/* Base Styles */
:root {
  --background: #ffffff;
  --foreground: #0f172a;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --accent: #06b6d4;
  --muted: #64748b;
  --card-bg: #f8fafc;
  --border: #e2e8f0;
  --radius: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #020617;
    --foreground: #f1f5f9;
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --accent: #22d3ee;
    --muted: #94a3b8;
    --card-bg: #0f172a;
    --border: #1e293b;
  }
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--background);
  color: var(--foreground);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

@media (prefers-color-scheme: dark) {
  .nav {
    background: rgba(2, 6, 23, 0.8);
  }
}

.nav-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-logo {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}

.nav-title {
  font-size: 20px;
  font-weight: 700;
}

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

.nav-link {
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-link:hover {
  color: var(--foreground);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}

.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(37, 99, 235, 0.3);
}

.btn-outline {
  background: transparent;
  color: var(--foreground);
  border: 1px solid var(--border);
}

.btn-outline:hover {
  background: var(--card-bg);
  border-color: var(--muted);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 13px;
}

.btn-lg {
  padding: 14px 28px;
  font-size: 16px;
}

/* Hero Section */
.hero {
  position: relative;
  padding: 120px 0 80px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(37, 99, 235, 0.05) 0%, transparent 100%);
}

@media (prefers-color-scheme: dark) {
  .hero-bg {
    background: linear-gradient(180deg, rgba(59, 130, 246, 0.1) 0%, transparent 100%);
  }
}

.hero-content {
  position: relative;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(37, 99, 235, 0.1);
  color: var(--primary);
  border-radius: 100px;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 32px;
  animation: fadeUp 0.6s ease-out forwards;
}

.badge-dot {
  width: 8px;
  height: 8px;
  background: var(--primary);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.hero-title {
  font-size: 48px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
  animation: fadeUp 0.6s ease-out forwards;
  animation-delay: 0.1s;
  opacity: 0;
}

@media (min-width: 768px) {
  .hero-title {
    font-size: 64px;
  }
}

.gradient-text {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: 18px;
  color: var(--muted);
  max-width: 560px;
  margin: 0 auto 40px;
  animation: fadeUp 0.6s ease-out forwards;
  animation-delay: 0.2s;
  opacity: 0;
}

.hero-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  animation: fadeUp 0.6s ease-out forwards;
  animation-delay: 0.3s;
  opacity: 0;
}

@media (min-width: 640px) {
  .hero-actions {
    flex-direction: row;
    justify-content: center;
  }
}

/* Hero Screenshot */
.hero-screenshot {
  margin-top: 80px;
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
  animation: fadeUp 0.6s ease-out forwards;
  animation-delay: 0.4s;
  opacity: 0;
}

.window-chrome {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-bottom: none;
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  padding: 16px;
}

.window-dots {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.dot-red { background: #ef4444; }
.dot-yellow { background: #f59e0b; }
.dot-green { background: #10b981; }

.window-titlebar {
  height: 24px;
  background: var(--background);
  border-radius: 6px;
  max-width: 320px;
}

.window-content {
  background: var(--background);
  border: 1px solid var(--border);
  border-top: none;
  border-radius: 0 0 var(--radius-xl) var(--radius-xl);
  padding: 32px;
}

.app-layout {
  display: grid;
  grid-template-columns: 1fr 1.4fr 2fr;
  gap: 24px;
}

@media (max-width: 768px) {
  .app-layout {
    grid-template-columns: 1fr;
  }
}

/* App Sidebar Mock */
.app-sidebar {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sidebar-item {
  height: 32px;
  background: var(--card-bg);
  border-radius: 8px;
  border: 1px solid var(--border);
}

.sidebar-item.active {
  background: rgba(37, 99, 235, 0.2);
  border-color: var(--primary);
}

.sidebar-divider {
  height: 1px;
  background: var(--border);
  margin: 8px 0;
}

/* App List Mock */
.app-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.list-search {
  height: 40px;
  background: var(--card-bg);
  border-radius: 8px;
  border: 1px solid var(--border);
}

.list-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.stat-card {
  height: 64px;
  background: rgba(37, 99, 235, 0.1);
  border-radius: 8px;
  border: 1px solid rgba(37, 99, 235, 0.2);
}

.list-item {
  height: 80px;
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  padding: 12px;
}

/* App Detail Mock */
.app-detail {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.detail-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.detail-title {
  height: 32px;
  width: 40%;
  background: var(--card-bg);
  border-radius: 8px;
}

.detail-actions {
  display: flex;
  gap: 8px;
}

.action-btn {
  height: 32px;
  width: 64px;
  background: var(--card-bg);
  border-radius: 8px;
  border: 1px solid var(--border);
}

.action-btn.primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border: none;
}

.detail-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

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

.info-card {
  height: 80px;
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
}

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

.panel {
  height: 160px;
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
}

/* Features Section */
.features {
  padding: 80px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-title {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 16px;
}

@media (min-width: 768px) {
  .section-title {
    font-size: 40px;
  }
}

.section-description {
  font-size: 18px;
  color: var(--muted);
  max-width: 560px;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 640px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

.feature-card {
  padding: 24px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  transition: all 0.2s;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

@media (prefers-color-scheme: dark) {
  .feature-card:hover {
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
  }
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  margin-bottom: 16px;
}

.feature-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.feature-description {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.6;
}

/* Download Section */
.download {
  padding: 80px 0;
  background: var(--card-bg);
}

.download-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  max-width: 640px;
  margin: 0 auto;
}

@media (min-width: 640px) {
  .download-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.download-card {
  padding: 32px;
  background: var(--background);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  text-align: center;
  transition: all 0.2s;
}

.download-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

@media (prefers-color-scheme: dark) {
  .download-card:hover {
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
  }
}

.download-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  margin: 0 auto 16px;
  background: var(--card-bg);
  border: 1px solid var(--border);
}

.download-icon.gradient-bg {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  border: none;
}

.download-title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
}

.download-description {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 16px;
}

.download-version {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 20px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.download-card:last-child .download-version {
  background: none;
  -webkit-text-fill-color: var(--foreground);
  color: var(--foreground);
}

.download-requirements {
  text-align: center;
  font-size: 14px;
  color: var(--muted);
  margin-top: 32px;
}

/* Footer */
.footer {
  padding: 32px 0;
  border-top: 1px solid var(--border);
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

@media (min-width: 640px) {
  .footer-content {
    flex-direction: row;
    justify-content: space-between;
  }
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-title {
  font-size: 16px;
  font-weight: 600;
}

.footer-copyright {
  font-size: 14px;
  color: var(--muted);
}

/* Animations */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.gradient-bg {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
}