/* ==========================================================================
   Cashless Tips — Landing Page Styles
   --------------------------------------------------------------------------
   Structure:
   1. Design tokens (CSS custom properties)
   2. Base / reset
   3. Layout helpers (.container, .grid)
   4. Buttons & reusable components
   5. Site header & navigation
   6. Hero section
   7. How it works section
   8. Features section
   9. Mission section
   10. Testimonials section
   11. Call-to-action section
   12. Footer
   13. Responsive breakpoints
   ==========================================================================
   Colour palette (from the brand guide):
   - Teal   #1FA7A2   primary brand colour, used for emphasis & CTAs
   - Black  #000000   body text, strong contrast
   - White  #FFFFFF   space & clarity
   Typography: Inter (Google Fonts)
   ========================================================================== */


/* 1. DESIGN TOKENS
   --------------------------------------------------------------------------
   Change a value here once and it updates everywhere. */
:root {
  /* Brand colours */
  --color-teal: #1FA7A2;
  --color-teal-dark: #17857F;
  --color-teal-soft: #E9F7F6;
  --color-black: #000000;
  --color-ink: #111111;
  --color-muted: #5B6A6A;
  --color-line: #E5ECEC;
  --color-bg: #FFFFFF;
  --color-cream: #FAFBFB;

  /* Type scale — fluid, scales with viewport */
  --fs-xs:   0.875rem;
  --fs-sm:   1rem;
  --fs-base: 1.0625rem;   /* 17px */
  --fs-md:   1.25rem;
  --fs-lg:   clamp(1.5rem, 1.2rem + 1.2vw, 2rem);
  --fs-xl:   clamp(1.9rem, 1.4rem + 2.4vw, 2.8rem);
  --fs-xxl:  clamp(2.4rem, 1.6rem + 4vw, 4.4rem);

  /* Spacing scale */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 3rem;
  --space-6: 4.5rem;
  --space-7: 6.5rem;

  /* Radii & shadows */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-pill: 999px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04), 0 2px 8px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 14px rgba(0,0,0,0.06), 0 12px 32px rgba(0,0,0,0.06);
  --shadow-teal: 0 10px 30px rgba(31,167,162,0.25);

  /* Layout */
  --container-max: 1180px;
  --container-pad: clamp(1rem, 4vw, 2rem);
}


/* 2. BASE / RESET
   -------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: var(--fs-base);
  line-height: 1.6;
  color: var(--color-ink);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--color-ink);
  margin: 0 0 var(--space-2);
}
h1 { font-size: var(--fs-xxl); font-weight: 800; }
h2 { font-size: var(--fs-xl); }
h3 { font-size: var(--fs-lg); }
h4 { font-size: var(--fs-md); }

p { margin: 0 0 var(--space-2); color: var(--color-ink); }

a { color: var(--color-teal-dark); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Accessibility: respect reduced motion + visible focus ring */
*:focus-visible {
  outline: 3px solid var(--color-teal);
  outline-offset: 3px;
  border-radius: 4px;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation: none !important; transition: none !important; }
}

.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}


/* 3. LAYOUT HELPERS
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-inline: var(--container-pad);
}

.section {
  padding-block: var(--space-6);
}
.section--tight { padding-block: var(--space-5); }

.section-eyebrow {
  display: inline-block;
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-teal-dark);
  margin-bottom: var(--space-2);
}

.section-header {
  max-width: 680px;
  margin: 0 auto var(--space-5);
  text-align: center;
}
.section-header p {
  color: var(--color-muted);
  font-size: var(--fs-md);
  text-wrap: pretty;
}


/* 4. BUTTONS
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.95rem 1.6rem;
  font-family: inherit;
  font-size: var(--fs-sm);
  font-weight: 600;
  line-height: 1;
  border-radius: var(--radius-pill);
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease;
  white-space: nowrap;
}
.btn:hover { text-decoration: none; transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: var(--color-teal);
  color: #fff;
  box-shadow: var(--shadow-teal);
}
.btn--primary:hover { background: var(--color-teal-dark); }

