/* ==========================================================================
   VOLTA — Influencer Commerce OS
   Brand: editorial serif × technical sans × electric-violet voltage accent
   ========================================================================== */

:root {
  --bg: #FAFAF6;
  --bg-alt: #F4F2EC;
  --ink: #0A1628;
  --ink-soft: #1F2937;
  --slate: #475569;
  --mute: #94A3B8;
  --line: #E5E7EB;
  --card: #FFFFFF;
  --violet: #6D28D9;
  --violet-2: #A855F7;
  --spark: #FBBF24;
  --positive: #059669;
  --grad: linear-gradient(135deg, #6D28D9 0%, #A855F7 100%);
  --grad-ink: linear-gradient(135deg, #0A1628 0%, #1E1B4B 100%);
  --shadow-sm: 0 1px 2px rgba(10,22,40,.04), 0 0 0 1px rgba(10,22,40,.04);
  --shadow-md: 0 8px 24px -8px rgba(10,22,40,.12), 0 0 0 1px rgba(10,22,40,.05);
  --shadow-lg: 0 24px 64px -16px rgba(10,22,40,.18);
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 22px;
  --r-pill: 999px;
  --maxw: 1180px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* Display type */
h1, h2, h3, .display {
  font-family: 'Fraunces', 'Georgia', serif;
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.05;
  color: var(--ink);
}
h1 { font-size: clamp(2.2rem, 5.6vw, 4.6rem); }
h2 { font-size: clamp(1.7rem, 3.6vw, 3rem); }
h3 { font-size: clamp(1.2rem, 2.2vw, 1.6rem); line-height: 1.2; }
p  { color: var(--ink-soft); }
.lead { font-size: clamp(1.05rem, 1.5vw, 1.25rem); color: var(--slate); line-height: 1.55; max-width: 62ch; }

a { color: var(--ink); text-decoration: none; transition: color .15s ease; }
a:hover { color: var(--violet); }

/* Layout */
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
section { padding: 96px 0; position: relative; }
section.tight { padding: 64px 0; }
.eyebrow {
  display: inline-block;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--violet);
  padding: 6px 12px;
  border: 1px solid color-mix(in srgb, var(--violet) 35%, transparent);
  border-radius: var(--r-pill);
  background: color-mix(in srgb, var(--violet) 6%, transparent);
  margin-bottom: 24px;
}

/* Nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid color-mix(in srgb, var(--ink) 6%, transparent);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: 'Fraunces', serif;
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.brand-mark {
  display: inline-block;
  width: 28px;
  height: 28px;
  background: var(--grad);
  border-radius: 8px;
  position: relative;
  flex-shrink: 0;
}
.brand-mark::after {
  content: '';
  position: absolute;
  inset: 6px;
  background:
    linear-gradient(180deg, transparent 38%, var(--bg) 38%, var(--bg) 46%, transparent 46%),
    linear-gradient(180deg, transparent 54%, var(--bg) 54%, var(--bg) 62%, transparent 62%);
  border-radius: 2px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-links a {
  font-size: 14px;
  color: var(--slate);
  font-weight: 500;
}
.nav-links a:hover { color: var(--ink); }
.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}
.lang-toggle {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  padding: 4px;
  background: var(--card);
}
.lang-toggle a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .08em;
  padding: 5px 12px;
  border-radius: var(--r-pill);
  color: var(--slate);
}
.lang-toggle a.active { background: var(--ink); color: var(--bg); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 8px;
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.01em;
  padding: 12px 22px;
  border-radius: var(--r-pill);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease, color .15s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--ink);
  color: var(--bg);
  box-shadow: 0 1px 0 rgba(255,255,255,.08) inset, 0 8px 24px -10px rgba(10,22,40,.5);
}
.btn-primary:hover { transform: translateY(-1px); color: var(--bg); background: #000; }
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}
.btn-ghost:hover { border-color: var(--ink); color: var(--ink); }
.btn-spark {
  background: var(--grad);
  color: white;
}
.btn-spark:hover { color: white; transform: translateY(-1px); box-shadow: 0 12px 32px -10px rgba(109,40,217,.6); }
.btn-lg { padding: 16px 28px; font-size: 15px; }

/* Mobile nav */
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle svg { display: block; width: 24px; height: 24px; stroke: var(--ink); }

