/* ============================================
   Marka Wellness – Main Stylesheet
   Production-ready · Responsive · Accessible
   ============================================ */

/* ---------- 0. Custom Properties ---------- */
:root {
  --color-primary: #0F1C52;
  --color-secondary: #563D7C;
  --color-bg: #F8F9FA;
  --color-white: #FFFFFF;
  --color-accent: #E2E8F0;
  --color-text: #1A202C;
  --color-text-light: #718096;
  --color-border: #E2E8F0;
  --color-card-bg: #FFFFFF;
  --color-success: #28a745;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08);
  --shadow-md: 0 4px 14px rgba(0,0,0,.1);
  --shadow-lg: 0 10px 30px rgba(0,0,0,.12);
  --shadow-hover: 0 14px 40px rgba(0,0,0,.16);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-pill: 50px;
  --transition: .3s ease;
  --font-heading: 'Montserrat', sans-serif;
  --font-body: 'Open Sans', sans-serif;
  --nav-height: 72px;
  --container-max: 1200px;
}

/* Dark-mode overrides */
[data-theme="dark"] {
  --color-bg: #0D1117;
  --color-white: #161B22;
  --color-accent: #21262D;
  --color-text: #E6EDF3;
  --color-text-light: #8B949E;
  --color-border: #30363D;
  --color-card-bg: #161B22;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.3);
  --shadow-md: 0 4px 14px rgba(0,0,0,.4);
  --shadow-lg: 0 10px 30px rgba(0,0,0,.5);
  --shadow-hover: 0 14px 40px rgba(0,0,0,.55);
}

/* ---------- 1. Reset & Base ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:var(--nav-height)}
body{font-family:var(--font-body);font-size:16px;line-height:1.7;color:var(--color-text);background:var(--color-bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
img{max-width:100%;height:auto;display:block}
a{text-decoration:none;color:inherit;transition:color var(--transition)}
ul,ol{list-style:none}
button{font-family:inherit}

/* ---------- 2. Typography ---------- */
h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);font-weight:700;line-height:1.2;color:var(--color-text)}
h1{font-size:clamp(2rem,5vw,3.25rem)}
h2{font-size:clamp(1.6rem,4vw,2.25rem)}
h3{font-size:1.35rem}
h4{font-size:1.15rem}
p{margin-bottom:1rem;color:var(--color-text-light)}

/* ---------- 3. Layout Utilities ---------- */
.container{width:100%;max-width:var(--container-max);margin:0 auto;padding:0 24px}
.section{padding:80px 0}
.section-title{text-align:center;margin-bottom:14px}
.section-subtitle{text-align:center;max-width:620px;margin:0 auto 48px;color:var(--color-text-light)}

/* ---------- 4. Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 32px;border:none;border-radius:var(--radius-sm);font-family:var(--font-heading);font-size:.95rem;font-weight:600;cursor:pointer;transition:all var(--transition);text-decoration:none;line-height:1}
.btn-primary{background:linear-gradient(135deg,var(--color-primary),var(--color-secondary));color:#fff;box-shadow:0 4px 15px rgba(86,61,124,.3)}
.btn-primary:hover,.btn-primary:focus-visible{transform:translateY(-2px);box-shadow:0 6px 22px rgba(86,61,124,.45)}
.btn-outline{background:transparent;color:var(--color-primary);border:2px solid var(--color-primary)}
.btn-outline:hover,.btn-outline:focus-visible{background:var(--color-primary);color:#fff}
[data-theme="dark"] .btn-outline{color:#A78BFA;border-color:#A78BFA}
[data-theme="dark"] .btn-outline:hover{background:#A78BFA;color:#0D1117}
.btn-buy{background:linear-gradient(135deg,#28a745,#20c997);color:#fff;font-size:1.1rem;padding:16px 48px;border-radius:var(--radius-md);box-shadow:0 4px 15px rgba(40,167,69,.3)}
.btn-buy:hover,.btn-buy:focus-visible{transform:translateY(-2px);box-shadow:0 8px 25px rgba(40,167,69,.45)}
.btn-sm{padding:10px 22px;font-size:.82rem}

