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

:root {
  /* Light Theme - Forest Green */
  --bg-primary: #f2f3f5;
  --bg-secondary: #ffffff;
  --bg-tertiary: #e3e5e8;
  --bg-hover: #d4d7dc;
  --accent: #4a7c59;
  --accent-hover: #3d6649;
  --accent-light: rgba(74, 124, 89, 0.15);
  --text-primary: #2e3338;
  --text-secondary: #5f6368;
  --text-tertiary: #949ba4;
  --border: #e3e5e8;
  --border-strong: #d4d7dc;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --radius: 12px;
  --radius-lg: 16px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
  /* Dark Theme - Forest Green */
  --bg-primary: #1e2124;
  --bg-secondary: #282b30;
  --bg-tertiary: #36393e;
  --bg-hover: #424549;
  --accent: #5a9c6e;
  --accent-hover: #6ab07e;
  --accent-light: rgba(90, 156, 110, 0.15);
  --text-primary: #dcddde;
  --text-secondary: #96989d;
  --text-tertiary: #72767d;
  --border: #36393e;
  --border-strong: #424549;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6), 0 10px 10px -5px rgba(0, 0, 0, 0.5);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(var(--bg-primary), 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 1.25rem;
}

.logo {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--accent), var(--accent-hover));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}

.logo svg {
  width: 24px;
  height: 24px;
}

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

.nav-links a {
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.9375rem;
  transition: var(--transition);
  position: relative;
}

.nav-links a:not(.nav-cta):not(.github-link)::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: var(--transition);
}

.nav-links a:not(.nav-cta):not(.github-link):hover {
  color: var(--text-primary);
}

.nav-links a:not(.nav-cta):not(.github-link):hover::after {
  width: 100%;
}

.nav-cta {
  background: var(--accent);
  color: white !important;
  padding: 10px 20px;
  border-radius: 8px;
  font-weight: 600 !important;
}

.nav-cta:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

.github-link {
  color: var(--text-secondary);
}

.github-link:hover {
  color: var(--text-primary);
}

.theme-toggle {
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  width: 40px;
  height: 40px;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

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

.theme-toggle .sun-icon,
.theme-toggle .moon-icon {
  display: none;
}

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

[data-theme="dark"] .theme-toggle .sun-icon {
  display: block;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border);
  padding: 16px 24px;
  flex-direction: column;
  gap: 16px;
  z-index: 999;
}

.mobile-menu.active {
  display: flex;
}

.mobile-menu a {
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 500;
  padding: 12px;
  border-radius: 8px;
  transition: var(--transition);
}

.mobile-menu a:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.mobile-cta {
  background: var(--accent);
  color: white !important;
  text-align: center;
}

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 50%, var(--accent-light) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(74, 124, 89, 0.05) 0%, transparent 40%);
  pointer-events: none;
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-light);
  color: var(--accent);
  padding: 8px 16px;
  border-radius: 100px;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 24px;
  border: 1px solid var(--accent);
}

.hero-title {
  font-size: 4rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

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

.hero-description {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 32px;
  max-width: 540px;
  line-height: 1.7;
}

.hero-description strong {
  color: var(--text-primary);
}

.hero-buttons {
  display: flex;
  gap: 16px;
  margin-bottom: 48px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  transition: var(--transition);
  border: none;
  cursor: pointer;
}

.btn-primary {
  background: var(--accent);
  color: white;
  box-shadow: 0 4px 14px rgba(74, 124, 89, 0.4);
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(74, 124, 89, 0.5);
}

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--bg-secondary);
  border-color: var(--border-strong);
}

.hero-stats {
  display: flex;
  gap: 32px;
}

.stat {
  display: flex;
  flex-direction: column;
}

.stat-number {
  font-weight: 700;
  color: var(--text-primary);
  font-size: 0.9375rem;
}

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

.hero-visual {
  position: relative;
}

.app-preview {
  position: relative;
  transform: perspective(1000px) rotateY(-5deg) rotateX(2deg);
  transition: var(--transition);
}

.app-preview:hover {
  transform: perspective(1000px) rotateY(-2deg) rotateX(1deg);
}

