/* Bavurketon — registrační kříže / knihařská paleta */

:root{
  --bg:#f7f3ea;
  --bg-alt:#eae4d8;
  --bg-dark:#43221f;
  --ink:#241b16;
  --ink-soft:#786b5d;
  --on-dark:#f7f3ea;
  --accent:#8a2c25;
  --accent-2:#8a6a24;
  --serif:Georgia,'Times New Roman',serif;
  --sans:system-ui,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  --step:84px;
  --gap:22px;
}

*,*::before,*::after{box-sizing:border-box;}

html{-webkit-text-size-adjust:100%;}

body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.72;
  overflow-x:hidden;
}

img{max-width:100%;height:auto;display:block;}

a{color:var(--accent);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;}
a:hover{text-decoration-thickness:2px;}
a:focus-visible,button:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:3px;
}

/* ---------- grid ---------- */

.wrap{
  width:100%;
  max-width:1180px;
  margin:0 auto;
  padding:0 26px;
}

.grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:0 var(--gap);
}

/* ---------- typography ---------- */

h1,h2,h3{font-family:var(--serif);font-weight:400;text-transform:none;}

h1{
  font-size:clamp(2.1rem,5.4vw,3.5rem);
  line-height:1.14;
  margin:0;
  letter-spacing:-0.01em;
}

h2{
  font-size:clamp(1.5rem,2.9vw,2.05rem);
  line-height:1.24;
  margin:0 0 18px;
}

h3{
  font-family:var(--serif);
  font-style:italic;
  font-size:1.2rem;
  line-height:1.35;
  margin:30px 0 10px;
}

p{margin:0 0 18px;}

.label{
  font-family:var(--sans);
  font-size:12px;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--ink-soft);
  margin:0 0 14px;
}

.label .num{color:var(--accent-2);}

.lead{font-size:1.16rem;line-height:1.62;}

.caption{
  font-size:12px;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:var(--ink-soft);
  margin:12px 0 0;
}

/* ---------- registration marks ---------- */

.regmark{
  position:absolute;
  width:20px;
  height:20px;
  pointer-events:none;
}
.regmark::before,.regmark::after{
  content:"";
  position:absolute;
  background:var(--accent-2);
}
.regmark::before{left:0;right:0;top:50%;height:1px;}
.regmark::after{top:0;bottom:0;left:50%;width:1px;}
.regmark.dark::before,.regmark.dark::after{background:#a8875a;}

/* ---------- separators ---------- */

.rule{margin:0 0 30px;max-width:560px;}
.rule span{display:block;height:2px;background:var(--accent);}
.rule span+span{background:var(--accent-2);margin:5px 0 0 24px;}
.rule.on-dark span{background:#b9564c;}
.rule.on-dark span+span{background:#b08c3c;}

/* ---------- header / nav ---------- */

.site-head{
  border-bottom:1px solid #ddd4c4;
  padding:18px 0;
}
.site-head .wrap{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:14px 30px;
  justify-content:space-between;
}

.brand{
  font-family:var(--serif);
  font-size:1.4rem;
  color:var(--ink);
  text-decoration:none;
  letter-spacing:.02em;
}
.brand:hover{color:var(--accent);}

.site-nav ul{
  list-style:none;
  display:flex;
  flex-wrap:wrap;
  gap:8px 22px;
  margin:0;padding:0;
}
.site-nav a{
  font-size:13px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--ink);
  text-decoration:none;
  padding-bottom:3px;
  border-bottom:2px solid transparent;
}
.site-nav a:hover,.site-nav a[aria-current="page"]{
  border-bottom-color:var(--accent);
  color:var(--accent);
}

/* ---------- hero ---------- */

.hero{padding:calc(var(--step) - 20px) 0 var(--step);}
.hero-inner{position:relative;padding:34px 0;}
.hero-inner .regmark.tl{top:-2px;left:-24px;}
.hero-inner .regmark.tr{top:-2px;right:-24px;}
.hero-inner .regmark.bl{bottom:-2px;left:-24px;}
.hero-inner .regmark.br{bottom:-2px;right:-24px;}

.hero h1{grid-column:1 / span 9;position:relative;}
.hero h1 .offset-rule{
  display:block;
  position:absolute;
  left:0;
  bottom:.16em;
  width:min(58%,430px);
  height:2px;
  background:var(--accent);
  opacity:.85;
}

.hero-body{margin-top:38px;}
.hero-body .intro{grid-column:1 / span 5;}
.hero-body .topics{grid-column:8 / span 4;}

.topics ul{list-style:none;margin:0;padding:0;}
.topics li{
  position:relative;
  padding-left:20px;
  margin-bottom:9px;
  font-size:15px;
  line-height:1.5;
}
.topics li::before{
  content:"";
  position:absolute;
  left:0;top:.55em;
  width:7px;height:7px;
  background:var(--accent);
}

/* ---------- sections ---------- */

.band{padding:var(--step) 0;}
.band-alt{background:var(--bg-alt);}
.band-dark{background:var(--bg-dark);color:var(--on-dark);}
.band-dark h2,.band-dark h3{color:var(--on-dark);}
.band-dark .label,.band-dark .caption{color:#c6b6a3;}
.band-dark .label .num{color:#c9a15c;}
.band-dark a{color:#e5a89f;}

