:root {
  --color-primary: #6a11cb;
  --color-primary-light: #8a2be2;
  --color-primary-dark: #5a0cb3;
  --color-secondary: #2575fc;
  --color-accent: #ff6b6b;
  --color-accent-light: #ff9e9e;
  
  /* Gradient Colors */
  --gradient-primary: linear-gradient(135deg, #6a11cb 0%, #2575fc 100%);
  --gradient-secondary: linear-gradient(135deg, #7d2ae8 0%, #ff6b6b 100%);
  --gradient-accent: linear-gradient(135deg, #8a2be2 0%, #2575fc 100%);
  --gradient-light: linear-gradient(135deg, rgba(106, 17, 203, 0.1) 0%, rgba(37, 117, 252, 0.1) 100%);
  
  /* White & Gray Scale */
  --color-white: #ffffff;
  --color-white-95: rgba(255, 255, 255, 0.95);
  --color-white-90: rgba(255, 255, 255, 0.9);
  --color-white-80: rgba(255, 255, 255, 0.8);
  --color-white-60: rgba(255, 255, 255, 0.6);
  --color-white-40: rgba(255, 255, 255, 0.4);
  --color-white-20: rgba(255, 255, 255, 0.2);
  --color-white-10: rgba(255, 255, 255, 0.1);
  
  --color-black: #000000;
  --color-gray-900: #1a1a2e;
  --color-gray-800: #2d3748;
  --color-gray-700: #4a5568;
  --color-gray-600: #718096;
  --color-gray-500: #a0aec0;
  --color-gray-400: #cbd5e0;
  --color-gray-300: #e2e8f0;
  --color-gray-200: #edf2f7;
  --color-gray-100: #f7fafc;
  --color-gray-50: #f8fafc;
  
  /* Functional Colors */
  --bg-primary: var(--color-white);
  --bg-secondary: var(--color-gray-50);
  --bg-tertiary: var(--color-gray-100);
  --bg-card: var(--color-white-95);
  --bg-overlay: rgba(26, 26, 46, 0.8);
  
  --text-primary: var(--color-gray-900);
  --text-secondary: var(--color-gray-700);
  --text-tertiary: var(--color-gray-600);
  --text-light: var(--color-white);
  --text-accent: var(--color-primary);
  
  --border-color: var(--color-gray-200);
  --border-light: var(--color-white-20);
  --border-hover: var(--color-primary-light);
  
  --accent-color: var(--color-primary);
  --accent-hover: var(--color-primary-dark);
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(106, 17, 203, 0.08);
  --shadow-md: 0 4px 12px rgba(106, 17, 203, 0.12);
  --shadow-lg: 0 8px 24px rgba(106, 17, 203, 0.16);
  --shadow-xl: 0 16px 40px rgba(106, 17, 203, 0.2);
  --shadow-neon: 0 0 20px rgba(138, 43, 226, 0.4);
  --shadow-neon-hover: 0 0 30px rgba(138, 43, 226, 0.6);
  
  /* Spacing - Reduced for desktop */
  --spacing-0: 0;
  --spacing-1: 0.15rem;
  --spacing-2: 0.3rem;
  --spacing-3: 0.5rem;
  --spacing-4: 0.75rem;
  --spacing-6: 1rem;
  --spacing-8: 1.25rem;
  --spacing-12: 1.75rem;
  --spacing-16: 2.5rem;
  --spacing-20: 3.5rem;
  --spacing-24: 4.5rem;
  --spacing-32: 6rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 20% 80%, rgba(106, 17, 203, 0.03) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(37, 117, 252, 0.03) 0%, transparent 50%);
  z-index: -1;
  pointer-events: none;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-6);
}

/* ===== HERO ===== */
.hero {
  position: relative;
  padding: var(--spacing-16) var(--spacing-6) var(--spacing-12);
  background: linear-gradient(135deg, var(--color-gray-50) 0%, var(--bg-secondary) 100%);
  overflow: hidden;
}

.hero-content {
  max-width: 1000px;
  margin: 0 auto;
  text-align: center;
  position: relative;
  z-index: 2;
}

.hero-title {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: var(--spacing-3);
  animation: slideInUp 0.8s ease-out;
}

.title-highlight {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline-block;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 750px;
  margin: var(--spacing-3) auto var(--spacing-4);
  line-height: 1.5;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: var(--spacing-4);
  margin: var(--spacing-4) 0 var(--spacing-6);
  flex-wrap: wrap;
}

.hero-stats span {
  font-size: 0.95rem;
  color: var(--text-secondary);
  background: var(--color-white);
  padding: var(--spacing-1) var(--spacing-4);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
}

.hero-stats strong {
  color: var(--color-primary);
  font-weight: 700;
}

.hero-cta {
  display: flex;
  gap: var(--spacing-3);
  justify-content: center;
  margin-bottom: var(--spacing-6);
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-2) var(--spacing-6);
  background: var(--gradient-primary);
  color: var(--color-white);
  border: none;
  border-radius: var(--radius-lg);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-md);
}

