@layer reset, base, theme, components, utilities;

@layer reset {
  *, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }

  html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
  }

  body {
    min-block-size: 100vh;
    font-family: var(--font-sans);
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
  }

  img, svg {
    max-inline-size: 100%;
    display: block;
  }

  a {
    color: inherit;
    text-decoration: none;
  }

  button {
    font: inherit;
    border: none;
    background: none;
    cursor: pointer;
  }
}

@layer base {
  :root {
    /* Tier 1 & 2: Midnight Corporate Dark Palette */
    --primary: #38BDF8;       /* Vibrant Cyan */
    --primary-hover: #7DD3FC;
    --accent: #2DD4BF;        /* Emerald/Teal Glow */
    --accent-light: #06B6D4;
    --bg-color: #0A1329;      /* Deep Navy Background */
    --surface-card: rgba(15, 23, 42, 0.4);
    --surface-glass: rgba(10, 19, 41, 0.7);
    --surface-glass-border: rgba(56, 189, 248, 0.2);
    
    --text-main: #F8FAFC;
    --text-muted: #94A3B8;
    --text-inverse: #0F172A;

    --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
    --shadow-glass: 0 20px 40px -15px rgba(56, 189, 248, 0.15);
    
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-pill: 9999px;
  }

  :focus-visible {
    outline: 3px solid var(--accent-light);
    outline-offset: 3px;
  }

  h1, h2, h3, h4 {
    line-height: 1.2;
    font-weight: 800;
    color: var(--primary);
    text-wrap: balance;
  }

  p {
    text-wrap: pretty;
  }
}

@layer theme {
  /* Squircle progressive enhancement */
  .squircle {
    border-radius: var(--radius-lg);
    corner-shape: squircle;
  }
}

@layer components {
  /* Site Header & Navbar */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--surface-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--surface-glass-border);
    transition: box-shadow 0.3s ease;
  }

  .site-header.scrolled {
    box-shadow: var(--shadow-md);
  }

  .header-container {
    max-inline-size: 1200px;
    margin-inline: auto;
    padding-inline: 24px;
    block-size: 76px;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

  .brand {
    display: flex;
    align-items: center;
    gap: 12px;
  }

  .brand-icon {
    inline-size: 40px;
    block-size: 40px;
    border-radius: 10px;
  }

  .brand-name {
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: -0.03em;
  }

  .nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
  }

  .nav-link {
    font-weight: 600;
    color: var(--text-muted);
    transition: color 0.2s;
  }

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

  .mobile-menu-toggle {
    display: none;
    color: var(--primary);
    padding: 8px;
  }

  .mobile-menu {
    display: none;
    flex-direction: column;
    padding: 16px 24px 24px;
    background: var(--surface-card);
    border-bottom: 1px solid var(--surface-glass-border);
    gap: 16px;
  }

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

  /* Buttons */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 12px 24px;
    border-radius: var(--radius-pill);
    font-weight: 700;
    font-size: 0.95rem;
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  }

  .btn:active {
    transform: scale(0.97);
  }

  .btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: var(--text-inverse);
    box-shadow: 0 4px 14px 0 rgba(2, 132, 199, 0.35);
  }

  .btn-primary:hover {
    box-shadow: 0 6px 20px rgba(2, 132, 199, 0.45);
    transform: translateY(-2px);
  }

  .btn-outline {
    border: 2px solid var(--primary);
    color: var(--primary);
  }

  .btn-outline:hover {
    background: var(--primary);
    color: var(--text-inverse);
  }

  .btn-glass {
    background: rgba(15, 23, 42, 0.5);
    backdrop-filter: blur(8px);
    border: 1px solid var(--surface-glass-border);
    color: var(--primary);
    box-shadow: var(--shadow-sm);
  }

  .btn-glass:hover {
    background: rgba(15, 23, 42, 0.8);
    box-shadow: var(--shadow-md);
  }

  .btn-large {
    padding: 16px 32px;
    font-size: 1.05rem;
  }

  .btn-giant {
    padding: 20px 40px;
    font-size: 1.2rem;
  }

  /* Hero Section */
  .hero-section {
    position: relative;
    padding-block: 80px 100px;
    overflow: hidden;
  }

  .hero-backdrop {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    inline-size: 800px;
    block-size: 800px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.15) 0%, rgba(10, 19, 41, 0) 70%);
    z-index: -1;
    animation: pulse-glow 8s ease-in-out infinite alternate;
  }

