/* Cipher Munch: learningplaygroundapps.com */

:root {
  --ink: #0c0a13;
  --ink-2: #110e1b;
  --panel: #171223;
  --panel-2: #1e182c;
  --line: rgba(216, 196, 150, 0.16);
  --line-soft: rgba(216, 196, 150, 0.09);
  --paper: #efe9dc;
  --muted: #a89fbd;
  --gold: #c9a24b;
  --gold-bright: #e8c97a;
  --gold-deep: #8f6f2c;
  --violet: #8b7cf6;
  --violet-soft: rgba(139, 124, 246, 0.16);
  --green: #4caf7d;
  --radius: 14px;
  --radius-lg: 22px;
  --w: 1120px;
  --font-display: "Fraunces", "Iowan Old Style", Georgia, serif;
  --font-body: "Source Sans 3", "Avenir Next", "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", "SF Mono", Menlo, monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

body {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--paper);
  background: var(--ink);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--gold-bright); text-decoration: none; }
a:hover { color: var(--paper); }
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 2px solid var(--violet);
  outline-offset: 3px;
  border-radius: 4px;
}

.wrap { max-width: var(--w); margin: 0 auto; padding: 0 24px; }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(12, 10, 19, 0.86);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line-soft);
}
.nav {
  max-width: var(--w); margin: 0 auto; padding: 12px 24px;
  display: flex; align-items: center; gap: 20px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; color: var(--paper); font-size: 1.05rem; }
.brand img { width: 34px; height: 34px; border-radius: 8px; }
.nav-links { display: flex; gap: 22px; list-style: none; margin-left: auto; align-items: center; }
.nav-links a { color: var(--muted); font-size: 0.95rem; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--paper); }
.nav-cta {
  background: linear-gradient(160deg, var(--gold-bright), var(--gold));
  color: #1c1503 !important; font-weight: 700; padding: 8px 16px; border-radius: 999px;
  font-size: 0.92rem !important; white-space: nowrap;
}
.nav-cta:hover { filter: brightness(1.07); }
.nav-toggle { display: none; }

/* ---------- hero ---------- */
.hero { position: relative; overflow: hidden; padding: 72px 0 40px; }
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(52rem 30rem at 82% 8%, rgba(139, 124, 246, 0.14), transparent 60%),
    radial-gradient(40rem 26rem at 8% 90%, rgba(201, 162, 75, 0.1), transparent 60%);
}
.hero-inner {
  position: relative; max-width: var(--w); margin: 0 auto; padding: 0 24px;
  display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 48px; align-items: center;
}
.eyebrow {
  font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--gold); display: inline-flex; align-items: center; gap: 10px;
}
.eyebrow::before { content: ""; width: 26px; height: 1px; background: var(--gold); }
.hero h1 {
  font-family: var(--font-display); font-weight: 640; font-size: clamp(2.6rem, 6vw, 4.3rem);
  line-height: 1.04; letter-spacing: -0.015em; margin: 18px 0 20px;
}
.hero h1 .decode { color: var(--gold-bright); }
.hero .lead { font-size: 1.22rem; color: var(--muted); max-width: 34em; }
.hero .lead strong { color: var(--paper); font-weight: 600; }
.hero-ctas { display: flex; align-items: center; gap: 18px; margin: 30px 0 14px; flex-wrap: wrap; }
.android-note {
  font-family: var(--font-mono); font-size: 0.8rem; color: var(--muted);
  border: 1px dashed var(--line); border-radius: 999px; padding: 7px 14px;
}
.trust-row {
  display: flex; gap: 8px 22px; flex-wrap: wrap; margin-top: 18px;
  font-size: 0.92rem; color: var(--muted); list-style: none;
}
.trust-row li::before { content: "✓ "; color: var(--green); font-weight: 700; }

.badge-appstore { display: inline-block; line-height: 0; }
.badge-appstore svg { height: 54px; width: auto; }
.badge-appstore:hover { filter: brightness(1.12); }

