/* ============================================
   RICCHE — Electric Neon Blue Theme
   Light Mode Default | Glowing Elements
   ============================================ */

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

/* ---- Skip Link (Accessibility) ---- */
.skip-link {
  position: absolute;
  top: -100%;
  left: 16px;
  z-index: 100000;
  padding: 8px 16px;
  background: var(--neon);
  color: #fff;
  border-radius: 4px;
  font-size: 0.875rem;
  text-decoration: none;
  transition: top 0.2s;
}
.skip-link:focus {
  top: 16px;
}

/* ---- Theme Variables ---- */
:root {
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;

  /* Electric neon blues */
  --neon: #0055FF;
  --neon-bright: #0088FF;
  --neon-cyan: #00C8FF;
  --neon-glow: rgba(0, 85, 255, 0.35);
  --neon-glow-strong: rgba(0, 85, 255, 0.5);
  --neon-subtle: rgba(0, 85, 255, 0.08);
  --neon-bg: rgba(0, 85, 255, 0.04);

  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-smooth: cubic-bezier(0.25, 1, 0.5, 1);
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ---- Light theme (DEFAULT) ---- */
[data-theme="light"] {
  --bg: #f5f7fb;
  --bg-alt: #ffffff;
  --bg-card: rgba(255, 255, 255, 0.8);
  --bg-card-hover: rgba(255, 255, 255, 1);
  --text: #0a1628;
  --text-strong: #000000;
  --text-body: #2d3748;
  --text-secondary: #4a5568;
  --text-muted: #94a3b8;
  --border-color: rgba(0, 0, 0, 0.1);
  --border-hover: rgba(0, 85, 255, 0.35);
  --logo-filter: none;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-card: 0 4px 24px rgba(0,0,0,0.08);
  --shadow-glow: 0 4px 30px rgba(0, 85, 255, 0.12);
  --code-bg: rgba(0, 85, 255, 0.04);
  --hero-overlay: rgba(245, 247, 251, 0.6);
  --section-border: rgba(0, 0, 0, 0.06);
}

/* ---- Dark theme ---- */
[data-theme="dark"] {
  --bg: #060a14;
  --bg-alt: #0c1424;
  --bg-card: rgba(255, 255, 255, 0.04);
  --bg-card-hover: rgba(255, 255, 255, 0.08);
  --text: #eef2f8;
  --text-strong: #ffffff;
  --text-body: #c5cdd8;
  --text-secondary: #8a96aa;
  --text-muted: #4a5568;
  --border-color: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(0, 136, 255, 0.35);
  --logo-filter: invert(1) brightness(1.8);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-card: 0 4px 24px rgba(0,0,0,0.4);
  --shadow-glow: 0 4px 30px rgba(0, 85, 255, 0.2);
  --code-bg: rgba(255, 255, 255, 0.05);
  --hero-overlay: rgba(6, 10, 20, 0.5);
  --section-border: rgba(255, 255, 255, 0.05);
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  background: var(--bg);
  color: var(--text-body);
  overflow-x: hidden;
  line-height: 1.7;
  transition: background 0.5s, color 0.4s;
}

::selection {
  background: var(--neon);
  color: white;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* ---- Preloader ---- */
.preloader {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.8s var(--ease), visibility 0.8s;
}
.preloader.hidden { opacity: 0; visibility: hidden; pointer-events: none; }

.preloader-logo {
  width: 68px;
  height: 68px;
  margin: 0 auto 24px;
}
.preloader-logo img {
  width: 100%;
  height: 100%;
  filter: var(--logo-filter);
  animation: preloaderPulse 1.5s ease-in-out infinite;
}
@keyframes preloaderPulse {
  0%, 100% { opacity: 0.3; transform: scale(0.95); }
  50% { opacity: 1; transform: scale(1.05); }
}

.preloader-bar {
  width: 140px;
  height: 3px;
  background: var(--border-color);
  border-radius: 3px;
  overflow: hidden;
}
.preloader-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--neon), var(--neon-cyan));
  border-radius: 3px;
  animation: preloaderFill 1.2s var(--ease) forwards;
}
@keyframes preloaderFill { to { width: 100%; } }

/* ========================================
   NAVIGATION
   ======================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: background 0.4s, border-color 0.4s, box-shadow 0.4s;
  border-bottom: 1px solid transparent;
}
.header.scrolled {
  background: var(--bg-alt);
  border-bottom-color: var(--section-border);
  box-shadow: var(--shadow-sm);
}
.header::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 200%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--neon), var(--neon-cyan), transparent, var(--neon-bright), transparent);
  opacity: 0;
  transition: opacity 0.4s;
  animation: footerShimmer 8s linear infinite;
}
.header.scrolled::after { opacity: 0.3; }

.nav-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 36px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

/* ---- Logo: Bigger & Prominent ---- */
.logo {
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.45rem;
  letter-spacing: 0.2em;
  color: var(--text-strong);
  z-index: 1001;
}

.logo-mark {
  width: 54px;
  height: 54px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.4s var(--ease);
}
.logo:hover .logo-mark {
  transform: scale(1.08);
}
.logo-mark img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: var(--logo-filter);
  transition: filter 0.4s;
}
.logo-mark-sm {
  width: 40px;
  height: 40px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.3s;
  position: relative;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--neon), var(--neon-cyan), var(--neon-bright), var(--neon));
  background-size: 300% 100%;
  border-radius: 2px;
  transition: width 0.4s var(--ease);
  animation: glowSweep 3s linear infinite;
}
.nav-link:hover, .nav-link.active { color: var(--text-strong); }
.nav-link:hover::after, .nav-link.active::after { width: 100%; }

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 1001;
}

/* ---- Nav Enquire Button ---- */
.btn-nav {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: 100px;
  background: var(--neon);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 600;
  transition: transform 0.3s var(--ease), box-shadow 0.3s, gap 0.3s;
}
.btn-nav:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px var(--neon-glow);
  gap: 12px;
}

/* ---- Theme toggle ---- */
.theme-toggle {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: none;
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.3s, transform 0.4s var(--ease);
  color: var(--text-secondary);
}
.theme-toggle:hover {
  color: var(--neon);
  transform: rotate(30deg) scale(1.15);
}
.theme-toggle svg { width: 18px; height: 18px; }
[data-theme="dark"] .icon-moon { display: none; }
[data-theme="light"] .icon-sun { display: none; }

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-strong);
  transition: transform 0.3s, opacity 0.3s;
  display: block;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ========================================
   LAYOUT
   ======================================== */
.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 36px;
}