/* ---------- 5. Navigation ---------- */
.navbar{position:fixed;top:0;left:0;width:100%;height:var(--nav-height);background:rgba(255,255,255,.97);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);box-shadow:var(--shadow-sm);z-index:1000;transition:all var(--transition)}
[data-theme="dark"] .navbar{background:rgba(22,27,34,.97)}
.navbar .container{display:flex;align-items:center;justify-content:space-between;height:100%}
.navbar-logo{display:flex;align-items:center;gap:10px;font-family:var(--font-heading);font-size:1.45rem;font-weight:800;color:var(--color-primary)}
[data-theme="dark"] .navbar-logo{color:#fff}
.navbar-logo img{height:38px;width:auto}
.navbar-menu{display:flex;align-items:center;gap:30px}
.navbar-menu a{font-family:var(--font-heading);font-size:.88rem;font-weight:600;color:var(--color-text);position:relative;padding:4px 0}
.navbar-menu a::after{content:'';position:absolute;bottom:-2px;left:0;width:0;height:2.5px;background:linear-gradient(90deg,var(--color-primary),var(--color-secondary));border-radius:2px;transition:width var(--transition)}
.navbar-menu a:hover::after,.navbar-menu a.active::after{width:100%}
.theme-toggle{background:none;border:2px solid var(--color-border);border-radius:50%;width:40px;height:40px;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:1.15rem;color:var(--color-text);transition:all var(--transition)}
.theme-toggle:hover,.theme-toggle:focus-visible{border-color:var(--color-primary);color:var(--color-primary)}
[data-theme="dark"] .theme-toggle:hover{border-color:#A78BFA;color:#A78BFA}
.lang-switch{display:flex;align-items:center;gap:0;border:2px solid var(--color-border);border-radius:var(--radius-pill);overflow:hidden}
.lang-btn{padding:6px 14px;font-family:var(--font-heading);font-size:.75rem;font-weight:700;letter-spacing:.5px;background:transparent;color:var(--color-text-light);border:none;cursor:pointer;transition:all var(--transition)}
.lang-btn.active{background:linear-gradient(135deg,var(--color-primary),var(--color-secondary));color:#fff}
.lang-btn:hover:not(.active){color:var(--color-primary)}
[data-theme="dark"] .lang-btn:hover:not(.active){color:#A78BFA}
.hamburger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px}
.hamburger span{display:block;width:24px;height:2.5px;background:var(--color-text);transition:all var(--transition);border-radius:2px}

/* ---------- 6. Hero Section ---------- */
.hero{position:relative;min-height:620px;display:flex;align-items:center;justify-content:center;text-align:center;padding:calc(var(--nav-height) + 60px) 24px 80px;background:linear-gradient(135deg,var(--color-primary) 0%,var(--color-secondary) 55%,#7C3AED 100%);overflow:hidden}
.hero::before{content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle at 30% 50%,rgba(255,255,255,.06) 0%,transparent 50%),radial-gradient(circle at 70% 80%,rgba(255,255,255,.04) 0%,transparent 40%);animation:heroFloat 20s ease-in-out infinite}
@keyframes heroFloat{0%,100%{transform:translate(0,0) rotate(0)}33%{transform:translate(30px,-30px) rotate(1deg)}66%{transform:translate(-20px,20px) rotate(-1deg)}}
.hero::after{content:'';position:absolute;bottom:0;left:0;width:100%;height:120px;background:linear-gradient(to top,var(--color-bg),transparent)}
.hero-content{position:relative;z-index:2;max-width:720px}
.hero h1{color:#fff;margin-bottom:20px;letter-spacing:-.5px}
.hero p{font-size:1.2rem;color:rgba(255,255,255,.85);margin-bottom:36px;line-height:1.8}
.hero .btn{background:#fff;color:var(--color-primary);box-shadow:0 4px 20px rgba(0,0,0,.2)}
.hero .btn:hover{transform:translateY(-3px);box-shadow:0 8px 30px rgba(0,0,0,.3)}
.hero-buttons{display:flex;flex-wrap:wrap;justify-content:center;gap:16px;margin-top:8px}
.hero .btn-outline{background:rgba(255,255,255,.15);backdrop-filter:blur(8px);color:#fff;border:2px solid rgba(255,255,255,.4);box-shadow:0 4px 20px rgba(0,0,0,.15)}
.hero .btn-outline:hover{background:rgba(255,255,255,.25);border-color:rgba(255,255,255,.6);transform:translateY(-3px);box-shadow:0 8px 30px rgba(0,0,0,.25)}

