/* ===================================
   CSS Variables & Reset
   =================================== */

:root {
  /* Core Brand Colors */
  --color-primary: #E10600;
  --color-primary-dark: #B30600;
  --color-bg: #0B0B0B;
  --color-surface: #111215;
  --color-surface-elevated: #1a1a1a;
  --color-text: #FFFFFF;
  --color-text-muted: #C8C8C8;

  /* Neon Palette (HyperTech) */
  --color-cyber-cyan: #31E6FF;
  --color-plasma-violet: #8B5CF6;
  --color-ion-lime: #A3E635;
  --color-accent-cyan: #31E6FF;
  --color-grid: #222;
  --color-success: #16a34a;
  --color-warning: #f59e0b;

  /* Gradients */
  --gradient-neon: linear-gradient(90deg, #E10600, #31E6FF, #8B5CF6);
  --gradient-neon-vertical: linear-gradient(180deg, #E10600, #31E6FF, #8B5CF6);
  --gradient-hero: radial-gradient(1200px 800px at 50% 10%, #1a1c22 0%, #0B0B0B 50%, #050508 100%);
  --gradient-surface: linear-gradient(135deg, #111215 0%, #0B0B0B 100%);

  /* Glow Effects */
  --glow-primary: 0 0 20px rgba(225, 6, 0, 0.5), 0 0 40px rgba(225, 6, 0, 0.3);
  --glow-cyan: 0 0 20px rgba(49, 230, 255, 0.5), 0 0 40px rgba(49, 230, 255, 0.3);
  --glow-violet: 0 0 20px rgba(139, 92, 246, 0.5), 0 0 40px rgba(139, 92, 246, 0.3);
  --glow-lime: 0 0 20px rgba(163, 230, 53, 0.5), 0 0 40px rgba(163, 230, 53, 0.3);

  /* Typography */
  --font-primary: 'Inter', ui-sans-serif, system-ui, sans-serif;
  --font-heading: 'Orbitron', 'Inter', sans-serif;
  --font-mono: ui-monospace, 'SF Mono', Consolas, monospace;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;

  /* Layout */
  --container-max: 1280px;
  --header-height: 70px;

  /* Effects */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px rgba(225, 6, 0, 0.4);
  --shadow-neon: 0 0 10px rgba(49, 230, 255, 0.6), 0 0 20px rgba(49, 230, 255, 0.4), 0 0 30px rgba(49, 230, 255, 0.2);

  /* Transitions */
  --transition-fast: 180ms cubic-bezier(0.2, 0.8, 0.2, 1);
  --transition-base: 300ms cubic-bezier(0.2, 0.8, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.2, 0.8, 0.2, 1);

  /* Animation durations */
  --duration-intro: 700ms;
  --duration-reveal: 500ms;
  --duration-pulse: 2500ms;
}

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

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

body {
  font-family: var(--font-primary);
  font-weight: 400;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  border: none;
  background: none;
  cursor: pointer;
}

ul {
  list-style: none;
}

/* ===================================
   Accessibility
   =================================== */

.skip-link {
  position: absolute;
  top: -100px;
  left: 0;
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-primary);
  color: var(--color-text);
  font-weight: 600;
  z-index: 10000;
}

.skip-link:focus {
  top: 0;
  outline: 3px solid var(--color-accent-cyan);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}

/* Focus visible */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 4px;
}

/* ===================================
   Layout & Container
   =================================== */

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--spacing-lg);
  }
}

/* ===================================
   Header
   =================================== */

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 11, 11, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding: 12px 32px;
  height: 56px;
}

.site-header__left {
  display: flex;
  align-items: center;
}

.site-header__right {
  display: flex;
  align-items: center;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: #fff;
  transition: opacity 0.3s ease;
}

.brand:hover {
  opacity: 0.85;
}

.brand__symbol {
  width: 28px;
  height: 28px;
  filter: drop-shadow(0 0 8px rgba(49, 230, 255, 0.4));
}