  @keyframes pulse-glow {
    0% { transform: translate(-50%, -50%) scale(1); opacity: 0.8; }
    100% { transform: translate(-50%, -50%) scale(1.1); opacity: 1; }
  }

  .hero-container {
    max-inline-size: 1200px;
    margin-inline: auto;
    padding-inline: 24px;
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    align-items: center;
    gap: 48px;
  }

  .badge-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: #E0F2FE;
    border: 1px solid #BAE6FD;
    border-radius: var(--radius-pill);
    color: #0369A1;
    font-weight: 700;
    font-size: 0.85rem;
    margin-bottom: 24px;
  }

  .pulse-dot {
    inline-size: 8px;
    block-size: 8px;
    background: #0EA5E9;
    border-radius: 50%;
    box-shadow: 0 0 0 4px rgba(14, 165, 233, 0.25);
  }

  .hero-title {
    font-size: clamp(2.5rem, 1.5rem + 3vw, 4rem);
    letter-spacing: -0.04em;
    margin-bottom: 20px;
  }

  .hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-muted);
    margin-bottom: 36px;
    max-inline-size: 580px;
  }

  .hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 32px;
  }

  .hero-trust {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-muted);
  }

  /* Hero Visual & Glass Cards */
  .hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    perspective: 1200px; /* Add perspective for 3D effect */
  }

  .glass-mockup-frame {
    position: relative;
    border-radius: 32px;
    padding: 24px;
    background: radial-gradient(circle at top left, rgba(56, 189, 248, 0.1), rgba(15, 23, 42, 0.4));
    border: 1px solid rgba(56, 189, 248, 0.2);
    box-shadow: 0 0 40px rgba(6, 182, 212, 0.2), inset 0 0 20px rgba(56, 189, 248, 0.1);
    transform-style: preserve-3d;
    transform: rotateY(-15deg) rotateX(10deg);
    animation: float-3d 6s ease-in-out infinite alternate;
    transition: transform 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  }

  .glass-mockup-frame:hover {
    transform: rotateY(0deg) rotateX(0deg) scale(1.05);
  }

  @keyframes float-3d {
    0% { transform: translateY(0px) rotateY(-15deg) rotateX(10deg); }
    100% { transform: translateY(-20px) rotateY(-5deg) rotateX(5deg); }
  }

  .hero-img {
    border-radius: 24px;
    max-block-size: 400px; /* Adjusted size for 3D icon */
    object-fit: contain;
    filter: drop-shadow(0 20px 30px rgba(0,0,0,0.5));
  }

  .floating-glass-card {
    position: absolute;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(56, 189, 248, 0.25);
    padding: 14px 18px;
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.4);
    display: flex;
    align-items: center;
    gap: 12px;
    transform: translateZ(50px); /* Push out in 3D space */
    animation: float 4s ease-in-out infinite;
  }

  .card-1 {
    bottom: -20px;
    left: -60px;
  }

  .card-2 {
    top: 20px;
    right: -50px;
    animation-delay: -2s;
  }

  .check-icon {
    display: grid;
    place-items: center;
    inline-size: 32px;
    block-size: 32px;
    background: rgba(45, 212, 191, 0.2);
    color: #2DD4BF;
    border-radius: 50%;
    font-weight: 800;
  }

  .badge-icon {
    font-size: 1.5rem;
  }

  /* Features Grid */
  .features-section {
    padding-block: 100px;
    background: var(--bg-color);
  }

  .section-heading {
    text-align: center;
    max-inline-size: 700px;
    margin-inline: auto;
    padding-inline: 24px;
    margin-bottom: 64px;
  }

  .section-heading h2 {
    font-size: clamp(2rem, 1.2rem + 2.5vw, 3rem);
    margin-bottom: 16px;
  }

  .section-heading p {
    font-size: 1.15rem;
    color: var(--text-muted);
  }

  .features-grid {
    max-inline-size: 1200px;
    margin-inline: auto;
    padding-inline: 24px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 32px;
  }

  .feature-card {
    padding: 36px 28px;
    background: var(--surface-card);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid var(--surface-glass-border);
    opacity: 0;
    transform: translateX(100px);
    transition: opacity 0.8s ease-out, transform 0.8s cubic-bezier(0.16, 1, 0.3, 1), background-color 0.3s, border-color 0.3s, box-shadow 0.3s;
  }

  .feature-card.visible {
    opacity: 1;
    transform: translateX(0);
    animation: feature-float 8s ease-in-out infinite;
  }

