/* Import modern typography from Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

/* CSS Variables for Premium Dark Theme */
:root {
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  
  --bg-primary: #080b11;
  --bg-secondary: #0f131c;
  --bg-tertiary: #171d2b;
  
  --color-primary: #6366f1;       /* Indigo */
  --color-primary-rgb: 99, 102, 241;
  --color-secondary: #a855f7;     /* Purple */
  --color-accent: #f43f5e;        /* Rose/Pink */
  --color-accent-rgb: 244, 63, 94;
  --color-success: #10b981;       /* Emerald */
  
  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-dark: #64748b;
  
  --border-color: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(99, 102, 241, 0.2);
  
  --glass-bg: rgba(15, 19, 28, 0.7);
  --glass-border: rgba(255, 255, 255, 0.06);
  --glass-blur: blur(16px);
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.15);
  --shadow-md: 0 10px 25px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px rgba(99, 102, 241, 0.15);
  
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base Styles */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.05) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(168, 85, 247, 0.05) 0%, transparent 40%);
  background-attachment: fixed;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

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

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

::-webkit-scrollbar-thumb:hover {
  background: rgba(99, 102, 241, 0.4);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.2;
}

p {
  color: var(--text-muted);
  font-weight: 400;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-fast);
}

/* Utility Classes */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.gradient-text {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 50%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline-block;
}

.glass-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-radius: 20px;
  padding: 2.5rem;
  box-shadow: var(--shadow-md);
  transition: var(--transition-normal);
}

.glass-card:hover {
  border-color: rgba(99, 102, 241, 0.25);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  transform: translateY(-4px);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.2);
  color: #a5b4fc;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.4rem 1rem;
  border-radius: 9999px;
  margin-bottom: 1.5rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Glowing Background Blobs */
.glow-blob {
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.12) 0%, transparent 70%);
  filter: blur(40px);
  z-index: -1;
  pointer-events: none;
}

.glow-blob-1 { top: -100px; left: -100px; }
.glow-blob-2 { top: 50%; right: -200px; }
.glow-blob-3 { bottom: -100px; left: 20%; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 1rem 2rem;
  border-radius: 12px;
  font-family: var(--font-heading);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
  border: none;
  font-size: 1rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: #fff;
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(99, 102, 241, 0.5), var(--shadow-glow);
  filter: brightness(1.1);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: #fff;
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 0.6rem 1.2rem;
  font-size: 0.9rem;
  border-radius: 8px;
}

/* Header & Navigation */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: rgba(8, 11, 17, 0.7);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--glass-border);
  transition: var(--transition-fast);
}

header.scrolled {
  background: rgba(8, 11, 17, 0.9);
  padding: 0.5rem 0;
  box-shadow: var(--shadow-sm);
}

nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  color: #fff;
}

.logo img {
  height: 40px;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  list-style: none;
}

.nav-links a {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.nav-links a:hover,
.nav-links a.active {
  color: #fff;
  text-shadow: 0 0 10px rgba(255, 255, 255, 0.3);
}

.nav-cta {
  display: flex;
  align-items: center;
}

/* Language Selector */
.lang-selector {
  position: relative;
  display: inline-flex;
  align-items: center;
  margin-right: 1.5rem;
}

.lang-selector select {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: #fff;
  padding: 0.5rem 2rem 0.5rem 1rem;
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  outline: none;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  transition: var(--transition-fast);
}

.lang-selector select:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.25);
}

.lang-selector select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 10px rgba(99, 102, 241, 0.2);
}

.lang-selector select option {
  background-color: var(--bg-secondary);
  color: var(--text-main);
}

.lang-selector::after {
  content: "";
  position: absolute;
  right: 0.75rem;
  top: 55%;
  transform: translateY(-50%);
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid var(--text-muted);
  pointer-events: none;
  transition: var(--transition-fast);
}

.lang-selector:hover::after {
  border-top-color: #fff;
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 21px;
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: 101;
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 3px;
  background-color: var(--text-main);
  border-radius: 3px;
  transition: var(--transition-fast);
}

