/* ==========================================================================
   Gravity Run Club — Blog
   Paleta e identidad tomadas del sitio principal (index.html)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Baloo+2:wght@500;600;700;800&family=Nunito:ital,wght@0,400;0,500;0,600;0,700;1,400&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root{
  --teal: #12C0AE;
  --teal-dark: #0B8F82;
  --blue-mid: #2E3AC0;
  --blue-deep: #1A1F6E;
  --amber: #F2A93B;
  --ink: #0B1024;
  --ink-soft: #5C6470;
  --paper: #F2F6F8;
  --paper-raised: #FFFFFF;
  --line: #E4E9ED;

  --font-display: 'Baloo 2', system-ui, sans-serif;
  --font-body: 'Nunito', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

*{ box-sizing: border-box; }

html{ scroll-behavior: smooth; }

body{
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

a{ color: inherit; }

.wrap{
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header ---------- */

.site-header{
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
  background: var(--paper-raised);
}

.site-header .wrap{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.wordmark{
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 22px;
  letter-spacing: 0.2px;
  text-decoration: none;
  background: linear-gradient(120deg, var(--blue-deep), var(--blue-mid) 55%, var(--teal));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.header-nav{
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 15px;
  font-weight: 600;
}

.header-nav a{ text-decoration: none; color: var(--ink-soft); }
.header-nav a:hover{ color: var(--blue-mid); }

.header-cta{
  background: var(--ink);
  color: #fff !important;
  padding: 10px 18px;
  border-radius: 8px;
  font-weight: 700;
}

/* ---------- Article scaffolding ---------- */

.article-hero{
  padding: 64px 0 40px;
}

.kicker{
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  color: var(--teal-dark);
  background: rgba(18,192,174,0.1);
  border: 1px solid rgba(18,192,174,0.25);
  padding: 5px 12px;
  border-radius: 999px;
  margin-bottom: 22px;
}

.article-hero h1{
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(32px, 4.4vw, 50px);
  line-height: 1.12;
  max-width: 16ch;
  margin: 0 0 20px;
  color: var(--ink);
}

.article-hero .dek{
  font-size: 19px;
  color: var(--ink-soft);
  max-width: 62ch;
  margin: 0;
}

.article-meta{
  display: flex;
  gap: 18px;
  align-items: center;
  margin-top: 28px;
  font-size: 14px;
  color: var(--ink-soft);
}

.coach-tag{
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  color: var(--ink);
}

.coach-dot{
  width: 34px; height: 34px;
  border-radius: 50%;
  background: linear-gradient(140deg, var(--blue-deep), var(--teal));
  flex-shrink: 0;
}

.article-body{
  max-width: 70ch;
  margin: 0 auto;
  padding: 8px 24px 20px;
}

.article-body h2{
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 27px;
  margin: 52px 0 16px;
  color: var(--ink);
}

.article-body h3{
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 20px;
  margin: 34px 0 12px;
  color: var(--ink);
}

.article-body p{ margin: 0 0 20px; color: var(--ink); }
.article-body p.lede{ font-size: 19px; color: var(--ink-soft); }

.article-body ul, .article-body ol{
  margin: 0 0 22px;
  padding-left: 22px;
}
.article-body li{ margin-bottom: 10px; }

.article-body strong{ color: var(--ink); }

/* pull quote used sparingly */
.pull{
  font-family: var(--font-display);
  font-size: 24px;
  line-height: 1.4;
  color: var(--blue-deep);
  border-left: 3px solid var(--teal);
  padding: 4px 0 4px 24px;
  margin: 40px 0;
}

/* ---------- HR zone ribbon diagram ---------- */

.zone-diagram{
  margin: 36px 0 8px;
  border: 1px solid var(--line);
  background: var(--paper-raised);
  border-radius: 16px;
  padding: 28px 24px 20px;
}

.zone-diagram-label{
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-soft);
  display: flex;
  justify-content: space-between;
  margin-bottom: 10px;
}