  .feature-card.visible:nth-child(2n) { animation-delay: -2s; }
  .feature-card.visible:nth-child(3n) { animation-delay: -4s; }
  .feature-card.visible:nth-child(5n) { animation-delay: -6s; }

  @keyframes feature-float {
    0% { translate: 0 0; }
    50% { translate: 0 -8px; }
    100% { translate: 0 0; }
  }

  .feature-card.visible:hover {
    background: rgba(15, 23, 42, 0.8);
    border-color: var(--accent-light);
    box-shadow: 0 0 20px rgba(6, 182, 212, 0.2);
    animation-play-state: paused;
    transform: translateX(0) scale(1.02);
    translate: 0 -12px;
  }

  .feature-icon {
    inline-size: 56px;
    block-size: 56px;
    border-radius: 16px;
    display: grid;
    place-items: center;
    font-size: 1.75rem;
    margin-bottom: 24px;
    border: 1px solid rgba(255,255,255,0.1);
  }

  .bg-blue { background: rgba(30, 58, 138, 0.3); border-color: #3B82F6; }
  .bg-cyan { background: rgba(8, 145, 178, 0.3); border-color: #06B6D4; }
  .bg-indigo { background: rgba(67, 56, 202, 0.3); border-color: #6366F1; }
  .bg-sky { background: rgba(3, 105, 161, 0.3); border-color: #0EA5E9; }
  .bg-violet { background: rgba(109, 40, 217, 0.3); border-color: #8B5CF6; }
  .bg-emerald { background: rgba(5, 150, 105, 0.3); border-color: #10B981; }
  .bg-amber { background: rgba(217, 119, 6, 0.3); border-color: #F59E0B; }
  .bg-rose { background: rgba(225, 29, 72, 0.3); border-color: #F43F5E; }

  .feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
  }

  .feature-card p {
    color: var(--text-muted);
  }

  /* Parallax Showcase */
  .parallax-section {
    padding-block: 100px;
    background: var(--primary);
    color: var(--text-inverse);
  }

  .wrapper {
    max-inline-size: 1200px;
    margin-inline: auto;
    padding-inline: 24px;
    display: grid;
    grid-template-columns: 1fr;
    place-items: center;
    text-align: center;
    position: relative;
    overflow: hidden;
    border-radius: 32px;
  }

  .parallax-feature-img {
    max-block-size: 420px;
    border-radius: 20px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    margin-bottom: 32px;
  }

  .glass-banner {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 48px;
    border-radius: 24px;
    max-inline-size: 800px;
  }

  .glass-banner h2 {
    color: var(--text-inverse);
    font-size: 2.5rem;
    margin-bottom: 16px;
  }

  .glass-banner p {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 32px;
  }

  /* Comparison Section: AI vs Human */
  .comparison-section {
    padding-block: 100px;
    background: var(--bg-color);
    position: relative;
  }

  .comparison-container {
    max-inline-size: 1200px;
    margin-inline: auto;
    padding-inline: 24px;
  }

  .comparison-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    margin-top: 48px;
  }

  .comparison-card {
    background: var(--surface-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 28px;
    padding: 40px;
    box-shadow: var(--shadow-md);
    position: relative;
    border: 1px solid var(--surface-glass-border);
    transition: all 0.3s ease;
  }

  .comparison-card.human-card {
    border-color: rgba(255,255,255,0.05);
    background: rgba(15, 23, 42, 0.4);
  }

  .comparison-card.ai-card {
    border-color: var(--accent);
    box-shadow: 0 20px 45px -10px rgba(6, 182, 212, 0.2);
    background: linear-gradient(180deg, rgba(15,23,42,0.6) 0%, rgba(6,182,212,0.1) 100%);
  }

  .comparison-card h3 {
    font-size: 1.6rem;
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
  }

  .comparison-card p.card-subtitle {
    font-size: 0.95rem;
    color: var(--text-muted);
    margin-bottom: 28px;
  }

  .comparison-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 24px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
  }

  .comparison-item:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
  }

  .comparison-icon {
    inline-size: 32px;
    block-size: 32px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    font-weight: 900;
    flex-shrink: 0;
    font-size: 0.95rem;
    margin-top: 2px;
  }

  .human-card .comparison-icon {
    background: rgba(220, 38, 38, 0.2);
    color: #F87171;
  }

  .ai-card .comparison-icon {
    background: rgba(6, 182, 212, 0.2);
    color: #22D3EE;
  }

  .comparison-text strong {
    display: block;
    font-size: 1.08rem;
    color: var(--text-main);
    margin-bottom: 4px;
  }