/* Hero Section */
.hero {
  position: relative;
  padding: 10rem 0 6rem 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 4rem;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero-title {
  font-size: 3.75rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1.5rem;
}

.hero-desc {
  font-size: 1.2rem;
  margin-bottom: 2.5rem;
  max-width: 600px;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.hero-meta {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  color: var(--text-dark);
  font-size: 0.875rem;
}

.hero-meta-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.hero-meta-item svg {
  color: var(--color-primary);
  width: 16px;
  height: 16px;
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-image-wrapper {
  position: relative;
  width: 100%;
  max-width: 420px;
  border-radius: 24px;
  overflow: hidden;
  box-shadow: var(--shadow-lg), 0 0 50px rgba(99, 102, 241, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transform: perspective(1000px) rotateY(-10deg) rotateX(10deg);
  transition: var(--transition-normal);
}

.hero-image-wrapper:hover {
  transform: perspective(1000px) rotateY(-2deg) rotateX(2deg);
}

.hero-image-wrapper img {
  width: 100%;
  height: auto;
  display: block;
}

/* Features Section */
.features {
  padding: 6rem 0;
  position: relative;
}

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

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

.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2.5rem;
}

.feature-card {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.feature-icon-wrapper {
  width: 60px;
  height: 60px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15) 0%, rgba(168, 85, 247, 0.15) 100%);
  border: 1px solid rgba(99, 102, 241, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}

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

.feature-card h3 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  color: #fff;
}

.feature-card p {
  font-size: 0.95rem;
}

.feature-image-showcase {
  margin-top: 3rem;
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-md);
  text-align: center;
}

.feature-image-showcase img {
  width: 100%;
  max-height: 480px;
  object-fit: cover;
}

/* Split Image Columns */
.feature-showcase-row {
  margin-top: 4rem;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 4rem;
  align-items: center;
}

.feature-showcase-row.reverse {
  grid-template-columns: 1.2fr 1fr;
}

.showcase-visual {
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-md);
}

.showcase-visual img {
  width: 100%;
  display: block;
}

/* Requirements Section */
.requirements {
  padding: 6rem 0;
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  position: relative;
}

.req-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 4rem;
  align-items: center;
}

.req-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  list-style: none;
}

.req-item {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
}

.req-checkbox {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 6px;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: var(--color-success);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 0.2rem;
}

.req-checkbox.warning {
  background: rgba(244, 63, 94, 0.1);
  border-color: rgba(244, 63, 94, 0.3);
  color: var(--color-accent);
}

.req-info h4 {
  font-size: 1.15rem;
  margin-bottom: 0.25rem;
  color: #fff;
}

.req-info p {
  font-size: 0.9rem;
}

.req-highlight {
  text-align: center;
  padding: 3rem 2.5rem;
  background: linear-gradient(135deg, rgba(30, 27, 75, 0.6) 0%, rgba(15, 23, 42, 0.6) 100%);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: 24px;
}

.req-highlight-num {
  font-size: 4rem;
  font-weight: 800;
  line-height: 1;
  font-family: var(--font-heading);
  margin-bottom: 0.5rem;
}

.req-highlight-label {
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

/* Languages Section */
.languages {
  padding: 6rem 0;
  position: relative;
}

.lang-search-wrapper {
  max-width: 500px;
  margin: 0 auto 3rem auto;
  position: relative;
}

.lang-search {
  width: 100%;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.1rem 1.5rem 1.1rem 3.5rem;
  color: #fff;
  font-family: var(--font-body);
  font-size: 1rem;
  outline: none;
  transition: var(--transition-fast);
}

.lang-search:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 15px rgba(99, 102, 241, 0.15);
}

.lang-search-icon {
  position: absolute;
  left: 1.25rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-dark);
  pointer-events: none;
}

.lang-tabs {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.lang-tab {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 0.6rem 1.5rem;
  border-radius: 9999px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
}

.lang-tab:hover {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.2);
}

.lang-tab.active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.lang-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.lang-item {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 0.75rem 1rem;
  text-align: center;
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--text-main);
  transition: var(--transition-fast);
}

