/* ==========================================================
   VitalFlow — main.css
   Palette: navy #0f2b4d · teal #1a7590 · gold #d4a017
   ========================================================== */

/* Buttons (reusable) */
.btn-outline{background:transparent;border:2px solid var(--navy);color:var(--navy);box-shadow:none}
.btn-outline:hover{background:var(--navy);color:#fff}

/* Section titles */
.section-title{font-family:'Playfair Display',serif;font-size:clamp(1.6rem,3.5vw,2.4rem);color:var(--navy);text-align:center;margin-bottom:14px;letter-spacing:-.5px;font-weight:700;line-height:1.2}
.section-title em{font-style:normal;color:var(--teal)}
.section-title-light{font-family:'Playfair Display',serif;font-size:clamp(1.5rem,3vw,2.1rem);color:#fff;text-align:center;margin:30px 0 40px;font-weight:700}
.section-subtitle{text-align:center;color:var(--muted);font-size:1.05rem;max-width:720px;margin:0 auto 44px;line-height:1.7}
.eyebrow{display:inline-block;color:var(--teal);font-size:.85rem;font-weight:700;letter-spacing:1.5px;text-transform:uppercase;margin-bottom:12px}
.unique-badge{display:inline-block;background:linear-gradient(135deg,#d4a017,#b88910);color:var(--navy);padding:6px 18px;border-radius:20px;font-size:.8rem;font-weight:700;letter-spacing:1px;text-transform:uppercase;margin-bottom:16px}

/* Section 4 - Trust Strip */
.trust-strip{background:#fff;border-bottom:1px solid var(--line);padding:26px 0}
.trust-strip-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:20px;align-items:center}
.trust-badge{display:flex;flex-direction:column;align-items:center;gap:6px;text-align:center}
.trust-icon{font-size:1.7rem}
.trust-label{font-size:.82rem;color:var(--muted);font-weight:600;letter-spacing:.3px}

/* Section 5 - Why Choose */
.why-choose{padding:80px 0;background:#fff}
.two-col-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:60px;align-items:center}
.two-col-grid.reverse{grid-template-columns:1.15fr 1fr}
.two-col-grid .col-img img{max-width:500px;margin:0 auto;filter:drop-shadow(0 15px 30px rgba(15,43,77,.15))}
.two-col-grid h2{font-family:'Playfair Display',serif;font-size:clamp(1.6rem,3vw,2.2rem);color:var(--navy);margin-bottom:20px;line-height:1.25;font-weight:700}
.two-col-grid h2 em{font-style:normal;color:var(--teal)}
.two-col-grid .lead{font-size:1.05rem;color:var(--muted);margin-bottom:24px}
.two-col-grid p{color:var(--muted);margin-bottom:16px;line-height:1.75}
.benefit-list{list-style:none;margin-top:24px}
.benefit-list li{display:flex;gap:12px;padding:10px 0;align-items:flex-start;color:var(--ink)}
.benefit-list strong{color:var(--navy)}

/* Section 6 - Problem */
.problem-section{background:linear-gradient(135deg,#0f2b4d 0%,#1a3a63 100%);color:#fff;padding:80px 0}
.problem-section .ai-answer-block{background:rgba(255,255,255,.08);border-left-color:var(--gold);color:#fff}
.problem-section .ai-answer-block h3,.problem-section .ai-answer-block p{color:#fff}
.problem-section .ai-label{background:var(--gold);color:var(--navy)}
.pain-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:30px}
.pain-card{background:rgba(255,255,255,.06);backdrop-filter:blur(8px);padding:32px 24px;border-radius:14px;border:1px solid rgba(255,255,255,.1);transition:transform .2s,background .2s}
.pain-card:hover{transform:translateY(-4px);background:rgba(255,255,255,.1)}
.pain-icon{font-size:2.4rem;margin-bottom:14px;display:block}
.pain-card h3{color:var(--gold);font-size:1.15rem;margin-bottom:10px;font-weight:700}
.pain-card p{color:#c8d3e0;font-size:.95rem;line-height:1.6}

