/* =========================================================
   Fitness2Sport — Design System
   Minimal modern, athletic. Light, spacious, energetic.
   ========================================================= */

:root {
  --bg: #ffffff;
  --bg-soft: #f5f6f4;
  --bg-ink: #0c0e0d;
  --ink: #0c0e0d;
  --ink-2: #3a3f3c;
  --muted: #71776f;
  --line: #e5e6e1;
  --accent: #ff5436;        /* energetic sunset-orange */
  --accent-2: #15b86a;      /* fresh green */
  --accent-soft: #fff0ec;

  --font-display: "Space Grotesk", "Segoe UI", system-ui, sans-serif;
  --font-body: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;

  --maxw: 1180px;
  --gutter: clamp(20px, 5vw, 64px);
  --radius: 14px;
  --radius-lg: 22px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: var(--font-body); font-size: 17px; line-height: 1.65;
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 600; line-height: 1.1; letter-spacing: -0.02em; margin: 0 0 0.5em; }
h1 { font-size: clamp(2.5rem, 6vw, 4.4rem); }
h2 { font-size: clamp(1.8rem, 4vw, 2.9rem); }
h3 { font-size: clamp(1.2rem, 2.2vw, 1.55rem); }
p { margin: 0 0 1.1em; color: var(--ink-2); }

.lead { font-size: clamp(1.1rem, 2vw, 1.38rem); color: var(--ink-2); line-height: 1.55; }
.eyebrow { font-family: var(--font-body); font-size: 0.78rem; font-weight: 600; letter-spacing: 0.18em; text-transform: uppercase; color: var(--accent); margin: 0 0 1.1rem; display: inline-block; }

.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: clamp(60px, 9vw, 120px); }
.section--soft { background: var(--bg-soft); }
.section--ink { background: var(--bg-ink); color: #f2f3f0; }
.section--ink p, .section--ink .lead { color: #b6bbb4; }

.grid { display: grid; gap: clamp(20px, 3vw, 36px); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.center { text-align: center; }
.measure { max-width: 720px; }
.measure-center { max-width: 720px; margin-inline: auto; }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: 0.55em; font-family: var(--font-body); font-weight: 600; font-size: 0.98rem; padding: 0.85em 1.5em; border-radius: 100px; border: 1px solid transparent; cursor: pointer; transition: transform 0.25s var(--ease), background 0.25s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease); }
.btn:hover { transform: translateY(-2px); }
.btn--primary { background: var(--ink); color: #fff; }
.btn--primary:hover { background: var(--accent); }
.btn--ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn--ghost:hover { border-color: var(--ink); }
.btn--light { background: #fff; color: var(--ink); }
.btn--light:hover { background: var(--accent); color: #fff; }
.arrow { transition: transform 0.25s var(--ease); }
.btn:hover .arrow { transform: translateX(3px); }

/* Header */
.site-header { position: sticky; top: 0; z-index: 50; backdrop-filter: saturate(180%) blur(14px); background: color-mix(in srgb, var(--bg) 82%, transparent); border-bottom: 1px solid var(--line); }
.nav { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { font-family: var(--font-display); font-weight: 700; font-size: 1.12rem; letter-spacing: -0.02em; display: flex; align-items: center; gap: 0.5em; }
.brand .dot { width: 11px; height: 11px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft); }
.nav-links { display: flex; align-items: center; gap: clamp(16px, 2.2vw, 30px); list-style: none; margin: 0; padding: 0; }
.nav-links a { font-size: 0.95rem; font-weight: 500; color: var(--ink-2); transition: color 0.2s; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--ink); }
.nav-cta { display: flex; align-items: center; gap: 14px; }
.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--ink); margin: 5px 0; transition: 0.3s var(--ease); }

/* Hero */
.hero { padding-block: clamp(64px, 11vw, 140px); }
.hero h1 { margin-bottom: 0.35em; }
.hero .lead { max-width: 620px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 2.2rem; }
.hero-meta { display: flex; flex-wrap: wrap; gap: clamp(28px, 5vw, 64px); margin-top: clamp(44px, 8vw, 84px); }
.hero-meta .stat strong { font-family: var(--font-display); font-size: clamp(1.8rem, 4vw, 2.6rem); display: block; line-height: 1; }
.hero-meta .stat span { font-size: 0.9rem; color: var(--muted); }