.section {
  padding: 130px 0;
  position: relative;
  overflow: hidden;
}

.section-alt {
  background: var(--bg-alt);
  transition: background 0.5s;
}

/* ---- Section Dividers ---- */
.section-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding-bottom: 60px;
}
.divider-line {
  width: 80px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--neon-subtle), transparent);
  position: relative;
  overflow: hidden;
}
.divider-line::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, var(--neon), transparent);
  animation: shimmerLine 3s linear infinite;
}
@keyframes shimmerLine {
  0% { left: -100%; }
  100% { left: 100%; }
}
.divider-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--neon);
  box-shadow: 0 0 12px var(--neon-glow);
  animation: dotPulse 2.5s ease-in-out infinite;
}

/* ========================================
   HERO
   ======================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
}

#networkCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-gradient {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 50% 50%, transparent 20%, var(--bg) 100%),
    radial-gradient(ellipse 30% 25% at 50% 100%, var(--neon-subtle) 0%, transparent 60%);
  pointer-events: none;
}

/* Continuous flowing aurora behind hero */
.hero::before {
  content: '';
  position: absolute;
  inset: -60%;
  width: 220%;
  height: 220%;
  background:
    conic-gradient(from 0deg at 50% 50%,
      transparent 0deg,
      var(--neon) 60deg,
      transparent 120deg,
      var(--neon-cyan) 200deg,
      transparent 260deg,
      var(--neon-bright) 320deg,
      transparent 360deg
    );
  opacity: 0.03;
  filter: blur(60px);
  animation: heroAurora 30s linear infinite;
  pointer-events: none;
  z-index: 0;
}
[data-theme="dark"] .hero::before { opacity: 0.06; }

@keyframes heroAurora {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Rotating planet video — center-left of hero, blended into background */
.hero-planet {
  position: absolute;
  top: 50%;
  left: 8%;
  transform: translateY(-50%);
  width: 52vmin;
  height: 52vmin;
  z-index: 1;
  pointer-events: none;
  transition: transform 0.3s ease-out;
}
.hero-planet video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  background: transparent;
  /* Light mode: full planet visible with soft edge fade */
  -webkit-mask-image: radial-gradient(circle at center, #000 54%, rgba(0,0,0,0.3) 60%, transparent 66%);
  mask-image: radial-gradient(circle at center, #000 54%, rgba(0,0,0,0.3) 60%, transparent 66%);
  transition: -webkit-mask-image 0.6s ease, mask-image 0.6s ease;
}
/* Dark mode: wider crop showing stars around planet */
[data-theme="dark"] .hero-planet video {
  -webkit-mask-image: radial-gradient(circle at center, #000 50%, rgba(0,0,0,0.5) 62%, rgba(0,0,0,0.12) 72%, transparent 82%);
  mask-image: radial-gradient(circle at center, #000 50%, rgba(0,0,0,0.5) 62%, rgba(0,0,0,0.12) 72%, transparent 82%);
}
/* Outer atmospheric glow */
.planet-glow {
  position: absolute;
  inset: -30%;
  border-radius: 50%;
  background: radial-gradient(circle, var(--neon-glow) 0%, transparent 50%);
  opacity: 0.35;
  animation: planetGlowPulse 5s ease-in-out infinite;
  pointer-events: none;
  z-index: -1;
}
@keyframes planetGlowPulse {
  0%, 100% { opacity: 0.3; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.06); }
}
/* Atmosphere rim — clean subtle ring, identical in both modes */
.planet-atmosphere {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 58%;
  height: 58%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  border: none;
  box-shadow:
    0 0 30px rgba(0, 200, 255, 0.06),
    0 0 60px rgba(0, 136, 255, 0.04);
  pointer-events: none;
}
[data-theme="dark"] .planet-glow { opacity: 0.5; }

/* Floating glow orbs */
.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  opacity: 0.4;
  --px: 0px;
  --py: 0px;
}
.hero-orb-1 {
  width: 600px; height: 600px;
  background: var(--neon);
  top: 5%; left: -15%;
  animation: orbFloat 8s ease-in-out infinite;
}
.hero-orb-2 {
  width: 450px; height: 450px;
  background: var(--neon-cyan);
  bottom: 5%; right: -10%;
  animation: orbFloat 10s ease-in-out infinite reverse;
}
.hero-orb-3 {
  width: 350px; height: 350px;
  background: var(--neon-bright);
  top: 45%; left: 55%;
  animation: orbFloat 12s ease-in-out infinite 2s;
}
@keyframes orbFloat {
  0% { transform: translate(var(--px), var(--py)) scale(1); }
  25% { transform: translate(calc(40px + var(--px)), calc(-30px + var(--py))) scale(1.08); }
  50% { transform: translate(calc(-10px + var(--px)), calc(20px + var(--py))) scale(0.96); }
  75% { transform: translate(calc(-35px + var(--px)), calc(-15px + var(--py))) scale(1.04); }
  100% { transform: translate(var(--px), var(--py)) scale(1); }
}

[data-theme="light"] .hero-orb { opacity: 0.18; }
[data-theme="dark"] .hero-orb { opacity: 0.3; }

/* ---- Section-wide animated backgrounds ---- */
.section-bg-anim {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}

/* Flowing gradient mesh that loops endlessly */
.section-bg-anim::before {
  content: '';
  position: absolute;
  inset: -50%;
  width: 200%;
  height: 200%;
  background:
    radial-gradient(ellipse 40% 35% at 20% 30%, var(--neon), transparent 70%),
    radial-gradient(ellipse 35% 40% at 80% 70%, var(--neon-cyan), transparent 70%),
    radial-gradient(ellipse 30% 30% at 50% 50%, var(--neon-bright), transparent 60%);
  opacity: 0.04;
  animation: gradientDrift 20s linear infinite;
}
.section-bg-anim::after {
  content: '';
  position: absolute;
  inset: -30%;
  width: 160%;
  height: 160%;
  background:
    radial-gradient(ellipse 45% 30% at 70% 20%, var(--neon-bright), transparent 65%),
    radial-gradient(ellipse 30% 45% at 30% 80%, var(--neon), transparent 65%);
  opacity: 0.03;
  animation: gradientDrift 28s linear infinite reverse;
}

@keyframes gradientDrift {
  0% { transform: translate(0, 0) rotate(0deg); }
  100% { transform: translate(0, 0) rotate(360deg); }
}

/* Individual floating orbs with continuous loop paths */
.section-bg-anim .bg-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
}
.section-bg-anim .bg-orb-1 {
  width: 500px; height: 500px;
  background: var(--neon);
  opacity: 0.07;
  top: -10%; right: -5%;
  animation: orbLoop1 16s linear infinite;
}
.section-bg-anim .bg-orb-2 {
  width: 400px; height: 400px;
  background: var(--neon-cyan);
  opacity: 0.06;
  bottom: -5%; left: -5%;
  animation: orbLoop2 22s linear infinite;
}
.section-bg-anim .bg-orb-3 {
  width: 300px; height: 300px;
  background: var(--neon-bright);
  opacity: 0.05;
  top: 30%; left: 40%;
  animation: orbLoop3 18s linear infinite;
}

