/* ===========================================================
   DentaBiome Insider — shared stylesheet
   Palette: intro/primary #2B67B3, deep bottle #19466D,
   gold CTA #F2B705, clean white strips #FFFFFF,
   supporting mint #EAF3F8, ink #16324A
   =========================================================== */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,500;9..144,600;9..144,700&family=Inter:wght@400;500;600;700&display=swap');

:root{
  --primary:#2B67B3;
  --primary-dark:#19466D;
  --ink:#16324A;
  --gold:#F2B705;
  --gold-dark:#D89A00;
  --white:#FFFFFF;
  --mint:#EAF3F8;
  --mint-2:#DCEDF4;
  --line:#D5E3ED;
  --grey:#5B7186;
  --success:#2E8B57;
  --radius:14px;
  --shadow: 0 10px 30px rgba(22,50,74,.10);
  --shadow-lg: 0 20px 50px rgba(22,50,74,.18);
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:'Inter',system-ui,sans-serif;
  color:var(--ink);
  background:var(--white);
  font-size:18px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{
  font-family:'Fraunces',Georgia,serif;
  color:var(--primary-dark);
  line-height:1.2;
  margin:0 0 .5em;
}
h1{font-size:clamp(2.4rem,5vw,3.6rem);font-weight:700;}
h2{font-size:clamp(1.7rem,3.4vw,2.4rem);font-weight:600;}
h3{font-size:1.3rem;font-weight:600;}
p{margin:0 0 1em;}
a{color:var(--primary);}
img{max-width:100%;display:block;}
.container{max-width:1140px;margin:0 auto;padding:0 24px;}
.section{padding:72px 0;}
.section-alt{background:var(--mint);}
.eyebrow{
  display:inline-block;
  font-family:'Inter';
  font-weight:700;
  letter-spacing:.14em;
  text-transform:uppercase;
  font-size:.78rem;
  color:var(--primary);
  background:rgba(43,103,179,.09);
  padding:6px 14px;
  border-radius:999px;
  margin-bottom:16px;
}
.center{text-align:center;}
.lede{color:var(--grey);font-size:1.15rem;max-width:760px;}
.lede.center{margin-left:auto;margin-right:auto;}

/* ---------- Disclosure bar ---------- */
.disclosure-bar{
  background:var(--ink);
  color:#cfe0ee;
  font-size:.85rem;
  text-align:center;
  padding:8px 16px;
}
.disclosure-bar a{color:#fff;text-decoration:underline;}

/* ---------- Header ---------- */
header.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 24px;max-width:1140px;margin:0 auto;
}
.logo{
  font-family:'Fraunces',serif;font-weight:700;font-size:1.5rem;
  color:var(--primary-dark);text-decoration:none;letter-spacing:-.5px;
}
.logo span{color:var(--primary);}
nav.main-nav{display:flex;gap:30px;align-items:center;}
nav.main-nav a{
  color:var(--ink);text-decoration:none;font-weight:600;font-size:.95rem;
}
nav.main-nav a:hover{color:var(--primary);}
.btn-header-cta{
  background:var(--gold);color:var(--ink);
  padding:12px 26px;border-radius:999px;font-weight:700;
  text-decoration:none;box-shadow:0 6px 16px rgba(242,183,5,.4);
  transition:transform .18s ease, box-shadow .18s ease;
  white-space:nowrap;
}
.btn-header-cta:hover{transform:translateY(-2px);box-shadow:0 10px 22px rgba(242,183,5,.55);}
.nav-toggle{display:none;}

/* ---------- Buttons (catchy) ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:17px 38px;border-radius:999px;font-weight:700;font-size:1.08rem;
  text-decoration:none;cursor:pointer;border:none;
  transition:transform .18s ease, box-shadow .18s ease, background .18s ease;
}
.btn-primary{
  background:linear-gradient(135deg,var(--gold),var(--gold-dark));
  color:var(--ink);box-shadow:0 10px 24px rgba(242,183,5,.45);
}
.btn-primary:hover{transform:translateY(-3px) scale(1.02);box-shadow:0 16px 32px rgba(242,183,5,.55);}
.btn-primary:active{transform:translateY(0);}
.btn-outline{
  background:transparent;border:2px solid var(--primary);color:var(--primary-dark);
}
.btn-outline:hover{background:var(--primary);color:#fff;}
.btn-large{padding:22px 48px;font-size:1.25rem;}
.btn-block{width:100%;justify-content:center;}