/* ---------- 7. Filter Buttons ---------- */
.filter-section{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;margin-bottom:48px}
.filter-btn{padding:10px 26px;border:2px solid var(--color-border);border-radius:var(--radius-pill);background:var(--color-card-bg);font-family:var(--font-heading);font-size:.84rem;font-weight:600;color:var(--color-text);cursor:pointer;transition:all var(--transition)}
.filter-btn:hover,.filter-btn:focus-visible{border-color:var(--color-primary);color:var(--color-primary)}
[data-theme="dark"] .filter-btn:hover{border-color:#A78BFA;color:#A78BFA}
.filter-btn.active{background:linear-gradient(135deg,var(--color-primary),var(--color-secondary));color:#fff;border-color:transparent;box-shadow:0 4px 14px rgba(86,61,124,.35)}

/* ---------- 8. Product Grid ---------- */
.product-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:28px}
.product-card{background:var(--color-card-bg);border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-sm);transition:all .4s ease;display:flex;flex-direction:column;border:1px solid var(--color-border)}
.product-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-hover)}
.product-card-img{position:relative;width:100%;padding-top:100%;background:var(--color-accent);overflow:hidden}
.product-card-img img{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.product-card:hover .product-card-img img{transform:scale(1.06)}
.product-card-badge{position:absolute;top:12px;left:12px;padding:5px 14px;border-radius:var(--radius-pill);font-size:.7rem;font-weight:700;font-family:var(--font-heading);text-transform:uppercase;letter-spacing:.5px;color:#fff;background:linear-gradient(135deg,var(--color-primary),var(--color-secondary));z-index:2}
.product-card-body{padding:22px;display:flex;flex-direction:column;flex:1}
.product-card-body h3{font-size:1.1rem;margin-bottom:6px}
.product-card-body .tagline{font-size:.85rem;color:var(--color-text-light);margin-bottom:14px;flex:1}
.product-card-footer{display:flex;flex-direction:column;gap:8px;padding-top:14px;border-top:1px solid var(--color-border)}
.product-price-row{display:flex;flex-direction:column;gap:4px}
.product-price{font-family:var(--font-heading);font-size:1.4rem;font-weight:800;color:var(--color-primary);line-height:1.2}
[data-theme="dark"] .product-price{color:#A78BFA}
.product-price-distributor{font-family:var(--font-heading);font-size:.85rem;font-weight:600;color:var(--color-text-light);display:flex;align-items:center;gap:4px}
.product-price-distributor .product-price-usd{font-size:.9rem;font-weight:700;color:var(--color-secondary);margin-top:0}
[data-theme="dark"] .product-price-distributor .product-price-usd{color:#A78BFA}
.product-price-usd{display:block;font-family:var(--font-heading);font-size:.78rem;font-weight:600;color:var(--color-text-light);margin-top:2px}
.price-usd-detail{font-size:1.3rem!important;color:var(--color-text-light)!important}

/* ---------- 9. Product Detail – Banner ---------- */
.product-banner{position:relative;padding:calc(var(--nav-height) + 60px) 24px 60px;background:linear-gradient(135deg,var(--color-primary),var(--color-secondary));text-align:center;color:#fff;overflow:hidden}
.product-banner::after{content:'';position:absolute;bottom:0;left:0;width:100%;height:80px;background:linear-gradient(to top,var(--color-bg),transparent)}
.product-banner h1{color:#fff;margin-bottom:10px}
.product-banner .series-label{display:inline-block;padding:6px 22px;border-radius:var(--radius-pill);background:rgba(255,255,255,.15);font-family:var(--font-heading);font-size:.85rem;font-weight:600;margin-bottom:28px;backdrop-filter:blur(4px)}
.product-banner-image{max-width:340px;margin:0 auto;border-radius:var(--radius-lg);overflow:hidden;box-shadow:0 20px 60px rgba(0,0,0,.3);position:relative;z-index:2}
.product-banner-image img{width:100%;display:block}