  .comparison-text span {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.5;
  }

  .winner-pill {
    position: absolute;
    top: -16px;
    right: 32px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: #0F172A;
    font-weight: 800;
    font-size: 0.8rem;
    padding: 6px 16px;
    border-radius: var(--radius-pill);
    box-shadow: 0 8px 16px rgba(6, 182, 212, 0.3);
    letter-spacing: 0.05em;
    text-transform: uppercase;
  }

  /* Security Showcase */
  .security-section {
    padding-block: 100px;
    background: var(--bg-color);
  }

  .security-container {
    max-inline-size: 1200px;
    margin-inline: auto;
    padding-inline: 24px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 64px;
  }

  .subhead {
    font-weight: 800;
    font-size: 0.85rem;
    color: var(--accent);
    letter-spacing: 0.08em;
    display: block;
    margin-bottom: 12px;
  }

  .security-text h2 {
    font-size: clamp(2rem, 1.2rem + 2vw, 2.75rem);
    margin-bottom: 20px;
  }

  .security-text p {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 28px;
  }

  .check-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 16px;
  }

  .check-list li {
    position: relative;
    padding-left: 32px;
    color: var(--text-muted);
  }

  .check-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    top: 0;
    color: var(--accent);
    font-weight: 900;
  }

  .verified-profile-card {
    background: #FFFFFF;
    border: 1px solid var(--surface-glass-border);
    padding: 32px;
    border-radius: 24px;
    box-shadow: var(--shadow-glass);
    display: flex;
    align-items: center;
    gap: 24px;
  }

  .profile-avatar {
    inline-size: 72px;
    block-size: 72px;
    background: var(--primary);
    color: #FFFFFF;
    border-radius: 50%;
    display: grid;
    place-items: center;
    font-size: 2rem;
    font-weight: 800;
  }

  .verified-badge {
    display: inline-grid;
    place-items: center;
    inline-size: 20px;
    block-size: 20px;
    background: #0284C7;
    color: #FFFFFF;
    border-radius: 50%;
    font-size: 0.75rem;
    vertical-align: middle;
  }

  .status-tag {
    display: inline-block;
    margin-top: 8px;
    padding: 4px 12px;
    border-radius: var(--radius-pill);
    font-size: 0.8rem;
    font-weight: 700;
    background: #DCFCE7;
    color: #166534;
  }

  /* Download CTA */
  .download-section {
    padding-block: 80px 120px;
    padding-inline: 24px;
  }

  .download-card {
    max-inline-size: 1000px;
    margin-inline: auto;
    background: linear-gradient(135deg, #1E3A8A 0%, #0F172A 100%);
    color: #FFFFFF;
    padding: 64px 40px;
    border-radius: 36px;
    text-align: center;
    box-shadow: var(--shadow-glass);
  }

  .download-card h2 {
    color: #FFFFFF;
    font-size: clamp(2.2rem, 1.5rem + 2vw, 3.25rem);
    margin-bottom: 16px;
  }

  .download-card p {
    font-size: 1.2rem;
    opacity: 0.85;
    margin-bottom: 40px;
    max-inline-size: 600px;
    margin-inline: auto;
  }

  .download-buttons {
    display: flex;
    justify-content: center;
    margin-bottom: 24px;
  }

  .compat-note {
    opacity: 0.6;
    font-size: 0.85rem;
  }

  /* Footer */
  .site-footer {
    background: #0B1120;
    color: #94A3B8;
    padding-block: 48px;
    border-top: 1px solid rgba(255,255,255,0.08);
  }

  .footer-container {
    max-inline-size: 1200px;
    margin-inline: auto;
    padding-inline: 24px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
  }

  .footer-left .brand {
    color: #FFFFFF;
    margin-bottom: 8px;
  }

  .footer-icon {
    inline-size: 28px;
    block-size: 28px;
    border-radius: 6px;
  }

  .footer-links {
    display: flex;
    gap: 24px;
  }

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

@layer utilities {
  @keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
  }

  /* Responsive breakpoints */
  @media (max-width: 900px) {
    .hero-container, .security-container, .comparison-grid {
      grid-template-columns: 1fr;
      text-align: center;
    }

    .hero-subtitle {
      margin-inline: auto;
    }

    .hero-actions, .hero-trust {
      justify-content: center;
    }

    .card-1, .card-2 {
      position: static;
      margin-top: 12px;
      animation: none;
    }

    .nav-links {
      display: none;
    }

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