/* Knihomolna — neon-noir antikvariát. Palette derived from warm bookshelf photography. */

:root{
  --bg:#130e0a;
  --bg-soft:#1b140d;
  --surface:#221910;
  --surface-2:#2b2015;
  --line:rgba(243,231,211,.1);
  --cream:#f3e7d3;
  --cream-dim:#d8c7a8;
  --muted:#a6906f;
  --amber:#f0a93e;
  --amber-bright:#ffc266;
  --amber-glow:rgba(240,169,62,.55);
  --green:#4fae79;
  --green-glow:rgba(79,174,121,.5);
  --shadow:rgba(0,0,0,.55);

  --font-display:Georgia,'Iowan Old Style','Palatino Linotype',serif;
  --font-body:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  --font-mono:'Courier New',ui-monospace,monospace;

  --radius:4px;
  --wrap:1180px;
}

*,*::before,*::after{box-sizing:border-box}
html,body{overflow-x:clip}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--cream-dim);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{font-family:var(--font-display);color:var(--cream);margin:0 0 .5em;line-height:1.15;font-weight:600}
p{margin:0 0 1em}
button{font-family:inherit;cursor:pointer}
input,select,textarea{font-family:inherit;font-size:1rem}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}

/* texture layers */
.rain-layer{
  position:fixed;inset:0;width:100vw;height:100vh;z-index:0;pointer-events:none;
  opacity:.14;
  background-image:repeating-linear-gradient(112deg, rgba(240,169,62,0) 0px, rgba(240,169,62,0) 5px, rgba(240,169,62,.55) 6px, rgba(240,169,62,0) 8px, rgba(240,169,62,0) 46px);
  background-size:160px 240px;
  animation:rain-fall 7s linear infinite;
}
@keyframes rain-fall{from{background-position:0 0}to{background-position:-46px 240px}}
.grain-overlay{position:fixed;inset:0;width:100vw;height:100vh;z-index:60;pointer-events:none;mix-blend-mode:overlay}

.site-header,.site-main,.site-footer{position:relative;z-index:1}

/* focus */
:focus-visible{outline:2px solid var(--amber-bright);outline-offset:3px;border-radius:2px}

/* icon sprite usage */
.icon{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.6;vertical-align:middle}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;
  background:rgba(19,14,10,.86);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  z-index:40;
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:14px;padding-bottom:14px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{width:38px;aspect-ratio:1;height:auto;flex-shrink:0}
.logo-word{width:148px;aspect-ratio:180/32;height:auto}
.main-nav ul{display:flex;gap:28px}
.main-nav a{
  font-size:.95rem;letter-spacing:.02em;color:var(--cream-dim);position:relative;padding:4px 0;
}
.main-nav a::after{
  content:"";position:absolute;left:0;bottom:-2px;width:100%;height:1px;background:var(--amber);
  transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.main-nav a:hover{color:var(--cream)}
.main-nav a:hover::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:18px}
.cart-link{position:relative;display:flex;align-items:center;gap:6px;color:var(--cream)}
.cart-link .icon{width:24px;height:24px}
.cart-count{
  display:inline-flex;align-items:center;justify-content:center;min-width:19px;height:19px;padding:0 4px;
  background:var(--amber);color:var(--bg);font-size:.72rem;font-weight:700;border-radius:999px;
  font-family:var(--font-mono);
}
.cart-count.bump{animation:bump .4s ease}
@keyframes bump{0%{transform:scale(1)}40%{transform:scale(1.5)}100%{transform:scale(1)}}

.menu-toggle{
  display:none;background:none;border:1px solid var(--line);border-radius:var(--radius);
  width:44px;height:44px;flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.menu-toggle span{width:20px;height:2px;background:var(--cream);transition:transform .25s ease,opacity .25s ease}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

@media (max-width:860px){
  .main-nav{
    position:fixed;top:0;right:0;height:100vh;width:min(78vw,320px);
    background:var(--bg-soft);border-left:1px solid var(--line);
    padding:90px 28px 28px;
    transform:translateX(100%);visibility:hidden;transition:transform .3s ease,visibility .3s ease;
    z-index:50;
  }
  .main-nav.open{transform:translateX(0);visibility:visible}
  .main-nav ul{flex-direction:column;gap:22px}
  .main-nav a{font-size:1.1rem}
  .menu-toggle{display:flex}
}

