/* ===================================================================
   PULMO BALANCE — custom design system
   Palette: sky #4a90c2 | mint #5fb89c | cloud #f5f9fb
            deep sky #2d6a94 | slate #5c6b73 | line #e1eaee
   Display: 'Lexend' (designed for reading ease — fitting for "breathing ease")
   Body:    'Karla' (clean sans)
   Signature: breath wave (inhale/exhale rhythm)
   NOTE: all grids minmax(0,1fr); flex items min-width:0;
         images capped with min(NNNpx,100%); hero mobile order H1->img->rest.
=================================================================== */

:root{
  --sky:#4a90c2;
  --sky-dark:#2d6a94;
  --mint:#5fb89c;
  --mint-dark:#439a80;
  --cloud:#f5f9fb;
  --tint:#e8f2f5;
  --slate:#5c6b73;
  --line:#e1eaee;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  font-family:'Karla',sans-serif;
  color:#1e2d36;
  background:var(--cloud);
  margin:0;
  font-size:17px;
  line-height:1.7;
}
h1,h2,h3,h4,.pb-display{
  font-family:'Lexend',sans-serif;
  font-weight:600;
  line-height:1.28;
  color:#1e2d36;
}
.pb-eyebrow{
  font-family:'Karla',sans-serif;
  text-transform:uppercase;
  letter-spacing:2.5px;
  font-weight:700;
  font-size:.78rem;
  color:var(--mint-dark);
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;height:auto;display:block;}
.container{max-width:1160px;margin:0 auto;padding:0 24px;}

/* ---------- Buttons ---------- */
.btn-pb{
  display:inline-flex;align-items:center;gap:10px;
  background:var(--mint);
  color:#fff;
  font-weight:700;
  font-size:1.02rem;
  padding:15px 32px;
  border-radius:10px;
  border:none;
  cursor:pointer;
  transition:transform .15s ease, background .15s ease, box-shadow .15s ease;
  box-shadow:0 10px 24px rgba(95,184,156,.32);
}
.btn-pb:hover{background:var(--mint-dark);transform:translateY(-2px);color:#fff;}
.btn-pb-outline{
  display:inline-flex;align-items:center;gap:10px;
  background:transparent;
  border:2px solid rgba(255,255,255,.5);
  color:#fff;
  font-weight:700;font-size:.98rem;
  padding:13px 28px;border-radius:10px;transition:all .15s ease;
}
.btn-pb-outline:hover{background:#fff;color:var(--sky-dark);border-color:#fff;}

/* ---------- Navbar ---------- */
.pb-nav{
  position:sticky;top:0;z-index:1000;
  background:var(--cloud);
  padding:16px 0;
  border-bottom:1px solid var(--line);
}
.pb-nav .container{display:flex;align-items:center;justify-content:space-between;}
.pb-logo{
  font-family:'Lexend',sans-serif;
  font-weight:600;
  color:#1e2d36;
  font-size:1.4rem;
}
.pb-logo span{color:var(--mint-dark);}
.pb-nav-links{display:flex;gap:30px;list-style:none;margin:0;padding:0;align-items:center;}
.pb-nav-links a{color:#1e2d36;font-weight:600;font-size:.95rem;opacity:.82;}
.pb-nav-links a:hover{opacity:1;color:var(--mint-dark);}
.pb-nav-toggle{display:none;background:none;border:none;color:#1e2d36;font-size:1.8rem;cursor:pointer;}

@media(max-width:900px){
  .pb-nav-links{
    position:absolute;top:100%;left:0;right:0;background:var(--cloud);
    flex-direction:column;gap:0;border-top:1px solid var(--line);
    display:none;
  }
  .pb-nav-links.open{display:flex;}
  .pb-nav-links li{width:100%;border-bottom:1px solid var(--line);}
  .pb-nav-links a{display:block;padding:16px 24px;}
  .pb-nav-cta{display:none;}
  .pb-nav-toggle{display:block;}
}

