/* ============================================================
   GymRhythm landing site — shared stylesheet
   Brand: dark graphite page, orange accent, cream "paper" cards
   (matches the App Store screenshot art direction)
   ============================================================ */

:root {
  --bg: #0d1310;            /* near-black green-tinted graphite */
  --bg-raise: #141b17;      /* raised panels on dark */
  --ink-on-dark: #f5f2ea;   /* cream text on dark */
  --muted-on-dark: #a8b0a9; /* secondary text on dark */
  --paper: #f4f0e6;         /* cream card */
  --paper-soft: #ece7da;
  --ink: #16130d;           /* graphite text on paper */
  --ink-soft: #5c584e;
  --accent: #f98a1b;        /* brand orange */
  --accent-deep: #e0740a;
  --line-dark: #232b26;
  --line-paper: #ddd6c6;
  --radius: 20px;
  --radius-sm: 12px;
  --shadow-glow: 0 0 80px rgba(249, 138, 27, .18);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink-on-dark);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px; }
.wrap-narrow { max-width: 760px; margin: 0 auto; padding: 0 20px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(13, 19, 16, .86);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid var(--line-dark);
}
.site-header .wrap {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 800; font-size: 18px; letter-spacing: -.3px;
  color: var(--ink-on-dark);
}
.brand:hover { text-decoration: none; }
.brand img { width: 32px; height: 32px; border-radius: 8px; }
.site-nav { display: flex; align-items: center; gap: 22px; font-size: 15px; }
.site-nav a { color: var(--muted-on-dark); font-weight: 500; }
.site-nav a:hover { color: var(--ink-on-dark); text-decoration: none; }
@media (max-width: 640px) { .site-nav a:not(.btn) { display: none; } }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  background: linear-gradient(180deg, var(--accent), var(--accent-deep));
  color: #1a1206 !important;
  font-weight: 800; font-size: 16px; letter-spacing: -.2px;
  padding: 14px 26px; border-radius: 14px;
  box-shadow: 0 6px 24px rgba(249, 138, 27, .35);
  transition: transform .15s ease, box-shadow .15s ease;
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 10px 30px rgba(249, 138, 27, .45); text-decoration: none; }
.btn-sm { padding: 9px 18px; font-size: 14px; border-radius: 11px; box-shadow: 0 3px 14px rgba(249, 138, 27, .3); }
.btn-ghost {
  display: inline-block; padding: 13px 24px; border-radius: 14px;
  border: 1px solid var(--line-dark); color: var(--ink-on-dark) !important;
  font-weight: 700; font-size: 16px; background: var(--bg-raise);
}
.btn-ghost:hover { border-color: var(--accent); text-decoration: none; }
.cta-note { font-size: 13px; color: var(--muted-on-dark); margin-top: 10px; }

/* ---------- Hero ---------- */
.hero { padding: 72px 0 40px; }
.hero-grid {
  display: grid; grid-template-columns: 1.15fr .85fr;
  gap: 48px; align-items: center;
}
@media (max-width: 820px) { .hero-grid { grid-template-columns: 1fr; } }
.hero h1 {
  font-size: clamp(34px, 5.4vw, 54px);
  line-height: 1.08; letter-spacing: -1.5px; font-weight: 850;
}
.hero h1 em, .accent { color: var(--accent); font-style: normal; }
.hero .sub {
  margin: 18px 0 28px; font-size: 19px; color: var(--muted-on-dark);
  max-width: 34em;
}
.hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }
.hero-points { margin: 26px 0 0; list-style: none; display: grid; gap: 10px; font-size: 15.5px; }
.hero-points li { padding-left: 26px; position: relative; color: var(--ink-on-dark); }
.hero-points li::before {
  content: "✓"; position: absolute; left: 0; top: 0;
  color: var(--accent); font-weight: 800;
}
.phone-shot {
  width: min(340px, 78vw); margin: 0 auto;
  border-radius: 28px;
  box-shadow: var(--shadow-glow), 0 24px 60px rgba(0,0,0,.5);
}