.hero-art { position: relative; display: flex; justify-content: center; }
.hero-art .coin { position: absolute; width: 108px; filter: drop-shadow(0 12px 24px rgba(0,0,0,0.5)); }
.hero-art .coin-tl { top: -6px; left: -4px; transform: rotate(-14deg); }
.hero-art .coin-br { bottom: 32px; right: -10px; width: 88px; transform: rotate(11deg); }

/* phone frame */
.phone {
  border-radius: 44px; padding: 10px; background: #201b2d;
  border: 1px solid rgba(216, 196, 150, 0.22);
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.55), inset 0 0 0 1px rgba(0,0,0,0.6);
  width: min(320px, 78vw);
}
.phone img { border-radius: 34px; }

/* ---------- stat strip ---------- */
.stat-strip { border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); background: var(--ink-2); }
.stat-strip .wrap {
  display: flex; justify-content: space-between; gap: 12px 28px; flex-wrap: wrap; padding: 20px 24px;
}
.stat { font-family: var(--font-mono); font-size: 0.85rem; letter-spacing: 0.06em; color: var(--muted); }
.stat b { color: var(--gold-bright); font-weight: 600; margin-right: 6px; font-size: 1rem; }

/* ---------- sections ---------- */
.section { padding: 84px 0; }
.section-alt { background: var(--ink-2); border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); }
.section-head { max-width: 42em; margin-bottom: 44px; }
.section-head h2 {
  font-family: var(--font-display); font-weight: 620; font-size: clamp(1.8rem, 3.6vw, 2.5rem);
  line-height: 1.12; margin: 14px 0 12px; letter-spacing: -0.01em;
}
.section-head p { color: var(--muted); font-size: 1.1rem; }

/* cipher divider */
.cipher-strip {
  font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.42em;
  color: rgba(216, 196, 150, 0.3); text-align: center; overflow: hidden; white-space: nowrap;
  user-select: none; padding: 4px 0;
}

/* ---------- how it works ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; list-style: none; }
.step {
  background: var(--panel); border: 1px solid var(--line-soft); border-radius: var(--radius);
  padding: 26px 22px;
}
.step .cell {
  width: 44px; height: 44px; border-radius: 9px; background: var(--paper); color: #171223;
  display: grid; place-items: center; font-family: var(--font-mono); font-weight: 700; font-size: 1.3rem;
  position: relative; margin-bottom: 18px; box-shadow: 0 3px 0 rgba(0,0,0,0.35);
}
.step .cell::after {
  content: attr(data-freq); position: absolute; bottom: 2px; right: 4px;
  font-size: 0.55rem; color: var(--green); font-weight: 600;
}
.step h3 { font-size: 1.12rem; margin-bottom: 8px; font-weight: 700; }
.step p { color: var(--muted); font-size: 0.98rem; }

/* ---------- screenshots ---------- */
.shots {
  display: flex; gap: 26px; overflow-x: auto; padding: 8px 24px 26px;
  scroll-snap-type: x mandatory; max-width: var(--w); margin: 0 auto;
  scrollbar-color: var(--gold-deep) transparent;
}
.shot { scroll-snap-align: center; flex: 0 0 auto; text-align: center; }
.shot .phone { width: min(268px, 70vw); border-radius: 38px; padding: 8px; }
.shot .phone img { border-radius: 30px; }
.shot figcaption { margin-top: 14px; font-size: 0.95rem; color: var(--muted); }
.shot figcaption b { color: var(--paper); display: block; font-size: 1.02rem; }

/* ---------- feature grid ---------- */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; list-style: none; }
.feature {
  border: 1px solid var(--line-soft); border-radius: var(--radius); padding: 24px 22px;
  background: linear-gradient(180deg, var(--panel), transparent);
}
.feature .tag {
  font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--violet); display: block; margin-bottom: 10px;
}
.feature h3 { font-size: 1.1rem; margin-bottom: 8px; font-weight: 700; }
.feature p { color: var(--muted); font-size: 0.97rem; }

