/* ========================================================================
   Zero-Blockchain · Unified theme overlay  v2 (Aceternity-grade)
   ------------------------------------------------------------------------
   Loaded after each page's own <style> via injected <link> tag.
   Palette + interactions mirror https://www.zero-blockchain.xyz/
   plus Aceternity / shadcn / uiverse / 21st.dev component tropes:
     · animated mesh grid + aurora orbs + grain
     · conic-gradient rotating card borders
     · mouse-tracked spotlight panels
     · gradient-shimmer text + sweep buttons
     · scroll progress bar + reveal-on-scroll
     · glass nav with animated underline
     · monospaced code block with traffic-light bar
   ======================================================================== */

/* ===== Tokens ============================================================ */
:root {
  --zb-bg-0: #04050a;
  --zb-bg-1: #0a0d14;
  --zb-bg-2: #0e1220;
  --zb-cyan: #22d3ee;
  --zb-cyan-bright: #67e8f9;
  --zb-cyan-deep: #06b6d4;
  --zb-purple: #a855f7;
  --zb-purple-deep: #7c3aed;
  --zb-pink: #ec4899;
  --zb-blue: #3b82f6;
  --zb-emerald: #10b981;
  --zb-amber: #f59e0b;
  --zb-red: #ef4444;
  --zb-text: #e6f1ff;
  --zb-text-dim: #94a3b8;
  --zb-text-faint: #475569;
  --zb-border: rgba(255, 255, 255, 0.1);
  --zb-border-strong: rgba(255, 255, 255, 0.18);
  --zb-surface: rgba(255, 255, 255, 0.03);
  --zb-surface-2: rgba(255, 255, 255, 0.06);

  /* Legacy variable bridge */
  --primary-color: var(--zb-cyan);
  --secondary-color: var(--zb-purple);
  --accent-color: var(--zb-pink);
  --tech-highlight: var(--zb-cyan);
  --text-primary: var(--zb-text);
  --text-secondary: var(--zb-text-dim);
  --dark-bg: var(--zb-bg-0);
  --card-bg: rgba(10, 13, 20, 0.72);
  --gradient-primary: linear-gradient(
    135deg,
    var(--zb-cyan) 0%,
    var(--zb-purple) 50%,
    var(--zb-pink) 100%
  );
  --gradient-secondary: linear-gradient(135deg, rgba(34, 211, 238, 0.12), rgba(168, 85, 247, 0.12));
  --gradient-gold: linear-gradient(135deg, var(--zb-amber), #fbbf24);
  --silver-outline: 1px solid var(--zb-border);
  --glow-primary: 0 0 28px rgba(34, 211, 238, 0.45), 0 0 60px rgba(34, 211, 238, 0.18);
  --glow-secondary: 0 0 22px rgba(168, 85, 247, 0.5), 0 0 60px rgba(168, 85, 247, 0.18);
  --glow-pink: 0 0 22px rgba(236, 72, 153, 0.5);

  --zb-radius-sm: 8px;
  --zb-radius: 14px;
  --zb-radius-lg: 22px;

  --zb-easing: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ===== Reset-ish ========================================================= */
html {
  scroll-behavior: smooth;
}
html,
body {
  background: var(--zb-bg-0) !important;
  color: var(--zb-text) !important;
  font-family: 'Inter', 'Segoe UI', Tahoma, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
body {
  position: relative;
  min-height: 100vh;
  overflow-x: hidden;
}
body > * {
  position: relative;
  z-index: 1;
}

/* ===== Background system ================================================= */

/* Layer 1 · animated mesh grid (slow drift) */
body::before {
  content: '';
  position: fixed;
  inset: -2px;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, black 25%, transparent 75%);
  mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, black 25%, transparent 75%);
  animation: zb-grid-drift 38s linear infinite;
  pointer-events: none;
  z-index: 0;
}
@keyframes zb-grid-drift {
  to {
    background-position:
      56px 56px,
      56px 56px;
  }
}