.lang-item:hover {
  background: rgba(99, 102, 241, 0.1);
  border-color: rgba(99, 102, 241, 0.3);
  transform: translateY(-2px);
}

.lang-item.low-quality {
  border-style: dashed;
  opacity: 0.85;
}

.lang-no-results {
  text-align: center;
  color: var(--text-muted);
  padding: 3rem;
  display: none;
  font-style: italic;
}

/* Sideload & Model Download Guide */
.sideload {
  padding: 6rem 0;
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
}

.sideload-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.5rem;
  margin-top: 3rem;
}

.step-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.step-num {
  font-family: var(--font-heading);
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1;
  color: rgba(99, 102, 241, 0.15);
  position: absolute;
  top: -1.5rem;
  right: 1.5rem;
}

.step-card h3 {
  font-size: 1.3rem;
  color: #fff;
}

.step-card p {
  font-size: 0.9rem;
}

/* CTA Section */
.download-cta-section {
  padding: 8rem 0;
  text-align: center;
  position: relative;
}

.download-box {
  max-width: 800px;
  margin: 0 auto;
}

.download-box h2 {
  font-size: 3rem;
  margin-bottom: 1.5rem;
}

.download-box p {
  font-size: 1.15rem;
  margin-bottom: 2.5rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

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

/* Footer */
footer {
  background-color: #04060b;
  border-top: 1px solid var(--border-color);
  padding: 4rem 0 2rem 0;
  color: var(--text-dark);
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 4rem;
  margin-bottom: 3rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.footer-brand-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: #fff;
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
}

.footer-brand-title img {
  height: 30px;
}

.footer-brand p {
  font-size: 0.85rem;
  max-width: 280px;
}

.footer-links-col {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.footer-links-col h4 {
  color: #fff;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-links-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links-col a {
  color: var(--text-muted);
}

.footer-links-col a:hover {
  color: #fff;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.03);
  padding-top: 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-heart {
  color: var(--color-accent);
  display: inline-block;
  animation: heartBeat 1.5s infinite;
}

@keyframes heartBeat {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.15); }
}

/* Animations */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s cubic-bezier(0.15, 0.85, 0.45, 1);
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive Breakpoints */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 3rem;
  }
  
  .hero-grid,
  .features-grid,
  .req-grid,
  .feature-showcase-row,
  .feature-showcase-row.reverse {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .hero-visual {
    order: -1;
  }
  
  .hero-content {
    align-items: center;
    text-align: center;
  }
  
  .hero-ctas {
    justify-content: center;
  }
  
  .hero-image-wrapper {
    transform: none;
  }
  
  .hero-image-wrapper:hover {
    transform: translateY(-5px);
  }
  
  .sideload-steps {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .footer-brand {
    grid-column: span 2;
  }
}

@media (max-width: 768px) {
  header {
    background: rgba(8, 11, 17, 0.95);
  }
  
  .menu-toggle {
    display: flex;
  }
  
  .nav-links {
    position: fixed;
    top: 80px;
    left: 0;
    width: 100%;
    height: calc(100vh - 80px);
    background-color: var(--bg-primary);
    flex-direction: column;
    padding: 3rem 2rem;
    gap: 2rem;
    transform: translateX(100%);
    transition: var(--transition-normal);
    border-top: 1px solid var(--border-color);
  }
  
  .nav-links.open {
    transform: translateX(0);
  }
  
  .menu-toggle.open span:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
  }
  
  .menu-toggle.open span:nth-child(2) {
    opacity: 0;
  }
  
  .menu-toggle.open span:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .section-header h2 {
    font-size: 2rem;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .footer-brand {
    grid-column: span 1;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 1.25rem;
  }
  
  .hero {
    padding-top: 8rem;
  }
  
  .hero-title {
    font-size: 2.2rem;
  }
  
  .hero-ctas .btn {
    width: 100%;
  }
  
  .download-buttons .btn {
    width: 100%;
  }
}