/* ---------- codebusters section ---------- */
.split { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 56px; align-items: center; }
.split .phone { margin: 0 auto; }
.check-cols { columns: 2; gap: 28px; list-style: none; margin: 22px 0 26px; }
.check-cols li {
  break-inside: avoid; padding: 7px 0 7px 30px; position: relative; color: var(--paper);
  font-size: 1.02rem;
}
.check-cols li::before {
  content: "✓"; position: absolute; left: 0; top: 6px; color: var(--gold);
  font-weight: 700; border: 1px solid var(--line); border-radius: 6px;
  width: 20px; height: 20px; display: grid; place-items: center; font-size: 0.75rem;
}
.check-cols li small { display: block; color: var(--muted); font-size: 0.88rem; }

/* ---------- guides ---------- */
.guide-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.guide-card {
  display: flex; flex-direction: column; gap: 10px; border: 1px solid var(--line-soft);
  border-radius: var(--radius); padding: 24px 22px; background: var(--panel);
  color: var(--paper); transition: border-color 0.2s, transform 0.2s;
}
.guide-card:hover { border-color: var(--gold); transform: translateY(-3px); color: var(--paper); }
.guide-card .tag {
  font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--gold);
}
.guide-card h3 { font-size: 1.13rem; font-weight: 700; line-height: 1.3; }
.guide-card p { color: var(--muted); font-size: 0.95rem; flex: 1; }
.guide-card .more { font-size: 0.9rem; color: var(--gold-bright); font-weight: 600; }

/* ---------- FAQ ---------- */
.faq { max-width: 780px; }
.faq details { border-bottom: 1px solid var(--line-soft); }
.faq summary {
  cursor: pointer; list-style: none; display: flex; align-items: baseline; gap: 16px;
  padding: 20px 4px; font-weight: 700; font-size: 1.08rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary .cell {
  flex: 0 0 auto; width: 30px; height: 30px; border-radius: 7px; background: var(--paper);
  color: #171223; display: grid; place-items: center; font-family: var(--font-mono);
  font-weight: 700; font-size: 0.9rem; transform: translateY(4px);
  box-shadow: 0 2px 0 rgba(0,0,0,0.35);
}
.faq details[open] summary .cell { background: var(--gold-bright); }
.faq details > div { padding: 0 4px 22px 46px; color: var(--muted); }
.faq details a { font-weight: 600; }

/* ---------- CTA ---------- */
.cta-panel {
  border: 1px solid var(--line); border-radius: var(--radius-lg); text-align: center;
  padding: 64px 32px; position: relative; overflow: hidden;
  background:
    radial-gradient(38rem 22rem at 50% 120%, rgba(201, 162, 75, 0.16), transparent 65%),
    var(--panel);
}
.cta-panel h2 {
  font-family: var(--font-display); font-weight: 620;
  font-size: clamp(1.9rem, 4vw, 2.7rem); margin-bottom: 12px;
}
.cta-panel p { color: var(--muted); max-width: 36em; margin: 0 auto 28px; }
.cta-panel .hero-ctas { justify-content: center; }
.cta-panel .coin { position: absolute; width: 92px; opacity: 0.9; }
.cta-panel .coin-l { left: 4%; bottom: -18px; transform: rotate(-12deg); }
.cta-panel .coin-r { right: 4%; top: -16px; transform: rotate(14deg); }

/* ---------- footer ---------- */
.site-footer { border-top: 1px solid var(--line-soft); background: var(--ink-2); padding: 48px 0 40px; }
.footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 40px; margin-bottom: 34px; }
.footer-grid h4 {
  font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--gold); margin-bottom: 14px; font-weight: 600;
}
.footer-grid p { color: var(--muted); font-size: 0.95rem; max-width: 30em; }
.footer-grid ul { list-style: none; }
.footer-grid li { margin-bottom: 9px; }
.footer-grid a { color: var(--muted); font-size: 0.95rem; }
.footer-grid a:hover { color: var(--paper); }
.footer-base {
  border-top: 1px solid var(--line-soft); padding-top: 22px; display: flex;
  justify-content: space-between; gap: 12px 24px; flex-wrap: wrap;
  color: var(--muted); font-size: 0.88rem;
}