/* Layer 2 · aurora / radial spotlights */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(60% 40% at 12% 8%, rgba(34, 211, 238, 0.22), transparent 60%),
    radial-gradient(55% 40% at 88% 4%, rgba(168, 85, 247, 0.22), transparent 60%),
    radial-gradient(70% 50% at 50% 105%, rgba(59, 130, 246, 0.16), transparent 60%),
    radial-gradient(35% 30% at 70% 50%, rgba(236, 72, 153, 0.1), transparent 70%);
  pointer-events: none;
  z-index: 0;
  filter: saturate(120%);
}

/* Layer 3 · drifting orbs (added via .zb-orbs container injected by JS) */
.zb-orbs {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}
.zb-orbs span {
  position: absolute;
  width: 480px;
  height: 480px;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.55;
  mix-blend-mode: screen;
  animation: zb-orb-float 22s ease-in-out infinite;
}
.zb-orbs span:nth-child(1) {
  background: radial-gradient(circle, var(--zb-cyan) 0%, transparent 70%);
  top: -120px;
  left: -120px;
  animation-delay: 0s;
}
.zb-orbs span:nth-child(2) {
  background: radial-gradient(circle, var(--zb-purple) 0%, transparent 70%);
  top: 30%;
  right: -160px;
  animation-delay: -8s;
}
.zb-orbs span:nth-child(3) {
  background: radial-gradient(circle, var(--zb-pink) 0%, transparent 70%);
  bottom: -180px;
  left: 30%;
  animation-delay: -14s;
}
@keyframes zb-orb-float {
  0%,
  100% {
    transform: translate(0, 0) scale(1);
  }
  33% {
    transform: translate(60px, -40px) scale(1.08);
  }
  66% {
    transform: translate(-50px, 40px) scale(0.94);
  }
}

/* Layer 4 · subtle film grain */
body > .zb-grain,
.zb-grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.05;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)' opacity='0.55'/></svg>");
}

/* Top scroll progress bar */
.zb-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0%;
  background: linear-gradient(90deg, var(--zb-cyan), var(--zb-purple), var(--zb-pink));
  z-index: 9999;
  box-shadow: 0 0 12px rgba(34, 211, 238, 0.7);
  transition: width 0.08s linear;
}

/* ===== Typography ======================================================== */
h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--zb-text);
  letter-spacing: -0.02em;
  font-weight: 700;
}
h1 {
  font-family: 'Inter', 'Segoe UI', sans-serif;
  font-weight: 800;
  letter-spacing: -0.025em;
  font-size: clamp(2rem, 4.5vw, 3.5rem);
  line-height: 1.1;
}
h2 {
  font-family: 'Inter', 'Segoe UI', sans-serif;
  font-weight: 700;
  letter-spacing: -0.02em;
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  line-height: 1.2;
}
h3 {
  font-weight: 700;
  letter-spacing: -0.01em;
}

/* Hero / page titles · clean two-tone gradient, no shimmer */
.gradient-text,
.hero h1,
.hero-title,
.page-title,
h1.gradient-text,
h2.gradient-text {
  background: linear-gradient(180deg, #ffffff 0%, #c9d4ea 60%, var(--zb-cyan-bright) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  text-shadow: none;
  filter: none;
  animation: none;
}

/* Optional opt-in shimmer for marketing-only headings */
.zb-shimmer {
  background: linear-gradient(
    90deg,
    var(--zb-cyan-bright) 0%,
    var(--zb-cyan) 25%,
    var(--zb-purple) 55%,
    var(--zb-pink) 80%,
    var(--zb-cyan-bright) 100%
  );
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  animation: zb-text-shimmer 10s linear infinite;
}
@keyframes zb-text-shimmer {
  to {
    background-position: 200% 0;
  }
}

p {
  color: var(--zb-text-dim);
  line-height: 1.75;
}
strong,
b {
  color: var(--zb-text);
}

