/* Synapticore brand theme — monochromatic metallic, logo-aligned
   Loaded after each page's inline styles to unify the visual system. */

:root {
  --void-black: #0a0a0a;
  --void-black-edge: #000000;
  --charcoal: #141414;
  --charcoal-light: #1e1e1e;

  --signal-white: #ffffff;
  --phantom-grey: #a0a0a0;
  --metallic-silver: #c8c8c8;
  --metallic-highlight: #e8e8e8;
  --metallic-mid: #909090;
  --metallic-shadow: #5a5a5a;

  /* Legacy aliases — keep existing var() references working */
  --synapse-cyan: var(--metallic-silver);
  --accent-color: var(--metallic-silver);
  --secondary-accent: var(--metallic-highlight);

  --glass-surface: rgba(255, 255, 255, 0.028);
  --glass-surface-strong: rgba(255, 255, 255, 0.055);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-metallic: rgba(200, 200, 200, 0.14);

  --text-color: rgba(255, 255, 255, 0.94);
  --text-secondary: rgba(160, 160, 160, 0.95);
  --text-muted: rgba(160, 160, 160, 0.62);

  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 6px;

  --shadow-elev: 0 20px 60px rgba(0, 0, 0, 0.65);
  --shadow-soft: 0 12px 36px rgba(0, 0, 0, 0.5);
  --glow-metallic: 0 0 24px rgba(200, 200, 200, 0.12);
  --glow-metallic-strong: 0 0 32px rgba(232, 232, 232, 0.18);

  --container-max: 1200px;
  --nav-height: 80px;
  --nav-height-sm: 72px;

  --focus-ring: 0 0 0 2px rgba(200, 200, 200, 0.2);

  --metallic-gradient: linear-gradient(
    135deg,
    var(--metallic-shadow) 0%,
    var(--metallic-silver) 45%,
    var(--metallic-highlight) 55%,
    var(--metallic-mid) 100%
  );
  --metallic-gradient-h: linear-gradient(
    90deg,
    transparent 0%,
    rgba(200, 200, 200, 0.35) 50%,
    transparent 100%
  );
}

html {
  color-scheme: dark;
  text-rendering: optimizeLegibility;
}

* {
  box-sizing: border-box;
}

body {
  color: var(--text-color);
  font-family: 'Inter Tight', 'Roboto', system-ui, -apple-system, 'Segoe UI', Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(200, 200, 200, 0.04) 0%, transparent 55%),
    radial-gradient(ellipse at center, var(--void-black) 0%, var(--void-black-edge) 100%);
}

/* Blueprint grid overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    repeating-linear-gradient(0deg, transparent, transparent 39px, rgba(255, 255, 255, 0.018) 39px, rgba(255, 255, 255, 0.018) 40px),
    repeating-linear-gradient(90deg, transparent, transparent 39px, rgba(255, 255, 255, 0.018) 39px, rgba(255, 255, 255, 0.018) 40px);
  opacity: 0.7;
}

.container,
.nav-container {
  max-width: var(--container-max);
}

a {
  color: inherit;
  text-underline-offset: 0.18em;
  text-decoration-thickness: 0.06em;
}

a:hover {
  color: var(--signal-white);
}

:where(a, button, input, textarea, select):focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--radius-sm);
}

/* Headings — geometric sci-fi tone matching logo wordmark */
h1,
h2,
h3,
h4,
h5,
h6,
.section-title,
.synapticore-title {
  font-family: 'Oxanium', 'Chakra Petch', system-ui, -apple-system, 'Segoe UI', Helvetica, Arial, sans-serif;
  letter-spacing: 0.12em;
  font-weight: 600;
}

/* Tagline / subtitle — wide tracking like logo tagline */
.tagline,
.footer-description {
  font-family: 'Inter Tight', 'Roboto', system-ui, sans-serif !important;
  letter-spacing: 0.22em !important;
  text-transform: uppercase;
  font-weight: 400 !important;
  color: var(--phantom-grey) !important;
  text-shadow: none !important;
}