/* ---------- article / guide pages ---------- */
.article-hero { padding: 60px 0 34px; }
.breadcrumb {
  font-family: var(--font-mono); font-size: 0.78rem; color: var(--muted);
  letter-spacing: 0.04em; margin-bottom: 20px;
}
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--gold-bright); }
.article-hero h1 {
  font-family: var(--font-display); font-weight: 630; font-size: clamp(2rem, 4.6vw, 3.1rem);
  line-height: 1.1; letter-spacing: -0.012em; margin: 14px 0 16px; max-width: 20em;
}
.article-hero .dek { font-size: 1.18rem; color: var(--muted); max-width: 38em; }

.article { max-width: 720px; padding-bottom: 40px; }
.article h2 {
  font-family: var(--font-display); font-weight: 620; font-size: 1.65rem;
  margin: 44px 0 14px; line-height: 1.2;
}
.article h3 { font-size: 1.15rem; margin: 30px 0 10px; }
.article p { margin-bottom: 16px; color: #d8d2c6; }
.article ul, .article ol { margin: 0 0 18px 22px; color: #d8d2c6; }
.article li { margin-bottom: 8px; }
.article li::marker { color: var(--gold); }
.article strong { color: var(--paper); }

.callout {
  border: 1px solid var(--line); border-left: 3px solid var(--gold);
  border-radius: 0 var(--radius) var(--radius) 0; background: var(--panel);
  padding: 20px 22px; margin: 26px 0;
}
.callout .tag {
  font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--gold); display: block; margin-bottom: 8px;
}
.callout p:last-child { margin-bottom: 0; }

.article-cta {
  border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--panel);
  padding: 34px 30px; margin: 48px 0 10px; text-align: center;
}
.article-cta h2 { margin-top: 0; }
.article-cta p { color: var(--muted); }

.related { padding: 40px 0 84px; }
.related h2 { font-family: var(--font-display); font-size: 1.5rem; margin-bottom: 22px; font-weight: 620; }
.related .guide-grid { grid-template-columns: repeat(3, 1fr); }

/* ---------- legal pages ---------- */
.doc-shell { max-width: 760px; margin: 0 auto; padding: 60px 24px 80px; }
.doc-header h1 { font-family: var(--font-display); font-weight: 630; font-size: clamp(2rem, 4vw, 2.8rem); margin: 14px 0 10px; }
.doc-meta { font-family: var(--font-mono); font-size: 0.8rem; color: var(--muted); margin-bottom: 16px; }
.doc-header .lead { color: var(--muted); font-size: 1.12rem; }
.doc-section { margin-top: 36px; }
.doc-section h2 { font-family: var(--font-display); font-weight: 620; font-size: 1.4rem; margin-bottom: 10px; }
.doc-section p, .doc-section li { color: #d8d2c6; }
.doc-section ul { margin: 10px 0 10px 22px; }
.doc-section li { margin-bottom: 6px; }
.legal-note {
  border: 1px solid var(--line); border-left: 3px solid var(--gold); border-radius: 0 var(--radius) var(--radius) 0;
  background: var(--panel); padding: 22px 24px;
}

/* ---------- reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; } }

/* ---------- responsive ---------- */
@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; gap: 44px; }
  .hero-art { order: 2; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .features { grid-template-columns: repeat(2, 1fr); }
  .guide-grid, .related .guide-grid { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; gap: 40px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .section { padding: 60px 0; }
  .nav { flex-wrap: wrap; }
  .nav-links { gap: 14px; flex-wrap: wrap; }
  .nav-links a:not(.nav-cta) { font-size: 0.88rem; }
  .steps, .features, .guide-grid, .related .guide-grid { grid-template-columns: 1fr; }
  .check-cols { columns: 1; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .faq details > div { padding-left: 4px; }
  .hero { padding-top: 48px; }
  .hero-art .coin-tl { width: 84px; }
}