/* AI Answer Block (reusable) */
.ai-answer-block{background:#eaf4fa;border-left:4px solid var(--teal);padding:22px 28px;border-radius:0 12px 12px 0;margin:0 auto 40px;max-width:820px;position:relative}
.ai-label{position:absolute;top:-11px;left:20px;background:var(--teal);color:#fff;padding:3px 12px;border-radius:12px;font-size:.72rem;font-weight:700;letter-spacing:1px;text-transform:uppercase}
.ai-answer-block h3{color:var(--navy);font-size:1.15rem;margin-bottom:10px;font-weight:700}
.ai-answer-block p{color:var(--ink);font-size:.98rem;line-height:1.7;margin:0}

/* Section 7 - What Is */
.what-is{padding:80px 0;background:var(--cream)}

/* Section 8 - How It Works */
.how-it-works{padding:80px 0;background:#fff}
.mechanism-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:20px}
.mechanism-card{background:#fff;border:2px solid var(--line);border-radius:14px;padding:32px 26px;transition:all .25s;position:relative;overflow:hidden}
.mechanism-card:hover{border-color:var(--gold);transform:translateY(-4px);box-shadow:0 12px 28px rgba(15,43,77,.1)}
.mechanism-num{color:var(--gold);font-family:'Playfair Display',serif;font-size:2.4rem;font-weight:800;line-height:1;margin-bottom:14px;opacity:.9}
.mechanism-card h3{color:var(--navy);font-size:1.2rem;margin-bottom:12px;font-weight:700}
.mechanism-card p{color:var(--muted);font-size:.95rem;line-height:1.65}

/* Section 9 - Diagram */
.diagram-section{padding:80px 0;background:linear-gradient(135deg,#f8f5ef 0%,#f4f7fb 100%);text-align:center}
.diagram-wrap{max-width:900px;margin:30px auto 0;background:#fff;padding:30px;border-radius:16px;box-shadow:0 8px 24px rgba(15,43,77,.08)}
.diagram-caption{margin-top:16px;color:var(--muted);font-size:.95rem;font-style:italic;max-width:700px;margin-left:auto;margin-right:auto}

/* Section 10 - Pricing */
.pricing{padding:80px 0;background:#fff}
.pricing-grid{display:grid;grid-template-columns:1fr 1.15fr 1fr;gap:26px;align-items:center;margin-bottom:50px}
.price-card{background:#fff;border:2px solid var(--line);border-radius:16px;padding:34px 28px;text-align:center;position:relative;transition:transform .25s,box-shadow .25s}
.price-card:hover{transform:translateY(-6px);box-shadow:0 14px 34px rgba(15,43,77,.12)}
.price-featured{border-color:var(--gold);transform:scale(1.05);box-shadow:0 14px 34px rgba(212,160,23,.2)}
.price-featured:hover{transform:scale(1.05) translateY(-6px)}
.best-badge{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:linear-gradient(135deg,var(--gold),var(--gold-2));color:var(--navy);padding:6px 18px;border-radius:20px;font-size:.78rem;font-weight:800;letter-spacing:.5px;white-space:nowrap;box-shadow:0 4px 10px rgba(212,160,23,.4)}
.price-header{margin-bottom:16px}
.price-header h3{font-family:'Playfair Display',serif;color:var(--navy);font-size:1.6rem;margin-bottom:4px;font-weight:700}
.price-sub{color:var(--muted);font-size:.9rem;font-weight:500}
.price-card img{margin:12px auto 16px;object-fit:contain;width:220px;height:220px}
.price-featured img{width:240px;height:240px}
.price-tag{background:linear-gradient(135deg,#f8f5ef,#f4f7fb);padding:16px;border-radius:10px;margin-bottom:12px}
.price-per{font-family:'Playfair Display',serif;font-size:2.4rem;color:var(--navy);font-weight:800}
.price-per small{font-size:.9rem;color:var(--muted);font-weight:500;margin-left:2px}
.price-total{color:var(--ink);font-size:1.05rem;margin-bottom:6px}
.price-total strong{color:var(--navy);font-size:1.2rem}
.price-ship{color:var(--success);font-size:.9rem;font-weight:600;margin-bottom:6px}
.price-cards-img{margin-top:14px;color:var(--muted);font-size:.85rem}
.bonus-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;max-width:800px;margin:40px auto 0}
.bonus-card{background:linear-gradient(135deg,var(--cream),#fff);border:1px solid var(--line);border-radius:14px;padding:28px;display:flex;gap:20px;align-items:flex-start}
.bonus-icon{font-size:2.2rem;flex-shrink:0}
.bonus-card h3{color:var(--navy);font-size:1.15rem;margin-bottom:8px;font-weight:700}
.bonus-card p{color:var(--muted);font-size:.95rem;line-height:1.6}