.slogan {
  font-family: 'Inter Tight', 'Roboto', system-ui, sans-serif !important;
  letter-spacing: 0.22em !important;
}

/* Navigation */
nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000 !important;
  background: rgba(10, 10, 10, 0.82);
  border-bottom: 1px solid var(--border-color);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

nav.scrolled {
  background: rgba(10, 10, 10, 0.94);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.55);
  border-bottom-color: var(--border-metallic);
}

nav .nav-container {
  max-width: none !important;
  width: 100%;
  margin: 0 !important;
  height: var(--nav-height);
  padding: 0 clamp(18px, 3vw, 44px);
}

.nav-link {
  color: var(--text-muted);
  font-family: 'Inter Tight', 'Roboto', sans-serif !important;
  font-weight: 500 !important;
  letter-spacing: 0.18em !important;
  text-transform: uppercase;
  font-size: 0.78rem !important;
  transition: color 0.25s ease, text-shadow 0.25s ease;
}

.nav-links {
  margin-left: auto;
}

.nav-link:hover {
  color: var(--signal-white);
  text-shadow: 0 0 16px rgba(255, 255, 255, 0.15);
  transform: none;
}

.nav-link::after {
  background: var(--metallic-gradient);
  height: 1px;
  box-shadow: var(--glow-metallic);
}

.nav-logo img {
  max-height: 22px !important;
  width: auto;
  opacity: 0.95;
  transition: opacity 0.25s ease, filter 0.25s ease;
}

.nav-logo:hover img {
  opacity: 1;
  filter: drop-shadow(0 0 8px rgba(200, 200, 200, 0.25));
}

.mobile-menu-btn {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-metallic);
  background: rgba(255, 255, 255, 0.02);
  color: var(--text-color);
}

.mobile-menu-btn .hamburger {
  width: 18px;
  height: 12px;
  position: relative;
  display: block;
}

.mobile-menu-btn .hamburger::before,
.mobile-menu-btn .hamburger::after,
.mobile-menu-btn .hamburger span {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  height: 1.5px;
  border-radius: 1px;
  background: rgba(255, 255, 255, 0.85);
  transition: transform 0.22s ease, opacity 0.22s ease, top 0.22s ease, bottom 0.22s ease;
}

.mobile-menu-btn .hamburger span {
  top: 5px;
}
.mobile-menu-btn .hamburger::before {
  top: 0;
}
.mobile-menu-btn .hamburger::after {
  bottom: 0;
}

body.nav-open .mobile-menu-btn .hamburger span {
  opacity: 0;
}
body.nav-open .mobile-menu-btn .hamburger::before {
  top: 5px;
  transform: rotate(45deg);
}
body.nav-open .mobile-menu-btn .hamburger::after {
  bottom: 5px;
  transform: rotate(-45deg);
}

.overlay {
  position: fixed;
  inset: 0;
  z-index: 900;
  background: rgba(0, 0, 0, 0.72);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.22s ease;
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
}

body.nav-open .overlay {
  opacity: 1;
  pointer-events: auto;
}

@media screen and (max-width: 860px) {
  .nav-container {
    height: var(--nav-height-sm);
  }

  .mobile-menu-btn {
    display: inline-flex;
    position: fixed;
    top: 14px;
    right: 16px;
    z-index: 1100;
    width: 40px;
    height: 40px;
    background: transparent;
    border: 1px solid var(--border-metallic);
  }

  nav .mobile-menu-btn {
    position: relative;
    top: auto;
    right: auto;
  }

  .nav-links {
    display: flex !important;
    position: fixed;
    top: 0;
    right: 0;
    height: auto;
    min-height: 100dvh;
    width: 240px;
    padding: 70px 24px 30px;
    flex-direction: column;
    gap: 0;
    align-items: stretch;
    background: rgba(10, 10, 10, 0.98);
    border-left: 1px solid var(--border-metallic);
    box-shadow: -12px 0 48px rgba(0, 0, 0, 0.6);
    transform: translateX(100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1050;
  }

  body.nav-open .nav-links {
    transform: translateX(0);
  }

  .nav-link {
    width: 100%;
    padding: 14px 0 !important;
    color: rgba(255, 255, 255, 0.82) !important;
    font-size: 0.75rem !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    background: transparent;
    border-radius: 0;
  }

