/* ---------- tokens ---------- */
:root {
  --ink: #2a1a12;
  --cream: #fff6e9;
  --coral: #ff5436;
  --yellow: #ffe04d;
  --stamp-blue: #2f6fd0;
  --muted-tan: #8a7c6c;
  --muted-brown: #5a4a3c;
  --muted-lt: #9a8c7c;
  --border-tan: #e3d3ba;
  --locked-tan: #b6a684;

  --serif: 'Instrument Serif', serif;
  --sans: 'Space Grotesk', sans-serif;

  --nav-h: 78px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--cream);
  color: var(--ink);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.accent { color: var(--coral); }

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--ink);
  color: var(--yellow);
  padding: 10px 16px;
  z-index: 999;
}
.skip-link:focus { left: 12px; top: 12px; }

/* ---------- nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 246, 233, 0.7);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: box-shadow .25s ease, background .25s ease;
}
.nav.is-scrolled {
  background: rgba(255, 246, 233, 0.92);
  box-shadow: 0 1px 0 rgba(42, 26, 18, 0.1);
}
.nav-inner {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 48px;
}
.logo {
  font-family: var(--serif);
  font-size: 24px;
  color: var(--ink);
}

.btn { text-decoration: none; display: inline-flex; align-items: center; cursor: pointer; }

.btn-pill {
  background: var(--ink);
  color: var(--yellow);
  font: 600 13px var(--sans);
  padding: 10px 20px;
  border-radius: 12px;
  transition: transform .18s ease, box-shadow .18s ease;
}
.btn-pill:hover { transform: translateY(-2px); box-shadow: 0 4px 0 rgba(42,26,18,.25); }

/* ---------- hero ---------- */
.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px 48px 70px;
  position: relative;
}

.hero-star {
  font-family: var(--serif);
  font-size: clamp(80px, 14vw, 120px);
  line-height: .7;
  color: var(--coral);
  will-change: transform;
}

.hero-headline {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(38px, 8vw, 64px);
  color: var(--ink);
  margin: 24px 0 0;
  line-height: 1.05;
}

.hero-sub {
  font-size: 16px;
  color: var(--muted-brown);
  margin: 16px 0 0;
  max-width: 440px;
  line-height: 1.5;
}

.hero-cta {
  display: flex;
  gap: 14px;
  margin-top: 36px;
}

.btn-primary {
  background: var(--yellow);
  color: var(--ink);
  font: 600 15px var(--sans);
  padding: 14px 24px;
  border-radius: 14px;
  border: 3px solid var(--ink);
  box-shadow: 5px 5px 0 var(--ink);
  transition: transform .18s ease, box-shadow .18s ease;
}
.btn-primary:hover {
  transform: translate(-2px, -2px);
  box-shadow: 7px 7px 0 var(--ink);
}
.btn-primary:active {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 var(--ink);
}

/* ---------- showcase ---------- */
.showcase {
  padding: 90px 48px 100px;
  max-width: 1000px;
  margin: 0 auto;
  text-align: center;
}

.showcase h2,
.meaning h2,
.final-cta h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(30px, 5.5vw, 40px);
  color: var(--ink);
  line-height: 1.2;
  margin: 0;
}

.section-sub {
  font-size: 16px;
  color: var(--muted-brown);
  margin: 16px auto 0;
  max-width: 440px;
  line-height: 1.5;
}

.stamp-row {
  display: flex;
  gap: 28px;
  margin-top: 56px;
  flex-wrap: wrap;
  justify-content: center;
}

.stamp {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: transform .3s ease;
}

.stamp--earned {
  border: 3px solid var(--stamp-blue);
  transform: rotate(-6deg);
  color: var(--stamp-blue);
}
.stamp-label {
  font: 700 11px var(--sans);
  letter-spacing: .14em;
}
.stamp-label--coral { color: var(--coral); }
.stamp-title {
  font-family: var(--serif);
  font-size: 26px;
  color: var(--ink);
}

.stamp--active {
  border: 4px dashed var(--coral);
  transform: rotate(4deg);
  background: rgba(255, 84, 54, .06);
}
.stamp-badge {
  background: var(--coral);
  color: #fff;
  border: 2px solid var(--ink);
  border-radius: 9px;
  padding: 2px 12px;
  font: 700 11px var(--sans);
}

.stamp--locked {
  border: 3px solid var(--border-tan);
  border-radius: 20px;
  color: var(--locked-tan);
}
.stamp-locked-label {
  font: 700 12px var(--sans);
  letter-spacing: .1em;
  text-align: center;
}

.stamp:hover { transform: scale(1.04) rotate(0deg); }

/* ---------- meaning of star ---------- */
.meaning {
  padding: 70px 48px;
  text-align: center;
  border-top: 4px solid #fff7eaeb;
  max-width: 1000px;
  margin: 0 auto;
}

