:root {
  --bg-primary: #1b1b1f;
  --bg-surface: #252830;
  --bg-glass: rgba(30, 31, 38, 0.7);
  --accent-blue: #4f6ef6;
  --accent-purple: #8b5cf6;
  --text-primary: #f0f2ff;
  --text-secondary: #c9cce0;
  --text-tertiary: #9598b2;
  --radius-card: 20px;
  --radius-btn: 12px;
  --blur-glass: 16px;
  --transition-speed: 0.3s;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Segoe UI', system-ui, -apple-system, 'Helvetica Neue', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  perspective: 1500px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

#particles {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
}

#app {
  position: relative;
  z-index: 1;
}

a {
  color: var(--accent-blue);
  text-decoration: none;
  transition: color var(--transition-speed);
}

a:hover {
  color: var(--accent-purple);
}

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

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
  position: sticky;
  top: 0;
  z-index: 10;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 1.125rem;
}

.nav-icon {
  width: 28px;
  height: 28px;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  font-weight: 500;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-blue), var(--accent-purple));
  transition: width var(--transition-speed);
}

.nav-links a:hover::after {
  width: 100%;
}

#hero {
  min-height: 70vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 4rem 2rem;
}

#hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.hero-sub {
  color: var(--text-secondary);
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  max-width: 540px;
  margin: 1.5rem auto 2.5rem;
  line-height: 1.6;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  color: #fff;
  padding: 0.875rem 2.25rem;
  border-radius: var(--radius-btn);
  font-weight: 600;
  font-size: 1rem;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 8px 24px rgba(79, 110, 246, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(79, 110, 246, 0.5);
  color: #fff;
}

section {
  padding: 5rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-header h2 {
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.section-sub {
  color: var(--text-secondary);
  font-size: 1.125rem;
  margin-top: 0.75rem;
}

.app-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  transform-style: preserve-3d;
  transition: transform 0.1s ease-out;
}

.app-card {
  background: var(--bg-glass);
  backdrop-filter: blur(var(--blur-glass)) saturate(180%);
  -webkit-backdrop-filter: blur(var(--blur-glass)) saturate(180%);
  border: 1px solid rgba(79, 110, 246, 0.2);
  border-radius: var(--radius-card);
  padding: 2.5rem 2rem;
  text-align: center;
  transform-style: preserve-3d;
  animation: timeShift 8s infinite alternate;
  transition: border-color var(--transition-speed), box-shadow var(--transition-speed);
  will-change: transform;
}

.app-card:hover {
  border-color: rgba(79, 110, 246, 0.5);
  box-shadow: 0 0 40px rgba(79, 110, 246, 0.15);
}

.app-card:nth-child(1) { animation-delay: 0s; }
.app-card:nth-child(2) { animation-delay: -2s; }
.app-card:nth-child(3) { animation-delay: -4s; }
.app-card:nth-child(4) { animation-delay: -6s; }

.app-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 1.25rem;
  background: linear-gradient(135deg, rgba(79, 110, 246, 0.2), rgba(139, 92, 246, 0.2));
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  color: var(--accent-blue);
  transition: color var(--transition-speed);
}

.app-card:hover .app-icon {
  color: var(--accent-purple);
}

.app-title {
  font-size: 1.375rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.app-desc {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.app-status {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.25rem 0.75rem;
  border-radius: 100px;
  margin-bottom: 1.25rem;
}

.app-status.available {
  background: rgba(46, 204, 113, 0.15);
  color: #2ecc71;
  border: 1px solid rgba(46, 204, 113, 0.3);
}

.app-status.coming {
  background: rgba(79, 110, 246, 0.15);
  color: var(--accent-blue);
  border: 1px solid rgba(79, 110, 246, 0.3);
}

.btn-card {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1.5rem;
  border-radius: var(--radius-btn);
  font-weight: 600;
  font-size: 0.875rem;
  background: rgba(79, 110, 246, 0.1);
  color: var(--accent-blue);
  border: 1px solid rgba(79, 110, 246, 0.3);
  transition: all var(--transition-speed);
}

.btn-card:hover {
  background: rgba(79, 110, 246, 0.2);
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}

.btn-card.disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

.security-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.security-card {
  background: var(--bg-glass);
  backdrop-filter: blur(var(--blur-glass)) saturate(180%);
  -webkit-backdrop-filter: blur(var(--blur-glass)) saturate(180%);
  border: 1px solid rgba(79, 110, 246, 0.15);
  border-radius: var(--radius-card);
  padding: 2rem;
  text-align: center;
  transition: border-color var(--transition-speed), transform var(--transition-speed);
}

.security-card:hover {
  border-color: rgba(79, 110, 246, 0.4);
  transform: translateY(-4px);
}

.security-icon {
  width: 52px;
  height: 52px;
  margin: 0 auto 1rem;
  background: linear-gradient(135deg, rgba(79, 110, 246, 0.15), rgba(139, 92, 246, 0.15));
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.375rem;
  color: var(--accent-blue);
}

.security-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.security-card p {
  color: var(--text-secondary);
  font-size: 0.875rem;
  line-height: 1.6;
}

footer {
  border-top: 1px solid rgba(79, 110, 246, 0.1);
  padding: 3rem 2rem 2rem;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.footer-icon {
  width: 22px;
  height: 22px;
}

.footer-links {
  display: flex;
  gap: 2rem;
}

.footer-links a {
  color: var(--text-tertiary);
  font-size: 0.875rem;
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
}

.footer-links a:hover {
  color: var(--text-secondary);
}

.footer-copy {
  color: var(--text-tertiary);
  font-size: 0.8125rem;
}

@keyframes timeShift {
  0% {
    transform: translateZ(10px) rotateX(2deg) rotateY(-3deg);
  }
  50% {
    transform: translateZ(45px) rotateX(-4deg) rotateY(5deg);
  }
  100% {
    transform: translateZ(25px) rotateX(3deg) rotateY(-4deg);
  }
}

::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--bg-surface);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-tertiary);
}

::selection {
  background: rgba(79, 110, 246, 0.3);
  color: var(--text-primary);
}

@media (max-width: 768px) {
  .navbar {
    padding: 0.75rem 1.25rem;
  }

  section {
    padding: 3rem 1.25rem;
  }

  #hero {
    min-height: 60vh;
    padding: 3rem 1.25rem;
  }

  .app-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .security-grid {
    grid-template-columns: 1fr;
  }

  .app-card {
    padding: 2rem 1.5rem;
  }
}

@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;
  }

  .app-grid {
    transform: none !important;
  }
}