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

:root {
  --surface: #141218;
  --surface-dim: #141218;
  --surface-bright: #3b383e;
  --surface-container-lowest: #0f0d13;
  --surface-container-low: #1d1b20;
  --surface-container: #211f24;
  --surface-container-high: #2b292f;
  --surface-container-highest: #36343a;
  --on-surface: #e6e0e9;
  --on-surface-variant: #cbc4d2;
  --inverse-surface: #e6e0e9;
  --inverse-on-surface: #322f35;
  --outline: #948e9c;
  --outline-variant: #494551;
  --surface-tint: #cfbcff;
  --primary: #cfbcff;
  --on-primary: #381e72;
  --primary-container: #6750a4;
  --on-primary-container: #e0d2ff;
  --inverse-primary: #6750a4;
  --secondary: #cdc0e9;
  --on-secondary: #342b4b;
  --tertiary: #e7c365;
  --on-tertiary: #3e2e00;
  --error: #ffb4ab;
  --on-error: #690005;
  --background: #141218;
  --on-background: #e6e0e9;
  --electric-blue: #4a9eff;
  --emerald-green: #34d399;
  --magenta: #d946ef;
  --radius-sm: 0.25rem;
  --radius: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;
  --spacing-xs: 8px;
  --spacing-sm: 12px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --container-margin: 20px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--surface);
  color: var(--on-surface);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--container-margin);
}

.glass {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.02) 100%);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(20, 18, 24, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--spacing-md);
  padding-bottom: var(--spacing-md);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-decoration: none;
  color: var(--on-surface);
}

.logo-icon {
  width: 32px;
  height: 32px;
}

.logo-text {
  font-size: 20px;
  font-weight: 700;
}

.main-nav ul {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
}

.main-nav a {
  color: var(--on-surface-variant);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s ease;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--primary);
}

.page-title {
  font-size: 40px;
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.support-page,
.privacy-page {
  padding-top: 120px;
  min-height: calc(100vh - 200px);
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
}

.mobile-menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--on-surface);
  transition: all 0.3s ease;
}

.section {
  padding: 100px 0;
}

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: 80px;
}

.hero-content {
  max-width: 600px;
  margin: 0 auto;
}

.hero-logo {
  width: 120px;
  height: 120px;
  margin-bottom: var(--spacing-xl);
  border-radius: var(--radius-xl);
}

.hero-title {
  font-size: 48px;
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: var(--spacing-md);
  background: linear-gradient(135deg, var(--primary) 0%, var(--tertiary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-tagline {
  font-size: 20px;
  color: var(--on-surface-variant);
  margin-bottom: var(--spacing-xl);
  line-height: 1.5;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--electric-blue);
  color: white;
}

.btn-primary:hover {
  background: #3a8eef;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(74, 158, 255, 0.3);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.1);
  color: var(--on-surface);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.3);
}

.apple-icon {
  width: 20px;
  height: 20px;
}

.btn-download {
  font-size: 18px;
  padding: var(--spacing-lg) var(--spacing-xl);
}

.section-title {
  font-size: 36px;
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

.feature-card {
  padding: var(--spacing-xl);
  text-align: center;
}

.feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--spacing-md);
  color: var(--electric-blue);
}

.feature-card:nth-child(2) .feature-icon {
  color: var(--emerald-green);
}

.feature-card:nth-child(3) .feature-icon {
  color: var(--magenta);
}

.feature-card:nth-child(4) .feature-icon {
  color: var(--tertiary);
}

.feature-card h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.feature-card p {
  color: var(--on-surface-variant);
  font-size: 16px;
}

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

.screenshot-item {
  padding: var(--spacing-md);
  text-align: center;
}

.screenshot-item img {
  width: 100%;
  max-width: 280px;
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
  margin-bottom: var(--spacing-sm);
}

.screenshot-item p {
  color: var(--on-surface-variant);
  font-size: 14px;
}

.support-content {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.support-intro {
  font-size: 18px;
  color: var(--on-surface-variant);
  margin-bottom: var(--spacing-lg);
}

.btn-contact {
  margin-bottom: var(--spacing-md);
}

.support-email {
  color: var(--on-surface-variant);
}

.support-email a {
  color: var(--primary);
  text-decoration: none;
}

.support-email a:hover {
  text-decoration: underline;
}

.faq-section {
  max-width: 800px;
  margin: 0 auto;
}

.faq-title {
  font-size: 24px;
  font-weight: 600;
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

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

.faq-item {
  padding: var(--spacing-md);
  overflow: hidden;
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  background: none;
  border: none;
  color: var(--on-surface);
  font-size: 18px;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
  padding: var(--spacing-sm) 0;
}

.faq-chevron {
  width: 24px;
  height: 24px;
  transition: transform 0.3s ease;
}

.faq-item.active .faq-chevron {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
  max-height: 200px;
}

.faq-answer p {
  padding-top: var(--spacing-sm);
  color: var(--on-surface-variant);
}

.privacy-content {
  padding: var(--spacing-xl);
  max-width: 800px;
  margin: 0 auto;
}

.privacy-content h3 {
  font-size: 20px;
  font-weight: 600;
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
}

.privacy-content h3:first-child {
  margin-top: 0;
}

.privacy-content p {
  color: var(--on-surface-variant);
  margin-bottom: var(--spacing-md);
}

.last-updated {
  text-align: center;
  color: var(--outline);
  font-size: 14px;
  margin-bottom: var(--spacing-lg);
}

.privacy-email {
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
}

.privacy-email:hover {
  text-decoration: underline;
}

.site-footer {
  background: var(--surface-container-low);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: var(--spacing-lg) 0;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.copyright {
  color: var(--on-surface-variant);
  font-size: 14px;
}

.footer-nav {
  display: flex;
  gap: var(--spacing-lg);
}

.footer-nav a {
  color: var(--on-surface-variant);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.2s ease;
}

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

@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: flex;
  }

  .main-nav {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: rgba(20, 18, 24, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: var(--spacing-lg);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
  }

  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .main-nav ul {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .hero-title {
    font-size: 36px;
  }

  .hero-tagline {
    font-size: 18px;
  }

  .section-title {
    font-size: 28px;
  }

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

  .screenshots-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-logo {
    width: 100px;
    height: 100px;
  }

  .hero-title {
    font-size: 28px;
  }

  .btn-download {
    font-size: 16px;
    padding: var(--spacing-md) var(--spacing-lg);
  }

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