/* ===== Buttons ===== */
.btn{
  position:relative;display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border:1px solid var(--amber);border-radius:var(--radius);
  background:transparent;color:var(--cream);font-size:.95rem;letter-spacing:.02em;
  overflow:hidden;z-index:0;transition:color .3s ease;min-height:44px;
}
.btn::before{
  content:"";position:absolute;inset:0;width:100%;left:-100%;background:var(--amber);
  transition:left .32s ease;z-index:-1;
}
.btn:hover::before,.btn:focus-visible::before{left:0}
.btn:hover,.btn:focus-visible{color:var(--bg)}
.btn.btn-solid{background:var(--amber);color:var(--bg);border-color:var(--amber)}
.btn.btn-solid::before{background:var(--amber-bright)}
.btn.btn-solid:hover{color:var(--bg)}
.btn.btn-ghost-green{border-color:var(--green)}
.btn.btn-ghost-green::before{background:var(--green)}
.btn.btn-small{padding:9px 16px;font-size:.85rem;min-height:38px}
.btn[disabled]{opacity:.5;cursor:not-allowed}

/* ===== Reveal ===== */
.reveal{opacity:1;transform:none}
.reveal.js-hidden{opacity:0;transform:translateY(28px)}
.reveal.in-view{opacity:1;transform:none;transition:opacity .7s ease,transform .7s ease}
.reveal.d1.js-hidden{transition-delay:.08s}
.reveal.d2.js-hidden{transition-delay:.16s}
.reveal.d3.js-hidden{transition-delay:.24s}
.reveal.d4.js-hidden{transition-delay:.32s}

/* ===== Hero ===== */
.hero{position:relative;padding:64px 0 90px;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:40px;align-items:center}
.hero-copy{position:relative;z-index:2}
.hero-kicker{
  font-family:var(--font-mono);text-transform:uppercase;letter-spacing:.18em;font-size:.78rem;
  color:var(--green);display:inline-flex;align-items:center;gap:8px;margin-bottom:18px;
}
.hero h1{
  font-size:clamp(2.6rem,6vw,4.6rem);margin-bottom:18px;
  text-shadow:0 0 14px var(--amber-glow),0 0 36px rgba(240,169,62,.25);
}
.hero h1 .w{display:inline-block;opacity:0;transform:translateY(.5em);filter:blur(2px)}
.hero h1.run .w{animation:word-rise .6s cubic-bezier(.2,.8,.2,1) forwards}
@keyframes word-rise{to{opacity:1;transform:translateY(0);filter:blur(0)}}
p.lead{font-size:1.15rem;color:var(--cream-dim);max-width:46ch;margin-bottom:28px}
.hero-ctas{display:flex;gap:14px;flex-wrap:wrap}

.hero-art{position:relative;z-index:1;aspect-ratio:1/1}
.hero-photo{
  position:absolute;border-radius:var(--radius);box-shadow:0 30px 60px var(--shadow);
  object-fit:cover;filter:sepia(.25) saturate(1.1) brightness(.85);
}
.hero-photo.p1{top:4%;left:4%;width:62%;height:62%;z-index:2}
.hero-photo.p2{bottom:2%;right:0;width:46%;height:46%;z-index:3;border:1px solid var(--line)}
.hero-svg{position:absolute;inset:0;width:100%;height:100%;z-index:4;pointer-events:none}
.hero-badge{
  position:absolute;top:-6%;right:8%;width:110px;height:110px;z-index:5;
  animation:spin-slow 30s linear infinite;
}
@media (prefers-reduced-motion:reduce){.hero-badge{animation:none}}
@keyframes spin-slow{to{transform:rotate(360deg)}}

@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr}
  .hero-art{max-width:420px;margin:0 auto}
}