/* ---------- Hero ---------- */
.pb-hero{
  background:radial-gradient(ellipse at 85% 0%, #3c7fac 0%, var(--sky-dark) 55%, #1f4d69 100%);
  color:#fff;
  padding:64px 0 0;
  position:relative;
  overflow:hidden;
}
.pb-hero-row{display:flex;align-items:center;gap:48px;flex-wrap:wrap;position:relative;z-index:2;}
.pb-hero-copy{flex:1 1 440px;min-width:0;}
.pb-hero-top,.pb-hero-bottom{width:100%;}
.pb-hero-copy h1{font-size:2.6rem;color:#fff;margin:16px 0 20px;}
.pb-hero-copy h1 em{font-style:normal;color:var(--mint);}
.pb-hero-copy p{color:#d3e3ec;font-size:1.08rem;max-width:520px;}
.pb-hero-img{flex:1 1 240px;min-width:0;text-align:center;}
.pb-hero-img img{max-width:min(280px,100%);margin:0 auto;filter:drop-shadow(0 24px 32px rgba(0,0,0,.3));}
.pb-hero-btns{display:flex;gap:16px;flex-wrap:wrap;margin-top:28px;}
.pb-rating-inline{display:flex;align-items:center;gap:12px;margin-top:28px;color:#d3e3ec;font-weight:600;}
.pb-rating-inline .stars{color:var(--mint);letter-spacing:2px;font-size:1.2rem;}

/* Mobile hero reorder: eyebrow+H1, then image, then paragraph/buttons/rating */
@media(max-width:900px){
  .pb-hero-copy{display:contents;}
  .pb-hero-top{order:1;}
  .pb-hero-img{order:2;}
  .pb-hero-bottom{order:3;}
}

/* breath wave signature */
.pb-breath-wrap{margin-top:44px;padding-bottom:36px;position:relative;z-index:2;}
.pb-breath-wrap svg{width:100%;height:60px;display:block;}
.pb-breath-line{fill:none;stroke:var(--mint);stroke-width:2.5;}
.pb-breath-labels{display:flex;justify-content:space-between;color:#a9c3d1;font-size:.78rem;font-weight:700;margin-top:4px;}

/* ---------- Section shells ---------- */
.pb-section{padding:78px 0;}
.pb-section-tint{background:var(--tint);}
.pb-section-dark{background:#1f4d69;color:#d3e3ec;}
.pb-section-dark h2,.pb-section-dark h3{color:#fff;}
.pb-head{text-align:center;max-width:700px;margin:0 auto 46px;}
.pb-head h2{font-size:2.1rem;margin-top:10px;}

/* ---------- Trust badges ---------- */
.pb-badges{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;}
@media(max-width:800px){.pb-badges{grid-template-columns:repeat(2,minmax(0,1fr));}}
.pb-badge-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:24px 18px;text-align:center;}
.pb-badge-card img{max-width:min(150px,100%);margin:0 auto 14px;}
.pb-badge-card p{font-weight:700;color:#1e2d36;margin:0;font-size:1rem;}

/* ---------- Testimonials ---------- */
.pb-testi-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
@media(max-width:900px){.pb-testi-grid{grid-template-columns:1fr;}}
.pb-testi-card{background:#fff;border-radius:12px;padding:28px 24px;border:1px solid var(--line);}
.pb-testi-top{display:flex;align-items:center;gap:14px;margin-bottom:12px;}
.pb-testi-top img{width:54px;height:54px;border-radius:50%;object-fit:cover;}
.pb-testi-name{font-weight:700;color:#1e2d36;}
.pb-testi-loc{color:var(--slate);font-size:.85rem;}
.pb-stars{color:var(--mint-dark);letter-spacing:2px;margin-bottom:8px;}
.pb-testi-card p{color:var(--slate);font-size:.94rem;margin:0;}

.pb-rating-strip{text-align:center;}
.pb-rating-strip img{max-width:min(320px,100%);margin:0 auto;}

