/* Neural Labs - Enhanced Vibrant Modern Design */

:root{
  /* Color Palette - Vibrant & Modern */
  --primary:#6366f1;
  --primary-dark:#4f46e5;
  --secondary:#8b5cf6;
  --accent:#ec4899;
  --cyan:#06b6d4;
  --emerald:#10b981;
  --orange:#f59e0b;
  --bg-dark:#0f172a;
  --bg-darker:#020617;
  --card-bg:#1e293b;
  --text-light:#f1f5f9;
  --text-muted:#94a3b8;
  --border:rgba(255,255,255,0.1);
  
  /* Gradients */
  --gradient-primary:linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  --gradient-accent:linear-gradient(135deg, #ec4899 0%, #f59e0b 100%);
  --gradient-cyan:linear-gradient(135deg, #06b6d4 0%, #10b981 100%);
  --gradient-hero:linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #ec4899 100%);
  
  /* Spacing & Typography */
  --radius:20px;
  --radius-sm:12px;
  --maxw:1200px;
  --font: 'Inter', system-ui, -apple-system, sans-serif;
}

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

html{
  scroll-behavior:smooth;
  font-size:16px;
}

body{
  font-family:var(--font);
  background:
    radial-gradient(circle at 20% 20%, rgba(99,102,241,0.15), transparent 40%),
    radial-gradient(circle at 80% 80%, rgba(139,92,246,0.15), transparent 40%),
    radial-gradient(circle at 50% 50%, rgba(236,72,153,0.08), transparent 50%),
    linear-gradient(180deg, #0f172a 0%, #020617 100%);
  color:var(--text-light);
  min-height:100vh;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}

.wrap{
  max-width:var(--maxw);
  margin:0 auto;
  padding:20px;
}

/* Header & Navigation */
header{
  background:rgba(30,41,59,0.8);
  backdrop-filter:blur(20px);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:20px 30px;
  margin:20px 0 40px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  position:sticky;
  top:20px;
  z-index:100;
  box-shadow:0 8px 32px rgba(0,0,0,0.4);
}

.brand{
  display:flex;
  align-items:center;
  gap:16px;
}

.brand a{
  display:block;
  transition:transform 0.3s ease;
  text-decoration:none;
}

.brand a:hover{
  transform:scale(1.05);
}

.logo{
  height:55px;
  width:auto;
  max-width:350px;
  filter:brightness(1.1) drop-shadow(0 4px 12px rgba(99,102,241,0.3));
}

nav{
  display:flex;
  gap:8px;
  align-items:center;
  flex-wrap:wrap;
}

nav a{
  color:var(--text-muted);
  text-decoration:none;
  font-weight:600;
  font-size:15px;
  padding:10px 18px;
  border-radius:var(--radius-sm);
  transition:all 0.3s ease;
  position:relative;
}

nav a:hover{
  color:var(--text-light);
  background:rgba(99,102,241,0.1);
  transform:translateY(-2px);
}

nav a.active{
  color:var(--text-light);
  background:var(--gradient-primary);
  box-shadow:0 4px 16px rgba(99,102,241,0.4);
}

.btn{
  background:var(--gradient-primary);
  padding:12px 24px;
  border-radius:var(--radius-sm);
  color:white !important;
  text-decoration:none;
  font-weight:700;
  font-size:15px;
  box-shadow:0 8px 24px rgba(99,102,241,0.3);
  transition:all 0.3s ease;
  display:inline-block;
  border:none;
  cursor:pointer;
}

.btn:hover{
  transform:translateY(-3px);
  box-shadow:0 12px 32px rgba(99,102,241,0.5);
}

.btn-secondary{
  background:var(--gradient-accent);
  box-shadow:0 8px 24px rgba(236,72,153,0.3);
}

.btn-secondary:hover{
  box-shadow:0 12px 32px rgba(236,72,153,0.5);
}

/* Hero Section */
.hero-section{
  text-align:center;
  padding:80px 20px 60px 20px;
  position:relative;
  overflow:hidden;
}