/* ---------- 10. Product Detail – Content ---------- */
.product-detail{padding:60px 0 80px}
.product-detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.product-info h2{margin-bottom:20px}
.product-info p{line-height:1.85}
.ingredient-list{display:flex;flex-wrap:wrap;gap:10px;margin:20px 0 28px}
.ingredient-tag{padding:7px 18px;background:var(--color-accent);border-radius:var(--radius-pill);font-size:.84rem;font-weight:600;font-family:var(--font-heading);color:var(--color-primary)}
[data-theme="dark"] .ingredient-tag{color:#A78BFA}
.pricing-card{background:var(--color-card-bg);border-radius:var(--radius-md);padding:32px;box-shadow:var(--shadow-md);text-align:center;position:sticky;top:calc(var(--nav-height) + 24px);border:1px solid var(--color-border);box-sizing:border-box}
.pricing-card h3{margin-bottom:28px}
.price-primary-row{display:flex;flex-direction:column;align-items:flex-end;margin-bottom:20px;padding-bottom:20px;border-bottom:1px solid var(--color-border)}
.price-value-primary{font-family:var(--font-heading);font-size:30px;font-weight:700;color:var(--color-primary);line-height:1.2;text-align:right}
[data-theme="dark"] .price-value-primary{color:#A78BFA}
.price-usd-retail{font-family:var(--font-heading);font-size:14px;font-weight:400;color:var(--color-text-light);opacity:0.7;margin-top:4px;text-align:right}
.distributor-price-box{background:var(--color-accent);border:1px solid var(--color-border);border-radius:var(--radius-sm);padding:16px;margin-bottom:16px;text-align:center}
.distributor-label{display:block;font-family:var(--font-heading);font-size:13px;font-weight:600;color:var(--color-text-light);margin-bottom:8px}
.distributor-price-value{display:block;font-family:var(--font-heading);font-size:20px;font-weight:600;color:var(--color-secondary);line-height:1.2}
[data-theme="dark"] .distributor-price-box{border-color:var(--color-border);background:rgba(167,139,250,.08)}
[data-theme="dark"] .distributor-price-value{color:#A78BFA}
.distributor-helper{font-size:14px;color:var(--color-text-light);margin-bottom:20px;text-align:center;line-height:1.5}
.pricing-buttons{display:flex;flex-direction:column;gap:16px;width:100%;box-sizing:border-box}
.pricing-card .btn-distributor,.pricing-card .btn-buy{width:100%;max-width:100%;box-sizing:border-box;margin:0;padding:14px 24px}
.pricing-card .note{font-size:.8rem;color:var(--color-text-light);margin-top:16px;text-align:center}
.distributor-link{display:block;text-align:center;margin-top:18px;padding:10px 16px;border-radius:var(--radius-sm);font-family:var(--font-heading);font-size:.82rem;font-weight:600;color:var(--color-secondary);background:var(--color-accent);transition:all var(--transition);text-decoration:none}
.distributor-link:hover{background:var(--color-secondary);color:#fff}
[data-theme="dark"] .distributor-link{color:#A78BFA;background:var(--color-accent)}
[data-theme="dark"] .distributor-link:hover{background:#A78BFA;color:#0D1117}
.back-link{display:inline-flex;align-items:center;gap:8px;margin-top:36px;font-weight:600;color:var(--color-primary);font-family:var(--font-heading);transition:gap var(--transition)}
[data-theme="dark"] .back-link{color:#A78BFA}
.back-link:hover{gap:14px}

/* ---------- 11. About Section ---------- */
.about-section{background:var(--color-white)}
.about-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.about-card{text-align:center;padding:36px 24px;border-radius:var(--radius-md);background:var(--color-bg);transition:all var(--transition);border:1px solid transparent}
.about-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--color-border)}
.about-card-icon{width:68px;height:68px;margin:0 auto 20px;border-radius:50%;background:linear-gradient(135deg,var(--color-primary),var(--color-secondary));display:flex;align-items:center;justify-content:center;font-size:1.5rem;color:#fff}
.about-card h3{margin-bottom:10px;font-size:1.05rem}
.about-card p{font-size:.9rem}

/* ---------- 12. Contact Section ---------- */
.contact-section{background:var(--color-bg)}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px}
.contact-info-item{display:flex;align-items:flex-start;gap:16px;margin-bottom:24px}
.contact-info-item i{width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,var(--color-primary),var(--color-secondary));display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.1rem;flex-shrink:0}
.contact-info-item div p{margin-bottom:0}
.contact-info-item div h4{margin-bottom:4px}
.contact-form input,.contact-form textarea{width:100%;padding:14px 18px;border:2px solid var(--color-border);border-radius:var(--radius-sm);font-family:var(--font-body);font-size:.95rem;color:var(--color-text);background:var(--color-card-bg);margin-bottom:16px;transition:border-color var(--transition)}
.contact-form input:focus,.contact-form textarea:focus{outline:none;border-color:var(--color-primary)}
[data-theme="dark"] .contact-form input:focus,[data-theme="dark"] .contact-form textarea:focus{border-color:#A78BFA}
.contact-form textarea{height:140px;resize:vertical}
.contact-form .turnstile-wrap{margin:12px 0}
.contact-form .hp-field{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}