/* Section 11 - Ingredients */
.ingredients{padding:80px 0;background:var(--cream)}
.ingredient-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:20px}
.ingredient-card{background:#fff;padding:28px 24px;border-radius:14px;border:1px solid var(--line);transition:all .25s;position:relative}
.ingredient-card:hover{transform:translateY(-4px);border-color:var(--teal);box-shadow:0 10px 24px rgba(15,43,77,.08)}
.ing-icon{font-size:2rem;margin-bottom:12px;display:block}
.ing-tag{display:inline-block;background:rgba(26,117,144,.12);color:var(--teal);padding:3px 10px;border-radius:10px;font-size:.72rem;font-weight:700;letter-spacing:.5px;text-transform:uppercase;margin-bottom:10px}
.ingredient-card h3{color:var(--navy);font-size:1.15rem;margin-bottom:10px;font-weight:700}
.ingredient-card p{color:var(--muted);font-size:.92rem;line-height:1.6}
.ing-footer{text-align:center;color:var(--muted);font-size:.95rem;margin-top:32px;font-style:italic;max-width:750px;margin-left:auto;margin-right:auto}

/* Section 12 - Benefits */
.benefits{padding:80px 0;background:#fff}
.benefits-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:20px}
.benefit-card{background:linear-gradient(135deg,#f8f5ef,#fff);padding:26px 20px;border-radius:12px;text-align:center;border:1px solid var(--line);transition:transform .2s}
.benefit-card:hover{transform:translateY(-4px)}
.ben-icon{font-size:2rem;margin-bottom:12px}
.benefit-card h3{color:var(--navy);font-size:1rem;margin-bottom:8px;font-weight:700}
.benefit-card p{color:var(--muted);font-size:.88rem;line-height:1.55}

/* Section 13 - Timeline */
.timeline-section{padding:80px 0;background:linear-gradient(135deg,#0f2b4d 0%,#1a3a63 100%);color:#fff;text-align:center}
.timeline-section .section-title{color:#fff}
.timeline-section .section-title em{color:var(--gold)}
.timeline-section .section-subtitle{color:#c8d3e0}
.timeline-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:20px;text-align:left}
.tl-card{background:rgba(255,255,255,.06);backdrop-filter:blur(8px);padding:30px 24px;border-radius:14px;border:1px solid rgba(255,255,255,.1);position:relative}
.tl-num{color:var(--gold);font-family:'Playfair Display',serif;font-size:2.2rem;font-weight:800;line-height:1;margin-bottom:10px}
.tl-week{display:inline-block;background:var(--gold);color:var(--navy);padding:4px 12px;border-radius:12px;font-size:.8rem;font-weight:700;letter-spacing:.5px;margin-bottom:14px}
.tl-card h3{color:#fff;font-size:1.15rem;margin-bottom:10px;font-weight:700}
.tl-card p{color:#c8d3e0;font-size:.92rem;line-height:1.6}
.tl-note{margin-top:30px;color:#c8d3e0;font-size:.9rem;text-align:center}

