/* ============================================
   NeuroSharp™ — Main Stylesheet
   Version: 1.0 | May 2026
   Deep Indigo + Electric Blue Neuroscience Theme
   Mobile-First Responsive Design
   ============================================ */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Sora:wght@300;400;500;600;700;800&display=swap');

*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}
:root{
  --indigo:#1E1B4B;--indigo-mid:#312E81;--electric:#3B82F6;--cyan:#06B6D4;--white:#FFFFFF;
  --off:#F0F4FF;--slate:#1E293B;--body:#475569;--light:#94A3B8;--gold:#F59E0B;
  --neon:#818CF8;--mint:#34D399;
  --grad:linear-gradient(135deg,#3B82F6 0%,#06B6D4 100%);
  --grad-dark:linear-gradient(135deg,#1E1B4B 0%,#312E81 50%,#1E3A5F 100%);
  --grad-glow:linear-gradient(135deg,#818CF8 0%,#06B6D4 50%,#34D399 100%);
  --glass:rgba(255,255,255,0.06);
  --radius:18px;--radius-sm:12px;--radius-full:50px;
  --shadow:0 4px 24px rgba(30,27,75,.06);--shadow-lg:0 20px 60px rgba(30,27,75,.1);
  --shadow-glow:0 0 40px rgba(59,130,246,.15);
  --transition:all .3s cubic-bezier(.4,0,.2,1);
}
html{scroll-behavior:smooth;font-size:16px;-webkit-text-size-adjust:100%}
body{font-family:'Space Grotesk',sans-serif;color:var(--body);background:var(--white);line-height:1.7;overflow-x:hidden}
h1,h2,h3,h4,h5{font-family:'Sora',sans-serif;color:var(--indigo);line-height:1.25;font-weight:700}
a{text-decoration:none;color:inherit;transition:color .3s}
img{max-width:100%;height:auto;display:block}
.container{max-width:1140px;margin:0 auto;padding:0 1.5rem}
section{padding:4rem 1rem}

/* Utilities */
.section-label{font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.18em;background:var(--grad-glow);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:.5rem;display:inline-block}
.section-title{font-size:clamp(1.6rem,4.5vw,2.5rem);margin-bottom:1rem}
.section-desc{font-size:1.05rem;color:var(--body);max-width:720px;margin-bottom:2.5rem}
.hl{background:var(--grad);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.link-self{color:var(--electric);font-weight:600}
.link-self:hover{text-decoration:underline}
.bg-off{background:var(--off)}
.bg-dark{background:var(--grad-dark);color:rgba(255,255,255,.9)}
.bg-dark h2,.bg-dark h3,.bg-dark .section-title{color:#fff}
.bg-dark .section-desc{color:rgba(255,255,255,.75)}

/* === NAV === */
nav{position:fixed;top:0;width:100%;z-index:1000;background:rgba(30,27,75,.92);backdrop-filter:blur(24px);border-bottom:1px solid rgba(255,255,255,.06);padding:.7rem 0;transition:var(--transition)}
nav.scrolled{box-shadow:0 4px 30px rgba(0,0,0,.2)}
.nav-inner{max-width:1200px;margin:0 auto;padding:0 1.5rem;display:flex;align-items:center;justify-content:space-between}
.logo{font-family:'Sora',sans-serif;font-size:1.4rem;font-weight:800;color:#fff}
.logo span{background:var(--grad-glow);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.nav-links{display:flex;gap:1.3rem;align-items:center}
.nav-links a{font-size:.84rem;font-weight:500;color:rgba(255,255,255,.75)}
.nav-links a:hover{color:#fff}
.nav-cta{background:var(--grad);color:white!important;padding:.55rem 1.3rem;border-radius:var(--radius-full);font-weight:600;font-size:.84rem;box-shadow:0 4px 20px rgba(59,130,246,.3)}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(59,130,246,.45)}
.mobile-toggle{display:none;background:none;border:none;font-size:1.5rem;cursor:pointer;color:#fff;min-width:48px;min-height:48px}

/* === CTA BTN === */
.cta-btn{display:inline-flex;align-items:center;gap:.6rem;background:var(--grad);color:white;padding:1rem 2.2rem;border-radius:var(--radius-full);font-weight:700;font-size:1rem;transition:var(--transition);box-shadow:0 4px 24px rgba(59,130,246,.3);border:none;cursor:pointer;text-transform:uppercase;letter-spacing:.04em;min-height:48px;text-align:center;justify-content:center;position:relative;overflow:hidden}
.cta-btn::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(255,255,255,.15),transparent);opacity:0;transition:opacity .3s}
.cta-btn:hover{transform:translateY(-3px);box-shadow:0 12px 40px rgba(59,130,246,.45);color:white}
.cta-btn:hover::before{opacity:1}
.cta-btn:active{transform:scale(.98)}