/* HERO */
.hero {
  padding: 120px 0 96px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -180px; right: -180px;
  width: 560px; height: 560px;
  background: radial-gradient(circle at center, color-mix(in srgb, var(--violet-2) 28%, transparent) 0%, transparent 65%);
  filter: blur(40px);
  z-index: 0;
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -200px; left: -160px;
  width: 480px; height: 480px;
  background: radial-gradient(circle at center, color-mix(in srgb, var(--spark) 22%, transparent) 0%, transparent 65%);
  filter: blur(50px);
  z-index: 0;
  pointer-events: none;
}
.hero-inner { position: relative; z-index: 1; max-width: 940px; }
.hero h1 { margin-bottom: 24px; }
.hero h1 .accent {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-style: italic;
}
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 24px 40px;
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}
.hero-meta div {
  font-size: 13px;
  color: var(--slate);
}
.hero-meta strong {
  display: block;
  font-family: 'Fraunces', serif;
  font-size: 24px;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: 2px;
  letter-spacing: -0.02em;
}

/* Section heading */
.section-head { max-width: 760px; margin-bottom: 56px; }
.section-head h2 { margin-bottom: 16px; }

/* Three layer cards */
.layer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.layer-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  position: relative;
  overflow: hidden;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.layer-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: color-mix(in srgb, var(--violet) 25%, var(--line)); }
.layer-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; height: 4px;
  background: var(--grad);
  opacity: .9;
}
.layer-card.l2::before { background: linear-gradient(135deg, #0A1628 0%, #6D28D9 100%); }
.layer-card.l3::before { background: linear-gradient(135deg, #FBBF24 0%, #A855F7 100%); }

.layer-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--violet);
  margin-bottom: -6px;
}
.layer-card.l2 .layer-tag { color: var(--ink); }
.layer-card.l3 .layer-tag { color: #B45309; }

.layer-card h3 { font-size: 1.5rem; }
.layer-bullets { list-style: none; padding: 0; margin-top: 8px; display: flex; flex-direction: column; gap: 10px; }
.layer-bullets li {
  font-size: 14px;
  color: var(--slate);
  padding-left: 22px;
  position: relative;
  line-height: 1.5;
}
.layer-bullets li::before {
  content: '';
  position: absolute;
  left: 0; top: 7px;
  width: 12px; height: 2px;
  background: var(--violet);
  border-radius: 2px;
}

/* Stat block */
.stat-band {
  background: var(--grad-ink);
  color: var(--bg);
  border-radius: var(--r-lg);
  padding: 56px 48px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  position: relative;
  overflow: hidden;
}
.stat-band::after {
  content: '';
  position: absolute;
  top: -100px; right: -100px;
  width: 400px; height: 400px;
  background: radial-gradient(circle, color-mix(in srgb, var(--violet-2) 30%, transparent) 0%, transparent 60%);
  pointer-events: none;
}
.stat-band h2, .stat-band h3 { color: var(--bg); }
.stat-band p { color: color-mix(in srgb, var(--bg) 80%, transparent); }
.stat-band-num {
  font-family: 'Fraunces', serif;
  font-size: clamp(3rem, 7vw, 5.5rem);
  font-style: italic;
  background: linear-gradient(135deg, #FBBF24 0%, #A855F7 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1;
  letter-spacing: -0.03em;
}
.stat-band-num + p { margin-top: 12px; font-size: 15px; max-width: 36ch; }

/* Comparison table */
.compare-wrap { background: var(--card); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 8px; overflow-x: auto; box-shadow: var(--shadow-sm); }
.compare-table { width: 100%; min-width: 580px; border-collapse: collapse; }
.compare-table th, .compare-table td {
  padding: 18px 20px;
  text-align: left;
  font-size: 14px;
  border-bottom: 1px solid var(--line);
}
.compare-table th {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--mute);
  font-weight: 600;
}
.compare-table tbody tr:last-child td { border-bottom: none; font-weight: 600; background: color-mix(in srgb, var(--violet) 4%, transparent); }
.compare-table tbody tr:last-child td:last-child { color: var(--positive); }
.compare-table .num { font-family: 'JetBrains Mono', monospace; font-feature-settings: 'tnum'; text-align: right; }
.compare-table .delta { color: var(--positive); font-weight: 600; }

/* Market grid */
.market-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.market-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 28px;
}
.market-card .label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--mute);
  margin-bottom: 12px;
}
.market-card .num {
  font-family: 'Fraunces', serif;
  font-size: clamp(2rem, 3.5vw, 2.6rem);
  letter-spacing: -0.02em;
  color: var(--ink);
  font-weight: 500;
}
.market-card .num small { font-size: 1rem; color: var(--slate); font-weight: 400; }
.market-card .desc { font-size: 13px; color: var(--slate); margin-top: 8px; }

