/* ===========================================================
   Getbits JPYC Section - Shared Styles
   © 2016-2026 getbits.net
   =========================================================== */

@import url('https://fonts.googleapis.com/css2?family=Zen+Kaku+Gothic+New:wght@400;500;700;900&family=Noto+Sans+JP:wght@400;500;700&family=JetBrains+Mono:wght@400;600&display=swap');

:root {
  /* Color tokens */
  --bg-base: #0a0a0f;
  --bg-elevated: #14141c;
  --bg-card: #1a1a24;
  --border: #2a2a35;
  --border-strong: #3a3a48;

  --text-primary: #f0f0f5;
  --text-secondary: #b0b0c0;
  --text-muted: #707080;

  --jpyc-gold: #FFD700;
  --jpyc-gold-dim: #c9a800;
  --jpyc-gold-glow: rgba(255, 215, 0, 0.15);

  --btc-orange: #F7931A;
  --accent-mint: #00D4AA;
  --accent-red: #FF4757;

  --gradient-jpyc: linear-gradient(135deg, #FFD700 0%, #FFA500 100%);
  --gradient-bg: radial-gradient(ellipse at top, rgba(255, 215, 0, 0.08) 0%, transparent 50%);

  /* Spacing */
  --container-max: 1200px;
  --container-narrow: 880px;
  --section-pad: clamp(3rem, 8vw, 6rem);
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg-base);
  color: var(--text-primary);
  font-family: 'Noto Sans JP', system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  background-image: var(--gradient-bg);
  background-attachment: fixed;
  min-height: 100vh;
  overflow-x: hidden;
}

/* === Typography === */
h1, h2, h3, h4 {
  font-family: 'Zen Kaku Gothic New', sans-serif;
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: -0.02em;
}
h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.25rem); margin-bottom: 1rem; }
h3 { font-size: clamp(1.15rem, 2vw, 1.4rem); margin-bottom: 0.5rem; }
h4 { font-size: 1rem; }

p { color: var(--text-secondary); margin-bottom: 1rem; }
a { color: var(--jpyc-gold); text-decoration: none; transition: opacity 0.2s; }
a:hover { opacity: 0.75; }

code, .mono {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9em;
  background: var(--bg-card);
  padding: 0.15em 0.4em;
  border-radius: 4px;
  border: 1px solid var(--border);
}

/* === Layout === */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.25rem;
}
.narrow { max-width: var(--container-narrow); margin: 0 auto; }

/* === Header / Nav === */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.site-nav-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0.9rem 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}
.brand {
  font-weight: 900;
  font-size: 1.1rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.brand .symbol { color: var(--btc-orange); }
.nav-trail {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
}
.nav-trail a { color: var(--text-secondary); }
.nav-trail a:hover { color: var(--jpyc-gold); }
.nav-trail .sep { margin: 0 0.4rem; opacity: 0.5; }

/* === Hero === */
.hero {
  padding: clamp(3rem, 8vw, 5rem) 1.25rem clamp(2rem, 5vw, 3rem);
  position: relative;
  overflow: hidden;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--jpyc-gold);
  background: var(--jpyc-gold-glow);
  border: 1px solid var(--jpyc-gold-dim);
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  margin-bottom: 1.5rem;
}
.hero-eyebrow::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--jpyc-gold);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--jpyc-gold);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}
.hero h1 {
  margin-bottom: 1.25rem;
  background: linear-gradient(180deg, #ffffff 0%, #b0b0c0 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero h1 .gold {
  background: var(--gradient-jpyc);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}
.hero-lead {
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  color: var(--text-secondary);
  max-width: 640px;
  line-height: 1.8;
}

/* === Section === */
section { padding: var(--section-pad) 1.25rem; }
.section-head { margin-bottom: 2.5rem; }
.section-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  color: var(--jpyc-gold);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
  display: block;
}
.section-lead {
  color: var(--text-secondary);
  max-width: 640px;
  font-size: 1.02rem;
}

/* === Cards === */
.card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.75rem;
  transition: border-color 0.2s, transform 0.2s;
  position: relative;
  overflow: hidden;
}
.card:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
}
.card.featured {
  border-color: var(--jpyc-gold-dim);
  background: linear-gradient(180deg, var(--bg-elevated) 0%, rgba(255, 215, 0, 0.04) 100%);
}
.card-icon {
  font-size: 2rem;
  margin-bottom: 0.75rem;
  display: block;
}
.card h3 { color: var(--text-primary); }
.card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 1rem;
}
.tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  background: var(--bg-card);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}
.tag.gold { color: var(--jpyc-gold); border-color: var(--jpyc-gold-dim); background: var(--jpyc-gold-glow); }
.tag.mint { color: var(--accent-mint); border-color: rgba(0, 212, 170, 0.3); background: rgba(0, 212, 170, 0.08); }

