/* Nebula Intelligence Website - Main Styles */
/* Inspired by AIris Nebula Theme */

/* CSS Variables */
:root {
  /* Nebula Theme Colors */
  --bg-primary: #0b0118;
  --bg-secondary: #1a0b2e;
  --bg-tertiary: #2d1b4e;
  --text-primary: #e8d5ff;
  --text-secondary: #c084fc;
  --text-muted: #a855f7;
  --border-color: #6366f1;
  --accent-primary: #8b5cf6;
  --accent-secondary: #ec4899;
  --accent-tertiary: #06d6a0;
  --success: #06d6a0;
  --warning: #ffd60a;
  --error: #ff006e;

  /* Typography - Modern, readable fonts with Turkish character support */
  --font-primary: "Poppins", -apple-system, BlinkMacSystemFont, "Segoe UI",
    "Roboto", "Helvetica Neue", Arial, sans-serif;
  --font-secondary: "Roboto", -apple-system, BlinkMacSystemFont, "Segoe UI",
    "Helvetica Neue", Arial, sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", Monaco, "Cascadia Code",
    "Roboto Mono", Consolas, "Courier New", monospace;

  /* Typography Scale - Modern, readable font sizes */
  --font-size-xs: 0.75rem; /* 12px */
  --font-size-sm: 0.875rem; /* 14px */
  --font-size-base: 1rem; /* 16px */
  --font-size-lg: 1.125rem; /* 18px */
  --font-size-xl: 1.25rem; /* 20px */
  --font-size-2xl: 1.5rem; /* 24px */
  --font-size-3xl: 1.875rem; /* 30px */
  --font-size-4xl: 2.25rem; /* 36px */
  --font-size-5xl: 3rem; /* 48px */
  --font-size-6xl: 3.75rem; /* 60px */

  /* Font Weights */
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;

  /* Line Heights */
  --line-height-tight: 1.25;
  --line-height-snug: 1.375;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;
  --line-height-loose: 2;

  /* Layout */
  --navbar-height: 80px;
  --border-radius: 12px;
  --border-radius-lg: 20px;
  --container-max-width: 1400px;

  /* Shadows */
  --shadow: 0 4px 20px rgba(139, 92, 246, 0.15);
  --shadow-lg: 0 20px 40px rgba(139, 92, 246, 0.25);
  --glow: 0 0 30px rgba(139, 92, 246, 0.4);

  /* Transitions */
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);

  /* Performance optimized transitions for navbar */
  --navbar-transition: backdrop-filter 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

/* Prevent horizontal scroll on mobile */
@media (max-width: 768px) {
  /* Apply max-width to content elements, but exclude gallery */
  *:not(.gallery-container):not(.gallery-track):not(.gallery-item):not(.feature-demo):not(.demo-image):not(.demo-conversation) {
    max-width: 100%;
  }
  
  img, video, iframe {
    max-width: 100%;
    height: auto;
  }
  
  /* Ensure gallery elements maintain their proper sizing */
  .gallery-container {
    max-width: 100vw !important;
  }
  
  .gallery-track {
    max-width: none !important;
  }
  
  .gallery-item {
    max-width: 100vw !important;
  }
}

/* Typography improvements for better readability */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-primary);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--text-primary);
}

p {
  font-family: var(--font-secondary);
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  color: var(--text-primary);
}

/* Code and monospace text */
code,
pre,
kbd,
samp {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  /* Offset for fixed navbar when scrolling to sections */
  scroll-padding-top: calc(var(--navbar-height) + 2rem);
}

body {
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  overflow-x: hidden;
  /* Better text rendering */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  /* Font loading optimization */
  font-display: swap;
  /* Prevent horizontal scroll on mobile */
  max-width: 100vw;
  position: relative;
}

/* Cosmic Background System - Performance Optimized */
.cosmic-background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -3;
  background: 
    /* Simplified nebula for better performance */ radial-gradient(
      ellipse 600px 400px at 35% 25%,
      rgba(139, 92, 246, 0.4) 0%,
      rgba(139, 92, 246, 0.2) 35%,
      transparent 65%
    ),
    radial-gradient(
      ellipse 500px 600px at 70% 60%,
      rgba(99, 102, 241, 0.3) 0%,
      rgba(99, 102, 241, 0.15) 40%,
      transparent 70%
    ),
    /* Base gradient */
      linear-gradient(
        135deg,
        #0b0118 0%,
        #1a0b2e 25%,
        #2d1b4e 50%,
        #1a0b2e 75%,
        #0b0118 100%
      );
  /* Performance optimizations */
  will-change: transform;
  transform: translate3d(0, 0, 0);
  animation: nebulaFloatOptimized 30s ease-in-out infinite;
}

.star-field {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
  background-image:
    /* Simplified stars for better performance */ radial-gradient(
      1px 1px at 20px 30px,
      rgba(255, 255, 255, 0.5) 50%,
      transparent 51%
    ),
    radial-gradient(
      1px 1px at 80px 120px,
      rgba(255, 255, 255, 0.4) 50%,
      transparent 51%
    ),
    radial-gradient(
      2px 2px at 60px 40px,
      rgba(255, 255, 255, 0.6) 50%,
      transparent 51%
    ),
    radial-gradient(
      2px 2px at 140px 80px,
      rgba(255, 255, 255, 0.5) 50%,
      transparent 51%
    );
  background-size: 300px 300px;
  /* Performance optimizations */
  will-change: opacity;
  transform: translate3d(0, 0, 0);
  animation: starTwinkleOptimized 15s ease-in-out infinite;
}

.nebula-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background: radial-gradient(
    circle at 50% 50%,
    rgba(139, 92, 246, 0.08) 0%,
    transparent 50%
  );
  /* Performance optimizations */
  will-change: opacity;
  transform: translate3d(0, 0, 0);
  animation: nebulaDepthOptimized 45s ease-in-out infinite;
}

/* Performance Optimized Animations */
@keyframes nebulaFloatOptimized {
  0%, 100% {
    transform: translate3d(0, 0, 0);
    opacity: 0.7;
  }
  50% {
    transform: translate3d(3px, -3px, 0);
    opacity: 0.9;
  }
}