  .nav-link:last-child {
    border-bottom: none;
  }

  .nav-link:hover,
  .nav-link:active {
    color: var(--signal-white) !important;
    text-shadow: none;
  }

  .nav-link::after {
    display: none;
  }

  .nav-logo img {
    max-height: 18px !important;
  }
}

/* Section titles — metallic underline accent */
.section-title {
  color: var(--signal-white);
  text-shadow: none;
  font-size: clamp(1.4rem, 2.5vw, 2.2rem);
  position: relative;
  padding-bottom: 20px;
}

.section-title::after {
  content: '';
  display: block;
  width: 48px;
  height: 1px;
  margin: 18px auto 0;
  background: var(--metallic-gradient);
  box-shadow: var(--glow-metallic);
}

/* Cards & surfaces — sharp, metallic glass */
.service-card,
.advantage-item,
.tag,
.arch-container {
  border-radius: var(--radius-md) !important;
  border: 1px solid var(--border-color) !important;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.045) 0%, rgba(255, 255, 255, 0.012) 100%) !important;
  box-shadow: var(--shadow-soft) !important;
}

.service-card:hover,
.advantage-item:hover,
.tag:hover {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.07) 0%, rgba(255, 255, 255, 0.025) 100%) !important;
  border-color: var(--border-metallic) !important;
  box-shadow: var(--glow-metallic), var(--shadow-elev) !important;
  transform: translateY(-3px) !important;
}

.service-card:hover::after,
.advantage-item:hover::after,
.tag:hover::after {
  background: var(--metallic-gradient-h) !important;
  animation: metallic-sweep 2.5s ease-in-out infinite !important;
}

@keyframes metallic-sweep {
  0%,
  100% {
    opacity: 0.4;
    transform: translateX(-100%);
  }
  50% {
    opacity: 0.9;
    transform: translateX(100%);
  }
}

.service-header {
  border-bottom: 1px solid rgba(255, 255, 255, 0.05) !important;
}

.service-header::before {
  background: var(--metallic-gradient) !important;
  width: 3px !important;
}

.service-title i,
.service-link-icon,
.advantage-icon i,
.contact-info i {
  color: var(--metallic-silver) !important;
  filter: drop-shadow(0 0 6px rgba(200, 200, 200, 0.2)) !important;
}

.service-link-icon {
  background: rgba(200, 200, 200, 0.06) !important;
  border: 1px solid var(--border-metallic) !important;
  border-radius: var(--radius-sm) !important;
}

.service-link-icon:hover {
  background: rgba(200, 200, 200, 0.12) !important;
  border-color: var(--metallic-silver) !important;
  box-shadow: var(--glow-metallic) !important;
}

.service-feature::before {
  border-radius: 0 !important;
  background: var(--metallic-silver) !important;
  box-shadow: 0 0 6px rgba(200, 200, 200, 0.25) !important;
  width: 5px !important;
  height: 5px !important;
}

.advantage-icon {
  border-radius: var(--radius-sm) !important;
  background: linear-gradient(135deg, rgba(200, 200, 200, 0.06), rgba(160, 160, 160, 0.04)) !important;
}

.advantage-icon::before {
  background: var(--metallic-gradient) !important;
  border-radius: var(--radius-sm) !important;
}

.tag::before {
  background: var(--metallic-silver) !important;
  opacity: 0.06 !important;
}

.tag:hover {
  border-color: var(--border-metallic) !important;
  color: var(--signal-white) !important;
  box-shadow: var(--glow-metallic), var(--shadow-soft) !important;
}

/* Footer */
footer {
  background: rgba(10, 10, 10, 0.6) !important;
  border-top: 1px solid var(--border-color) !important;
}

