/* Papiernictvo Domov — Constructivist poster design system */
:root{
  --aubergine:#3b1f33;
  --aubergine-2:#2a1524;
  --lime:#c6ff3d;
  --lime-deep:#9fd923;
  --ivory:#f4efe3;
  --ivory-2:#eae2cf;
  --ink:#1c1016;
  --red:#c7341f;
  --font-display:"Impact","Arial Narrow",Haettenschweiler,"Franklin Gothic Bold",sans-serif;
  --font-sans:-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --font-mono:"Consolas","SFMono-Regular",Menlo,monospace;
  --radius:2px;
  --shadow-paper:0 10px 30px -10px rgba(28,16,22,.5);
  --maxw:1180px;
}
*{box-sizing:border-box}
html,body{overflow-x:clip}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font-sans);color:var(--ink);background:var(--ivory);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);text-transform:uppercase;letter-spacing:.01em;line-height:1.05;margin:0 0 .5em}
p{margin:0 0 1em}
ul{margin:0;padding:0}
button{font-family:inherit}
:focus-visible{outline:3px solid var(--red);outline-offset:3px}
.skip-link{position:absolute;left:-999px;top:0;background:var(--ivory);color:var(--ink);padding:.5em 1em;z-index:200}
.skip-link:focus{left:8px;top:8px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
@media (prefers-reduced-motion:reduce){*{animation-duration:.01ms !important;transition-duration:.01ms !important;scroll-behavior:auto !important}}

/* ===== LAYOUT UTILITIES ===== */
.wrap{max-width:var(--maxw);margin-inline:auto;padding-inline:1.25rem}
.grid{display:grid;gap:1.5rem}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.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:560px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}
.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}.mb-1{margin-bottom:1rem}.mb-2{margin-bottom:2rem}.mb-3{margin-bottom:3rem}
.section{padding-block:clamp(3rem,6vw,6rem)}
.section-tight{padding-block:clamp(1.5rem,3vw,3rem)}
.text-center{text-align:center}
.flex{display:flex;gap:1rem}
.flex-wrap{flex-wrap:wrap}
.flex-between{display:flex;justify-content:space-between;align-items:center}

/* ===== REVEAL ===== */
.reveal{opacity:1;transform:none}
.reveal.js-armed{opacity:0;transform:translateY(24px)}
.reveal.js-armed.in-view{opacity:1;transform:none;transition:opacity .7s ease,transform .7s ease}
.reveal-d1.js-armed.in-view{transition-delay:.08s}
.reveal-d2.js-armed.in-view{transition-delay:.16s}
.reveal-d3.js-armed.in-view{transition-delay:.24s}

/* ===== HEADER ===== */
.site-header{position:sticky;top:0;z-index:100;background:var(--aubergine);color:var(--ivory);border-bottom:3px solid var(--lime)}
.header-inner{max-width:var(--maxw);margin-inline:auto;padding:.7rem 1.25rem;display:flex;align-items:center;justify-content:space-between;gap:1rem}
.logo{display:flex;align-items:center;gap:.6rem;color:var(--ivory)}
.logo-mark{color:var(--lime);flex-shrink:0}
.logo-word{font-family:var(--font-display);text-transform:uppercase;font-size:1.05rem;line-height:1.1;letter-spacing:.02em}
.logo-word strong{color:var(--lime)}
.main-nav{display:flex;align-items:center}
.nav-list{display:flex;align-items:center;gap:1.4rem;list-style:none}
.nav-list a{font-weight:600;font-size:.95rem;text-transform:uppercase;letter-spacing:.03em;position:relative;padding:.3rem 0}
.nav-list a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--lime);transition:width .25s ease}
.nav-list a:hover::after,.nav-list a.is-active::after{width:100%}
.nav-cart a{display:flex;align-items:center;gap:.3rem}
.cart-count{background:var(--lime);color:var(--aubergine-2);border-radius:50%;min-width:1.4em;height:1.4em;display:inline-flex;align-items:center;justify-content:center;font-size:.75rem;font-weight:700}
.cart-count.bump{animation:bump .35s ease}
@keyframes bump{0%{transform:scale(1)}40%{transform:scale(1.5)}100%{transform:scale(1)}}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;padding:.4rem;cursor:pointer}
.nav-toggle span{width:24px;height:2px;background:var(--ivory)}
@media (max-width:820px){
  .nav-toggle{display:flex}
  .nav-list{position:fixed;top:0;right:0;height:100vh;width:min(78vw,320px);background:var(--aubergine);flex-direction:column;align-items:flex-start;padding:5rem 1.5rem 2rem;gap:1.4rem;
    transform:translateX(100%);visibility:hidden;transition:transform .3s ease,visibility .3s ease;box-shadow:var(--shadow-paper)}
  .nav-list.is-open{transform:translateX(0);visibility:visible}
}