.app-window {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--border);
  overflow: hidden;
}

.app-header {
  background: var(--bg-tertiary);
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}

.app-dots {
  display: flex;
  gap: 8px;
}

.app-dots span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--border-strong);
}

.app-dots span:first-child {
  background: #ef4444;
}

.app-dots span:nth-child(2) {
  background: #f59e0b;
}

.app-dots span:nth-child(3) {
  background: #22c55e;
}

.app-content {
  display: flex;
  height: 320px;
}

.sidebar-mock {
  width: 60px;
  background: var(--bg-tertiary);
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.logo-mock {
  width: 36px;
  height: 36px;
  background: var(--accent);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: 1.125rem;
}

.nav-items {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.nav-item {
  width: 32px;
  height: 32px;
  background: var(--border);
  border-radius: 6px;
}

.nav-item.active {
  background: var(--accent);
}

.main-mock {
  flex: 1;
  padding: 20px;
  background: var(--bg-primary);
}

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

.game-card-mock {
  background: var(--bg-secondary);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  position: relative;
}

.card-cover {
  height: 100px;
  background: linear-gradient(135deg, var(--accent-light), var(--bg-tertiary));
}

.card-info {
  padding: 12px;
}

.card-title {
  height: 16px;
  background: var(--border-strong);
  border-radius: 4px;
  margin-bottom: 8px;
  width: 80%;
}

.card-meta {
  height: 12px;
  background: var(--border);
  border-radius: 4px;
  width: 60%;
}

.cloud-badge-mock {
  position: absolute;
  top: 8px;
  right: 8px;
  background: var(--accent);
  color: white;
  width: 24px;
  height: 24px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.cloud-badge-mock svg {
  width: 14px;
  height: 14px;
}

.floating-badge {
  position: absolute;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  padding: 10px 16px;
  border-radius: 100px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  box-shadow: var(--shadow-lg);
  animation: float 3s ease-in-out infinite;
}

.cloud-feature {
  top: 20%;
  right: -20px;
  animation-delay: 0s;
}

.private-feature {
  bottom: 20%;
  right: -40px;
  animation-delay: 1.5s;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
}

.hero-scroll a {
  color: var(--text-tertiary);
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(-10px);
  }
  60% {
    transform: translateY(-5px);
  }
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-badge {
  display: inline-block;
  background: var(--accent-light);
  color: var(--accent);
  padding: 6px 16px;
  border-radius: 100px;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.section-description {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.features {
  padding: 120px 0;
  background: var(--bg-secondary);
}

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

.feature-card {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition);
  position: relative;
 }

.feature-card:hover {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}

.feature-card.featured {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}

.feature-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  background: var(--accent);
  color: white;
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
}

.feature-icon {
  width: 56px;
  height: 56px;
  background: var(--bg-tertiary);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.feature-icon.accent {
  background: var(--accent-light);
  color: var(--accent);
}

.feature-icon svg {
  width: 28px;
  height: 28px;
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.6;
}

.cloud-section {
  padding: 120px 0;
  background: var(--bg-primary);
}

.cloud-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.cloud-text h2 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 20px;
  line-height: 1.2;
}

.cloud-description {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: 32px;
  line-height: 1.7;
}

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

.cloud-feature-item {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-primary);
  font-size: 1rem;
}

.cloud-feature-item svg {
  width: 20px;
  height: 20px;
  color: var(--accent);
  flex-shrink: 0;
}

.cloud-visual {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: 40px;
  border: 1px solid var(--border);
}

.cloud-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 24px;
}

.flow-item {
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.flow-icon {
  width: 64px;
  height: 64px;
  background: var(--bg-tertiary);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
  color: var(--text-primary);
  border: 2px solid var(--border);
}

.flow-icon.encrypted {
  background: var(--accent-light);
  border-color: var(--accent);
  color: var(--accent);
}

.flow-icon svg {
  width: 28px;
  height: 28px;
}

.flow-item span {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.flow-arrow {
  color: var(--accent);
}