.footer-links h4::after,
.footer-contact h4::after {
  background: var(--metallic-gradient) !important;
  box-shadow: var(--glow-metallic) !important;
  height: 1px !important;
}

.social-link {
  border-radius: var(--radius-sm) !important;
}

.social-link:hover {
  border-color: var(--border-metallic) !important;
  box-shadow: var(--glow-metallic) !important;
  color: var(--signal-white) !important;
}

/* Hero */
.synapticore-title {
  letter-spacing: 0.18em !important;
  text-shadow: 0 0 30px rgba(200, 200, 200, 0.12) !important;
  font-weight: 700 !important;
}

/* Hero — logo uses original PNG artwork */
  color: var(--metallic-silver) !important;
  opacity: 0.7;
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.scroll-btn:hover i {
  opacity: 1;
}

/* Background ambient text — disabled */
.bg-animation,
.bg-text,
.ambient-text {
  display: none !important;
}

/* SynaFlex page overrides */
.hero-badge,
.quote-block,
.feature-icon,
.timeline-dot,
.stat-number,
.highlight {
  color: var(--metallic-silver) !important;
}

.cta-button,
.btn-primary {
  background: var(--signal-white) !important;
  color: var(--void-black) !important;
  border: 1px solid var(--signal-white) !important;
  border-radius: var(--radius-sm) !important;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 600;
  transition: all 0.25s ease;
}

.cta-button:hover,
.btn-primary:hover {
  background: transparent !important;
  color: var(--signal-white) !important;
  box-shadow: var(--glow-metallic) !important;
}

.btn-secondary,
.btn-outline {
  background: transparent !important;
  color: var(--signal-white) !important;
  border: 1px solid var(--border-metallic) !important;
  border-radius: var(--radius-sm) !important;
}

.btn-secondary:hover,
.btn-outline:hover {
  border-color: var(--metallic-silver) !important;
  box-shadow: var(--glow-metallic) !important;
}

/* Docs pages */
main.doc {
  max-width: 800px !important;
  margin: 0 auto !important;
  padding: 64px 28px 120px !important;
  width: 100%;
  box-sizing: border-box;
}

main.doc > h1,
main.doc > h2,
main.doc > .paper > h1,
main.doc > .paper > h2 {
  text-align: center;
}

main.doc > p:first-of-type,
main.doc > .paper > p:first-of-type {
  text-align: center;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted) !important;
  font-size: 0.85rem;
}

main.doc .paper > p.paper-meta {
  text-align: center;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted) !important;
  font-size: 0.85rem;
}

main.doc .paper[hidden] {
  display: none !important;
}

/* Research page: left paper menu */
.research-layout {
  display: flex;
  align-items: flex-start;
  gap: 48px;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 28px;
  box-sizing: border-box;
}

.research-layout main.doc {
  flex: 1;
  min-width: 0;
  margin: 0 !important;
  padding-left: 0 !important;
  padding-right: 0 !important;
}

.paper-nav {
  position: sticky;
  top: calc(var(--nav-height, 80px) + 40px);
  flex: 0 0 250px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 64px;
  padding: 18px 14px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.025);
  box-sizing: border-box;
}

.paper-nav-label {
  font-family: 'Chakra Petch', sans-serif;
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin: 0 8px 6px;
}

.paper-nav a {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 10px 10px;
  border-left: 2px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--text-muted) !important;
  font-family: 'Roboto', sans-serif;
  font-size: 0.9rem;
  line-height: 1.45;
  text-decoration: none;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.paper-nav a:hover {
  color: var(--signal-white) !important;
  background: rgba(255, 255, 255, 0.04);
}

.paper-nav a.active {
  color: var(--signal-white) !important;
  background: rgba(255, 255, 255, 0.06);
  border-left-color: var(--metallic-silver, #C8C8C8);
}

.paper-nav-no {
  font-family: 'Chakra Petch', sans-serif;
  font-size: 0.8rem;
  opacity: 0.7;
}

@media screen and (max-width: 860px) {
  .research-layout {
    flex-direction: column;
    gap: 0;
    padding: 0;
  }