/* Seamless continuous loop paths — no pauses, no easing stops */
@keyframes orbLoop1 {
  0%   { transform: translate(0, 0) scale(1); }
  25%  { transform: translate(60px, -40px) scale(1.1); }
  50%  { transform: translate(-30px, 30px) scale(0.95); }
  75%  { transform: translate(-50px, -20px) scale(1.05); }
  100% { transform: translate(0, 0) scale(1); }
}
@keyframes orbLoop2 {
  0%   { transform: translate(0, 0) scale(1); }
  25%  { transform: translate(-40px, -50px) scale(1.08); }
  50%  { transform: translate(50px, -10px) scale(0.92); }
  75%  { transform: translate(20px, 40px) scale(1.06); }
  100% { transform: translate(0, 0) scale(1); }
}
@keyframes orbLoop3 {
  0%   { transform: translate(0, 0) scale(1); }
  25%  { transform: translate(45px, 30px) scale(1.12); }
  50%  { transform: translate(-35px, -25px) scale(0.9); }
  75%  { transform: translate(25px, -45px) scale(1.03); }
  100% { transform: translate(0, 0) scale(1); }
}

[data-theme="dark"] .section-bg-anim .bg-orb { opacity: 0.1; }
[data-theme="dark"] .section-bg-anim .bg-orb-1 { opacity: 0.13; }
[data-theme="dark"] .section-bg-anim .bg-orb-2 { opacity: 0.1; }
[data-theme="dark"] .section-bg-anim::before { opacity: 0.06; }
[data-theme="dark"] .section-bg-anim::after { opacity: 0.05; }

/* Section background images with overlay */
.section-bg-image {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}
.section-bg-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.1;
  filter: grayscale(0.3) brightness(1.1);
  pointer-events: none;
  transform: translateZ(0);
}
[data-theme="dark"] .section-bg-image img {
  opacity: 0.12;
  filter: grayscale(0.3) brightness(0.7);
}
.section > .container,
.section > .section-divider { position: relative; z-index: 1; }

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
  padding: 0 24px;
  margin-left: 38%;
  margin-right: auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 10px 24px;
  border-radius: 100px;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 32px;
  backdrop-filter: blur(12px);
}
.badge-pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--neon);
  box-shadow: 0 0 12px var(--neon-glow);
  animation: dotPulse 2s ease-in-out infinite;
}
.hero-badge {
  position: relative;
  overflow: hidden;
}
.hero-badge::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 50%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(0, 85, 255, 0.08), transparent);
  animation: badgeShimmer 4s linear infinite;
}
@keyframes badgeShimmer {
  0% { left: -50%; }
  100% { left: 150%; }
}
@keyframes dotPulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 12px var(--neon-glow); }
  50% { opacity: 0.4; box-shadow: 0 0 4px var(--neon-glow); }
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 5.5vw, 4.5rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--text-strong);
  margin-bottom: 24px;
}
.hero-title em {
  font-style: normal;
  background: linear-gradient(135deg, var(--neon-bright), var(--neon), var(--neon-cyan), var(--neon-bright));
  background-size: 300% 300%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: textGradientFlow 6s linear infinite;
}
@keyframes textGradientFlow {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
.title-line { display: block; }

.hero-subtitle {
  font-size: 1.18rem;
  color: var(--text-secondary);
  max-width: 540px;
  margin: 0 auto 40px;
  line-height: 1.8;
}

.hero-cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ========================================
   BUTTONS — Animated hovers
   ======================================== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 32px;
  border-radius: 100px;
  background: linear-gradient(90deg, var(--neon), var(--neon-bright), var(--neon-cyan), var(--neon));
  color: #fff;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  position: relative;
  overflow: hidden;
  transition: transform 0.35s var(--ease), box-shadow 0.35s, gap 0.3s;
}
.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--neon-bright), var(--neon-cyan));
  opacity: 0;
  transition: opacity 0.4s;
}
/* Continuous shimmer sweep inside button */
.btn-glow .btn-arrow {
  animation: btnArrowBounce 5s ease-in-out infinite;
}
@keyframes btnArrowBounce {
  0%, 100% { transform: translateX(0); }
  50% { transform: translateX(3px); }
}
.btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 32px var(--neon-glow-strong);
  gap: 14px;
}
.btn-primary:hover::before { opacity: 1; }
.btn-primary span, .btn-primary svg { position: relative; z-index: 1; }

.btn-glow {
  box-shadow: 0 4px 20px var(--neon-glow);
  background-size: 300% 100%;
  animation: btnGradientFlow 12s linear infinite, btnPulse 6s ease-in-out infinite;
}
@keyframes btnGradientFlow {
  0% { background-position: 300% 50%; }
  100% { background-position: 0% 50%; }
}
@keyframes btnPulse {
  0%, 100% { box-shadow: 0 4px 20px var(--neon-glow); transform: translateY(0); }
  50% { box-shadow: 0 5px 24px var(--neon-glow-strong); transform: translateY(-1px); }
}

.btn-lg {
  padding: 18px 40px;
  font-size: 1.05rem;
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 32px;
  border-radius: 100px;
  border: 2px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 600;
  transition: color 0.3s, border-color 0.3s, transform 0.35s var(--ease), box-shadow 0.3s, gap 0.3s, background 0.3s;
}
.btn-ghost:hover {
  color: var(--neon);
  border-color: var(--neon);
  transform: translateY(-3px);
  box-shadow: 0 6px 24px var(--neon-subtle);
  background: var(--neon-bg);
  gap: 14px;
}

/* Arrow animation on hover */
.btn-arrow {
  transition: transform 0.3s var(--ease);
}
.btn-primary:hover .btn-arrow,
.btn-ghost:hover .btn-arrow,
.btn-nav:hover .btn-arrow {
  transform: translateX(4px);
}
.btn-arrow-sm {
  display: inline-block;
  vertical-align: middle;
  transition: transform 0.3s var(--ease);
}
.doc-card:hover .btn-arrow-sm {
  transform: translateX(4px);
}

/* ---- Scroll cue ---- */
.scroll-cue {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.scroll-cue span {
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.scroll-line {
  width: 2px;
  height: 48px;
  background: var(--border-color);
  border-radius: 2px;
  position: relative;
  overflow: hidden;
}
.scroll-line::after {
  content: '';
  position: absolute;
  top: -100%;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, var(--neon), var(--neon-cyan));
  animation: scrollAnim 2.2s var(--ease) infinite;
}
@keyframes scrollAnim { 0% { top: -100%; } 100% { top: 100%; } }

/* ========================================
   TYPOGRAPHY
   ======================================== */
.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  background: linear-gradient(90deg, var(--neon), var(--neon-cyan), var(--neon-bright), var(--neon));
  background-size: 300% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: textGradientFlow 5s linear infinite;
  margin-bottom: 20px;
}
.eyebrow svg { -webkit-text-fill-color: initial; color: var(--neon); }

