/* =========================================================
   LANTERN SHARED DESIGN SYSTEM
   Used by: comparison pages, glossary, vertical guides, etc.
   Sister to: index.html (the homepage has embedded styles)
   ========================================================= */

/* RESET */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
a { color: inherit; text-decoration: none; }

/* DESIGN TOKENS */
:root {
  --bg: #FAFAF7;
  --surface: #FFFFFF;
  --surface-alt: #F5F4EE;
  --surface-soft: #F0EFE8;
  --text: #1A1A1A;
  --text-2: #5C5C58;
  --text-3: #8B8B85;
  --border: #E5E4DD;
  --border-soft: #EFEEE7;
  --accent: #15803D;
  --accent-soft: #DCFCE7;
  --accent-text: #14532D;
  --warm: #B45309;
  --warm-soft: #FEF3C7;
  --coral: #C2410C;
  --coral-soft: #FFEDD5;
  --shadow-sm: 0 1px 2px rgba(26,26,26,0.04), 0 1px 1px rgba(26,26,26,0.02);
  --shadow-md: 0 4px 6px -1px rgba(26,26,26,0.06), 0 2px 4px -2px rgba(26,26,26,0.04);
  --shadow-lg: 0 10px 30px -8px rgba(26,26,26,0.10), 0 4px 8px -4px rgba(26,26,26,0.04);
  --shadow-xl: 0 20px 50px -12px rgba(26,26,26,0.14), 0 8px 16px -8px rgba(26,26,26,0.06);
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
}

/* TYPOGRAPHY */
.serif { font-family: 'Instrument Serif', Georgia, serif; font-weight: 400; letter-spacing: -0.01em; }
.mono  { font-family: 'IBM Plex Mono', ui-monospace, monospace; font-weight: 400; letter-spacing: 0.02em; }

.eyebrow {
  font-family: 'IBM Plex Mono', ui-monospace, monospace;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-3);
}

h1 { font-family: 'Instrument Serif', serif; font-weight: 400; letter-spacing: -0.02em; line-height: 1.05; color: var(--text); }
h2 { font-family: 'Instrument Serif', serif; font-weight: 400; letter-spacing: -0.015em; line-height: 1.1; color: var(--text); }
h3 { font-weight: 600; letter-spacing: -0.01em; color: var(--text); }
h4 { font-weight: 600; letter-spacing: -0.005em; color: var(--text); }
p { color: var(--text-2); }

/* LAYOUT */
.container { max-width: 1200px; margin: 0 auto; padding: 0 32px; }
.container-narrow { max-width: 880px; margin: 0 auto; padding: 0 32px; }
.container-tight  { max-width: 680px; margin: 0 auto; padding: 0 32px; }
section { padding: 80px 0; }
@media (max-width: 768px) {
  section { padding: 56px 0; }
  .container, .container-narrow, .container-tight { padding: 0 20px; }
}

/* NAV */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 250, 247, 0.85);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}
.nav.scrolled { border-bottom-color: var(--border-soft); }
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 17px;
  letter-spacing: -0.01em;
  color: var(--text);
}
.logo-mark {
  width: 22px;
  height: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text);
}
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a { color: var(--text-2); font-size: 14px; transition: color 0.15s ease; }
.nav-links a:hover { color: var(--text); }
@media (max-width: 768px) {
  .nav-links a:not(.btn) { display: none; }
}

/* BUTTONS */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 18px;
  font-size: 14px;
  font-weight: 500;
  border-radius: 999px;
  transition: all 0.15s ease;
  white-space: nowrap;
  letter-spacing: -0.005em;
}
.btn-primary { background: var(--text); color: var(--bg); }
.btn-primary:hover { background: #2a2a2a; transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn-ghost { background: transparent; color: var(--text); padding: 11px 16px; }
.btn-ghost:hover { background: var(--surface-alt); }
.btn-outline { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn-outline:hover { background: var(--surface-alt); }
.btn-arrow { transition: transform 0.15s ease; }
.btn:hover .btn-arrow { transform: translateX(2px); }