  .paper-nav {
    position: static;
    flex: none;
    width: calc(100% - 36px);
    margin: 8px 18px 0;
  }
}

main.doc p.paper-formula {
  text-align: center;
  font-family: 'Times New Roman', serif;
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.9);
  margin: 18px 0;
}

main.doc > .architecture-interactive {
  text-align: center;
  display: flex;
  justify-content: center;
}

body#preview .architecture-interactive {
  margin: 40px auto 48px !important;
  max-width: 980px;
  padding: 0 !important;
}

body#preview .arch-container {
  padding: 0 !important;
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
  border-radius: 0 !important;
}

body#preview .arch-base-image {
  filter: none !important;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-soft);
}

body#preview {
  padding-top: var(--nav-height) !important;
}

@media screen and (max-width: 860px) {
  body#preview {
    padding-top: 70px !important;
  }

  body#preview nav {
    display: none !important;
  }

  body#preview .back-btn {
    display: flex !important;
  }

  body#preview main.doc {
    padding: 48px 18px 88px !important;
  }

  body#preview main.doc h1 {
    font-size: clamp(1.35rem, 5.2vw, 1.75rem) !important;
    line-height: 1.2;
    margin: 12px 0 8px;
  }

  body#preview main.doc h2 {
    font-size: clamp(0.78rem, 2.6vw, 0.95rem) !important;
    line-height: 1.45;
    margin: 10px 0 14px;
    font-weight: 600;
  }

  body#preview main.doc h3 {
    font-size: 1rem !important;
    margin: 16px 0 6px;
  }

  body#preview main.doc h4 {
    font-size: 0.92rem !important;
    margin: 14px 0 6px;
  }

  body#preview main.doc h5 {
    font-size: 0.88rem !important;
  }

  body#preview main.doc h6 {
    font-size: 0.82rem !important;
  }

  body#preview main.doc p,
  body#preview main.doc li {
    font-size: 0.9375rem;
    line-height: 1.7;
  }

  body#preview main.doc > p:first-of-type {
    font-size: 0.8125rem;
    line-height: 1.55;
  }

  body#preview main.doc pre {
    font-size: 0.8125rem;
    padding: 12px 14px;
  }

  body#preview main.doc table {
    font-size: 0.8125rem;
  }

  body#preview main.doc th,
  body#preview main.doc td {
    padding: 8px 10px;
  }
}

html,
body#preview {
  background-color: var(--void-black-edge) !important;
}

body#preview {
  background:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(200, 200, 200, 0.03) 0%, transparent 55%),
    radial-gradient(ellipse at center, var(--void-black) 0%, var(--void-black-edge) 100%) !important;
  margin: 0;
}

main.doc h1 {
  font-size: clamp(2.1rem, 2.8vw, 3rem);
  line-height: 1.15;
  margin: 26px 0 12px;
  letter-spacing: 0.1em;
}

main.doc h2 {
  color: rgba(255, 255, 255, 0.86);
  margin: 22px 0 10px;
  letter-spacing: 0.08em;
}

main.doc h3,
main.doc h4,
main.doc h5,
main.doc h6 {
  color: rgba(255, 255, 255, 0.86);
  margin: 18px 0 8px;
}

main.doc h4 {
  font-size: 1.15rem;
}

main.doc h5 {
  font-size: 1rem;
}

main.doc h6 {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.75);
}

main.doc p,
main.doc li {
  color: var(--text-secondary);
  line-height: 1.85;
}

main.doc hr {
  border: 0;
  border-top: 1px solid var(--border-color);
  margin: 22px 0;
}

main.doc a {
  color: var(--metallic-silver);
  text-decoration: none;
}

main.doc a:hover {
  color: var(--metallic-highlight);
  text-decoration: underline;
}

main.doc pre {
  background: rgba(255, 255, 255, 0.035) !important;
  border: 1px solid var(--border-color) !important;
  color: rgba(255, 255, 255, 0.86) !important;
  border-radius: var(--radius-md) !important;
  padding: 14px 16px;
  overflow: auto;
  box-shadow: var(--shadow-soft);
}

