/* ============================================
   HEYDICT — Premium Design System
   ============================================ */

/* --- Google Fonts: Outfit for display, Inter for body --- */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800;900&family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* --- CSS Custom Properties --- */
:root {
  /* Default: Dark Theme */
  --bg-primary: #050508;
  --bg-secondary: #0a0a12;
  --bg-card: rgba(255, 255, 255, 0.025);
  --bg-card-hover: rgba(255, 255, 255, 0.05);
  --bg-glass: rgba(10, 10, 24, 0.75);
  --bg-glass-border: rgba(255, 255, 255, 0.07);

  --purple-primary: #8b5cf6;
  --purple-light: #a78bfa;
  --purple-glow: rgba(139, 92, 246, 0.25);
  --purple-deep: #6d28d9;
  --cyan-primary: #22d3ee;
  --cyan-glow: rgba(34, 211, 238, 0.2);
  --violet-glow: rgba(196, 132, 252, 0.12);
  --green-accent: #34d399;
  --amber-accent: #fbbf24;
  --rose-accent: #fb7185;

  --text-primary: #f0f0f5;
  --text-secondary: rgba(240, 240, 245, 0.55);
  --text-tertiary: rgba(240, 240, 245, 0.3);
  --text-accent: #c084fc;

  --font-display: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --section-pad-y: clamp(100px, 14vh, 160px);
  --section-pad-x: clamp(20px, 5vw, 80px);
  --container-max: 1200px;

  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-xl: 32px;
  --radius-pill: 100px;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --transition-fast: 0.2s var(--ease-out);
  --transition-medium: 0.45s var(--ease-out);
  --transition-slow: 0.8s var(--ease-out);
}

[data-theme="light"] {
  --bg-primary: #fafbff;
  --bg-secondary: #f0f1f8;
  --bg-card: rgba(0, 0, 0, 0.02);
  --bg-card-hover: rgba(0, 0, 0, 0.04);
  --bg-glass: rgba(255, 255, 255, 0.85);
  --bg-glass-border: rgba(0, 0, 0, 0.06);

  --text-primary: #0f1120;
  --text-secondary: #555a80;
  --text-tertiary: #9096b8;
  --text-accent: #7c3aed;

  --purple-glow: rgba(139, 92, 246, 0.08);
  --cyan-glow: rgba(34, 211, 238, 0.08);
  --violet-glow: rgba(196, 132, 252, 0.04);
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.65;
  overflow-x: hidden;
  transition: background-color 0.5s ease, color 0.5s ease;
}

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

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

/* --- Film grain overlay --- */
.grain-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  mix-blend-mode: overlay;
}

[data-theme="light"] .grain-overlay {
  opacity: 0.02;
}

/* --- Utility Classes --- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--section-pad-x);
}

.section {
  padding: var(--section-pad-y) 0;
  position: relative;
}

.text-gradient {
  background: linear-gradient(135deg, var(--purple-light), var(--cyan-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-gradient-warm {
  background: linear-gradient(135deg, var(--purple-primary), var(--rose-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.mono {
  font-family: var(--font-mono);
}

/* --- Scroll Reveal --- */
.reveal {
  opacity: 0;
  transform: translateY(50px);
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
}

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

.reveal-delay-1 {
  transition-delay: 0.12s;
}

.reveal-delay-2 {
  transition-delay: 0.24s;
}

.reveal-delay-3 {
  transition-delay: 0.36s;
}

.reveal-delay-4 {
  transition-delay: 0.48s;
}

/* ============================================
   NAVIGATION
   ============================================ */
.nav {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 8px 16px;
  background: var(--bg-glass);
  backdrop-filter: blur(28px) saturate(1.6);
  -webkit-backdrop-filter: blur(28px) saturate(1.6);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-pill);
  transition: var(--transition-medium);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.15);
}

.nav.scrolled {
  background: var(--bg-glass);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.3);
  border-color: rgba(139, 92, 246, 0.08);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.15rem;
  padding: 0 12px;
  white-space: nowrap;
  letter-spacing: -0.02em;
}

