/* /assets/styles.css */
/* Base reset-like tweaks */
* { box-sizing: border-box; margin: 0; padding: 0; }

/* CSS Variables for theming */
:root{
  --bg:#ffffff; --fg:#1f2937; --muted:#475569; --muted-light:#64748b; --primary-700:#1e3a8a; --primary:#3b82f6;
  --card:#fff; --border:#e2e8f0; --shade:#f8fafc; --footer:#1e293b; --footer-border:#334155;
  --success:#059669; --warning:#f59e0b; --danger:#dc2626;
  --shadow-sm:0 1px 2px 0 rgba(0,0,0,0.05);
  --shadow-md:0 4px 6px -1px rgba(0,0,0,0.1);
  --shadow-lg:0 10px 15px -3px rgba(0,0,0,0.1);
  --shadow-xl:0 20px 25px -5px rgba(0,0,0,0.1);
  --gradient-primary:linear-gradient(135deg,var(--primary-700),var(--primary));
  --gradient-accent:linear-gradient(135deg,#667eea 0%,#764ba2 100%);
  --transition-base:all 0.3s cubic-bezier(0.4,0,0.2,1);
}

/* Dark mode support */
@media (prefers-color-scheme: dark){
  :root{
    --bg:#0f172a; --fg:#f1f5f9; --muted:#cbd5e1; --muted-light:#94a3b8;
    --card:#1e293b; --border:#334155; --shade:#1e293b; --footer:#020617; --footer-border:#1e293b;
  }
}

html{scroll-behavior:smooth}
html,body{
  height:100%;
  overflow-x:hidden;
}
body{
  font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;
  line-height:1.6;
  color:var(--fg);
  background:var(--bg);
  transition:background-color 0.3s ease,color 0.3s ease;
}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* Skip link for accessibility */
.skip-link{
  position:absolute;top:-40px;left:0;
  background:var(--primary);color:#fff;
  padding:8px 16px;text-decoration:none;
  border-radius:0 0 4px 0;z-index:100;
}
.skip-link:focus{top:0}

/* Scroll Progress Bar */
.scroll-progress{
  position:fixed;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--primary),#667eea);
  transform-origin:left;transform:scaleX(0);
  z-index:9999;
}

/* Header */
.hdr{
  background:var(--gradient-primary);color:#fff;
  box-shadow:var(--shadow-md);position:sticky;top:0;z-index:1000;
  backdrop-filter:blur(10px);transition:var(--transition-base);
}
.hdr.scrolled{box-shadow:var(--shadow-lg)}
.hdr-content{display:flex;align-items:center;justify-content:space-between;padding:1rem 0}
.logo{
  font-size:1.25rem;font-weight:700;color:#fff;text-decoration:none;
  display:flex;align-items:center;gap:0.5rem;transition:var(--transition-base);
}
.logo:hover{transform:translateY(-2px)}
.logo-icon{flex-shrink:0}
.nav-links{display:flex;list-style:none;gap:2rem;align-items:center}
.nav a{
  color:#fff;text-decoration:none;font-weight:500;opacity:.95;
  position:relative;padding:0.5rem 0;transition:var(--transition-base);
}
.nav a::after{
  content:'';position:absolute;bottom:0;left:0;right:0;
  height:2px;background:#fff;transform:scaleX(0);
  transition:transform 0.3s ease;
}
.nav a:hover{opacity:1}
.nav a:hover::after{transform:scaleX(1)}
.nav-cta{
  background:rgba(255,255,255,0.2);padding:0.5rem 1rem!important;
  border-radius:8px;border:2px solid rgba(255,255,255,0.3);
}
.nav-cta:hover{background:rgba(255,255,255,0.3)}
.nav-cta::after{display:none}
.nav-toggle{
  display:none;background:transparent;border:0;color:#fff;
  font-size:1.5rem;cursor:pointer;padding:0.5rem;
}
.hamburger{
  display:block;width:24px;height:2px;background:#fff;
  position:relative;transition:var(--transition-base);
}
.hamburger::before,.hamburger::after{
  content:'';display:block;width:24px;height:2px;background:#fff;
  position:absolute;left:0;transition:var(--transition-base);
}
.hamburger::before{top:-7px}
.hamburger::after{top:7px}

