/* FaceReader — VHS / Manga-bestiary aesthetic
   Palette mirrors the iOS app (AppTheme.swift) */

:root {
  --vhs-base: #0a0808;
  --vhs-surface: #1a1414;
  --vhs-ink: #f4e9d3;
  --vhs-red: #d6433a;
  --vhs-cyan: #48b8c4;
  --vhs-magenta: #c34d8a;
  --vhs-brown: #4b3e36;

  --font-display: "Bangers", "Permanent Marker", "Anton", "Yusei Magic", "Jua", system-ui, sans-serif;
  --font-body: "Special Elite", "Yusei Magic", "Jua", "Noto Sans KR", "Noto Sans JP", system-ui, sans-serif;
  --font-mono: "Special Elite", "Courier New", monospace;

  --max-w: 1100px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--vhs-base);
  color: var(--vhs-ink);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  scroll-behavior: smooth;
}

body {
  background:
    radial-gradient(circle at 20% 10%, rgba(214, 67, 58, 0.06), transparent 50%),
    radial-gradient(circle at 80% 90%, rgba(72, 184, 196, 0.05), transparent 60%),
    repeating-linear-gradient(
      0deg,
      transparent 0,
      transparent 2px,
      rgba(255, 255, 255, 0.012) 2px,
      rgba(255, 255, 255, 0.012) 3px
    ),
    var(--vhs-base);
  min-height: 100vh;
}

a {
  color: var(--vhs-cyan);
  text-decoration: none;
  border-bottom: 1px dashed currentColor;
  transition: color 0.15s, border-color 0.15s;
}
a:hover { color: var(--vhs-magenta); }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: 0.02em;
  margin: 0 0 0.6em;
  line-height: 1.15;
}

h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); }
h2 { font-size: clamp(1.8rem, 4vw, 2.6rem); margin-top: 0.4em; }
h3 { font-size: 1.4rem; }

p { margin: 0 0 1em; }

code, pre {
  font-family: var(--font-mono);
  background: rgba(255, 255, 255, 0.06);
  padding: 0.1em 0.4em;
  border-radius: 3px;
}

hr {
  border: 0;
  border-top: 1px dashed rgba(244, 233, 211, 0.25);
  margin: 3rem 0;
}

/* ----- Nav ----- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 8, 8, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(244, 233, 211, 0.1);
}
.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0.9rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.nav-brand {
  font-family: var(--font-display);
  font-size: 1.4rem;
  color: var(--vhs-ink);
  border: none;
  letter-spacing: 0.06em;
}
.nav-brand:hover { color: var(--vhs-red); }
.lang-switch {
  display: flex;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}
.lang-switch a {
  color: rgba(244, 233, 211, 0.55);
  padding: 0.25rem 0.55rem;
  border: 1px solid rgba(244, 233, 211, 0.15);
  border-radius: 3px;
  letter-spacing: 0.05em;
}
.lang-switch a.active {
  color: var(--vhs-ink);
  border-color: var(--vhs-red);
  background: rgba(214, 67, 58, 0.12);
}
.lang-switch a:hover { color: var(--vhs-ink); border-color: var(--vhs-ink); }

/* ----- Hero ----- */
.hero {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 4rem 1.5rem 3rem;
  text-align: center;
}
.hero .tagline {
  font-family: var(--font-mono);
  color: var(--vhs-red);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  font-size: 0.9rem;
  margin-bottom: 1rem;
}
.hero h1 {
  color: var(--vhs-ink);
  text-shadow:
    2px 2px 0 var(--vhs-red),
    4px 4px 0 var(--vhs-cyan);
}
.hero .lead {
  max-width: 640px;
  margin: 1.2rem auto 2rem;
  font-size: 1.1rem;
  color: rgba(244, 233, 211, 0.85);
}
.cta-row {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 1.5rem;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.9rem 1.6rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: 0.06em;
  color: var(--vhs-ink);
  background: var(--vhs-red);
  border: 2px solid var(--vhs-ink);
  border-radius: 4px;
  text-decoration: none;
  box-shadow: 4px 4px 0 var(--vhs-ink);
  transition: transform 0.08s, box-shadow 0.08s;
}
.btn:hover { color: var(--vhs-ink); }
.btn:active {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 var(--vhs-ink);
}
.btn.secondary {
  background: transparent;
  color: var(--vhs-ink);
}

/* ----- App Store QR ----- */
.qr-block {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  margin: 1.6rem auto 0;
  padding: 0.7rem 1rem 0.7rem 0.7rem;
  background: var(--vhs-base);
  border: 3px solid var(--vhs-ink);
  border-radius: 6px;
  text-decoration: none;
  box-shadow: 4px 4px 0 var(--vhs-cyan), 8px 8px 0 var(--vhs-red);
  transition: transform 0.08s, box-shadow 0.08s;
}
.qr-block:hover {
  transform: translate(-1px, -1px);
  box-shadow: 5px 5px 0 var(--vhs-cyan), 10px 10px 0 var(--vhs-red);
}
.qr-block img.qr {
  display: block;
  width: 96px;
  height: 96px;
  background: #fff;
  padding: 6px;
  border-radius: 4px;
}
.qr-block .qr-caption {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--vhs-ink);
  line-height: 1.3;
  text-align: left;
}

/* ----- Banner image ----- */
.banner {
  max-width: var(--max-w);
  margin: 0 auto 4rem;
  padding: 0 1.5rem;
}
.banner img {
  width: 100%;
  height: auto;
  border: 4px solid var(--vhs-ink);
  border-radius: 8px;
  box-shadow:
    -8px 8px 0 var(--vhs-red),
    -16px 16px 0 var(--vhs-cyan);
}