main.doc code {
  background: rgba(255, 255, 255, 0.05) !important;
  color: rgba(255, 255, 255, 0.86) !important;
  border-radius: var(--radius-sm);
}

main.doc table {
  width: 100%;
  border-collapse: collapse;
  margin: 18px 0;
  overflow: hidden;
  border-radius: var(--radius-md);
}

main.doc th,
main.doc td {
  border: 1px solid var(--border-color) !important;
  padding: 10px 12px;
}

main.doc th {
  background: rgba(255, 255, 255, 0.035);
  color: rgba(255, 255, 255, 0.84);
}

/* Research page back button */
.back-btn {
  border-radius: var(--radius-sm) !important;
  border-color: var(--border-metallic) !important;
}

.back-btn:hover {
  border-color: var(--metallic-silver) !important;
  box-shadow: var(--glow-metallic) !important;
}

/* ═══════════════════════════════════════════
   FX LAYER — neural, chrome, holographic UI
   ═══════════════════════════════════════════ */

#neural-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.85;
}

.cursor-glow {
  position: fixed;
  top: 0;
  left: 0;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  pointer-events: none;
  z-index: 1;
  background: radial-gradient(
    circle,
    rgba(200, 200, 200, 0.07) 0%,
    rgba(200, 200, 200, 0.03) 35%,
    transparent 70%
  );
  mix-blend-mode: screen;
  will-change: transform;
}

/* Film grain + vignette */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 2;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode: overlay;
}

header,
section,
footer {
  position: relative;
  z-index: 3;
}

nav {
  z-index: 1000 !important;
}

/* Section glow dividers */
section + section::before {
  content: '';
  display: block;
  width: min(60%, 400px);
  height: 1px;
  margin: 0 auto 0;
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(90deg, transparent, rgba(200, 200, 200, 0.25), transparent);
  box-shadow: 0 0 30px rgba(200, 200, 200, 0.08);
}

/* Orbital rings around logo */
.brain-logo-wrapper {
  overflow: visible !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  padding: 8% 4%;
  perspective: 900px;
  --ice: 191, 227, 255;
}

.hero-orbit {
  position: absolute;
  inset: -18%;
  pointer-events: none;
  z-index: 0;
  transform: translate(calc(var(--mx, 0) * -14px), calc(var(--my, 0) * -10px));
  transition: transform 0.8s cubic-bezier(0.2, 0.7, 0.2, 1);
}

.orbit-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid transparent;
}

.orbit-ring-1 {
  border-color: rgba(var(--ice), 0.13);
  animation: orbit-spin 12s linear infinite;
}

.orbit-ring-2 {
  inset: 8%;
  border-color: rgba(var(--ice), 0.1);
  border-style: dashed;
  animation: orbit-spin 16s linear infinite reverse;
  animation-delay: -5s;
}

.orbit-ring-3 {
  inset: 16%;
  border-color: rgba(var(--ice), 0.07);
  animation: orbit-spin 22s linear infinite;
}

/* Electrons: diamond nodes like the logo's synapses */
.orbit-ring::before {
  content: '';
  position: absolute;
  width: 7px;
  height: 7px;
  top: -4px;
  left: 50%;
  background: #fff;
  transform: translateX(-50%) rotate(45deg);
  box-shadow:
    0 0 6px #fff,
    0 0 16px rgba(var(--ice), 0.9),
    0 0 32px rgba(var(--ice), 0.45);
  animation: electron-flicker 2.4s ease-in-out infinite;
}

.orbit-ring-3::before {
  top: auto;
  bottom: -4px;
  width: 5px;
  height: 5px;
  animation-delay: -1.2s;
}

/* Comet tails trailing each electron along its ring */
.orbit-ring::after {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: 50%;
  padding: 1.5px;
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box exclude, linear-gradient(#000 0 0);
}

.orbit-ring-1::after {
  background: conic-gradient(transparent 0deg 280deg, rgba(var(--ice), 0.6) 360deg);
}