/* Custom bulleted lists */
ul:not(.nav-menu):not([class*='nav']) {
  list-style: none;
  padding-left: 0;
}
ul:not(.nav-menu):not([class*='nav']) > li {
  position: relative;
  padding-left: 1.6rem;
  margin: 0.5rem 0;
  color: var(--zb-text-dim);
}
ul:not(.nav-menu):not([class*='nav']) > li::before {
  content: '';
  position: absolute;
  left: 0.2rem;
  top: 0.65rem;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--zb-cyan);
  box-shadow:
    0 0 8px var(--zb-cyan),
    0 0 16px rgba(34, 211, 238, 0.4);
}

/* Blockquote */
blockquote {
  margin: 1.5rem 0;
  padding: 1rem 1.25rem;
  border-left: 3px solid transparent;
  border-image: linear-gradient(180deg, var(--zb-cyan), var(--zb-purple)) 1;
  background: linear-gradient(90deg, rgba(34, 211, 238, 0.06), transparent);
  color: var(--zb-text);
  font-style: italic;
}

/* ===== Navigation ======================================================== */
.main-nav,
nav.main-nav,
header > nav {
  background: rgba(5, 6, 10, 0.65) !important;
  border-bottom: 1px solid var(--zb-border) !important;
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.04),
    0 20px 50px -30px rgba(0, 0, 0, 0.7);
}
.nav-brand,
.main-nav .nav-brand,
.nav-logo .nav-brand {
  background: linear-gradient(
    90deg,
    var(--zb-cyan-bright),
    var(--zb-cyan),
    var(--zb-purple)
  ) !important;
  -webkit-background-clip: text !important;
  background-clip: text !important;
  -webkit-text-fill-color: transparent !important;
  color: transparent !important;
  letter-spacing: 0.05em;
  font-family: 'Orbitron', 'Inter', sans-serif;
  font-weight: 800;
  text-shadow: none;
}
.nav-link,
.main-nav a,
nav a {
  position: relative;
  color: var(--zb-text-dim) !important;
  transition: color 0.3s var(--zb-easing);
  text-decoration: none;
  font-weight: 500;
}
.nav-link::after,
.main-nav a::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -6px;
  height: 2px;
  background: linear-gradient(90deg, var(--zb-cyan), var(--zb-purple));
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--zb-easing);
}
.nav-link:hover,
.main-nav a:hover,
nav a:hover {
  color: var(--zb-text) !important;
}
.nav-link:hover::after,
.main-nav a:hover::after {
  transform: scaleX(1);
}
.nav-link.active::after {
  transform: scaleX(1);
}

/* ===== Cards · conic-gradient rotating border + spotlight =============== */
.card,
.feature-card,
.tech-card,
.info-card,
.team-member,
.stat-item,
.doc-section,
.content-section,
.highlight-section,
.panel,
section.card,
.glass {
  position: relative;
  background: linear-gradient(180deg, rgba(14, 18, 32, 0.78), rgba(8, 11, 20, 0.85)) !important;
  border: 1px solid var(--zb-border) !important;
  border-radius: var(--zb-radius-lg) !important;
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  transition:
    transform 0.4s var(--zb-easing),
    border-color 0.4s var(--zb-easing),
    box-shadow 0.4s var(--zb-easing);
  isolation: isolate;
  overflow: hidden;
}

/* Mouse-tracked spotlight via CSS vars set by JS */
.card::before,
.feature-card::before,
.tech-card::before,
.info-card::before,
.team-member::before,
.stat-item::before,
.doc-section::before,
.content-section::before,
.highlight-section::before,
.panel::before,
.glass::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(
    520px circle at var(--mx, 50%) var(--my, 0%),
    rgba(34, 211, 238, 0.18),
    transparent 40%
  );
  opacity: 0;
  transition: opacity 0.4s var(--zb-easing);
  pointer-events: none;
  z-index: 0;
}

/* Inner gradient hairline */
.card::after,
.feature-card::after,
.tech-card::after,
.info-card::after,
.team-member::after,
.stat-item::after,
.doc-section::after,
.panel::after,
.glass::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(
    135deg,
    rgba(34, 211, 238, 0.35),
    rgba(168, 85, 247, 0) 35%,
    rgba(236, 72, 153, 0.25) 100%
  );
  -webkit-mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.4s var(--zb-easing);
  pointer-events: none;
  z-index: 0;
}

