/* ═════════════════════════════════════════════════════════════════════
   Vagus public site · shared styles
   Light-first. Dark sections opt in via the .surface-dark class, which
   locally re-declares the surface/text tokens. Brand tokens (indigo /
   violet / emerald / ruby / amber) stay identical across both surfaces.
   ═════════════════════════════════════════════════════════════════════ */

:root {
  /* Surfaces — light defaults */
  --bg:        #ffffff;
  --bg-2:      #f8fafc;
  --card:      #ffffff;
  --card-2:    #f1f5f9;
  --card-3:    #e2e8f0;
  --border:    #e2e8f0;
  --border-2:  #cbd5e1;

  /* Vagus brand — unchanged across light/dark */
  --indigo:        #6366F1;
  --indigo-deep:   #4F46E5;
  --indigo-bright: #4338CA;   /* deepened for WCAG AA legibility on light bg */
  --violet:        #8B5CF6;
  --violet-deep:   #7C3AED;
  --indigo-tint:   rgba(99,102,241,0.10);
  --indigo-glow:   rgba(99,102,241,0.18);

  /* Semantic */
  --emerald: #10b981;
  --emerald-tint: rgba(16,185,129,0.12);
  --ruby: #ef4444;
  --amber: #f59e0b;
  --amber-tint: rgba(245,158,11,0.12);

  /* Text */
  --heading: #0f172a;
  --body:    #334155;
  --muted:   #64748b;
  --muted-2: #94a3b8;

  /* Shadows scoped to light surfaces */
  --shadow-card:    0 1px 2px rgba(15,23,42,0.04), 0 8px 24px -12px rgba(15,23,42,0.08);
  --shadow-card-hv: 0 1px 2px rgba(15,23,42,0.05), 0 18px 40px -16px rgba(15,23,42,0.12);
  --shadow-mock:    0 24px 64px -16px rgba(15,23,42,0.18), 0 0 0 1px rgba(99,102,241,0.15);
}

/* Opt-in dark surface (dashboard mock, final CTA, footer, mobile drawer). */
.surface-dark {
  --bg:        #0a0e14;
  --bg-2:      #0f141c;
  --card:      #131820;
  --card-2:    #1a2030;
  --card-3:    #222a3c;
  --border:    #2a3142;
  --border-2:  #3a4356;

  --indigo-bright: #818CF8;  /* original bright — pops on dark bg */

  --heading: #ffffff;
  --body:    #cbd5e1;
  --muted:   #94a3b8;
  --muted-2: #5b6477;

  --shadow-card:    0 1px 2px rgba(0,0,0,0.4), 0 8px 24px -12px rgba(0,0,0,0.5);
  --shadow-card-hv: 0 1px 2px rgba(0,0,0,0.5), 0 18px 40px -16px rgba(0,0,0,0.6);
  --shadow-mock:    0 24px 64px -16px rgba(0,0,0,0.6), 0 0 0 1px rgba(99,102,241,0.15);

  background: var(--bg);
  color: var(--body);
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  background: var(--bg);
  color: var(--body);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: 'cv02', 'cv11', 'tnum';
  line-height: 1.55;
}
body { overflow-x: hidden; }
.tnum { font-variant-numeric: tabular-nums; }

a { color: inherit; text-decoration: none; }

/* ── Container ─────────────────────────────────────── */
.container { max-width: 1240px; margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: 880px; margin: 0 auto; padding: 0 24px; }

/* ── Top nav (shared across all pages) ─────────────── */
.site-nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,0.78);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  border-bottom: 1px solid var(--border);
}
.site-nav-inner {
  display: flex; align-items: center; gap: 32px;
  height: 64px;
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  font-weight: 700; font-size: 18px; color: var(--heading);
  letter-spacing: -0.025em;
}
.brand svg { color: var(--indigo); }
.site-nav nav { display: flex; align-items: center; gap: 2px; }
.site-nav nav a {
  padding: 8px 14px; font-size: 14px; color: var(--muted);
  border-radius: 8px; font-weight: 500;
  transition: color 140ms, background 140ms;
}
.site-nav nav a:hover { color: var(--heading); background: rgba(15,23,42,0.04); }
.site-nav nav a.active { color: var(--heading); }
.site-nav-right { margin-left: auto; display: flex; align-items: center; gap: 8px; }

