@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Outfit:wght@500;600;700;800&display=swap');

/* Cascade Layers declaration */
@layer reset, base, theme, components, utilities;

@layer reset {
  *, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
  
  html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
  }

  body {
    min-height: 100dvh;
    text-rendering: optimizeSpeed;
    line-height: 1.6;
    overflow-x: hidden;
  }

  img, picture, video, canvas, svg {
    display: block;
    max-width: 100%;
    height: auto;
  }

  input, button, textarea, select {
    font: inherit;
    color: inherit;
    background: transparent;
    border: none;
  }
  
  a {
    text-decoration: none;
    color: inherit;
  }
  
  ul, ol {
    list-style: none;
  }
}

@layer theme {
  :root {
    color-scheme: dark light;
    
    /* Font Families */
    --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    
    /* Design Tokens (Dark - Default) */
    --bg: #09090b;
    --bg-grid: rgba(255, 255, 255, 0.02);
    --surface: rgba(18, 18, 22, 0.7);
    --surface-hover: rgba(25, 25, 32, 0.85);
    --surface-border: rgba(255, 255, 255, 0.08);
    --surface-border-active: rgba(255, 255, 255, 0.16);
    
    --text: #f4f4f5;
    --text-secondary: #a1a1aa;
    --text-muted: #62626e;
    
    /* Teal & Emerald Green inspired Accent (Matches App Logo) */
    --accent: #06b6d4;
    --accent-glow: rgba(6, 182, 212, 0.15);
    --accent-gradient: linear-gradient(135deg, #00f5d4 0%, #06b6d4 50%, #10b981 100%);
    --accent-gradient-hover: linear-gradient(135deg, #00d2c4 0%, #0891b2 50%, #059669 100%);
    --accent-gradient-text: linear-gradient(135deg, #22d3ee 0%, #34d399 100%);
    
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.7);
    
    /* Borders & Corners */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --radius-full: 9999px;
    
    /* Effects */
    --glass-blur: blur(12px) saturate(180%);
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
  }

  html[data-theme="light"] {
    /* Design Tokens (Light Theme override) */
    --bg: #fafafa;
    --bg-grid: rgba(0, 0, 0, 0.015);
    --surface: rgba(255, 255, 255, 0.75);
    --surface-hover: rgba(255, 255, 255, 0.9);
    --surface-border: rgba(0, 0, 0, 0.06);
    --surface-border-active: rgba(0, 0, 0, 0.12);
    
    --text: #09090b;
    --text-secondary: #4b5563;
    --text-muted: #9ca3af;
    
    --accent: #0891b2;
    --accent-glow: rgba(8, 145, 178, 0.08);
    --accent-gradient: linear-gradient(135deg, #0891b2 0%, #0284c7 50%, #059669 100%);
    --accent-gradient-hover: linear-gradient(135deg, #155e75 0%, #0369a1 50%, #064e3b 100%);
    --accent-gradient-text: linear-gradient(135deg, #0f766e 0%, #065f46 100%);
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.1);
  }
}

@layer base {
  body {
    background-color: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    overflow-y: scroll;
    transition: background-color var(--transition-normal), color var(--transition-normal);
    background-image: 
      radial-gradient(var(--bg-grid) 1px, transparent 1px),
      radial-gradient(var(--bg-grid) 1px, transparent 1px);
    background-size: 24px 24px;
    background-position: 0 0, 12px 12px;
  }
  
  /* Scrollbar Customization */
  scrollbar-color: var(--text-muted) var(--bg);
  scrollbar-width: thin;

  body::-webkit-scrollbar {
    width: 8px;
    height: 8px;
  }
  body::-webkit-scrollbar-track {
    background: var(--bg);
  }
  body::-webkit-scrollbar-thumb {
    background: var(--text-muted);
    border-radius: var(--radius-full);
    border: 2px solid var(--bg);
  }
  body::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
  }

  /* Headings */
  h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.25;
    letter-spacing: -0.02em;
    text-wrap: balance;
  }
  
  p {
    font-size: 1rem;
    color: var(--text-secondary);
    text-wrap: pretty;
  }

  /* Accessible Selection */
  ::selection {
    background-color: var(--accent);
    color: #ffffff;
  }
}