.brand__word {
  font-family: Orbitron, Inter, system-ui;
  letter-spacing: 0.5px;
  font-weight: 700;
  font-size: 1.15rem;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Navigation */
.nav__list {
  display: flex;
  gap: var(--spacing-sm);
  font-size: 0.85rem;
}

@media (min-width: 768px) {
  .nav__list {
    gap: var(--spacing-md);
    font-size: 0.9rem;
  }
}

@media (max-width: 768px) {
  .site-header {
    padding: 10px 16px;
    height: 52px;
  }

  .brand__symbol {
    width: 24px;
    height: 24px;
  }

  .brand__word {
    font-size: 1rem;
  }

  .nav__list {
    display: none;
  }

  .site-header__right {
    gap: 12px;
  }
}

.nav__link {
  position: relative;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: color var(--transition-fast);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--color-primary);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--transition-fast);
}

.nav__link:hover {
  color: var(--color-primary);
}

.nav__link:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.lang-toggle {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--color-text);
  cursor: pointer;
}

.lang-toggle .muted {
  color: var(--color-text-muted);
}

/* ===================================
   Hero Section
   =================================== */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  overflow: hidden;
  background: linear-gradient(135deg, #0B0B0B 0%, #1a0a0a 100%);
}

.hero__orb-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: auto;
}

.hero__orb-container canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.hero__container {
  position: relative;
  z-index: 1;
  text-align: left;
  padding: var(--spacing-3xl) 0;
  padding-left: clamp(2rem, 8vw, 8rem);
  max-width: 60%;
  margin: 0 !important;
  margin-left: 0 !important;
  pointer-events: none;
}

.hero__content > * {
  pointer-events: auto;
}

.hero__symbol-wrapper {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 2;
  width: 120px;
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.hero__symbol-overlay {
  width: 100%;
  height: 100%;
  filter: drop-shadow(0 0 20px rgba(216, 107, 255, 0.8))
          drop-shadow(0 0 40px rgba(92, 246, 255, 0.5));
  animation: logo-ethereal 4s ease-in-out infinite;
}

@keyframes logo-ethereal {
  0%, 100% {
    transform: scale(1) translateY(0);
    filter: drop-shadow(0 0 20px rgba(216, 107, 255, 0.8))
            drop-shadow(0 0 40px rgba(92, 246, 255, 0.5));
  }
  50% {
    transform: scale(1.08) translateY(-8px);
    filter: drop-shadow(0 0 30px rgba(216, 107, 255, 1))
            drop-shadow(0 0 60px rgba(92, 246, 255, 0.8));
  }
}

.hero__headline {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-md);
  animation: fade-up var(--duration-intro) var(--transition-base);
}

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.highlight {
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtext {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--color-text-muted);
  max-width: 700px;
  margin: 0 0 var(--spacing-xl) 0;
  animation: fade-up var(--duration-intro) 200ms var(--transition-base) backwards;
}

.hero__actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: flex-start;
  flex-wrap: wrap;
  animation: fade-up var(--duration-intro) 400ms var(--transition-base) backwards;
}

/* ===================================
   Buttons
   =================================== */

.btn {
  display: inline-flex;
  align-items: center;
  padding: 0.875rem 1.75rem;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-radius: 6px;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-text);
  box-shadow: var(--shadow-glow);
}

.btn--primary:hover {
  background: var(--color-primary-dark);
  box-shadow: 0 0 30px rgba(225, 6, 0, 0.6);
  transform: translateY(-2px);
}

.btn--secondary {
  background: transparent;
  color: var(--color-text);
  border: 2px solid var(--color-primary);
}

.btn--secondary:hover {
  background: rgba(225, 6, 0, 0.1);
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

/* ===================================
   Sections
   =================================== */

.section {
  padding: var(--spacing-3xl) 0;
  position: relative;
}

.section__title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: 0.05em;
  text-align: center;
  margin-bottom: var(--spacing-2xl);
  background: linear-gradient(135deg, var(--color-text), var(--color-text-muted));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Section reveal animation (triggered by JS) */
.section[data-revealed="true"] {
  animation: section-reveal var(--duration-reveal) var(--transition-base);
}

@keyframes section-reveal {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===================================
   Overview Section
   =================================== */

