/* Root Variables */
:root {
  --primary-color: #6366f1;
  --primary-dark: #4f46e5;
  --secondary-color: #ec4899;
  --accent-color: #f59e0b;
  --text-primary: #1f2937;
  --text-secondary: #6b7280;
  --text-light: #9ca3af;
  --background: #ffffff;
  --surface: #f9fafb;
  --border: #e5e7eb;
  --shadow: rgba(0, 0, 0, 0.1);
  --gradient-primary: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --max-width: 1200px;
  --border-radius: 12px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Mode Variables */
@media (prefers-color-scheme: dark) {
  :root {
    --text-primary: #f9fafb;
    --text-secondary: #d1d5db;
    --text-light: #9ca3af;
    --background: #111827;
    --surface: #1f2937;
    --border: #374151;
    --shadow: rgba(0, 0, 0, 0.3);
  }
}

/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 0.5em;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }

p { margin-bottom: 1em; color: var(--text-secondary); }

/* Utility Classes */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-title {
  margin-bottom: 1rem;
}

.section-description {
  font-size: 1.25rem;
  max-width: 600px;
  margin: 0 auto;
}

/* Buttons */
.cta-button {
  display: inline-flex;
  align-items: center;
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  border: none;
  font-size: 1rem;
  line-height: 1.5;
}

.cta-button.large {
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

.cta-button.primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.cta-button.primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.4);
}

.cta-button.secondary {
  background: transparent;
  color: var(--text-primary);
  border: 2px solid var(--border);
}

.cta-button.secondary:hover {
  background: var(--surface);
  transform: translateY(-2px);
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  padding: 1rem 0;
  transition: var(--transition);
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

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

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
}

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

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
}

.mobile-menu-toggle span {
  width: 25px;
  height: 3px;
  background: var(--text-primary);
  transition: var(--transition);
}

/* Hero Section */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 100px;
  overflow: hidden;
}

.hero-bg-gradient {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-hero);
  opacity: 0.05;
  z-index: -1;
}

.hero-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  width: 100%;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-text {
  animation: fadeInUp 1s ease-out;
}

.hero-title {
  margin-bottom: 1.5rem;
  font-weight: 800;
}

.hero-description {
  font-size: 1.25rem;
  margin-bottom: 2.5rem;
  line-height: 1.7;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}

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

.stat-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary-color);
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Hero Visual */
.hero-visual {
  position: relative;
  animation: fadeInRight 1s ease-out 0.3s both;
}

.hero-image-container {
  position: relative;
  width: 100%;
  height: 600px;
}

.floating-card {
  position: absolute;
  width: 180px;
  background: white;
  border-radius: var(--border-radius);
  box-shadow: 0 10px 40px var(--shadow);
  overflow: hidden;
  transition: var(--transition);
  animation: float 6s ease-in-out infinite;
}

.floating-card:hover {
  transform: translateY(-10px) scale(1.05);
}

.floating-card img {
  width: 100%;
  height: 120px;
  object-fit: cover;
}

.card-content {
  padding: 1rem;
}

.card-content h4 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

.card-content p {
  font-size: 0.875rem;
  color: var(--text-light);
  margin: 0;
}

.card-1 {
  top: 20%;
  left: 10%;
  animation-delay: 0s;
}

.card-2 {
  top: 10%;
  right: 20%;
  animation-delay: -2s;
}

.card-3 {
  bottom: 30%;
  right: 10%;
  animation-delay: -4s;
}

.ai-indicators {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.ai-icon {
  width: 80px;
  height: 80px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 32px rgba(99, 102, 241, 0.3);
}

.ai-icon img {
  width: 40px;
  height: 40px;
  filter: brightness(0) invert(1);
}

.pulse {
  animation: pulse 2s infinite;
}

/* Features Section */
.features {
  padding: 8rem 0;
  background: var(--surface);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.feature-card {
  background: var(--background);
  padding: 2.5rem;
  border-radius: var(--border-radius);
  text-align: center;
  box-shadow: 0 4px 12px var(--shadow);
  transition: var(--transition);
  border: 1px solid var(--border);
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 32px var(--shadow);
}

.feature-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 1.5rem;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature-icon img {
  width: 40px;
  height: 40px;
  filter: brightness(0) invert(1);
}