.btn--dark {
  background: var(--color-black);
  color: #fff;
}
.btn--dark:hover { background: #222; }

.btn--ghost {
  background: transparent;
  color: var(--color-ink);
  border-color: var(--color-line);
}
.btn--ghost:hover { border-color: var(--color-ink); }

.btn--on-dark {
  background: #fff;
  color: var(--color-black);
}

.btn--sm { padding: 0.6rem 1.1rem; font-size: var(--fs-xs); }


/* 5. SITE HEADER & NAV
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,0.9);
  backdrop-filter: saturate(180%) blur(10px);
  -webkit-backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--color-line);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
}
.site-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 800;
  font-size: 1.125rem;
  letter-spacing: -0.02em;
  color: var(--color-ink);
}
.site-logo:hover { text-decoration: none; }
.site-logo img {
  height: 56px;
  width: auto;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2.5vw, 2rem);
}
.site-nav__links {
  display: flex;
  gap: clamp(1rem, 2.5vw, 2rem);
  list-style: none;
  padding: 0; margin: 0;
}
.site-nav__links a {
  color: var(--color-ink);
  font-weight: 500;
  font-size: var(--fs-sm);
}
.site-nav__links a:hover { color: var(--color-teal-dark); text-decoration: none; }

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  background: none;
  border: 0;
  padding: 0.5rem;
  cursor: pointer;
}
.nav-toggle__bar {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-ink);
  margin: 5px 0;
  transition: transform 0.25s ease, opacity 0.25s ease;
}


/* 6. HERO
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  padding-block: var(--space-6) var(--space-7);
  overflow: hidden;
  background:
    radial-gradient(800px 400px at 85% -10%, rgba(31,167,162,0.18), transparent 60%),
    radial-gradient(600px 300px at -10% 110%, rgba(31,167,162,0.10), transparent 60%),
    var(--color-bg);
}
.hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
  align-items: center;
}
.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.9rem;
  background: var(--color-teal-soft);
  color: var(--color-teal-dark);
  border: 1px solid rgba(31,167,162,0.25);
  border-radius: var(--radius-pill);
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-bottom: var(--space-3);
}
.hero__eyebrow .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--color-teal);
  box-shadow: 0 0 0 4px rgba(31,167,162,0.2);
}
.hero h1 { margin-bottom: var(--space-3); text-wrap: balance; }
.hero h1 .accent { color: var(--color-teal); }
.hero__lede {
  font-size: var(--fs-md);
  color: var(--color-muted);
  max-width: 560px;
  text-wrap: pretty;
  margin-bottom: var(--space-4);
}
.hero__ctas {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}
.hero__proof {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-line);
}
.hero__proof div { min-width: 120px; }
.hero__proof strong {
  display: block;
  font-size: var(--fs-lg);
  font-weight: 800;
  color: var(--color-teal);
  line-height: 1;
  margin-bottom: 0.25rem;
}
.hero__proof span { color: var(--color-muted); font-size: var(--fs-xs); }