.band + .band{padding-top:var(--step);}

/* text sections: 7 columns, stepping right */
.text-col{grid-column:1 / span 7;}
.shift-1{grid-column:2 / span 7;}
.shift-2{grid-column:3 / span 7;}
.shift-3{grid-column:4 / span 7;}

/* ---------- main figure ---------- */

.figure-band{padding:var(--step) 0;}
.main-fig{
  grid-column:3 / span 8;
  position:relative;
  margin:0;
  padding:16px;
}
.main-fig .regmark.tl{top:-4px;left:-4px;}
.main-fig .regmark.tr{top:-4px;right:-4px;}
.main-fig .regmark.bl{bottom:26px;left:-4px;}
.main-fig .regmark.br{bottom:26px;right:-4px;}
.main-fig img{width:100%;}
.main-fig figcaption{
  font-size:12px;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:var(--ink-soft);
  margin-top:12px;
  max-width:60ch;
}

/* ---------- detail block (dark) ---------- */

.detail-fig{
  grid-column:1 / span 4;
  margin:0;
}
.detail-fig img{width:100%;}
.detail-fig figcaption{
  font-size:11.5px;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:#c6b6a3;
  margin-top:10px;
}
.detail-text{grid-column:6 / span 6;}

/* ---------- lists ---------- */

.checklist{list-style:none;margin:0 0 20px;padding:0;}
.checklist li{
  position:relative;
  padding-left:22px;
  margin-bottom:10px;
}
.checklist li::before{
  content:"";
  position:absolute;
  left:0;top:.62em;
  width:8px;height:8px;
  border:1px solid var(--accent);
}
.band-dark .checklist li::before{border-color:#c9a15c;}

.steps{margin:0 0 20px;padding-left:1.2em;}
.steps li{margin-bottom:9px;padding-left:6px;}
.steps li::marker{color:var(--accent-2);font-family:var(--serif);}

dl.defs{margin:0 0 20px;}
dl.defs dt{
  font-family:var(--serif);
  font-style:italic;
  font-size:1.05rem;
  margin-top:16px;
}
dl.defs dd{margin:4px 0 0;}

/* ---------- about page ---------- */

.about-main{padding:var(--step) 0 calc(var(--step) - 20px);}
.about-block{
  grid-column:3 / span 7;
  position:relative;
}
.about-block .regmark{left:-70px;top:6px;}

.page-head{padding:calc(var(--step) - 24px) 0 0;}
.page-head h1{grid-column:1 / span 9;}
.page-head .page-intro{grid-column:1 / span 7;margin-top:24px;}

.legal-main{padding:calc(var(--step) - 14px) 0 var(--step);}
.legal-block{grid-column:1 / span 8;}

.contact-box{
  grid-column:3 / span 7;
  margin-top:44px;
  border-top:2px solid var(--accent);
  padding-top:20px;
}
.contact-box.wide{grid-column:1 / span 8;}

/* ---------- footer ---------- */

.site-foot{
  background:var(--bg-dark);
  color:var(--on-dark);
  padding:54px 0 46px;
  margin-top:0;
}
.site-foot .rule{margin-bottom:34px;}
.foot-brand{grid-column:1 / span 7;}
.foot-brand .name{
  font-family:var(--serif);
  font-size:1.5rem;
  display:block;
  margin-bottom:12px;
}
.foot-brand p{color:#d6c9b8;max-width:46ch;font-size:15px;}
.foot-nav{grid-column:8 / span 5;}
.foot-nav ul{list-style:none;margin:0 0 18px;padding:0;}
.foot-nav li{margin-bottom:7px;}
.foot-nav a{color:var(--on-dark);text-decoration:none;font-size:14px;letter-spacing:.06em;}
.foot-nav a:hover{color:#e5a89f;text-decoration:underline;}
.foot-mail a{color:#e5a89f;font-size:15px;}
.foot-note{
  grid-column:1 / span 12;
  margin-top:34px;
  padding-top:16px;
  border-top:1px solid #6a413c;
  font-size:12px;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:#b8a794;
}

/* ---------- responsive ---------- */

@media (max-width:900px){
  .main-fig{grid-column:1 / span 12;}
  .detail-fig{grid-column:1 / span 6;}
  .detail-text{grid-column:1 / span 12;margin-top:26px;}
  .hero h1{grid-column:1 / span 12;}
  .hero-body .intro{grid-column:1 / span 12;}
  .hero-body .topics{grid-column:1 / span 12;margin-top:26px;}
  .text-col,.shift-1,.shift-2,.shift-3,
  .about-block,.legal-block,.contact-box,.contact-box.wide,
  .page-head h1,.page-head .page-intro{grid-column:1 / span 12;}
  .about-block .regmark{position:static;display:block;margin-bottom:14px;}
  .foot-brand{grid-column:1 / span 12;}
  .foot-nav{grid-column:1 / span 12;margin-top:30px;}
}

@media (max-width:600px){
  :root{--step:50px;}
  body{font-size:16.5px;}
  .wrap{padding:0 18px;}
  .detail-fig{grid-column:1 / span 12;}
  .hero-inner .regmark{display:none;}
  .site-head .wrap{flex-direction:column;align-items:flex-start;gap:12px;}
  .site-nav ul{gap:8px 16px;}
  .main-fig{padding:10px 0;}
  .main-fig .regmark{display:none;}
  .hero h1 .offset-rule{width:70%;}
}