/* ===== Stavebnice Kostka — styles ===== */
:root{
  --sky:#4FA9D6;
  --sky-deep:#2C7DA8;
  --sky-light:#DDEFF9;
  --sun:#F3C332;
  --sun-light:#FBE9AE;
  --paper:#FFFBF2;
  --white:#FFFFFF;
  --ink:#213040;
  --ink-soft:#56646F;
  --coral:#EC7452;
  --line:#CFE6F1;
  --radius:22px;
  --radius-sm:12px;
  --scallop:26px;
  --shadow:0 18px 40px -20px rgba(33,48,64,.35);
  --font-display:"Iowan Old Style","Palatino Linotype",Georgia,"Times New Roman",serif;
  --font-body:"Segoe UI",system-ui,-apple-system,Roboto,Helvetica,Arial,sans-serif;
  --font-mono:"Cascadia Mono","Consolas",ui-monospace,monospace;
}
*,*::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(--paper);
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:var(--font-display);line-height:1.1;margin:0 0 .5em;font-weight:700}
h1{font-size:clamp(2.4rem,6vw,4.6rem)}
h2{font-size:clamp(1.8rem,4vw,2.8rem)}
h3{font-size:clamp(1.25rem,2.4vw,1.6rem)}
p{margin:0 0 1em}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:3px solid var(--coral);outline-offset:3px;border-radius:4px}
.container{width:min(1180px,92vw);margin-inline:auto}
.visually-hidden{position:absolute !important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
section{position:relative}
.section{padding:5rem 0}
.section--tight{padding:3rem 0}
.eyebrow{
  font-family:var(--font-mono);
  text-transform:uppercase;
  letter-spacing:.14em;
  font-size:.78rem;
  color:var(--sky-deep);
  display:inline-flex;align-items:center;gap:.5em;
  margin-bottom:.8em;
}

/* ===== buttons ===== */
.btn{
  position:relative;
  display:inline-flex;align-items:center;justify-content:center;gap:.55em;
  padding:.85em 1.6em;
  border-radius:999px;
  border:2px solid var(--ink);
  background:var(--sun);
  color:var(--ink);
  font-weight:700;
  font-size:.98rem;
  cursor:pointer;
  overflow:hidden;
  isolation:isolate;
  min-height:44px;
  transition:color .35s ease, border-color .25s ease, transform .15s ease;
}
.btn::before{
  content:"";
  position:absolute;inset:0;width:100%;left:-100%;
  background:var(--ink);
  z-index:-1;
  transition:left .35s ease;
}
.btn:hover::before,.btn:focus-visible::before{left:0}
.btn:hover,.btn:focus-visible{color:var(--paper)}
.btn:active{transform:translateY(1px)}
.btn--ghost{background:transparent;border-color:var(--white);color:var(--white)}
.btn--ghost::before{background:var(--white)}
.btn--ghost:hover,.btn--ghost:focus-visible{color:var(--ink)}
.btn--outline{background:transparent;border-color:var(--ink)}
.btn--sm{padding:.55em 1.1em;font-size:.86rem}
.btn--block{width:100%}
.btn[disabled]{opacity:.55;cursor:not-allowed}

/* ===== header ===== */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,251,242,.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.site-header__bar{
  display:flex;align-items:center;justify-content:space-between;
  padding:.9rem 0;
  gap:1.2rem;
}
.logo{display:flex;align-items:center;gap:.6rem;font-family:var(--font-display);font-weight:700;font-size:1.25rem;color:var(--ink)}
.logo__mark{width:40px;height:40px;flex:none}
.logo__word strong{color:var(--sky-deep)}
.main-nav{display:flex;align-items:center;gap:1.6rem}
.main-nav a{font-weight:600;font-size:.96rem;position:relative;padding:.2em 0}
.main-nav a::after{content:"";position:absolute;left:0;bottom:-3px;width:0;height:2px;background:var(--coral);transition:width .25s ease}
.main-nav a:hover::after,.main-nav a[aria-current="page"]::after{width:100%}
.header-actions{display:flex;align-items:center;gap:.9rem}
.cart-link{display:flex;align-items:center;gap:.45em;font-weight:700;border:2px solid var(--ink);padding:.5em 1em;border-radius:999px;min-height:44px}
.cart-link__count{background:var(--coral);color:var(--white);border-radius:999px;min-width:1.6em;height:1.6em;display:inline-flex;align-items:center;justify-content:center;font-size:.8rem;transition:transform .3s ease}
.cart-link__count.bump{animation:bump .4s ease}
@keyframes bump{0%{transform:scale(1)}40%{transform:scale(1.5)}100%{transform:scale(1)}}
.nav-toggle{display:none;background:none;border:2px solid var(--ink);border-radius:10px;padding:.4em;min-width:44px;min-height:44px;align-items:center;justify-content:center}
.nav-toggle svg{width:22px;height:22px}