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

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-2) var(--spacing-6);
  background: var(--color-white);
  color: var(--color-primary);
  border: 2px solid var(--color-primary-light);
  border-radius: var(--radius-lg);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
}

.btn-secondary:hover {
  background: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.hero-interface-image {
  margin-top: var(--spacing-4);
}

.floating-interface {
  max-width: 90%;
  height: auto;
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  transition: transform 0.4s ease;
  background: transparent;
  display: block;
  margin: 0 auto;
}

.floating-interface:hover {
  transform: translateY(-4px);
}

.hero-background {
  position: absolute;
  inset: 0;
  overflow: hidden;
  z-index: 1;
}

.gradient-circle {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.12;
  animation: float 20s infinite ease-in-out;
}

.circle-1 {
  width: 250px;
  height: 250px;
  background: radial-gradient(circle, var(--color-primary) 0%, transparent 70%);
  top: 10%;
  left: 10%;
  animation-delay: 0s;
}

.circle-2 {
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, var(--color-secondary) 0%, transparent 70%);
  top: 50%;
  right: 10%;
  animation-delay: 5s;
}

.circle-3 {
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, var(--color-primary-light) 0%, transparent 70%);
  bottom: 20%;
  left: 20%;
  animation-delay: 10s;
}

.circle-4 {
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, var(--color-accent) 0%, transparent 70%);
  top: 20%;
  right: 30%;
  animation-delay: 15s;
}

@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-4px) scale(1.02); }
}

@keyframes slideInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== SCROLL CONTAINERS ===== */
.scroll-container {
  padding: var(--spacing-12) 0;
  min-height: auto;
  display: flex;
  align-items: center;
  background: var(--color-white);
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
  border-bottom: 1px solid var(--border-color);
}

.scroll-container.visible {
  opacity: 1;
  transform: translateY(0);
}

.scroll-container:nth-child(even) {
  background: var(--color-gray-50);
}

.scroll-content {
  display: flex;
  align-items: center;
  gap: var(--spacing-12);
  padding: var(--spacing-4) 0;
}

.scroll-text {
  flex: 1;
}

.scroll-text h2 {
  font-size: 2.4rem;
  font-weight: 800;
  margin-bottom: var(--spacing-4);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.scroll-points {
  list-style: none;
  padding: 0;
}

.scroll-points li {
  font-size: 1.05rem;
  padding: var(--spacing-2) 0;
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  color: var(--text-primary);
  border-bottom: 1px solid var(--color-gray-100);
}

.scroll-points li:last-child {
  border-bottom: none;
}

.scroll-points li i {
  color: var(--color-primary);
  font-size: 1.2rem;
  width: 24px;
  text-align: center;
}

.scroll-image {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.scroll-image img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-lg);
  transition: transform 0.4s ease;
}

.scroll-image img:hover {
  transform: scale(1.02);
}

/* Alternate layout for even containers */
.scroll-container:nth-child(even) .scroll-content {
  flex-direction: row-reverse;
}

/* ===== ONE PLATFORM ===== */
.one-platform {
  padding: var(--spacing-12) 0;
  background: var(--color-white);
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
  border-bottom: 1px solid var(--border-color);
}

.one-platform.visible {
  opacity: 1;
  transform: translateY(0);
}

.one-platform h2 {
  font-size: 2.4rem;
  font-weight: 800;
  text-align: center;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-8);
}

.platform-image-full {
  max-width: 1000px;
  margin: 0 auto;
}

.platform-image-full img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  display: block;
}

/* ===== DARK THEME SECTION (Next.js inspired) ===== */
.dark-theme-section {
  padding: var(--spacing-16) 0;
  background: #0a0a0a;
  color: var(--color-white);
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

.dark-theme-section.visible {
  opacity: 1;
  transform: translateY(0);
}

.dark-content {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.dark-content h2 {
  font-size: 2.8rem;
  font-weight: 800;
  margin-bottom: var(--spacing-3);
  background: linear-gradient(135deg, #ffffff 0%, #a0aec0 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.dark-content p {
  font-size: 1.2rem;
  color: var(--color-gray-400);
  margin-bottom: var(--spacing-6);
}

.dark-features {
  display: flex;
  justify-content: center;
  gap: var(--spacing-6);
  flex-wrap: wrap;
}

.dark-features span {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  font-size: 1rem;
  color: var(--color-gray-300);
  background: rgba(255,255,255,0.06);
  padding: var(--spacing-2) var(--spacing-4);
  border-radius: var(--radius-full);
  border: 1px solid rgba(255,255,255,0.08);
}

.dark-features span i {
  color: var(--color-primary-light);
}

/* ===== SELL CATEGORIES ===== */
.sell-categories {
  padding: var(--spacing-12) 0;
  background: var(--color-gray-50);
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.sell-categories.visible {
  opacity: 1;
  transform: translateY(0);
}