.logo-img {
  height: 30px;
  width: 30px;
  object-fit: cover;
  display: inline-block;
  vertical-align: middle;
  /* iOS-style squircle using superellipse approximation */
  clip-path: url(#squircle-clip);
  background: linear-gradient(135deg, var(--purple-primary), var(--purple-deep));
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.nav-links a {
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition-fast);
  white-space: nowrap;
}

.nav-links a:hover {
  color: var(--text-primary);
  background: var(--bg-card-hover);
}

.nav-cta {
  padding: 9px 22px;
  background: linear-gradient(135deg, var(--purple-primary), var(--purple-deep));
  color: white !important;
  border: none;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
  white-space: nowrap;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  box-shadow: 0 2px 12px var(--purple-glow);
}

.nav-cta:hover {
  background: linear-gradient(135deg, var(--purple-deep), var(--purple-primary));
  box-shadow: 0 4px 28px var(--purple-glow);
  transform: translateY(-1px);
}

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

.theme-btn {
  background: none;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  padding: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: var(--transition-fast);
}

.theme-btn:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
}

.theme-btn svg {
  width: 18px;
  height: 18px;
}

.sun-icon {
  display: block;
}

.moon-icon {
  display: none;
}

[data-theme="light"] .sun-icon {
  display: none;
}

[data-theme="light"] .moon-icon {
  display: block;
}

.nav-mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 4px 8px;
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  padding: 120px var(--section-pad-x) 60px;
}

/* Ambient glow */
.hero::before {
  content: '';
  position: absolute;
  top: -30%;
  left: -15%;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, var(--purple-glow) 0%, transparent 70%);
  filter: blur(100px);
  animation: float-slow 10s ease-in-out infinite alternate;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -15%;
  right: -15%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--cyan-glow) 0%, transparent 70%);
  filter: blur(100px);
  animation: float-slow 12s ease-in-out infinite alternate-reverse;
  pointer-events: none;
}

@keyframes float-slow {
  0% {
    transform: translate(0, 0) scale(1);
  }

  100% {
    transform: translate(50px, -40px) scale(1.15);
  }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 18px;
  background: var(--bg-card);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-pill);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-accent);
  margin-bottom: 44px;
  backdrop-filter: blur(12px);
  letter-spacing: 0.02em;
}

.hero-badge .badge-dot {
  width: 6px;
  height: 6px;
  background: var(--green-accent);
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {

  0%,
  100% {
    opacity: 1;
    box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.4);
  }

  50% {
    opacity: 0.8;
    box-shadow: 0 0 0 6px rgba(52, 211, 153, 0);
  }
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(3.2rem, 9vw, 6rem);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -0.04em;
  margin-bottom: 28px;
  position: relative;
  z-index: 1;
}

.hero-subtitle {
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  color: var(--text-secondary);
  max-width: 560px;
  line-height: 1.75;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}

.hero-platforms {
  font-size: 0.82rem;
  color: var(--text-tertiary);
  margin-bottom: 44px;
  position: relative;
  z-index: 1;
}

.hero-platforms span {
  font-family: var(--font-mono);
  font-weight: 500;
  color: var(--text-secondary);
}

/* 3D Canvas Container */
.hero-3d-container {
  position: relative;
  width: 100%;
  max-width: 900px;
  height: 260px;
  margin-bottom: 48px;
  z-index: 1;
}

#hero-3d-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.hero-cta-group {
  display: flex;
  gap: 16px;
  align-items: center;
  position: relative;
  z-index: 1;
  flex-wrap: wrap;
  justify-content: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 15px 30px;
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.3s var(--ease-spring);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--purple-primary), var(--purple-deep));
  color: white;
  box-shadow: 0 4px 28px var(--purple-glow), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 10px 50px var(--purple-glow), inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--bg-glass-border);
  backdrop-filter: blur(12px);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: rgba(139, 92, 246, 0.2);
  transform: translateY(-3px);
}

.hero-scroll-hint {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-tertiary);
  font-size: 0.75rem;
  animation: bounce-gentle 2.5s ease-in-out infinite;
  letter-spacing: 0.04em;
}