@media (max-width:860px){
  .main-nav{
    position:fixed;inset:0 0 0 auto;top:0;
    width:min(78vw,320px);height:100vh;
    background:var(--white);
    flex-direction:column;align-items:flex-start;
    padding:6rem 2rem 2rem;
    gap:1.4rem;
    transform:translateX(100%);
    visibility:hidden;
    transition:transform .35s ease, visibility .35s ease;
    box-shadow:-10px 0 30px -20px rgba(0,0,0,.4);
  }
  .main-nav.is-open{transform:translateX(0);visibility:visible}
  .nav-toggle{display:flex}
}

/* ===== footer ===== */
.site-footer{background:var(--ink);color:var(--sky-light);padding-top:4rem;position:relative}
.site-footer a{color:var(--sky-light)}
.site-footer a:hover{color:var(--sun)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:2.4rem;padding-bottom:3rem}
.footer-col h4{color:var(--white);font-family:var(--font-body);font-size:.85rem;text-transform:uppercase;letter-spacing:.1em;margin-bottom:1em}
.footer-col li{margin-bottom:.6em;font-size:.94rem}
.footer-newsletter input{width:100%}
.footer-bottom{border-top:1px solid rgba(255,255,255,.15);padding:1.4rem 0 2rem;display:flex;justify-content:space-between;flex-wrap:wrap;gap:1em;font-size:.85rem;color:#B9D3DF}
@media (max-width:760px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (max-width:480px){.footer-grid{grid-template-columns:1fr}}

/* ===== scallop + gingham + grain utilities ===== */
.scallop-bottom{position:relative}
.scallop-bottom::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:calc(var(--scallop)/2);
  background-image:radial-gradient(circle at calc(var(--scallop)/2) 0, transparent calc(var(--scallop)/2 - 1px), var(--scallop-color,var(--paper)) calc(var(--scallop)/2));
  background-size:var(--scallop) 100%;
  background-repeat:repeat-x;
}
.scallop-top{position:relative}
.scallop-top::before{
  content:"";position:absolute;left:0;right:0;top:-1px;height:calc(var(--scallop)/2);
  background-image:radial-gradient(circle at calc(var(--scallop)/2) 100%, transparent calc(var(--scallop)/2 - 1px), var(--scallop-color,var(--paper)) calc(var(--scallop)/2));
  background-size:var(--scallop) 100%;
  background-repeat:repeat-x;
}
.gingham{
  background-color:var(--sky-light);
  background-image:
    repeating-linear-gradient(0deg, rgba(44,125,168,.16) 0 9px, transparent 9px 20px),
    repeating-linear-gradient(90deg, rgba(44,125,168,.16) 0 9px, transparent 9px 20px);
}
.grain-overlay{position:absolute;inset:0;width:100%;height:100%;opacity:.5;pointer-events:none;mix-blend-mode:multiply}

.sprig{position:absolute;pointer-events:none;opacity:.9}

/* ===== reveal animation ===== */
.reveal{transition:opacity .7s ease, transform .7s ease, clip-path .7s ease}
.reveal.js-hidden{opacity:0;transform:translateY(26px)}
.reveal.in-view{opacity:1;transform:none}
.reveal-1.in-view{transition-delay:.05s}
.reveal-2.in-view{transition-delay:.15s}
.reveal-3.in-view{transition-delay:.25s}
.reveal-4.in-view{transition-delay:.35s}