/* pulse effect for primary CTAs */
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(242,183,5,.5);}
  70%{box-shadow:0 0 0 16px rgba(242,183,5,0);}
  100%{box-shadow:0 0 0 0 rgba(242,183,5,0);}
}
.btn-pulse{animation:pulse 2.4s infinite;}

/* ---------- Hero / Intro ---------- */
.hero{
  background:linear-gradient(160deg,var(--mint) 0%, var(--white) 60%);
  padding:64px 0 40px;position:relative;overflow:hidden;
}
.hero::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;
  background:radial-gradient(circle,rgba(43,103,179,.14),transparent 70%);
  border-radius:50%;
}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center;}
.hero h1{color:var(--primary-dark);}
.hero h2.subtitle{
  font-family:'Inter';font-weight:600;font-size:1.25rem;color:var(--primary);
  margin-top:-6px;margin-bottom:22px;
}
.hero-stars{color:var(--gold-dark);font-weight:700;margin-bottom:14px;}
.hero-img-wrap{
  position:relative;
  animation:float 5s ease-in-out infinite;
}
@keyframes float{
  0%,100%{transform:translateY(0);}
  50%{transform:translateY(-14px);}
}
.hero-img-wrap img{
  border-radius:var(--radius);box-shadow:var(--shadow-lg);
}

/* ---------- Overview strip ---------- */
.overview-strip{
  background:var(--white);border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:34px 0;
}
.overview-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center;
}
.overview-grid .stat b{
  display:block;font-family:'Fraunces';font-size:1.6rem;color:var(--primary-dark);
}
.overview-grid .stat span{color:var(--grey);font-size:.92rem;}

/* ---------- Cards / grids ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:28px;}
.card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:30px;box-shadow:var(--shadow);transition:transform .2s ease, box-shadow .2s ease;
}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);}
.card img{border-radius:10px;margin-bottom:16px;}

/* ---------- Tables ---------- */
.table-wrap{overflow-x:auto;border-radius:var(--radius);box-shadow:var(--shadow);}
table.dtb-table{
  width:100%;border-collapse:collapse;background:#fff;font-size:.98rem;
}
table.dtb-table th{
  background:var(--primary-dark);color:#fff;text-align:left;padding:16px 18px;
  font-family:'Fraunces';font-weight:600;font-size:1rem;
}
table.dtb-table td{
  padding:15px 18px;border-bottom:1px solid var(--line);vertical-align:top;
}
table.dtb-table tr:last-child td{border-bottom:none;}
table.dtb-table tr:nth-child(even) td{background:var(--mint);}
table.dtb-table td.yes{color:var(--success);font-weight:700;}
table.dtb-table td.no{color:#c0392b;font-weight:700;}

/* ---------- Pricing section ---------- */
.pricing-img-link{display:block;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-lg);transition:transform .2s ease;}
.pricing-img-link:hover{transform:scale(1.015);}
.guarantee-badge{
  display:flex;gap:20px;align-items:center;background:var(--mint);
  border:1px dashed var(--primary);border-radius:var(--radius);padding:26px;margin-top:30px;
}
.guarantee-badge img{width:76px;height:76px;flex-shrink:0;}

/* ---------- Ingredients ---------- */
.ingredient-hero-img{border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:36px;}
table.dtb-table td img{width:56px;height:56px;object-fit:cover;border-radius:8px;}

/* ---------- Reviews ---------- */
.review-summary-box{
  background:var(--primary-dark);color:#eaf3f8;border-radius:var(--radius);
  padding:44px;display:grid;grid-template-columns:auto 1fr;gap:40px;align-items:center;
}
.review-summary-box .score{text-align:center;}
.review-summary-box .score b{font-family:'Fraunces';font-size:3.6rem;color:var(--gold);display:block;}
.review-summary-box .stars{color:var(--gold);font-size:1.3rem;letter-spacing:2px;}
.review-photos{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:36px;}
.review-photos img{border-radius:var(--radius);box-shadow:var(--shadow);}

/* ---------- Bonuses ---------- */
.bonus-card{
  display:grid;grid-template-columns:200px 1fr;gap:26px;align-items:center;
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px;box-shadow:var(--shadow);margin-bottom:24px;
}
.bonus-card img{border-radius:10px;}
.bonus-tag{
  display:inline-block;background:var(--gold);color:var(--ink);font-weight:700;
  padding:4px 12px;border-radius:999px;font-size:.8rem;margin-bottom:10px;
}
.price-strike{color:#c0392b;text-decoration:line-through;margin-right:8px;}
.price-free{color:var(--success);font-weight:700;}

