/* ===============================================
   MEMO VOLT BLOG — SHARED STYLESHEET
   Matches main site dark premium aesthetic
=============================================== */

:root {
  --color-bg: #0a0a0f;
  --color-surface: #111118;
  --color-surface-2: #16161f;
  --color-border: rgba(255,255,255,0.07);
  --color-text: #f0f0f5;
  --color-text-muted: #9090a8;
  --color-text-faint: #606078;
  --color-accent: #7c6cfc;
  --color-accent-2: #a78bfa;
  --color-gold: #f0b429;
  --color-green: #34d399;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --space-xs: 0.4rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-heading: 'Outfit', 'Inter', system-ui, sans-serif;
  --max-width: 780px;
  --max-width-wide: 1160px;
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

/* ── SITE HEADER ── */
.blog-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(10,10,15,0.88);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  padding: 0 var(--space-xl);
}
.blog-nav {
  max-width: var(--max-width-wide);
  margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  height: 64px; gap: var(--space-xl);
}
.nav-logo {
  display: flex; align-items: center; gap: 0.4rem;
  text-decoration: none; font-family: var(--font-heading);
  font-size: 1.25rem; font-weight: 800; color: var(--color-text);
}
.logo-icon { color: var(--color-accent); }
.nav-links { display: flex; gap: var(--space-xl); list-style: none; }
.nav-links a { color: var(--color-text-muted); text-decoration: none; font-size: 0.9rem; transition: color 0.2s; }
.nav-links a:hover { color: var(--color-text); }
.btn-nav-cta {
  background: linear-gradient(135deg, var(--color-accent), #9f8dff);
  color: #fff; text-decoration: none; padding: 0.5rem 1.2rem;
  border-radius: var(--radius-md); font-size: 0.85rem; font-weight: 600;
  transition: opacity 0.2s; white-space: nowrap;
}
.btn-nav-cta:hover { opacity: 0.88; }

/* ── BREADCRUMB ── */
.breadcrumb-wrap { background: var(--color-surface); border-bottom: 1px solid var(--color-border); }
.breadcrumb {
  max-width: var(--max-width-wide); margin: 0 auto;
  padding: 0.6rem var(--space-xl);
  font-size: 0.8rem; color: var(--color-text-faint);
  display: flex; align-items: center; gap: 0.4rem; flex-wrap: wrap;
}
.breadcrumb a { color: var(--color-text-muted); text-decoration: none; }
.breadcrumb a:hover { color: var(--color-accent-2); }
.breadcrumb-sep { opacity: 0.4; }

/* ── ARTICLE HERO ── */
.article-hero {
  background: linear-gradient(160deg, var(--color-surface) 0%, var(--color-bg) 100%);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-3xl) var(--space-xl) var(--space-2xl);
}
.article-hero-inner {
  max-width: var(--max-width); margin: 0 auto;
}
.article-category {
  display: inline-flex; align-items: center; gap: 0.4rem;
  background: rgba(124,108,252,0.12); border: 1px solid rgba(124,108,252,0.25);
  color: var(--color-accent-2); font-size: 0.78rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.08em;
  padding: 0.3rem 0.8rem; border-radius: 99px; margin-bottom: var(--space-md);
  text-decoration: none;
}
.article-title {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800; line-height: 1.2;
  color: var(--color-text); margin-bottom: var(--space-md);
}
.article-subtitle {
  font-size: 1.1rem; color: var(--color-text-muted); line-height: 1.65;
  margin-bottom: var(--space-lg);
}
.article-meta {
  display: flex; align-items: center; gap: var(--space-lg);
  flex-wrap: wrap; font-size: 0.82rem; color: var(--color-text-faint);
}
.article-meta span { display: flex; align-items: center; gap: 0.3rem; }

/* ── MAIN LAYOUT ── */
.article-layout {
  max-width: var(--max-width-wide); margin: 0 auto;
  padding: var(--space-3xl) var(--space-xl);
  display: grid; grid-template-columns: 1fr 300px; gap: var(--space-3xl);
  align-items: start;
}
@media (max-width: 900px) {
  .article-layout { grid-template-columns: 1fr; }
  .article-sidebar { order: -1; }
}

/* ── ARTICLE BODY ── */
.article-body { min-width: 0; }
.article-body h2 {
  font-family: var(--font-heading); font-size: 1.55rem; font-weight: 800;
  color: var(--color-text); margin: var(--space-2xl) 0 var(--space-md);
  padding-top: var(--space-md); border-top: 1px solid var(--color-border);
}
.article-body h2:first-child { margin-top: 0; border-top: none; padding-top: 0; }
.article-body h3 {
  font-family: var(--font-heading); font-size: 1.15rem; font-weight: 700;
  color: var(--color-text); margin: var(--space-xl) 0 var(--space-sm);
}
.article-body p { color: var(--color-text-muted); margin-bottom: var(--space-md); font-size: 1rem; }
.article-body ul, .article-body ol {
  color: var(--color-text-muted); padding-left: 1.4rem;
  margin-bottom: var(--space-md); display: flex; flex-direction: column; gap: 0.4rem;
}
.article-body li { font-size: 0.97rem; line-height: 1.7; }
.article-body strong { color: var(--color-text); font-weight: 600; }
.article-body a { color: var(--color-accent-2); text-decoration: underline; text-underline-offset: 3px; }
.article-body a:hover { color: var(--color-accent); }
.article-body blockquote {
  border-left: 3px solid var(--color-accent);
  padding: var(--space-md) var(--space-lg);
  background: rgba(124,108,252,0.06);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: var(--space-xl) 0; color: var(--color-text-muted); font-style: italic;
}