/* COMPARISON-PAGE HERO */
.cp-hero {
  padding: 64px 0 32px;
  text-align: center;
  background-image: radial-gradient(circle at 1px 1px, rgba(26,26,26,0.10) 1.2px, transparent 1.5px);
  background-size: 24px 24px;
  position: relative;
}
.cp-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 50% at 50% 40%, var(--bg) 0%, rgba(250,250,247,0.7) 50%, transparent 80%);
  pointer-events: none;
  z-index: 1;
}
.cp-hero > * { position: relative; z-index: 2; }
.cp-breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-bottom: 24px;
  font-size: 12px;
  color: var(--text-3);
  font-family: 'IBM Plex Mono', monospace;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.cp-breadcrumb a { color: var(--text-3); transition: color 0.15s ease; }
.cp-breadcrumb a:hover { color: var(--text); }
.cp-breadcrumb-sep { color: var(--border); }

.cp-hero h1 {
  font-size: clamp(40px, 6vw, 64px);
  max-width: 880px;
  margin: 0 auto 20px;
}
.cp-hero h1 em { font-style: italic; color: var(--text-2); }
.cp-hero-sub {
  font-size: 18px;
  line-height: 1.5;
  color: var(--text-2);
  max-width: 620px;
  margin: 0 auto 32px;
}
.cp-hero-meta {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--text-3);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-top: 16px;
}

/* TL;DR BANNER */
.tldr {
  max-width: 780px;
  margin: 0 auto 40px;
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  box-shadow: var(--shadow-sm);
}
.tldr-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-text);
  margin-bottom: 8px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.tldr-label::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
}
.tldr-text {
  font-size: 16px;
  line-height: 1.55;
  color: var(--text);
}
.tldr-text strong { font-weight: 600; }

/* PROSE — long-form content */
.prose { max-width: 720px; margin: 0 auto; padding: 0 32px; }
.prose h2 { font-size: clamp(28px, 4vw, 40px); margin: 56px 0 16px; }
.prose h3 { font-size: 22px; margin: 40px 0 12px; }
.prose h4 { font-size: 17px; margin: 24px 0 8px; }
.prose p { font-size: 17px; line-height: 1.7; margin-bottom: 18px; color: var(--text-2); }
.prose p strong { color: var(--text); font-weight: 600; }
.prose a { color: var(--text); border-bottom: 1px solid var(--border); transition: border-color 0.15s ease; }
.prose a:hover { border-color: var(--text); }
.prose ul, .prose ol { margin-bottom: 18px; padding-left: 24px; color: var(--text-2); }
.prose li { font-size: 17px; line-height: 1.7; margin-bottom: 6px; }
.prose blockquote {
  border-left: 3px solid var(--accent);
  padding: 8px 0 8px 20px;
  margin: 24px 0;
  font-style: italic;
  color: var(--text);
  font-family: 'Instrument Serif', serif;
  font-size: 22px;
  line-height: 1.4;
}
.prose hr { border: none; border-top: 1px solid var(--border-soft); margin: 40px 0; }
.prose code { background: var(--surface-alt); padding: 2px 6px; border-radius: 4px; font-family: 'IBM Plex Mono', monospace; font-size: 14px; color: var(--text); }
.prose .callout {
  background: var(--surface-alt);
  border-left: 3px solid var(--text);
  padding: 16px 20px;
  margin: 24px 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.prose .callout-title { font-weight: 600; font-size: 14px; color: var(--text); margin-bottom: 4px; font-family: 'IBM Plex Mono', monospace; letter-spacing: 0.02em; text-transform: uppercase; }
.prose .callout-text { font-size: 15px; color: var(--text-2); margin: 0; }

/* COMPARISON TABLE */
.compare-table-wrap {
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  margin: 40px auto;
  max-width: 980px;
}
.compare-table { width: 100%; border-collapse: collapse; }
.compare-table th, .compare-table td { padding: 16px 18px; text-align: left; font-size: 14px; vertical-align: top; }
.compare-table thead th {
  font-weight: 500;
  color: var(--text-3);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-family: 'IBM Plex Mono', monospace;
  background: var(--bg);
  border-bottom: 1px solid var(--border-soft);
}
.compare-table thead th:first-child { width: 32%; }
.compare-table thead th.lantern-col { color: var(--text); font-weight: 600; }
.compare-table tbody tr { border-bottom: 1px solid var(--border-soft); }
.compare-table tbody tr:last-child { border-bottom: none; }
.compare-table tbody td { color: var(--text-2); }
.compare-table tbody td:first-child { color: var(--text); font-weight: 500; }
.compare-table .lantern-col {
  background: linear-gradient(180deg, rgba(220,252,231,0.4), rgba(220,252,231,0.15));
}
.compare-table thead .lantern-col {
  background: linear-gradient(180deg, var(--accent-soft), rgba(220,252,231,0.6));
}
.check, .cross, .partial {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
}
.check { background: var(--accent-soft); color: var(--accent); }
.cross { background: var(--surface-soft); color: var(--text-3); }
.partial { background: var(--warm-soft); color: var(--warm); font-size: 11px; font-weight: 600; }

