/* AX Boost — Insights/Article shared styles
 * Inherits design tokens from the main LP.
 * Used by: /insights/ hub + /insights/<slug>/ article pages */

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

:root {
  --green: #00FF41;
  --green-dim: #00CC33;
  --green-dark: #003310;
  --white: #FFFFFF;
  --gray-1: #CCCCCC;
  --gray-2: #888888;
  --gray-3: #444444;
  --gray-4: #1a1a1a;
  --black: #000000;
  --bg: #060606;
  --mono: 'JetBrains Mono', 'Courier New', monospace;
  --sans: 'Noto Sans JP', 'Inter', sans-serif;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--white);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--black); }
::-webkit-scrollbar-thumb { background: var(--green-dim); }

a { color: inherit; text-decoration: none; }

/* ─── HEADER ─── */
header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 48px;
  height: 64px;
  background: rgba(6,6,6,0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-4);
}

.logo {
  font-family: var(--mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.05em;
}
.logo span { color: var(--green); }

.header-nav { display: flex; gap: 12px; align-items: center; }
.header-nav .nav-link {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray-1);
  padding: 9px 12px;
  transition: color 0.2s;
}
.header-nav .nav-link:hover { color: var(--green); }
.header-nav .nav-link.active { color: var(--green); }

.btn {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 9px 20px;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
  display: inline-block;
}
.btn-outline {
  background: transparent;
  border: 1px solid var(--green);
  color: var(--green);
}
.btn-outline:hover { background: var(--green); color: var(--black); }
.btn-fill { background: var(--green); color: var(--black); }
.btn-fill:hover { background: var(--white); }

/* ─── PAGE LAYOUT ─── */
main {
  padding-top: 64px;
  min-height: 100vh;
}

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 48px;
}
.container-narrow {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 48px;
}

/* ─── PAGE HERO (HUB & ARTICLE COMMON) ─── */
.page-hero {
  padding: 120px 0 80px;
  border-bottom: 1px solid var(--gray-4);
}
.page-hero-label {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--green);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  margin-bottom: 24px;
}
.page-hero-title {
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 24px;
}
.page-hero-sub {
  font-size: 17px;
  color: var(--gray-1);
  font-weight: 300;
  max-width: 640px;
  line-height: 1.8;
}

/* ─── BREADCRUMB ─── */
.breadcrumb {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gray-2);
  margin-bottom: 16px;
}
.breadcrumb a { color: var(--gray-2); transition: color 0.2s; }
.breadcrumb a:hover { color: var(--green); }
.breadcrumb-sep { margin: 0 12px; color: var(--gray-3); }

/* ─── HUB: ARTICLE LIST ─── */
.article-list { padding: 80px 0 120px; }
.article-list-section {
  margin-bottom: 64px;
}
.article-list-heading {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--green);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--gray-3);
  margin-bottom: 32px;
}

.article-card {
  display: grid;
  grid-template-columns: 60px 1fr auto;
  gap: 32px;
  align-items: baseline;
  padding: 32px 0;
  border-bottom: 1px solid var(--gray-4);
  transition: padding 0.2s;
}
.article-card:hover {
  padding-left: 8px;
}
.article-card-num {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--green);
  letter-spacing: 0.2em;
}
.article-card-title {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.4;
  margin-bottom: 8px;
  color: var(--white);
  transition: color 0.2s;
}
.article-card:hover .article-card-title { color: var(--green); }
.article-card-excerpt {
  font-size: 14px;
  color: var(--gray-1);
  font-weight: 300;
  line-height: 1.7;
  max-width: 560px;
}
.article-card-meta {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--gray-2);
  letter-spacing: 0.1em;
  white-space: nowrap;
}

/* Empty state for hub */
.hub-empty {
  text-align: center;
  padding: 80px 0;
  color: var(--gray-2);
}
.hub-empty-title {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--green);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.hub-empty-text {
  font-size: 15px;
  color: var(--gray-1);
  font-weight: 300;
  line-height: 1.8;
  max-width: 480px;
  margin: 0 auto;
}