@layer components {
  /* Site Layout Shell */
  .header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background-color: var(--surface);
    backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--surface-border);
    transition: background-color var(--transition-normal), border-color var(--transition-normal);
  }
  
  .header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
  
  .logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.35rem;
    letter-spacing: -0.03em;
    color: var(--text);
  }

  .logo span {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }
  
  .logo-icon {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-sm);
    background: var(--accent-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 800;
    font-size: 1.1rem;
    font-family: var(--font-heading);
    box-shadow: var(--shadow-sm);
  }

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

  .nav-link {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
    position: relative;
    padding: 0.25rem 0;
  }

  .nav-link:hover, .nav-link.active {
    color: var(--text);
  }

  .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--accent-gradient);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform var(--transition-normal);
  }

  .nav-link:hover::after, .nav-link.active::after {
    transform: scaleX(1);
    transform-origin: left;
  }

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

  /* Hamburger Menu */
  .menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    z-index: 102;
    padding: 0.5rem;
  }

  .menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--text);
    border-radius: var(--radius-full);
    transition: var(--transition-normal);
  }

  /* Buttons */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-sm);
    min-block-size: 44px; /* Accessible touch target */
  }

  .btn-primary {
    background: var(--accent-gradient);
    color: #ffffff !important;
  }

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

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

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

  .btn-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    background-color: var(--surface);
    border: 1px solid var(--surface-border);
    transition: var(--transition-fast);
    min-block-size: 40px;
  }

  .btn-icon:hover {
    background-color: var(--surface-hover);
    border-color: var(--surface-border-active);
  }

  /* Theme Switcher Button Animation */
  .theme-toggle svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
    transition: transform var(--transition-slow);
  }
  .theme-toggle:hover svg {
    transform: rotate(45deg);
  }

  /* Cards & Glassmorphism */
  .card {
    background-color: var(--surface);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    backdrop-filter: var(--glass-blur);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
  }

  .card:hover {
    transform: translateY(-6px);
    border-color: var(--surface-border-active);
    box-shadow: var(--shadow-lg);
  }

  /* App Card */
  .app-card {
    display: flex;
    flex-direction: column;
    height: 100%;
  }

  .app-icon-wrapper {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-md);
    background: var(--accent-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
    margin-bottom: 1.5rem;
    color: white;
  }
  
  .app-icon-img {
    width: 48px;
    height: 48px;
    object-fit: contain;
  }

  .app-card-title {
    font-size: 1.35rem;
    margin-bottom: 0.5rem;
  }

  .app-card-category {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    background-color: var(--accent-glow);
    color: var(--accent);
    margin-bottom: 1rem;
    width: fit-content;
  }

  .app-card-desc {
    font-size: 0.95rem;
    line-height: 1.5;
    margin-bottom: 1.5rem;
    flex-grow: 1;
  }

  .app-card-actions {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    width: 100%;
    margin-top: auto;
  }

  .app-card-actions .btn {
    width: 100%;
    justify-content: center;
    text-align: center;
    white-space: nowrap;
  }

  /* Hero Section */
  .hero-section {
    padding: 8rem 1.5rem 2.5rem;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    min-height: auto;
    justify-content: center;
    overflow: hidden;
  }

  .hero-bg-glow {
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: var(--radius-full);
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    filter: blur(80px);
    z-index: -1;
    pointer-events: none;
  }

  .hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    background-color: var(--surface);
    border: 1px solid var(--surface-border);
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
    color: var(--text-secondary);
  }

  .hero-badge span {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: var(--radius-full);
    background-color: var(--success);
    box-shadow: 0 0 8px var(--success);
  }

  .hero-title {
    font-size: clamp(2.5rem, 1rem + 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -0.04em;
  }

  .hero-title span {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }

  .hero-subtitle {
    font-size: clamp(1.1rem, 0.9rem + 1.2vw, 1.35rem);
    max-width: 700px;
    margin: 0 auto 2.5rem;
    color: var(--text-secondary);
  }

  .hero-buttons {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
  }

  /* Mockup Container */
  .hero-mockup-container {
    margin-top: 4rem;
    position: relative;
    max-width: 800px;
    width: 100%;
    display: flex;
    justify-content: center;
  }