.card-stack {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 22px;
  margin-top: 60px;
}

.star-card {
  width: 220px;
  border: 3px solid var(--ink);
  border-radius: 18px;
  padding: 24px 22px;
  box-shadow: 6px 6px 0 var(--ink);
  margin-bottom: 30px;
  transition: transform .25s ease, box-shadow .25s ease;
}
.star-card:hover {
  box-shadow: 9px 9px 0 var(--ink);
}

.star-card--ink {
  background: #fff;
  transform: rotate(-10.5deg);
}
.star-card--ink:hover { transform: rotate(-10.5deg) translateY(-4px); }

.star-card--yellow {
  background: var(--yellow);
  transform: rotate(8deg);
}
.star-card--yellow:hover { transform: rotate(8deg) translateY(-4px); }

.star-card--coral {
  background: var(--coral);
  transform: rotate(-8deg);
}
.star-card--coral:hover { transform: rotate(-8deg) translateY(-4px); }

.star-card-glyph {
  font-family: var(--serif);
  font-size: 50px;
  color: var(--ink);
  line-height: 1;
}
.star-card-title {
  font: 600 15px var(--sans);
  color: var(--ink);
  margin-top: 4px;
  margin-bottom: 6px;
}
.star-card-body {
  font-size: 12px;
  color: var(--muted-tan);
  line-height: 1.5;
}
.star-card-body--dark { color: var(--ink); opacity: .75; }

/* ---------- final CTA ---------- */
.final-cta {
  padding: 90px 48px 70px;
  text-align: center;
  border-top: 4px solid #fff7eaeb;
  max-width: 1000px;
  margin: 0 auto;
}

.final-cta h2 { font-size: clamp(32px, 7vw, 48px); line-height: 1.15; }

.final-cta-buttons {
  display: flex;
  gap: 14px;
  margin-top: 32px;
  justify-content: center;
}

.btn-appstore {
  background: var(--ink);
  border-radius: 14px;
  padding: 12px 22px;
  display: flex;
  align-items: center;
  gap: 9px;
  box-shadow: 5px 5px 0 var(--coral);
  transition: transform .18s ease, box-shadow .18s ease;
}
.btn-appstore:hover {
  transform: translate(-2px, -2px);
  box-shadow: 7px 7px 0 var(--coral);
}
.btn-appstore:active {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 var(--coral);
}

.appstore-label { display: flex; flex-direction: column; }
.appstore-label-top { font-size: 8px; color: #fff; opacity: .75; line-height: 1; }
.appstore-label-bottom { font: 600 14px var(--sans); color: #fff; line-height: 1.2; }

.footer-copy {
  margin-top: 56px;
  padding-top: 20px;
  border-top: 1px solid #e7d8c2;
  font-size: 11px;
  color: var(--muted-lt);
}

/* ---------- scroll reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .7s cubic-bezier(.16,.8,.3,1), transform .7s cubic-bezier(.16,.8,.3,1);
  transition-delay: calc(var(--reveal-delay, 0) * 90ms);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.stamp.reveal.is-visible {
  transform: rotate(var(--stamp-rot, 0deg));
}
.stamp--earned.reveal { --stamp-rot: -6deg; }
.stamp--active.reveal { --stamp-rot: 4deg; }
.stamp--locked.reveal { --stamp-rot: 0deg; }
.stamp.reveal { transform: translateY(28px) rotate(0deg); }

.star-card.reveal.is-visible { transform: rotate(var(--card-rot)) translateY(0); }
.star-card.reveal { transform: translateY(40px) rotate(0deg); }
.star-card--ink.reveal { --card-rot: -10.5deg; }
.star-card--yellow.reveal { --card-rot: 8deg; }
.star-card--coral.reveal { --card-rot: -8deg; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal, .stamp, .star-card, .hero-star, .btn-primary, .btn-appstore, .btn-pill {
    transition: none !important;
    transform: none !important;
    opacity: 1 !important;
  }
  .stamp--earned { transform: rotate(-6deg) !important; }
  .stamp--active { transform: rotate(4deg) !important; }
  .star-card--ink { transform: rotate(-10.5deg) !important; }
  .star-card--yellow { transform: rotate(8deg) !important; }
  .star-card--coral { transform: rotate(-8deg) !important; }
}

/* ---------- responsive ---------- */
@media (max-width: 640px) {
  .nav-inner { padding: 16px 22px; }
  .hero { padding: 24px 22px 56px; }
  .showcase { padding: 64px 22px 72px; }
  .meaning { padding: 56px 22px; }
  .final-cta { padding: 64px 22px 56px; }
  .stamp-row { gap: 20px; }
  .stamp { width: 180px; height: 180px; }
  .star-card { width: 200px; }
}