/* ---------- 13. Footer ---------- */
.footer{background:var(--color-primary);color:rgba(255,255,255,.8);padding:60px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer h4{color:#fff;font-size:1.05rem;margin-bottom:20px}
.footer-brand p{color:rgba(255,255,255,.6);font-size:.9rem;line-height:1.75}
.footer-links a{display:block;padding:5px 0;color:rgba(255,255,255,.6);font-size:.9rem;transition:color var(--transition)}
.footer-links a:hover{color:#fff}
.footer-contact p{display:flex;align-items:center;gap:8px;color:rgba(255,255,255,.6);font-size:.9rem;margin-bottom:10px}
.social-icons{display:flex;gap:12px;margin-top:18px}
.social-icons a{width:42px;height:42px;border-radius:50%;background:rgba(255,255,255,.08);display:flex;align-items:center;justify-content:center;color:#fff;font-size:1rem;transition:all var(--transition)}
.social-icons a:hover{background:var(--color-secondary);transform:translateY(-3px)}
.footer-bottom{text-align:center;padding:24px 0;color:rgba(255,255,255,.4);font-size:.85rem}

/* ---------- 14. Mobile Nav Overlay ---------- */
.mobile-nav{position:fixed;top:0;right:-100%;width:300px;height:100vh;background:var(--color-card-bg);box-shadow:var(--shadow-lg);z-index:1001;padding:calc(var(--nav-height) + 24px) 32px 32px;transition:right .35s ease}
.mobile-nav.active{right:0}
.mobile-nav a{display:block;padding:16px 0;font-family:var(--font-heading);font-size:1.1rem;font-weight:600;border-bottom:1px solid var(--color-border);color:var(--color-text)}
.mobile-nav .theme-toggle{margin-top:20px}
.mobile-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,.5);z-index:1000;opacity:0;visibility:hidden;transition:all var(--transition)}
.mobile-overlay.active{opacity:1;visibility:visible}

/* ---------- 15. Scroll-to-top Button ---------- */
.scroll-top{position:fixed;bottom:24px;right:24px;width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,var(--color-primary),var(--color-secondary));color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;border:none;box-shadow:var(--shadow-md);opacity:0;visibility:hidden;transition:all var(--transition);z-index:100;font-size:1.2rem}
.scroll-top.visible{opacity:1;visibility:visible}
.scroll-top:hover,.scroll-top:focus-visible{transform:translateY(-3px);box-shadow:var(--shadow-lg)}

/* ---------- 16. Animations ---------- */
@keyframes fadeInUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}
.fade-in-up{animation:fadeInUp .55s ease forwards}

/* ---------- 17. Screen-reader only ---------- */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ---------- 18. Image Placeholder (fallback) ---------- */
.img-placeholder{position:absolute;top:0;left:0;width:100%;height:100%;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--color-primary),var(--color-secondary));color:#fff;font-family:var(--font-heading);font-weight:700;font-size:1rem;text-align:center;padding:20px}

/* ---------- 19. Responsive ---------- */
@media(max-width:992px){
  .product-detail-grid{grid-template-columns:1fr}
  .pricing-card{position:static}
  .about-grid{grid-template-columns:1fr 1fr}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .navbar-menu{display:none}
  .hamburger{display:flex}
  .hero{min-height:520px;padding:calc(var(--nav-height) + 40px) 24px 60px}
  .product-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:20px}
  .section{padding:60px 0}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .product-banner h1{font-size:2rem}
  .pricing-card{padding:24px;position:static}
  .pricing-buttons{gap:12px}
  .pricing-card .btn-distributor,.pricing-card .btn-buy{padding:12px 20px;font-size:.9rem}
  .about-grid{grid-template-columns:1fr}
}
@media(max-width:420px){
  .pricing-card .btn-distributor{font-size:.85rem;white-space:normal;line-height:1.3}
}
@media(max-width:480px){
  .product-grid{grid-template-columns:1fr}
  .filter-section{gap:8px}
  .filter-btn{padding:8px 16px;font-size:.78rem}
}