/* ===== BUTTONS ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5em;position:relative;overflow:hidden;
  padding:.75em 1.5em;font-weight:700;text-transform:uppercase;letter-spacing:.04em;font-size:.9rem;
  border:2px solid var(--ink);border-radius:var(--radius);cursor:pointer;background:var(--ivory);color:var(--ink);
  min-height:44px;isolation:isolate;transition:color .3s ease}
.btn::before{content:"";position:absolute;inset:0;left:-100%;width:100%;background:var(--ink);z-index:-1;transition:left .3s ease}
.btn:hover::before{left:0}
.btn:hover{color:var(--ivory)}
.btn-lime{background:var(--lime);border-color:var(--aubergine)}
.btn-lime::before{background:var(--aubergine)}
.btn-lime:hover{color:var(--lime)}
.btn-dark{background:var(--aubergine);color:var(--ivory);border-color:var(--lime)}
.btn-dark::before{background:var(--lime)}
.btn-dark:hover{color:var(--aubergine)}
.btn-ghost{background:transparent;color:var(--ivory);border-color:var(--ivory)}
.btn-ghost::before{background:var(--ivory)}
.btn-ghost:hover{color:var(--ink)}
.btn-block{width:100%}
.btn[disabled]{opacity:.6;cursor:not-allowed}

/* ===== HERO ===== */
.hero{position:relative;background:linear-gradient(135deg,var(--aubergine) 0%,var(--aubergine-2) 60%,var(--ink) 100%);color:var(--ivory);overflow:hidden;padding-block:clamp(3rem,8vw,6rem)}
.hero-grain{position:absolute;inset:0;width:100%;height:100%;opacity:.25;pointer-events:none;mix-blend-mode:overlay}
.hero-inner{position:relative;z-index:2;max-width:var(--maxw);margin-inline:auto;padding-inline:1.25rem;display:grid;grid-template-columns:1.1fr .9fr;gap:2.5rem;align-items:center}
@media (max-width:860px){.hero-inner{grid-template-columns:1fr}}
.hero-title{font-size:clamp(2.6rem,7vw,5.2rem);color:var(--ivory)}
.hero-title em{font-style:normal;color:var(--lime)}
.hero-lede{font-size:1.15rem;max-width:34ch;color:var(--ivory-2)}
.hero-art{position:relative}
.hero-art svg{width:100%;height:auto}
.hero-actions{display:flex;gap:1rem;flex-wrap:wrap;margin-top:1.5rem}

/* ===== PAGE HERO (inner pages) ===== */
.page-hero{background:var(--aubergine);color:var(--ivory);padding-block:clamp(2.2rem,5vw,3.5rem);border-bottom:3px solid var(--lime);position:relative;overflow:hidden}
.page-hero h1{font-size:clamp(2rem,5vw,3.2rem)}
.page-hero p{color:var(--ivory-2);max-width:60ch}
.breadcrumbs{font-size:.85rem;text-transform:uppercase;letter-spacing:.04em;color:var(--lime);margin-bottom:1rem}
.breadcrumbs a{text-decoration:underline;text-decoration-color:transparent;transition:text-decoration-color .2s}
.breadcrumbs a:hover{text-decoration-color:currentColor}