/* Animated floating icons */
.icon-animated {
  width: 20px;
  height: 20px;
  animation: iconBob 3s ease-in-out infinite;
}
@keyframes iconBob {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-3px); }
}

.display-heading {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: var(--text-strong);
  max-width: 720px;
}

.section-heading {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--text-strong);
  margin-bottom: 18px;
}
.cta-block .display-heading {
  background: linear-gradient(135deg, var(--text-strong), var(--neon), var(--neon-cyan), var(--text-strong));
  background-size: 300% 300%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: textGradientFlow 8s linear infinite;
}

.section-intro {
  text-align: center;
  max-width: 580px;
  margin: 0 auto 72px;
}
.section-intro .eyebrow { justify-content: center; }

.section-sub {
  font-size: 1.08rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

.lead-text {
  font-size: 1.15rem;
  color: var(--text-body);
  line-height: 1.8;
}

/* ========================================
   ABOUT SECTION
   ======================================== */
.about-hero { margin-bottom: 56px; }

.about-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  margin-bottom: 72px;
}

.about-col p {
  color: var(--text-body);
  line-height: 1.85;
  margin-bottom: 18px;
  font-size: 1.02rem;
}

/* Animated data stream visual */
.hero-visual {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 48px 44px 32px;
  overflow: hidden;
  backdrop-filter: blur(8px);
  transition: border-color 0.4s, box-shadow 0.4s;
}
.hero-visual:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-glow);
}

.data-stream { display: flex; flex-direction: column; gap: 14px; margin-bottom: 20px; }
.stream-row { display: flex; align-items: center; gap: 16px; }
.stream-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  min-width: 110px;
  font-family: var(--font-display);
}
.stream-bar {
  flex: 1;
  height: 10px;
  background: var(--code-bg);
  border-radius: 6px;
  overflow: hidden;
}
.stream-fill {
  height: 100%;
  border-radius: 6px;
  background: linear-gradient(90deg, var(--neon), var(--neon-cyan));
  opacity: 0;
  transform: scaleX(0);
  transform-origin: left;
}
.stream-fill.animate-once {
  animation: streamFillOnce 2s var(--ease) forwards;
}
.stream-fill-1 { width: 95%; }
.stream-fill-2 { width: 80%; }
.stream-fill-3 { width: 65%; }
.stream-fill-4 { width: 50%; }
.stream-fill-5 { width: 35%; }
.stream-fill-1.animate-once { animation-delay: 0s; }
.stream-fill-2.animate-once { animation-delay: 0.2s; }
.stream-fill-3.animate-once { animation-delay: 0.4s; }
.stream-fill-4.animate-once { animation-delay: 0.6s; }
.stream-fill-5.animate-once { animation-delay: 0.8s; }

@keyframes streamFillOnce {
  0% { opacity: 0; transform: scaleX(0); }
  100% { opacity: 1; transform: scaleX(1); }
}

.vis-caption {
  font-size: 0.84rem;
  color: var(--text-muted);
  text-align: center;
}

/* ========================================
   STATS SECTION
   ======================================== */
.section-stats {
  padding: 80px 0;
  background:
    linear-gradient(135deg, var(--neon-bg), transparent, var(--neon-bg));
  border-top: 1px solid var(--section-border);
  border-bottom: 1px solid var(--section-border);
  position: relative;
  overflow: hidden;
}
.section-stats::before {
  content: '';
  position: absolute;
  inset: -100%;
  width: 300%;
  height: 300%;
  background:
    conic-gradient(from 0deg at 50% 50%,
      transparent 0deg,
      var(--neon-subtle) 90deg,
      transparent 180deg,
      var(--neon-subtle) 270deg,
      transparent 360deg
    );
  animation: gradientDrift 24s linear infinite;
  opacity: 0.5;
  pointer-events: none;
}

.stats-strip {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 56px;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

.stat { text-align: center; }

.stat-number {
  display: block;
  font-family: var(--font-display);
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 8px;
  color: var(--text-strong);
  background: linear-gradient(135deg, var(--neon), var(--neon-cyan), var(--neon-bright), var(--neon));
  background-size: 300% 300%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: statGradient 5s linear infinite, statPulse 3s ease-in-out infinite;
}
@keyframes statGradient {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
@keyframes statPulse {
  0%, 100% { filter: drop-shadow(0 0 4px var(--neon-glow)); transform: scale(1); }
  50% { filter: drop-shadow(0 0 12px var(--neon-glow-strong)); transform: scale(1.03); }
}

.stat-status {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 8px;
  color: #00cc66;
}

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #00cc66;
  box-shadow: 0 0 12px rgba(0, 204, 102, 0.5);
  animation: dotPulse 2s ease-in-out infinite;
}

.stat-label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.stat-divider {
  width: 1px;
  height: 56px;
  background: var(--border-color);
}

/* ========================================
   PLATFORM GRID
   ======================================== */
.platform-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.pcard {
  position: relative;
  padding: 40px 36px;
  border-radius: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(8px);
  transition: border-color 0.4s, transform 0.5s var(--ease), box-shadow 0.4s;
  overflow: hidden;
}

.pcard-glow {
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--neon), var(--neon-cyan), var(--neon-bright), var(--neon));
  background-size: 300% 100%;
  opacity: 0;
  transition: opacity 0.4s;
  animation: glowSweep 3s linear infinite;
}
@keyframes glowSweep {
  0% { background-position: 0% 50%; }
  100% { background-position: 300% 50%; }
}

.pcard:hover {
  border-color: var(--border-hover);
  transform: translateY(-6px);
  box-shadow: var(--shadow-glow);
}
.pcard:hover .pcard-glow { opacity: 1; }

.pcard-wide { grid-column: span 2; }

.pcard-num {
  position: absolute;
  top: 32px;
  right: 32px;
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-muted);
}

.pcard-icon {
  width: 52px;
  height: 52px;
  color: var(--neon);
  margin-bottom: 24px;
  filter: drop-shadow(0 0 8px var(--neon-subtle));
}

/* Floating icon animation */
.icon-float {
  animation: iconFloat 4s ease-in-out infinite;
}
@keyframes iconFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

.pcard h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-strong);
  margin-bottom: 12px;
}

.pcard p {
  font-size: 0.96rem;
  color: var(--text-body);
  line-height: 1.75;
}

/* Dashboard mini */
.pcard-dashboard {
  margin-top: 28px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 440px;
}
.dash-row {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.88rem;
  color: var(--text-body);
  padding: 10px 16px;
  background: var(--code-bg);
  border-radius: 10px;
  border: 1px solid var(--border-color);
}
.dash-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.dash-green { background: #00cc66; box-shadow: 0 0 8px rgba(0,204,102,0.4); }
.dash-blue { background: var(--neon); box-shadow: 0 0 8px var(--neon-glow); }
.dash-amber { background: #f59e0b; box-shadow: 0 0 8px rgba(245,158,11,0.4); }
.dash-val {
  margin-left: auto;
  font-weight: 600;
  color: var(--text-strong);
  font-family: var(--font-display);
  font-size: 0.85rem;
}