/* dividers / ornaments */
.divider{display:block;width:100%;height:28px;margin:8px 0}
.section-head{max-width:640px;margin:0 auto 44px;text-align:center}
.section-head .hero-kicker{display:inline-flex;margin:0 auto 14px}
.section{padding:70px 0}
.section.alt{background:linear-gradient(180deg,var(--bg-soft),var(--bg))}

/* ===== Collage (about teaser) ===== */
.collage{display:grid;grid-template-columns:repeat(6,1fr);grid-template-rows:repeat(4,70px);gap:14px;position:relative}
.collage img{width:100%;height:100%;object-fit:cover;border-radius:var(--radius);filter:sepia(.2) saturate(1.05) brightness(.88)}
.collage-item{position:relative;overflow:hidden;border-radius:var(--radius);box-shadow:0 18px 40px var(--shadow)}
.collage-item.c1{grid-column:1/5;grid-row:1/4}
.collage-item.c2{grid-column:5/7;grid-row:1/3}
.collage-item.c3{grid-column:5/7;grid-row:3/5}
.collage-caption{
  position:absolute;left:0;bottom:0;right:0;padding:10px 12px;
  background:linear-gradient(180deg,transparent,rgba(19,14,10,.9));
  font-family:var(--font-mono);font-size:.75rem;letter-spacing:.04em;color:var(--cream);
}
.about-intro{display:grid;grid-template-columns:.9fr 1.1fr;gap:56px;align-items:center}
@media (max-width:860px){
  .about-intro{grid-template-columns:1fr}
  .collage{grid-template-rows:repeat(3,90px)}
}

/* ===== Product strip & grid ===== */
.strip{display:flex;gap:20px;overflow-x:auto;padding:6px 2px 20px;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch}
.strip::-webkit-scrollbar{height:6px}
.strip::-webkit-scrollbar-thumb{background:var(--surface-2);border-radius:4px}
.strip .card{scroll-snap-align:start;flex:0 0 260px}

.grid-products{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
@media (max-width:980px){.grid-products{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.grid-products{grid-template-columns:1fr}}

.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.card:hover{transform:translateY(-6px);box-shadow:0 22px 44px var(--shadow);border-color:var(--amber)}
.card-media{aspect-ratio:4/3;overflow:hidden;position:relative;background:var(--surface-2)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;filter:sepia(.18) saturate(1.05) brightness(.9)}
.card:hover .card-media img{transform:scale(1.08)}
.card-cat{
  position:absolute;top:10px;left:10px;background:rgba(19,14,10,.78);color:var(--green);
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.05em;padding:4px 8px;border-radius:3px;
  border:1px solid var(--green-glow);
}
.card-body{padding:16px 18px 20px}
.card-body h3{font-size:1.1rem;margin-bottom:2px}
.card-author{color:var(--muted);font-size:.85rem;margin-bottom:10px}
.card-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:14px}
.price{font-family:var(--font-mono);color:var(--amber-bright);font-size:1.05rem;font-weight:700}

/* ===== Filters ===== */
.filters{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:30px}
.filter-btn{
  padding:9px 16px;border:1px solid var(--line);border-radius:999px;background:transparent;color:var(--cream-dim);
  font-size:.85rem;transition:border-color .2s ease,color .2s ease;min-height:38px;
}
.filter-btn:hover{color:var(--cream);border-color:var(--amber)}
.filter-btn.active{background:var(--amber);color:var(--bg);border-color:var(--amber)}

/* ===== Calculator (signature feature) ===== */
.calc{
  background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:36px;
  display:grid;grid-template-columns:1fr 1fr;gap:34px;position:relative;overflow:hidden;
}
.calc::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  box-shadow:inset 0 0 90px rgba(240,169,62,.07);
}
.calc-field{margin-bottom:16px}
.calc-field label{display:block;font-family:var(--font-mono);font-size:.78rem;letter-spacing:.04em;color:var(--green);margin-bottom:6px;text-transform:uppercase}
.calc select,.calc input[type=number]{
  width:100%;padding:11px 12px;background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius);
  color:var(--cream);accent-color:var(--amber);
}
.calc-result{
  background:var(--bg-soft);border:1px dashed var(--amber-glow);border-radius:var(--radius);padding:24px;
  display:flex;flex-direction:column;justify-content:center;gap:10px;align-self:start;
}
.calc-result .amount{font-family:var(--font-display);font-size:2.1rem;color:var(--amber-bright);text-shadow:0 0 16px var(--amber-glow)}
.calc-result p{margin:0;color:var(--muted);font-size:.9rem}
@media (max-width:820px){.calc{grid-template-columns:1fr}}

