/* =========================================================
   Small Footprint Fitness — design tokens
   Palette: cool paper + blueprint navy + measuring-tape yellow + sage
   Type: Space Grotesk (display/UI) + Source Serif 4 (body) + IBM Plex Mono (specs)
   ========================================================= */

:root {
  --paper: #EDEAE2;
  --paper-alt: #E3DFD1;
  --white: #FAF9F5;
  --ink: #1C1B17;
  --ink-soft: #55523F;
  --navy: #16213A;
  --navy-soft: #263752;
  --line: #B8B2A0;
  --line-soft: #D8D3C3;
  --yellow: #F2B705;
  --sage: #3E6259;
  --sage-soft: #E4EAE3;

  --font-display: "Space Grotesk", sans-serif;
  --font-body: "Source Serif 4", Georgia, serif;
  --font-mono: "IBM Plex Mono", monospace;

  --max: 1080px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--sage); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--navy); }

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--navy);
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin: 0 0 0.5em;
}

h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); font-weight: 700; }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 700; margin-top: 2.4em; }
h3 { font-size: 1.2rem; font-weight: 700; }

p { margin: 0 0 1.1em; }

.mono {
  font-family: var(--font-mono);
  letter-spacing: -0.01em;
}

.eyebrow {
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.72rem;
  color: var(--sage);
  font-weight: 500;
}

/* ---------- ruler divider (signature structural device) ---------- */
.ruler {
  height: 14px;
  background-image: repeating-linear-gradient(
    to right,
    var(--line) 0,
    var(--line) 1px,
    transparent 1px,
    transparent 24px
  );
  background-position: bottom;
  background-repeat: repeat-x;
  background-size: 100% 8px;
  border-bottom: 1px solid var(--line);
  margin: 0;
}
.ruler.tall { height: 20px; background-size: 100% 12px; }

/* ---------- header ---------- */
.site-header {
  background: var(--navy);
  color: var(--paper);
  padding: 18px 0;
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 3px solid var(--yellow);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--white);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  text-decoration: none;
}
.logo:hover { color: var(--yellow); }
.logo-mark { flex-shrink: 0; }
.logo small {
  display: block;
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--line-soft);
}
.nav-links {
  display: flex;
  gap: 24px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
}
.nav-links a { color: var(--paper); text-decoration: none; }
.nav-links a:hover { color: var(--yellow); }

@media (max-width: 560px) {
  .site-header .wrap { flex-wrap: wrap; row-gap: 10px; }
  .logo small { display: none; }
  .nav-links { gap: 16px; font-size: 0.76rem; }
  .footprint-gauge { flex-wrap: wrap; }
  .gauge-label { white-space: normal; }
}

/* ---------- hero ---------- */
.hero {
  padding: 64px 0 40px;
}
.hero .eyebrow { margin-bottom: 14px; display: inline-block; }
.hero h1 { max-width: 15ch; }
.hero .lede {
  max-width: 56ch;
  font-size: 1.15rem;
  color: var(--ink-soft);
}

/* ---------- footprint gauge (signature element) ---------- */
.footprint-gauge {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 14px 0;
}
.gauge-track {
  position: relative;
  flex: 1;
  max-width: 220px;
  height: 8px;
  background: var(--line-soft);
  border: 1px solid var(--line);
}
.gauge-fill {
  position: absolute;
  top: -1px; bottom: -1px; left: -1px;
  width: var(--pct, 20%);
  background: var(--yellow);
  border: 1px solid var(--ink);
  border-right: 2px solid var(--ink);
}
.gauge-label {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--ink-soft);
  white-space: nowrap;
}
.gauge-label b { color: var(--ink); }
.gauge-scale {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--ink-soft);
  display: flex;
  justify-content: space-between;
  max-width: 220px;
  margin-top: 2px;
}

/* ---------- card grid ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  margin: 36px 0;
}
@media (max-width: 820px) {
  .grid { grid-template-columns: 1fr; }
}

