/* Kola Jitro — Winter Frost design system */

:root{
  --petrol: #0b3b4a;
  --petrol-dark: #072a35;
  --apricot: #f3a35c;
  --apricot-dark: #d8813a;
  --beige: #f3e9da;
  --ice: #eaf4f6;
  --frost: #ffffff;
  --ink: #0c2129;
  --line: #c9dadf;
  --radius: 14px;
  --radius-lg: 26px;
  --shadow: 0 10px 30px -12px rgba(11,59,74,.35);
  --font-display: Georgia, 'Iowan Old Style', 'Times New Roman', serif;
  --font-body: 'Segoe UI', system-ui, -apple-system, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'Consolas', 'SFMono-Regular', Menlo, monospace;
  --maxw: 1180px;
  --gutter: clamp(1.2rem, 5vw, 3rem);
}

*,*::before,*::after{box-sizing:border-box}
html,body{overflow-x:clip}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--ink);
  background:var(--ice);
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--petrol);text-decoration:none}
h1,h2,h3,h4{font-family:var(--font-display);margin:0 0 .5em;line-height:1.1;color:var(--petrol-dark)}
p{margin:0 0 1em}
ul{margin:0;padding:0}
button{font-family:inherit}

.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip-link{position:absolute;left:-999px;top:0;background:var(--apricot);color:var(--petrol-dark);padding:.6em 1em;z-index:200}
.skip-link:focus{left:0}

:focus-visible{outline:3px solid var(--apricot);outline-offset:2px}

@media (prefers-reduced-motion: reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* ===== Layout helpers ===== */
.wrap{max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-block:clamp(3rem,7vw,6rem)}
.grid{display:grid;gap:clamp(1rem,3vw,2rem)}
.grid--2{grid-template-columns:1fr}
.grid--3{grid-template-columns:1fr}
.grid--cards{grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}
@media (min-width:760px){
  .grid--2{grid-template-columns:1fr 1fr}
  .grid--3{grid-template-columns:repeat(3,1fr)}
}
.flow > * + *{margin-top:1em}
.mt-0{margin-top:0}.mt-1{margin-top:1rem}.mt-2{margin-top:2rem}.mt-3{margin-top:3rem}
.mb-0{margin-bottom:0}

/* ===== Header ===== */
.site-header{position:sticky;top:0;z-index:100;background:rgba(243,233,218,.9);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.site-header__inner{max-width:var(--maxw);margin-inline:auto;padding:.7rem var(--gutter);display:flex;align-items:center;gap:1.2rem}
.logo{display:flex;align-items:center;gap:.5rem;color:var(--petrol-dark)}
.logo__mark{width:34px;height:28px}
.logo__word{width:150px}
.logo__word svg{width:100%;height:auto;display:block}

.nav{display:flex;align-items:center;gap:1.3rem;margin-left:auto}
.nav__link{font-weight:600;color:var(--petrol-dark);position:relative;padding:.3em 0}
.nav__link::after{content:"";position:absolute;left:0;right:100%;bottom:-2px;height:2px;background:var(--apricot);transition:right .25s ease}
.nav__link:hover::after,.nav__link.is-active::after{right:0}
.nav__link.is-active{color:var(--apricot-dark)}
.nav__link--cart{display:flex;align-items:center;gap:.35em}
.cart-badge{display:inline-flex;align-items:center;justify-content:center;min-width:1.5em;height:1.5em;padding:0 .3em;border-radius:999px;background:var(--apricot);color:var(--petrol-dark);font-size:.75rem;font-weight:700}
.cart-badge.is-empty{background:var(--line);color:var(--petrol-dark)}
.cart-badge.bump{animation:bump .4s ease}
@keyframes bump{0%{transform:scale(1)}40%{transform:scale(1.4)}100%{transform:scale(1)}}

.nav-toggle{display:none;background:none;border:0;color:var(--petrol-dark);cursor:pointer;padding:.4rem}
.nav-toggle__icon-close{display:none}

@media (max-width:840px){
  .nav-toggle{display:inline-flex}
  .nav{
    position:fixed;inset:0 0 0 auto;width:min(78vw,320px);height:100vh;
    background:var(--frost);flex-direction:column;align-items:flex-start;
    padding:5.5rem 1.6rem 2rem;gap:1.4rem;
    transform:translateX(100%);visibility:hidden;transition:transform .3s ease;
    box-shadow:var(--shadow);
  }
  .nav.is-open{transform:translateX(0);visibility:visible}
  body.nav-open .nav-toggle__icon-open{display:none}
  body.nav-open .nav-toggle__icon-close{display:inline-flex}
}