.card:hover,
.feature-card:hover,
.tech-card:hover,
.info-card:hover,
.team-member:hover,
.stat-item:hover,
.doc-section:hover,
.panel:hover,
.glass:hover {
  border-color: rgba(34, 211, 238, 0.4) !important;
  box-shadow:
    0 24px 60px -20px rgba(34, 211, 238, 0.35),
    0 8px 30px -10px rgba(168, 85, 247, 0.25),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
  transform: translateY(-4px);
}
.card:hover::before,
.feature-card:hover::before,
.tech-card:hover::before,
.info-card:hover::before,
.team-member:hover::before,
.stat-item:hover::before,
.doc-section:hover::before,
.panel:hover::before,
.glass:hover::before {
  opacity: 1;
}
.card:hover::after,
.feature-card:hover::after,
.tech-card:hover::after,
.info-card:hover::after,
.team-member:hover::after,
.stat-item:hover::after,
.doc-section:hover::after,
.panel:hover::after,
.glass:hover::after {
  opacity: 1;
}

/* Card content above pseudo elements */
.card > *,
.feature-card > *,
.tech-card > *,
.info-card > *,
.team-member > *,
.stat-item > *,
.doc-section > *,
.panel > *,
.glass > * {
  position: relative;
  z-index: 1;
}

/* "Aurora" featured card variant — rotating conic border */
.zb-aurora,
.team-card,
.feature-highlight {
  position: relative;
  border-radius: var(--zb-radius-lg);
  background: linear-gradient(180deg, rgba(14, 18, 32, 0.85), rgba(8, 11, 20, 0.92));
  isolation: isolate;
}
.zb-aurora::before,
.team-card::before,
.feature-highlight::before {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: inherit;
  background: conic-gradient(
    from 0deg,
    var(--zb-cyan),
    var(--zb-purple),
    var(--zb-pink),
    var(--zb-cyan)
  );
  filter: blur(14px);
  opacity: 0.7;
  z-index: -1;
  animation: zb-spin 9s linear infinite;
}
@keyframes zb-spin {
  to {
    transform: rotate(360deg);
  }
}

/* ===== Buttons ========================================================== */
.btn,
.cta-button,
.button,
button.primary,
.nav-cta,
a.btn,
button.btn,
input[type='submit'],
input[type='button'] {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  background: linear-gradient(
    135deg,
    rgba(34, 211, 238, 0.14),
    rgba(168, 85, 247, 0.14)
  ) !important;
  border: 1px solid rgba(34, 211, 238, 0.4) !important;
  color: var(--zb-text) !important;
  border-radius: 12px !important;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-decoration: none;
  cursor: pointer;
  overflow: hidden;
  isolation: isolate;
  transition:
    transform 0.3s var(--zb-easing),
    box-shadow 0.3s var(--zb-easing),
    border-color 0.3s var(--zb-easing);
}
/* Sweep highlight */
.btn::before,
.cta-button::before,
.button::before,
.nav-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    120deg,
    transparent 30%,
    rgba(255, 255, 255, 0.18) 50%,
    transparent 70%
  );
  transform: translateX(-120%);
  transition: transform 0.7s var(--zb-easing);
  pointer-events: none;
  z-index: -1;
}
.btn:hover,
.cta-button:hover,
.button:hover,
.nav-cta:hover {
  transform: translateY(-2px);
  border-color: var(--zb-cyan-bright) !important;
  box-shadow:
    0 18px 36px -12px rgba(168, 85, 247, 0.55),
    0 8px 18px -6px rgba(34, 211, 238, 0.45);
}
.btn:hover::before,
.cta-button:hover::before,
.button:hover::before,
.nav-cta:hover::before {
  transform: translateX(120%);
}
.btn-primary,
.btn.primary,
.cta-button.primary {
  background: linear-gradient(135deg, var(--zb-cyan), var(--zb-purple), var(--zb-pink)) !important;
  background-size: 200% 100% !important;
  color: #04060a !important;
  border: none !important;
  font-weight: 700;
  animation: zb-text-shimmer 6s linear infinite;
}
.btn-secondary,
.btn.secondary {
  background: transparent !important;
  border: 1px solid var(--zb-border-strong) !important;
  color: var(--zb-text) !important;
}