/* ── Buttons ────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 40px; padding: 0 18px;
  border-radius: 10px;
  font-size: 14px; font-weight: 600;
  cursor: pointer; border: 1px solid transparent;
  transition: background 140ms, border-color 140ms, transform 60ms, box-shadow 140ms;
  font-family: inherit;
}
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: linear-gradient(180deg, var(--indigo) 0%, var(--indigo-deep) 100%);
  color: white;
  box-shadow: 0 1px 0 0 rgba(255,255,255,0.18) inset, 0 6px 20px rgba(79,70,229,0.30);
}
.btn-primary:hover {
  background: linear-gradient(180deg, #818CF8 0%, var(--indigo) 100%);
  box-shadow: 0 1px 0 0 rgba(255,255,255,0.20) inset, 0 10px 28px rgba(79,70,229,0.38);
}

.btn-ghost {
  background: transparent;
  color: var(--body);
  border-color: var(--border);
}
.btn-ghost:hover { background: rgba(15,23,42,0.04); border-color: var(--border-2); }
.surface-dark .btn-ghost:hover { background: rgba(255,255,255,0.05); }

.btn-soft {
  background: var(--card-2);
  color: var(--heading);
  border-color: var(--border);
}
.btn-soft:hover { background: var(--card-3); }

.btn-lg { height: 48px; padding: 0 22px; font-size: 15px; border-radius: 12px; }
.btn-sm { height: 32px; padding: 0 12px; font-size: 12.5px; border-radius: 8px; }

/* ── Pill / chip ────────────────────────────────────── */
.pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 12px;
  font-size: 11.5px; font-weight: 600;
  letter-spacing: 0.04em;
  border-radius: 999px;
  background: var(--indigo-tint);
  border: 1px solid rgba(99,102,241,0.30);
  color: var(--indigo-deep);
}
.surface-dark .pill { color: var(--indigo-bright); }
.pill-emerald { background: var(--emerald-tint); border-color: rgba(16,185,129,0.30); color: #047857; }
.surface-dark .pill-emerald { color: var(--emerald); }
.pill-amber   { background: var(--amber-tint);   border-color: rgba(245,158,11,0.30);  color: #b45309; }
.surface-dark .pill-amber { color: var(--amber); }

/* ── Section scaffolding ────────────────────────────── */
.section { padding: 96px 0; position: relative; }
.section-sm { padding: 64px 0; }
.section-xs { padding: 40px 0; }

.eyebrow {
  display: inline-block;
  font-size: 11px; font-weight: 700; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--indigo-deep);
  margin-bottom: 14px;
}
.surface-dark .eyebrow { color: var(--indigo-bright); }

h1.display, .display {
  font-size: clamp(36px, 5.6vw, 64px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
  color: var(--heading);
  margin: 0;
}
h2.h2, .h2 {
  font-size: clamp(28px, 3.6vw, 44px);
  font-weight: 700;
  letter-spacing: -0.022em;
  line-height: 1.1;
  color: var(--heading);
  margin: 0;
}
h3.h3, .h3 {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--heading);
  margin: 0;
}
.sub {
  font-size: 17px; line-height: 1.6;
  color: var(--muted);
  max-width: 620px;
}
.sub-sm { font-size: 15px; color: var(--muted); max-width: 540px; }

/* Brand gradient text — used for hero accent line. Tuned so it stays
   legible on both white and dark backgrounds. */
.gradient-text {
  background: linear-gradient(135deg, var(--indigo) 0%, var(--violet-deep) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.surface-dark .gradient-text {
  background: linear-gradient(135deg, var(--indigo-bright) 0%, var(--violet) 100%);
  -webkit-background-clip: text;
  background-clip: text;
}

/* ── Cards ──────────────────────────────────────────── */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
  box-shadow: var(--shadow-card);
  transition: border-color 200ms, box-shadow 200ms, transform 200ms;
}
.card:hover {
  border-color: var(--border-2);
  box-shadow: var(--shadow-card-hv);
}

.card-glow {
  background: linear-gradient(180deg, rgba(99,102,241,0.06), transparent 60%),
              var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow-card);
}

/* ── Footer ─────────────────────────────────────────── */
.site-footer {
  background: var(--bg-2);
  border-top: 1px solid var(--border);
  padding: 64px 0 32px;
}
.site-footer.surface-dark { background: var(--bg); }
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
}
.footer-col h4 {
  font-size: 12px; font-weight: 700; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--muted-2);
  margin: 0 0 14px;
}
.footer-col ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.footer-col a { font-size: 14px; color: var(--muted); transition: color 140ms; }
.footer-col a:hover { color: var(--heading); }

.footer-bottom {
  margin-top: 56px; padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  font-size: 13px; color: var(--muted-2);
}