/* Hero */
.hero{
  background:var(--gradient-primary);color:#fff;text-align:center;
  padding:5rem 0 6rem;position:relative;overflow:hidden;
}
.hero-bg-pattern{
  position:absolute;top:0;left:0;right:0;bottom:0;
  opacity:0.1;background-image:radial-gradient(circle at 25px 25px,rgba(255,255,255,0.2) 2%,transparent 0%),
  radial-gradient(circle at 75px 75px,rgba(255,255,255,0.2) 2%,transparent 0%);
  background-size:100px 100px;pointer-events:none;
}
.hero .container{position:relative;z-index:1}
.hero-badge{
  display:inline-flex;align-items:center;gap:0.5rem;
  background:rgba(255,255,255,0.15);backdrop-filter:blur(10px);
  padding:0.5rem 1rem;border-radius:50px;font-size:0.875rem;
  margin-bottom:1.5rem;border:1px solid rgba(255,255,255,0.2);
  animation:float 3s ease-in-out infinite;
}
.hero-title{font-size:3rem;line-height:1.2;margin-bottom:1rem;font-weight:800}
.hero .subtitle{font-size:1.35rem;opacity:.95;margin-bottom:.75rem}
.hero .description{font-size:1.0625rem;opacity:.92;max-width:800px;margin:.5rem auto 2rem}
.hero-stats{
  display:flex;justify-content:center;gap:3rem;margin-top:3rem;
  flex-wrap:wrap;
}
.stat-item{text-align:center}
.stat-value{font-size:2rem;font-weight:800;line-height:1}
.stat-label{font-size:0.875rem;opacity:0.9;margin-top:0.25rem}
.cta-buttons{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap;align-items:center}
.btn{
  padding:1rem 2rem;border-radius:10px;font-weight:700;
  text-decoration:none;display:inline-flex;align-items:center;gap:0.5rem;
  transition:var(--transition-base);border:0;cursor:pointer;
  box-shadow:var(--shadow-md);position:relative;
}
.btn svg{flex-shrink:0}
.btn-primary{
  background:#fff;color:var(--primary-700);
  box-shadow:0 4px 15px rgba(0,0,0,.2);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 6px 22px rgba(0,0,0,.28);
}
.btn-secondary{
  background:rgba(255,255,255,.2);color:#fff;
  border:2px solid rgba(255,255,255,0.4);
}
.btn-secondary:hover{
  background:rgba(255,255,255,.3);
  border-color:rgba(255,255,255,0.6);
}

/* Animations */
@keyframes float{
  0%,100%{transform:translateY(0)}
  50%{transform:translateY(-10px)}
}
@keyframes pulse{
  0%,100%{box-shadow:0 4px 15px rgba(0,0,0,.2)}
  50%{box-shadow:0 4px 20px rgba(59,130,246,0.4)}
}
.pulse{animation:pulse 2s ease-in-out infinite}
@keyframes fadeInUp{
  from{opacity:0;transform:translateY(30px)}
  to{opacity:1;transform:translateY(0)}
}
.fade-in-up{animation:fadeInUp 0.6s ease-out forwards;opacity:0}
.delay-1{animation-delay:0.1s}
.delay-2{animation-delay:0.2s}
.delay-3{animation-delay:0.3s}

/* Trust bar */
.trust-bar{background:var(--shade);padding:2rem 0;border-bottom:1px solid var(--border)}
.trust-items{display:flex;justify-content:center;gap:3rem;flex-wrap:wrap;align-items:center}
.trust-item{display:flex;align-items:center;gap:.6rem;color:var(--fg);font-weight:500}
.trust-icon{font-size:1.4rem}

/* Sections */
.section-header{text-align:center;margin-bottom:2rem}
.section-header h2{font-size:2.25rem;color:var(--primary-700);margin-bottom:.6rem}
.section-header p{color:var(--muted);max-width:720px;margin:0 auto}