/* Cards */
.card { background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: clamp(24px, 3vw, 36px); transition: transform 0.3s var(--ease), border-color 0.3s var(--ease), box-shadow 0.3s var(--ease); }
.card:hover { transform: translateY(-4px); border-color: #d4d5cf; box-shadow: 0 24px 60px -32px rgba(12,14,13,0.28); }
.card .num { font-family: var(--font-display); font-size: 0.85rem; color: var(--accent); letter-spacing: 0.1em; }
.card h3 { margin-top: 0.6em; }
.card p { margin-bottom: 0; font-size: 0.98rem; }
.card--ink { background: #141715; border-color: #262a27; color: #f2f3f0; }
.card--ink p { color: #b6bbb4; }

/* Category pill */
.pill { display: inline-block; font-size: 0.74rem; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; color: var(--accent); background: var(--accent-soft); padding: 5px 12px; border-radius: 100px; }

/* Native ad / sponsored slot */
.ad-slot {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: clamp(16px, 3vw, 32px);
  background: linear-gradient(120deg, var(--accent-soft), #ffffff 62%, #eef7f1);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(20px, 3vw, 30px) clamp(22px, 3.2vw, 38px);
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.ad-slot:hover { transform: translateY(-3px); border-color: #f3cabf; box-shadow: 0 26px 60px -34px rgba(255,84,54,0.45); }
.ad-icon {
  width: 56px; height: 56px; flex: none;
  border-radius: 16px;
  background: var(--accent);
  color: #fff;
  display: grid; place-items: center;
  font-family: var(--font-display); font-weight: 700; font-size: 1.5rem;
  box-shadow: 0 10px 24px -10px rgba(255,84,54,0.6);
}
.ad-main { min-width: 0; }
.ad-label {
  display: inline-block;
  font-size: 0.66rem; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--muted);
  border: 1px solid var(--line); background: rgba(255,255,255,0.7);
  padding: 3px 9px; border-radius: 100px; margin-bottom: 0.5rem;
}
.ad-main h3 { margin: 0; font-size: clamp(1.1rem, 2.2vw, 1.45rem); color: var(--ink); }
.ad-cta {
  flex: none; display: inline-flex; align-items: center; gap: 0.5em;
  font-weight: 600; font-size: 0.96rem; color: #fff; background: var(--ink);
  padding: 0.7em 1.3em; border-radius: 100px; white-space: nowrap;
  transition: background 0.25s var(--ease);
}
.ad-slot:hover .ad-cta { background: var(--accent); }
.ad-slot:hover .ad-cta .arrow { transform: translateX(3px); }
@media (max-width: 720px) {
  .ad-slot { grid-template-columns: auto 1fr; row-gap: 18px; }
  .ad-cta { grid-column: 1 / -1; justify-content: center; }
}

/* Post cards */
.post-card { display: flex; flex-direction: column; height: 100%; }
.post-card .meta { font-size: 0.8rem; color: var(--muted); letter-spacing: 0.04em; text-transform: uppercase; }
.post-card h3 { margin: 0.7em 0 0.4em; font-size: 1.2rem; }
.post-card .more { margin-top: auto; font-weight: 600; color: var(--accent); font-size: 0.95rem; }
.post-thumb { aspect-ratio: 16/10; border-radius: var(--radius); margin-bottom: 1.2rem; display: grid; place-items: center; border: 1px solid var(--line); background: linear-gradient(135deg, var(--accent-soft), #fff 55%, #eef7f1); }
.post-thumb span { font-family: var(--font-display); font-weight: 700; font-size: clamp(1.6rem, 4vw, 2.4rem); color: var(--ink); opacity: 0.14; letter-spacing: -0.03em; }