.overview__grid {
  display: grid;
  gap: var(--spacing-xl);
}

@media (min-width: 1024px) {
  .overview__grid {
    grid-template-columns: 1fr 1fr;
  }
}

.feature-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.feature-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--color-surface);
  border-radius: 8px;
  border-left: 3px solid var(--color-primary);
  transition: all var(--transition-fast);
}

.feature-item:hover {
  background: var(--color-surface-elevated);
  transform: translateX(4px);
}

.feature-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

/* KPI Cards */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--spacing-md);
}

.kpi-card {
  background: var(--color-surface);
  padding: var(--spacing-lg);
  border-radius: 12px;
  text-align: center;
  border: 1px solid rgba(225, 6, 0, 0.2);
  transition: all var(--transition-fast);
}

.kpi-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow);
  transform: translateY(-4px);
}

.kpi-card__value {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
}

.kpi-card__unit {
  font-size: 1.25rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-xs);
}

.kpi-card__label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ===================================
   Architecture Section
   =================================== */

.section--architecture {
  background: var(--color-surface);
}

.architecture__diagram {
  margin-bottom: var(--spacing-xl);
  padding: var(--spacing-lg);
  background: var(--color-bg);
  border-radius: 12px;
  overflow-x: auto;
}

.mermaid {
  display: flex;
  justify-content: center;
}

.architecture__legend-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  text-align: center;
}

.engine-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
}

.engine-tag {
  padding: var(--spacing-md);
  background: var(--color-surface-elevated);
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.engine-tag__name {
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.engine-tag__desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* ===================================
   Products Section
   =================================== */

.products__grid {
  display: grid;
  gap: var(--spacing-lg);
}

@media (min-width: 768px) {
  .products__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .products__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.product-card {
  background: var(--color-surface);
  padding: var(--spacing-lg);
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all var(--transition-base);
  animation: card-float 2.6s ease-in-out infinite;
  animation-play-state: paused;
}

.product-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
  animation-play-state: running;
}

@keyframes card-float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-6px);
  }
}

.product-card__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-md);
}

.product-card__name {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: var(--color-primary);
}

.product-card__badge {
  font-size: 0.7rem;
  padding: 0.25rem 0.5rem;
  background: rgba(225, 6, 0, 0.2);
  border: 1px solid var(--color-primary);
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.product-card__desc {
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-md);
  line-height: 1.6;
}

.product-card__benefits {
  margin-top: var(--spacing-md);
}

.product-card__benefits-title {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-accent-cyan);
  margin-bottom: var(--spacing-xs);
}

.product-card__list {
  list-style: disc;
  padding-left: var(--spacing-md);
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.product-card__list li {
  margin-bottom: 0.25rem;
}

.product-card__footer {
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.product-card__link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-accent-cyan);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.875rem;
  transition: all 0.3s ease;
}

.product-card__link:hover {
  color: var(--color-text);
  transform: translateX(4px);
}

.product-card__link:focus-visible {
  outline: 2px solid var(--color-accent-cyan);
  outline-offset: 4px;
}

/* ===================================
   Benefits Section
   =================================== */

.benefits__grid {
  display: grid;
  gap: var(--spacing-xl);
}

@media (min-width: 768px) {
  .benefits__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.benefits__col {
  padding: var(--spacing-xl);
  background: var(--color-surface);
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.benefits__heading {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--color-primary);
}

.benefits__list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.benefits__list li {
  position: relative;
  padding-left: var(--spacing-lg);
  color: var(--color-text-muted);
}

.benefits__list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 700;
}

/* ===================================
   Demo Section (Router Simulator)
   =================================== */

.section--demo {
  background: var(--color-surface);
}

.demo__intro {
  text-align: center;
  margin-bottom: var(--spacing-xl);
  color: var(--color-text-muted);
}

.router-simulator {
  background: var(--color-bg);
  border-radius: 12px;
  padding: var(--spacing-xl);
  border: 1px solid rgba(225, 6, 0, 0.2);
}

.router-controls {
  display: grid;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