/* Use cases */
.use-cases{padding:4rem 0;background:#fff}
.use-case-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:1.5rem;margin-top:2rem}
.use-case-card{
  padding:2rem;border-radius:12px;border:2px solid var(--border);
  background:var(--card);transition:.2s;box-shadow:var(--shadow-sm);
}
.use-case-card:hover{border-color:var(--primary);box-shadow:0 10px 30px rgba(59,130,246,.12);transform:translateY(-3px)}
.use-case-icon{font-size:2.2rem;margin-bottom:.5rem}
.use-case-benefits{list-style:none;color:#059669;font-weight:600}
.use-case-benefits li{display:flex;gap:.5rem;align-items:center;padding:.35rem 0}
.use-case-benefits li::before{content:"✓";font-weight:700}

/* Features */
.features{padding:4rem 0;background:var(--shade)}
.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.5rem}
.feature-card{background:var(--card);padding:1.5rem;border-radius:12px;box-shadow:0 4px 6px rgba(0,0,0,.05)}
.feature-card h3{font-size:1.1rem;color:var(--primary-700);margin-bottom:.5rem;display:flex;gap:.6rem;align-items:center}
.feature-icon{font-size:1.3rem}

/* Performance */
.performance{padding:4rem 0;background:linear-gradient(135deg,var(--primary-700),var(--primary));color:#fff}
.text-white{color:#fff}
.text-white-soft{color:rgba(255,255,255,.92)}
.performance-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1rem;margin-top:2rem}
.stat-card{text-align:center;padding:1.6rem;background:rgba(255,255,255,.12);border-radius:12px;backdrop-filter:blur(8px)}
.stat-number{font-size:2.3rem;font-weight:800;margin-bottom:.25rem}
.stat-label{opacity:.95}

/* Pricing */
.pricing{padding:4rem 0;background:#fff}
.pricing-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.5rem;margin-top:2rem}
.pricing-card{
  border:2px solid var(--border);border-radius:12px;padding:2rem;
  text-align:center;transition:.2s;background:var(--card);
  box-shadow:var(--shadow-sm);
}
.pricing-card.featured{border-color:var(--primary);box-shadow:0 10px 30px rgba(59,130,246,.15);transform:scale(1.02)}
.plan-name{font-size:1.25rem;color:var(--primary-700);font-weight:800;margin-bottom:.5rem}
.plan-price{font-size:2.3rem;font-weight:800;color:var(--primary);margin-bottom:.25rem}
.plan-period{color:var(--muted);margin-bottom:1rem}
.plan-features{list-style:none;margin:1rem 0 1.25rem;text-align:left}
.plan-features li{padding:.55rem 0;border-bottom:1px solid var(--border);color:var(--fg)}
.plan-features li::before{content:"✓ ";color:var(--success);font-weight:800}

/* Testimonials */
.testimonials{padding:4rem 0;background:var(--shade)}
.testimonial-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:1.25rem;margin-top:2rem}
.testimonial-card{
  background:var(--card);padding:1.5rem;border-radius:12px;
  box-shadow:var(--shadow-sm);transition:var(--transition-base);
  border:1px solid var(--border);
}
.testimonial-card:hover{
  box-shadow:var(--shadow-md);
  transform:translateY(-5px);
}
.rating{
  display:flex;gap:0.25rem;margin-bottom:1rem;color:#fbbf24;
}
.testimonial-text{
  font-style:italic;color:var(--muted);margin-bottom:1rem;
  line-height:1.8;position:relative;
}
.testimonial-text::before{
  content:'"';font-size:3rem;position:absolute;
  top:-10px;left:-10px;color:var(--primary);opacity:0.2;
  font-family:Georgia,serif;
}
.author-info h4{color:var(--primary-700);font-weight:700;margin-bottom:0.25rem}
.author-info p{color:var(--muted);font-size:.9rem}