/* Section 14 - Comparison */
.comparison{padding:80px 0;background:#fff}
.table-wrap{max-width:960px;margin:20px auto;overflow-x:auto;border-radius:14px;box-shadow:0 4px 20px rgba(15,43,77,.08)}
.compare-table{width:100%;border-collapse:collapse;background:#fff}
.compare-table th,.compare-table td{padding:16px 18px;text-align:left;border-bottom:1px solid var(--line);font-size:.95rem}
.compare-table thead{background:var(--navy);color:#fff}
.compare-table thead th{font-weight:600;font-size:.92rem}
.compare-table thead .highlight-col{background:var(--gold);color:var(--navy)}
.compare-table tbody td.highlight-col{background:#fdf6e3;color:var(--navy);font-weight:600}
.compare-table td:first-child{font-weight:500;color:var(--ink)}
.compare-table tbody tr:hover{background:#f8fafc}
.compare-table tbody tr:hover td.highlight-col{background:#fbeecb}
.compare-note{text-align:center;color:var(--muted);font-size:.88rem;margin-top:18px;font-style:italic}

/* Section 15 - Reviews */
.reviews{padding:80px 0;background:var(--cream)}
.reviews-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:20px}
.review-card{background:#fff;padding:28px 24px;border-radius:14px;border:1px solid var(--line);position:relative;transition:transform .2s}
.review-card:hover{transform:translateY(-4px);box-shadow:0 10px 24px rgba(15,43,77,.08)}
.reviewer-avatar{width:70px;height:70px;border-radius:50%;object-fit:cover;margin-bottom:14px;border:3px solid var(--gold)}
.avatar-initial{width:70px;height:70px;border-radius:50%;background:linear-gradient(135deg,var(--navy),var(--teal));color:#fff;display:flex;align-items:center;justify-content:center;font-family:'Playfair Display',serif;font-size:1.6rem;font-weight:800;margin-bottom:14px;border:3px solid var(--gold)}
.rev-name{color:var(--navy);font-weight:700;font-size:1.05rem;margin-bottom:2px}
.verified{display:inline-block;background:#dcfce7;color:#15803d;font-size:.7rem;padding:2px 8px;border-radius:8px;font-weight:600;margin-left:6px;vertical-align:middle}
.rev-loc{color:var(--muted);font-size:.85rem;margin-bottom:8px}
.rev-stars{color:var(--gold);font-size:1.05rem;letter-spacing:2px;margin-bottom:12px}
.review-card p{color:var(--ink);font-size:.93rem;line-height:1.65;font-style:italic}

/* Section 16 - Guarantee */
.guarantee{padding:80px 0;background:linear-gradient(135deg,var(--cream) 0%,#fff 100%)}
.guarantee-grid{display:grid;grid-template-columns:auto 1fr;gap:50px;align-items:center;max-width:1000px;margin:0 auto}
.guarantee-seal img{max-width:220px;filter:drop-shadow(0 10px 25px rgba(212,160,23,.35))}
.guarantee-text h2{font-family:'Playfair Display',serif;color:var(--navy);font-size:clamp(1.5rem,2.5vw,2rem);margin-bottom:16px;font-weight:700}
.guarantee-text p{color:var(--muted);margin-bottom:14px;line-height:1.75;font-size:1rem}
.guarantee-text .btn{margin-top:12px}

/* Section 17 - Contraindications */
.contraindications{padding:80px 0;background:#fff}
.contra-list{max-width:850px;margin:30px auto 0}
.contra-item{display:flex;gap:20px;padding:22px;background:#fef2f2;border-left:4px solid var(--danger);border-radius:0 12px 12px 0;margin-bottom:16px;align-items:flex-start}
.contra-icon{font-size:1.8rem;flex-shrink:0}
.contra-item h3{color:var(--navy);font-size:1.1rem;margin-bottom:6px;font-weight:700}
.contra-item p{color:var(--muted);font-size:.95rem;line-height:1.6;margin:0}