@keyframes starTwinkleOptimized {
  0%, 100% {
    opacity: 0.6;
  }
  50% {
    opacity: 1;
  }
}

@keyframes nebulaDepthOptimized {
  0%, 100% {
    opacity: 0.5;
  }
  50% {
    opacity: 0.8;
  }
}

/* Legacy animations - keep for compatibility */
@keyframes nebulaFloat {
  0%, 100% {
    transform: translateX(0px) translateY(0px) rotate(0deg);
    opacity: 0.8;
  }
  25% {
    transform: translateX(-8px) translateY(-12px) rotate(0.8deg);
    opacity: 0.95;
  }
  50% {
    transform: translateX(5px) translateY(-5px) rotate(-0.3deg);
    opacity: 0.75;
  }
  75% {
    transform: translateX(-3px) translateY(8px) rotate(0.5deg);
    opacity: 0.9;
  }
}

@keyframes starTwinkle {
  0%, 100% {
    opacity: 1;
    filter: brightness(1);
  }
  25% {
    opacity: 0.85;
    filter: brightness(1.15);
  }
  50% {
    opacity: 0.95;
    filter: brightness(0.9);
  }
  75% {
    opacity: 0.8;
    filter: brightness(1.2);
  }
}

@keyframes nebulaDepth {
  0%, 100% {
    transform: scale(1) rotate(0deg);
    opacity: 0.6;
  }
  30% {
    transform: scale(1.02) rotate(-0.4deg);
    opacity: 0.8;
  }
  60% {
    transform: scale(0.98) rotate(0.6deg);
    opacity: 0.65;
  }
  90% {
    transform: scale(1.01) rotate(-0.2deg);
    opacity: 0.75;
  }
}

/* Performance optimizations during scroll */
body.scrolling .cosmic-background,
body.scrolling .star-field,
body.scrolling .nebula-overlay {
  animation-play-state: paused;
}

/* Reduce blur effects during scrolling for better performance */
body.scrolling .navbar {
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
}

body.scrolling .gallery-container {
  backdrop-filter: blur(10px);
}

/* Disable animations for users who prefer reduced motion */
@media (prefers-reduced-motion: reduce) {
  .cosmic-background,
  .star-field,
  .nebula-overlay {
    animation: none;
  }
  
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Mobile performance optimizations */
@media (max-width: 768px) {
  .cosmic-background {
    animation-duration: 45s; /* Slower on mobile */
  }
  
  .star-field {
    animation-duration: 20s;
  }
  
  .nebula-overlay {
    animation-duration: 60s;
  }
}

/* Container */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--navbar-height);
  /* Completely transparent background - only blur effect */
  background: transparent;
  /* Pure blur effect only - no color modifications */
  backdrop-filter: blur(25px);
  /* Fallback for browsers that don't support backdrop-filter */
  -webkit-backdrop-filter: blur(25px);
  border-bottom: none;
  z-index: 1000;
  transition: var(--navbar-transition);
  /* Ensure proper stacking context */
  isolation: isolate;
  /* Performance optimizations */
  will-change: transform, backdrop-filter;
  transform: translate3d(0, 0, 0);
  /* Optimize compositing layer */
  contain: layout style paint;
}

/* Browser compatibility fallback for older browsers */
@supports not (backdrop-filter: blur(25px)) {
  .navbar {
    /* Fallback background for browsers without backdrop-filter support */
    background: rgba(13, 2, 33, 0.8);
  }

  .navbar.scrolled {
    background: rgba(13, 2, 33, 0.9);
  }
}

.navbar.scrolled {
  /* Still completely transparent when scrolled - only blur effect */
  background: transparent;
  /* Enhanced blur when scrolled - no color modifications */
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
  box-shadow: none;
  border-bottom: none;
  /* Performance optimization: will-change for smooth animations */
  will-change: backdrop-filter;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 2rem;
  gap: 2rem;
  position: relative;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-primary);
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-2xl);
  /* Enhanced text contrast for transparent background */
  color: var(--text-primary);
  text-decoration: none;
  /* Add text shadow for better readability over transparent background */
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
  transition: transform 0.3s ease, text-shadow 0.3s ease;
  cursor: pointer;
  flex-shrink: 0;
}

.nav-brand:hover {
  transform: translateY(-1px);
  text-shadow: 0 2px 5px rgba(0, 0, 0, 0.4);
}

.nav-logo {
  height: 45px;
  width: auto;
  border-radius: 8px;
}

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

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  flex-shrink: 0;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-family: var(--font-primary);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-lg);
  transition: color 0.3s ease, text-shadow 0.3s ease;
  position: relative;
  /* Enhanced text contrast for transparent background */
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
  /* Enhanced text shadow on hover for better contrast */
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(
    90deg,
    var(--accent-primary),
    var(--accent-secondary)
  );
  transition: width 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Language Switcher */
.language-switcher {
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid rgba(139, 92, 246, 0.3);
  border-radius: var(--border-radius);
  color: var(--text-primary);
  font-family: var(--font-primary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  padding: 0.5rem 1rem;
  cursor: pointer;
  transition: var(--transition);
  backdrop-filter: blur(10px);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
  position: relative;
  overflow: hidden;
}

.language-switcher:hover {
  background: rgba(139, 92, 246, 0.2);
  border-color: rgba(139, 92, 246, 0.5);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(139, 92, 246, 0.2);
}

.language-switcher:active {
  transform: translateY(0);
}

.language-switcher:focus {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid rgba(139, 92, 246, 0.2);
  border-radius: var(--border-radius);
  cursor: pointer;
  gap: 3px;
  padding: 10px;
  min-width: 44px;
  min-height: 44px;
  justify-content: center;
  align-items: center;
  transition: var(--transition);
  /* Enhanced mobile touch support */
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  user-select: none;
  -webkit-user-select: none;
  position: relative;
  z-index: 1001;
}

.mobile-menu-toggle:hover {
  background: rgba(139, 92, 246, 0.2);
  border-color: rgba(139, 92, 246, 0.4);
  transform: translateY(-1px);
}

.mobile-menu-toggle:focus {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
}

.mobile-menu-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
  /* Enhanced visibility and contrast for mobile */
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
  display: block;
  transform-origin: center;
}

/* Button Styles */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: var(--border-radius);
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