.hero-section::before{
  content:'';
  position:absolute;
  top:50%;
  left:50%;
  transform:translate(-50%, -50%);
  width:800px;
  height:800px;
  background:var(--gradient-hero);
  border-radius:50%;
  opacity:0.1;
  filter:blur(100px);
  animation:pulse 8s ease-in-out infinite;
}

@keyframes pulse{
  0%, 100%{transform:translate(-50%, -50%) scale(1)}
  50%{transform:translate(-50%, -50%) scale(1.2)}
}

.hero-section h1{
  font-size:64px;
  font-weight:900;
  margin:0 0 24px 0;
  background:var(--gradient-hero);
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
  line-height:1.1;
  position:relative;
  animation:fadeInUp 0.8s ease;
}

@keyframes fadeInUp{
  from{opacity:0; transform:translateY(30px)}
  to{opacity:1; transform:translateY(0)}
}

.hero-section .subtitle{
  font-size:22px;
  color:var(--text-muted);
  max-width:700px;
  margin:0 auto 32px auto;
  line-height:1.6;
  animation:fadeInUp 0.8s ease 0.2s backwards;
}

.hero-tags{
  display:flex;
  gap:12px;
  justify-content:center;
  flex-wrap:wrap;
  margin-bottom:32px;
  animation:fadeInUp 0.8s ease 0.4s backwards;
}

.tag{
  display:inline-block;
  padding:8px 20px;
  border-radius:999px;
  background:rgba(99,102,241,0.1);
  border:1px solid rgba(99,102,241,0.3);
  color:var(--primary);
  font-weight:700;
  font-size:13px;
  text-transform:uppercase;
  letter-spacing:1px;
}

.tag.pink{
  background:rgba(236,72,153,0.1);
  border-color:rgba(236,72,153,0.3);
  color:var(--accent);
}

.tag.cyan{
  background:rgba(6,182,212,0.1);
  border-color:rgba(6,182,212,0.3);
  color:var(--cyan);
}

/* Trust Badges */
.trust-badge{
  display:inline-block;
  padding:10px 24px;
  border-radius:999px;
  background:rgba(99,102,241,0.1);
  border:1px solid rgba(99,102,241,0.2);
  color:var(--text-light);
  font-weight:600;
  font-size:14px;
  transition:all 0.3s ease;
}

.trust-badge:hover{
  background:rgba(99,102,241,0.2);
  border-color:rgba(99,102,241,0.4);
  transform:translateY(-2px);
}

/* Content Sections */
.section{
  margin:60px 0;
  animation:fadeInUp 0.6s ease;
}

.section-header{
  text-align:center;
  margin-bottom:48px;
}

.section-header h2{
  font-size:48px;
  font-weight:800;
  margin:0 0 16px 0;
  background:var(--gradient-primary);
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
}

.section-header p{
  font-size:20px;
  color:var(--text-muted);
  max-width:700px;
  margin:0 auto;
}

.card{
  background:rgba(30,41,59,0.6);
  backdrop-filter:blur(20px);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:32px;
  transition:all 0.3s ease;
  box-shadow:0 8px 32px rgba(0,0,0,0.2);
}

.card:hover{
  transform:translateY(-8px);
  border-color:rgba(99,102,241,0.5);
  box-shadow:0 16px 48px rgba(99,102,241,0.2);
}

.card h3{
  font-size:28px;
  margin:0 0 16px 0;
  color:var(--text-light);
}

.card p{
  color:var(--text-muted);
  line-height:1.8;
  margin-bottom:12px;
}

/* Grid Layouts */
.grid-2{
  display:grid;
  grid-template-columns:repeat(2, 1fr);
  gap:32px;
}