/* Comparison Table */
.comparison{padding:4rem 0;background:#fff}
.comparison-table-wrapper{overflow-x:auto;margin-top:2rem}
.comparison-table{
  width:100%;border-collapse:collapse;
  box-shadow:var(--shadow-lg);border-radius:12px;overflow:hidden;
}
.comparison-table thead{background:var(--gradient-primary);color:#fff}
.comparison-table th{
  padding:1.25rem 1rem;text-align:left;font-weight:700;
  white-space:nowrap;
}
.comparison-table td{
  padding:1rem;border-bottom:1px solid var(--border);
  background:var(--bg);
}
.comparison-table tbody tr:hover{background:var(--shade)}
.highlight-col{
  background:rgba(59,130,246,0.05)!important;
  font-weight:700;position:relative;
}
.comparison-table thead .highlight-col{
  background:rgba(255,255,255,0.2)!important;
  position:relative;
}
.comparison-table thead .highlight-col::after{
  content:'⭐ BEST VALUE';position:absolute;top:-10px;right:10px;
  font-size:0.625rem;background:#fbbf24;color:#78350f;
  padding:2px 6px;border-radius:4px;font-weight:800;
}
.comparison-table .check{
  color:var(--success);display:flex;align-items:center;gap:0.5rem;
}
.comparison-table .check::before{
  content:'✓';font-weight:800;font-size:1.2rem;
}
.comparison-table .cross{
  color:var(--muted);display:flex;align-items:center;gap:0.5rem;
}
.comparison-table .cross::before{
  content:'✗';font-weight:800;font-size:1.2rem;color:#cbd5e1;
}
.comparison-table .strong{font-weight:700;color:var(--primary-700)}

/* FAQ Section */
.faq-section{padding:4rem 0;background:var(--shade)}
.faq-container{max-width:800px;margin:2rem auto 0}
.faq-item{
  background:var(--card);border-radius:12px;margin-bottom:1rem;
  box-shadow:var(--shadow-sm);overflow:hidden;
  transition:var(--transition-base);
}
.faq-item:hover{box-shadow:var(--shadow-md)}
.faq-question{
  width:100%;text-align:left;background:none;border:0;
  padding:1.25rem 1.5rem;font-size:1.0625rem;font-weight:600;
  color:var(--fg);cursor:pointer;display:flex;
  justify-content:space-between;align-items:center;gap:1rem;
  transition:var(--transition-base);
}
.faq-question:hover{background:var(--shade)}
.faq-icon{
  flex-shrink:0;transition:transform 0.3s ease;
  color:var(--primary);
}
.faq-question[aria-expanded="true"] .faq-icon{
  transform:rotate(180deg);
}
.faq-answer{
  max-height:0;overflow:hidden;
  transition:max-height 0.3s ease,padding 0.3s ease;
}
.faq-answer.open{
  max-height:500px;padding:0 1.5rem 1.25rem;
}
.faq-answer p{
  color:var(--muted);line-height:1.7;
}

/* Final CTA */
.final-cta{
  padding:4rem 0;background:var(--gradient-primary);
  color:#fff;text-align:center;
}
.guarantee-badge{
  margin-top:2rem;display:inline-flex;align-items:center;
  gap:0.5rem;font-size:0.875rem;opacity:0.95;
  background:rgba(255,255,255,0.1);padding:0.75rem 1.5rem;
  border-radius:50px;border:1px solid rgba(255,255,255,0.2);
}
.center{text-align:center}
.muted{color:var(--muted)}

/* Back to Top Button */
.back-to-top{
  position:fixed;bottom:2rem;right:2rem;
  width:50px;height:50px;border-radius:50%;
  background:var(--primary);color:#fff;border:0;
  cursor:pointer;box-shadow:var(--shadow-lg);
  display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;
  transition:var(--transition-base);z-index:999;
}
.back-to-top.visible{opacity:1;visibility:visible}
.back-to-top:hover{
  transform:translateY(-5px);
  box-shadow:var(--shadow-xl);
  background:var(--primary-700);
}
.back-to-top:active{transform:translateY(-2px)}