/* ---------- About / How it works ---------- */
.pb-row{display:flex;align-items:center;gap:52px;flex-wrap:wrap;}
.pb-row.reverse{flex-direction:row-reverse;}
.pb-row-img{flex:1 1 220px;min-width:0;text-align:center;}
.pb-row-img img{max-width:min(240px,100%);margin:0 auto;}
.pb-row-copy{flex:1 1 440px;min-width:0;}
.pb-row-copy h2{font-size:2rem;margin-bottom:16px;}
.pb-row-copy p{color:var(--slate);}
.pb-section-dark .pb-row-copy p{color:#bcd2dd;}

/* ---------- How to use steps ---------- */
.pb-steps{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;max-width:820px;margin:0 auto;}
@media(max-width:700px){.pb-steps{grid-template-columns:1fr;}}
.pb-step-card{background:#fff;border-radius:12px;padding:26px 24px;border:1px solid var(--line);}
.pb-step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:50%;background:var(--sky);color:#fff;
  font-family:'Lexend',sans-serif;font-weight:600;margin-bottom:14px;
}
.pb-step-card h4{font-size:1.1rem;margin:0 0 8px;}
.pb-step-card p{margin:0;color:var(--slate);font-size:.94rem;}

/* ---------- Three-pathway ingredient grouping ---------- */
.pb-path-block{margin-bottom:36px;}
.pb-path-label{
  display:inline-flex;align-items:center;gap:10px;
  background:var(--sky);color:#fff;font-weight:700;
  padding:8px 18px;border-radius:30px;font-size:.85rem;
  margin-bottom:18px;
}
.pb-path-label.p2{background:var(--mint-dark);}
.pb-path-label.p3{background:var(--slate);}
.pb-ing-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;}
@media(max-width:700px){.pb-ing-grid{grid-template-columns:1fr;}}
.pb-ing-card{background:#fff;border-radius:12px;padding:20px 20px;border:1px solid var(--line);}
.pb-ing-card h4{font-size:1.02rem;margin:0 0 6px;font-family:'Lexend',sans-serif;}
.pb-ing-card p{margin:0;color:var(--slate);font-size:.9rem;}

/* ---------- Benefits ---------- */
.pb-benefit-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
@media(max-width:900px){.pb-benefit-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media(max-width:620px){.pb-benefit-grid{grid-template-columns:1fr;}}
.pb-benefit-card{background:#fff;border-radius:12px;padding:26px 22px;border:1px solid var(--line);}
.pb-benefit-card .mark{color:var(--mint-dark);font-weight:700;font-size:1.2rem;margin-right:6px;}
.pb-benefit-card h4{font-size:1.05rem;margin:8px 0 8px;}
.pb-benefit-card p{margin:0;color:var(--slate);font-size:.94rem;}

/* ---------- Pricing ---------- */
.pb-pricing-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px;align-items:stretch;}
@media(max-width:900px){.pb-pricing-grid{grid-template-columns:1fr;max-width:420px;margin:0 auto;}}
.pb-price-card{
  background:#fff;border-radius:14px;
  padding:30px 24px;text-align:center;position:relative;display:flex;flex-direction:column;
  border:2px solid var(--line);
}
.pb-price-card.featured{
  border-color:var(--mint);
  box-shadow:0 22px 40px rgba(95,184,156,.2);
  transform:translateY(-8px);
}
@media(max-width:900px){.pb-price-card.featured{transform:none;}}
.pb-ribbon{
  position:absolute;top:-14px;left:50%;transform:translateX(-50%);
  background:var(--mint);color:#fff;font-weight:700;
  font-size:.76rem;letter-spacing:.5px;text-transform:uppercase;
  padding:6px 16px;border-radius:20px;white-space:nowrap;
}
.pb-ribbon.value{background:var(--sky-dark);}
.pb-price-card img.bottle{max-width:min(160px,100%);margin:6px auto 14px;}
.pb-pack-title{font-family:'Lexend',sans-serif;font-weight:600;font-size:1.4rem;}
.pb-pack-sub{color:var(--slate);font-size:.9rem;margin-bottom:14px;}
.pb-perbottle{font-family:'Lexend',sans-serif;font-weight:600;font-size:2.4rem;color:#1e2d36;line-height:1;}
.pb-perbottle span{font-family:'Karla',sans-serif;font-size:.9rem;font-weight:400;color:var(--slate);}
.pb-total{font-weight:700;margin:10px 0 2px;}
.pb-ship{font-size:.86rem;font-weight:700;margin-bottom:18px;color:var(--mint-dark);}
.pb-ship.paid{color:var(--slate);}
.pb-price-card .btn-pb{width:100%;justify-content:center;margin-top:auto;}
.pb-cards-img{max-width:min(190px,100%);margin:14px auto 0;opacity:.85;}