/* === HERO === */
.hero{padding:7rem 1rem 3rem;background:var(--grad-dark);position:relative;overflow:hidden;min-height:90vh;display:flex;align-items:center}
.hero::before{content:'';position:absolute;top:-30%;right:-15%;width:700px;height:700px;background:radial-gradient(circle,rgba(59,130,246,.12) 0%,transparent 65%);border-radius:50%;animation:pulse-glow 8s ease-in-out infinite}
.hero::after{content:'';position:absolute;bottom:-20%;left:-10%;width:500px;height:500px;background:radial-gradient(circle,rgba(6,182,212,.08) 0%,transparent 60%);border-radius:50%;animation:pulse-glow 10s ease-in-out infinite 2s}
@keyframes pulse-glow{0%,100%{transform:scale(1);opacity:.6}50%{transform:scale(1.15);opacity:1}}
.hero-inner{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:1fr;gap:2rem;align-items:center;position:relative;z-index:2}
.hero-text h1{font-size:clamp(1.8rem,5.5vw,3.2rem);color:#fff;margin-bottom:1rem;line-height:1.15}
.hero-text h1 span{background:var(--grad-glow);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.hero-text .sub{font-size:1.05rem;color:rgba(255,255,255,.75);margin-bottom:1.5rem;max-width:540px;line-height:1.7}
.hero-badges{display:flex;gap:.5rem;flex-wrap:wrap;margin-bottom:1.5rem}
.badge{display:flex;align-items:center;gap:.35rem;background:rgba(255,255,255,.08);backdrop-filter:blur(10px);padding:.45rem .75rem;border-radius:var(--radius-full);font-size:.73rem;font-weight:600;color:rgba(255,255,255,.9);border:1px solid rgba(255,255,255,.1)}
.badge svg{width:14px;height:14px;fill:var(--mint)}
.hero-stats{display:flex;gap:1.5rem;margin-bottom:1.5rem;flex-wrap:wrap}
.stat{text-align:center}
.stat .num{font-family:'Sora',sans-serif;font-size:clamp(1.3rem,3vw,1.8rem);color:#fff;display:block;font-weight:800}
.stat .label{font-size:.7rem;color:rgba(255,255,255,.55);font-weight:500;text-transform:uppercase;letter-spacing:.06em}
.hero-img{text-align:center;position:relative}
.hero-img img{max-height:340px;margin:0 auto;filter:drop-shadow(0 30px 60px rgba(0,0,0,.3));animation:float 6s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-18px)}}
/* Neuron particle effect container */
.hero-particles{position:absolute;inset:0;overflow:hidden;pointer-events:none}
.particle{position:absolute;width:4px;height:4px;background:var(--neon);border-radius:50%;opacity:.3;animation:drift 12s linear infinite}
@keyframes drift{0%{transform:translateY(100vh) translateX(0);opacity:0}10%{opacity:.4}90%{opacity:.4}100%{transform:translateY(-10vh) translateX(80px);opacity:0}}

/* === TRUST BAR === */
.trust-bar{background:rgba(30,27,75,.97);padding:1.3rem 1rem;border-top:1px solid rgba(255,255,255,.05)}
.trust-inner{max-width:1100px;margin:0 auto;display:flex;justify-content:center;gap:1.2rem;flex-wrap:wrap;align-items:center}
.trust-item{display:flex;align-items:center;gap:.45rem}
.trust-item img{width:32px;height:32px;border-radius:6px}
.trust-item span{color:rgba(255,255,255,.85);font-size:.78rem;font-weight:600}

/* === ABOUT / WHAT IS === */
.about-grid{display:grid;grid-template-columns:1fr;gap:2rem;align-items:center}
.about-img img{border-radius:20px;box-shadow:var(--shadow-lg);max-width:320px;margin:0 auto}