/* Hero visual — stylised phone showing a tip in progress */
.hero__visual {
  position: relative;
  justify-self: center;
  width: 100%;
  max-width: 420px;
}
.phone {
  position: relative;
  aspect-ratio: 9 / 18;
  background: #0a0a0a;
  border-radius: 38px;
  padding: 10px;
  box-shadow: 0 30px 60px rgba(0,0,0,0.18), 0 10px 24px rgba(0,0,0,0.08);
}
.phone__screen {
  width: 100%;
  height: 100%;
  background: #fff;
  border-radius: 30px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.phone__notch {
  position: absolute;
  top: 18px; left: 50%; transform: translateX(-50%);
  width: 110px; height: 22px; background: #0a0a0a; border-radius: 0 0 14px 14px;
  z-index: 2;
}
.phone__status {
  padding: 2rem 1.25rem 0.5rem;
  display: flex; justify-content: space-between;
  font-size: 0.75rem; font-weight: 600; color: #111;
}
.phone__body {
  flex: 1;
  padding: 1rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.phone__merchant {
  text-align: center;
  padding: 0.5rem 0 0.25rem;
}
.phone__merchant img { height: 30px; margin: 0 auto; }
.phone__merchant small {
  display: block;
  color: var(--color-muted);
  font-size: 0.7rem;
  margin-top: 0.25rem;
}
.phone__card {
  background: var(--color-cream);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 1rem;
}
.phone__card-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-muted);
  font-weight: 600;
}
.phone__amount {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--color-ink);
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-top: 0.25rem;
}
.phone__amount .r { color: var(--color-teal); }
.phone__chips {
  display: flex;
  gap: 0.4rem;
  margin-top: 0.75rem;
  flex-wrap: wrap;
}
.phone__chip {
  padding: 0.4rem 0.7rem;
  border-radius: var(--radius-pill);
  background: #fff;
  border: 1px solid var(--color-line);
  font-size: 0.75rem;
  font-weight: 600;
}
.phone__chip--active {
  background: var(--color-teal);
  color: #fff;
  border-color: var(--color-teal);
}
.phone__recipient {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.phone__avatar {
  width: 42px; height: 42px; border-radius: 50%;
  background: linear-gradient(135deg, var(--color-teal), var(--color-teal-dark));
  color: #fff;
  display: grid; place-items: center;
  font-weight: 700;
}
.phone__recipient-meta { line-height: 1.25; }
.phone__recipient-meta strong { font-size: 0.9rem; }
.phone__recipient-meta span { font-size: 0.75rem; color: var(--color-muted); }
.phone__pay {
  margin-top: auto;
  background: var(--color-teal);
  color: #fff;
  padding: 0.9rem;
  text-align: center;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 0.9rem;
}

/* Floating badge next to phone */
.hero__badge {
  position: absolute;
  background: #fff;
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.85rem;
  font-weight: 600;
}
.hero__badge--top {
  top: 8%; left: -8%;
  animation: float 6s ease-in-out infinite;
}
.hero__badge--bot {
  bottom: 10%; right: -6%;
  animation: float 6s ease-in-out infinite 2s;
}
.hero__badge .dot-green {
  width: 10px; height: 10px; border-radius: 50%;
  background: #22c55e;
  box-shadow: 0 0 0 4px rgba(34,197,94,0.18);
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}


/* 7. HOW IT WORKS
   -------------------------------------------------------------------------- */
.steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  counter-reset: step;
  list-style: none;
  padding-left: 0;
  margin: 0;
}
/* Gradient-border hover effect (shared by .step, .feature, .testimonial)
   -------------------------------------------------------------------
   We paint a 2-layer background on the card itself:
     - layer 1: the real content background (white)
     - layer 2: a teal gradient that sits "underneath" and is only visible
                where layer 1 doesn't reach — i.e. the 2px ring we reveal.
   We fade that gradient ring in on hover via opacity on a ::before. */
.step, .feature, .testimonial {
  position: relative;
  isolation: isolate;       /* keep ::before z-index local */
}
.step::before, .feature::before, .testimonial::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 2px;             /* = border thickness */
  background: linear-gradient(135deg,
              #5FD9D3 0%,
              #1FA7A2 45%,
              #17857F 100%);
  /* Mask trick: show only the ring, not the inside */
  -webkit-mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
  z-index: 1;
}
.step:hover::before,
.feature:hover::before,
.testimonial:hover::before { opacity: 1; }

.step {
  background: #fff;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}
.step:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: transparent;  /* let the gradient ring take over */
}
.step__num {
  display: inline-grid;
  place-items: center;
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--color-teal-soft);
  color: var(--color-teal-dark);
  font-weight: 800;
  font-size: 1.1rem;
  margin-bottom: var(--space-2);
}
.step h3 { font-size: var(--fs-md); }
.step p { color: var(--color-muted); margin: 0; }