/* ===== Pills / tags / badges ============================================ */
.skill-tag,
.tag,
.badge,
.pill,
.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.85rem !important;
  background: rgba(34, 211, 238, 0.08) !important;
  color: var(--zb-cyan) !important;
  border: 1px solid rgba(34, 211, 238, 0.3) !important;
  border-radius: 999px !important;
  font-family: 'JetBrains Mono', ui-monospace, monospace !important;
  font-size: 12px !important;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.tag.purple,
.badge.purple {
  background: rgba(168, 85, 247, 0.08) !important;
  color: var(--zb-purple) !important;
  border-color: rgba(168, 85, 247, 0.3) !important;
}
.tag.pink,
.badge.pink {
  background: rgba(236, 72, 153, 0.08) !important;
  color: var(--zb-pink) !important;
  border-color: rgba(236, 72, 153, 0.3) !important;
}

.highlight-item {
  background: rgba(168, 85, 247, 0.08) !important;
  border-left: 3px solid var(--zb-purple) !important;
  border-radius: 8px !important;
  color: var(--zb-text) !important;
  padding: 0.75rem 1rem;
}

/* ===== Stats / metrics =================================================== */
.stat-value,
.metric-value,
.number {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-weight: 700;
  background: linear-gradient(135deg, var(--zb-cyan-bright), var(--zb-purple));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* ===== Code blocks ====================================================== */
code,
pre,
.mono {
  font-family: 'JetBrains Mono', ui-monospace, 'Cascadia Code', monospace !important;
}
:not(pre) > code {
  padding: 0.15em 0.45em;
  background: rgba(34, 211, 238, 0.1);
  color: var(--zb-cyan-bright);
  border: 1px solid rgba(34, 211, 238, 0.25);
  border-radius: 6px;
  font-size: 0.9em;
}
pre {
  position: relative;
  background: linear-gradient(180deg, rgba(8, 11, 20, 0.95), rgba(4, 6, 12, 0.98)) !important;
  color: var(--zb-text) !important;
  border: 1px solid var(--zb-border) !important;
  border-radius: var(--zb-radius) !important;
  padding: 2.5rem 1.25rem 1.25rem !important;
  overflow-x: auto;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}
pre::before {
  content: '● ● ●';
  position: absolute;
  top: 0.6rem;
  left: 1rem;
  letter-spacing: 0.4rem;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.18);
}
pre::after {
  content: attr(data-lang);
  position: absolute;
  top: 0.5rem;
  right: 1rem;
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--zb-text-faint);
}
pre code {
  background: transparent;
  border: 0;
  padding: 0;
  color: var(--zb-text);
}

/* ===== Tables =========================================================== */
table {
  width: 100%;
  border-collapse: collapse;
  background: rgba(10, 13, 20, 0.5);
  border: 1px solid var(--zb-border);
  border-radius: var(--zb-radius);
  overflow: hidden;
}
thead th {
  background: linear-gradient(180deg, rgba(34, 211, 238, 0.12), rgba(168, 85, 247, 0.1));
  color: var(--zb-text);
  text-align: left;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 0.78rem;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--zb-border);
}
tbody td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--zb-border);
  color: var(--zb-text-dim);
}
tbody tr:hover td {
  background: rgba(34, 211, 238, 0.05);
  color: var(--zb-text);
}
tbody tr:last-child td {
  border-bottom: 0;
}

/* ===== Links ============================================================ */
a {
  color: var(--zb-cyan);
  transition:
    color 0.25s,
    text-shadow 0.25s;
}
a:hover {
  color: var(--zb-cyan-bright);
  text-shadow: 0 0 14px rgba(34, 211, 238, 0.45);
}