/* ---------- Sections ---------- */
section { padding: 64px 0; }
.section-dark { background: var(--bg); }
.section-raise { background: var(--bg-raise); border-top: 1px solid var(--line-dark); border-bottom: 1px solid var(--line-dark); }
.kicker {
  display: inline-block; font-size: 13px; font-weight: 800;
  letter-spacing: .12em; text-transform: uppercase; color: var(--accent);
  margin-bottom: 12px;
}
h2.section-title {
  font-size: clamp(26px, 3.6vw, 38px); letter-spacing: -.8px;
  line-height: 1.15; font-weight: 850; margin-bottom: 12px;
}
.section-sub { color: var(--muted-on-dark); font-size: 17px; max-width: 40em; }

/* ---------- How it works ---------- */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 40px; }
@media (max-width: 760px) { .steps { grid-template-columns: 1fr; } }
.step {
  background: var(--paper); color: var(--ink);
  border-radius: var(--radius); padding: 28px 24px;
}
.step .num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border-radius: 50%;
  background: var(--accent); color: #1a1206; font-weight: 800;
  margin-bottom: 14px;
}
.step h3 { font-size: 19px; letter-spacing: -.3px; margin-bottom: 8px; }
.step p { color: var(--ink-soft); font-size: 15.5px; }

/* ---------- Feature rows ---------- */
.feature-row {
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px;
  align-items: center; padding: 40px 0;
}
@media (max-width: 820px) { .feature-row { grid-template-columns: 1fr; } .feature-row.flip .feature-media { order: -1; } }
.feature-row.flip .feature-media { order: -1; }
@media (max-width: 820px) { .feature-row .feature-media { order: -1; } }
.feature-copy h3 { font-size: clamp(22px, 3vw, 30px); letter-spacing: -.6px; margin-bottom: 10px; }
.feature-copy p { color: var(--muted-on-dark); font-size: 16.5px; }
.feature-media img { width: min(300px, 70vw); margin: 0 auto; border-radius: 24px; box-shadow: 0 18px 50px rgba(0,0,0,.45); }

/* ---------- Screenshot strip ---------- */
.shots {
  display: grid; grid-auto-flow: column; gap: 18px;
  overflow-x: auto; padding: 10px 4px 22px;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}
.shots img {
  width: 240px; border-radius: 20px; scroll-snap-align: start;
  box-shadow: 0 14px 40px rgba(0,0,0,.4);
}

/* ---------- Guide cards ---------- */
.guide-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 18px; margin-top: 36px; }
.guide-card {
  display: block; background: var(--bg-raise);
  border: 1px solid var(--line-dark); border-radius: var(--radius-sm);
  padding: 22px 22px 20px; color: var(--ink-on-dark);
  transition: border-color .15s ease, transform .15s ease;
}
.guide-card:hover { border-color: var(--accent); transform: translateY(-2px); text-decoration: none; }
.guide-card h3 { font-size: 17px; letter-spacing: -.3px; margin-bottom: 8px; line-height: 1.3; }
.guide-card p { font-size: 14.5px; color: var(--muted-on-dark); }
.guide-card .more { display: inline-block; margin-top: 12px; font-size: 14px; font-weight: 700; color: var(--accent); }

/* ---------- FAQ ---------- */
.faq { max-width: 760px; margin: 36px auto 0; display: grid; gap: 12px; }
.faq details {
  background: var(--bg-raise); border: 1px solid var(--line-dark);
  border-radius: var(--radius-sm); padding: 0 20px;
}
.faq details[open] { border-color: #3a453e; }
.faq summary {
  cursor: pointer; list-style: none; font-weight: 700; font-size: 16.5px;
  padding: 18px 30px 18px 0; position: relative; letter-spacing: -.2px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: 0; top: 50%;
  transform: translateY(-50%); color: var(--accent);
  font-size: 22px; font-weight: 600;
}
.faq details[open] summary::after { content: "–"; }
.faq .faq-body { padding: 0 0 18px; color: var(--muted-on-dark); font-size: 15.5px; }
.faq .faq-body a { font-weight: 700; }