.hero-scroll-hint svg {
  width: 18px;
  height: 18px;
}

@keyframes bounce-gentle {

  0%,
  100% {
    transform: translateX(-50%) translateY(0);
  }

  50% {
    transform: translateX(-50%) translateY(8px);
  }
}

/* ============================================
   MARQUEE
   ============================================ */
.marquee-section {
  padding: 20px 0;
  border-top: 1px solid var(--bg-glass-border);
  border-bottom: 1px solid var(--bg-glass-border);
  overflow: hidden;
  position: relative;
  z-index: 1;
}

.marquee-track {
  display: flex;
  overflow: hidden;
  mask-image: linear-gradient(to right, transparent 0%, black 10%, black 90%, transparent 100%);
  -webkit-mask-image: linear-gradient(to right, transparent 0%, black 10%, black 90%, transparent 100%);
}

.marquee-content {
  display: flex;
  align-items: center;
  gap: 32px;
  animation: marquee-scroll 25s linear infinite;
  white-space: nowrap;
  min-width: max-content;
}

.marquee-item {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
}

.marquee-dot {
  color: var(--text-tertiary);
  font-size: 0.7rem;
}

@keyframes marquee-scroll {
  from {
    transform: translateX(0);
  }

  to {
    transform: translateX(-50%);
  }
}

/* ============================================
   SECTION HEADERS
   ============================================ */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--purple-light);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  margin-bottom: 20px;
}

.section-label::before {
  content: '';
  display: block;
  width: 24px;
  height: 2px;
  background: linear-gradient(to right, var(--purple-primary), transparent);
  border-radius: 2px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

.section-description {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 580px;
  line-height: 1.75;
}

/* ============================================
   SPEED SECTION
   ============================================ */
.speed-section {
  position: relative;
}

.speed-section::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 900px;
  height: 900px;
  background: radial-gradient(circle, var(--violet-glow) 0%, transparent 55%);
  filter: blur(80px);
  pointer-events: none;
}

.speed-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
  margin-top: 72px;
}

.speed-visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
}

.latency-display {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.latency-number {
  font-family: var(--font-mono);
  font-size: clamp(4.5rem, 11vw, 7.5rem);
  font-weight: 900;
  letter-spacing: -0.05em;
  line-height: 1;
}

.latency-unit {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  color: var(--text-tertiary);
  margin-top: 4px;
}

.latency-label {
  font-size: 0.85rem;
  color: var(--text-tertiary);
  margin-top: 18px;
  text-align: center;
  max-width: 220px;
  line-height: 1.5;
}

.latency-ring {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 220px;
  height: 220px;
  border-radius: 50%;
  border: 1px solid rgba(139, 92, 246, 0.12);
  animation: ring-pulse 3.5s ease-in-out infinite;
}

.latency-ring:nth-child(2) {
  width: 310px;
  height: 310px;
  animation-delay: 0.6s;
  border-color: rgba(139, 92, 246, 0.06);
}

.latency-ring:nth-child(3) {
  width: 400px;
  height: 400px;
  animation-delay: 1.2s;
  border-color: rgba(139, 92, 246, 0.03);
}

@keyframes ring-pulse {

  0%,
  100% {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
  }

  50% {
    transform: translate(-50%, -50%) scale(1.06);
    opacity: 0.5;
  }
}

.speed-features {
  display: flex;
  flex-direction: column;
  gap: 36px;
}

.speed-feature {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.speed-feature-icon {
  flex-shrink: 0;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-md);
  font-size: 1.3rem;
  transition: var(--transition-fast);
}

.speed-feature:hover .speed-feature-icon {
  border-color: rgba(139, 92, 246, 0.2);
  box-shadow: 0 0 20px var(--purple-glow);
}

.speed-feature h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.speed-feature p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ============================================
   FEATURES / USE-CASE CARDS
   ============================================ */
.features-section {
  position: relative;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 72px;
}