/* ===== Forms / inputs =================================================== */
input,
textarea,
select {
  background: rgba(10, 13, 20, 0.6) !important;
  border: 1px solid var(--zb-border) !important;
  border-radius: 10px !important;
  color: var(--zb-text) !important;
  padding: 0.65rem 0.85rem;
  transition:
    border-color 0.3s,
    box-shadow 0.3s;
}
input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--zb-cyan) !important;
  box-shadow:
    0 0 0 3px rgba(34, 211, 238, 0.18),
    0 0 24px rgba(34, 211, 238, 0.25);
}

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

/* ===== Hero specifics =================================================== */
.hero,
.page-hero,
header.hero {
  position: relative;
  padding: 6rem 1.5rem 4rem !important;
  text-align: center;
  overflow: hidden;
}
.hero::after {
  content: '';
  position: absolute;
  inset: auto 0 0 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 10%, rgba(34, 211, 238, 0.5) 50%, transparent 90%);
}

/* ===== Footer =========================================================== */
.main-footer,
footer {
  position: relative;
  background: linear-gradient(180deg, rgba(5, 6, 10, 0.5), rgba(5, 6, 10, 0.95)) !important;
  border-top: 1px solid var(--zb-border) !important;
  color: var(--zb-text-dim) !important;
  padding-top: 3rem !important;
}
.main-footer::before,
footer::before {
  content: '';
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--zb-cyan),
    var(--zb-purple),
    var(--zb-pink),
    transparent
  );
  opacity: 0.6;
}
.main-footer h3,
footer h3,
.footer-section h3 {
  background: linear-gradient(90deg, var(--zb-cyan), var(--zb-purple)) !important;
  -webkit-background-clip: text !important;
  background-clip: text !important;
  -webkit-text-fill-color: transparent !important;
  color: transparent !important;
}

/* ===== Scrollbar ======================================================== */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
::-webkit-scrollbar-track {
  background: var(--zb-bg-0);
}
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, rgba(34, 211, 238, 0.4), rgba(168, 85, 247, 0.4));
  border-radius: 6px;
}
::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, var(--zb-cyan), var(--zb-purple));
}
* {
  scrollbar-color: rgba(168, 85, 247, 0.4) transparent;
}

::selection {
  background: rgba(168, 85, 247, 0.45);
  color: #fff;
}

/* ===== Reveal-on-scroll ================================================= */
.zb-reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.9s var(--zb-easing),
    transform 0.9s var(--zb-easing);
  will-change: opacity, transform;
}
.zb-reveal.zb-in {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Team page specifics ============================================== */
.member-avatar,
.team-avatar,
.avatar {
  position: relative;
  background: linear-gradient(135deg, var(--zb-cyan), var(--zb-purple), var(--zb-pink)) !important;
  background-size: 200% 100% !important;
  color: #04060a !important;
  font-family: 'Orbitron', 'Inter', sans-serif;
  font-weight: 800;
  letter-spacing: 0.05em;
  box-shadow:
    0 0 0 4px rgba(34, 211, 238, 0.15),
    0 18px 50px -10px rgba(168, 85, 247, 0.55),
    inset 0 0 30px rgba(255, 255, 255, 0.1);
  animation: zb-text-shimmer 6s linear infinite;
}

/* Image media in cards get a soft glow border */
.card img,
.feature-card img,
.team-member img,
.info-card img {
  border-radius: var(--zb-radius);
  border: 1px solid var(--zb-border);
  box-shadow: 0 12px 40px -12px rgba(0, 0, 0, 0.6);
}

/* ===== Marquee ticker (opt-in: .zb-marquee) ============================= */
.zb-marquee {
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}
.zb-marquee > * {
  display: inline-flex;
  gap: 2rem;
  animation: zb-marquee 28s linear infinite;
  white-space: nowrap;
}
@keyframes zb-marquee {
  to {
    transform: translateX(-50%);
  }
}

