/* Kočičí Zdraví — Scandinavian scientific design system */
:root{
  --white:#ffffff;
  --bg:#fafbfc;
  --gray-50:#f4f6f8;
  --gray-100:#eceff2;
  --gray-200:#dde2e7;
  --gray-500:#6b7580;
  --gray-700:#3d4650;
  --ink:#1c232b;
  --blue:#a8c5e0;
  --blue-strong:#5c8bb8;
  --blue-dark:#2f5f8a;
  --green:#b8d4c4;
  --green-strong:#6ba189;
  --beige:#efe6d6;
  --beige-strong:#d9c9ac;
  --shadow-sm:0 1px 2px rgba(20,30,45,.04), 0 2px 8px rgba(20,30,45,.04);
  --shadow-md:0 6px 24px rgba(20,30,45,.06), 0 2px 8px rgba(20,30,45,.04);
  --shadow-lg:0 20px 50px rgba(20,30,45,.10);
  --radius:18px;
  --radius-sm:12px;
  --radius-lg:28px;
  --container:1200px;
  --font-serif:"Cormorant Garamond", "Georgia", serif;
  --font-sans:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-sans);
  color:var(--ink);
  background:var(--white);
  line-height:1.65;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--blue-dark);text-decoration:none;transition:color .2s}
a:hover{color:var(--ink)}
button{font-family:inherit;cursor:pointer;border:none;background:none}
ul{list-style:none}

h1,h2,h3,h4{font-family:var(--font-serif);font-weight:600;line-height:1.15;color:var(--ink);letter-spacing:-.01em}
h1{font-size:clamp(2.2rem,5vw,3.8rem)}
h2{font-size:clamp(1.8rem,3.5vw,2.6rem);margin-bottom:.6rem}
h3{font-size:1.35rem;margin-bottom:.4rem}
h4{font-size:1.05rem;font-family:var(--font-sans);font-weight:600}
p{color:var(--gray-700);margin-bottom:1rem}
.lead{font-size:1.15rem;color:var(--gray-700);max-width:640px}

.container{max-width:var(--container);margin:0 auto;padding:0 1.25rem}
section{padding:5rem 0}
.eyebrow{display:inline-block;font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:var(--blue-dark);font-weight:600;margin-bottom:.75rem}
.section-head{text-align:center;max-width:720px;margin:0 auto 3rem}
.section-head p{color:var(--gray-500)}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.85rem 1.6rem;border-radius:100px;font-weight:600;font-size:.95rem;transition:all .25s ease;border:1.5px solid transparent}
.btn-primary{background:var(--ink);color:var(--white)}
.btn-primary:hover{background:var(--blue-dark);color:var(--white);transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn-outline{border-color:var(--gray-200);color:var(--ink);background:var(--white)}
.btn-outline:hover{border-color:var(--ink);color:var(--ink)}
.btn-soft{background:var(--blue);color:var(--ink)}
.btn-soft:hover{background:var(--blue-strong);color:var(--white)}

/* NAV */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.85);backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid var(--gray-100)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;padding:1rem 1.25rem;max-width:var(--container);margin:0 auto}
.logo{display:flex;align-items:center;gap:.6rem;font-family:var(--font-serif);font-size:1.35rem;font-weight:600;color:var(--ink)}
.logo-mark{width:36px;height:36px;border-radius:12px;background:linear-gradient(135deg,var(--blue) 0%,var(--green) 100%);display:grid;place-items:center;color:var(--white);font-family:var(--font-serif);font-size:1.1rem}
.nav-links{display:flex;gap:.4rem;align-items:center}
.nav-links a{color:var(--gray-700);font-size:.93rem;padding:.5rem .85rem;border-radius:8px;font-weight:500;transition:all .2s}
.nav-links a:hover, .nav-links a.active{background:var(--gray-50);color:var(--ink)}
.nav-cta{margin-left:.5rem}
.nav-toggle{display:none;width:44px;height:44px;border-radius:12px;background:var(--gray-50);align-items:center;justify-content:center}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--ink);position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:20px;height:2px;background:var(--ink);transition:.25s}
.nav-toggle span::before{top:-6px}.nav-toggle span::after{top:6px}
.nav-open .nav-toggle span{background:transparent}
.nav-open .nav-toggle span::before{transform:rotate(45deg);top:0}
.nav-open .nav-toggle span::after{transform:rotate(-45deg);top:0}

@media (max-width:900px){
  .nav-toggle{display:inline-flex}
  .nav-links{position:fixed;inset:70px 0 auto 0;flex-direction:column;background:var(--white);padding:1rem;gap:.25rem;border-bottom:1px solid var(--gray-100);transform:translateY(-120%);transition:transform .3s;box-shadow:var(--shadow-md)}
  .nav-links a{width:100%;padding:.9rem 1rem}
  .nav-open .nav-links{transform:translateY(0)}
}