/* ========================================
   ARCHITECTURE PIPELINE
   ======================================== */
.arch-pipeline {
  max-width: 660px;
  margin: 0 auto;
}

/* Scroll-driven progress track */
.arch-pipeline { position: relative; }
.arch-progress-track {
  position: absolute;
  left: 11px;
  top: 8px;
  bottom: 8px;
  width: 3px;
  background: var(--border-color);
  border-radius: 3px;
  z-index: 0;
  overflow: hidden;
}
.arch-progress-fill {
  width: 100%;
  height: 0%;
  background: linear-gradient(180deg, var(--neon), var(--neon-cyan), var(--neon-bright));
  border-radius: 3px;
  transition: height 0.8s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 0 10px var(--neon-glow), 0 0 3px var(--neon-cyan);
}

.arch-step { display: flex; gap: 32px; position: relative; z-index: 1; }

.arch-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-shrink: 0;
  width: 24px;
}

.arch-dot {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 3px solid var(--border-color);
  background: var(--bg);
  position: relative;
  z-index: 1;
  flex-shrink: 0;
  transition: background 0.4s, box-shadow 0.4s, transform 0.4s, border-color 0.4s;
}
@keyframes archDotBreath {
  0%, 100% { box-shadow: 0 0 6px var(--neon-glow); }
  50% { box-shadow: 0 0 18px var(--neon-glow-strong); }
}
.arch-step:hover .arch-dot {
  background: var(--neon);
  box-shadow: 0 0 20px var(--neon-glow-strong);
  transform: scale(1.2);
}
.arch-dot-last { background: var(--neon); box-shadow: 0 0 12px var(--neon-glow); }
.arch-dot.reached {
  border-color: var(--neon);
  background: var(--neon);
  box-shadow: 0 0 20px var(--neon-glow-strong);
  transform: scale(1.15);
  animation: archDotBreath 3s ease-in-out infinite;
}

.arch-connector {
  width: 3px;
  flex: 1;
  background: var(--border-color);
  border-radius: 3px;
  position: relative;
  overflow: hidden;
  transition: background 0.4s;
}
.arch-connector.reached {
  background: linear-gradient(180deg, var(--neon), var(--neon-subtle));
}
.arch-connector::after {
  content: '';
  position: absolute;
  top: -100%;
  left: 0;
  width: 100%;
  height: 60%;
  background: linear-gradient(180deg, transparent, var(--neon-cyan), transparent);
  border-radius: 3px;
  opacity: 0;
  transition: opacity 0.3s;
}
.arch-connector.reached::after {
  opacity: 1;
  animation: connectorPulse 4s linear infinite;
}
@keyframes connectorPulse {
  0% { top: -60%; }
  100% { top: 120%; }
}

.arch-body { padding-bottom: 44px; }

.arch-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--neon);
  margin-bottom: 8px;
  animation: archTagGlow 4s ease-in-out infinite;
  text-shadow: 0 0 6px var(--neon-glow);
}
@keyframes archTagGlow {
  0%, 100% { opacity: 0.8; text-shadow: 0 0 4px var(--neon-glow); }
  50% { opacity: 1; text-shadow: 0 0 12px var(--neon-glow-strong); }
}

.arch-body h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-strong);
  margin-bottom: 8px;
}

.arch-body p {
  font-size: 0.95rem;
  color: var(--text-body);
  line-height: 1.75;
}

/* ========================================
   RESEARCH WORKFLOW
   ======================================== */
.split-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.split-left .section-heading { margin-bottom: 16px; }
.split-left .section-sub { margin-bottom: 40px; }

/* Orbital animation — atom style */
.orbital-visual {
  width: 240px;
  height: 240px;
  position: relative;
  margin-top: 20px;
}
.orbital-ring {
  position: absolute;
  border-radius: 50%;
  border: 2px solid var(--neon);
  opacity: 0.5;
  background: conic-gradient(from 0deg, transparent 0deg, var(--neon) 60deg, transparent 120deg);
  -webkit-mask: radial-gradient(farthest-side, transparent calc(100% - 3px), #000 calc(100% - 2px));
  mask: radial-gradient(farthest-side, transparent calc(100% - 3px), #000 calc(100% - 2px));
}
.orbital-ring-1 {
  inset: 0;
  animation: orbitSpin 24s linear infinite;
}
.orbital-ring-2 {
  inset: 35px;
  border-style: dashed;
  animation: orbitSpin 18s linear infinite reverse;
}
.orbital-ring-3 {
  inset: 70px;
  animation: orbitSpin 30s linear infinite;
}
.orbital-core {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  background: radial-gradient(circle, var(--neon-bright) 0%, var(--neon) 60%, transparent 100%);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  box-shadow: 0 0 30px var(--neon-glow-strong), 0 0 60px var(--neon-glow), inset 0 0 8px rgba(255,255,255,0.3);
}
.orbital-core::after {
  content: '';
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--neon-glow) 0%, transparent 70%);
  animation: corePulse 3s ease-in-out infinite;
}
@keyframes corePulse {
  0%, 100% { opacity: 0.4; transform: scale(1); }
  50% { opacity: 0.8; transform: scale(1.3); }
}
.orbital-dot {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--neon-cyan);
  box-shadow: 0 0 16px var(--neon-glow), 0 0 6px var(--neon-cyan), 0 0 30px var(--neon-glow);
}
/* Dot 1: orbits ring 1 (radius 120px, center at 120px) */
.orbital-dot-1 {
  top: -5px;
  left: 115px;
  animation: orbitSpin 24s linear infinite;
  transform-origin: 5px 125px;
}
/* Dot 2: orbits ring 2 (radius 85px, center at 120px from dot's perspective) */
.orbital-dot-2 {
  top: 30px;
  left: 115px;
  animation: orbitSpin 18s linear infinite reverse;
  transform-origin: 5px 90px;
}
/* Dot 3: orbits ring 3 (radius 50px, center at 120px from dot's perspective) */
.orbital-dot-3 {
  top: 65px;
  left: 115px;
  animation: orbitSpin 30s linear infinite;
  transform-origin: 5px 55px;
}
@keyframes orbitSpin { to { transform: rotate(360deg); } }