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

/* ===== Mobile tweaks ==================================================== */
@media (max-width: 768px) {
  .zb-orbs span {
    width: 320px;
    height: 320px;
    filter: blur(70px);
  }
  body::before {
    background-size: 40px 40px;
  }
}

/* ===== v3 polish · scroll nav, copy btn, back-to-top, separators ======== */

/* Scroll-shrink nav */
.main-nav, header > nav, nav.main-nav {
  transition: padding 0.35s var(--zb-easing), background-color 0.35s var(--zb-easing);
}
.zb-nav-scrolled {
  background: rgba(5, 6, 10, 0.85) !important;
  box-shadow: 0 8px 30px -10px rgba(0, 0, 0, 0.6), 0 1px 0 rgba(255,255,255,0.05);
  padding-top: 0.4rem !important;
  padding-bottom: 0.4rem !important;
}

/* Copy button on <pre> */
.zb-copy {
  position: absolute;
  top: 0.45rem;
  right: 0.55rem;
  padding: 0.18rem 0.55rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--zb-text-dim);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--zb-border);
  border-radius: 6px;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.25s, color 0.25s, border-color 0.25s, transform 0.25s;
}
pre:hover .zb-copy { opacity: 1; }
.zb-copy:hover {
  color: var(--zb-cyan);
  border-color: rgba(34, 211, 238, 0.45);
  transform: translateY(-1px);
}

/* Back-to-top button */
.zb-top {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 999px;
  border: 1px solid rgba(34, 211, 238, 0.4);
  background:
    linear-gradient(180deg, rgba(14, 18, 32, 0.85), rgba(8, 11, 20, 0.92));
  color: var(--zb-cyan);
  cursor: pointer;
  opacity: 0;
  transform: translateY(12px) scale(0.9);
  transition: opacity 0.35s var(--zb-easing), transform 0.35s var(--zb-easing), box-shadow 0.35s;
  z-index: 9998;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.zb-top.zb-top-show {
  opacity: 1;
  transform: translateY(0) scale(1);
  box-shadow: 0 14px 40px -12px rgba(34, 211, 238, 0.5), 0 0 0 4px rgba(34, 211, 238, 0.08);
}
.zb-top:hover {
  color: #04060a;
  background: linear-gradient(135deg, var(--zb-cyan), var(--zb-purple));
  border-color: transparent;
}

/* Decorative section divider · gradient ribbon with glyph */
.zb-divider {
  position: relative;
  margin: 4rem auto;
  height: 2px;
  width: min(80%, 720px);
  background: linear-gradient(90deg, transparent, var(--zb-cyan), var(--zb-purple), var(--zb-pink), transparent);
  border: 0;
  opacity: 0.7;
}
.zb-divider::after {
  content: "◆";
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  font-size: 0.7rem;
  color: var(--zb-cyan);
  background: var(--zb-bg-0);
  padding: 0 0.6rem;
  letter-spacing: 0.5rem;
  text-shadow: 0 0 8px var(--zb-cyan);
}

/* Better card transition (used by tilt) */
.card, .feature-card, .tech-card, .info-card,
.team-member, .stat-item, .doc-section,
.content-section, .highlight-section, .panel, .glass {
  transform-style: preserve-3d;
  will-change: transform;
}

/* Heading "kicker" eyebrow text */
.eyebrow,
.section-eyebrow,
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.3rem 0.8rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--zb-cyan);
  background: rgba(34, 211, 238, 0.06);
  border: 1px solid rgba(34, 211, 238, 0.25);
  border-radius: 999px;
  margin-bottom: 1rem;
}
.eyebrow::before {
  content: "";
  display: inline-block;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--zb-cyan);
  box-shadow: 0 0 10px var(--zb-cyan);
}

/* Floating dot field (very subtle) */
@keyframes zb-twinkle {
  0%, 100% { opacity: 0.15; }
  50%      { opacity: 0.4;  }
}
body > .zb-grain { animation: zb-twinkle 12s ease-in-out infinite; }