/* ===== Steps / care list ===== */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.step{position:relative;padding-left:46px}
.step .num{
  position:absolute;left:0;top:0;width:32px;height:32px;border:1px solid var(--amber);border-radius:50%;
  display:flex;align-items:center;justify-content:center;font-family:var(--font-mono);color:var(--amber-bright);font-size:.85rem;
}
.care-list{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.care-item{display:flex;gap:14px;align-items:flex-start;padding:16px;border:1px solid var(--line);border-radius:var(--radius)}
.care-item .icon{flex-shrink:0;width:26px;height:26px;color:var(--green);margin-top:2px}
@media (max-width:820px){.steps,.care-list{grid-template-columns:1fr}}

/* ===== Badge/seal ===== */
.seal{width:120px;height:120px;flex-shrink:0}

/* ===== decorative texture / ornament ===== */
.section-textured{position:relative;overflow:hidden}
.section-textured .wrap{position:relative;z-index:1}
.spines-pattern{position:absolute;inset:0;width:100%;height:100%;z-index:0;pointer-events:none}
.ornament{width:120px;height:60px;display:block;margin:0 auto 18px}

/* ===== Forms ===== */
.form{max-width:560px}
.field{margin-bottom:18px}
.field label{display:block;margin-bottom:6px;font-size:.88rem;color:var(--cream-dim)}
.field input,.field textarea,.field select{
  width:100%;padding:12px 14px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  color:var(--cream);accent-color:var(--amber);min-height:44px;
}
.field textarea{min-height:120px;resize:vertical}
.field.radio-group{display:flex;gap:22px;flex-wrap:wrap}
.field.radio-group label{display:flex;align-items:center;gap:8px;font-size:.9rem;color:var(--cream-dim)}
.hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}
.form-msg{min-height:1.4em;font-size:.9rem;margin-top:10px}
.form-msg.ok{color:var(--green)}
.form-msg.err{color:#e06a5a}
fieldset{border:1px solid var(--line);border-radius:var(--radius);padding:16px;margin:0 0 18px}
legend{font-family:var(--font-mono);font-size:.78rem;letter-spacing:.04em;color:var(--green);text-transform:uppercase;padding:0 6px}

/* ===== Cookie banner ===== */
.cookie-banner{
  position:fixed;left:16px;right:16px;bottom:16px;max-width:560px;z-index:80;
  background:var(--bg-soft);border:1px solid var(--line);border-radius:8px;padding:22px;
  box-shadow:0 20px 50px var(--shadow);
  display:none;gap:14px;flex-direction:column;
}
.cookie-banner.show{display:flex}
.cookie-banner p{margin:0;font-size:.9rem;color:var(--cream-dim)}
.cookie-actions{display:flex;gap:12px;flex-wrap:wrap}
.cookie-actions .btn{min-width:120px}
.btn-decline{border-color:var(--line);color:var(--cream)}
.btn-decline::before{background:var(--surface-2)}
.btn-decline:hover{color:var(--cream)}