.feature-card {
  position: relative;
  padding: 40px 28px;
  background: var(--bg-card);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  transition: all 0.5s var(--ease-out);
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(139, 92, 246, 0.5), transparent);
  opacity: 0;
  transition: var(--transition-medium);
}

.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(139, 92, 246, 0.12);
  transform: translateY(-6px);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.25), 0 0 0 1px rgba(139, 92, 246, 0.05);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-card-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.12), rgba(34, 211, 238, 0.08));
  border: 1px solid rgba(139, 92, 246, 0.15);
  border-radius: var(--radius-md);
  margin-bottom: 28px;
  overflow: hidden;
  padding: 8px;
}

.feature-card-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.3));
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
  line-height: 1.3;
}

.feature-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
}

.feature-card-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  background: rgba(139, 92, 246, 0.08);
  border: 1px solid rgba(139, 92, 246, 0.15);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--purple-light);
}

/* Terminal mock */
.terminal-mock {
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
  padding: 16px;
  margin-bottom: 20px;
  font-family: var(--font-mono);
  font-size: 0.73rem;
  line-height: 1.9;
  overflow: hidden;
}

[data-theme="light"] .terminal-mock {
  background: rgba(15, 17, 32, 0.92);
  color: #e2e4f0;
}

.terminal-mock .line-error {
  color: #f87171;
}

.terminal-mock .line-success {
  color: var(--green-accent);
}

.terminal-mock .line-dim {
  color: var(--text-tertiary);
}

.terminal-mock .line-cmd {
  color: var(--cyan-primary);
}

[data-theme="light"] .terminal-mock .line-dim {
  color: rgba(255, 255, 255, 0.4);
}

[data-theme="light"] .terminal-mock .line-cmd {
  color: #67e8f9;
}

/* ============================================
   PRIVACY SECTION
   ============================================ */
.privacy-section {
  position: relative;
  overflow: hidden;
}

.privacy-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(180deg, transparent, rgba(34, 211, 238, 0.02) 50%, transparent);
  pointer-events: none;
}

.privacy-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
  margin-top: 72px;
}

.privacy-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.privacy-shield {
  position: relative;
  width: 240px;
  height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.privacy-shield-icon {
  width: 120px;
  height: 120px;
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
}

.privacy-shield-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 0 30px var(--cyan-glow));
}

.privacy-shield::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle, var(--cyan-glow) 0%, transparent 70%);
  filter: blur(40px);
  animation: shield-glow 4s ease-in-out infinite alternate;
}

@keyframes shield-glow {
  0% {
    opacity: 0.4;
    transform: scale(0.9);
  }

  100% {
    opacity: 1;
    transform: scale(1.12);
  }
}

.privacy-points {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.privacy-point {
  display: flex;
  gap: 18px;
  align-items: flex-start;
}

.privacy-point-check {
  flex-shrink: 0;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(34, 211, 238, 0.08);
  border: 1px solid rgba(34, 211, 238, 0.2);
  border-radius: 50%;
  color: var(--cyan-primary);
  font-size: 0.8rem;
  font-weight: 700;
}

.privacy-point h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.privacy-point p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ============================================
   VISION SECTION
   ============================================ */
.vision-section {
  position: relative;
}

.vision-card {
  margin-top: 72px;
  padding: 52px;
  background: var(--bg-card);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-xl);
  backdrop-filter: blur(28px);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 52px;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.vision-card::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, var(--purple-glow) 0%, transparent 70%);
  filter: blur(80px);
  pointer-events: none;
}

.vision-text h3 {
  font-family: var(--font-display);
  font-size: 1.9rem;
  font-weight: 800;
  margin-bottom: 18px;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.vision-text p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 28px;
}

.vision-features-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.vision-feature-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.vision-feature-item .icon {
  color: var(--purple-light);
  font-size: 0.65rem;
}

.vision-demo {
  position: relative;
  z-index: 1;
}

.vision-demo-window {
  background: rgba(0, 0, 0, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.3);
}

[data-theme="light"] .vision-demo-window {
  background: rgba(15, 17, 32, 0.95);
}