.grid-3{
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:28px;
}

.grid-4{
  display:grid;
  grid-template-columns:repeat(4, 1fr);
  gap:24px;
}

/* Feature Cards */
.feature-card{
  background:rgba(30,41,59,0.6);
  backdrop-filter:blur(20px);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:28px;
  transition:all 0.3s ease;
  position:relative;
  overflow:hidden;
}

.feature-card::before{
  content:'';
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:4px;
  background:var(--gradient-primary);
  opacity:0;
  transition:opacity 0.3s ease;
}

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

.feature-card:hover{
  transform:translateY(-6px);
  border-color:rgba(99,102,241,0.5);
  box-shadow:0 16px 48px rgba(99,102,241,0.2);
}

.feature-icon{
  width:60px;
  height:60px;
  border-radius:16px;
  background:var(--gradient-primary);
  display:grid;
  place-items:center;
  margin-bottom:20px;
  font-size:28px;
  box-shadow:0 8px 24px rgba(99,102,241,0.3);
  animation:float 3s ease-in-out infinite;
}

@keyframes float{
  0%, 100%{transform:translateY(0px)}
  50%{transform:translateY(-8px)}
}

.feature-card h4{
  font-size:20px;
  margin:0 0 12px 0;
  color:var(--text-light);
}

.feature-card p{
  color:var(--text-muted);
  line-height:1.7;
  font-size:15px;
}

/* Stats Section */
.stats-grid{
  display:grid;
  grid-template-columns:repeat(4, 1fr);
  gap:24px;
  margin:48px 0;
}

.stat-card{
  background:rgba(30,41,59,0.6);
  backdrop-filter:blur(20px);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:32px;
  text-align:center;
  position:relative;
  overflow:hidden;
  transition:all 0.3s ease;
}

.stat-card::before{
  content:'';
  position:absolute;
  top:0;
  left:0;
  width:100%;
  height:3px;
  background:var(--gradient-primary);
}

.stat-card:hover{
  transform:translateY(-4px);
  box-shadow:0 12px 40px rgba(99,102,241,0.3);
}

.stat-number{
  font-size:48px;
  font-weight:900;
  background:var(--gradient-primary);
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
  margin-bottom:8px;
}

.stat-label{
  color:var(--text-muted);
  font-size:14px;
  text-transform:uppercase;
  letter-spacing:1px;
  font-weight:600;
}

/* Testimonials */
.testimonial-card{
  background:rgba(30,41,59,0.6);
  backdrop-filter:blur(20px);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:28px;
  transition:all 0.3s ease;
  position:relative;
}

.testimonial-card::before{
  content:'"';
  position:absolute;
  top:20px;
  left:20px;
  font-size:80px;
  font-family:Georgia, serif;
  color:rgba(99,102,241,0.1);
  line-height:1;
}

.testimonial-card:hover{
  transform:translateY(-8px);
  border-color:rgba(99,102,241,0.5);
  box-shadow:0 16px 48px rgba(99,102,241,0.2);
}

.stars{
  font-size:20px;
  margin-bottom:16px;
}

.testimonial-card p{
  color:var(--text-light);
  line-height:1.8;
  font-size:16px;
  margin-bottom:24px;
  position:relative;
  font-style:italic;
}

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

.author-avatar{
  width:48px;
  height:48px;
  border-radius:50%;
  display:grid;
  place-items:center;
  font-size:18px;
  font-weight:800;
  color:white;
  flex-shrink:0;
}

.author strong{
  display:block;
  color:var(--text-light);
  font-size:15px;
  margin-bottom:2px;
}

.author span{
  display:block;
  color:var(--text-muted);
  font-size:13px;
}

/* Tech Badges */
.tech-badge{
  display:inline-block;
  padding:6px 14px;
  border-radius:6px;
  background:rgba(99,102,241,0.1);
  border:1px solid rgba(99,102,241,0.3);
  color:var(--primary);
  font-size:12px;
  font-weight:600;
}