/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5em;padding:.8em 1.6em;border-radius:999px;font-weight:700;border:2px solid transparent;cursor:pointer;position:relative;overflow:hidden;isolation:isolate;transition:color .25s ease,border-color .25s ease}
.btn--primary{background:var(--petrol);color:var(--beige)}
.btn--primary::before{content:"";position:absolute;inset:0;left:-100%;width:100%;background:var(--apricot);z-index:-1;transition:left .3s ease}
.btn--primary:hover::before{left:0}
.btn--primary:hover{color:var(--petrol-dark)}
.btn--light{background:var(--beige);color:var(--petrol-dark)}
.btn--ghost{background:transparent;border-color:var(--beige);color:var(--beige)}
.btn--ghost:hover{background:rgba(243,233,218,.15)}
.btn--outline{background:transparent;border-color:var(--petrol);color:var(--petrol)}
.btn--sweep{background:var(--apricot);color:var(--petrol-dark)}
.btn--sweep::before{content:"";position:absolute;inset:0;left:-100%;width:100%;background:var(--petrol);z-index:-1;transition:left .3s ease}
.btn--sweep:hover::before{left:0}
.btn--sweep:hover{color:var(--beige)}
.btn--block{width:100%}
.btn--sm{padding:.5em 1.1em;font-size:.9rem}
.btn[disabled]{opacity:.6;cursor:progress}

/* ===== Hero / poster frame ===== */
.hero{position:relative;padding-block:clamp(2rem,6vw,4rem)}
.hero__frame{
  max-width:var(--maxw);margin-inline:auto;padding:clamp(1rem,3vw,2.2rem);
  border:10px solid var(--petrol);border-radius:var(--radius-lg);
  background:var(--beige);position:relative;overflow:hidden;
}
.hero__grid{display:grid;gap:2rem;align-items:center}
@media (min-width:860px){.hero__grid{grid-template-columns:1.1fr 1fr}}
.hero__title{font-size:clamp(2.4rem,6.5vw,4.4rem);letter-spacing:-.01em}
.hero__title u{text-decoration:none;position:relative;font-style:normal}
.hero__title .sweep{position:relative;white-space:nowrap}
.hero__title .sweep::after{
  content:"";position:absolute;left:0;bottom:.05em;width:100%;height:.22em;
  background:var(--apricot);transform:scaleX(0);transform-origin:left;
  animation:sweepline 1s .4s ease forwards;z-index:-1;
}
@keyframes sweepline{to{transform:scaleX(1)}}
.hero__lede{font-size:1.15rem;max-width:34ch}
.hero__art{position:relative;aspect-ratio:4/3;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.hero__art img{width:100%;height:100%;object-fit:cover}
.hero__badge{position:absolute;right:-10px;top:-10px;width:92px;height:92px}
.hero__snow{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;opacity:.5}

/* ===== Section dividers / decorative svg ===== */
.divider{display:block;width:100%;height:32px;color:var(--petrol)}
.site-footer__divider{display:block;width:100%;height:28px;color:var(--petrol)}

/* ===== Reveal animation ===== */
.reveal{opacity:0;transform:translateY(28px);clip-path:inset(12% 0 0 0);transition:opacity .7s ease, transform .7s ease, clip-path .7s ease}
.reveal.in-view{opacity:1;transform:translateY(0);clip-path:inset(0 0 0 0)}
.reveal--stagger > *{opacity:0;transform:translateY(24px);transition:opacity .6s ease, transform .6s ease}
.reveal--stagger.in-view > *{opacity:1;transform:translateY(0)}
.reveal--stagger.in-view > *:nth-child(1){transition-delay:.05s}
.reveal--stagger.in-view > *:nth-child(2){transition-delay:.15s}
.reveal--stagger.in-view > *:nth-child(3){transition-delay:.25s}
.reveal--stagger.in-view > *:nth-child(4){transition-delay:.35s}
.reveal--stagger.in-view > *:nth-child(5){transition-delay:.45s}
.reveal--stagger.in-view > *:nth-child(6){transition-delay:.55s}