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

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

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 2px solid rgba(139, 92, 246, 0.3);
}

.btn-secondary:hover {
  background: rgba(139, 92, 246, 0.1);
  border-color: var(--accent-primary);
}

.btn-large {
  padding: 1rem 2rem;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--navbar-height);
  position: relative;
}

.hero-container {
  display: flex;
  justify-content: center;
  align-items: center;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

.hero-content {
  z-index: 2;
  text-align: center;
  max-width: 800px;
  width: 100%;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid rgba(139, 92, 246, 0.3);
  border-radius: 2rem;
  font-family: var(--font-primary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--accent-primary);
  margin-bottom: 2rem;
}

.hero-title {
  font-family: var(--font-primary);
  font-size: var(--font-size-6xl);
  font-weight: var(--font-weight-extrabold);
  line-height: var(--line-height-tight);
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

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

.hero-description {
  font-family: var(--font-secondary);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-normal);
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  line-height: var(--line-height-relaxed);
}

.scroll-indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  margin-top: 4rem;
  margin-bottom: 2rem;
  cursor: pointer;
  transition: var(--transition);
}

.scroll-indicator:hover {
  transform: translateY(-2px);
}

.scroll-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1px;
  opacity: 0.8;
}

.scroll-arrow {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(
    135deg,
    rgba(139, 92, 246, 0.2),
    rgba(168, 85, 247, 0.2)
  );
  border: 1px solid rgba(139, 92, 246, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-primary);
  font-size: 1.2rem;
  animation: scrollBounce 2s ease-in-out infinite;
  backdrop-filter: blur(10px);
}

.scroll-arrow:hover {
  background: linear-gradient(
    135deg,
    rgba(139, 92, 246, 0.3),
    rgba(168, 85, 247, 0.3)
  );
  border-color: rgba(139, 92, 246, 0.5);
  box-shadow: 0 0 20px rgba(139, 92, 246, 0.3);
}

@keyframes scrollBounce {
  0%,
  20%,
  50%,
  80%,
  100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(-8px);
  }
  60% {
    transform: translateY(-4px);
  }
}

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

.stat {
  text-align: center;
}

.stat-number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent-primary);
  display: block;
}

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

/* Section Styles */
.section-title {
  font-family: var(--font-primary);
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  text-align: center;
  margin-bottom: 1rem;
  line-height: var(--line-height-tight);
  letter-spacing: -0.01em;
  background: linear-gradient(
    135deg,
    var(--text-primary),
    var(--accent-primary)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-description {
  font-family: var(--font-secondary);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-normal);
  color: var(--text-secondary);
  text-align: center;
  max-width: 600px;
  margin: 0 auto 3rem;
  line-height: var(--line-height-relaxed);
}

.section-header {
  margin-bottom: 2rem;
}

/* Features Section */
.features {
  padding: 3rem 0;
  position: relative;
}

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

.feature-card {
  background: linear-gradient(
    135deg,
    rgba(26, 11, 46, 0.6),
    rgba(45, 27, 78, 0.4)
  );
  backdrop-filter: blur(20px);
  border: 1px solid rgba(139, 92, 246, 0.2);
  border-radius: var(--border-radius-lg);
  padding: 2rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--accent-primary),
    transparent
  );
  opacity: 0;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-8px);
  border-color: rgba(139, 92, 246, 0.4);
  box-shadow: var(--glow);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--border-radius);
  background: linear-gradient(
    135deg,
    var(--accent-primary),
    var(--accent-secondary)
  );
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  font-size: 1.5rem;
  color: white;
}

.feature-title {
  font-family: var(--font-primary);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  margin-bottom: 1rem;
  color: var(--text-primary);
  line-height: var(--line-height-snug);
}

.feature-description {
  font-family: var(--font-secondary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: var(--line-height-relaxed);
}

.feature-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.tag {
  padding: 0.25rem 0.75rem;
  background: rgba(139, 92, 246, 0.1);
  color: var(--accent-primary);
  border-radius: 1rem;
  font-family: var(--font-primary);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
}

/* Horizontal Features Gallery */
.features-horizontal {
  max-width: 100vw;
  margin: 2rem auto;
  position: relative;
}

.gallery-container {
  overflow: hidden;
  border-radius: var(--border-radius-lg);
  background: linear-gradient(
    135deg,
    rgba(26, 11, 46, 0.3),
    rgba(45, 27, 78, 0.2)
  );
  backdrop-filter: blur(20px);
  border: 1px solid rgba(139, 92, 246, 0.2);
  min-height: 700px;
  width: 100vw;
  margin-left: calc(-50vw + 50%);
  margin-right: calc(-50vw + 50%);
  position: relative;
  /* Performance optimizations */
  contain: layout style paint;
  isolation: isolate;
  /* Modern scroll-snap support */
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
}

.gallery-track {
  display: flex;
  transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  gap: 0;
  width: calc(
    5 * 100vw
  ); /* Dynamically set by JavaScript - 5 slides * viewport width */
  will-change: transform;
  backface-visibility: hidden;
  transform-style: preserve-3d;
  /* Advanced performance optimizations */
  contain: layout style paint;
  transform-origin: 0 0;
}

/* Disable transitions during active dragging */
.gallery-track.dragging {
  transition: none;
  /* Enable momentum scrolling optimizations */
  overscroll-behavior-x: none;
  touch-action: pan-y pinch-zoom;
}

/* Ultra-smooth transition for programmatic changes */
.gallery-track.smooth-transition {
  transition: transform 0.7s cubic-bezier(0.165, 0.84, 0.44, 1);
}

/* Momentum-specific ultra-smooth transition - Natural deceleration curve */
.gallery-track.momentum-transition {
  transition: transform 1s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* Page indicators with smooth hover effects */
.page-indicator {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
}

.page-indicator:hover {
  transform: scale(1.2);
  opacity: 0.8;
}

.gallery-item {
  /* Each item takes full viewport width for proper carousel behavior */
  min-width: 100vw; /* Full viewport width */
  width: 100vw; /* Full viewport width */
  flex-shrink: 0;
  padding: 5rem;
  box-sizing: border-box;
  /* Modern scroll-snap alignment */
  scroll-snap-align: start;
  scroll-snap-stop: always;
}