/* ── Glow backgrounds ───────────────────────────────── */
.glow-hero {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 900px 400px at 50% -100px, rgba(99,102,241,0.18), transparent 65%),
    radial-gradient(ellipse 600px 300px at 90% 30%, rgba(139,92,246,0.10), transparent 65%);
  pointer-events: none;
}
.surface-dark .glow-hero {
  background:
    radial-gradient(ellipse 900px 400px at 50% -100px, rgba(99,102,241,0.22), transparent 60%),
    radial-gradient(ellipse 600px 300px at 90% 30%, rgba(124,58,237,0.14), transparent 60%);
}

.bg-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(15,23,42,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15,23,42,0.04) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 50% at 50% 0%, black, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 80% 50% at 50% 0%, black, transparent 70%);
  pointer-events: none;
}
.surface-dark .bg-grid {
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
}

/* ── Final CTA accent — premium gradient band ──────── */
.cta-band {
  position: relative;
  overflow: hidden;
}
.cta-band::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 800px 360px at 30% 0%, rgba(99,102,241,0.28), transparent 60%),
    radial-gradient(ellipse 700px 320px at 80% 100%, rgba(139,92,246,0.22), transparent 60%);
  pointer-events: none;
}
.cta-band > * { position: relative; }

/* ── Layout grids — class-based so media queries can override ── */
.hero-section { padding-top: 120px; }

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 64px;
  align-items: center;
}

.hero-mockup-outer { position: relative; overflow: hidden; }

.hero-mockup-card {
  transform: perspective(1400px) rotateY(-6deg) rotateX(2deg);
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

/* ── Horizontal scroll track (coach strip, etc.) ───── */
.coach-scroll-track { scrollbar-width: none; -ms-overflow-style: none; }
.coach-scroll-track::-webkit-scrollbar { display: none; }

/* ── Utility ────────────────────────────────────────── */
.divider { height: 1px; background: var(--border); margin: 0; }
.text-emerald { color: var(--emerald); }
.text-amber   { color: var(--amber); }
.text-indigo  { color: var(--indigo-deep); }
.surface-dark .text-indigo { color: var(--indigo-bright); }
.text-muted   { color: var(--muted); }
.text-muted-2 { color: var(--muted-2); }
.text-heading { color: var(--heading); }

/* ── Interior page heroes ───────────────────────────── */
.page-hero { padding-top: 88px; }

/* ── Feature page: 2-col split sections ─────────────── */
.feature-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

/* ── Feature page: 3-col smart-layers grid ───────────── */
.features-3col {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

/* ── Coach list grid ─────────────────────────────────── */
.coaches-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

/* ── Coach detail: profile + sticky sidebar ──────────── */
.coach-detail-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 48px;
  align-items: flex-start;
}
.coach-cta-sticky { position: sticky; top: 100px; }

/* ── Pricing plans grid ──────────────────────────────── */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

/* ── Money-back guarantee strip ──────────────────────── */
.guarantee-strip {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 24px;
  align-items: center;
}

/* ── Responsive ─────────────────────────────────────── */
@media (max-width: 880px) {
  .site-nav nav { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .section { padding: 64px 0; }
  .section-sm { padding: 48px 0; }

  /* Home hero: collapse to single column, remove perspective tilt */
  .hero-section { padding-top: 72px; }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-mockup-card { transform: none; }

  /* Home page grids */
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonials-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }

  /* Interior page heroes */
  .page-hero { padding-top: 64px; }

  /* Feature split sections → 1 col */
  .feature-split { grid-template-columns: 1fr; gap: 36px; }

  /* Coach list: 3 → 2 cols */
  .coaches-grid { grid-template-columns: repeat(2, 1fr); }

  /* Coach detail: sidebar flows below main content */
  .coach-detail-grid { grid-template-columns: 1fr; gap: 40px; }
  .coach-cta-sticky { position: static; }

  /* Pricing: 3 → 1 col */
  .pricing-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  /* Home problem/steps/testimonials → 1 col */
  .problem-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; }

  /* Feature 3-col smart layers → 1 col */
  .features-3col { grid-template-columns: 1fr; }

  /* Coach list: 2 → 1 col */
  .coaches-grid { grid-template-columns: 1fr; }

  /* h3 slightly smaller */
  h3.h3, .h3 { font-size: 17px; }
}

@media (max-width: 560px) {
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; gap: 12px; }
}

@media (max-width: 480px) {
  /* Hide login/CTA buttons from nav bar — available in hamburger drawer */
  .site-nav-right { display: none; }
  .site-nav-inner { gap: 16px; }

  /* Tighten top padding on all hero types */
  .hero-section { padding-top: 48px; }
  .page-hero { padding-top: 48px; }

  /* Guarantee strip: icon stacks above text */
  .guarantee-strip { grid-template-columns: 1fr; }
}