/* === Grid === */
.grid {
  display: grid;
  gap: 1.25rem;
}
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

/* === Pillar links (Hub) === */
.pillars {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
}
.pillar {
  display: block;
  padding: 1.5rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text-primary);
  transition: all 0.2s;
  position: relative;
}
.pillar:hover {
  border-color: var(--jpyc-gold);
  background: var(--bg-card);
  opacity: 1;
}
.pillar:hover .pillar-arrow { transform: translateX(4px); }
.pillar-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--jpyc-gold);
  letter-spacing: 0.1em;
}
.pillar-title {
  font-family: 'Zen Kaku Gothic New', sans-serif;
  font-weight: 700;
  font-size: 1.25rem;
  margin: 0.5rem 0;
}
.pillar-desc { color: var(--text-secondary); font-size: 0.9rem; margin: 0; }
.pillar-arrow {
  display: inline-block;
  margin-top: 0.75rem;
  color: var(--jpyc-gold);
  font-family: 'JetBrains Mono', monospace;
  transition: transform 0.2s;
}

/* === Steps === */
.steps {
  counter-reset: step;
  display: grid;
  gap: 1rem;
}
.step {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.5rem 1.5rem 1.5rem 4.5rem;
  position: relative;
  counter-increment: step;
}
.step::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 1.25rem;
  top: 1.5rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--jpyc-gold);
}
.step h3 { margin-bottom: 0.5rem; }
.step p { margin-bottom: 0.5rem; }
.step ul { margin-left: 1.25rem; color: var(--text-secondary); }
.step ul li { margin-bottom: 0.35rem; }

/* === Tables === */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-elevated);
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--border);
  font-size: 0.92rem;
}
th, td {
  padding: 0.85rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
th {
  background: var(--bg-card);
  color: var(--text-primary);
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
td { color: var(--text-secondary); }
tr:last-child td { border-bottom: none; }

/* === CTA Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid transparent;
  transition: all 0.2s;
  font-family: 'Noto Sans JP', sans-serif;
}
.btn-primary {
  background: var(--gradient-jpyc);
  color: #000;
}
.btn-primary:hover {
  opacity: 1;
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(255, 215, 0, 0.25);
}
.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border-strong);
}
.btn-secondary:hover { border-color: var(--jpyc-gold); color: var(--jpyc-gold); }
.btn-row { display: flex; gap: 0.75rem; flex-wrap: wrap; margin-top: 1.5rem; }

/* === Callout / Notice === */
.callout {
  padding: 1.25rem 1.5rem;
  border-radius: 10px;
  border-left: 3px solid var(--jpyc-gold);
  background: var(--jpyc-gold-glow);
  margin: 1.5rem 0;
}
.callout.warn {
  border-left-color: var(--accent-red);
  background: rgba(255, 71, 87, 0.08);
}
.callout.info {
  border-left-color: var(--accent-mint);
  background: rgba(0, 212, 170, 0.08);
}
.callout-title {
  font-weight: 700;
  margin-bottom: 0.4rem;
  color: var(--text-primary);
}
.callout p { margin: 0; color: var(--text-secondary); }

/* === Stats === */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1rem;
  margin: 2rem 0;
}
.stat {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  padding: 1.25rem;
  border-radius: 10px;
}
.stat-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--jpyc-gold);
  line-height: 1;
}
.stat-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 0.5rem;
}

/* === Related links === */
.related {
  border-top: 1px solid var(--border);
  margin-top: 3rem;
  padding-top: 2.5rem;
}
.related-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 1rem;
}

/* === Footer === */
.site-foot {
  border-top: 1px solid var(--border);
  padding: 3rem 1.25rem 2rem;
  margin-top: 4rem;
  background: var(--bg-elevated);
}
.foot-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2.5rem;
}
.foot-brand p { font-size: 0.88rem; }
.foot-col h4 {
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1rem;
}
.foot-col ul { list-style: none; }
.foot-col li { margin-bottom: 0.5rem; }
.foot-col a { color: var(--text-secondary); font-size: 0.9rem; }
.foot-col a:hover { color: var(--jpyc-gold); }
.foot-legal {
  max-width: var(--container-max);
  margin: 2.5rem auto 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
@media (max-width: 720px) {
  .foot-inner { grid-template-columns: 1fr; gap: 2rem; }
}

/* === Misc === */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
  margin: 3rem 0;
}

ul.bullets, ol.numbered {
  margin: 1rem 0 1.5rem 1.5rem;
  color: var(--text-secondary);
}
ul.bullets li, ol.numbered li { margin-bottom: 0.5rem; }
ul.bullets li::marker { color: var(--jpyc-gold); }
ol.numbered li::marker { color: var(--jpyc-gold); font-family: 'JetBrains Mono', monospace; }

strong { color: var(--text-primary); font-weight: 700; }
em { color: var(--jpyc-gold); font-style: normal; font-weight: 500; }