/* HERO */
.hero{padding:4rem 0 5rem;background:linear-gradient(180deg,var(--white) 0%,var(--gray-50) 100%);overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:center}
.hero h1{margin-bottom:1.25rem}
.hero-cta{display:flex;gap:.75rem;margin-top:1.5rem;flex-wrap:wrap}
.hero-media{position:relative}
.hero-media img{border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);aspect-ratio:4/3;object-fit:cover}
.hero-badge{position:absolute;bottom:-18px;left:-18px;background:var(--white);border-radius:var(--radius);padding:1rem 1.25rem;box-shadow:var(--shadow-md);display:flex;align-items:center;gap:.75rem;max-width:260px}
.hero-badge .dot{width:44px;height:44px;border-radius:14px;background:var(--green);display:grid;place-items:center;color:var(--white);font-size:1.3rem}
.hero-badge strong{display:block;font-size:.95rem;color:var(--ink)}
.hero-badge span{font-size:.8rem;color:var(--gray-500)}
@media (max-width:900px){.hero-grid{grid-template-columns:1fr}.hero-badge{left:auto;right:12px}}

/* Card grids */
.grid{display:grid;gap:1.5rem}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
@media (max-width:900px){.grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}}
@media (max-width:600px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}

.card{background:var(--white);border:1px solid var(--gray-100);border-radius:var(--radius);padding:1.75rem;transition:all .3s;position:relative}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--gray-200)}
.card .icon{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;margin-bottom:1rem;font-size:1.4rem;background:var(--gray-50);color:var(--blue-dark)}
.card.blue .icon{background:#e8f1f9;color:var(--blue-dark)}
.card.green .icon{background:#e5f0ea;color:var(--green-strong)}
.card.beige .icon{background:#faf3e6;color:#a68656}
.card h3{margin-bottom:.5rem;font-family:var(--font-sans);font-size:1.1rem;font-weight:600;letter-spacing:0}
.card p{font-size:.95rem;color:var(--gray-500);margin:0}

/* Feature block */
.feature{background:var(--gray-50)}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:2rem;text-align:center}
@media (max-width:700px){.stat-grid{grid-template-columns:repeat(2,1fr)}}
.stat .num{font-family:var(--font-serif);font-size:3rem;color:var(--blue-dark);line-height:1;font-weight:600}
.stat .lbl{color:var(--gray-500);font-size:.9rem;margin-top:.4rem}

/* Testimonials */
.tcard{background:var(--white);border-radius:var(--radius);padding:1.75rem;border:1px solid var(--gray-100);position:relative}
.tcard::before{content:"\201C";position:absolute;top:6px;right:20px;font-family:var(--font-serif);font-size:5rem;color:var(--gray-100);line-height:1}
.tcard p{font-size:1rem;color:var(--gray-700);font-style:italic;margin-bottom:1.25rem;position:relative;z-index:1}
.tmeta{display:flex;align-items:center;gap:.75rem}
.tavatar{width:44px;height:44px;border-radius:50%;background:var(--blue);display:grid;place-items:center;color:var(--white);font-weight:600}
.tmeta strong{display:block;font-size:.92rem;color:var(--ink)}
.tmeta span{font-size:.82rem;color:var(--gray-500)}

/* Article cards */
.article{background:var(--white);border-radius:var(--radius);overflow:hidden;border:1px solid var(--gray-100);transition:all .3s;display:flex;flex-direction:column}
.article:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.article img{aspect-ratio:16/10;object-fit:cover;width:100%}
.article-body{padding:1.5rem;display:flex;flex-direction:column;flex:1}
.article-meta{display:flex;gap:.75rem;font-size:.8rem;color:var(--gray-500);margin-bottom:.75rem}
.tag{display:inline-block;font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--blue-dark);background:#e8f1f9;padding:.25rem .6rem;border-radius:100px;font-weight:600}
.article h3{margin-bottom:.6rem;font-size:1.2rem}
.article p{color:var(--gray-500);font-size:.93rem;margin-bottom:1.25rem;flex:1}
.article .btn{align-self:flex-start;padding:.55rem 1.1rem;font-size:.85rem}

/* Newsletter / CTA banner */
.cta-banner{background:linear-gradient(135deg,var(--ink) 0%,#2c3844 100%);color:var(--white);border-radius:var(--radius-lg);padding:3.5rem 3rem;text-align:center;position:relative;overflow:hidden}
.cta-banner::before{content:"";position:absolute;inset:auto -100px -100px auto;width:340px;height:340px;background:radial-gradient(circle,var(--blue-strong) 0%,transparent 70%);opacity:.35}
.cta-banner h2{color:var(--white)}
.cta-banner p{color:rgba(255,255,255,.75);max-width:560px;margin:0 auto 1.75rem}
.newsletter-form{display:flex;gap:.5rem;max-width:480px;margin:0 auto;position:relative;z-index:1}
.newsletter-form input{flex:1;padding:.95rem 1.25rem;border-radius:100px;border:none;font-size:.95rem;font-family:inherit;background:rgba(255,255,255,.12);color:var(--white)}
.newsletter-form input::placeholder{color:rgba(255,255,255,.6)}
.newsletter-form input:focus{outline:2px solid var(--blue);background:rgba(255,255,255,.18)}
.newsletter-form .btn{background:var(--white);color:var(--ink)}
@media (max-width:600px){.newsletter-form{flex-direction:column}.cta-banner{padding:2.5rem 1.5rem}}