/* ===== Cards / products ===== */
.card{
  background:var(--frost);border-radius:var(--radius);overflow:hidden;
  box-shadow:0 6px 18px -10px rgba(11,59,74,.3);
  transition:transform .3s ease, box-shadow .3s ease;
}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.card__media{aspect-ratio:4/3;overflow:hidden;background:var(--line)}
.card__media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.card:hover .card__media img{transform:scale(1.08)}
.card__body{padding:1.1rem 1.2rem 1.4rem}
.card__price{font-weight:700;color:var(--apricot-dark)}

.product-strip{display:flex;gap:1.2rem;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:.5rem}
.product-strip .card{min-width:260px;scroll-snap-align:start}
@media (min-width:860px){
  .product-strip{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));overflow:visible}
}

/* ===== Feature: Rádce na trasu ===== */
.advisor{
  background:var(--petrol);color:var(--beige);border-radius:var(--radius-lg);
  padding:clamp(1.5rem,4vw,3rem);position:relative;overflow:hidden;
}
.advisor__grid{display:grid;gap:1.6rem}
@media (min-width:760px){.advisor__grid{grid-template-columns:1fr 1fr}}
.advisor select,.advisor input[type="range"]{width:100%}
.advisor__result{background:rgba(243,233,218,.08);border:1px solid rgba(243,233,218,.3);border-radius:var(--radius);padding:1.2rem}
.advisor__result dl{display:grid;grid-template-columns:auto 1fr;gap:.3em 1em;margin:0}
.advisor__result dt{color:var(--apricot);font-weight:700}
.advisor__result dd{margin:0}

/* ===== Forms ===== */
.form-grid{display:grid;gap:1.1rem}
@media (min-width:640px){.form-grid--2{grid-template-columns:1fr 1fr}}
.field{display:flex;flex-direction:column;gap:.35em}
.field label{font-weight:600;font-size:.92rem}
.field input,.field select,.field textarea{
  padding:.7em .9em;border:1.5px solid var(--line);border-radius:10px;background:var(--frost);
  font:inherit;accent-color:var(--petrol);
}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--petrol)}
.field textarea{resize:vertical;min-height:7em}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:#c23b3b}
.field-error{color:#c23b3b;font-size:.85rem;margin:0}
.form-success{color:#176b3a;font-weight:700;margin-top:1em}
.form-fail{margin-top:1em}
.hp-field{position:absolute !important;left:-9999px;width:1px;height:1px;opacity:0}

/* ===== Inner-page components ===== */
.page-hero{background:var(--petrol);color:var(--beige);padding-block:clamp(2.5rem,6vw,4rem)}
.page-hero h1{color:var(--beige)}
.page-hero .breadcrumbs{color:rgba(243,233,218,.75)}

.breadcrumbs{display:flex;gap:.4em;flex-wrap:wrap;font-size:.9rem}
.breadcrumbs a{color:inherit;text-decoration:underline}

.prose{max-width:68ch;margin-inline:auto}
.prose h2{margin-top:1.6em}
.prose ul,.prose ol{margin:1em 0 1em 1.3em}
.prose li{margin-bottom:.4em}

.legal-toc{background:var(--frost);border:1px solid var(--line);border-radius:var(--radius);padding:1.2rem 1.4rem;max-width:68ch;margin:0 auto 2rem}
.legal-toc h2{font-size:1.1rem;margin-top:0}
.legal-toc ol{margin-left:1.2rem}

.notice{border-radius:var(--radius);padding:1rem 1.2rem;border:1.5px solid var(--line);background:var(--frost)}
.notice--info{border-color:#8bbccb;background:#eaf6fa}
.notice--warn{border-color:var(--apricot);background:#fff4e6}

.faq-item{border-bottom:1px solid var(--line);padding:1em 0}
.faq-item summary{font-weight:700;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:1em}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:1.4rem;color:var(--apricot-dark)}
.faq-item[open] summary::after{content:"–"}
.faq-item p{margin-top:.6em}

.product-detail{display:grid;gap:2rem}
@media (min-width:860px){.product-detail{grid-template-columns:1fr 1fr}}
.product-detail__gallery{border-radius:var(--radius);overflow:hidden;aspect-ratio:4/3}
.product-detail__specs{width:100%;border-collapse:collapse;margin:1em 0}
.product-detail__specs th,.product-detail__specs td{text-align:left;padding:.5em .3em;border-bottom:1px solid var(--line)}