@media (min-width: 768px) {
  .router-controls {
    grid-template-columns: repeat(2, 1fr);
  }
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.control-label {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  cursor: pointer;
}

.control-text {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

.control-toggle,
.control-select,
.control-range {
  cursor: pointer;
}

.control-toggle {
  width: 20px;
  height: 20px;
  accent-color: var(--color-primary);
}

.control-select {
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 6px;
  font-size: 0.9rem;
}

.control-range {
  width: 100%;
  accent-color: var(--color-primary);
}

.router-output {
  display: grid;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background: var(--color-surface);
  border-radius: 8px;
}

@media (min-width: 768px) {
  .router-output {
    grid-template-columns: repeat(3, 1fr);
  }
}

.router-result {
  text-align: center;
}

.router-result__title {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-xs);
}

.router-result__value {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-primary);
}

/* ===================================
   Compliance Section
   =================================== */

.compliance__grid {
  display: grid;
  gap: var(--spacing-md);
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.compliance-card {
  padding: var(--spacing-lg);
  background: var(--color-surface);
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  transition: all var(--transition-fast);
}

.compliance-card:hover {
  border-color: var(--color-success);
  box-shadow: 0 0 20px rgba(22, 163, 74, 0.3);
  transform: translateY(-4px);
}

.compliance-card__title {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
  color: var(--color-success);
}

.compliance-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* ===================================
   FAQ Section
   =================================== */

.faq__list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.faq-item {
  background: var(--color-surface);
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all var(--transition-fast);
}

.faq-item:hover {
  border-color: var(--color-primary);
}

.faq-item[open] {
  border-color: var(--color-primary);
}

.faq-item__question {
  padding: var(--spacing-md) var(--spacing-lg);
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  position: relative;
  user-select: none;
}

.faq-item__question::after {
  content: '+';
  position: absolute;
  right: var(--spacing-lg);
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.5rem;
  color: var(--color-primary);
  transition: transform var(--transition-fast);
}

.faq-item[open] .faq-item__question::after {
  transform: translateY(-50%) rotate(45deg);
}

.faq-item__answer {
  padding: 0 var(--spacing-lg) var(--spacing-md);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ===================================
   Footer
   =================================== */

.footer {
  position: relative;
  background: var(--color-surface);
  padding: var(--spacing-xl) 0;
  margin-top: var(--spacing-3xl);
}

.footer__divider--neon {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg,
    transparent 0%,
    var(--color-primary) 20%,
    var(--color-accent-cyan) 50%,
    var(--color-primary) 80%,
    transparent 100%
  );
  box-shadow:
    0 0 10px rgba(225, 6, 0, 0.5),
    0 0 20px rgba(49, 230, 255, 0.3);
  animation: neon-pulse 3s ease-in-out infinite;
}

@keyframes neon-pulse {
  0%, 100% {
    opacity: 0.7;
    box-shadow:
      0 0 10px rgba(225, 6, 0, 0.5),
      0 0 20px rgba(49, 230, 255, 0.3);
  }
  50% {
    opacity: 1;
    box-shadow:
      0 0 15px rgba(225, 6, 0, 0.7),
      0 0 30px rgba(49, 230, 255, 0.5);
  }
}

.footer__container {
  display: grid;
  gap: var(--spacing-lg);
  text-align: center;
}

@media (min-width: 768px) {
  .footer__container {
    grid-template-columns: repeat(3, 1fr);
    text-align: left;
  }
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  justify-content: center;
}

@media (min-width: 768px) {
  .footer__brand {
    justify-content: flex-start;
  }
}

.footer__wordmark {
  font-family: var(--font-heading);
  font-weight: 800;
  letter-spacing: 0.1em;
}

.footer__legal {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.footer__tagline {
  margin-top: var(--spacing-xs);
  font-size: 0.75rem;
}

.footer__powered-by {
  margin-top: var(--spacing-xs);
  font-size: 0.7rem;
  color: var(--color-text-muted);
  opacity: 0.7;
  font-style: italic;
}

.footer__links {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  align-items: center;
}

@media (min-width: 768px) {
  .footer__links {
    justify-content: flex-end;
  }
}