/* ---------- FAQ ---------- */
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;text-align:left;background:none;border:none;cursor:pointer;
  padding:22px 0;font-family:'Fraunces';font-weight:600;font-size:1.1rem;color:var(--primary-dark);
  display:flex;justify-content:space-between;align-items:center;gap:20px;
}
.faq-q .plus{transition:transform .25s ease;font-size:1.4rem;color:var(--primary);flex-shrink:0;}
.faq-item.open .faq-q .plus{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;color:var(--grey);}
.faq-item.open .faq-a{max-height:400px;}
.faq-a p{padding-bottom:20px;}

/* ---------- Care/advice section ---------- */
.advice-box{
  background:#FFF8E6;border-left:5px solid var(--gold-dark);border-radius:10px;
  padding:30px 34px;
}
.advice-box li{margin-bottom:10px;}

/* ---------- Final pricing (last section) ---------- */
.final-cta{
  background:linear-gradient(135deg,var(--primary-dark),var(--primary));
  color:#fff;border-radius:24px;padding:56px;
  display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;
}
.final-cta h2{color:#fff;}
.final-cta .price-row{font-family:'Fraunces';font-size:2.2rem;margin:18px 0;}
.final-cta .price-row .old{text-decoration:line-through;opacity:.6;font-size:1.4rem;margin-right:14px;}
.final-cta .price-row .new{color:var(--gold);}
.final-cta img{border-radius:16px;box-shadow:var(--shadow-lg);}

/* ---------- Back to top ---------- */
#backToTop{
  position:fixed;bottom:28px;right:28px;width:52px;height:52px;border-radius:50%;
  background:var(--primary-dark);color:#fff;border:none;cursor:pointer;font-size:1.3rem;
  box-shadow:var(--shadow-lg);opacity:0;visibility:hidden;transition:all .3s ease;z-index:60;
}
#backToTop.show{opacity:1;visibility:visible;}
#backToTop:hover{background:var(--primary);transform:translateY(-3px);}

/* ---------- Footer ---------- */
footer.site-footer{background:var(--ink);color:#b9cede;padding:56px 0 30px;font-size:.92rem;}
footer.site-footer h4{color:#fff;font-family:'Inter';font-size:1rem;margin-bottom:14px;}
footer.site-footer a{color:#b9cede;text-decoration:none;}
footer.site-footer a:hover{color:#fff;text-decoration:underline;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;margin-bottom:36px;}
.footer-links li{margin-bottom:10px;list-style:none;}
.footer-fda{
  border-top:1px solid rgba(255,255,255,.12);padding-top:26px;line-height:1.7;color:#8fa7bd;font-size:.85rem;
}

/* ---------- Education pages ---------- */
.edu-hero{background:var(--mint);padding:56px 0;text-align:center;}
.edu-body{max-width:760px;margin:0 auto;padding:56px 24px;}
.edu-body h2{margin-top:1.4em;}
.edu-body blockquote{
  border-left:4px solid var(--primary);margin:28px 0;padding:6px 24px;
  background:var(--mint);border-radius:0 10px 10px 0;color:var(--grey);
}
.source-list{background:var(--mint);border-radius:var(--radius);padding:24px 30px;font-size:.9rem;color:var(--grey);}
.source-list li{margin-bottom:8px;}
.back-home-wrap{text-align:center;padding:44px 0;}

/* ---------- Utilities ---------- */
.mt-40{margin-top:40px;}
.mb-40{margin-bottom:40px;}
.text-center{text-align:center;}
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease, transform .7s ease;}
.reveal.in{opacity:1;transform:translateY(0);}

/* ---------- Responsive ---------- */
@media (max-width: 900px){
  .hero-grid, .grid-3, .grid-2, .footer-grid{grid-template-columns:1fr;}
  .grid-4{grid-template-columns:repeat(1,1fr);}
  .overview-grid{grid-template-columns:repeat(2,1fr);}
  nav.main-nav{position:fixed;top:70px;left:0;right:0;background:#fff;flex-direction:column;
    padding:20px 24px;border-bottom:1px solid var(--line);display:none;box-shadow:var(--shadow);}
  nav.main-nav.open{display:flex;}
  .nav-toggle{display:block;background:none;border:none;font-size:1.6rem;cursor:pointer;color:var(--primary-dark);}
  .review-summary-box, .final-cta, .bonus-card{grid-template-columns:1fr;text-align:center;}
  .bonus-card img{margin:0 auto;}
  body{font-size:16.5px;}
}