/* ---------- Final CTA band ---------- */
.cta-band { text-align: center; padding: 84px 0; }
.cta-band h2 { font-size: clamp(28px, 4vw, 42px); letter-spacing: -1px; margin-bottom: 14px; }
.cta-band p { color: var(--muted-on-dark); font-size: 17px; margin-bottom: 28px; }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--line-dark);
  padding: 44px 0 56px; font-size: 14px; color: var(--muted-on-dark);
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 32px; }
@media (max-width: 700px) { .footer-grid { grid-template-columns: 1fr; } }
.site-footer h4 { color: var(--ink-on-dark); font-size: 14px; margin-bottom: 12px; letter-spacing: .04em; text-transform: uppercase; }
.site-footer ul { list-style: none; display: grid; gap: 8px; }
.site-footer a { color: var(--muted-on-dark); }
.site-footer a:hover { color: var(--ink-on-dark); }
.footer-legal { margin-top: 36px; padding-top: 20px; border-top: 1px solid var(--line-dark); font-size: 13px; }

/* ============================================================
   Guide / article pages
   ============================================================ */
.article-hero { padding: 56px 0 8px; }
.breadcrumbs { font-size: 13.5px; color: var(--muted-on-dark); margin-bottom: 18px; }
.breadcrumbs a { color: var(--muted-on-dark); }
.article-hero h1 { font-size: clamp(30px, 4.6vw, 44px); line-height: 1.12; letter-spacing: -1.2px; font-weight: 850; max-width: 20em; }
.article-hero .lede { margin-top: 16px; font-size: 18.5px; color: var(--muted-on-dark); max-width: 36em; }
.article-meta { margin-top: 14px; font-size: 13.5px; color: var(--muted-on-dark); }

.prose { padding: 28px 0 40px; font-size: 17px; }
.prose h2 { font-size: clamp(22px, 3vw, 28px); letter-spacing: -.5px; margin: 44px 0 14px; line-height: 1.2; }
.prose h3 { font-size: 19px; letter-spacing: -.3px; margin: 30px 0 10px; }
.prose p { margin: 0 0 16px; color: #d8dcd4; }
.prose strong { color: var(--ink-on-dark); }
.prose ul, .prose ol { margin: 0 0 16px 22px; color: #d8dcd4; display: grid; gap: 8px; }
.prose img { border-radius: 20px; margin: 26px auto; width: min(300px, 75vw); box-shadow: 0 18px 50px rgba(0,0,0,.45); }
.prose table { width: 100%; border-collapse: collapse; margin: 20px 0; font-size: 15.5px; }
.prose th, .prose td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line-dark); }
.prose th { color: var(--ink-on-dark); }
.prose td { color: #d8dcd4; }
.prose blockquote {
  border-left: 3px solid var(--accent); padding: 4px 0 4px 18px;
  margin: 20px 0; color: var(--muted-on-dark);
}

/* In-article app bridge card */
.app-bridge {
  background: var(--paper); color: var(--ink);
  border-radius: var(--radius); padding: 26px 26px 24px;
  margin: 36px 0;
  display: grid; grid-template-columns: 56px 1fr; gap: 18px; align-items: start;
}
.app-bridge img { width: 56px; height: 56px; border-radius: 14px; margin: 0; box-shadow: none; }
.app-bridge h3 { margin: 0 0 6px; font-size: 18px; }
.app-bridge p { color: var(--ink-soft); font-size: 15px; margin: 0 0 14px; }
.app-bridge .btn { font-size: 15px; padding: 11px 20px; }
@media (max-width: 520px) { .app-bridge { grid-template-columns: 1fr; } }

/* Related guides */
.related { padding: 8px 0 56px; }
.related h2 { font-size: 22px; letter-spacing: -.4px; margin-bottom: 6px; }