/* ===== hero ===== */
.hero{
  background:linear-gradient(180deg,var(--sky-light) 0%, var(--paper) 85%);
  padding:3.4rem 0 6rem;
  --scallop-color:var(--paper);
}
.hero__grid{display:grid;grid-template-columns:1.05fr .95fr;gap:3rem;align-items:center}
.hero__tabs{display:flex;gap:.6rem;margin-bottom:1.4rem;flex-wrap:wrap}
.hero__tab{
  border:2px solid var(--ink);background:var(--white);border-radius:999px;
  padding:.5em 1.1em;font-weight:700;font-size:.88rem;cursor:pointer;min-height:44px;
}
.hero__tab[aria-selected="true"]{background:var(--ink);color:var(--paper)}
.hero__panel{display:none}
.hero__panel.is-active{display:block}
.hero__lede{font-size:1.1rem;color:var(--ink-soft);max-width:34em}
.hero__cta{display:flex;gap:1rem;margin-top:1.6rem;flex-wrap:wrap}
.hero__art{position:relative;aspect-ratio:1/1;max-width:440px;margin-inline:auto}
.hero__art svg{width:100%;height:100%}
.hero__piece{transform-origin:center;animation:assemble .9s cubic-bezier(.2,.8,.2,1) both}
.hero__piece:nth-child(1){animation-delay:.05s}
.hero__piece:nth-child(2){animation-delay:.15s}
.hero__piece:nth-child(3){animation-delay:.25s}
.hero__piece:nth-child(4){animation-delay:.35s}
.hero__piece:nth-child(5){animation-delay:.45s}
.hero__piece:nth-child(6){animation-delay:.52s}
@keyframes assemble{
  0%{opacity:0;transform:translate(var(--fx,-60px),var(--fy,-40px)) rotate(var(--fr,-25deg)) scale(.6)}
  100%{opacity:1;transform:translate(0,0) rotate(0) scale(1)}
}
.continuous-float{animation:floaty 6s ease-in-out infinite}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}

/* ===== icon ===== */
.icon{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.8}

/* ===== benefit strip ===== */
.benefits{display:grid;grid-template-columns:repeat(4,1fr);gap:1.6rem}
.benefit{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-sm);padding:1.4rem;display:flex;gap:.9rem;align-items:flex-start}
.benefit .icon{color:var(--sky-deep);flex:none;margin-top:.1em}
.benefit h3{font-size:1.02rem;margin-bottom:.2em;font-family:var(--font-body)}
.benefit p{margin:0;font-size:.9rem;color:var(--ink-soft)}
@media (max-width:900px){.benefits{grid-template-columns:1fr 1fr}}
@media (max-width:540px){.benefits{grid-template-columns:1fr}}

/* ===== planner (signature feature) ===== */
.planner{background:var(--ink);color:var(--sky-light);border-radius:var(--radius);padding:2.6rem;position:relative;overflow:hidden}
.planner::before{content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;background:var(--sun);opacity:.15;border-radius:40%;transform:rotate(20deg)}
.planner h2{color:var(--white)}
.planner__form{display:grid;grid-template-columns:repeat(3,1fr) auto;gap:1rem;align-items:end;margin-top:1.6rem}
.planner__field{display:flex;flex-direction:column;gap:.4em}
.planner__field label{font-size:.82rem;color:#B9D3DF}
.planner__field select,.planner__field input{
  padding:.6em .7em;border-radius:var(--radius-sm);border:2px solid #395368;background:#17222C;color:var(--white);font-size:.95rem;min-height:44px;
}
.planner__result{margin-top:2rem;background:rgba(255,255,255,.06);border-radius:var(--radius-sm);padding:1.4rem;display:none}
.planner__result.is-visible{display:block}
.planner__result-sets{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:1rem;margin:1rem 0}
.planner__set{background:rgba(255,255,255,.07);border-radius:var(--radius-sm);padding:1rem}
.planner__set strong{display:block;color:var(--white)}
.planner__totals{display:flex;gap:1.6rem;flex-wrap:wrap;font-family:var(--font-mono);font-size:.95rem}
.planner__totals b{color:var(--sun);font-size:1.1rem}
@media (max-width:760px){.planner__form{grid-template-columns:1fr;padding-bottom:7rem}}