/* Roadmap */
.roadmap {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  position: relative;
}
.phase {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 24px;
}
.phase-tag {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--violet);
  background: color-mix(in srgb, var(--violet) 8%, transparent);
  padding: 4px 8px;
  border-radius: 6px;
  margin-bottom: 12px;
}
.phase h4 { font-family: 'Fraunces', serif; font-size: 1.15rem; font-weight: 500; letter-spacing: -0.01em; margin-bottom: 8px; line-height: 1.2; }
.phase p { font-size: 13px; color: var(--slate); }

/* Team */
.team-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.person {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 36px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.person .role {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--violet);
}
.person h3 { font-size: 1.5rem; }
.person p { font-size: 14px; color: var(--slate); }

/* CTA band */
.cta-band {
  background: var(--ink);
  color: var(--bg);
  border-radius: var(--r-lg);
  padding: 72px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-band::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 30%, color-mix(in srgb, var(--violet-2) 22%, transparent) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, color-mix(in srgb, var(--spark) 14%, transparent) 0%, transparent 50%);
  pointer-events: none;
}
.cta-band > * { position: relative; z-index: 1; }
.cta-band h2 { color: var(--bg); margin-bottom: 16px; }
.cta-band p { color: color-mix(in srgb, var(--bg) 75%, transparent); max-width: 56ch; margin: 0 auto 32px; font-size: 1.05rem; }
.cta-band .btn-primary { background: var(--bg); color: var(--ink); }
.cta-band .btn-primary:hover { background: white; color: var(--ink); }
.cta-band .btn-ghost { color: var(--bg); border-color: color-mix(in srgb, var(--bg) 30%, transparent); }
.cta-band .btn-ghost:hover { color: var(--bg); border-color: var(--bg); }

/* Footer */
footer {
  border-top: 1px solid var(--line);
  padding: 48px 0 64px;
  margin-top: 32px;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 24px;
  font-size: 13px;
  color: var(--slate);
}
.footer-inner .brand { font-size: 18px; }
.footer-inner small { color: var(--mute); display: block; margin-top: 4px; }
.footer-links { display: flex; gap: 24px; flex-wrap: wrap; }
.footer-links a { color: var(--slate); font-size: 13px; }

/* Voltage divider */
.divider {
  display: block;
  margin: 0 auto;
  height: 24px;
  width: 80px;
  opacity: .6;
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 960px) {
  .layer-grid { grid-template-columns: 1fr; }
  .stat-band { grid-template-columns: 1fr; padding: 40px 28px; }
  .market-grid { grid-template-columns: 1fr; }
  .roadmap { grid-template-columns: repeat(2, 1fr); }
  .team-grid { grid-template-columns: 1fr; }
  section { padding: 72px 0; }
  .hero { padding: 80px 0 64px; }
}
@media (max-width: 720px) {
  .nav-links { display: none; }
  .nav-toggle { display: inline-flex; }
  .nav-cta .btn { display: none; }
  .hero-meta { gap: 20px 28px; }
  .hero-meta strong { font-size: 20px; }
  .cta-band { padding: 48px 24px; }
  footer .footer-inner { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 480px) {
  body { font-size: 15px; }
  section { padding: 56px 0; }
  .hero { padding: 56px 0 40px; }
  .hero-cta .btn { width: 100%; }
  .roadmap { grid-template-columns: 1fr; }
  .layer-card { padding: 28px 24px; }
  .person { padding: 28px 24px; }
  .stat-band { padding: 32px 22px; }
  .container { padding: 0 18px; }
  .nav-inner { padding: 0 18px; }
}
@media (max-width: 320px) {
  body { font-size: 14px; }
  .container { padding: 0 14px; }
  .nav-inner { padding: 0 14px; }
  .brand { font-size: 18px; }
  .brand-mark { width: 24px; height: 24px; }
  .compare-table th, .compare-table td { padding: 12px 14px; font-size: 13px; }
}

/* Mobile drawer */
.mobile-drawer {
  position: fixed;
  inset: 64px 0 0 0;
  background: var(--bg);
  z-index: 49;
  padding: 32px 24px;
  display: none;
  flex-direction: column;
  gap: 8px;
  border-top: 1px solid var(--line);
}
.mobile-drawer.open { display: flex; }
.mobile-drawer a {
  font-family: 'Fraunces', serif;
  font-size: 1.5rem;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
}
.mobile-drawer .btn { margin-top: 24px; }

/* Print friendly */
@media print {
  .nav, .cta-band .btn-ghost, footer, .nav-toggle, .lang-toggle { display: none; }
  body { background: white; color: black; }
  section { padding: 24px 0; page-break-inside: avoid; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}