.orbit-ring-2::after {
  background: conic-gradient(rgba(var(--ice), 0.55) 0deg, transparent 80deg 360deg);
}

.orbit-ring-3::after {
  background: conic-gradient(transparent 0deg 110deg, rgba(var(--ice), 0.45) 180deg, transparent 180deg);
}

@keyframes electron-flicker {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.55; }
}

@keyframes orbit-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* Chrome shimmer title */
.chrome-text {
  background: linear-gradient(
    105deg,
    #4a4a4a 0%,
    #8a8a8a 20%,
    #ffffff 42%,
    #d0d0d0 58%,
    #ffffff 72%,
    #6a6a6a 100%
  ) !important;
  background-size: 220% auto !important;
  -webkit-background-clip: text !important;
  background-clip: text !important;
  -webkit-text-fill-color: transparent !important;
  color: transparent !important;
  animation: chrome-shine 5s linear infinite !important;
  filter: drop-shadow(0 0 24px rgba(200, 200, 200, 0.2));
}

@keyframes chrome-shine {
  0% { background-position: 0% center; }
  100% { background-position: 220% center; }
}

/* Brain logo — pointer-driven 3D tilt (--mx/--my from site.js) + float + ice glow */
.brain-art {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 480px;
  transform: rotateX(calc(var(--my, 0) * -12deg)) rotateY(calc(var(--mx, 0) * 16deg));
  transition: transform 0.8s cubic-bezier(0.2, 0.7, 0.2, 1);
  will-change: transform;
}

.brain-spin {
  transform-origin: center center;
  animation: logo-spin-slow 40s linear infinite;
  will-change: transform;
}

.brain-logo {
  width: 100% !important;
  max-width: 480px !important;
  height: auto !important;
  animation:
    brain-float 8s ease-in-out infinite,
    logo-pulse-glow 6s ease-in-out infinite !important;
  filter: drop-shadow(0 0 20px rgba(var(--ice), 0.12)) !important;
  position: relative;
  z-index: 2;
  background: transparent !important;
}

@keyframes logo-spin-slow {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes brain-float {
  0%, 100% { transform: translateY(0); }
  25% { transform: translateY(-8px); }
  50% { transform: translateY(-3px); }
  75% { transform: translateY(-10px); }
}

@keyframes logo-pulse-glow {
  0%, 100% {
    filter: drop-shadow(0 0 18px rgba(var(--ice), 0.1));
  }
  50% {
    filter: drop-shadow(0 0 34px rgba(var(--ice), 0.26));
  }
}

/* Slogan decode glow */
.slogan .char.decoding {
  color: var(--signal-white) !important;
  text-shadow: 0 0 14px rgba(255, 255, 255, 0.8), 0 0 28px rgba(200, 200, 200, 0.4) !important;
}

.slogan.decoded,
.slogan.decoded .char.locked {
  color: rgba(200, 200, 200, 0.92) !important;
  text-shadow: 0 0 10px rgba(200, 200, 200, 0.25) !important;
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(36px) scale(0.97);
  transition:
    opacity 0.75s cubic-bezier(0.22, 1, 0.36, 1) var(--reveal-delay, 0s),
    transform 0.75s cubic-bezier(0.22, 1, 0.36, 1) var(--reveal-delay, 0s);
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0) scale(1);
}

header .logo-container.reveal {
  transform: translateY(24px) scale(0.95);
}

header .logo-container.revealed {
  transform: translateY(0) scale(1);
}

/* 3D tilt cards */
.tilt-card {
  transform-style: preserve-3d;
  transition:
    transform 0.15s ease-out,
    box-shadow 0.35s ease,
    border-color 0.35s ease !important;
  will-change: transform;
}

.tilt-card.is-tilting {
  transform: perspective(900px) rotateX(var(--tilt-x, 0deg)) rotateY(var(--tilt-y, 0deg)) translateY(-6px) scale(1.01) !important;
}

/* Holographic card border on hover */
.service-card,
.advantage-item {
  position: relative;
  overflow: hidden !important;
}

