,.4), 0 10px 30px rgba(0,0,0,.35); --shadow-sm: 0 1px 2px rgba(0,0,0,.4); --fail: #f0948b; --fail-soft: #3a2220; --warn-soft: #3a3320; }
  body[data-sport="snow"], body { --sport: #6fb4e8; --sport-deep: #cfe8fb; --sport-soft: #1b3045; --sport-tint: #152433; }
  body[data-sport="bike"]  { --sport: #7fd090; --sport-deep: #d4f3da; --sport-soft: #1c3322; --sport-tint: #16281b; }
  body[data-sport="ball"]  { --sport: #f0957a; --sport-deep: #fbd9cd; --sport-soft: #3c2219; --sport-tint: #2e1a14; }
  body[data-sport="golf"]  { --sport: #9ad47f; --sport-deep: #def3d2; --sport-soft: #1f3318; --sport-tint: #182814; }
  body[data-sport="skate"] { --sport: #b893ea; --sport-deep: #e6d8f8; --sport-soft: #2c2140; --sport-tint: #211a30; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.6 var(--font); }
a { color: var(--sport); }
.wrap { max-width: 960px; margin: 0 auto; padding: 0 20px; }

/* Header */
header.site { background: var(--surface); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 5; }
header.site .wrap { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 22px; padding-top: 14px; padding-bottom: 14px; }
.brand { font-family: var(--display); font-weight: 800; font-size: 1.25rem; color: var(--ink); text-decoration: none; letter-spacing: -0.02em; display: inline-flex; align-items: center; gap: 8px; }
.brand svg { width: 26px; height: 26px; }
.brand span { color: var(--sport); }
nav.main { display: flex; flex-wrap: wrap; gap: 2px 4px; font-size: 0.92rem; }
nav.main a { text-decoration: none; color: var(--muted); padding: 8px 10px; border-radius: 999px; line-height: 1.3; }
nav.main a:hover { color: var(--sport); background: var(--sport-tint); }
nav.main a[aria-current="page"] { color: var(--sport); background: var(--sport-soft); font-weight: 600; }

main { padding: 28px 0 56px; }
h1 { font-family: var(--display); font-size: 2.1rem; line-height: 1.12; margin: 0 0 10px; letter-spacing: -0.025em; font-weight: 800; }
h2 { font-family: var(--display); font-size: 1.4rem; line-height: 1.25; margin: 44px 0 12px; letter-spacing: -0.015em; font-weight: 700; }
h3 { font-size: 1.08rem; margin: 24px 0 8px; font-weight: 700; }
.lede { color: var(--muted); margin: 0 0 24px; font-size: 1.1rem; max-width: 46em; }
.crumbs { font-size: 0.88rem; line-height: 2; color: var(--muted); margin-bottom: 12px; }
.crumbs a { color: var(--muted); text-decoration: none; }
.crumbs a:hover { color: var(--sport); }
.eyebrow { display: inline-block; font-size: 0.78rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--sport); margin-bottom: 8px; }

/* Hero (hub pages) */
.hero { position: relative; border-radius: var(--radius); overflow: hidden; background: var(--grad); color: #fff; margin: 4px 0 28px; box-shadow: var(--shadow); min-height: 240px; display: grid; }
.hero img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(10,30,50,.72) 0%, rgba(10,30,50,.35) 60%, rgba(10,30,50,0) 100%); }
.hero .copy { position: relative; z-index: 1; padding: 36px 32px; max-width: 34em; align-self: center; }
.hero h1 { color: #fff; margin-bottom: 8px; }
.hero p { margin: 0; font-size: 1.08rem; color: rgba(255,255,255,.9); }
.hero .eyebrow { color: rgba(255,255,255,.85); }

/* Cards and forms */
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; margin: 18px 0; box-shadow: var(--shadow); }
.calc { display: grid; grid-template-columns: 1fr; gap: 18px; }
.calc .inputs { min-width: 0; }
.calc .figure { display: flex; align-items: center; justify-content: center; min-height: 190px; background: var(--sport-tint); border-radius: var(--radius-sm); padding: 10px; }
.calc .figure svg { width: 100%; max-width: 280px; max-height: 420px; height: auto; display: block; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 14px 16px; }
.field { display: flex; flex-direction: column; gap: 5px; min-width: 0; }
.field label { font-size: 0.82rem; font-weight: 700; color: var(--muted); letter-spacing: 0.01em; }
.field small { color: var(--muted); font-size: 0.8rem; }
input, select { font: inherit; font-size: 16px; color: var(--ink); background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 10px 12px; width: 100%; min-width: 0; }
input:focus, select:focus { outline: 2px solid var(--sport); outline-offset: 1px; border-color: var(--sport); }
.pair { display: flex; gap: 6px; }
.pair input { flex: 1 1 64px; min-width: 64px; }
.pair select { flex: 0 0 auto; width: auto; }
.section-label { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); margin: 18px 0 8px; font-weight: 700; }