.flow-arrow svg {
  width: 24px;
  height: 24px;
}

.cloud-note {
  text-align: center;
  font-size: 0.5rem;
  color: var(--text-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.cloud-note svg {
  width: 10px;
  height: 10px;
}

.privacy-section {
  padding: 120px 0;
  background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

.privacy-header {
  text-align: center;
  margin-bottom: 64px;
}

.privacy-header h2 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 20px;
}

.privacy-lead {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.privacy-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.privacy-card {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition);
}

.privacy-card:hover {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}

.privacy-icon {
  width: 48px;
  height: 48px;
  background: var(--accent-light);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--accent);
}

.privacy-icon svg {
  width: 24px;
  height: 24px;
}

.privacy-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.privacy-card p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.6;
}

.privacy-statement {
  background: var(--accent-light);
  border: 1px solid var(--accent);
  border-radius: var(--radius-lg);
  padding: 24px 32px;
  display: flex;
  align-items: center;
  gap: 20px;
  max-width: 800px;
  margin: 0 auto;
}

.statement-icon {
  width: 48px;
  height: 48px;
  background: var(--accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  flex-shrink: 0;
}

.statement-icon svg {
  width: 24px;
  height: 24px;
}

.privacy-statement p {
  color: var(--text-primary);
  font-size: 1rem;
  line-height: 1.6;
}

.download-section {
  padding: 120px 0;
  background: var(--bg-primary);
}

.download-header {
  text-align: center;
  margin-bottom: 64px;
}

.download-header h2 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 16px;
}

.download-description {
  font-size: 1.125rem;
  color: var(--text-secondary);
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}

.download-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  text-align: center;
  transition: var(--transition);
}

.download-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: var(--shadow-lg);
}

.download-icon {
  width: 64px;
  height: 64px;
  background: var(--accent-light);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  color: var(--accent);
}

.download-icon svg {
  width: 32px;
  height: 32px;
}

.download-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.download-card p {
  color: var(--text-tertiary);
  font-size: 0.875rem;
  margin-bottom: 24px;
}

.btn-download {
  background: var(--accent);
  color: white;
  width: 100%;
  justify-content: center;
  margin-bottom: 12px;
}

.btn-download:hover {
  background: var(--accent-hover);
}

.download-meta {
  display: block;
  color: var(--text-tertiary);
  font-size: 0.8125rem;
}

.download-footer {
  text-align: center;
}

.all-releases {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
}

.all-releases:hover {
  color: var(--accent-hover);
}

.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 48px 0;
}

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

.footer-brand {
  display: flex;
  align-items: center;
  gap: 16px;
}

.footer-brand .logo {
  width: 36px;
  height: 36px;
}

.footer-brand .logo svg {
  width: 20px;
  height: 20px;
}

.footer-info h4 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 2px;
}

.footer-info p {
  color: var(--text-tertiary);
  font-size: 0.875rem;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
}

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

.footer-legal {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-tertiary);
  font-size: 0.875rem;
}

.separator {
  color: var(--border-strong);
}

@media (max-width: 1024px) {
  .hero-container {
    grid-template-columns: 1fr;
    gap: 48px;
    text-align: center;
  }
  
  .hero-content {
    order: 1;
  }
  
  .hero-visual {
    order: 2;
  }
  
  .hero-description {
    margin-left: auto;
    margin-right: auto;
  }
  
  .hero-buttons {
    justify-content: center;
  }
  
  .hero-stats {
    justify-content: center;
  }
  
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .cloud-content {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  
  .cloud-visual {
    order: -1;
  }
  
  .download-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .mobile-menu-btn {
    display: block;
  }
  
  .hero {
    padding: 100px 0 60px;
  }

  .hero-visual {
    display: none;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .hero-description {
    font-size: 1rem;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .privacy-grid {
    grid-template-columns: 1fr;
  }
  
  .section-title {
    font-size: 1.875rem;
  }
  
  .cloud-text h2,
  .privacy-header h2,
  .download-header h2 {
    font-size: 1.875rem;
  }
  
  .footer-content {
    flex-direction: column;
    text-align: center;
  }
}