  .device-mockup {
    position: relative;
    width: 280px;
    height: 570px;
    border-radius: 40px;
    background-color: #000000;
    border: 10px solid #1a1a1f;
    box-shadow: var(--shadow-lg), 0 0 100px var(--accent-glow);
    overflow: hidden;
  }

  .device-screen {
    width: 100%;
    height: 100%;
    background-color: var(--bg);
    position: relative;
    overflow: hidden;
  }

  .device-notch {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 24px;
    background-color: #1a1a1f;
    border-bottom-left-radius: var(--radius-md);
    border-bottom-right-radius: var(--radius-md);
    z-index: 10;
  }

  /* Sections Layout */
  .section {
    padding: 6rem 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
  }

  .section-header {
    text-align: center;
    max-width: 650px;
    margin: 0 auto 4rem;
  }

  .section-title {
    font-size: clamp(2rem, 1rem + 4vw, 2.75rem);
    margin-bottom: 1rem;
    letter-spacing: -0.03em;
  }

  .section-subtitle {
    color: var(--text-secondary);
  }

  /* Categories / Chips */
  .categories-scroll {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    overflow-x: auto;
    padding: 0.5rem 0.25rem 1.5rem;
    scrollbar-width: none;
    -ms-overflow-style: none;
  }

  .categories-scroll::-webkit-scrollbar {
    display: none;
  }

  .chip {
    padding: 0.6rem 1.25rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.9rem;
    white-space: nowrap;
    background-color: var(--surface);
    border: 1px solid var(--surface-border);
    cursor: pointer;
    transition: var(--transition-fast);
  }

  .chip:hover, .chip.active {
    background-color: var(--accent);
    color: white;
    border-color: var(--accent);
    box-shadow: 0 4px 12px var(--accent-glow);
  }

  /* Grid Layouts */
  .grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
  }

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

  .grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
  }

  /* Statistics Counter Component */
  .stats-grid {
    background-color: var(--surface);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-xl);
    padding: 3rem;
    text-align: center;
  }

  .stat-number {
    font-size: clamp(2.5rem, 1.5rem + 5vw, 4.5rem);
    font-weight: 800;
    font-family: var(--font-heading);
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.5rem;
    line-height: 1;
  }

  .stat-label {
    font-weight: 600;
    font-size: 1rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
  }

  /* Feature list */
  .feature-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
  }

  .feature-icon-wrapper {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background-color: var(--accent-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
  }

  .feature-title {
    font-size: 1.15rem;
    margin-bottom: 0.25rem;
  }

  /* Testimonials */
  .testimonials-scroller {
    overflow: hidden;
    padding: 1rem 0;
    position: relative;
    width: 100%;
  }

  .testimonials-scroller::before, .testimonials-scroller::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    width: 100px;
    z-index: 2;
    pointer-events: none;
  }

  .testimonials-scroller::before {
    left: 0;
    background: linear-gradient(to right, var(--bg), transparent);
  }

  .testimonials-scroller::after {
    right: 0;
    background: linear-gradient(to left, var(--bg), transparent);
  }

  .testimonials-track {
    display: flex;
    gap: 2rem;
    width: max-content;
    animation: scrollTestimonials 40s linear infinite;
  }

  .testimonials-track:hover {
    animation-play-state: paused;
  }

  @keyframes scrollTestimonials {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
  }

  .testimonial-card {
    width: 320px;
    padding: 1.75rem;
    background-color: var(--surface);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-lg);
  }

  .testimonial-rating {
    color: var(--warning);
    margin-bottom: 0.75rem;
    font-size: 0.9rem;
  }

  .testimonial-quote {
    font-size: 0.95rem;
    font-style: italic;
    color: var(--text);
    margin-bottom: 1.25rem;
  }

  .testimonial-user {
    display: flex;
    align-items: center;
    gap: 0.75rem;
  }

  .testimonial-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: var(--accent-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: white;
  }

  .testimonial-name {
    font-weight: 600;
    font-size: 0.9rem;
  }

  .testimonial-role {
    font-size: 0.75rem;
    color: var(--text-muted);
  }

  /* FAQs Accordion */
  .faq-accordion {
    max-width: 750px;
    margin: 0 auto;
  }