.feature-demo {
  display: grid;
  grid-template-columns: 1000px 1fr;
  gap: 4rem;
  align-items: center;
  max-width: 100%;
  margin: 0 auto;
  height: 100%;
}

/* Responsive adjustment for medium screens */
@media (max-width: 1400px) {
  .gallery-item {
    padding: 4rem 3rem;
  }

  .feature-demo {
    grid-template-columns: 800px 1fr;
    gap: 3rem;
  }

  .demo-image {
    width: 800px;
    margin-left: 2rem;
  }

  .image-placeholder {
    width: 800px;
    height: 450px;
    min-width: 800px;
    min-height: 450px;
  }
}

.demo-image {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-left: 3rem;
  width: 1000px;
  flex-shrink: 0;
}

.image-placeholder {
  width: 1000px;
  height: 562.5px;
  min-width: 1000px;
  min-height: 562.5px;
  flex-shrink: 0;
  background: linear-gradient(
    135deg,
    rgba(139, 92, 246, 0.1),
    rgba(168, 85, 247, 0.1)
  );
  border: 2px dashed rgba(139, 92, 246, 0.3);
  border-radius: var(--border-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  margin-bottom: 0;
}

.image-placeholder:hover {
  border-color: rgba(139, 92, 246, 0.5);
  background: linear-gradient(
    135deg,
    rgba(139, 92, 246, 0.15),
    rgba(168, 85, 247, 0.15)
  );
  transform: scale(1.02);
}

.image-placeholder span {
  color: var(--text-primary);
  font-weight: 600;
  font-size: 1.5rem;
  text-align: center;
  padding: 1.5rem;
}

.demo-conversation {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  min-width: 0;
  flex: 1;
}

.conversation-bubble {
  padding: 1.2rem 1.5rem;
  border-radius: var(--border-radius-lg);
  max-width: 350px;
  position: relative;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.conversation-bubble.user {
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid rgba(139, 92, 246, 0.2);
  align-self: flex-start;
}

.conversation-bubble.ai {
  background: rgba(236, 72, 153, 0.1);
  border: 1px solid rgba(236, 72, 153, 0.2);
  align-self: flex-end;
}

.bubble-sender {
  font-weight: 600;
  font-size: 0.85rem;
  display: block;
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.conversation-bubble.user .bubble-sender {
  color: var(--accent-primary);
}

.conversation-bubble.ai .bubble-sender {
  color: var(--accent-secondary);
}

.conversation-bubble p {
  margin: 0;
  font-size: 1rem;
  line-height: 1.5;
  color: var(--text-primary);
}

.conversation-bubble.user p {
  font-style: italic;
}

.conversation-bubble.ai p {
  font-weight: 500;
}

/* Gallery Pagination */
.gallery-pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.75rem;
  position: absolute;
  bottom: 1rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
}

.page-indicator {
  width: 12px;
  height: 3px;
  background-color: rgba(139, 92, 246, 0.3);
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
}

.page-indicator:hover {
  width: 24px;
  background-color: rgba(139, 92, 246, 0.6);
  transform: scaleY(1.2);
}

.page-indicator.active {
  width: 24px;
  background-color: var(--accent-primary);
  box-shadow: 0 0 10px rgba(139, 92, 246, 0.4);
}

/* Security Section */
.security-section {
  padding: 6rem 0;
  background: linear-gradient(
    180deg,
    transparent,
    rgba(26, 11, 46, 0.3),
    transparent
  );
}

.security-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 3rem;
  margin-top: 3rem;
}

.security-feature {
  text-align: center;
  padding: 2rem;
  background: linear-gradient(
    135deg,
    rgba(26, 11, 46, 0.6),
    rgba(45, 27, 78, 0.4)
  );
  backdrop-filter: blur(20px);
  border: 1px solid rgba(139, 92, 246, 0.2);
  border-radius: var(--border-radius-lg);
  transition: all 0.3s ease;
}

.security-feature:hover {
  transform: translateY(-5px);
  border-color: rgba(139, 92, 246, 0.4);
  box-shadow: 0 10px 30px rgba(139, 92, 246, 0.2);
}

.security-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 1.5rem;
  background: linear-gradient(
    135deg,
    var(--accent-primary),
    var(--accent-secondary)
  );
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: white;
}

.security-feature h3 {
  color: var(--text-primary);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.security-feature p {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Simple Features Grid */
.features-grid-simple {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-top: 3rem;
}

.feature-simple {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 1rem 1.5rem;
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid rgba(139, 92, 246, 0.2);
  border-radius: var(--border-radius);
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
}

.feature-simple:hover {
  transform: translateY(-2px);
  background: rgba(139, 92, 246, 0.15);
  border-color: rgba(139, 92, 246, 0.3);
}

.feature-simple i {
  color: var(--accent-primary);
  font-size: 1.2rem;
}

.feature-simple span {
  font-weight: 600;
  color: var(--text-primary);
}

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

/* Technology Section */
.technology {
  padding: 6rem 0;
  background: linear-gradient(
    180deg,
    transparent,
    rgba(26, 11, 46, 0.3),
    transparent
  );
}

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

.tech-features {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  margin-top: 2rem;
}

.tech-feature {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

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

.tech-feature-content h4 {
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.tech-feature-content p {
  color: var(--text-secondary);
  line-height: 1.6;
}

.tech-stack {
  background: linear-gradient(
    135deg,
    rgba(26, 11, 46, 0.6),
    rgba(45, 27, 78, 0.4)
  );
  backdrop-filter: blur(20px);
  border: 1px solid rgba(139, 92, 246, 0.2);
  border-radius: var(--border-radius-lg);
  padding: 2rem;
}

.tech-stack h3 {
  text-align: center;
  margin-bottom: 2rem;
  color: var(--text-primary);
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.tech-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: rgba(139, 92, 246, 0.1);
  border-radius: var(--border-radius);
  color: var(--text-primary);
  font-weight: 500;
}

.tech-item i {
  font-size: 1.5rem;
  color: var(--accent-primary);
}

/* Demo Section */
.demo {
  padding: 8rem 0;
  text-align: center;
}

.demo-container {
  display: flex;
  justify-content: center;
  align-items: center;
  max-width: 1000px;
  margin: 0 auto;
}