/* 8. FEATURES
   -------------------------------------------------------------------------- */
.features {
  background: var(--color-cream);
}
.feature-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}
.feature {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  border: 1px solid var(--color-line);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}
.feature:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}
.feature__icon {
  width: 52px; height: 52px;
  display: grid; place-items: center;
  background: var(--color-teal);
  color: #fff;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-2);
}
.feature__icon svg { width: 26px; height: 26px; }
.feature h3 { font-size: var(--fs-md); }
.feature p { color: var(--color-muted); margin: 0; }


/* 9. MISSION
   -------------------------------------------------------------------------- */
.mission__wrap {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
  align-items: center;
}
.mission__content .section-eyebrow { color: var(--color-teal-dark); }
.mission__quote {
  font-size: var(--fs-lg);
  font-weight: 600;
  color: var(--color-ink);
  line-height: 1.35;
  text-wrap: pretty;
  margin: 0 0 var(--space-3);
}
.mission__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-2);
  margin-top: var(--space-3);
}
.mission__stat {
  padding: var(--space-3);
  background: var(--color-teal-soft);
  border-radius: var(--radius-md);
}
.mission__stat strong {
  display: block;
  font-size: var(--fs-xl);
  font-weight: 800;
  color: var(--color-teal-dark);
  line-height: 1;
}
.mission__stat span {
  font-size: var(--fs-xs);
  color: var(--color-muted);
  margin-top: 0.4rem;
  display: block;
}
.mission__visual {
  position: relative;
  padding: var(--space-4);
  background: var(--color-teal);
  border-radius: var(--radius-lg);
  color: #fff;
  overflow: hidden;
}
.mission__visual::before {
  content: '';
  position: absolute; inset: -40% -20% auto auto;
  width: 300px; height: 300px;
  background: rgba(255,255,255,0.08);
  border-radius: 50%;
}
.mission__visual h3 {
  color: #fff;
  font-size: var(--fs-lg);
  position: relative;
}
.mission__visual p { color: rgba(255,255,255,0.9); position: relative; }
.mission__list {
  list-style: none;
  padding: 0; margin: var(--space-3) 0 0;
  position: relative;
}
.mission__list li {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  padding: 0.6rem 0;
  border-top: 1px solid rgba(255,255,255,0.2);
}
.mission__list li:first-child { border-top: 0; }
.mission__list svg { flex-shrink: 0; margin-top: 3px; }


/* 10. TESTIMONIALS
   -------------------------------------------------------------------------- */
.testimonials__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}
.testimonial {
  background: #fff;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}
.testimonial:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}
.testimonial__stars {
  color: var(--color-teal);
  font-size: 1.1rem;
  letter-spacing: 2px;
  margin-bottom: var(--space-2);
}
.testimonial__quote {
  font-size: var(--fs-sm);
  color: var(--color-ink);
  line-height: 1.55;
  margin: 0 0 var(--space-3);
  text-wrap: pretty;
}
.testimonial__person {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.testimonial__avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-teal), var(--color-teal-dark));
  color: #fff;
  display: grid; place-items: center;
  font-weight: 700;
}
.testimonial__name strong { display: block; font-size: 0.95rem; }
.testimonial__name span { font-size: var(--fs-xs); color: var(--color-muted); }


/* 11. CALL-TO-ACTION
   -------------------------------------------------------------------------- */
.cta {
  background: var(--color-black);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: var(--space-5) var(--space-4);
  position: relative;
  overflow: hidden;
  text-align: center;
}
.cta::before {
  content: '';
  position: absolute;
  inset: auto -20% -60% auto;
  width: 520px; height: 520px;
  background: radial-gradient(circle, rgba(31,167,162,0.4), transparent 60%);
  border-radius: 50%;
  pointer-events: none;
}
.cta h2 { color: #fff; text-wrap: balance; }
.cta h2 .accent { color: var(--color-teal); }
.cta p {
  color: rgba(255,255,255,0.75);
  max-width: 560px;
  margin: 0 auto var(--space-4);
  font-size: var(--fs-md);
  position: relative;
}
.cta__contact {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-3);
  margin-top: var(--space-4);
  position: relative;
}
.cta__contact a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: #fff;
  font-weight: 500;
  font-size: var(--fs-sm);
}
.cta__contact a:hover { color: var(--color-teal); text-decoration: none; }
.cta__contact svg { color: var(--color-teal); }
.cta__buttons {
  display: flex; flex-wrap: wrap; justify-content: center;
  gap: var(--space-2);
  position: relative;
}