/* Section 18 - FAQ */
.faq{padding:80px 0;background:var(--cream)}
.faq-list{max-width:820px;margin:20px auto 0}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:12px;overflow:hidden;transition:box-shadow .2s}
.faq-item[open]{box-shadow:0 4px 14px rgba(15,43,77,.06)}
.faq-item summary{padding:20px 24px;cursor:pointer;font-weight:600;color:var(--navy);font-size:1.03rem;list-style:none;position:relative;padding-right:50px;transition:color .2s}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);color:var(--teal);font-size:1.6rem;font-weight:400;transition:transform .2s;line-height:1}
.faq-item[open] summary::after{content:"−"}
.faq-item summary:hover{color:var(--teal)}
.faq-answer{padding:0 24px 22px;color:var(--muted);line-height:1.7;font-size:.98rem}
.faq-answer p{margin:0}

/* Section 19 - Medical Reviewer */
.reviewer-section{padding:60px 0;background:#fff}
.reviewer-card{max-width:820px;margin:0 auto;background:linear-gradient(135deg,var(--cream),#fff);border:1px solid var(--line);border-radius:16px;padding:36px;position:relative}
.rev-badge{position:absolute;top:-12px;left:32px;background:var(--teal);color:#fff;padding:6px 16px;border-radius:12px;font-size:.78rem;font-weight:700;letter-spacing:.5px}
.rev-content{display:flex;gap:24px;align-items:flex-start;margin-top:8px}
.rev-avatar{width:90px;height:90px;border-radius:50%;background:linear-gradient(135deg,var(--navy),var(--teal));color:#fff;display:flex;align-items:center;justify-content:center;font-family:'Playfair Display',serif;font-size:2rem;font-weight:800;flex-shrink:0;border:3px solid var(--gold)}
.rev-content h3{color:var(--navy);font-size:1.3rem;margin-bottom:4px;font-family:'Playfair Display',serif;font-weight:700}
.rev-title{color:var(--teal);font-weight:600;font-size:.95rem;margin-bottom:14px}
.rev-content p{color:var(--muted);font-size:.95rem;line-height:1.7;margin-bottom:10px}
.rev-cred{color:var(--ink);font-size:.85rem;padding-top:10px;border-top:1px solid var(--line);margin-top:12px}

/* Section 20 - References */
.references{padding:70px 0;background:var(--cream)}
.ref-list{max-width:900px;margin:20px auto 0;padding-left:28px}
.ref-list li{color:var(--ink);margin-bottom:14px;line-height:1.7;font-size:.95rem}
.ref-list li em{color:var(--navy);font-weight:500}
.ref-list li a{color:var(--teal);text-decoration:underline}
.ref-list li a:hover{color:var(--gold)}

/* Section 21 - Final CTA */
.final-cta{padding:80px 0;background:linear-gradient(135deg,var(--navy),#1a7590);color:#fff;text-align:center}
.final-cta h2{font-family:'Playfair Display',serif;font-size:clamp(1.7rem,3vw,2.4rem);margin-bottom:16px;color:#fff;font-weight:700}
.final-cta p{font-size:1.1rem;margin-bottom:28px;color:#d0dbe8}
.cta-trust{margin-top:22px;color:#c8d3e0;font-size:.9rem}

/* Footer */
footer{background:#0a1f38;color:#c8d3e0;padding:60px 0 20px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;margin-bottom:36px}
.foot-col h4{color:#fff;font-size:1rem;margin-bottom:16px;letter-spacing:.5px}
.foot-col ul{list-style:none}
.foot-col ul li{margin-bottom:8px}
.foot-col a{color:#c8d3e0;font-size:.92rem;transition:color .2s}
.foot-col a:hover{color:var(--gold)}
.foot-about{font-size:.9rem;line-height:1.65}
.foot-disclaimer{border-top:1px solid rgba(255,255,255,.1);padding-top:24px;font-size:.82rem;color:#8ea0b4;line-height:1.7}
.foot-disclaimer strong{color:#c8d3e0}
.copyright{margin-top:14px;text-align:center;color:#6a7a8f}

