/* Dugebelmo — rail-scale: slonovina, kaštan, jantarový lak */

:root{
  --bg:#f6f0e6;
  --bg-alt:#eadcc6;
  --bg-dark:#4a2b1b;
  --ink:#2c1f15;
  --ink-soft:#7c6a55;
  --ink-invert:#f6f0e6;
  --amber:#a9631d;
  --indigo:#2a3f63;
  --step:80px;
  --gap:24px;
}

*{box-sizing:border-box;}

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

body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:system-ui,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  font-size:17px;
  line-height:1.8;
  overflow-x:hidden;
}

h1,h2,h3{
  font-family:Georgia,"Times New Roman",serif;
  line-height:1.05;
  font-weight:400;
  margin:0 0 .6em;
  letter-spacing:-.01em;
}

h1{font-size:clamp(2.3rem,5.6vw,3.9rem);}
h2{font-size:clamp(1.5rem,2.9vw,2.05rem);}
h3{font-size:1.16rem;line-height:1.25;margin-bottom:.4em;}

p{margin:0 0 1.15em;}
p:last-child{margin-bottom:0;}

a{color:var(--amber);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;}
a:hover{text-decoration-thickness:2px;}

a:focus-visible,
nav a:focus-visible{
  outline:2px solid var(--amber);
  outline-offset:3px;
}

/* ---------- mřížka ---------- */

.grid{
  max-width:1240px;
  margin:0 auto;
  padding:0 28px;
  display:grid;
  grid-template-columns:repeat(12,1fr);
  column-gap:var(--gap);
}

/* servisní sloupec se stupnicí */
.rail{
  grid-column:1 / span 2;
  position:relative;
  padding-top:6px;
}

.rail .mark{
  display:block;
  font-size:13px;
  color:var(--indigo);
  letter-spacing:.02em;
  margin-bottom:14px;
}

.rail .scale{
  display:block;
  width:1px;
  height:100%;
  min-height:120px;
  background-image:repeating-linear-gradient(
    to bottom,
    var(--ink-soft) 0,
    var(--ink-soft) 24px,
    transparent 24px,
    transparent 40px
  );
  opacity:.55;
}

.flow{grid-column:3 / span 7;}
.flow-wide{grid-column:3 / span 9;}

/* ---------- hlavička a navigace ---------- */

.site-head{
  border-bottom:1px solid rgba(124,106,85,.35);
  padding:22px 0 18px;
}

.site-head .grid{row-gap:10px;align-items:baseline;}

.brand{
  grid-column:1 / span 3;
  font-family:Georgia,"Times New Roman",serif;
  font-size:1.35rem;
  letter-spacing:.02em;
  color:var(--ink);
  text-decoration:none;
}
.brand:hover{text-decoration:none;color:var(--amber);}

.site-nav{grid-column:4 / span 9;}

.site-nav ul{
  list-style:none;margin:0;padding:0;
  display:flex;flex-wrap:wrap;gap:8px 26px;
  justify-content:flex-end;
}

.site-nav a{
  color:var(--ink);
  text-decoration:none;
  font-size:15px;
  padding-bottom:3px;
  border-bottom:1px solid transparent;
}
.site-nav a:hover{color:var(--amber);border-bottom-color:var(--amber);}
.site-nav a[aria-current="page"]{border-bottom-color:var(--amber);color:var(--amber);}

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

.hero{padding:calc(var(--step) - 12px) 0 var(--step);}

.hero .rail{grid-column:1 / span 2;}

.hero-body{grid-column:3 / span 8;}

.hero h1{max-width:16ch;}

.hero .lede{
  font-size:1.12rem;
  color:var(--ink);
  max-width:62ch;
}

.hero .sub{
  color:var(--ink-soft);
  max-width:62ch;
}

/* ---------- sekce ---------- */

.band{padding:var(--step) 0;}
.band--alt{background:var(--bg-alt);}

.band--dark{
  background:var(--bg-dark);
  color:var(--ink-invert);
  padding:var(--step) 0;
}
.band--dark h2,.band--dark h3{color:var(--ink-invert);}
.band--dark .rail .mark{color:#c9b393;}
.band--dark .rail .scale{background-image:repeating-linear-gradient(to bottom,#c9b393 0,#c9b393 24px,transparent 24px,transparent 40px);opacity:.5;}
.band--dark a{color:#e0a45e;}
.band--dark .caption{color:#c9b393;}

/* dělítka — dílky stupnice */
.ticks{
  grid-column:3 / span 9;
  height:24px;
  margin-bottom:34px;
  background-image:repeating-linear-gradient(
    to right,
    var(--amber) 0,
    var(--amber) 1px,
    transparent 1px,
    transparent 18px
  );
  opacity:.6;
}
.band--dark .ticks{
  background-image:repeating-linear-gradient(to right,#e0a45e 0,#e0a45e 1px,transparent 1px,transparent 18px);
  opacity:.5;
}