.card {
  background: var(--white);
  border: 1px solid var(--line);
  padding: 26px;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: var(--ink);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: 4px 4px 0 var(--navy);
}
.card .icon { margin-bottom: 14px; }
.card h3 { color: var(--navy); margin-bottom: 8px; }
.card p { color: var(--ink-soft); font-size: 0.98rem; flex: 1; }
.card .tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--sage);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 12px;
}

/* ---------- sections ---------- */
.section { padding: 20px 0; }
.section.alt { background: var(--paper-alt); }
.section.navy { background: var(--navy); color: var(--paper); }
.section.navy h2 { color: var(--white); }
.section.navy a { color: var(--yellow); }
.section.navy .gauge-track { background: var(--navy-soft); border-color: #4A5A78; }
.section.navy .gauge-label { color: var(--paper); }
.section.navy .gauge-label b { color: var(--yellow); }

.callout {
  border: 1px solid var(--line);
  border-left: 4px solid var(--sage);
  background: var(--sage-soft);
  padding: 18px 22px;
  margin: 24px 0;
  font-size: 0.98rem;
}
.callout.yellow { border-left-color: var(--yellow); background: #FBF2D6; }
.callout p:last-child { margin-bottom: 0; }
.callout .eyebrow { display: block; margin-bottom: 6px; }

/* ---------- product block (article pages) ---------- */
.product {
  border: 1px solid var(--line);
  background: var(--white);
  padding: 28px;
  margin: 28px 0;
}
.product-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  flex-wrap: wrap;
  border-bottom: 1px dashed var(--line);
  padding-bottom: 12px;
  margin-bottom: 16px;
}
.product-head h3 { margin: 0; font-size: 1.3rem; }
.product-price {
  font-family: var(--font-mono);
  color: var(--navy);
  font-size: 1rem;
  white-space: nowrap;
}
.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  margin: 16px 0;
}
.spec-table td { padding: 6px 10px 6px 0; border-bottom: 1px solid var(--line-soft); vertical-align: top; }
.spec-table td:first-child { color: var(--ink-soft); width: 40%; }
.pros-cons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin: 18px 0;
}
@media (max-width: 600px) { .pros-cons { grid-template-columns: 1fr; } }
.pros-cons div { font-size: 0.95rem; }
.pros-cons .label { font-family: var(--font-mono); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--ink-soft); margin-bottom: 6px; display: block;}
.pros-cons ul { margin: 0; padding-left: 1.1em; }
.pros-cons li { margin-bottom: 4px; }

.btn {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--white);
  background: var(--navy);
  border: 1px solid var(--navy);
  padding: 10px 18px;
  text-decoration: none;
  margin-top: 8px;
}
.btn:hover { background: var(--sage); border-color: var(--sage); color: var(--white); }

/* ---------- quick-picks table on article top ---------- */
.quickpicks {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 0.92rem;
}
.quickpicks th, .quickpicks td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
}
.quickpicks th {
  font-family: var(--font-mono);
  text-transform: uppercase;
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
  border-bottom: 2px solid var(--ink);
}
.quickpicks tr:hover td { background: var(--paper-alt); }

/* ---------- faq ---------- */
.faq dt { font-family: var(--font-display); font-weight: 700; color: var(--navy); margin-top: 20px; }
.faq dd { margin: 6px 0 0; color: var(--ink-soft); }

/* ---------- footer ---------- */
.site-footer {
  background: var(--navy);
  color: var(--line-soft);
  padding: 40px 0 30px;
  margin-top: 60px;
  font-size: 0.88rem;
}
.site-footer a { color: var(--paper); }
.footer-grid {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--navy-soft);
  margin-bottom: 18px;
}
.footer-links { display: flex; gap: 18px; flex-wrap: wrap; font-family: var(--font-mono); font-size: 0.78rem; }

/* ---------- article prose ---------- */
.article-body { max-width: 74ch; }
.article-body p { color: var(--ink); }
.byline {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-soft);
  margin-bottom: 30px;
}

/* breadcrumb */
.crumb {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--ink-soft);
  padding-top: 20px;
}
.crumb a { color: var(--ink-soft); }