.cart-table{width:100%;border-collapse:collapse}
.cart-table th,.cart-table td{padding:.8em .5em;border-bottom:1px solid var(--line);text-align:left;vertical-align:middle}
.cart-table img{width:64px;height:64px;object-fit:cover;border-radius:8px}
.cart-summary{background:var(--frost);border-radius:var(--radius);padding:1.4rem;max-width:380px;margin-left:auto;box-shadow:0 6px 18px -10px rgba(11,59,74,.25)}
.cart-summary dl{display:flex;justify-content:space-between;margin:.4em 0}

.contact-layout{display:grid;gap:2rem}
@media (min-width:860px){.contact-layout{grid-template-columns:1fr 1fr}}
.contact-info li{display:flex;gap:.6em;align-items:flex-start;margin-bottom:.8em}

/* ===== Cookie banner ===== */
.cookie-banner{
  position:fixed;left:1rem;right:1rem;bottom:1rem;z-index:300;
  background:var(--petrol-dark);color:var(--beige);border-radius:var(--radius);
  padding:1rem 1.3rem;display:flex;gap:1rem;flex-wrap:wrap;align-items:center;justify-content:space-between;
  box-shadow:var(--shadow);max-width:720px;margin-inline:auto;
}
.cookie-banner a{color:var(--apricot);text-decoration:underline}
.cookie-banner__actions{display:flex;gap:.6em;flex-wrap:wrap}

/* ===== Footer ===== */
.site-footer{background:var(--petrol-dark);color:var(--beige);margin-top:4rem}
.site-footer__inner{max-width:var(--maxw);margin-inline:auto;padding:1rem var(--gutter) 2rem;display:grid;gap:2rem;grid-template-columns:1fr}
@media (min-width:760px){.site-footer__inner{grid-template-columns:1.3fr 1fr 1fr 1.2fr}}
.footer-col h2{color:var(--beige);font-size:1rem;font-family:var(--font-body);text-transform:uppercase;letter-spacing:.06em}
.footer-col a{display:block;color:rgba(243,233,218,.85);padding:.25em 0}
.footer-col a:hover{color:var(--apricot)}
.footer-col--newsletter .newsletter-form{display:flex;gap:.5em;flex-wrap:wrap}
.footer-col--newsletter input[type=email]{flex:1;min-width:0;padding:.6em .8em;border-radius:8px;border:1px solid rgba(243,233,218,.4);background:rgba(255,255,255,.08);color:var(--beige)}
.footer-col--newsletter input[type=email]::placeholder{color:rgba(243,233,218,.6)}
.site-footer__bottom{text-align:center;padding:1rem;border-top:1px solid rgba(243,233,218,.15);font-size:.85rem;opacity:.85}

/* grain texture overlay utility */
.grain{position:relative}
.grain::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.05;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* COMPONENTS:
.wrap - max-width centered content container
.section - vertical page section spacing
.grid / .grid--2 / .grid--3 / .grid--cards - responsive grid layouts
.flow - adds vertical spacing between direct children
.site-header / .nav / .nav__link / .cart-badge - header & navigation
.nav-toggle - mobile menu button
.btn / .btn--primary / .btn--light / .btn--ghost / .btn--outline / .btn--sweep / .btn--block / .btn--sm - button variants
.hero / .hero__frame / .hero__grid / .hero__title / .sweep / .hero__lede / .hero__art / .hero__badge / .hero__snow - home hero poster composition
.divider / .site-footer__divider - decorative SVG section dividers
.reveal / .reveal--stagger / .in-view - scroll reveal animation hooks
.card / .card__media / .card__body / .card__price - product/service card
.product-strip - horizontal scroll-snap strip on mobile, grid on desktop
.advisor / .advisor__grid / .advisor__result - signature "Rádce na trasu" feature block
.form-grid / .form-grid--2 / .field / .field-error / .form-success / .form-fail / .hp-field - form system
.page-hero - inner page header band
.breadcrumbs - breadcrumb trail
.prose - readable long-form legal/content text column
.legal-toc - table of contents box for legal pages
.notice / .notice--info / .notice--warn - callout boxes
.faq-item - details/summary FAQ row
.product-detail / .product-detail__gallery / .product-detail__specs - product page layout
.cart-table / .cart-summary - cart/checkout page
.contact-layout / .contact-info - contact page layout
.cookie-banner / .cookie-banner__actions - cookie consent banner
.site-footer / .footer-col - footer layout
.grain - SVG noise texture overlay
.sr-only / .skip-link - accessibility helpers
*/