/* ── KEY TAKEAWAY BOX ── */
.key-takeaway {
  background: linear-gradient(135deg, rgba(52,211,153,0.08), rgba(52,211,153,0.03));
  border: 1px solid rgba(52,211,153,0.2); border-radius: var(--radius-lg);
  padding: var(--space-lg) var(--space-xl); margin: var(--space-xl) 0;
}
.key-takeaway-label {
  font-size: 0.75rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.08em; color: var(--color-green); margin-bottom: var(--space-sm);
}
.key-takeaway p { color: var(--color-text); margin: 0; font-size: 0.97rem; }

/* ── CTA BOX ── */
.article-cta {
  background: linear-gradient(135deg, rgba(124,108,252,0.12), rgba(124,108,252,0.05));
  border: 1px solid rgba(124,108,252,0.25); border-radius: var(--radius-lg);
  padding: var(--space-xl) var(--space-2xl); margin: var(--space-2xl) 0;
  text-align: center;
}
.article-cta h3 {
  font-family: var(--font-heading); font-size: 1.25rem; font-weight: 800;
  color: var(--color-text); margin-bottom: var(--space-sm);
}
.article-cta p { color: var(--color-text-muted); font-size: 0.95rem; margin-bottom: var(--space-lg); }
.btn-cta {
  display: inline-block; background: linear-gradient(135deg, var(--color-accent), #9f8dff);
  color: #fff; text-decoration: none; padding: 0.85rem 2rem;
  border-radius: var(--radius-md); font-weight: 700; font-size: 0.95rem;
  transition: opacity 0.2s, transform 0.2s;
}
.btn-cta:hover { opacity: 0.9; transform: translateY(-1px); }
.btn-cta-note { font-size: 0.75rem; color: var(--color-text-faint); margin-top: var(--space-sm); }

/* ── FACT BOX ── */
.fact-box {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: var(--space-lg) var(--space-xl);
  margin: var(--space-xl) 0;
}
.fact-box-title {
  font-size: 0.75rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.08em; color: var(--color-accent-2); margin-bottom: var(--space-md);
}
.fact-box ul { padding-left: 1.2rem; }
.fact-box li { font-size: 0.92rem; color: var(--color-text-muted); line-height: 1.65; }

/* ── SIDEBAR ── */
.article-sidebar { position: sticky; top: 80px; display: flex; flex-direction: column; gap: var(--space-lg); }
.sidebar-card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: var(--space-lg);
}
.sidebar-card-title {
  font-family: var(--font-heading); font-size: 0.85rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--color-text-faint); margin-bottom: var(--space-md);
}
.toc-list { list-style: none; display: flex; flex-direction: column; gap: 0.5rem; }
.toc-list a {
  color: var(--color-text-muted); text-decoration: none; font-size: 0.88rem;
  line-height: 1.5; padding: 0.25rem 0; border-left: 2px solid transparent;
  padding-left: 0.75rem; display: block; transition: color 0.2s, border-color 0.2s;
}
.toc-list a:hover { color: var(--color-accent-2); border-color: var(--color-accent); }
.sidebar-cta-box {
  background: linear-gradient(135deg, rgba(124,108,252,0.1), rgba(124,108,252,0.04));
  border: 1px solid rgba(124,108,252,0.2); border-radius: var(--radius-lg);
  padding: var(--space-lg); text-align: center;
}
.sidebar-cta-box img { width: 100px; height: 100px; object-fit: contain; margin-bottom: var(--space-sm); }
.sidebar-cta-box h4 { font-family: var(--font-heading); font-size: 1rem; font-weight: 800; color: var(--color-text); margin-bottom: 0.4rem; }
.sidebar-cta-box p { font-size: 0.82rem; color: var(--color-text-muted); margin-bottom: var(--space-md); }
.btn-sidebar {
  display: block; background: linear-gradient(135deg, var(--color-accent), #9f8dff);
  color: #fff; text-decoration: none; padding: 0.65rem 1rem;
  border-radius: var(--radius-md); font-weight: 700; font-size: 0.85rem;
  transition: opacity 0.2s;
}
.btn-sidebar:hover { opacity: 0.88; }

