/* XClaw Website - Modern Dark/Light Theme */

:root {
  --color-bg-primary: #0f0f0f;
  --color-bg-secondary: #1a1a1a;
  --color-bg-tertiary: #252525;
  --color-text-primary: #ffffff;
  --color-text-secondary: #a0a0a0;
  --color-text-muted: #666666;
  --color-accent: #6366f1;
  --color-accent-hover: #818cf8;
  --color-border: #333333;
  --color-gradient-start: #6366f1;
  --color-gradient-end: #8b5cf6;
  --shadow-lg: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.3);
}

@media (prefers-color-scheme: light) {
  :root {
    --color-bg-primary: #ffffff;
    --color-bg-secondary: #f8fafc;
    --color-bg-tertiary: #f1f5f9;
    --color-text-primary: #0f172a;
    --color-text-secondary: #475569;
    --color-text-muted: #94a3b8;
    --color-border: #e2e8f0;
    --shadow-lg: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
    --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.1);
  }
}

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

html {
  scroll-behavior: smooth;
}

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

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(15, 15, 15, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 2rem;
}

@media (prefers-color-scheme: light) {
  .nav {
    background: rgba(255, 255, 255, 0.8);
  }
}

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

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--color-text-primary);
  font-weight: 700;
  font-size: 1.5rem;
}

.nav-logo img {
  width: 36px;
  height: 36px;
}

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

.nav-links a {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

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

.nav-cta {
  background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
  color: white !important;
  padding: 0.5rem 1.25rem;
  border-radius: 8px;
  font-weight: 600;
}

.nav-cta:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8rem 2rem 4rem;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 50%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
              radial-gradient(circle at 70% 50%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
  animation: heroGlow 20s ease-in-out infinite;
}

@keyframes heroGlow {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  50% { transform: translate(-2%, 2%) rotate(5deg); }
}

.hero-content {
  max-width: 900px;
  text-align: center;
  position: relative;
  z-index: 1;
}

.hero-logo {
  width: 120px;
  height: 120px;
  margin-bottom: 2rem;
  animation: float 6s ease-in-out infinite;
}

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

.hero h1 {
  font-size: 4rem;
  font-weight: 800;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.5rem;
  color: var(--color-text-secondary);
  margin-bottom: 2rem;
  font-weight: 400;
}

.hero-description {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto 3rem;
}

.hero-badges {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: 50px;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.badge svg {
  width: 18px;
  height: 18px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  border-radius: 12px;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover {
  background: var(--color-bg-tertiary);
  transform: translateY(-2px);
}

/* Features Section */
.features {
  padding: 6rem 2rem;
  background: var(--color-bg-secondary);
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 4rem;
}

.section-header h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.section-header p {
  color: var(--color-text-secondary);
  font-size: 1.125rem;
}

.features-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.feature-card {
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 2rem;
  transition: all 0.3s;
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.feature-card p {
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* Screenshots Section */
.screenshots {
  padding: 6rem 2rem;
}

.screenshots-container {
  max-width: 1400px;
  margin: 0 auto;
}

.screenshots-tabs {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.tab-btn {
  padding: 0.75rem 1.5rem;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-text-secondary);
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}

.tab-btn.active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: white;
}

.tab-btn:hover:not(.active) {
  border-color: var(--color-accent);
  color: var(--color-text-primary);
}

.screenshots-gallery {
  display: none;
}

.screenshots-gallery.active {
  display: block;
}

.screenshot-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 1.5rem;
}

.screenshot-item {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  overflow: hidden;
  transition: all 0.3s;
  cursor: pointer;
}

.screenshot-item:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-lg);
}

.screenshot-item img {
  width: 100%;
  height: auto;
  display: block;
}

/* Section Header */
.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 3rem;
}

.section-header h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-header p {
  color: var(--color-text-secondary);
  font-size: 1.125rem;
}

/* Download Section */
.download {
  padding: 6rem 2rem;
  background: var(--color-bg-secondary);
}

.download-container {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}

.download-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-top: 3rem;
}

.download-card {
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 2rem;
  transition: all 0.3s;
}

.download-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-5px);
}

.download-card svg {
  width: 48px;
  height: 48px;
  margin-bottom: 1rem;
  color: var(--color-text-primary);
}

.download-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.download-card p {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  margin-bottom: 1.5rem;
}

.download-card .btn {
  width: 100%;
  justify-content: center;
}

/* Community Section */
.community {
  padding: 6rem 2rem;
}

.community-container {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}

.community-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.community-card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 1.5rem;
  transition: all 0.3s;
}

.community-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-3px);
}

.community-card img {
  width: 150px;
  height: 150px;
  border-radius: 12px;
  margin-bottom: 1rem;
}

.community-card h4 {
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.community-card p {
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

/* Footer */
.footer {
  padding: 3rem 2rem;
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color 0.2s;
}

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

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

/* Lightbox */
.lightbox {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.9);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.lightbox.active {
  display: flex;
}

.lightbox img {
  max-width: 100%;
  max-height: 90vh;
  border-radius: 8px;
  box-shadow: var(--shadow-lg);
}

.lightbox-close {
  position: absolute;
  top: 2rem;
  right: 2rem;
  background: none;
  border: none;
  color: white;
  font-size: 2rem;
  cursor: pointer;
  opacity: 0.7;
  transition: opacity 0.2s;
}

.lightbox-close:hover {
  opacity: 1;
}

/* Language Switcher */
.lang-switch {
  display: flex;
  gap: 0.5rem;
  margin-left: 1rem;
  padding-left: 1rem;
  border-left: 1px solid var(--color-border);
}

.lang-switch a {
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-size: 0.875rem;
}

.lang-switch a.active {
  background: var(--color-accent);
  color: white !important;
}

/* Responsive */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.5rem;
  }

  .hero-subtitle {
    font-size: 1.125rem;
  }

  .nav-links {
    display: none;
  }

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

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

  .download-cards {
    grid-template-columns: 1fr;
  }

  .section-header h2 {
    font-size: 2rem;
  }
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-in {
  animation: fadeInUp 0.6s ease-out forwards;
}