/* ===== product grid / strip ===== */
.product-strip,.product-grid{display:grid;gap:1.6rem;grid-template-columns:repeat(4,1fr)}
.product-grid--catalog{grid-template-columns:repeat(4,1fr)}
@media (max-width:1040px){.product-strip,.product-grid--catalog{grid-template-columns:repeat(2,1fr)}}
@media (max-width:620px){
  .product-grid--catalog{grid-template-columns:1fr}
  .product-strip{
    grid-template-columns:none;
    grid-auto-flow:column;
    grid-auto-columns:72vw;
    overflow-x:auto;
    scroll-snap-type:x mandatory;
    padding-bottom:.6rem;
  }
  .product-strip .card{scroll-snap-align:start}
}
.card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-sm);
  overflow:hidden;display:flex;flex-direction:column;
  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;position:relative}
.card__media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.card:hover .card__media img{transform:scale(1.07)}
.card__tag{position:absolute;top:.7em;left:.7em;background:var(--sun);border:2px solid var(--ink);font-family:var(--font-mono);font-size:.72rem;padding:.2em .6em;border-radius:999px}
.card__body{padding:1.1rem;display:flex;flex-direction:column;gap:.5rem;flex:1}
.card__meta{display:flex;gap:.8em;flex-wrap:wrap;font-size:.78rem;color:var(--ink-soft);font-family:var(--font-mono)}
.card__price{font-weight:700;font-size:1.15rem;margin-top:auto}
.card__actions{display:flex;gap:.6rem;margin-top:.4rem}

/* ===== catalog filters ===== */
.filters{display:flex;gap:.8rem;flex-wrap:wrap;margin-bottom:2rem}
.filters button{
  border:2px solid var(--ink);background:var(--white);border-radius:999px;padding:.5em 1.1em;font-weight:700;font-size:.86rem;min-height:44px;cursor:pointer;
}
.filters button[aria-pressed="true"]{background:var(--sky);color:var(--white)}

/* ===== product detail ===== */
.product-detail{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:start}
.product-detail__media{border-radius:var(--radius);overflow:hidden;position:relative}
.product-detail__media img{aspect-ratio:4/3;object-fit:cover;width:100%}
.product-detail__meta{display:flex;gap:1.2rem;flex-wrap:wrap;font-family:var(--font-mono);font-size:.85rem;color:var(--ink-soft);margin:1rem 0}
.qty-row{display:flex;align-items:center;gap:1rem;margin:1.4rem 0}
.qty{display:inline-flex;align-items:center;border:2px solid var(--ink);border-radius:999px;overflow:hidden}
.qty button{width:40px;height:40px;background:var(--white);border:none;font-size:1.1rem;cursor:pointer}
.qty input{width:48px;border:none;text-align:center;font-weight:700;font-size:1rem}
@media (max-width:860px){.product-detail{grid-template-columns:1fr}}

/* ===== cart / checkout ===== */
.cart-table{width:100%;border-collapse:collapse;margin-bottom:2rem}
.cart-table th{text-align:left;font-family:var(--font-mono);font-size:.78rem;text-transform:uppercase;letter-spacing:.06em;color:var(--ink-soft);padding-bottom:.6em;border-bottom:1px solid var(--line)}
.cart-table td{padding:1em 0;border-bottom:1px solid var(--line);vertical-align:middle}
.cart-item{display:flex;gap:1rem;align-items:center}
.cart-item img{width:72px;height:72px;object-fit:cover;border-radius:10px}
.cart-remove{background:none;border:none;color:var(--coral);font-weight:700;cursor:pointer;font-size:.85rem}
.cart-summary{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-sm);padding:1.6rem;max-width:380px}
.cart-summary__row{display:flex;justify-content:space-between;margin-bottom:.6em}
.cart-summary__total{font-weight:700;font-size:1.2rem;border-top:1px solid var(--line);padding-top:.7em;margin-top:.5em}
.checkout-grid{display:grid;grid-template-columns:1.3fr 1fr;gap:2.4rem;align-items:start}
@media (max-width:900px){.checkout-grid{grid-template-columns:1fr}}
.empty-cart{text-align:center;padding:4rem 1rem}