.demo-video {
  position: relative;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 800px;
}

.video-placeholder {
  aspect-ratio: 16/9;
  background: linear-gradient(
    135deg,
    rgba(26, 11, 46, 0.9),
    rgba(45, 27, 78, 0.8),
    rgba(26, 11, 46, 0.9)
  );
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid rgba(139, 69, 255, 0.2);
}

.video-placeholder:hover {
  transform: scale(1.02);
}

.play-button {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: linear-gradient(
    135deg,
    var(--accent-primary),
    var(--accent-secondary)
  );
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: white;
  margin-bottom: 2rem;
  transition: var(--transition);
  box-shadow: 0 8px 32px rgba(139, 69, 255, 0.3);
}

.play-button:hover {
  transform: scale(1.1);
  box-shadow: var(--glow);
}

.video-overlay {
  text-align: center;
}

.video-overlay h3 {
  font-size: 2rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
  font-weight: 600;
}

.video-overlay p {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

.demo-features h3 {
  margin-bottom: 2rem;
  color: var(--text-primary);
}

.demo-checklist {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.demo-check-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  color: var(--text-secondary);
}

.demo-check-item i {
  color: var(--accent-tertiary);
  font-size: 1.125rem;
}

/* Screenshots Section */
.screenshots {
  padding: 4rem 0;
}

.screenshots-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.screenshot-item {
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.screenshot-item:hover {
  transform: translateY(-8px);
  box-shadow: var(--glow);
}

.screenshot-placeholder {
  aspect-ratio: 16/10;
  background: linear-gradient(
    135deg,
    rgba(26, 11, 46, 0.8),
    rgba(45, 27, 78, 0.6)
  );
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  color: var(--text-secondary);
}

.screenshot-placeholder i {
  font-size: 3rem;
  color: var(--accent-primary);
}

/* About Section */
.about {
  padding: 6rem 0;
  background: linear-gradient(
    180deg,
    transparent,
    rgba(26, 11, 46, 0.3),
    transparent
  );
}

.about-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-values {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  margin-top: 2rem;
}

.value-item h4 {
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.value-item p {
  color: var(--text-secondary);
  line-height: 1.6;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.stat-card {
  background: linear-gradient(
    135deg,
    rgba(26, 11, 46, 0.6),
    rgba(45, 27, 78, 0.4)
  );
  backdrop-filter: blur(20px);
  border: 1px solid rgba(139, 92, 246, 0.2);
  border-radius: var(--border-radius-lg);
  padding: 2rem;
  text-align: center;
  transition: var(--transition);
}

.stat-card:hover {
  transform: translateY(-4px);
  border-color: rgba(139, 92, 246, 0.4);
}

.stat-card .stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent-primary);
  display: block;
  margin-bottom: 0.5rem;
}

.stat-card .stat-label {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

/* Contact Section */
.contact {
  padding: 6rem 0;
}

.contact-content {
  display: flex;
  justify-content: center;
  align-items: center;
  max-width: 1000px;
  margin: 0 auto;
}

/* Contact Form Styles */
.contact-form-section {
  background: linear-gradient(
    135deg,
    rgba(26, 11, 46, 0.6),
    rgba(45, 27, 78, 0.4)
  );
  backdrop-filter: blur(20px);
  border: 1px solid rgba(139, 92, 246, 0.2);
  border-radius: var(--border-radius-lg);
  padding: 2rem;
  width: 100%;
  max-width: 100%;
}

.form-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2rem;
  text-align: left;
}

.message-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-family: var(--font-primary);
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
  font-size: var(--font-size-sm);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 0.875rem 1rem;
  border: 1px solid rgba(139, 92, 246, 0.3);
  border-radius: var(--border-radius);
  background: rgba(139, 92, 246, 0.05);
  color: var(--text-primary);
  font-family: var(--font-secondary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  transition: var(--transition);
  backdrop-filter: blur(10px);
  /* Enhanced mobile support */
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  box-sizing: border-box;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-secondary);
  opacity: 0.7;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-primary);
  background: rgba(139, 92, 246, 0.1);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
}

.form-group select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%238b5cf6' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
  background-position: right 0.75rem center;
  background-repeat: no-repeat;
  background-size: 1.5em 1.5em;
  padding-right: 2.5rem;
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.submit-btn {
  background: linear-gradient(
    135deg,
    var(--accent-primary),
    var(--accent-secondary)
  );
  color: white;
  border: none;
  border-radius: var(--border-radius);
  padding: 1rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  margin-top: 0.5rem;
}

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

.submit-btn:active {
  transform: translateY(0);
}

.submit-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* Form Validation Styles */
.form-group input.error,
.form-group select.error,
.form-group textarea.error {
  border-color: var(--error);
  background: rgba(255, 0, 110, 0.05);
  box-shadow: 0 0 0 3px rgba(255, 0, 110, 0.1);
}

.field-error {
  color: var(--error);
  font-size: 0.8rem;
  margin-top: 0.25rem;
  display: block;
  animation: slideInError 0.3s ease-out;
}

@keyframes slideInError {
  from {
    opacity: 0;
    transform: translateY(-5px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  margin-top: 2rem;
}

.contact-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2rem;
}

.contact-method {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 2rem;
}

.contact-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--border-radius);
  background: linear-gradient(
    135deg,
    var(--accent-primary),
    var(--accent-secondary)
  );
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  flex-shrink: 0;
  font-size: 1.2rem;
}

.contact-details h4 {
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
  font-size: 1.1rem;
}

.contact-details p {
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
}

.email-link {
  color: var(--accent-primary);
  text-decoration: none;
  font-weight: 500;
  display: block;
  margin-bottom: 0.5rem;
  transition: var(--transition);
}

.email-link:hover {
  color: var(--accent-secondary);
  text-decoration: underline;
}

.response-time {
  color: var(--text-muted);
  font-size: 0.85rem;
  font-style: italic;
}

.connect-section {
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(139, 92, 246, 0.2);
}

.connect-section h4 {
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-primary);
  font-size: 1.1rem;
}

.connect-section .social-links {
  display: flex;
  gap: 1rem;
}

.connect-section .social-link {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(139, 92, 246, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-primary);
  text-decoration: none;
  transition: var(--transition);
  border: 1px solid rgba(139, 92, 246, 0.2);
}