  .faq-item {
    border-bottom: 1px solid var(--surface-border);
    padding: 1.5rem 0;
  }

  .faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    cursor: pointer;
    font-size: 1.2rem;
    font-weight: 600;
    text-align: left;
    gap: 1.5rem;
  }

  .faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal), opacity var(--transition-normal);
    opacity: 0;
    margin-top: 0.75rem;
    color: var(--text-secondary);
  }

  .faq-item.active .faq-answer {
    max-height: 300px;
    opacity: 1;
  }

  .faq-icon {
    width: 24px;
    height: 24px;
    position: relative;
    flex-shrink: 0;
    transition: transform var(--transition-normal);
  }

  .faq-icon::before, .faq-icon::after {
    content: '';
    position: absolute;
    background-color: var(--text);
    transition: transform var(--transition-normal);
  }

  .faq-icon::before {
    top: 11px;
    left: 4px;
    width: 16px;
    height: 2px;
  }

  .faq-icon::after {
    top: 4px;
    left: 11px;
    width: 2px;
    height: 16px;
  }

  .faq-item.active .faq-icon {
    transform: rotate(45deg);
  }

  /* Newsletter Component */
  .newsletter-card {
    background: linear-gradient(135deg, var(--surface) 0%, rgba(99, 102, 241, 0.05) 100%);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-xl);
    padding: 4rem 3rem;
    text-align: center;
    position: relative;
    overflow: hidden;
  }
  
  .newsletter-card::before {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 75%);
    bottom: -150px;
    right: -150px;
    z-index: 0;
  }

  .newsletter-title {
    font-size: 2.25rem;
    margin-bottom: 0.75rem;
  }

  .newsletter-desc {
    max-width: 500px;
    margin: 0 auto 2.5rem;
  }

  .newsletter-form {
    display: flex;
    gap: 1rem;
    max-width: 500px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
  }

  .form-input {
    flex-grow: 1;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-full);
    border: 1px solid var(--surface-border);
    background-color: var(--bg);
    color: var(--text);
    transition: border-color var(--transition-fast);
  }

  .form-input:focus {
    outline: none;
    border-color: var(--accent);
  }

  /* Footer */
  .footer {
    background-color: var(--surface);
    border-top: 1px solid var(--surface-border);
    padding: 5rem 1.5rem 2rem;
    margin-top: 5rem;
    font-size: 0.95rem;
  }

  .footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: 4rem;
    margin-bottom: 4rem;
  }

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

  .footer-logo-desc {
    color: var(--text-secondary);
    max-width: 300px;
  }

  .footer-heading {
    font-size: 1.15rem;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 0.05em;
  }

  .footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
  }

  .footer-link {
    color: var(--text-secondary);
    transition: color var(--transition-fast);
  }

  .footer-link:hover {
    color: var(--text);
  }

  .footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 2rem;
    border-top: 1px solid var(--surface-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-muted);
    font-size: 0.85rem;
    flex-wrap: wrap;
    gap: 1rem;
  }

  .footer-socials {
    display: flex;
    gap: 1rem;
  }

  .footer-social-btn {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg);
    border: 1px solid var(--surface-border);
    color: var(--text-secondary);
    transition: var(--transition-fast);
  }

  .footer-social-btn:hover {
    color: var(--text);
    border-color: var(--surface-border-active);
    transform: translateY(-2px);
  }

  /* Floating UI Actions */
  .floating-actions {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    z-index: 99;
  }

  .float-btn {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background-color: var(--surface);
    border: 1px solid var(--surface-border);
    box-shadow: var(--shadow-md);
    color: var(--text);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-normal);
    backdrop-filter: var(--glass-blur);
    opacity: 0;
    transform: translateY(10px);
    pointer-events: none;
  }

  .float-btn.visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }

  .float-btn:hover {
    background-color: var(--surface-hover);
    border-color: var(--surface-border-active);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
  }
  
  /* Scroll Progress Bar */
  .scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: var(--accent-gradient);
    width: 0%;
    z-index: 101;
    transition: width 0.1s ease-out;
  }