/* === MECHANISM / HOW IT WORKS === */
.mechanism-grid{display:grid;grid-template-columns:1fr;gap:1rem}
.mech-card{background:rgba(255,255,255,.04);backdrop-filter:blur(8px);border-radius:var(--radius);padding:1.5rem;border:1px solid rgba(255,255,255,.08);transition:var(--transition);position:relative;overflow:hidden}
.mech-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-glow);border-color:rgba(59,130,246,.3)}
.mech-card .num{font-family:'Sora',sans-serif;font-size:2.5rem;color:rgba(59,130,246,.1);position:absolute;top:.5rem;right:1rem;font-weight:800}
.mech-card h3{font-size:1rem;margin-bottom:.5rem;color:#fff}
.mech-card p{font-size:.88rem;color:rgba(255,255,255,.65);line-height:1.6}

/* === INGREDIENTS === */
.ing-grid{display:grid;grid-template-columns:1fr;gap:1rem}
.ing-card{background:white;border-radius:var(--radius);padding:1.4rem;border:1px solid rgba(30,27,75,.06);transition:var(--transition)}
.ing-card:hover{box-shadow:0 12px 36px rgba(59,130,246,.1);border-color:rgba(59,130,246,.15)}
.ing-card h3{font-size:.95rem;color:var(--indigo);margin-bottom:.25rem}
.ing-card .role{font-size:.72rem;font-weight:700;background:var(--grad-glow);-webkit-background-clip:text;-webkit-text-fill-color:transparent;text-transform:uppercase;letter-spacing:.06em;margin-bottom:.45rem;display:inline-block}
.ing-card p{font-size:.88rem;line-height:1.6}
.ing-card .ref{font-size:.73rem;color:var(--electric);margin-top:.4rem;display:block}
.ing-card .ref a{color:var(--electric);text-decoration:underline}

/* === BENEFITS === */
.benefits-grid{display:grid;grid-template-columns:1fr;gap:1rem}
.ben-card{text-align:center;padding:1.5rem 1.2rem;border-radius:var(--radius);background:white;border:1px solid rgba(30,27,75,.05);transition:var(--transition)}
.ben-card:hover{transform:translateY(-4px);box-shadow:0 16px 40px rgba(59,130,246,.1)}
.ben-icon{width:54px;height:54px;border-radius:16px;background:var(--off);display:flex;align-items:center;justify-content:center;margin:0 auto .8rem;font-size:1.4rem}
.ben-card h3{font-size:.95rem;margin-bottom:.4rem}
.ben-card p{font-size:.85rem;line-height:1.6}

/* === REVIEWS === */
.reviews-grid{display:grid;grid-template-columns:1fr;gap:1.2rem}
.review-card{background:white;border-radius:var(--radius);padding:1.5rem;border:1px solid rgba(30,27,75,.05);position:relative}
.review-card::before{content:'"';position:absolute;top:12px;right:20px;font-size:4rem;color:rgba(59,130,246,.08);font-family:serif;line-height:1}
.review-card img{width:56px;height:56px;border-radius:50%;margin-bottom:.8rem;object-fit:cover;border:3px solid var(--off)}
.review-card .stars{color:var(--gold);font-size:.95rem;margin-bottom:.5rem}
.review-card p{font-size:.9rem;line-height:1.65;font-style:italic;margin-bottom:.7rem;color:var(--slate)}
.review-card .name{font-weight:700;font-size:.84rem;color:var(--indigo)}
.review-card .loc{font-size:.75rem;color:var(--light)}

/* === PRICING === */
.pricing-grid{display:grid;grid-template-columns:1fr;gap:1.5rem;align-items:start}
.price-card{background:white;border-radius:22px;padding:1.5rem;text-align:center;border:2px solid rgba(30,27,75,.06);transition:var(--transition);position:relative}
.price-card.popular{border-color:var(--electric);box-shadow:0 20px 60px rgba(59,130,246,.15)}
.price-card.popular::before{content:'🏆 BEST VALUE';position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:var(--grad);color:white;padding:.3rem 1.2rem;border-radius:var(--radius-full);font-size:.68rem;font-weight:700;letter-spacing:.1em;white-space:nowrap}
.price-card h3{font-size:1.05rem;margin-bottom:.3rem}
.price-card .bottles{font-size:.82rem;color:var(--light);margin-bottom:.8rem}
.price-card .price{font-family:'Sora',sans-serif;font-size:2.4rem;color:var(--indigo);font-weight:800}
.price-card .price span{font-size:.9rem;color:var(--light);font-weight:400}
.price-card .per{font-size:.78rem;color:var(--body);margin-bottom:.8rem}
.price-card ul{list-style:none;text-align:left;margin-bottom:1.2rem}
.price-card ul li{font-size:.8rem;padding:.25rem 0;color:var(--body)}
.price-card ul li::before{content:'✓';color:var(--mint);font-weight:700;margin-right:.4rem}
.price-card img{max-height:150px;margin:0 auto .8rem}
.guarantee-badge{text-align:center;margin-top:2rem}
.guarantee-badge img{max-width:150px;margin:0 auto}