/* Page header */
.page-header{padding:5rem 0 3rem;background:linear-gradient(180deg,var(--gray-50) 0%,var(--white) 100%);text-align:center}
.page-header .eyebrow{color:var(--green-strong)}

/* Split content */
.split{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:center}
.split img{border-radius:var(--radius-lg);box-shadow:var(--shadow-md);aspect-ratio:4/3;object-fit:cover}
.split ul{margin-top:1rem}
.split li{padding:.5rem 0 .5rem 1.75rem;position:relative;color:var(--gray-700)}
.split li::before{content:"";position:absolute;left:0;top:1.05rem;width:10px;height:10px;border-radius:50%;background:var(--green-strong)}
@media (max-width:900px){.split{grid-template-columns:1fr}}

/* FAQ */
.faq{max-width:820px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--gray-100);padding:1.25rem 0}
.faq-q{width:100%;text-align:left;display:flex;justify-content:space-between;align-items:center;gap:1rem;font-size:1.05rem;font-weight:600;color:var(--ink);padding:.5rem 0}
.faq-q::after{content:"+";font-size:1.5rem;color:var(--blue-dark);transition:transform .3s;font-weight:400}
.faq-item.open .faq-q::after{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;color:var(--gray-500)}
.faq-item.open .faq-a{max-height:400px;padding-top:.75rem}

/* Comparison */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem}
.compare-card{padding:2rem;border-radius:var(--radius);border:1px solid var(--gray-100)}
.compare-card.good{background:#f2f8f5;border-color:#d5e8de}
.compare-card.bad{background:#fbf6f0;border-color:#ede0cd}
.compare-card h4{margin-bottom:1rem;font-size:1.1rem}
.compare-card li{padding:.5rem 0 .5rem 1.75rem;position:relative;font-size:.95rem;color:var(--gray-700)}
.compare-card.good li::before{content:"✓";position:absolute;left:0;color:var(--green-strong);font-weight:700}
.compare-card.bad li::before{content:"×";position:absolute;left:0;color:#c67d5b;font-weight:700;font-size:1.2rem;top:.3rem}
@media (max-width:700px){.compare{grid-template-columns:1fr}}

/* Contact form */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:flex-start}
@media (max-width:900px){.contact-grid{grid-template-columns:1fr}}
.contact-media img{border-radius:var(--radius-lg);box-shadow:var(--shadow-md)}
.trust-list{margin-top:1.5rem;display:grid;gap:.75rem}
.trust-list li{display:flex;align-items:flex-start;gap:.75rem;color:var(--gray-700);font-size:.95rem}
.trust-list li::before{content:"";display:block;width:24px;height:24px;border-radius:8px;background:var(--green);flex-shrink:0;position:relative}
.form{background:var(--white);border:1px solid var(--gray-100);border-radius:var(--radius-lg);padding:2rem;box-shadow:var(--shadow-sm)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin-bottom:1rem}
@media (max-width:600px){.form-row{grid-template-columns:1fr}}
.field{margin-bottom:1rem}
.field label{display:block;font-size:.85rem;color:var(--gray-700);margin-bottom:.4rem;font-weight:500}
.field input,.field textarea{width:100%;padding:.85rem 1rem;border:1.5px solid var(--gray-200);border-radius:12px;font-family:inherit;font-size:.95rem;color:var(--ink);background:var(--white);transition:border-color .2s}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--blue-strong)}
.field textarea{min-height:120px;resize:vertical}
.check{display:flex;gap:.6rem;align-items:flex-start;font-size:.87rem;color:var(--gray-500);margin:1rem 0}
.check input{width:18px;height:18px;margin-top:2px;flex-shrink:0;accent-color:var(--blue-dark)}
.form-success{background:#e5f0ea;color:var(--green-strong);padding:.85rem 1rem;border-radius:12px;font-size:.9rem;margin-top:1rem;display:none}
.form-success.show{display:block}

/* Footer */
footer{background:var(--ink);color:rgba(255,255,255,.7);padding:4rem 0 2rem;margin-top:4rem}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:2.5rem;margin-bottom:3rem}
@media (max-width:800px){.foot-grid{grid-template-columns:1fr 1fr}}
@media (max-width:500px){.foot-grid{grid-template-columns:1fr}}
footer h4{color:var(--white);margin-bottom:1rem;font-size:.95rem;font-family:var(--font-sans);letter-spacing:.02em}
footer p{color:rgba(255,255,255,.55);font-size:.9rem}
footer ul li{margin-bottom:.6rem}
footer ul a{color:rgba(255,255,255,.65);font-size:.9rem}
footer ul a:hover{color:var(--white)}
.foot-brand .logo{color:var(--white)}
.copyright{border-top:1px solid rgba(255,255,255,.1);padding-top:1.5rem;text-align:center;font-size:.85rem;color:rgba(255,255,255,.5)}

/* Reveal on scroll */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

/* Utilities */
.text-center{text-align:center}
.mt-2{margin-top:2rem}