/* ===== forms ===== */
.field{display:flex;flex-direction:column;gap:.4em;margin-bottom:1.1em}
.field label{font-size:.88rem;font-weight:600}
.field input,.field textarea,.field select{
  padding:.7em .8em;border-radius:var(--radius-sm);border:2px solid var(--line);
  background:var(--white);font-size:.98rem;font-family:inherit;min-height:44px;accent-color:var(--sky-deep);
}
.field textarea{min-height:120px;resize:vertical}
.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--sky-deep)}
.field--error input,.field--error textarea{border-color:var(--coral)}
.field__error{color:var(--coral);font-size:.82rem;display:none}
.field--error .field__error{display:block}
.field--check{flex-direction:row;align-items:flex-start;gap:.6em}
.field--check input{width:20px;height:20px;flex:none;margin-top:.15em}
.form-note{font-size:.85rem;color:var(--ink-soft)}
.form-success,.form-error{padding:1em 1.2em;border-radius:var(--radius-sm);margin-bottom:1.2em;display:none}
.form-success{background:#E4F5E6;color:#245B33}
.form-error{background:#FBE3DC;color:#9A3420}
.is-visible{display:block}
.hp-field{position:absolute;left:-9999px;top:-9999px;width:1px;height:1px;opacity:0}

/* ===== cookie banner ===== */
.cookie-banner{
  position:fixed;left:1rem;right:1rem;bottom:1rem;z-index:100;max-width:560px;
  background:var(--ink);color:var(--sky-light);border-radius:var(--radius-sm);padding:1.4rem;
  box-shadow:var(--shadow);
  transform:translateY(130%);transition:transform .4s ease;
}
.cookie-banner.is-visible{transform:translateY(0)}
.cookie-banner p{font-size:.9rem;margin-bottom:1em}
.cookie-banner a{text-decoration:underline}
.cookie-banner__actions{display:flex;gap:.8rem;flex-wrap:wrap}

/* ===== legal / content pages ===== */
.content-page{max-width:760px;margin-inline:auto;padding:4rem 0 6rem}
.content-page h2{margin-top:1.6em}
.content-page li{margin-bottom:.4em;padding-left:1.2em;position:relative}
.content-page li::before{content:"";position:absolute;left:0;top:.55em;width:6px;height:6px;background:var(--sun);border-radius:2px}
.page-hero{padding:3.2rem 0 2rem}
.page-hero .eyebrow{display:block}

/* ===== faq ===== */
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{padding:1.1em 0;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[open] summary{color:var(--sky-deep)}
.faq-item p{padding-bottom:1.1em;color:var(--ink-soft)}

/* ===== 404 ===== */
.not-found{min-height:60vh;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:4rem 1rem}

/* ===== about ===== */
.about-hero{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:center}
.about-hero img{border-radius:var(--radius);aspect-ratio:4/3;object-fit:cover}
@media (max-width:860px){.about-hero{grid-template-columns:1fr}}
.timeline{display:grid;gap:1.4rem}
.timeline li{display:grid;grid-template-columns:90px 1fr;gap:1rem}
.timeline b{font-family:var(--font-mono);color:var(--sky-deep)}

/* responsive hero */
@media (max-width:900px){
  .hero__grid{grid-template-columns:1fr;text-align:left}
  .hero__art{max-width:300px}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  .continuous-float{animation:none}
  .hero__piece{animation:none;opacity:1;transform:none}
}