.workflow-list { display: flex; flex-direction: column; }

.wf-step {
  display: flex;
  align-items: flex-start;
  gap: 24px;
  padding: 24px 0;
  border-bottom: 1px solid var(--border-color);
  transition: border-color 0.3s, transform 0.3s;
  position: relative;
  overflow: hidden;
}
/* Continuous shimmer sweep across each step */
.wf-step::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 60%;
  height: 100%;
  background: linear-gradient(90deg, transparent, var(--neon-subtle), transparent);
  animation: wfSweep 6s ease-in-out infinite;
  opacity: 0.5;
  pointer-events: none;
}
.wf-step:nth-child(2)::before { animation-delay: -1s; }
.wf-step:nth-child(3)::before { animation-delay: -2s; }
.wf-step:nth-child(4)::before { animation-delay: -3s; }
.wf-step:nth-child(5)::before { animation-delay: -4s; }
.wf-step:nth-child(6)::before { animation-delay: -5s; }
@keyframes wfSweep {
  0%, 100% { left: -60%; opacity: 0; }
  50% { left: 100%; opacity: 0.5; }
}
.wf-step::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--neon), var(--neon-cyan), transparent);
  transition: width 0.6s var(--ease);
}
.wf-step:hover::after { width: 100%; }
.wf-step:first-child { border-top: 1px solid var(--border-color); }
.wf-step:hover { border-color: var(--border-hover); transform: translateX(8px); }

.wf-num {
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--neon);
  min-width: 30px;
  padding-top: 2px;
  animation: wfNumPulse 3s ease-in-out infinite;
  text-shadow: 0 0 8px var(--neon-glow);
}
.wf-step:nth-child(2) .wf-num { animation-delay: -0.5s; }
.wf-step:nth-child(3) .wf-num { animation-delay: -1s; }
.wf-step:nth-child(4) .wf-num { animation-delay: -1.5s; }
.wf-step:nth-child(5) .wf-num { animation-delay: -2s; }
.wf-step:nth-child(6) .wf-num { animation-delay: -2.5s; }
@keyframes wfNumPulse {
  0%, 100% { opacity: 0.7; text-shadow: 0 0 6px var(--neon-glow); }
  50% { opacity: 1; text-shadow: 0 0 16px var(--neon-glow-strong); }
}

.wf-step h4 {
  font-family: var(--font-display);
  font-size: 1.06rem;
  font-weight: 700;
  color: var(--text-strong);
  margin-bottom: 4px;
}

.wf-step p {
  font-size: 0.92rem;
  color: var(--text-body);
  line-height: 1.65;
}

/* ========================================
   RESEARCH DOCUMENTS
   ======================================== */
.doc-featured {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 48px;
  align-items: center;
  padding: 52px;
  border-radius: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(8px);
  margin-bottom: 28px;
  transition: border-color 0.4s, box-shadow 0.4s;
  position: relative;
  overflow: hidden;
}
.doc-featured::before {
  content: '';
  position: absolute;
  inset: -100%;
  width: 300%;
  height: 300%;
  background: conic-gradient(from 0deg at 50% 50%, transparent 0deg, var(--neon-subtle) 90deg, transparent 180deg);
  animation: gradientDrift 25s linear infinite;
  opacity: 0.4;
  pointer-events: none;
}
.doc-featured > * { position: relative; z-index: 1; }
.doc-featured:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-glow);
}

.doc-type {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--neon);
  margin-bottom: 14px;
}

.doc-featured-content h3 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-strong);
  margin-bottom: 16px;
}

.doc-featured-content p {
  font-size: 0.98rem;
  color: var(--text-body);
  line-height: 1.8;
  margin-bottom: 24px;
}

.doc-meta {
  display: flex;
  gap: 12px;
  margin-bottom: 28px;
}
.doc-meta span {
  padding: 6px 14px;
  background: var(--code-bg);
  border-radius: 8px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}

.doc-featured-preview { display: flex; justify-content: center; }

.doc-preview-page {
  width: 260px;
  padding: 36px 28px;
  background: var(--bg-alt);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  box-shadow: var(--shadow-card);
  transition: transform 0.5s var(--ease), box-shadow 0.4s;
}
.doc-featured:hover .doc-preview-page {
  transform: translateY(-6px) rotate(-2deg);
  box-shadow: var(--shadow-glow);
}

.doc-page-header {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1rem;
  color: var(--text-strong);
  margin-bottom: 8px;
}
.doc-page-sub { font-size: 0.75rem; color: var(--text-secondary); margin-bottom: 4px; }
.doc-page-sub2 { font-size: 0.68rem; color: var(--text-muted); margin-bottom: 24px; }
.doc-page-lines { display: flex; flex-direction: column; gap: 8px; }
.doc-line { height: 4px; background: var(--border-color); border-radius: 4px; }

/* Document cards */
.doc-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.doc-card {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 36px 32px;
  border-radius: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(8px);
  transition: border-color 0.4s, transform 0.5s var(--ease), box-shadow 0.4s;
}
.doc-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-6px);
  box-shadow: var(--shadow-glow);
}

.doc-card-icon {
  width: 44px;
  height: 44px;
  color: var(--neon);
  filter: drop-shadow(0 0 6px var(--neon-subtle));
}

.doc-card-body h4 {
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--text-strong);
  margin-bottom: 10px;
}

.doc-card-body p {
  font-size: 0.92rem;
  color: var(--text-body);
  line-height: 1.7;
  margin-bottom: 14px;
}

.doc-card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--neon);
  transition: gap 0.3s var(--ease);
}
.doc-card:hover .doc-card-link { gap: 10px; }

/* PDF trigger cards */
.doc-card.pdf-trigger { cursor: pointer; }
button.pdf-trigger { border: none; font-family: inherit; cursor: pointer; }

/* ========================================
   CTA SECTION
   ======================================== */
.section-cta {
  text-align: center;
  background: linear-gradient(180deg, var(--bg-alt), var(--bg));
  border-top: 1px solid var(--section-border);
  overflow: hidden;
  position: relative;
}
.section-cta::before {
  content: '';
  position: absolute;
  inset: -80%;
  width: 260%;
  height: 260%;
  background:
    conic-gradient(from 180deg at 50% 50%,
      transparent 0deg,
      var(--neon) 45deg,
      transparent 90deg,
      var(--neon-cyan) 180deg,
      transparent 225deg,
      var(--neon-bright) 315deg,
      transparent 360deg
    );
  opacity: 0.025;
  filter: blur(40px);
  animation: heroAurora 35s linear infinite;
  pointer-events: none;
}
[data-theme="dark"] .section-cta::before { opacity: 0.05; }
.section-cta > .container { position: relative; z-index: 1; }

.cta-block {
  max-width: 600px;
  margin: 0 auto;
}
.cta-block .lead-text { margin: 24px 0 40px; }

/* ========================================
   FOOTER
   ======================================== */
.footer {
  padding: 52px 0;
  border-top: 1px solid var(--section-border);
  transition: border-color 0.4s;
  position: relative;
  overflow: hidden;
}
.footer::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 0;
  width: 200%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--neon), var(--neon-cyan), transparent, var(--neon-bright), transparent);
  animation: footerShimmer 6s linear infinite;
  opacity: 0.4;
}
@keyframes footerShimmer {
  0% { transform: translateX(-50%); }
  100% { transform: translateX(0%); }
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.12em;
  color: var(--text-strong);
}