.zone-ribbon{
  display: flex;
  width: 100%;
  height: 76px;
  border-radius: 10px;
  overflow: hidden;
}

.zone-seg{
  flex: 1;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  color: #fff;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  line-height: 1;
}

.zone-seg .z-name{
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  line-height: 1;
}

.zone-legend{
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px,1fr));
  gap: 14px 20px;
}

.zone-legend-item{ font-size: 14px; color: var(--ink-soft); }
.zone-legend-item b{
  display: block;
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 15px;
}

/* ---------- Callout / CTA blocks ---------- */

.callout{
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 22px 24px;
  margin: 32px 0;
  font-size: 15.5px;
}

.callout .callout-label{
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--teal-dark);
  text-transform: none;
  margin-bottom: 8px;
  display: block;
}

.cta-block{
  margin: 56px 0 8px;
  padding: 40px 36px;
  border-radius: 20px;
  background: linear-gradient(135deg, var(--blue-deep), var(--blue-mid) 65%, var(--teal-dark));
  color: #fff;
}

.cta-block h3{
  font-family: var(--font-display);
  font-size: 24px;
  margin: 0 0 12px;
  color: #fff;
}

.cta-block p{
  color: rgba(255,255,255,0.88);
  max-width: 52ch;
  margin: 0 0 22px;
  font-size: 16px;
}

.cta-button{
  display: inline-block;
  background: #fff;
  color: var(--blue-deep) !important;
  font-weight: 700;
  padding: 13px 26px;
  border-radius: 9px;
  text-decoration: none;
  font-size: 15px;
}

.cta-button:hover{ background: var(--amber); color: var(--blue-deep) !important; }

/* ---------- Related / next reads ---------- */

.related{
  margin: 56px 0 40px;
  padding-top: 36px;
  border-top: 1px solid var(--line);
}

.related h4{
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-soft);
  margin: 0 0 18px;
  font-weight: 500;
}

.related-card{
  display: block;
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 20px;
  background: var(--paper-raised);
}

.related-card .r-kicker{
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--teal-dark);
  margin-bottom: 8px;
}

.related-card h5{
  font-family: var(--font-display);
  font-size: 18px;
  margin: 0 0 6px;
  color: var(--ink);
}

.related-card p{
  font-size: 14px;
  color: var(--ink-soft);
  margin: 0;
}

/* ---------- Footer ---------- */

.site-footer{
  border-top: 1px solid var(--line);
  padding: 32px 0;
  margin-top: 40px;
}

.site-footer .wrap{
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 14px;
  color: var(--ink-soft);
}

.site-footer a{ text-decoration: none; color: var(--ink-soft); font-weight: 600; }
.site-footer a:hover{ color: var(--teal-dark); }

/* ---------- Blog index ---------- */

.index-hero{
  padding: 56px 0 36px;
}

.index-hero h1{
  font-family: var(--font-display);
  font-size: clamp(30px, 4vw, 44px);
  margin: 0 0 14px;
}

.index-hero p{
  color: var(--ink-soft);
  max-width: 56ch;
  font-size: 17px;
  margin: 0;
}

.post-grid{
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 22px;
  padding-bottom: 60px;
}

.post-card{
  display: flex;
  flex-direction: column;
  text-decoration: none;
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 26px 24px;
}

.post-card .p-kicker{
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--teal-dark);
  margin-bottom: 12px;
}

.post-card h3{
  font-family: var(--font-display);
  font-size: 20px;
  margin: 0 0 10px;
  color: var(--ink);
}

.post-card p{
  font-size: 14.5px;
  color: var(--ink-soft);
  margin: 0;
  flex-grow: 1;
}

.post-card.is-soon{
  opacity: 0.55;
}

/* ---------- Responsive ---------- */

@media (max-width: 640px){
  .header-nav{ display: none; }
  .article-body{ padding: 0 20px; }
  .zone-legend{ grid-template-columns: repeat(2, 1fr); }
  .cta-block{ padding: 30px 24px; }
}