.vision-demo-titlebar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.vision-demo-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.vision-demo-dot.red {
  background: #ff5f57;
}

.vision-demo-dot.yellow {
  background: #febc2e;
}

.vision-demo-dot.green {
  background: #28c840;
}

.vision-demo-content {
  padding: 20px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  line-height: 2;
  color: #e2e4f0;
}

.vision-demo-content .error-line {
  color: #f87171;
  background: rgba(248, 113, 113, 0.06);
  padding: 2px 6px;
  border-radius: 3px;
}

.vision-demo-content .dim {
  color: rgba(255, 255, 255, 0.35);
}

.vision-demo-overlay {
  margin-top: 12px;
  padding: 14px 18px;
  background: rgba(139, 92, 246, 0.08);
  border: 1px solid rgba(139, 92, 246, 0.2);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.84rem;
  color: var(--purple-light);
  display: flex;
  align-items: center;
  gap: 10px;
}

/* ============================================
   ROADMAP SECTION
   ============================================ */
.roadmap-section {
  position: relative;
}

.roadmap-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 72px;
}

.roadmap-card {
  padding: 36px 28px;
  background: var(--bg-card);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(16px);
  position: relative;
  overflow: hidden;
  transition: all 0.4s var(--ease-out);
}

.roadmap-card:hover {
  border-color: rgba(139, 92, 246, 0.12);
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.2);
}

.roadmap-card-badge {
  display: inline-flex;
  padding: 4px 12px;
  background: rgba(251, 191, 36, 0.08);
  border: 1px solid rgba(251, 191, 36, 0.2);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--amber-accent);
  margin-bottom: 22px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.roadmap-card-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.roadmap-card-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 4px 10px rgba(0, 0, 0, 0.2));
}

.roadmap-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.roadmap-card p {
  font-size: 0.86rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ============================================
   DOWNLOAD BUTTON + OS SWITCHER
   ============================================ */
.download-btn-wrapper {
  position: relative;
  display: inline-flex;
  align-items: stretch;
}

.download-btn-wrapper .btn-primary {
  border-radius: var(--radius-pill) 0 0 var(--radius-pill);
  padding-right: 24px;
}

.os-switcher-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 14px;
  background: linear-gradient(135deg, var(--purple-deep), #5b21b6);
  color: white;
  border: none;
  border-left: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 0 var(--radius-pill) var(--radius-pill) 0;
  cursor: pointer;
  transition: var(--transition-fast);
}

.os-switcher-btn:hover {
  background: linear-gradient(135deg, #5b21b6, #4c1d95);
}

.os-switcher-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  background: var(--bg-glass);
  backdrop-filter: blur(28px) saturate(1.6);
  -webkit-backdrop-filter: blur(28px) saturate(1.6);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: var(--transition-fast);
  z-index: 50;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.os-switcher-dropdown.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.os-option {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 12px 18px;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 0.88rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-fast);
  text-align: left;
}

.os-option:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
}

.os-option.active {
  color: var(--purple-light);
  background: rgba(139, 92, 246, 0.08);
}

.os-option svg {
  flex-shrink: 0;
}

/* ============================================
   PRICING SECTION
   ============================================ */
.pricing-section {
  position: relative;
  overflow: hidden;
}

.pricing-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, var(--purple-glow) 0%, transparent 55%);
  filter: blur(120px);
  pointer-events: none;
}

.pricing-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  margin-top: 72px;
  max-width: 820px;
  margin-left: auto;
  margin-right: auto;
}

.pricing-card {
  position: relative;
  padding: 40px 32px;
  background: var(--bg-card);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-xl);
  backdrop-filter: blur(24px);
  display: flex;
  flex-direction: column;
  transition: all 0.4s var(--ease-out);
}

.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.2);
}

.pricing-card-featured {
  border-color: rgba(139, 92, 246, 0.3);
  background: linear-gradient(180deg, rgba(139, 92, 246, 0.06) 0%, var(--bg-card) 40%);
  box-shadow: 0 0 0 1px rgba(139, 92, 246, 0.08), 0 8px 32px rgba(139, 92, 246, 0.1);
}