/* ---------- Stock warning ---------- */
.pb-warning{
  background:#eaf4f1;border:2px dashed var(--mint-dark);border-radius:12px;
  padding:18px 24px;text-align:center;color:var(--mint-dark);font-weight:700;
  font-size:1rem;
}

/* ---------- Guarantee ---------- */
.pb-guarantee{display:flex;align-items:center;gap:44px;flex-wrap:wrap;background:#fff;border-radius:14px;padding:40px;border:1px solid var(--line);}
.pb-guarantee img{max-width:min(180px,100%);margin:0 auto;}
.pb-guarantee-copy{flex:1 1 360px;min-width:0;}
.pb-guarantee-copy h3{font-size:1.8rem;margin-bottom:14px;}
.pb-guarantee-copy p{color:var(--slate);}

/* ---------- Final CTA ---------- */
.pb-final-cta{
  background:linear-gradient(135deg,#1f4d69 0%,var(--sky-dark) 100%);
  color:#fff;text-align:center;border-radius:18px;padding:56px 30px;
}
.pb-final-cta h2{color:#fff;font-size:2.2rem;}
.pb-final-cta img{max-width:min(220px,100%);margin:24px auto;}
.pb-final-cta .old-price{text-decoration:line-through;opacity:.75;font-size:1.1rem;}
.pb-final-cta .new-price{font-family:'Lexend',sans-serif;font-weight:600;color:var(--mint);font-size:2.3rem;margin:6px 0 22px;}

/* ---------- FAQ ---------- */
.pb-faq-item{border-bottom:1px solid var(--line);}
.pb-faq-q{
  width:100%;text-align:left;background:none;border:none;padding:20px 4px;
  display:flex;justify-content:space-between;align-items:center;cursor:pointer;
  font-weight:700;font-size:1.08rem;color:#1e2d36;font-family:'Lexend',sans-serif;gap:16px;
}
.pb-faq-q::after{content:'+';font-size:1.5rem;color:var(--mint-dark);transition:transform .2s;flex-shrink:0;}
.pb-faq-item.open .pb-faq-q::after{transform:rotate(45deg);}
.pb-faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease;}
.pb-faq-a p{padding:0 4px 20px;margin:0;color:var(--slate);}

/* ---------- Footer ---------- */
.pb-footer{background:#1f4d69;color:#a9c3d1;padding:44px 0 30px;font-size:.9rem;}
.pb-footer a{color:#d3e3ec;}
.pb-footer a:hover{color:var(--mint);}
.pb-footer hr{border-color:rgba(255,255,255,.12);margin:26px 0;}

/* ---------- Sticky mobile order bar ---------- */
.pb-sticky-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:1030;
  background:#1f4d69;padding:10px 16px;display:none;
  align-items:center;justify-content:space-between;gap:12px;
  box-shadow:0 -6px 20px rgba(0,0,0,.3);border-top:2px solid var(--mint);
}
.pb-sticky-bar .price{color:#fff;line-height:1.2;}
.pb-sticky-bar .price b{color:var(--mint);font-size:1.1rem;font-family:'Lexend',sans-serif;}
.pb-sticky-bar .price small{display:block;color:#a9c3d1;font-size:.72rem;}
@media(max-width:900px){.pb-sticky-bar{display:flex;}body{padding-bottom:70px;}}

.align-center{text-align:center;}