.footer__link {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--color-primary);
}

.footer__disclaimer {
  margin-bottom: var(--spacing-xl);
}

.disclaimer-box {
  background: rgba(225, 6, 0, 0.05);
  border: 1px solid rgba(225, 6, 0, 0.2);
  border-radius: 8px;
  padding: var(--spacing-lg);
  max-width: 1000px;
  margin: 0 auto;
}

.disclaimer-box__title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
  font-family: var(--font-heading);
  letter-spacing: 0.05em;
}

.disclaimer-box__text {
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-sm);
}

.disclaimer-box__text:last-child {
  margin-bottom: 0;
}

.disclaimer-box__text strong {
  color: var(--color-text);
  font-weight: 600;
}

/* ===================================
   Tertiary Button
   =================================== */

.btn--tertiary {
  background: transparent;
  color: var(--color-accent-cyan);
  border: 2px solid var(--color-accent-cyan);
}

.btn--tertiary:hover {
  background: rgba(49, 230, 255, 0.1);
  box-shadow: 0 0 20px rgba(49, 230, 255, 0.3);
  transform: translateY(-2px);
}

/* ===================================
   Section Subtitle
   =================================== */

.section__subtitle {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 1.125rem;
  margin: calc(var(--spacing-md) * -1) auto var(--spacing-xl);
  max-width: 700px;
}

/* ===================================
   Interactive Diagrams Section
   =================================== */

.section--interactive {
  background: var(--color-bg);
}

.diagram-block {
  margin-bottom: var(--spacing-2xl);
  padding: var(--spacing-xl);
  background: var(--color-surface);
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.diagram-block__title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--color-primary);
}

.diagram-block__legend {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  font-style: italic;
  margin-bottom: var(--spacing-md);
}

.diagram-block__content {
  background: var(--color-bg);
  padding: var(--spacing-lg);
  border-radius: 8px;
  overflow-x: auto;
}

/* Fraud Graph Canvas */
.fraud-graph-canvas {
  width: 100%;
  height: 400px;
  background: var(--color-bg);
  border-radius: 8px;
  cursor: grab;
}

.fraud-graph-canvas:active {
  cursor: grabbing;
}

.graph-controls {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
  flex-wrap: wrap;
}

.graph-filter-btn,
.graph-export-btn {
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: 6px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: var(--color-surface-elevated);
  color: var(--color-text-muted);
  transition: all var(--transition-fast);
}

.graph-filter-btn.active {
  background: var(--color-primary);
  color: var(--color-text);
  border-color: var(--color-primary);
}

.graph-filter-btn:hover,
.graph-export-btn:hover {
  border-color: var(--color-primary);
  background: var(--color-surface);
}

.graph-node-details {
  margin-top: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--color-surface-elevated);
  border-radius: 6px;
  min-height: 60px;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* ===================================
   Live Demo Section
   =================================== */

.section--live-demo {
  background: var(--color-surface);
}

/* Mode Toggle */
.demo-mode-toggle {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  margin-bottom: var(--spacing-xl);
}

.mode-toggle-label {
  cursor: pointer;
}

.mode-toggle-label input[type="radio"] {
  position: absolute;
  opacity: 0;
}

.mode-toggle-btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.05em;
  border-radius: 6px;
  border: 2px solid var(--color-primary);
  background: transparent;
  color: var(--color-text-muted);
  transition: all var(--transition-fast);
}

.mode-toggle-label input[type="radio"]:checked + .mode-toggle-btn {
  background: var(--color-primary);
  color: var(--color-text);
  box-shadow: var(--shadow-glow);
}

.mode-toggle-btn:hover {
  border-color: var(--color-primary-dark);
}

/* Compliance Notice */
.compliance-notice {
  background: rgba(22, 163, 74, 0.1);
  border-left: 4px solid var(--color-success);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
  border-radius: 4px;
}

.compliance-notice p {
  margin: var(--spacing-xs) 0;
  font-size: 0.9rem;
  color: var(--color-text);
}

/* Demo Tabs */
.demo-tabs {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
  overflow-x: auto;
  padding-bottom: var(--spacing-sm);
}