.pricing-card-featured:hover {
  box-shadow: 0 0 0 1px rgba(139, 92, 246, 0.15), 0 20px 60px rgba(139, 92, 246, 0.15);
}

.pricing-card-badge {
  position: absolute;
  top: -1px;
  left: 50%;
  transform: translateX(-50%);
  padding: 5px 18px;
  background: linear-gradient(135deg, var(--purple-primary), var(--purple-deep));
  color: white;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
}

.pricing-card-header {
  margin-bottom: 32px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--bg-glass-border);
}

.pricing-card-header h3 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.pricing-price {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 12px;
}

.pricing-amount {
  font-family: var(--font-display);
  font-size: 3.2rem;
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1;
}

.pricing-card-featured .pricing-amount {
  background: linear-gradient(135deg, var(--purple-light), var(--cyan-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.pricing-period {
  font-size: 0.92rem;
  color: var(--text-tertiary);
  font-weight: 500;
}

.pricing-description {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.pricing-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
  margin-bottom: 32px;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.86rem;
  color: var(--text-secondary);
}

.pricing-features li.included .check {
  color: var(--green-accent);
  font-weight: 700;
  font-size: 0.9rem;
  flex-shrink: 0;
  width: 18px;
}

.pricing-features li.excluded {
  color: var(--text-tertiary);
}

.pricing-features li.excluded .cross {
  color: var(--text-tertiary);
  flex-shrink: 0;
  width: 18px;
  text-align: center;
}

.pricing-features li.highlight {
  color: var(--text-primary);
  font-weight: 600;
}

.pricing-features li.highlight .check {
  color: var(--purple-light);
}

.pricing-cta {
  width: 100%;
  justify-content: center;
  text-align: center;
}

.pricing-note {
  text-align: center;
  margin-top: 14px;
  font-size: 0.76rem;
  color: var(--text-tertiary);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  padding: 72px 0 42px;
  border-top: 1px solid var(--bg-glass-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 52px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer-brand .logo {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-brand p {
  font-size: 0.86rem;
  color: var(--text-secondary);
  max-width: 280px;
  line-height: 1.65;
}

.footer-socials {
  display: flex;
  gap: 12px;
}

.footer-social-link {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border: 1px solid var(--bg-glass-border);
  border-radius: 50%;
  color: var(--text-secondary);
  transition: var(--transition-fast);
}

.footer-social-link:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
  border-color: rgba(139, 92, 246, 0.2);
  transform: translateY(-2px);
}

.footer-col h4 {
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-tertiary);
  margin-bottom: 22px;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.footer-col a {
  font-size: 0.88rem;
  color: var(--text-secondary);
  transition: var(--transition-fast);
}

.footer-col a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 28px;
  border-top: 1px solid var(--bg-glass-border);
  font-size: 0.78rem;
  color: var(--text-tertiary);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {

  .speed-grid,
  .privacy-grid {
    grid-template-columns: 1fr;
    gap: 52px;
  }

  .vision-card {
    grid-template-columns: 1fr;
    gap: 40px;
    padding: 40px;
  }

  .features-grid,
  .roadmap-grid {
    grid-template-columns: 1fr;
    max-width: 520px;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 420px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .nav-mobile-toggle {
    display: block;
  }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--bg-glass);
    backdrop-filter: blur(28px);
    border: 1px solid var(--bg-glass-border);
    border-radius: var(--radius-lg);
    padding: 16px;
    gap: 4px;
  }

  .nav-links.open a {
    padding: 12px 16px;
    width: 100%;
  }

  .hero {
    padding-top: 100px;
  }

  .hero-title {
    font-size: clamp(2.4rem, 9vw, 3.8rem);
  }

  .hero-3d-container {
    height: 140px;
  }

  .cta-form {
    flex-direction: column;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }

  .marquee-item {
    font-size: 0.72rem;
  }
}

/* ============================================
   PARTICLES CANVAS
   ============================================ */
#particles-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.35;
}

[data-theme="light"] #particles-canvas {
  opacity: 0.15;
}