/* Social Proof Popup */
.social-proof{position:fixed;bottom:20px;left:20px;background:#fff;border-radius:12px;box-shadow:0 10px 30px rgba(0,0,0,.2);padding:14px 44px 14px 16px;display:flex;gap:12px;align-items:center;min-width:280px;max-width:340px;transform:translateX(-380px);opacity:0;transition:transform .4s,opacity .4s;z-index:9999;border:1px solid var(--line)}
.social-proof.show{transform:translateX(0);opacity:1}
.sp-close{position:absolute;top:6px;right:8px;background:none;border:none;font-size:1.3rem;color:var(--muted);cursor:pointer;line-height:1;padding:2px 6px;border-radius:4px}
.sp-close:hover{background:#f4f4f4;color:var(--danger)}
.sp-avatar{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,var(--gold),var(--gold-2));color:var(--navy);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:1.1rem;flex-shrink:0}
.sp-body{flex:1;line-height:1.3}
.sp-name{font-weight:700;color:var(--navy);font-size:.88rem}
.sp-action{color:var(--ink);font-size:.82rem}
.sp-time{color:var(--muted);font-size:.76rem;margin-top:2px}

/* Mobile Sticky CTA (below 900px) */
.mobile-cta{display:none;position:fixed;bottom:0;left:0;right:0;background:linear-gradient(135deg,var(--gold),var(--gold-2));color:var(--navy);text-align:center;padding:16px;font-weight:800;font-size:1.05rem;text-decoration:none;z-index:998;box-shadow:0 -4px 14px rgba(0,0,0,.15)}

/* Mobile toggle button */
.mobile-toggle{background:none;border:none;font-size:1.6rem;color:var(--navy);cursor:pointer;padding:4px 10px}

/* ==== RESPONSIVE — 900px ==== */
@media(max-width:900px){
  .trust-strip-grid{grid-template-columns:repeat(3,1fr);gap:24px}
  .two-col-grid{grid-template-columns:1fr;gap:30px;text-align:center}
  .two-col-grid.reverse{grid-template-columns:1fr}
  .two-col-grid .col-img img{max-width:340px}
  .benefit-list li{text-align:left;justify-content:flex-start}
  .pain-grid{grid-template-columns:repeat(2,1fr)}
  .mechanism-grid{grid-template-columns:repeat(2,1fr)}
  .pricing-grid{grid-template-columns:1fr;gap:20px}
  .price-featured{transform:none;order:-1}
  .price-featured:hover{transform:translateY(-6px)}
  .bonus-grid{grid-template-columns:1fr}
  .ingredient-grid{grid-template-columns:repeat(2,1fr)}
  .benefits-grid{grid-template-columns:repeat(2,1fr)}
  .timeline-grid{grid-template-columns:repeat(2,1fr)}
  .reviews-grid{grid-template-columns:1fr;max-width:500px;margin:20px auto 0}
  .guarantee-grid{grid-template-columns:1fr;text-align:center;gap:30px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .mobile-cta{display:block}
  body{padding-bottom:60px}
  .rev-content{flex-direction:column;text-align:center;align-items:center}
}

/* ==== RESPONSIVE — 560px ==== */
@media(max-width:560px){
  .container{padding:0 16px}
  section{padding:50px 0!important}
  .trust-strip{padding:20px 0}
  .trust-strip-grid{grid-template-columns:repeat(2,1fr);gap:18px}
  .pain-grid{grid-template-columns:1fr}
  .mechanism-grid{grid-template-columns:1fr}
  .ingredient-grid{grid-template-columns:1fr}
  .benefits-grid{grid-template-columns:1fr}
  .timeline-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;text-align:center}
  .foot-col{margin-bottom:12px}
  .price-card img{width:180px;height:180px}
  .price-featured img{width:200px;height:200px}
  .price-per{font-size:2rem}
  .section-title{font-size:1.5rem}
  .ai-answer-block{padding:20px 22px}
  .contra-item{padding:18px;flex-direction:column;gap:10px}
  .guarantee-seal img{max-width:160px}
  .social-proof{left:10px;right:10px;max-width:none;min-width:0}
  .reviewer-card{padding:26px 20px}
  .rev-avatar{width:70px;height:70px;font-size:1.6rem}
  .diagram-wrap{padding:16px}
}