/* === FAQ === */
.faq-item{background:white;border-radius:var(--radius-sm);margin-bottom:.6rem;overflow:hidden;border:1px solid rgba(30,27,75,.05)}
.faq-q{padding:1rem 1.2rem;font-weight:600;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-size:.9rem;color:var(--slate);transition:background .3s;min-height:48px;gap:.5rem}
.faq-q:hover{background:var(--off)}
.faq-q::after{content:'+';font-size:1.3rem;color:var(--electric);transition:transform .3s;flex-shrink:0;font-weight:700}
.faq-item.open .faq-q::after{content:'−'}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease,padding .3s}
.faq-item.open .faq-a{max-height:600px;padding:0 1.2rem 1rem}
.faq-a p{font-size:.88rem;line-height:1.7;color:var(--body)}

/* === SCIENCE LINKS === */
.science-links{display:grid;grid-template-columns:1fr;gap:.6rem}
.sci-link{display:flex;align-items:start;gap:.5rem;padding:.7rem .9rem;background:white;border-radius:var(--radius-sm);border:1px solid rgba(30,27,75,.05);font-size:.8rem;transition:border-color .3s}
.sci-link:hover{border-color:var(--electric)}
.sci-link .num{font-weight:700;color:var(--electric);min-width:22px}
.sci-link a{color:var(--indigo);line-height:1.4}
.sci-link a:hover{color:var(--electric)}

/* === BLOG === */
.blog-grid{display:grid;grid-template-columns:1fr;gap:1.2rem}
.blog-card{background:white;border-radius:var(--radius);overflow:hidden;border:1px solid rgba(30,27,75,.06);transition:var(--transition)}
.blog-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.blog-card .thumb{height:150px;background:var(--grad-dark);display:flex;align-items:center;justify-content:center;font-size:2.5rem;position:relative;overflow:hidden}
.blog-card .thumb::after{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(59,130,246,.2),rgba(6,182,212,.15))}
.blog-card .blog-body{padding:1.2rem}
.blog-card .blog-cat{font-size:.68rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;background:var(--grad-glow);-webkit-background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:.3rem;display:inline-block}
.blog-card h3{font-size:.95rem;margin-bottom:.4rem;line-height:1.35}
.blog-card h3 a{color:var(--slate)}
.blog-card h3 a:hover{color:var(--electric)}
.blog-card .excerpt{font-size:.83rem;color:var(--body);line-height:1.6;margin-bottom:.8rem}
.blog-card .read-more{font-size:.8rem;font-weight:600;color:var(--electric)}

/* === ARTICLE / PAGE === */
.article-hero{padding:7rem 1.5rem 2rem;background:var(--grad-dark)}
.article-hero .breadcrumb{font-size:.78rem;color:rgba(255,255,255,.5);margin-bottom:.8rem}
.article-hero .breadcrumb a{color:var(--neon)}
.article-hero h1{font-size:clamp(1.5rem,4vw,2.4rem);max-width:800px;color:#fff}
.article-hero .meta{font-size:.83rem;color:rgba(255,255,255,.5);margin-top:.6rem}
.article-content{max-width:800px;margin:0 auto;padding:2.5rem 1.5rem}
.article-content h2{font-size:clamp(1.25rem,3vw,1.6rem);margin:2rem 0 .8rem;color:var(--indigo)}
.article-content h3{font-size:clamp(1.05rem,2.5vw,1.2rem);margin:1.5rem 0 .6rem}
.article-content p{margin-bottom:1rem;font-size:1rem;line-height:1.8}
.article-content ul,.article-content ol{margin:1rem 0 1rem 1.5rem}
.article-content li{margin-bottom:.5rem;font-size:.95rem;line-height:1.7}
.article-content a{color:var(--electric);text-decoration:underline}
.article-content blockquote{border-left:4px solid var(--electric);padding:1rem 1.5rem;background:var(--off);margin:1.5rem 0;border-radius:0 var(--radius-sm) var(--radius-sm) 0;font-style:italic}
.article-cta{background:var(--off);border:2px solid rgba(59,130,246,.1);border-radius:var(--radius);padding:1.5rem;text-align:center;margin:2rem 0}
.article-cta h3{margin-bottom:.4rem}
.article-cta p{margin-bottom:.8rem;font-size:.95rem}