/* Article */
.article { max-width: 760px; margin-inline: auto; }
.article h2 { margin-top: 1.7em; }
.article h3 { margin-top: 1.3em; }
.article p, .article li { color: var(--ink-2); }
.article ul, .article ol { padding-left: 1.2em; }
.article li { margin-bottom: 0.5em; }
.article blockquote { margin: 1.6em 0; padding: 0.4em 0 0.4em 1.4em; border-left: 3px solid var(--accent); font-family: var(--font-display); font-size: 1.3rem; line-height: 1.4; color: var(--ink); }
.article-head { border-bottom: 1px solid var(--line); padding-bottom: 2rem; margin-bottom: 2.4rem; }
.article img, .article .post-thumb { margin: 1.6em 0; }
.callout { background: var(--bg-soft); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.2em 1.4em; margin: 1.6em 0; }
.callout p:last-child { margin-bottom: 0; }
.toc { background: var(--bg-soft); border-radius: var(--radius); padding: 1.2em 1.4em; margin: 0 0 2rem; }
.toc h4 { margin: 0 0 0.6em; font-family: var(--font-body); font-size: 0.78rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); }
.toc ul { margin: 0; padding-left: 1.1em; }
.toc a { color: var(--ink-2); }
.toc a:hover { color: var(--accent); }

/* Steps */
.steps { counter-reset: step; }
.step { display: grid; grid-template-columns: auto 1fr; gap: 22px; padding: 24px 0; border-top: 1px solid var(--line); }
.step:last-child { border-bottom: 1px solid var(--line); }
.step .idx { font-family: var(--font-display); font-size: 0.9rem; color: var(--accent); font-weight: 600; padding-top: 4px; }
.step h3 { margin-bottom: 0.3em; }
.step p { margin-bottom: 0; }

/* Forms */
.form { display: grid; gap: 20px; }
.field { display: grid; gap: 7px; }
.field label { font-size: 0.88rem; font-weight: 600; }
.field input, .field textarea, .field select { font-family: var(--font-body); font-size: 1rem; padding: 0.85em 1em; border: 1px solid var(--line); border-radius: 12px; background: var(--bg); color: var(--ink); transition: border-color 0.2s, box-shadow 0.2s; }
.field input:focus, .field textarea:focus, .field select:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft); }
.field textarea { resize: vertical; min-height: 140px; }

/* CTA band */
.cta-band { text-align: center; }
.cta-band h2 { max-width: 16ch; margin-inline: auto; }

/* Footer */
.site-footer { background: var(--bg-ink); color: #c6cbc4; padding-block: clamp(56px, 8vw, 90px) 40px; }
.footer-top { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; }
.site-footer .brand { color: #fff; margin-bottom: 1rem; }
.footer-col h4 { font-family: var(--font-body); font-size: 0.78rem; letter-spacing: 0.14em; text-transform: uppercase; color: #7d837a; margin-bottom: 1rem; }
.footer-col ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.7rem; }
.footer-col a { color: #c6cbc4; font-size: 0.96rem; transition: color 0.2s; }
.footer-col a:hover { color: #fff; }
.footer-bottom { display: flex; flex-wrap: wrap; gap: 16px; justify-content: space-between; align-items: center; margin-top: clamp(40px, 6vw, 64px); padding-top: 28px; border-top: 1px solid #262a27; font-size: 0.85rem; color: #7d837a; }

/* Reveal */
[data-reveal] { opacity: 0; transform: translateY(22px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
[data-reveal].is-visible { opacity: 1; transform: none; }

.divider { height: 1px; background: var(--line); border: 0; margin: 0; }
.mt-0 { margin-top: 0; } .mb-0 { margin-bottom: 0; }

/* Responsive */
@media (max-width: 860px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  body { font-size: 16px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 28px; }
  .nav-links, .nav-cta .btn { display: none; }
  .nav-toggle { display: block; }
  .nav-links.open { display: flex; flex-direction: column; align-items: flex-start; position: absolute; top: 72px; left: 0; right: 0; background: var(--bg); border-bottom: 1px solid var(--line); padding: 20px var(--gutter) 28px; gap: 18px; }
}
@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; }
  [data-reveal] { opacity: 1; transform: none; transition: none; }
  .btn:hover, .card:hover { transform: none; }
}