/* ─── ARTICLE: BODY TYPOGRAPHY ─── */
.article-body {
  padding: 64px 0 96px;
  font-size: 16px;
  line-height: 1.9;
  color: var(--gray-1);
}
.article-body h2 {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--white);
  margin: 64px 0 24px;
  padding-top: 48px;
  border-top: 1px solid var(--gray-4);
  line-height: 1.3;
}
.article-body h2:first-child {
  border-top: none;
  padding-top: 0;
  margin-top: 0;
}
.article-body h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--white);
  margin: 40px 0 16px;
  line-height: 1.4;
}
.article-body h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--white);
  margin: 32px 0 12px;
}
.article-body p { margin-bottom: 24px; }
.article-body strong { color: var(--white); font-weight: 700; }
.article-body em { color: var(--green); font-style: normal; }
.article-body ul, .article-body ol {
  margin: 0 0 24px 24px;
  padding-left: 8px;
}
.article-body li { margin-bottom: 8px; }
.article-body a {
  color: var(--green);
  border-bottom: 1px solid var(--green-dim);
  transition: opacity 0.2s;
}
.article-body a:hover { opacity: 0.7; }

.article-body blockquote {
  border-left: 3px solid var(--green);
  padding: 8px 24px;
  margin: 32px 0;
  color: var(--gray-1);
  font-style: italic;
}

.article-body code {
  font-family: var(--mono);
  background: var(--gray-4);
  padding: 2px 6px;
  border-radius: 2px;
  font-size: 13px;
  color: var(--green);
}
.article-body pre {
  background: var(--gray-4);
  padding: 24px;
  margin: 32px 0;
  overflow-x: auto;
  border-left: 3px solid var(--green);
}
.article-body pre code {
  background: none;
  padding: 0;
  color: var(--gray-1);
  font-size: 13px;
  line-height: 1.7;
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 32px 0;
  font-size: 14px;
}
.article-body th, .article-body td {
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid var(--gray-3);
}
.article-body th {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--green);
  background: rgba(0, 255, 65, 0.04);
}
.article-body td { color: var(--gray-1); }

.article-body hr {
  border: none;
  border-top: 1px solid var(--gray-4);
  margin: 48px 0;
}

/* ─── INLINE CTA (in articles) ─── */
.inline-cta {
  background: linear-gradient(135deg, var(--green-dark), transparent);
  border: 1px solid var(--green-dim);
  padding: 40px 32px;
  margin: 64px 0;
  text-align: center;
}
.inline-cta-text {
  font-size: 17px;
  color: var(--white);
  margin-bottom: 24px;
  line-height: 1.6;
  font-weight: 500;
}
.inline-cta .btn { font-size: 13px; padding: 12px 28px; }

/* ─── ARTICLE FOOTER ─── */
.article-footer {
  padding: 64px 0;
  border-top: 1px solid var(--gray-4);
}
.article-footer-cta {
  text-align: center;
  margin-bottom: 64px;
}
.article-footer-cta-label {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--green);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.article-footer-cta-title {
  font-size: 28px;
  font-weight: 900;
  margin-bottom: 24px;
  line-height: 1.4;
}
.article-footer-cta-sub {
  color: var(--gray-1);
  margin-bottom: 32px;
}

/* ─── FOOTER ─── */
footer {
  border-top: 1px solid var(--gray-4);
  padding: 32px 48px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--gray-2);
  letter-spacing: 0.1em;
}
.footer-logo {
  font-size: 14px;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.05em;
}
.footer-logo span { color: var(--green); }
.footer-copy { text-transform: uppercase; }

/* ─── RESPONSIVE ─── */
@media (max-width: 768px) {
  header { padding: 0 24px; }
  .container, .container-narrow { padding: 0 24px; }
  .page-hero { padding: 96px 0 56px; }
  .article-card {
    grid-template-columns: 40px 1fr;
    gap: 16px;
  }
  .article-card-meta {
    grid-column: 1 / -1;
    margin-top: 4px;
  }
  .article-body { padding: 40px 0 64px; }
  footer { padding: 24px; flex-direction: column; align-items: flex-start; }
}