/* ===== PROSE (legal pages) ===== */
.prose{max-width:68ch;margin-inline:auto}
.prose h2{font-size:1.5rem;margin-top:2em;color:var(--aubergine)}
.prose h3{font-size:1.15rem;margin-top:1.5em}
.prose p,.prose li{font-size:1.02rem}
.prose ul,.prose ol{padding-left:1.4em;margin-bottom:1em}
.prose a{text-decoration:underline;color:var(--red)}
.legal-toc{background:var(--ivory-2);border:1px solid var(--aubergine);border-radius:var(--radius);padding:1.2rem 1.5rem;max-width:68ch;margin:0 auto 2rem}
.legal-toc h2{margin-top:0;font-size:1rem}
.legal-toc ol{margin:0;padding-left:1.2em}
.legal-toc a{color:var(--aubergine);font-weight:600}

/* ===== CARDS / PRODUCTS ===== */
.card-stack{position:relative}
.product-card{background:var(--ivory);border:2px solid var(--ink);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-paper);transition:transform .3s ease,box-shadow .3s ease}
.product-card:hover{transform:translateY(-6px) rotate(-.4deg)}
.product-card .product-media{aspect-ratio:4/3;overflow:hidden;background:var(--ivory-2)}
.product-card .product-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.product-card:hover .product-media img{transform:scale(1.08)}
.product-card .product-body{padding:1rem 1.1rem}
.product-card h3{font-size:1.05rem;margin-bottom:.3em}
.product-card .price{font-weight:800;color:var(--red);font-size:1.15rem}
.product-card .category{font-size:.75rem;text-transform:uppercase;letter-spacing:.05em;color:var(--aubergine)}
.product-actions{display:flex;justify-content:space-between;align-items:center;margin-top:.7rem;gap:.5rem}

.strip{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(220px,1fr);gap:1.2rem;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:.5rem}
.strip .product-card{scroll-snap-align:start}
@media (min-width:860px){.strip{grid-auto-flow:row;grid-template-columns:repeat(4,1fr);overflow:visible}}

/* ===== PRODUCT DETAIL ===== */
.product-detail{display:grid;grid-template-columns:1fr 1fr;gap:2.5rem;align-items:start}
@media (max-width:760px){.product-detail{grid-template-columns:1fr}}
.product-detail .media{aspect-ratio:1/1;overflow:hidden;border:3px solid var(--ink);border-radius:var(--radius);background:var(--ivory-2)}
.product-detail .media img{width:100%;height:100%;object-fit:cover}
.product-detail .price-big{font-size:2rem;font-weight:800;color:var(--red)}
.qty-input{display:flex;align-items:center;border:2px solid var(--ink);border-radius:var(--radius);overflow:hidden;width:fit-content}
.qty-input button{width:44px;height:44px;background:var(--ivory-2);border:0;font-size:1.2rem;cursor:pointer}
.qty-input input{width:52px;text-align:center;border:0;border-left:2px solid var(--ink);border-right:2px solid var(--ink);height:44px;font-size:1rem}

/* ===== CART ===== */
.cart-table{width:100%;border-collapse:collapse;margin-bottom:1.5rem}
.cart-table th,.cart-table td{padding:.8rem .6rem;border-bottom:1px solid var(--ivory-2);text-align:left;vertical-align:middle}
.cart-table thead th{text-transform:uppercase;font-size:.78rem;letter-spacing:.04em;color:var(--aubergine)}
.cart-table .cart-item-name{display:flex;align-items:center;gap:.7rem}
.cart-table .cart-item-name img{width:56px;height:56px;object-fit:cover;border-radius:var(--radius)}
.cart-remove{background:none;border:0;color:var(--red);text-decoration:underline;cursor:pointer;font-size:.85rem}
.cart-summary{background:var(--ivory-2);border:2px solid var(--aubergine);border-radius:var(--radius);padding:1.5rem;max-width:380px;margin-left:auto}
.cart-summary .row{display:flex;justify-content:space-between;margin-bottom:.6rem}
.cart-summary .total{font-weight:800;font-size:1.3rem;color:var(--aubergine)}
.cart-empty{text-align:center;padding:3rem 1rem;color:var(--aubergine)}