/* ── RELATED ARTICLES ── */
.related-section {
  background: var(--color-surface); border-top: 1px solid var(--color-border);
  padding: var(--space-3xl) var(--space-xl);
}
.related-inner { max-width: var(--max-width-wide); margin: 0 auto; }
.related-title {
  font-family: var(--font-heading); font-size: 1.4rem; font-weight: 800;
  color: var(--color-text); margin-bottom: var(--space-xl);
}
.related-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: var(--space-lg);
}
.related-card {
  background: var(--color-surface-2); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: var(--space-lg);
  text-decoration: none; transition: border-color 0.2s, transform 0.2s;
  display: block;
}
.related-card:hover { border-color: rgba(124,108,252,0.35); transform: translateY(-2px); }
.related-card-cat {
  font-size: 0.72rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.07em; color: var(--color-accent-2); margin-bottom: 0.5rem;
}
.related-card h3 { font-family: var(--font-heading); font-size: 1rem; font-weight: 700; color: var(--color-text); margin-bottom: 0.4rem; line-height: 1.4; }
.related-card p { font-size: 0.85rem; color: var(--color-text-muted); line-height: 1.5; }

/* ── BLOG INDEX ── */
.blog-hero {
  background: linear-gradient(160deg, var(--color-surface) 0%, var(--color-bg) 100%);
  padding: var(--space-4xl) var(--space-xl) var(--space-3xl);
  text-align: center; border-bottom: 1px solid var(--color-border);
}
.blog-hero h1 { font-family: var(--font-heading); font-size: clamp(2rem,5vw,3.5rem); font-weight: 900; color: var(--color-text); margin-bottom: var(--space-md); }
.blog-hero p { font-size: 1.1rem; color: var(--color-text-muted); max-width: 560px; margin: 0 auto; }
.cluster-section { padding: var(--space-3xl) var(--space-xl); }
.cluster-inner { max-width: var(--max-width-wide); margin: 0 auto; }
.cluster-label {
  display: inline-flex; align-items: center; gap: 0.4rem;
  background: rgba(124,108,252,0.1); border: 1px solid rgba(124,108,252,0.2);
  color: var(--color-accent-2); font-size: 0.75rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.08em;
  padding: 0.25rem 0.75rem; border-radius: 99px; margin-bottom: var(--space-md);
}
.cluster-title { font-family: var(--font-heading); font-size: 1.6rem; font-weight: 800; color: var(--color-text); margin-bottom: var(--space-sm); }
.cluster-desc { font-size: 0.95rem; color: var(--color-text-muted); margin-bottom: var(--space-xl); max-width: 600px; }
.pillar-card {
  background: linear-gradient(135deg, rgba(124,108,252,0.08), rgba(124,108,252,0.03));
  border: 1px solid rgba(124,108,252,0.2); border-radius: var(--radius-xl);
  padding: var(--space-xl) var(--space-2xl); margin-bottom: var(--space-lg);
  text-decoration: none; display: block; transition: border-color 0.2s, transform 0.2s;
}
.pillar-card:hover { border-color: rgba(124,108,252,0.45); transform: translateY(-2px); }
.pillar-card-badge { font-size: 0.72rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--color-accent-2); margin-bottom: 0.5rem; }
.pillar-card h3 { font-family: var(--font-heading); font-size: 1.3rem; font-weight: 800; color: var(--color-text); margin-bottom: 0.4rem; }
.pillar-card p { font-size: 0.92rem; color: var(--color-text-muted); }
.spokes-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: var(--space-md); margin-bottom: var(--space-3xl); }
.spoke-card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: var(--space-md) var(--space-lg);
  text-decoration: none; transition: border-color 0.2s;
}
.spoke-card:hover { border-color: rgba(124,108,252,0.3); }
.spoke-card h4 { font-family: var(--font-heading); font-size: 0.95rem; font-weight: 700; color: var(--color-text); margin-bottom: 0.3rem; }
.spoke-card p { font-size: 0.82rem; color: var(--color-text-muted); line-height: 1.5; }
.cluster-divider { border: none; border-top: 1px solid var(--color-border); margin: 0; }

/* ── FOOTER ── */
.blog-footer {
  background: var(--color-surface); border-top: 1px solid var(--color-border);
  padding: var(--space-2xl) var(--space-xl); text-align: center;
}
.blog-footer p { font-size: 0.82rem; color: var(--color-text-faint); margin-bottom: 0.4rem; }
.blog-footer a { color: var(--color-text-muted); text-decoration: none; }
.blog-footer a:hover { color: var(--color-accent-2); }
.footer-disclaimer { max-width: 700px; margin: var(--space-md) auto 0; font-size: 0.78rem; color: var(--color-text-faint); line-height: 1.6; }

/* ── UTILITIES ── */
@media (max-width: 640px) {
  .article-hero { padding: var(--space-2xl) var(--space-md); }
  .article-layout { padding: var(--space-xl) var(--space-md); }
  .article-cta { padding: var(--space-lg); }
  .blog-nav .nav-links { display: none; }
}