/* ----- Sections ----- */
section {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 3rem 1.5rem;
}
.section-title {
  display: inline-block;
  padding: 0.3rem 0.9rem;
  background: var(--vhs-ink);
  color: var(--vhs-base);
  font-family: var(--font-display);
  letter-spacing: 0.05em;
  transform: rotate(-2deg);
  margin-bottom: 1.6rem;
}

/* ----- Feature grid ----- */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}
.feature {
  padding: 1.5rem;
  background: var(--vhs-surface);
  border: 1px solid rgba(244, 233, 211, 0.12);
  border-left: 4px solid var(--vhs-red);
  border-radius: 4px;
  transition: transform 0.15s, border-color 0.15s;
}
.feature:nth-child(2) { border-left-color: var(--vhs-cyan); }
.feature:nth-child(3) { border-left-color: var(--vhs-magenta); }
.feature:nth-child(4) { border-left-color: var(--vhs-red); }
.feature:nth-child(5) { border-left-color: var(--vhs-cyan); }
.feature:nth-child(6) { border-left-color: var(--vhs-magenta); }
.feature:hover { transform: translateY(-3px); }
.feature h3 {
  font-family: var(--font-display);
  color: var(--vhs-ink);
  margin-bottom: 0.6rem;
}
.feature p {
  margin: 0;
  color: rgba(244, 233, 211, 0.78);
  font-size: 0.95rem;
}
.feature-icon {
  font-size: 1.8rem;
  margin-bottom: 0.6rem;
  display: block;
}

/* ----- Tier list ----- */
.tiers {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.8rem;
  margin-top: 1.5rem;
}
.tier {
  padding: 1rem;
  text-align: center;
  border: 2px solid var(--vhs-ink);
  border-radius: 4px;
  background: var(--vhs-surface);
}
.tier .name {
  font-family: var(--font-display);
  font-size: 1.6rem;
  display: block;
  margin-bottom: 0.3rem;
}
.tier .sub {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: rgba(244, 233, 211, 0.55);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.tier.t0 { border-color: rgba(244, 233, 211, 0.5); }
.tier.t1 { border-color: var(--vhs-cyan); }
.tier.t2 { border-color: var(--vhs-magenta); }
.tier.t3 { border-color: var(--vhs-red); }
.tier.t4 {
  border-color: var(--vhs-red);
  background: var(--vhs-red);
  color: var(--vhs-ink);
}
.tier.t4 .sub { color: rgba(244, 233, 211, 0.85); }

/* ----- Steps ----- */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.2rem;
}
.step {
  padding: 1.4rem;
  background: var(--vhs-surface);
  border-radius: 4px;
  position: relative;
}
.step .num {
  position: absolute;
  top: -14px;
  left: -8px;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--vhs-cyan);
  color: var(--vhs-base);
  font-family: var(--font-display);
  font-size: 1.4rem;
  border-radius: 50%;
  transform: rotate(-8deg);
}
.step h3 { font-family: var(--font-body); font-weight: 700; font-size: 1.05rem; margin-bottom: 0.4rem; }
.step p { font-size: 0.92rem; color: rgba(244, 233, 211, 0.78); margin: 0; }

/* ----- Privacy summary ----- */
.privacy-summary {
  margin-top: 1.5rem;
  padding: 1.6rem;
  background: var(--vhs-surface);
  border: 1px dashed rgba(244, 233, 211, 0.3);
  border-radius: 4px;
}
.privacy-summary ul {
  list-style: none;
  padding: 0;
  margin: 0 0 1rem;
}
.privacy-summary li {
  padding: 0.4rem 0 0.4rem 1.6rem;
  position: relative;
}
.privacy-summary li::before {
  content: "✓";
  color: var(--vhs-cyan);
  font-weight: 900;
  position: absolute;
  left: 0;
}

/* ----- Footer ----- */
.footer {
  margin-top: 4rem;
  padding: 3rem 1.5rem 2rem;
  border-top: 1px dashed rgba(244, 233, 211, 0.2);
  text-align: center;
  color: rgba(244, 233, 211, 0.55);
  font-size: 0.9rem;
  font-family: var(--font-mono);
}
.footer-links {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}
.footer-links a { color: rgba(244, 233, 211, 0.7); }

/* ----- Privacy page ----- */
.legal {
  max-width: 760px;
  margin: 0 auto;
  padding: 3rem 1.5rem 4rem;
}
.legal h1 { font-size: 2.4rem; }
.legal h2 { font-size: 1.4rem; margin-top: 2rem; color: var(--vhs-red); }
.legal h3 { font-size: 1.1rem; margin-top: 1.4rem; }
.legal p, .legal li { color: rgba(244, 233, 211, 0.88); }
.legal ul { padding-left: 1.4rem; }
.legal .updated {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: rgba(244, 233, 211, 0.5);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

@media (max-width: 600px) {
  .hero { padding: 2.5rem 1rem 2rem; }
  .nav-inner { padding: 0.7rem 1rem; }
  .nav-brand { font-size: 1.1rem; }
  .lang-switch { font-size: 0.75rem; }
  .lang-switch a { padding: 0.2rem 0.4rem; }
  .qr-block img.qr { width: 84px; height: 84px; }
  .qr-block .qr-caption { font-size: 0.75rem; }
}