.connect-section .social-link:hover {
  background: rgba(139, 92, 246, 0.2);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
}

.download-section {
  background: linear-gradient(
    135deg,
    rgba(26, 11, 46, 0.6),
    rgba(45, 27, 78, 0.4)
  );
  backdrop-filter: blur(20px);
  border: 1px solid rgba(139, 92, 246, 0.2);
  border-radius: var(--border-radius-lg);
  padding: 2rem;
}

.download-card h3 {
  text-align: center;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.download-card p {
  text-align: center;
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.download-buttons {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
}

.download-btn {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid rgba(139, 92, 246, 0.3);
  border-radius: var(--border-radius);
  color: var(--text-primary);
  text-decoration: none;
  transition: var(--transition);
}

.download-btn:hover {
  background: rgba(139, 92, 246, 0.2);
  border-color: var(--accent-primary);
  transform: translateY(-2px);
}

.download-btn i {
  font-size: 1.5rem;
  color: var(--accent-primary);
}

.btn-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
  display: block;
}

.btn-platform {
  font-weight: 600;
  color: var(--text-primary);
  display: block;
}

.system-requirements {
  padding-top: 1.5rem;
  border-top: 1px solid rgba(139, 92, 246, 0.2);
}

.system-requirements h4 {
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.system-requirements ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.system-requirements li {
  color: var(--text-secondary);
  font-size: 0.875rem;
  position: relative;
  padding-left: 1.5rem;
}

.system-requirements li::before {
  content: "•";
  color: var(--accent-primary);
  position: absolute;
  left: 0;
}

/* Footer */
.footer {
  background: linear-gradient(
    135deg,
    rgba(13, 2, 33, 0.9),
    rgba(26, 11, 46, 0.8)
  );
  backdrop-filter: blur(20px);
  border-top: 1px solid rgba(139, 92, 246, 0.2);
  padding: 4rem 0 2rem;
  margin-top: 6rem;
  position: relative;
  overflow: hidden;
}

.footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--accent-primary),
    transparent
  );
  opacity: 0.6;
}

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

.footer-brand {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  max-width: 400px;
}

.footer-logo {
  height: 56px;
  width: auto;
  border-radius: var(--border-radius);
  flex-shrink: 0;
}

.footer-brand-content {
  flex: 1;
}

.footer-brand h3 {
  font-family: var(--font-primary);
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-snug);
  background: linear-gradient(
    135deg,
    var(--text-primary),
    var(--accent-primary)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-brand p {
  font-family: var(--font-secondary);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  margin: 0;
}

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

.footer-column {
  min-width: 0;
}

.footer-column h4 {
  font-family: var(--font-primary);
  color: var(--text-primary);
  margin-bottom: 1.5rem;
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-lg);
  line-height: var(--line-height-snug);
  position: relative;
}

.footer-column h4::after {
  content: "";
  position: absolute;
  bottom: -0.5rem;
  left: 0;
  width: 30px;
  height: 2px;
  background: linear-gradient(
    90deg,
    var(--accent-primary),
    var(--accent-secondary)
  );
  border-radius: 1px;
}

.footer-column a {
  display: block;
  font-family: var(--font-secondary);
  color: var(--text-secondary);
  text-decoration: none;
  margin-bottom: 0.75rem;
  transition: var(--transition);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-normal);
  position: relative;
  padding-left: 0;
}

.footer-column a:hover {
  color: var(--accent-primary);
  padding-left: 0.5rem;
  transform: translateX(2px);
}

.footer-column a:focus {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
  border-radius: 4px;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 2.5rem;
  border-top: 1px solid rgba(139, 92, 246, 0.2);
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-info {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  flex: 1;
  min-width: 0;
}

.footer-bottom p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin: 0;
  line-height: 1.4;
}

.footer-email {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--accent-primary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
  padding: 0.5rem 0;
  border-radius: 4px;
}

.footer-email:hover {
  color: var(--accent-secondary);
  transform: translateY(-1px);
  background: rgba(139, 92, 246, 0.1);
  padding: 0.5rem 0.75rem;
}

.footer-email:focus {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
  background: rgba(139, 92, 246, 0.1);
  padding: 0.5rem 0.75rem;
}

.footer-email i {
  font-size: 1rem;
  flex-shrink: 0;
}

.social-links {
  display: flex;
  gap: 1rem;
  flex-shrink: 0;
}

.social-links a {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(139, 92, 246, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-primary);
  text-decoration: none;
  transition: var(--transition);
  border: 1px solid rgba(139, 92, 246, 0.2);
}

.social-links a:hover {
  background: rgba(139, 92, 246, 0.2);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
  border-color: var(--accent-primary);
}

.social-links a:focus {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
  background: rgba(139, 92, 246, 0.2);
}

/* Notification Styles */
.notification {
  position: fixed;
  top: 2rem;
  right: 2rem;
  background: linear-gradient(
    135deg,
    var(--accent-primary),
    var(--accent-secondary)
  );
  color: white;
  padding: 1rem 1.5rem;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  z-index: 10000;
  transform: translateX(100%);
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  max-width: 400px;
  word-wrap: break-word;
}

.notification.show {
  transform: translateX(0);
  opacity: 1;
}

.notification.success {
  background: linear-gradient(135deg, var(--success), var(--accent-tertiary));
}

.notification.error {
  background: linear-gradient(135deg, var(--error), #ff4757);
}

.notification.warning {
  background: linear-gradient(135deg, var(--warning), #ffa502);
}

.notification i {
  font-size: 1.2rem;
  flex-shrink: 0;
}

.notification span {
  font-size: 0.9rem;
  line-height: 1.4;
}

/* Form Error Styles */
.field-error {
  color: var(--error);
  font-size: 0.8rem;
  margin-top: 0.25rem;
  display: none;
  animation: slideInError 0.3s ease-out;
}

@keyframes slideInError {
  from {
    opacity: 0;
    transform: translateY(-5px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Loading Button Styles */
.btn-loading {
  display: none;
  align-items: center;
  gap: 0.5rem;
}