/* FAQ */
.faq-item{
  background:rgba(30,41,59,0.6);
  backdrop-filter:blur(20px);
  border:1px solid var(--border);
  border-radius:var(--radius-sm);
  padding:20px 24px;
  margin-bottom:16px;
  cursor:pointer;
  transition:all 0.3s ease;
}

.faq-item:hover{
  border-color:rgba(99,102,241,0.5);
  background:rgba(30,41,59,0.8);
}

.faq-item[open]{
  border-color:rgba(99,102,241,0.6);
  box-shadow:0 8px 24px rgba(99,102,241,0.2);
}

.faq-item summary{
  font-weight:700;
  font-size:18px;
  color:var(--text-light);
  cursor:pointer;
  list-style:none;
  display:flex;
  align-items:center;
  justify-content:space-between;
}

.faq-item summary::-webkit-details-marker{
  display:none;
}

.faq-item summary::after{
  content:'→';
  font-size:20px;
  transition:transform 0.3s ease;
  color:var(--primary);
}

.faq-item[open] summary::after{
  transform:rotate(90deg);
}

.faq-item p{
  margin-top:16px;
  color:var(--text-muted);
  line-height:1.8;
  font-size:15px;
}

/* CTA Section */
.cta-section{
  background:var(--gradient-hero);
  border-radius:var(--radius);
  padding:60px 40px;
  text-align:center;
  position:relative;
  overflow:hidden;
  margin:80px 0;
}

.cta-section::before{
  content:'';
  position:absolute;
  top:0;
  left:0;
  right:0;
  bottom:0;
  background:url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="20" height="20" patternUnits="userSpaceOnUse"><path d="M 20 0 L 0 0 0 20" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
  opacity:0.3;
}

.cta-section h2{
  font-size:48px;
  font-weight:900;
  color:white;
  margin:0 0 16px 0;
  position:relative;
}

.cta-section p{
  font-size:20px;
  color:rgba(255,255,255,0.9);
  margin:0 0 32px 0;
  position:relative;
}

.cta-buttons{
  display:flex;
  gap:16px;
  justify-content:center;
  flex-wrap:wrap;
  position:relative;
}

.btn-white{
  background:white;
  color:var(--primary) !important;
  box-shadow:0 8px 32px rgba(0,0,0,0.2);
}

.btn-white:hover{
  background:rgba(255,255,255,0.95);
  transform:translateY(-3px);
  box-shadow:0 12px 40px rgba(0,0,0,0.3);
}

/* Footer */
footer{
  margin-top:80px;
  padding:40px 0 20px 0;
  border-top:1px solid var(--border);
  text-align:center;
}

footer p{
  color:var(--text-muted);
  font-size:14px;
  margin:8px 0;
}

footer a{
  color:var(--primary);
  text-decoration:none;
  transition:color 0.3s ease;
}

footer a:hover{
  color:var(--accent);
}

/* Responsive Design */
@media (max-width: 1024px){
  .grid-4{grid-template-columns:repeat(2, 1fr)}
  .stats-grid{grid-template-columns:repeat(2, 1fr)}
  .hero-section h1{font-size:48px}
}

@media (max-width: 768px){
  header{
    flex-direction:column;
    align-items:flex-start;
    position:relative;
    top:0;
  }
  nav{width:100%; justify-content:space-between}
  .grid-2, .grid-3, .grid-4, .stats-grid{
    grid-template-columns:1fr;
  }
  .hero-section h1{font-size:36px}
  .hero-section .subtitle{font-size:18px}
  .section-header h2{font-size:36px}
  .logo{max-width:280px; height:auto}
}

@media (max-width: 480px){
  .hero-section h1{font-size:28px}
  .section-header h2{font-size:28px}
  .cta-section h2{font-size:32px}
  .stat-number{font-size:36px}
}

/* Utilities */
.text-center{text-align:center}
.mt-4{margin-top:48px}
.mb-4{margin-bottom:48px}