/* ===== Cart page ===== */
.cart-table{width:100%;border-collapse:collapse;margin-bottom:30px}
.cart-table th{text-align:left;font-family:var(--font-mono);font-size:.75rem;letter-spacing:.04em;color:var(--green);text-transform:uppercase;padding:10px 8px;border-bottom:1px solid var(--line)}
.cart-table td{padding:14px 8px;border-bottom:1px solid var(--line);vertical-align:middle}
.cart-item-info{display:flex;gap:14px;align-items:center}
.cart-item-info img{width:56px;height:76px;object-fit:cover;border-radius:3px}
.qty-box{display:inline-flex;align-items:center;border:1px solid var(--line);border-radius:var(--radius)}
.qty-box button{background:none;border:none;color:var(--cream);width:34px;height:34px;font-size:1rem}
.qty-box input{width:40px;text-align:center;background:none;border:none;color:var(--cream);min-height:34px}
.remove-btn{color:var(--muted);font-size:.8rem;text-decoration:underline;background:none;border:none}
.cart-summary{max-width:360px;margin-left:auto;border-top:1px solid var(--line);padding-top:16px}
.cart-summary .row{display:flex;justify-content:space-between;margin-bottom:10px}
.cart-summary .total{font-size:1.3rem;color:var(--amber-bright);font-family:var(--font-mono)}
.empty-cart{text-align:center;padding:60px 0;color:var(--muted)}

/* ===== Product detail ===== */
.product-detail{display:grid;grid-template-columns:.8fr 1fr;gap:48px}
.product-detail .card-media{aspect-ratio:3/4;border-radius:8px;border:1px solid var(--line)}
.product-meta{display:flex;gap:16px;flex-wrap:wrap;margin:18px 0;color:var(--muted);font-size:.9rem;font-family:var(--font-mono)}
.qty-row{display:flex;align-items:center;gap:16px;margin:22px 0}
@media (max-width:820px){.product-detail{grid-template-columns:1fr}}

/* ===== FAQ ===== */
.faq-item{border-bottom:1px solid var(--line);padding:18px 0}
.faq-item summary{cursor:pointer;font-family:var(--font-display);font-size:1.1rem;color:var(--cream);list-style:none;display:flex;justify-content:space-between;align-items:center;gap:12px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .icon{transition:transform .25s ease;flex-shrink:0}
.faq-item[open] summary .icon{transform:rotate(45deg)}
.faq-item p{margin-top:12px;color:var(--cream-dim)}

/* ===== Legal pages ===== */
.legal h2{margin-top:40px;font-size:1.4rem}
.legal{max-width:760px}

/* ===== Page header (interior pages) ===== */
.page-hero{padding:56px 0 20px}
.page-hero h1{font-size:clamp(2rem,4vw,2.9rem)}
.breadcrumb{font-family:var(--font-mono);font-size:.78rem;color:var(--muted);letter-spacing:.04em;margin-bottom:14px}

/* ===== 404 ===== */
.notfound{min-height:60vh;display:flex;align-items:center;justify-content:center;text-align:center;padding:60px 0}
.notfound svg{width:220px;height:220px;margin:0 auto 20px}

/* ===== Footer ===== */
.site-footer{background:var(--bg-soft);border-top:1px solid var(--line);margin-top:60px;padding:60px 0 0}
.footer-grid{display:grid;grid-template-columns:1.2fr 2fr 1.2fr;gap:40px;padding-bottom:40px}
.footer-brand .logo-word{width:140px;aspect-ratio:180/32;height:auto;margin-bottom:14px}
.footer-brand p{color:var(--muted);font-size:.9rem;max-width:30ch}
.footer-nav{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.footer-col h3{font-size:.85rem;font-family:var(--font-mono);letter-spacing:.05em;text-transform:uppercase;color:var(--green);margin-bottom:14px}
.footer-col li{margin-bottom:10px}
.footer-col a{color:var(--cream-dim);font-size:.92rem}
.footer-col a:hover{color:var(--amber-bright)}
.footer-newsletter h3{font-size:1.1rem;color:var(--cream)}
.newsletter-form{display:flex;gap:10px;margin-top:14px;flex-wrap:wrap}
.newsletter-form input[type=email]{flex:1;min-width:160px;padding:11px 12px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);color:var(--cream)}
.footer-bottom{border-top:1px solid var(--line);padding:22px 0;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:.85rem;color:var(--muted)}
.footer-bottom a:hover{color:var(--amber-bright)}
@media (max-width:860px){
  .footer-grid{grid-template-columns:1fr}
  .footer-nav{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:560px){.footer-nav{grid-template-columns:1fr 1fr}}

/* reduced motion global */
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important}
  html{scroll-behavior:auto}
}