.footer-copy {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: 24px;
}
.footer-links a {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.3s;
  text-decoration: underline;
  text-decoration-color: var(--border-color);
  text-underline-offset: 3px;
}
.footer-links a:hover { color: var(--neon); text-decoration-color: var(--neon); }

/* ========================================
   SCROLL REVEAL
   ======================================== */
.reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-d1 { transition-delay: 0.1s; }
.reveal-d2 { transition-delay: 0.2s; }
.reveal-d3 { transition-delay: 0.3s; }

.pcard.reveal.visible,
.doc-card.reveal.visible {
  transition-delay: calc(var(--index, 0) * 0.08s);
}

/* ========================================
   CONTACT PAGE STYLES
   ======================================== */
.page-wrapper {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.page-main {
  flex: 1;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
}

.contact-page-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  max-width: 1140px;
  margin: 0 auto;
}

.contact-info h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--text-strong);
  margin-bottom: 20px;
  line-height: 1.15;
}

.contact-info p {
  font-size: 1.08rem;
  color: var(--text-body);
  line-height: 1.8;
  margin-bottom: 32px;
}

.contact-features {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-feature {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 0.95rem;
  color: var(--text-body);
  font-weight: 500;
}

.contact-feature-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--neon-bg);
  border: 1px solid var(--neon-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--neon);
  flex-shrink: 0;
}
.contact-feature-icon svg {
  width: 20px;
  height: 20px;
}

.contact-form-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: 48px 40px;
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow-card);
}

.form-group {
  margin-bottom: 24px;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-strong);
  margin-bottom: 8px;
  font-family: var(--font-display);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 14px 18px;
  border-radius: 12px;
  border: 2px solid var(--border-color);
  background: var(--bg-alt);
  color: var(--text-strong);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color 0.3s, box-shadow 0.3s;
  outline: none;
}

.form-input:focus,
.form-textarea:focus {
  border-color: var(--neon);
  box-shadow: 0 0 0 4px var(--neon-subtle);
}

.form-textarea {
  resize: vertical;
  min-height: 140px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-submit {
  width: 100%;
  padding: 16px 32px;
  border: none;
  cursor: pointer;
  font-family: var(--font-body);
}
.form-submit:disabled {
  opacity: 0.55;
  pointer-events: none;
  cursor: not-allowed;
  box-shadow: none;
}

.form-success {
  display: none;
  text-align: center;
  padding: 40px 20px;
}
.form-success.show { display: block; }
.form-success h3 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-strong);
  margin-bottom: 12px;
}
.form-success p {
  color: var(--text-secondary);
  font-size: 1rem;
}

/* ========================================
   LOGO FLASH OVERLAY
   ======================================== */
.logo-flash-overlay {
  position: fixed;
  inset: 0;
  z-index: 99999;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.6s var(--ease), visibility 0.6s;
  pointer-events: none;
}
.logo-flash-overlay.active {
  visibility: visible;
  pointer-events: auto;
  opacity: 1;
}
.logo-flash-overlay.show {
  opacity: 1;
}
.logo-flash-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
  transform: scale(0.6);
  opacity: 0;
  transition: transform 0.8s var(--ease-bounce), opacity 0.6s;
}
.logo-flash-overlay.show .logo-flash-inner {
  transform: scale(1);
  opacity: 1;
}
.logo-flash-img {
  width: 300px;
  height: 300px;
  object-fit: contain;
  filter: var(--logo-filter);
  animation: logoFlashPulse 1.5s ease-in-out infinite;
  drop-shadow: 0 0 60px var(--neon-glow-strong);
}
@keyframes logoFlashPulse {
  0%, 100% { filter: var(--logo-filter) drop-shadow(0 0 30px var(--neon-glow)); }
  50% { filter: var(--logo-filter) drop-shadow(0 0 60px var(--neon-glow-strong)); }
}
.logo-flash-text {
  font-family: var(--font-display);
  font-size: 5rem;
  font-weight: 800;
  letter-spacing: 0.3em;
  text-indent: 0.3em;
  text-align: center;
  background: linear-gradient(135deg, var(--neon-bright), var(--neon), var(--neon-cyan), var(--neon-bright));
  background-size: 300% 300%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: textGradientFlow 3s linear infinite;
}

/* ========================================
   CTA BUTTON GLOW RING
   ======================================== */
.btn-primary.btn-glow {
  position: relative;
}
.btn-primary.btn-glow::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 100px;
  background: linear-gradient(90deg, var(--neon), var(--neon-cyan), var(--neon-bright), var(--neon));
  background-size: 300% 100%;
  z-index: -1;
  animation: ctaGlowRing 6s linear infinite, ctaGlowPulse 5s ease-in-out infinite;
  opacity: 0.7;
  filter: blur(8px);
  transition: opacity 0.3s, filter 0.3s;
}
@keyframes ctaGlowPulse {
  0%, 100% { inset: -4px; opacity: 0.7; }
  50% { inset: -8px; opacity: 1; }
}
.btn-primary.btn-glow:hover::after {
  opacity: 1;
  filter: blur(12px);
}
@keyframes ctaGlowRing {
  0% { background-position: 300% 50%; }
  100% { background-position: 0% 50%; }
}

/* Nav Enquire button glow ring */
.btn-nav {
  position: relative;
}
.btn-nav::after {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: 100px;
  background: linear-gradient(90deg, var(--neon), var(--neon-cyan), var(--neon-bright), var(--neon));
  background-size: 300% 100%;
  z-index: -1;
  animation: ctaGlowRing 6s linear infinite;
  opacity: 0.4;
  filter: blur(4px);
  transition: opacity 0.3s;
}
.btn-nav:hover::after {
  opacity: 0.8;
  filter: blur(8px);
}

/* ========================================
   SECTION ANIMATED PATTERNS
   ======================================== */
.section-pattern {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}
/* Grid dot pattern */
.pattern-dots {
  background-image: radial-gradient(circle, var(--neon) 0.6px, transparent 0.6px);
  background-size: 32px 32px;
  opacity: 0.04;
  animation: patternDrift 40s linear infinite;
}
[data-theme="dark"] .pattern-dots { opacity: 0.06; }
@keyframes patternDrift {
  0% { background-position: 0 0; }
  100% { background-position: 32px 32px; }
}

/* Diagonal lines pattern */
.pattern-lines {
  background: repeating-linear-gradient(
    -45deg,
    transparent,
    transparent 24px,
    var(--neon) 24px,
    var(--neon) 24.5px
  );
  opacity: 0.02;
  animation: patternSlide 20s linear infinite;
}
[data-theme="dark"] .pattern-lines { opacity: 0.035; }
@keyframes patternSlide {
  0% { transform: translate(0, 0); }
  100% { transform: translate(34px, 34px); }
}