/* 12. FOOTER
   -------------------------------------------------------------------------- */
.site-footer {
  background: var(--color-ink);
  color: #fff;
  padding-block: var(--space-5) var(--space-3);
}
.site-footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}
.site-footer__brand p {
  color: rgba(255,255,255,0.65);
  font-size: var(--fs-sm);
  max-width: 320px;
  margin-top: var(--space-2);
}
.site-footer__brand .footer-logo {
  display: flex; align-items: center; gap: 0.5rem;
  font-weight: 800; font-size: 1.1rem; color: #fff;
}
.site-footer__brand .footer-logo img {
  height: 32px;
  background: #fff;
  padding: 3px;
  border-radius: 6px;
}
.site-footer__col h4 {
  font-size: var(--fs-sm);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #fff;
  margin-bottom: var(--space-2);
}
.site-footer__col ul { list-style: none; padding: 0; margin: 0; }
.site-footer__col li { margin-bottom: 0.5rem; }
.site-footer__col a {
  color: rgba(255,255,255,0.65);
  font-size: var(--fs-sm);
}
.site-footer__col a:hover { color: var(--color-teal); text-decoration: none; }
.site-footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: var(--space-3);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  justify-content: space-between;
  color: rgba(255,255,255,0.5);
  font-size: var(--fs-xs);
}


/* 13. RESPONSIVE BREAKPOINTS
   --------------------------------------------------------------------------
   Mobile-first: base styles above target phones. We add complexity up. */

/* Small tablets and up */
@media (min-width: 640px) {
  .steps { grid-template-columns: repeat(2, 1fr); }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonials__grid { grid-template-columns: repeat(2, 1fr); }
}

/* Tablets / small laptops */
@media (min-width: 860px) {
  .hero__inner {
    grid-template-columns: 1.15fr 1fr;
    gap: var(--space-6);
  }
  .mission__wrap {
    grid-template-columns: 1.1fr 1fr;
    gap: var(--space-6);
  }
  .steps { grid-template-columns: repeat(4, 1fr); }
  .feature-grid { grid-template-columns: repeat(3, 1fr); }
  .testimonials__grid { grid-template-columns: repeat(3, 1fr); }
  .site-footer__grid {
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
  }
  .cta { padding: var(--space-6); }
}

/* Mobile nav — show hamburger below 640px */
@media (max-width: 639px) {
  .nav-toggle { display: block; }
  .site-nav__links {
    position: absolute;
    top: 100%; left: 0; right: 0;
    flex-direction: column;
    gap: 0;
    background: #fff;
    border-bottom: 1px solid var(--color-line);
    padding: var(--space-2) var(--container-pad);
    transform: translateY(-10px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
  }
  .site-nav__links li {
    border-top: 1px solid var(--color-line);
  }
  .site-nav__links li:first-child { border-top: 0; }
  .site-nav__links a {
    display: block;
    padding: 0.9rem 0;
  }
  .site-nav[data-open="true"] .site-nav__links {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }
  .site-nav[data-open="true"] .nav-toggle__bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }
  .site-nav[data-open="true"] .nav-toggle__bar:nth-child(2) { opacity: 0; }
  .site-nav[data-open="true"] .nav-toggle__bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }
  /* Hero badges — reduce overhang on very small screens */
  .hero__badge--top { left: 0; }
  .hero__badge--bot { right: 0; }
}