/* ===== FORMS ===== */
.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1.1rem}
@media (max-width:620px){.form-grid{grid-template-columns:1fr}}
.field{display:flex;flex-direction:column;gap:.35rem}
.field.field-full{grid-column:1/-1}
.field label{font-size:.85rem;font-weight:700;text-transform:uppercase;letter-spacing:.03em}
.field input,.field select,.field textarea{
  font:inherit;padding:.7em .8em;border:2px solid var(--ink);border-radius:var(--radius);background:var(--ivory);accent-color:var(--aubergine);min-height:44px}
.field textarea{min-height:120px;resize:vertical}
.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--red)}
.field-error{color:var(--red);font-size:.82rem;min-height:1.2em}
.hp-field{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}
.form-msg{min-height:1.4em;font-weight:700}
.form-msg-ok{color:var(--lime-deep)}
.form-msg-error{color:var(--red)}
.newsletter-row{display:flex;gap:.5rem}
.newsletter-row input{flex:1;min-width:0}

/* ===== NOTICE / FAQ / CONTACT ===== */
.notice{border:2px solid var(--aubergine);background:var(--ivory-2);padding:1rem 1.2rem;border-radius:var(--radius);margin-bottom:1.5rem}
.notice-red{border-color:var(--red);color:var(--red)}
.faq-item{border-bottom:1px solid var(--ivory-2);padding:.4rem 0}
.faq-item summary{cursor:pointer;font-weight:700;padding:.8rem .2rem;list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq-item summary::after{content:"+";font-size:1.4rem;color:var(--red)}
.faq-item[open] summary::after{content:"\2212"}
.faq-item p{padding:0 .2rem .8rem;color:var(--aubergine-2)}
.contact-layout{display:grid;grid-template-columns:1fr 1fr;gap:2.5rem}
@media (max-width:760px){.contact-layout{grid-template-columns:1fr}}
.contact-info li{display:flex;gap:.6rem;align-items:flex-start;margin-bottom:1rem}
.contact-info svg{color:var(--red);flex-shrink:0;margin-top:.1em}

/* ===== BADGES / DIVIDERS / DECOR ===== */
.badge-seal{width:90px;height:90px}
.section-divider{display:block;width:100%;color:var(--aubergine)}
.footer-divider{color:var(--lime)}
.ornament{position:absolute;pointer-events:none}

/* ===== PLANNER (signature feature) ===== */
.planner{background:var(--ivory-2);border:3px solid var(--ink);border-radius:var(--radius);padding:clamp(1.5rem,4vw,2.5rem);position:relative}
.planner-controls{display:flex;gap:1rem;flex-wrap:wrap;align-items:flex-end;margin-bottom:1.5rem}
.planner-controls .field{flex:1;min-width:160px}
.planner-list{list-style:none;display:grid;gap:.6rem}
.planner-list li{display:flex;justify-content:space-between;align-items:center;background:var(--ivory);border:1px solid var(--aubergine);border-radius:var(--radius);padding:.6rem .9rem}
.planner-list .qty{color:var(--aubergine);font-weight:700}
.planner-total{display:flex;justify-content:space-between;align-items:center;margin-top:1.2rem;font-weight:800;font-size:1.2rem;color:var(--aubergine)}