.feature-card h3 {
  margin-bottom: 1rem;
  color: var(--text-primary);
}

/* How It Works Section */
.how-it-works {
  padding: 8rem 0;
}

.steps-container {
  display: flex;
  align-items: center;
  justify-content: center;
  max-width: 900px;
  margin: 0 auto;
  position: relative;
}

.step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  flex: 1;
  padding: 2rem;
}

.step-number {
  width: 80px;
  height: 80px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 800;
  color: white;
  margin-bottom: 1.5rem;
  box-shadow: 0 8px 32px rgba(99, 102, 241, 0.3);
}

.step-content h3 {
  margin-bottom: 1rem;
}

.step-connector {
  width: 100px;
  height: 2px;
  background: var(--gradient-primary);
  position: relative;
  margin: 3rem 0;
}

.step-connector::after {
  content: '';
  position: absolute;
  right: -8px;
  top: -6px;
  width: 0;
  height: 0;
  border-left: 10px solid var(--primary-color);
  border-top: 7px solid transparent;
  border-bottom: 7px solid transparent;
}

/* Genres Section */
.genres {
  padding: 8rem 0;
  background: var(--surface);
}

.genres-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.genre-card {
  position: relative;
  height: 200px;
  border-radius: var(--border-radius);
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition);
}

.genre-card:hover {
  transform: scale(1.05);
}

.genre-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.genre-card:hover img {
  transform: scale(1.1);
}

.genre-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
  color: white;
  padding: 2rem;
  text-align: center;
}

.genre-overlay h3 {
  margin-bottom: 0.5rem;
}

.genre-overlay p {
  margin: 0;
  opacity: 0.9;
}

/* CTA Section */
.cta-section {
  padding: 8rem 0;
  background: var(--gradient-primary);
  color: white;
  text-align: center;
}

.cta-content h2 {
  color: white;
  margin-bottom: 1rem;
}

.cta-content p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.25rem;
  margin-bottom: 2.5rem;
}

.cta-buttons {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.cta-section .cta-button.primary {
  background: white;
  color: var(--primary-color);
}

.cta-section .cta-button.primary:hover {
  background: var(--surface);
}

.app-badges span {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--border-radius);
  font-size: 0.875rem;
}

/* Footer */
.footer {
  padding: 4rem 0 2rem;
  background: var(--text-primary);
  color: white;
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 4rem;
  margin-bottom: 3rem;
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.8);
  margin-top: 1rem;
}

.footer-logo {
  height: 40px;
  filter: brightness(0) invert(1);
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.footer-section h4 {
  color: white;
  margin-bottom: 1rem;
  font-weight: 600;
}

.footer-section a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  display: block;
  margin-bottom: 0.5rem;
  transition: var(--transition);
}

.footer-section a:hover {
  color: white;
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  color: rgba(255, 255, 255, 0.6);
}

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

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-20px); }
}

@keyframes pulse {
  0% { box-shadow: 0 8px 32px rgba(99, 102, 241, 0.3); }
  50% { box-shadow: 0 8px 32px rgba(99, 102, 241, 0.6), 0 0 0 20px rgba(99, 102, 241, 0.1); }
  100% { box-shadow: 0 8px 32px rgba(99, 102, 241, 0.3); }
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }
  
  .mobile-menu-toggle {
    display: flex;
  }
  
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero-visual {
    order: -1;
  }
  
  .hero-image-container {
    height: 400px;
  }
  
  .floating-card {
    width: 140px;
  }
  
  .floating-card img {
    height: 100px;
  }
  
  .hero-buttons {
    justify-content: center;
  }
  
  .hero-stats {
    justify-content: center;
  }
  
  .steps-container {
    flex-direction: column;
    gap: 2rem;
  }
  
  .step-connector {
    width: 2px;
    height: 80px;
    margin: 1rem 0;
  }
  
  .step-connector::after {
    right: -6px;
    bottom: -8px;
    top: auto;
    transform: rotate(90deg);
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .footer-links {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 1rem;
  }
  
  .hero {
    padding-top: 120px;
  }
  
  .feature-card {
    padding: 2rem;
  }
  
  .step {
    padding: 1rem;
  }
  
  h1 { font-size: 2.5rem; }
  h2 { font-size: 2rem; }
  
  .hero-description {
    font-size: 1.125rem;
  }
  
  .section-description {
    font-size: 1.125rem;
  }
}