/* SECTION HEADER (within content) */
.section-header { text-align: center; margin: 0 auto 56px; max-width: 720px; }
.section-header .eyebrow { display: block; margin-bottom: 16px; }
.section-header h2 { font-size: clamp(32px, 4.5vw, 48px); margin-bottom: 16px; }
.section-header p { font-size: 17px; color: var(--text-2); line-height: 1.55; }

/* FAQ SECTION */
.faq-grid { max-width: 780px; margin: 0 auto; display: flex; flex-direction: column; gap: 0; }
.faq-item {
  border-top: 1px solid var(--border-soft);
  padding: 24px 0;
}
.faq-item:last-child { border-bottom: 1px solid var(--border-soft); }
.faq-q {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
  letter-spacing: -0.005em;
}
.faq-a {
  font-size: 15px;
  color: var(--text-2);
  line-height: 1.6;
}
.faq-a a { color: var(--text); border-bottom: 1px solid var(--border); }

/* RELATED PAGES */
.related {
  background: var(--surface-alt);
  padding: 64px 0;
}
.related-grid {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
@media (max-width: 768px) { .related-grid { grid-template-columns: 1fr; } }
.related-card {
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: 24px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.related-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.related-card-eyebrow { font-family: 'IBM Plex Mono', monospace; font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-3); margin-bottom: 8px; }
.related-card-title { font-size: 17px; font-weight: 600; color: var(--text); margin-bottom: 8px; letter-spacing: -0.005em; }
.related-card-desc { font-size: 13px; color: var(--text-2); line-height: 1.5; }
.related-card-arrow { display: inline-flex; align-items: center; gap: 4px; margin-top: 12px; font-size: 13px; color: var(--text); font-weight: 500; }
.related-card-arrow svg { transition: transform 0.15s ease; }
.related-card:hover .related-card-arrow svg { transform: translateX(2px); }

/* MID-PAGE CTA */
.mid-cta {
  max-width: 880px;
  margin: 64px auto;
  background: var(--text);
  color: var(--bg);
  border-radius: var(--radius-lg);
  padding: 40px 48px;
  text-align: center;
}
.mid-cta h3 { font-family: 'Instrument Serif', serif; font-weight: 400; font-size: 32px; line-height: 1.15; margin-bottom: 12px; color: var(--bg); letter-spacing: -0.01em; }
.mid-cta p { font-size: 15px; color: rgba(250,250,247,0.7); margin-bottom: 20px; max-width: 520px; margin-left: auto; margin-right: auto; }
.mid-cta .btn { background: var(--bg); color: var(--text); }
.mid-cta .btn:hover { background: #f0efe8; }

/* FOOTER */
.footer {
  background: #020A0F;
  border-top-left-radius: 16px;
  border-top-right-radius: 16px;
  margin-top: 80px;
  padding: 24px 24px 48px;
}
.footer-cta {
  background: var(--surface-alt);
  border-radius: 14px;
  padding: 72px 32px 80px;
  text-align: center;
  margin-bottom: 72px;
}
.footer-cta-inner { max-width: 720px; margin: 0 auto; }
.footer-cta h2 {
  font-family: 'Instrument Serif', serif;
  font-weight: 400;
  font-size: clamp(40px, 5vw, 64px);
  letter-spacing: -0.02em;
  line-height: 1.05;
  color: var(--text);
  margin-bottom: 16px;
}
.footer-cta p {
  font-size: 17px;
  color: var(--text-2);
  margin-bottom: 28px;
}
.footer-cta .btn-primary { padding: 13px 22px; font-size: 14px; }
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.footer-logo {
  color: #FFFFFF !important;
  font-weight: 700;
  font-size: 19.5px;
  letter-spacing: -0.02em;
}
.footer-logo .logo-mark { color: #FFFFFF; }
.footer-copy {
  color: rgba(255,255,255,0.5);
  font-size: 12px;
  font-family: 'IBM Plex Mono', monospace;
  letter-spacing: 0.02em;
}

/* UTIL */
.center { text-align: center; }
.mb-0 { margin-bottom: 0; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mt-24 { margin-top: 24px; }
.mt-40 { margin-top: 40px; }