.demo-tab {
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 0.9rem;
  font-weight: 600;
  background: var(--color-bg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 6px;
  color: var(--color-text-muted);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.demo-tab:hover {
  border-color: var(--color-primary);
  color: var(--color-text);
}

.demo-tab.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-text);
}

/* Demo Panel */
.demo-panel {
  display: grid;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

@media (min-width: 1024px) {
  .demo-panel {
    grid-template-columns: 1fr 1fr;
  }
}

.demo-panel__input,
.demo-panel__output {
  background: var(--color-bg);
  padding: var(--spacing-lg);
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.demo-panel__input h3,
.demo-panel__output h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
}

.demo-panel__hint {
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--color-text-muted);
}

.demo-textarea {
  width: 100%;
  padding: var(--spacing-md);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 6px;
  resize: vertical;
  min-height: 200px;
}

.demo-textarea:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.demo-panel__controls {
  display: grid;
  gap: var(--spacing-md);
  margin: var(--spacing-md) 0;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
}

.demo-control-label {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.demo-control-select {
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 6px;
  font-size: 0.9rem;
}

.demo-run-btn {
  width: 100%;
  margin-top: var(--spacing-md);
}

.demo-output {
  width: 100%;
  padding: var(--spacing-md);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 6px;
  max-height: 400px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
}

.demo-download-btn {
  width: 100%;
  margin-top: var(--spacing-md);
}

/* ===================================
   Telemetry Panel
   =================================== */

.telemetry-panel {
  background: var(--color-bg);
  padding: var(--spacing-xl);
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.telemetry-panel__title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--color-accent-cyan);
}

.telemetry-grid {
  display: grid;
  gap: var(--spacing-md);
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  margin-bottom: var(--spacing-lg);
}

.telemetry-metric {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  padding: var(--spacing-md);
  background: var(--color-surface);
  border-radius: 8px;
  text-align: center;
}

.telemetry-metric__label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
}

.telemetry-metric__value {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-primary);
}

.telemetry-sparkline {
  width: 100%;
  height: 80px;
  background: var(--color-surface);
  border-radius: 8px;
}

/* ===================================
   HyperTech Enhancements
   =================================== */

/* Neon Cursor Trail */
#cursor-trail {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.7;
}

@media (pointer: coarse) {
  #cursor-trail {
    display: none;
  }
}

/* Tilt Cards */
.tilt-card {
  transform-style: preserve-3d;
  transition: transform var(--transition-base);
  will-change: transform;
}

.tilt-card:hover {
  transform: perspective(1000px) rotateX(var(--tilt-x, 0deg)) rotateY(var(--tilt-y, 0deg)) scale(1.02);
}

.tilt-card-inner {
  transform: translateZ(20px);
}

/* Gradient Borders */
.gradient-border {
  position: relative;
  border-radius: 12px;
  background: var(--color-surface);
}

.gradient-border::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 12px;
  padding: 2px;
  background: var(--gradient-neon);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0.6;
  transition: opacity var(--transition-fast);
}

.gradient-border:hover::before {
  opacity: 1;
}

/* Neon Glow Text */
.neon-text {
  text-shadow: var(--glow-cyan);
  animation: neon-pulse 3s ease-in-out infinite;
}

@keyframes neon-pulse {
  0%, 100% {
    text-shadow: var(--glow-cyan);
  }
  50% {
    text-shadow:
      0 0 10px rgba(49, 230, 255, 0.8),
      0 0 20px rgba(49, 230, 255, 0.6),
      0 0 30px rgba(49, 230, 255, 0.4),
      0 0 40px rgba(49, 230, 255, 0.2);
  }
}

/* Scan Lines (Cyber Aesthetic) */
.scan-lines {
  position: relative;
  overflow: hidden;
}

.scan-lines::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: repeating-linear-gradient(
    0deg,
    rgba(0, 0, 0, 0.1) 0px,
    transparent 1px,
    transparent 2px,
    rgba(0, 0, 0, 0.1) 3px
  );
  pointer-events: none;
  opacity: 0.3;
}