/* === CTA BANNER === */
.cta-banner{background:var(--grad-dark);padding:3.5rem 1.5rem;text-align:center;position:relative;overflow:hidden}
.cta-banner::before{content:'';position:absolute;top:-50%;right:-20%;width:500px;height:500px;background:radial-gradient(circle,rgba(59,130,246,.1),transparent);border-radius:50%}
.cta-banner h2{color:white;font-size:clamp(1.4rem,4vw,2rem);margin-bottom:.8rem}
.cta-banner p{color:rgba(255,255,255,.8);max-width:620px;margin:0 auto 1.5rem;font-size:1.05rem}
.cta-banner .link-self{color:var(--neon)}

/* === LEGAL === */
.legal-page{padding:7rem 1.5rem 3rem}
.legal-page .container{max-width:800px}
.legal-page h1{font-size:clamp(1.5rem,4vw,2rem);margin-bottom:1.5rem}
.legal-page h2{font-size:1.15rem;margin:1.8rem 0 .6rem;color:var(--indigo-mid)}
.legal-page p{margin-bottom:.9rem;font-size:.95rem;line-height:1.8}
.legal-page ul{margin:1rem 0 1rem 1.5rem}
.legal-page li{margin-bottom:.4rem;font-size:.92rem}

/* === FOOTER === */
footer{background:var(--indigo);color:rgba(255,255,255,.65);padding:2.5rem 1.5rem 1.5rem}
.footer-top{display:flex;flex-direction:column;gap:1.5rem;margin-bottom:1.5rem;padding-bottom:1.5rem;border-bottom:1px solid rgba(255,255,255,.08)}
.footer-col h4{color:#fff;font-size:.88rem;margin-bottom:.5rem;font-family:'Sora',sans-serif}
.footer-col a{display:flex;align-items:center;font-size:.8rem;margin-bottom:.35rem;color:rgba(255,255,255,.55);min-height:30px}
.footer-col a:hover{color:var(--neon)}
.footer-disclaimer{font-size:.7rem;line-height:1.7;color:rgba(255,255,255,.35);max-width:900px}

/* === SCROLL REVEAL === */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s cubic-bezier(.4,0,.2,1),transform .7s cubic-bezier(.4,0,.2,1)}
.reveal.visible{opacity:1;transform:translateY(0)}

/* === RESPONSIVE — MOBILE FIRST === */
@media(min-width:480px){
  .hero-img img{max-height:380px}
}
@media(min-width:576px){
  .mechanism-grid,.ing-grid,.benefits-grid,.reviews-grid,.science-links,.blog-grid{grid-template-columns:repeat(2,1fr)}
  .footer-top{flex-direction:row;flex-wrap:wrap}
  .footer-col{min-width:140px}
}
@media(min-width:768px){
  .hero-inner{grid-template-columns:1fr 1fr;gap:3rem}
  .hero-img{order:0}
  .about-grid{grid-template-columns:1fr 1.2fr}
  .pricing-grid{grid-template-columns:repeat(3,1fr)}
  .price-card.popular{transform:scale(1.06)}
  section{padding:5rem 1.5rem}
  .nav-links{display:flex}
  .mobile-toggle{display:none}
}
@media(min-width:1024px){
  .mechanism-grid,.benefits-grid,.reviews-grid,.blog-grid{grid-template-columns:repeat(3,1fr)}
  .hero-img img{max-height:440px}
  .hero{min-height:auto;padding:8rem 1.5rem 5rem}
}
@media(max-width:767px){
  .nav-links{display:none;position:absolute;top:100%;left:0;width:100%;background:rgba(30,27,75,.98);backdrop-filter:blur(20px);flex-direction:column;padding:1rem;box-shadow:0 10px 40px rgba(0,0,0,.3);gap:.4rem}
  .nav-links.active{display:flex}
  .nav-links a{min-height:44px;display:flex;align-items:center;padding:.4rem 0}
  .mobile-toggle{display:flex;align-items:center;justify-content:center}
  .hero-img{order:-1}
  .trust-inner{gap:.8rem}
  .trust-item span{font-size:.7rem}
  .hero{min-height:auto;padding:6rem 1rem 2.5rem}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition-duration:.01ms!important}
}
input,select,textarea{font-size:16px}