/* Selection text padding */
::selection { padding: 0 0.2em; }

/* Better paragraph spacing inside cards */
.card p + p, .feature-card p + p, .info-card p + p, .panel p + p { margin-top: 0.85rem; }

/* Strong/em color refinement */
em { color: var(--zb-cyan-bright); font-style: italic; }


/* ===== v4 polish - rotator, DAG canvas, comparison table ================ */

/* Reduced motion - respect user preference */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .zb-orbs, .zb-grain { display: none !important; }
}

/* Word rotator */
.zb-rotator {
  display: inline-block;
  min-height: 1.4em;
  background: linear-gradient(135deg, var(--zb-cyan-bright), var(--zb-purple));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-weight: 700;
  position: relative;
}
.zb-rotator::after {
  content: '';
  display: inline-block;
  width: 2px;
  height: 1em;
  margin-left: 0.15em;
  vertical-align: -0.15em;
  background: var(--zb-cyan);
  animation: zb-cursor-blink 1s steps(2) infinite;
}
@keyframes zb-cursor-blink { 50% { opacity: 0; } }

/* Generic section container */
.zb-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 4rem 1.5rem;
  text-align: center;
}
.zb-container h2 { margin: 0 0 0.6rem; }
.zb-section-sub {
  color: var(--zb-text-dim);
  max-width: 720px;
  margin: 0 auto 2.5rem;
  line-height: 1.6;
}

/* DAG canvas */
.zb-dag-section { position: relative; }
.zb-dag-wrap {
  position: relative;
  border: 1px solid var(--zb-border);
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(10, 14, 28, 0.7), rgba(4, 6, 14, 0.85));
  padding: 1rem;
  overflow: hidden;
  box-shadow: 0 30px 80px -30px rgba(34, 211, 238, 0.25),
              inset 0 1px 0 rgba(255, 255, 255, 0.05);
}
#zb-dag-canvas {
  display: block;
  width: 100%;
  height: auto;
  max-height: 420px;
  border-radius: 12px;
  background:
    radial-gradient(circle at 20% 20%, rgba(34, 211, 238, 0.08), transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(168, 85, 247, 0.08), transparent 50%),
    rgba(2, 4, 10, 0.6);
}
.zb-dag-legend {
  display: flex;
  justify-content: center;
  gap: 1.6rem;
  margin-top: 1rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--zb-text-dim);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.zb-dag-legend i {
  display: inline-block;
  width: 10px; height: 10px;
  border-radius: 50%;
  margin-right: 0.4rem;
  vertical-align: -1px;
  box-shadow: 0 0 8px currentColor;
}

/* Comparison table */
.zb-table-wrap {
  overflow-x: auto;
  border-radius: 14px;
  border: 1px solid var(--zb-border);
  background: rgba(10, 14, 28, 0.5);
  box-shadow: 0 20px 60px -20px rgba(0, 0, 0, 0.6);
}
.zb-compare {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
  text-align: left;
}
.zb-compare th,
.zb-compare td {
  padding: 0.95rem 1.1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.zb-compare thead th {
  background: rgba(255, 255, 255, 0.03);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--zb-text-dim);
  font-weight: 500;
}
.zb-compare th.zb-self,
.zb-compare td.zb-self {
  background: linear-gradient(180deg, rgba(34, 211, 238, 0.10), rgba(168, 85, 247, 0.06));
  color: var(--zb-cyan-bright);
  font-weight: 600;
  position: relative;
}
.zb-compare th.zb-self {
  color: var(--zb-cyan);
  text-shadow: 0 0 12px rgba(34, 211, 238, 0.5);
}
.zb-compare tbody tr:hover {
  background: rgba(255, 255, 255, 0.02);
}
.zb-compare tbody tr:last-child td { border-bottom: 0; }
.zb-compare td:first-child {
  color: #fff;
  font-weight: 500;
}

@media (max-width: 720px) {
  .zb-compare th, .zb-compare td { padding: 0.7rem 0.6rem; font-size: 0.82rem; }
  .zb-container { padding: 2.5rem 1rem; }
}