/* Result panel */
.result { margin-top: 20px; }
.panel { background: var(--sport-soft); border-radius: var(--radius-sm); padding: 20px 22px; display: grid; gap: 4px; }
.panel .label { font-size: 0.78rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--sport); }
.panel .big { font-family: var(--display); font-size: 3rem; font-weight: 800; line-height: 1; letter-spacing: -0.03em; color: var(--sport-deep); }
.panel .big small { font-size: 1.1rem; font-weight: 600; color: var(--muted); letter-spacing: 0; margin-left: 6px; }
.panel .range { font-size: 1.05rem; font-weight: 600; color: var(--ink); }
.panel .why { color: var(--muted); font-size: 0.95rem; margin-top: 6px; }
.panel .tag { display: inline-block; background: var(--surface); color: var(--sport); font-weight: 700; font-size: 0.85rem; padding: 3px 10px; border-radius: 999px; margin-top: 6px; width: max-content; box-shadow: var(--shadow-sm); }
.panel.fail { background: var(--fail-soft); } .panel.fail .big { color: var(--fail); }
.empty { color: var(--muted); font-size: 0.95rem; margin: 0; }
.detail { font-size: 0.92rem; color: var(--muted); padding-left: 20px; margin: 14px 0 0; }
.detail li { margin: 5px 0; }
.detail strong { color: var(--ink); }

/* Tables */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--surface); box-shadow: var(--shadow-sm); }
table { border-collapse: collapse; width: 100%; font-size: 0.92rem; }
th, td { padding: 9px 12px; text-align: left; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { font-size: 0.76rem; color: var(--muted); font-weight: 700; background: var(--sport-tint); position: sticky; top: 0; text-transform: uppercase; letter-spacing: 0.04em; }
tr:last-child td { border-bottom: 0; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
table.chart td, table.chart th { text-align: center; }
table.chart td:first-child, table.chart th:first-child { text-align: left; }
tr.hit td { background: var(--sport-soft); font-weight: 600; color: var(--sport-deep); }
table td { white-space: normal; }
table.chart td { white-space: nowrap; }
table.chart td:last-child { white-space: normal; min-width: 10em; }

.notice { background: var(--warn-soft); border-radius: var(--radius-sm); padding: 12px 14px; font-size: 0.92rem; margin: 16px 0; }
.source { font-size: 0.85rem; color: var(--muted); border-top: 1px solid var(--line); margin-top: 36px; padding-top: 14px; }
.source ul { margin: 6px 0 0; padding-left: 18px; }

/* Tiles */
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 14px; margin: 18px 0; }
.tile { display: block; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 18px 16px; text-decoration: none; color: var(--ink); box-shadow: var(--shadow-sm); transition: transform .15s, box-shadow .15s, border-color .15s; }
.tile:hover { transform: translateY(-2px); box-shadow: var(--shadow); border-color: var(--sport); }
.tile svg { width: 36px; height: 36px; display: block; margin-bottom: 10px; color: var(--sport); }
.tile strong { display: block; color: var(--sport); margin-bottom: 3px; font-size: 1.02rem; }
.tile span { font-size: 0.9rem; color: var(--muted); }
details { margin: 8px 0; }
summary { cursor: pointer; font-weight: 600; padding: 6px 0; }
.faq h3 { margin-top: 20px; }
.hide { display: none !important; }

/* Shop cards */
.shop { margin: 24px 0; }
.shop h2 { margin: 0 0 4px; font-size: 1.25rem; }
.shop > p { margin: 0 0 14px; color: var(--muted); font-size: 0.95rem; }
.shop .cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; }
.pcard { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-sm); display: flex; flex-direction: column; }
.pcard .img { aspect-ratio: 4 / 3; background: var(--grad); opacity: .85; display: grid; place-items: center; color: #fff; }
.pcard .img svg { width: 44%; height: auto; opacity: .9; }
.pcard .img img { width: 100%; height: 100%; object-fit: cover; }
.pcard .body { padding: 12px 12px 14px; display: grid; gap: 6px; }
.pcard .store { font-weight: 700; font-size: 0.95rem; }
.pcard .q { font-size: 0.85rem; color: var(--muted); }
.btn { display: inline-block; background: var(--accent); color: var(--accent-ink); text-decoration: none; padding: 9px 14px; border-radius: 999px; font-weight: 700; font-size: 0.92rem; text-align: center; transition: background .15s; }
.btn:hover { background: var(--accent-hover); }
.btn.alt { background: var(--sport-soft); color: var(--sport); }
.shop small { display: block; margin-top: 10px; color: var(--muted); font-size: 0.82rem; }
.ad { margin: 24px 0; text-align: center; }
.print-btn { font: inherit; font-size: 0.82rem; background: var(--surface); border: 1px solid var(--line); border-radius: 999px; padding: 5px 12px; color: var(--muted); cursor: pointer; margin-left: 10px; vertical-align: middle; }
.print-btn:hover { color: var(--sport); border-color: var(--sport); }

/* Footer */
footer.site { border-top: 1px solid var(--line); background: var(--surface); font-size: 0.85rem; color: var(--muted); }
footer.site .wrap { padding-top: 22px; padding-bottom: 28px; }
footer.site a { color: var(--muted); margin-right: 16px; display: inline-block; padding: 6px 0; }
footer.site p { margin: 6px 0; }

@media (min-width: 680px) {
  .calc { grid-template-columns: 1fr 260px; align-items: stretch; }
  .calc .figure { min-height: 0; }
  .hero { min-height: 300px; }
  .hero .copy { padding: 44px 40px; }
}
@media (max-width: 520px) {
  h1 { font-size: 1.6rem; } h2 { font-size: 1.22rem; }
  .card { padding: 16px; }
  .panel .big { font-size: 2.4rem; }
  th, td { padding: 7px 9px; }
  .hero .copy { padding: 26px 20px; }
}
@media print {
  header.site, footer.site, form.card, .shop, .ad, .tiles, .print-btn, nav, .crumbs, .hero { display: none !important; }
  body { background: #fff; color: #000; font-size: 12px; }
  .table-wrap { border: 0; overflow: visible; box-shadow: none; }
  th { position: static; }
  a { color: #000; text-decoration: none; }
  main { padding: 0; }
}