.btn-loading i {
  animation: spin 1s linear infinite;
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* Responsive Design */
@media (max-width: 1400px) {
  .tech-content,
  .demo-container,
  .about-content,
  .contact-content {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .hero-stats {
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
  }

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

  .tech-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .about-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

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

  .footer-brand {
    max-width: 100%;
  }

  /* Tablet Gallery - Only when screen is too narrow for 2-column layout */
  .gallery-item {
    padding: 3rem 2rem;
    min-width: 100vw; /* Full viewport width on tablet */
    width: 100vw; /* Full viewport width on tablet */
  }

  .feature-demo {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    text-align: center;
    width: 100%;
    align-items: center;
    justify-content: center;
    min-height: 400px;
  }

  .demo-image {
    justify-content: center;
    width: 100%;
    margin-left: 0;
  }

  .image-placeholder {
    width: 100%;
    max-width: 500px;
    height: auto;
    aspect-ratio: 16/9;
    min-width: unset;
    min-height: unset;
  }

  .demo-conversation {
    margin-bottom: 2rem;
  }

  .conversation-bubble {
    max-width: 100%;
    align-self: center !important;
  }
}

@media (max-width: 1024px) {
  .nav-menu {
    gap: 2rem;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
  }

  .nav-container {
    gap: 1.5rem;
  }
}

@media (max-width: 768px) {
  /* Mobile Gallery Fixes */
  .gallery-container {
    width: 100vw !important;
    max-width: 100vw !important;
    margin-left: calc(-50vw + 50%) !important;
    margin-right: calc(-50vw + 50%) !important;
    overflow-x: hidden !important;
  }
  
  .gallery-track {
    width: calc(5 * 100vw) !important;
    max-width: none !important;
    display: flex !important;
  }
  
  .gallery-item {
    width: 100vw !important;
    min-width: 100vw !important;
    max-width: 100vw !important;
    flex-shrink: 0 !important;
    display: flex !important;
    flex-direction: column !important;
    justify-content: center !important;
    align-items: center !important;
  }
  
  .feature-demo {
    display: flex !important;
    flex-direction: column !important;
    width: 100% !important;
    max-width: calc(100vw - 2rem) !important;
    align-items: center !important;
    justify-content: center !important;
    padding: 1rem !important;
  }

  .nav-menu {
    display: none;
    position: fixed;
    top: var(--navbar-height);
    left: 0;
    right: 0;
    background: linear-gradient(135deg, rgba(13, 2, 33, 0.95), rgba(26, 11, 46, 0.9));
    backdrop-filter: blur(20px);
    border-top: 1px solid rgba(139, 92, 246, 0.2);
    flex-direction: column;
    padding: 2rem;
    gap: 1.5rem;
    transform: translateY(-100%);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 999;
  }
  
  .nav-menu.mobile-open {
    display: flex;
    transform: translateY(0);
    opacity: 1;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .language-switcher {
    font-size: var(--font-size-xs);
    padding: 0.4rem 0.8rem;
  }

  .nav-container {
    gap: 0.75rem;
    padding: 0 1.5rem;
  }

  .hero-title {
    font-size: var(--font-size-4xl);
    line-height: var(--line-height-tight);
  }

  .section-title {
    font-size: var(--font-size-3xl);
    line-height: var(--line-height-tight);
  }

  .scroll-indicator {
    margin-top: 3rem;
    margin-bottom: 1.5rem;
  }

  .scroll-text {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
  }

  .scroll-arrow {
    width: 35px;
    height: 35px;
    font-size: 1rem;
  }

  .hero-stats {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

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

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

  .about-stats {
    grid-template-columns: 1fr;
  }

  .footer {
    padding: 3rem 0 1.5rem;
    margin-top: 4rem;
  }

  .footer-content {
    gap: 2.5rem;
    margin-bottom: 2rem;
  }

  .footer-brand {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 1rem;
  }

  .footer-logo {
    height: 48px;
  }

  .footer-brand h3 {
    font-size: 1.25rem;
  }

  .footer-links {
    grid-template-columns: 1fr;
    gap: 2rem;
    justify-content: center;
  }

  .footer-column {
    text-align: center;
  }

  .footer-column h4::after {
    left: 50%;
    transform: translateX(-50%);
  }

  .footer-bottom {
    flex-direction: column;
    gap: 1.5rem;
    text-align: center;
    padding-top: 2rem;
  }

  .footer-info {
    align-items: center;
  }

  .social-links {
    justify-content: center;
  }

  /* Mobile Hero */

  /* Mobile Features */

  .features-horizontal {
    margin: 1.5rem auto;
    max-width: 100%;
  }

  .gallery-container {
    min-height: 600px;
    width: 100vw;
    margin-left: calc(-50vw + 50%);
    margin-right: calc(-50vw + 50%);
    overflow: hidden;
    border-radius: 0;
    max-width: 100vw;
    position: relative;
  }

  .gallery-item {
    padding: 2rem 1rem;
    min-width: 100vw; /* Full viewport width on mobile */
    width: 100vw; /* Full viewport width on mobile */
    max-width: 100vw;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 500px;
    box-sizing: border-box;
  }

  /* Better mobile spacing for gallery */
  .features-horizontal {
    margin: 1rem auto;
    padding: 0;
    overflow: visible;
  }

  .feature-demo {
    display: flex !important;
    flex-direction: column !important;
    gap: 2rem;
    text-align: center;
    max-width: 100%;
    height: auto;
    width: 100%;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    padding: 1rem;
    box-sizing: border-box;
  }

  .demo-image {
    display: flex !important;
    justify-content: center;
    width: 100%;
    margin-left: 0;
    order: 1;
    flex-shrink: 0;
    padding: 0.5rem;
  }

  .image-placeholder {
    width: 100%;
    max-width: 500px;
    height: auto;
    aspect-ratio: 16/9;
    min-width: unset;
    min-height: unset;
    margin-bottom: 1rem;
    padding: 1rem;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
  }

  .demo-conversation {
    order: 2;
    margin-bottom: 2rem;
    width: 100%;
    display: flex !important;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
    flex-shrink: 0;
    padding: 0.5rem;
  }

  .conversation-bubble {
    max-width: calc(100% - 2rem);
    align-self: center !important;
    padding: 0.9rem 1rem;
    margin: 0 1rem;
    font-size: 0.9rem;
  }