.service-card > *,
.advantage-item > * {
  position: relative;
  z-index: 1;
}

.service-card::before,
.advantage-item::before {
  content: '' !important;
  position: absolute !important;
  inset: -1px !important;
  border-radius: inherit !important;
  background: conic-gradient(
    from var(--holo-angle, 0deg),
    transparent 0deg,
    rgba(255, 255, 255, 0.45) 60deg,
    transparent 120deg,
    rgba(200, 200, 200, 0.3) 200deg,
    transparent 280deg
  ) !important;
  opacity: 0 !important;
  transition: opacity 0.35s ease !important;
  z-index: 0 !important;
  animation: holo-spin 4s linear infinite paused !important;
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0) !important;
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0) !important;
  -webkit-mask-composite: xor !important;
  mask-composite: exclude !important;
  padding: 1px !important;
}

.service-card:hover::before,
.advantage-item:hover::before {
  opacity: 1 !important;
  animation-play-state: running !important;
}

@property --holo-angle {
  syntax: '<angle>';
  initial-value: 0deg;
  inherits: false;
}

@keyframes holo-spin {
  to { --holo-angle: 360deg; }
}

.service-card:hover,
.advantage-item:hover {
  box-shadow:
    0 0 0 1px rgba(200, 200, 200, 0.12),
    0 0 40px rgba(200, 200, 200, 0.12),
    0 0 80px rgba(255, 255, 255, 0.04),
    var(--shadow-elev) !important;
}

/* Tags — shimmer pulse */
.tag {
  position: relative;
  overflow: hidden !important;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.82rem !important;
}

.tag::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 60%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.12), transparent);
  animation: tag-shimmer 5s ease-in-out infinite;
  pointer-events: none;
}

.tag:nth-child(2n)::after { animation-delay: -1.5s; }
.tag:nth-child(3n)::after { animation-delay: -3s; }

@keyframes tag-shimmer {
  0%, 100% { left: -100%; opacity: 0; }
  50% { left: 150%; opacity: 1; }
}

.tag:hover {
  color: var(--signal-white) !important;
  text-shadow: 0 0 12px rgba(255, 255, 255, 0.3);
}

/* Section title — wider glow line */
.section-title::after {
  width: 80px !important;
  height: 2px !important;
  animation: title-line-pulse 3s ease-in-out infinite;
}

@keyframes title-line-pulse {
  0%, 100% { box-shadow: 0 0 8px rgba(200, 200, 200, 0.2); width: 60px; }
  50% { box-shadow: 0 0 20px rgba(255, 255, 255, 0.35); width: 100px; }
}

/* Scroll button — chevron only, no ring/line */
.scroll-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: transparent;
  animation: none !important;
}

.scroll-btn::before {
  display: none;
}

.scroll-btn i {
  animation: scroll-bounce 2s ease-in-out infinite;
}

@keyframes scroll-bounce {
  0%, 100% { transform: translateY(0); opacity: 0.6; }
  50% { transform: translateY(4px); opacity: 1; }
}

/* Nav logo subtle glow on scroll */
nav.scrolled .nav-logo img {
  filter: drop-shadow(0 0 8px rgba(200, 200, 200, 0.25));
}

/* Reduce motion */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1 !important;
    transform: none !important;
  }

  .brain-art,
  .brain-spin,
  .brain-logo {
    animation: none !important;
    transform: none !important;
  }

  #neural-canvas,
  .cursor-glow {
    display: none !important;
  }
}

@media screen and (max-width: 768px) {
  .hero-orbit {
    inset: -12%;
  }

  .orbit-ring::before {
    width: 5px;
    height: 5px;
  }

  .cursor-glow {
    display: none;
  }

  #neural-canvas {
    opacity: 0.45;
  }
}

@media screen and (max-width: 860px) {
  html body#preview nav,
  body#preview nav {
    display: none !important;
    visibility: hidden !important;
  }

  html body#preview .back-btn,
  body#preview .back-btn {
    display: flex !important;
    visibility: visible !important;
  }
}