/* Blueprint dot-grid pattern — clean lab/research aesthetic */
.pattern-hex {
  background-image:
    radial-gradient(circle, var(--neon) 0.8px, transparent 0.8px),
    linear-gradient(var(--neon) 0.3px, transparent 0.3px),
    linear-gradient(90deg, var(--neon) 0.3px, transparent 0.3px);
  background-size: 40px 40px, 40px 40px, 40px 40px;
  background-position: 0 0, 0 0, 0 0;
  opacity: 0.02;
  animation: patternDrift 80s linear infinite;
}
[data-theme="dark"] .pattern-hex { opacity: 0.035; }

/* Cross-hatch / graph paper pattern */
.pattern-graph {
  background-image:
    linear-gradient(var(--neon) 0.5px, transparent 0.5px),
    linear-gradient(90deg, var(--neon) 0.5px, transparent 0.5px);
  background-size: 48px 48px;
  opacity: 0.025;
  animation: patternDrift 50s linear infinite reverse;
}
[data-theme="dark"] .pattern-graph { opacity: 0.04; }

/* ========================================
   PDF MODAL VIEWER
   ======================================== */
.pdf-modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s var(--ease), visibility 0.4s;
}
.pdf-modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.pdf-modal {
  width: 90vw;
  max-width: 1000px;
  height: 85vh;
  background: var(--bg-alt);
  border-radius: 20px;
  border: 1px solid var(--border-color);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.4);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform: translateY(24px) scale(0.96);
  transition: transform 0.4s var(--ease);
}
.pdf-modal-overlay.active .pdf-modal {
  transform: translateY(0) scale(1);
}

.pdf-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-card);
}

.pdf-modal-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-strong);
}

.pdf-modal-close {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  background: var(--code-bg);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  transition: background 0.3s, color 0.3s, transform 0.3s;
}
.pdf-modal-close:hover {
  background: var(--neon);
  color: #fff;
  transform: rotate(90deg);
}

.pdf-modal-body {
  flex: 1;
  overflow: hidden;
}
.pdf-modal-body iframe {
  width: 100%;
  height: 100%;
  border: none;
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 1024px) {
  .doc-grid { grid-template-columns: 1fr; }
  .doc-featured { grid-template-columns: 1fr; }
  .doc-featured-preview { display: none; }
}

@media (max-width: 768px) {
  .container { padding: 0 24px; }
  .nav-container { padding: 0 24px; }
  .section { padding: 90px 0; }

  .nav-menu {
    position: fixed;
    inset: 0;
    background: var(--bg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 28px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s, visibility 0.4s;
    z-index: 1000;
  }
  .nav-menu.open { opacity: 1; visibility: visible; }
  .nav-menu .nav-link { font-size: 1.5rem; font-family: var(--font-display); font-weight: 600; }
  .nav-toggle { display: flex; }
  .btn-nav { display: none; }

  .about-columns { grid-template-columns: 1fr; gap: 24px; }
  .split-section { grid-template-columns: 1fr; gap: 48px; }
  .platform-grid { grid-template-columns: 1fr; }
  .pcard-wide { grid-column: span 1; }
  .stats-strip { flex-direction: column; gap: 36px; }
  .stat-divider { width: 48px; height: 1px; }
  .footer-inner { flex-direction: column; text-align: center; }
  .orbital-visual { display: none; }
  .hero-orb { opacity: 0.1 !important; }
  .hero-planet { width: 32vmin; height: 32vmin; left: 50%; transform: translate(-50%, -50%); opacity: 0.4; }
  .hero { justify-content: center; }
  .hero-content { margin-left: auto; margin-right: auto; }
  .section-bg-anim { display: none; }
  .section-bg-image img { opacity: 0.06; }
  .section-pattern { opacity: 0.02 !important; }
  .logo-flash-img { width: 200px; height: 200px; }
  .logo-flash-text { font-size: 3rem; }
  .pdf-modal { width: 100vw; height: 100vh; border-radius: 0; max-width: none; }
  .pdf-modal-header { padding: 14px 16px; }
  .pdf-modal-title { font-size: 0.875rem; }
  .pdf-modal-close { width: 44px; height: 44px; font-size: 1.4rem; }

  .contact-page-grid { grid-template-columns: 1fr; gap: 40px; }
  .contact-form-card { padding: 32px 24px; }
  .form-row { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .hero-title { font-size: clamp(2rem, 9vw, 2.8rem); }
  .hero-cta { flex-direction: column; align-items: center; }
  .doc-featured { padding: 32px 24px; }
}

/* ========================================
   REDUCED MOTION
   ======================================== */
@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;
  }
  .reveal { opacity: 1 !important; transform: none !important; }
  .preloader { display: none !important; }
  .hero-planet video { display: none; }
  .stream-fill { animation: none !important; width: 100% !important; }
  .orbital-ring, .orbital-dot { animation: none !important; }
  .icon-float { animation: none !important; }
  .bg-orb { animation: none !important; }
  .hero-orb { animation: none !important; }
  .scroll-line { animation: none !important; }
}

/* ========================================
   FOCUS VISIBLE (Keyboard Accessibility)
   ======================================== */
.btn-primary:focus-visible,
.btn-ghost:focus-visible,
.btn-nav:focus-visible,
.btn-lg:focus-visible,
.theme-toggle:focus-visible,
.nav-toggle:focus-visible,
.nav-link:focus-visible,
.doc-card:focus-visible,
.pdf-trigger:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 3px;
  border-radius: 8px;
}
.pdf-modal-close:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 2px;
}

/* ========================================
   PRINT STYLESHEET
   ======================================== */
@media print {
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
  body {
    background: #fff !important;
    color: #000 !important;
    font-size: 12pt;
    line-height: 1.5;
  }
  .preloader,
  .header,
  .hero-planet,
  .hero-gradient,
  .hero-orb,
  .scroll-cue,
  .section-bg-anim,
  .section-pattern,
  .bg-orb,
  .orbital-visual,
  .logo-flash-overlay,
  .pdf-modal-overlay,
  #networkCanvas,
  .nav-toggle,
  .theme-toggle,
  .btn-nav,
  .section-cta,
  .footer {
    display: none !important;
  }
  .section,
  .section-alt {
    background: transparent !important;
    padding: 24pt 0 !important;
    page-break-inside: avoid;
  }
  .section-bg-image {
    display: none !important;
  }
  .hero {
    min-height: auto !important;
    height: auto !important;
    padding: 24pt 0 !important;
    background: transparent !important;
  }
  .hero-content {
    position: relative !important;
    transform: none !important;
  }
  a {
    color: #000 !important;
    text-decoration: underline;
  }
  .btn-primary, .btn-ghost {
    border: 1px solid #000 !important;
    background: transparent !important;
    color: #000 !important;
    box-shadow: none !important;
  }
  img {
    max-width: 100% !important;
  }
  .container {
    max-width: 100% !important;
    padding: 0 !important;
  }
}