  .conversation-bubble p {
    font-size: 0.85rem;
    line-height: 1.4;
  }

  .bubble-sender {
    font-size: 0.75rem;
    margin-bottom: 0.4rem;
  }

  .gallery-pagination {
    bottom: 0.5rem;
    gap: 0.5rem;
  }

  .page-indicator {
    width: 10px;
    height: 2px;
  }

  .page-indicator:hover,
  .page-indicator.active {
    width: 20px;
  }

  .feature-categories {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin-top: 3rem;
  }

  .feature-category {
    padding: 1.5rem;
  }

  .security-features {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .security-feature {
    padding: 1.5rem;
  }

  /* Demo Section Mobile */
  .demo {
    padding: 4rem 0;
  }

  .demo-container {
    max-width: 100%;
    padding: 0 1rem;
  }

  /* Mobile form improvements for tablets/mobile */
  .contact-form-section {
    padding: 1.75rem;
  }

  .form-group input,
  .form-group select,
  .form-group textarea {
    font-size: 16px; /* Prevents zoom on iOS */
    padding: 1rem;
    border-radius: var(--border-radius);
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    box-sizing: border-box;
    touch-action: manipulation;
  }

  .form-group label {
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
  }

  .submit-btn {
    padding: 1rem 2rem;
    font-size: 1rem;
  }

  .demo-video {
    max-width: 100%;
  }

  .play-button {
    width: 80px;
    height: 80px;
    font-size: 2rem;
    margin-bottom: 1rem;
  }

  .video-overlay h3 {
    font-size: 1.5rem;
  }

  .video-overlay p {
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 1rem;
    max-width: 100%;
    overflow-x: hidden;
  }

  .nav-container {
    padding: 0 1rem;
    max-width: 100%;
  }

  /* Better mobile spacing */
  .hero {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .hero-container {
    padding: 0 1rem;
  }

  .section-header {
    margin-bottom: 2rem;
    padding: 0 0.5rem;
  }

  .features,
  .demo,
  .screenshots,
  .security-section,
  .contact {
    padding: 3rem 1rem;
  }

  .section-header {
    margin-bottom: 2rem;
    padding: 0;
  }

  .section-title {
    font-size: var(--font-size-2xl);
    line-height: var(--line-height-tight);
    margin-bottom: 1rem;
  }

  .section-description {
    font-size: var(--font-size-base);
    line-height: var(--line-height-relaxed);
    padding: 0 0.5rem;
  }

  .hero-title {
    font-size: var(--font-size-3xl);
    line-height: var(--line-height-tight);
  }

  .hero-description {
    font-size: var(--font-size-lg);
    line-height: var(--line-height-relaxed);
    padding: 0 0.5rem;
    margin-bottom: 2rem;
  }

  .gallery-pagination {
    bottom: 0.3rem;
    gap: 0.4rem;
  }

  .page-indicator {
    width: 8px;
    height: 2px;
  }

  .page-indicator:hover,
  .page-indicator.active {
    width: 16px;
  }

  .image-placeholder {
    width: 100%;
    max-width: 400px;
    height: auto;
    aspect-ratio: 16/9;
    min-width: unset;
    min-height: unset;
    margin-bottom: 1rem;
  }

  .image-placeholder span {
    font-size: 1.2rem;
    padding: 1.2rem;
  }

  .conversation-bubble {
    padding: 0.8rem 1rem;
    max-width: calc(100% - 1rem);
    margin: 0 0.5rem;
    font-size: 0.85rem;
  }

  .conversation-bubble p {
    font-size: 0.8rem;
    line-height: 1.3;
  }

  .bubble-sender {
    font-size: 0.7rem;
    margin-bottom: 0.3rem;
  }

  .feature-categories {
    gap: 1rem;
  }

  .feature-category {
    padding: 1.2rem;
  }

  .security-features {
    gap: 1.5rem;
  }

  .security-feature {
    padding: 1.2rem;
  }

  .security-icon {
    width: 60px;
    height: 60px;
    font-size: 1.5rem;
  }

  .floating-card {
    padding: 1.5rem;
  }

  .feature-card,
  .tech-stack,
  .stat-card,
  .download-section {
    padding: 1.5rem;
  }

  /* Footer Mobile Small */
  .footer {
    padding: 2.5rem 0 1rem;
  }

  .footer-content {
    gap: 2rem;
    margin-bottom: 1.5rem;
  }

  .footer-brand {
    gap: 0.75rem;
  }

  .footer-logo {
    height: 40px;
  }

  .footer-brand h3 {
    font-size: 1.1rem;
  }

  .footer-brand p {
    font-size: 0.9rem;
  }

  .footer-links {
    gap: 1.5rem;
  }

  .footer-column h4 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
  }

  .footer-column a {
    font-size: 1rem;
    margin-bottom: 0.5rem;
  }

  .footer-bottom {
    gap: 1rem;
    padding-top: 1.5rem;
  }

  .footer-bottom p {
    font-size: 0.9rem;
  }

  .footer-email {
    font-size: 0.9rem;
  }

  .social-links a {
    width: 48px;
    height: 48px;
  }

  /* Mobile form improvements for small screens */
  .contact-form-section {
    padding: 1rem;
    margin: 0 0.5rem;
  }

  .form-title {
    font-size: 1.1rem;
    margin-bottom: 1.25rem;
    text-align: center;
  }

  .form-group {
    margin-bottom: 1.25rem;
  }

  .form-group label {
    font-size: 0.85rem;
    margin-bottom: 0.4rem;
    display: block;
  }

  .form-group input,
  .form-group select,
  .form-group textarea {
    padding: 0.875rem;
    font-size: 16px; /* Prevents zoom on iOS */
    border-radius: var(--border-radius);
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    box-sizing: border-box;
    touch-action: manipulation;
    background: rgba(139, 92, 246, 0.05);
    border: 1px solid rgba(139, 92, 246, 0.3);
  }

  .form-group textarea {
    min-height: 100px;
    resize: vertical;
  }

  .submit-btn {
    padding: 1rem;
    font-size: 1rem;
    width: 100%;
    margin-top: 0.5rem;
  }

  .field-error {
    font-size: 0.8rem;
    margin-top: 0.25rem;
  }
}