/* Footer */
.ftr{background:var(--footer);color:#fff;padding:2.5rem 0 1.2rem}
.footer-content{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1.25rem;margin-bottom:1.25rem}
.footer-section h3{margin-bottom:.5rem}
.footer-section ul{list-style:none}
.footer-section a{color:#94a3b8;text-decoration:none;display:block;padding:.2rem 0;transition:.2s}
.footer-section a:hover{color:#fff}
.footer-bottom{border-top:1px solid var(--footer-border);padding-top:1rem;color:#94a3b8}

/* Utilities + responsive */
@media (max-width: 820px){
  .nav-toggle{display:inline-block}
  .nav{
    position:absolute;top:64px;right:20px;
    background:rgba(30,41,59,0.95);backdrop-filter:blur(10px);
    padding:1rem;border-radius:12px;display:none;
    box-shadow:var(--shadow-xl);
  }
  .nav.open{display:block}
  .nav-links{flex-direction:column;gap:0.5rem}
  .nav a{padding:0.75rem 1rem;display:block;border-radius:8px}
  .nav a:hover{background:rgba(255,255,255,0.1)}
  .hero-title{font-size:2rem}
  .hero{padding:3rem 0 4rem}
  .hero-stats{gap:2rem}
  .stat-value{font-size:1.5rem}
  .cta-buttons{flex-direction:column;width:100%}
  .btn{width:100%;justify-content:center}
  .use-case-grid,.feature-grid,.pricing-grid,.testimonial-grid{
    grid-template-columns:1fr;
  }
  .performance-stats{grid-template-columns:1fr 1fr}
  .stat-number{font-size:1.8rem}
  .comparison-table{font-size:0.875rem}
  .comparison-table th,.comparison-table td{padding:0.75rem 0.5rem}
  .back-to-top{bottom:1rem;right:1rem;width:45px;height:45px}
}

/* Focus styles for accessibility */
*:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:2px;
  border-radius:4px;
}

/* Screen reader only content */
.sr-only{
  position:absolute;
  width:1px;height:1px;
  margin:-1px;padding:0;
  overflow:hidden;
  clip:rect(0,0,0,0);
  white-space:nowrap;
  border:0;
}

/* Fade-in animations for cards */
.fade-in-item {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.fade-in-item.animate-in {
  opacity: 1;
  transform: translateY(0);
}

/* Smooth scrolling with reduced motion support */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:0.01ms!important;
    animation-iteration-count:1!important;
    transition-duration:0.01ms!important;
  }
  html{scroll-behavior:auto}
}

/* Back button + breadcrumb */
.page-utility{display:flex;align-items:center;justify-content:space-between;gap:1rem;margin:1rem 0 2rem}
.back-btn{display:inline-flex;align-items:center;gap:.5rem;border:1px solid var(--border);background:var(--card);padding:.6rem .9rem;border-radius:10px;text-decoration:none;color:var(--fg);box-shadow:var(--shadow-sm)}
.back-btn:hover{transform:translateY(-1px);box-shadow:var(--shadow-md)}
.breadcrumb{font-size:.95rem;color:var(--muted)}
.breadcrumb a{color:var(--muted);text-decoration:none}
.breadcrumb a:hover{text-decoration:underline;color:var(--fg)}
.breadcrumb .sep{opacity:.6;margin:0 .35rem}

/* Content page typography */
.main-narrow{padding:3rem 0;max-width:900px}
.main-narrow h1{color:var(--primary-700);margin-bottom:.75rem}
.main-narrow h2{margin-top:1.5rem;margin-bottom:.4rem;color:var(--fg)}
.main-narrow h3{margin-top:1rem;margin-bottom:.3rem;color:var(--fg)}
.main-narrow p{margin:.4rem 0;color:var(--fg)}
.main-narrow ul{margin:.5rem 0 1rem 1.25rem;color:var(--fg)}
.main-narrow code{background:var(--shade);padding:0.125rem 0.25rem;border-radius:4px;font-size:0.875em}
.notice{background:rgba(59,130,246,0.1);border:1px solid rgba(59,130,246,0.3);border-radius:10px;padding:1rem;color:var(--fg);margin:1rem 0}