.sell-categories h2 {
  font-size: 2rem;
  font-weight: 800;
  text-align: center;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-8);
}

.sell-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-4);
}

.sell-card {
  background: var(--color-white);
  padding: var(--spacing-4);
  border-radius: var(--radius-xl);
  text-align: center;
  border: 1px solid var(--border-color);
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
}

.sell-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-lg);
}

.sell-card i {
  font-size: 1.8rem;
  color: var(--color-primary);
  margin-bottom: var(--spacing-2);
  display: block;
}

.sell-card strong {
  display: block;
  font-size: 1rem;
  margin-bottom: var(--spacing-1);
}

.sell-card span {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* ===== FAQ ===== */
.faq-section {
  padding: var(--spacing-12) 0;
  background: var(--color-white);
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.faq-section.visible {
  opacity: 1;
  transform: translateY(0);
}

.faq-section h2 {
  font-size: 2rem;
  font-weight: 800;
  text-align: center;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-8);
}

.faq-container {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-3);
}

.faq-item {
  background: var(--color-gray-50);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-color);
  overflow: hidden;
  transition: all var(--transition-base);
}

.faq-item:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-sm);
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-3) var(--spacing-4);
  cursor: pointer;
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-primary);
  background: var(--color-white);
  transition: background var(--transition-fast);
}

.faq-question:hover {
  background: var(--color-gray-100);
}

.faq-question i {
  color: var(--color-primary);
  transition: transform var(--transition-base);
}

.faq-item.active .faq-question i {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  padding: 0 var(--spacing-4);
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.2s ease;
  color: var(--text-secondary);
  line-height: 1.5;
  background: var(--color-gray-50);
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 var(--spacing-4) var(--spacing-3) var(--spacing-4);
}

/* ===== FINAL CTA ===== */
.final-cta {
  padding: var(--spacing-16) 0;
  background: var(--gradient-primary);
  text-align: center;
  color: var(--color-white);
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.final-cta.visible {
  opacity: 1;
  transform: translateY(0);
}

.final-cta h2 {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: var(--spacing-3);
}

.final-cta p {
  font-size: 1.05rem;
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto var(--spacing-4);
}

.final-cta .btn-primary {
  background: var(--color-white);
  color: var(--color-primary);
  box-shadow: var(--shadow-lg);
}

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

.final-cta .final-note {
  margin-top: var(--spacing-4);
  font-size: 0.9rem;
  opacity: 0.8;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .hero-title { font-size: 2.6rem; }
  .hero-stats { gap: var(--spacing-4); }
  .scroll-content { gap: var(--spacing-8); }
  .scroll-text h2 { font-size: 2.2rem; }
}

@media (max-width: 768px) {
  .hero { padding: var(--spacing-12) var(--spacing-4) var(--spacing-8); }
  .hero-title { font-size: 2rem; }
  .hero-subtitle { font-size: 1rem; }
  .hero-stats { gap: var(--spacing-2); }
  .hero-stats span { font-size: 0.85rem; padding: var(--spacing-1) var(--spacing-3); }
  .hero-cta { flex-direction: column; align-items: center; }
  .hero-cta button { width: 100%; max-width: 280px; justify-content: center; }
  
  .scroll-container {
    min-height: auto;
    padding: var(--spacing-8) 0;
  }
  
  .scroll-content {
    flex-direction: column !important;
    gap: var(--spacing-6);
    text-align: center;
  }
  
  .scroll-text h2 { font-size: 2rem; }
  .scroll-points li { justify-content: center; font-size: 1rem; }
  
  .one-platform h2 { font-size: 2rem; }
  
  .dark-content h2 { font-size: 2.4rem; }
  .dark-content p { font-size: 1.1rem; }
  .dark-features { gap: var(--spacing-4); }
  .dark-features span { font-size: 0.95rem; padding: var(--spacing-2) var(--spacing-4); }
  
  .sell-grid { grid-template-columns: repeat(2, 1fr); }
  
  .faq-question { font-size: 0.95rem; padding: var(--spacing-3) var(--spacing-4); }
  .faq-item.active .faq-answer { padding: 0 var(--spacing-4) var(--spacing-4) var(--spacing-4); }
  
  .final-cta h2 { font-size: 2rem; }
  .final-cta .btn-primary { width: 100%; max-width: 280px; justify-content: center; }
}

@media (max-width: 480px) {
  .sell-grid { grid-template-columns: 1fr; }
  .hero-stats { flex-direction: column; align-items: center; gap: var(--spacing-2); }
  .hero-stats span { width: 100%; max-width: 200px; }
  .scroll-points li { font-size: 0.9rem; flex-wrap: wrap; }
}

/* ===== UTILITY ===== */
*:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--color-gray-100);
}

::-webkit-scrollbar-thumb {
  background: var(--color-primary);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary-dark);
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .scroll-container, .one-platform, .dark-theme-section, .sell-categories, .faq-section, .final-cta {
    opacity: 1 !important;
    transform: none !important;
  }
}