/* ---------- seznamy ---------- */

.cols{
  grid-column:3 / span 9;
  columns:2;
  column-gap:44px;
  margin:0;
  padding:0;
  list-style:none;
}
.cols li{
  break-inside:avoid;
  padding-left:18px;
  position:relative;
  margin-bottom:14px;
}
.cols li::before{
  content:"";
  position:absolute;
  left:0;top:.72em;
  width:8px;height:1px;
  background:var(--amber);
}

.steps{
  grid-column:3 / span 7;
  list-style:none;
  margin:0;padding:0;
  counter-reset:s;
}
.steps li{
  counter-increment:s;
  position:relative;
  padding-left:44px;
  margin-bottom:20px;
}
.steps li::before{
  content:counter(s,decimal-leading-zero);
  position:absolute;left:0;top:.15em;
  font-size:13px;
  color:var(--indigo);
  font-variant-numeric:tabular-nums;
}
.band--dark .steps li::before{color:#9fb2d4;}

/* ---------- obrázky ---------- */

.figure-main{
  padding:0 0 var(--step);
}
.figure-main .caption-side{
  grid-column:1 / span 2;
  align-self:end;
  padding-bottom:4px;
}
.figure-main .shot{
  grid-column:4 / span 9;
  margin:0;
}
.figure-main img{
  display:block;
  width:100%;
  height:auto;
}

.caption{
  font-size:13px;
  line-height:1.55;
  color:var(--ink-soft);
}

.detail-wrap{align-items:start;row-gap:28px;}
.detail-wrap .shot{
  grid-column:3 / span 4;
  margin:0;
}
.detail-wrap .shot img{display:block;width:100%;height:auto;}
.detail-wrap .shot figcaption{margin-top:10px;}
.detail-wrap .text{grid-column:8 / span 5;}

/* ---------- text bloky ---------- */

.note{
  grid-column:3 / span 7;
  border-left:2px solid var(--amber);
  padding-left:20px;
  color:var(--ink-soft);
  font-size:16px;
}

.pair{grid-column:3 / span 9;display:grid;grid-template-columns:1fr 1fr;gap:34px 44px;}
.pair > div{min-width:0;}

.dash{
  width:34px;height:1px;
  background:var(--indigo);
  border:0;
  margin:26px 0;
}

/* ---------- About stupnice ---------- */

.rail--sticky{position:sticky;top:24px;align-self:start;}

/* ---------- patice ---------- */

.site-foot{
  border-top:1px solid rgba(124,106,85,.4);
  padding:34px 0 42px;
  background:var(--bg);
}
.site-foot .bay{
  grid-column:1 / span 12;
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  justify-content:space-between;
  gap:14px 28px;
}
.site-foot .fname{
  font-family:Georgia,"Times New Roman",serif;
  font-size:1.1rem;
}
.site-foot .flinks{
  list-style:none;margin:0;padding:0;
  display:flex;flex-wrap:wrap;gap:8px 22px;
}
.site-foot .flinks a{color:var(--ink);text-decoration:none;font-size:15px;border-bottom:1px solid transparent;}
.site-foot .flinks a:hover{color:var(--amber);border-bottom-color:var(--amber);}
.site-foot .rule{
  grid-column:1 / span 12;
  height:1px;
  background:rgba(124,106,85,.35);
  margin:22px 0 12px;
}
.site-foot .fnote{grid-column:1 / span 12;}

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

@media (max-width:900px){
  :root{--step:48px;}
  body{font-size:16.5px;}
  .grid{padding:0 20px;column-gap:18px;}
  .rail{grid-column:1 / span 12;padding-top:0;}
  .rail .scale{display:none;}
  .rail .mark{margin-bottom:8px;}
  .flow,.flow-wide,.hero-body,.ticks,.cols,.steps,.note,.pair,
  .detail-wrap .shot,.detail-wrap .text,
  .figure-main .shot,.figure-main .caption-side{grid-column:1 / span 12;}
  .cols{columns:1;}
  .pair{grid-template-columns:1fr;}
  .brand{grid-column:1 / span 12;}
  .site-nav{grid-column:1 / span 12;}
  .site-nav ul{justify-content:flex-start;gap:8px 18px;}
  .figure-main .caption-side{order:2;margin-top:10px;}
  .rail--sticky{position:static;}
  .detail-wrap .shot{max-width:340px;}
}

@media (max-width:520px){
  .grid{padding:0 16px;}
  .site-foot .bay{flex-direction:column;align-items:flex-start;}
}