/* ===== SITE FOOTER ===== */
.site-footer{background:var(--aubergine);color:var(--ivory-2);margin-top:3rem}
.footer-inner{max-width:var(--maxw);margin-inline:auto;padding:2rem 1.25rem 1rem;display:grid;grid-template-columns:1.2fr 2fr 1.3fr;gap:2rem}
@media (max-width:860px){.footer-inner{grid-template-columns:1fr}}
.footer-logo{color:var(--ivory)}
.footer-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem}
@media (max-width:560px){.footer-cols{grid-template-columns:1fr}}
.footer-cols h3{font-size:.85rem;color:var(--lime);margin-bottom:.6em}
.footer-cols ul{list-style:none;display:grid;gap:.5rem}
.footer-cols a:hover{text-decoration:underline}
.newsletter-form h3{font-size:.85rem;color:var(--lime);margin-bottom:.6em}
.newsletter-form input[type=email]{padding:.65em .8em;border:2px solid var(--ivory-2);border-radius:var(--radius);min-height:44px;background:var(--ivory)}
.footer-bottom{text-align:center;padding:1rem 1.25rem 1.5rem;font-size:.85rem;border-top:1px solid rgba(244,239,227,.2)}
.footer-bottom a{text-decoration:underline;display:inline-flex;align-items:center;gap:.3em}

/* ===== COOKIE BANNER ===== */
.cookie-banner{position:fixed;left:1rem;right:1rem;bottom:1rem;z-index:150;background:var(--aubergine-2);color:var(--ivory);border:2px solid var(--lime);border-radius:var(--radius);padding:1rem 1.2rem;display:flex;flex-wrap:wrap;gap:1rem;align-items:center;justify-content:space-between;box-shadow:var(--shadow-paper);max-width:640px;margin-inline:auto}
.cookie-banner[hidden]{display:none}
.cookie-actions{display:flex;gap:.6rem;flex-wrap:wrap}

/* COMPONENTS:
.wrap - centered max-width content container
.section / .section-tight - vertical page rhythm padding
.reveal / .reveal.js-armed / .reveal-d1..d3 - scroll-reveal animation hook + stagger delays
.site-header / .header-inner / .logo / .logo-mark / .logo-word - sticky header & logo
.main-nav / .nav-list / .nav-toggle / .nav-cart / .cart-count - navigation + cart badge
.btn / .btn-lime / .btn-dark / .btn-ghost / .btn-block - button variants with fill-sweep hover
.hero / .hero-grain / .hero-inner / .hero-title / .hero-lede / .hero-art / .hero-actions - home hero
.page-hero - inner page hero banner
.breadcrumbs - small breadcrumb trail
.prose - readable long-form legal/content text column
.legal-toc - table of contents box for legal pages
.card-stack - wrapper for fanning product cards
.product-card / .product-media / .product-body / .price / .category / .product-actions - catalog card
.strip - horizontal scroll-snap product row on mobile, grid on desktop
.product-detail / .price-big / .qty-input - single product page layout
.cart-table / .cart-summary / .cart-empty / .cart-remove - cart & checkout
.form-grid / .field / .field-full / .field-error / .hp-field - form layout & validation
.form-msg / .form-msg-ok / .form-msg-error - form status messages
.notice / .notice-red - callout box
.faq-item - details/summary FAQ row
.contact-layout / .contact-info - contact page two-column layout
.badge-seal / .section-divider / .footer-divider / .ornament - decorative SVG hooks
.planner / .planner-controls / .planner-list / .planner-total - Školský plánovač signature feature
.site-footer / .footer-inner / .footer-cols / .newsletter-form / .footer-bottom - site footer
.cookie-banner / .cookie-actions - cookie consent banner
.grid / .grid-2 / .grid-3 / .grid-4 - responsive grid utilities
.mt-0..3 / .mb-0..3 - spacing utilities
.text-center / .flex / .flex-wrap / .flex-between - layout utilities
.sr-only / .skip-link - accessibility helpers
*/