/* Enhanced Product Cards with 3D */
.product-card {
  position: relative;
  transform-style: preserve-3d;
  transition: all var(--transition-base);
}

.product-card::after {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: 12px;
  background: var(--gradient-neon);
  opacity: 0;
  z-index: -1;
  transition: opacity var(--transition-fast);
}

.product-card:hover::after {
  opacity: 0.3;
}

.product-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--glow-cyan);
}

/* Engine Badge Glows */
.engine-badge {
  padding: 0.25rem 0.75rem;
  border-radius: 16px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: all var(--transition-fast);
}

.engine-badge--structured {
  background: rgba(94, 234, 212, 0.1);
  color: #5eead4;
  border: 1px solid #5eead4;
}

.engine-badge--structured:hover {
  box-shadow: 0 0 15px rgba(94, 234, 212, 0.5);
}

.engine-badge--reasoning {
  background: rgba(245, 158, 11, 0.1);
  color: #f59e0b;
  border: 1px solid #f59e0b;
}

.engine-badge--reasoning:hover {
  box-shadow: 0 0 15px rgba(245, 158, 11, 0.5);
}

.engine-badge--vision {
  background: rgba(96, 165, 250, 0.1);
  color: #60a5fa;
  border: 1px solid #60a5fa;
}

.engine-badge--vision:hover {
  box-shadow: 0 0 15px rgba(96, 165, 250, 0.5);
}

.engine-badge--economy {
  background: rgba(163, 230, 53, 0.1);
  color: #A3E635;
  border: 1px solid #A3E635;
}

.engine-badge--economy:hover {
  box-shadow: 0 0 15px rgba(163, 230, 53, 0.5);
}

.engine-badge--long-context {
  background: rgba(139, 92, 246, 0.1);
  color: #8B5CF6;
  border: 1px solid #8B5CF6;
}

.engine-badge--long-context:hover {
  box-shadow: 0 0 15px rgba(139, 92, 246, 0.5);
}

.engine-badge--dual {
  background: rgba(225, 6, 0, 0.1);
  color: #E10600;
  border: 1px solid #E10600;
}

.engine-badge--dual:hover {
  box-shadow: var(--glow-primary);
}

/* Enhanced Hero */
.hero {
  background: var(--gradient-hero);
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 150%;
  height: 150%;
  background: radial-gradient(
    circle at 50% 30%,
    rgba(225, 6, 0, 0.08) 0%,
    rgba(49, 230, 255, 0.06) 30%,
    transparent 70%
  );
  pointer-events: none;
  animation: hero-glow 8s ease-in-out infinite;
}

@keyframes hero-glow {
  0%, 100% {
    opacity: 0.4;
    transform: translateX(-50%) scale(1);
  }
  50% {
    opacity: 0.6;
    transform: translateX(-50%) scale(1.1);
  }
}

/* Three.js Placeholder (Future Enhancement Point) */
#hero-3d-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

/* Lottie Logo Container */
#lottie-logo {
  width: 150px;
  height: 150px;
  margin: 0 auto;
}

/* Reduced Motion Fallbacks */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .scan-lines::after {
    display: none;
  }

  .neon-text {
    animation: none;
    text-shadow: none;
  }

  .hero::before {
    animation: none;
  }

  .hero__orb-container {
    opacity: 0.3;
  }

  #cursor-trail {
    display: none;
  }
}

/* ===================================
   Responsive Adjustments
   =================================== */

@media (max-width: 359px) {
  :root {
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
  }
}

@media (min-width: 1440px) {
  :root {
    --container-max: 1400px;
  }
}


/* Demo Rate Limit Info Box */
.demo-panel__actions {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
  margin-top: var(--spacing-md);
  flex-wrap: wrap;
}

.demo-rate-limit-info {
  background: rgba(49, 230, 255, 0.05);
  border: 1px solid rgba(49, 230, 255, 0.2);
  border-radius: 4px;
  padding: var(--spacing-sm);
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--color-text-muted);
  flex: 1;
  min-width: 300px;
}

.demo-rate-limit-info strong {
  color: var(--color-accent-cyan);
  font-weight: 600;
}