  /* Search and Filtering on Apps Page */
  .search-container {
    max-width: 600px;
    margin: 0 auto 3rem;
    position: relative;
  }

  .search-input-wrapper {
    display: flex;
    align-items: center;
    background-color: var(--surface);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-full);
    padding: 0.5rem 1.5rem;
    transition: var(--transition-fast);
    backdrop-filter: var(--glass-blur);
  }
  
  .search-input-wrapper:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 15px var(--accent-glow);
  }

  .search-field {
    width: 100%;
    padding: 0.5rem;
    font-size: 1.1rem;
  }

  .search-field:focus {
    outline: none;
  }
  
  .search-icon {
    color: var(--text-muted);
    margin-right: 0.5rem;
    width: 20px;
    height: 20px;
  }

  .filter-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
    gap: 1.5rem;
  }
  
  .sort-select {
    padding: 0.6rem 2.5rem 0.6rem 1.5rem;
    border-radius: var(--radius-full);
    background-color: var(--surface);
    border: 1px solid var(--surface-border);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23a1a1aa' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1.25rem center;
    background-size: 1rem;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  }

  .sort-select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
  }

  /* Gallery Component (App Detail Page) */
  .gallery-container {
    display: flex;
    gap: 1.5rem;
    overflow-x: auto;
    padding-bottom: 1.5rem;
    scrollbar-width: thin;
  }
  
  .gallery-item {
    flex-shrink: 0;
    width: 220px;
    height: 450px;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--surface-border);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    cursor: zoom-in;
  }

  .gallery-item:hover {
    transform: scale(1.03);
    border-color: var(--surface-border-active);
  }

  .gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  /* Lightbox/Modal for Gallery */
  .modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
  }

  .modal-content {
    max-width: 90%;
    max-height: 80%;
  }

  .modal-close {
    position: absolute;
    top: 2rem;
    right: 2rem;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-fast);
  }

  .modal-close:hover {
    background-color: rgba(255, 255, 255, 0.2);
  }

  /* Scroll Reveal & Page Transitions */
  .reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
  }

  .reveal.active {
    opacity: 1;
    transform: translateY(0);
  }
  
  .fade-in {
    animation: fadeIn 0.5s ease-out forwards;
  }

  @keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
  }

  /* Responsive Adjustments */
  @media (max-width: 1024px) {
    .grid-3 {
      grid-template-columns: repeat(2, 1fr);
    }
    
    .grid-4 {
      grid-template-columns: repeat(2, 1fr);
    }
  }

  @media (max-width: 768px) {
    .header-container {
      padding: 0.75rem 1rem;
    }

    .menu-toggle {
      display: flex;
    }

    .nav-menu {
      position: fixed;
      top: 0;
      right: -100%;
      width: 80%;
      height: 100dvh;
      background-color: var(--bg);
      backdrop-filter: var(--glass-blur);
      flex-direction: column;
      justify-content: center;
      gap: 2.5rem;
      z-index: 101;
      box-shadow: -10px 0 30px rgba(0,0,0,0.15);
      transition: right var(--transition-normal);
    }

    .nav-menu.active {
      right: 0;
    }

    .grid-2, .grid-3, .grid-4 {
      grid-template-columns: 1fr;
    }

    .footer-container {
      grid-template-columns: 1fr;
      gap: 3rem;
    }
    
    .newsletter-card {
      padding: 2.5rem 1.5rem;
    }

    .newsletter-form {
      flex-direction: column;
      gap: 0.75rem;
    }
    
    .faq-question {
      font-size: 1.05rem;
    }
    
    .stats-grid {
      padding: 2rem 1.5rem;
    }
    
    .floating-actions {
      bottom: 1.5rem;
      right: 1.5rem;
    }
  }

  /* Accessibility styling */
  @media (prefers-reduced-motion: reduce) {
    html {
      scroll-behavior: auto;
    }
    
    *, *::before, *::after {
      animation-duration: 0.01ms !important;
      animation-iteration-count: 1 !important;
      transition-duration: 0.01ms !important;
      scroll-behavior: auto !important;
    }
    
    .reveal {
      opacity: 1;
      transform: none;
      transition: none;
    }
  }
}

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