/* Gravistendul — základní styl */

:root {
  --bg: #1e1a20;
  --bg-alt: #272229;
  --bg-contrast: #e9e6e1;
  --text: #e9e6e1;
  --text-dim: #9c949c;
  --text-on-contrast: #1e1a20;
  --accent: #c9a24b;
  --accent-two: #a9b2bd;
  --sans: system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --serif: Georgia, "Times New Roman", serif;
  --gap: 128px;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.7;
  overflow-x: hidden;
}

.grid {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  column-gap: 24px;
}

.col-text { grid-column: 4 / span 6; max-width: 68ch; }
.col-list { grid-column: 4 / span 7; }
.col-wide { grid-column: 3 / span 8; }

h1, h2, h3 {
  font-family: var(--sans);
  font-weight: 800;
  margin: 0;
}

h1 {
  font-size: clamp(2.1rem, 5.2vw, 3.4rem);
  line-height: 0.98;
  letter-spacing: -0.03em;
}

h2 {
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
  margin-bottom: 28px;
}

h3 {
  font-size: 1.12rem;
  line-height: 1.25;
  letter-spacing: -0.01em;
  margin: 40px 0 12px;
}

p { margin: 0 0 22px; }
p:last-child { margin-bottom: 0; }

a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(201, 162, 75, 0.45);
}

a:hover { border-bottom-color: var(--accent); }

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

/* --- navigace --- */

.site-head {
  padding: 34px 0 0;
}

.site-nav ul {
  grid-column: 1 / -1;
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px 40px;
}

.site-nav a {
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-dim);
  border-bottom: none;
  padding-bottom: 3px;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--accent);
}

/* --- hero --- */

.hero {
  min-height: 78vh;
  display: flex;
  align-items: flex-end;
  padding: 120px 0 96px;
}

.hero .grid { width: 100%; }

.hero-inner {
  grid-column: 3 / span 8;
  text-align: center;
}

.hero-eyebrow {
  font-family: var(--sans);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--accent-two);
  margin-bottom: 34px;
}

.hero-sub {
  margin: 30px auto 0;
  max-width: 60ch;
  color: var(--text-dim);
  font-size: 1.05rem;
}

/* --- sekce --- */

.section { padding: 0 0 var(--gap); }
.section-first { padding-top: 0; }

.section-alt {
  background: var(--bg-alt);
  padding: var(--gap) 0;
  margin-bottom: var(--gap);
}

.section-contrast {
  background: var(--bg-contrast);
  color: var(--text-on-contrast);
  padding: var(--gap) 0;
  margin-bottom: var(--gap);
}

.section-contrast h2,
.section-contrast h3 { color: var(--text-on-contrast); }

.section-contrast a { color: #7a5f18; border-bottom-color: rgba(122, 95, 24, 0.5); }

.section-contrast .caption,
.section-contrast .sec-num { color: #6d6570; }

.sec-num {
  font-family: var(--sans);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.24em;
  color: var(--accent-two);
  display: block;
  margin-bottom: 18px;
}

/* --- obrázky --- */

figure { margin: 0; }

.figure-main {
  grid-column: 3 / span 8;
  padding: 96px 0;
  text-align: center;
}

.figure-main img,
.figure-detail img {
  display: block;
  width: 100%;
  height: auto;
}

.caption {
  font-family: var(--sans);
  font-size: 0.74rem;
  line-height: 1.5;
  letter-spacing: 0.05em;
  color: var(--text-dim);
  margin-top: 18px;
}

.detail-layout {
  align-items: start;
  row-gap: 48px;
}

.figure-detail { grid-column: 2 / span 4; }
.detail-text { grid-column: 7 / span 5; }

/* --- seznamy --- */

ul.checklist, ol.steps {
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
}

ul.checklist li, ol.steps li {
  position: relative;
  padding-left: 30px;
  margin-bottom: 14px;
}

ul.checklist li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--accent);
}

ol.steps { counter-reset: st; }

ol.steps li { counter-increment: st; padding-left: 44px; }

ol.steps li::before {
  content: counter(st, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.2em;
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--accent-two);
}

/* --- About --- */

.page-head { padding: 96px 0 72px; }
.page-head .col-text { text-align: left; }

.about-lead { font-size: 21px; line-height: 1.6; }

.rule-dash {
  grid-column: 4 / span 6;
  text-align: center;
  color: var(--accent-two);
  font-family: var(--sans);
  letter-spacing: 0.5em;
  padding: 56px 0;
}

.doc-block { padding-bottom: 64px; }

/* --- footer --- */

.site-foot {
  background: var(--bg-alt);
  padding: 120px 0;
  text-align: center;
}

.foot-inner { grid-column: 3 / span 8; }

.foot-name {
  font-family: var(--sans);
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  margin-bottom: 34px;
}

.foot-nav ul {
  list-style: none;
  margin: 0 0 34px;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px 40px;
}

.foot-nav a {
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-dim);
  border-bottom: none;
}

.foot-nav a:hover { color: var(--accent); }

.foot-mail { margin-bottom: 30px; }

.foot-note {
  font-family: var(--sans);
  font-size: 0.74rem;
  line-height: 1.6;
  color: var(--text-dim);
  max-width: 56ch;
  margin: 0 auto;
}

/* --- responsivita --- */

@media (max-width: 900px) {
  :root { --gap: 88px; }
  .col-text, .col-list, .col-wide,
  .hero-inner, .figure-main, .foot-inner, .rule-dash {
    grid-column: 1 / -1;
  }
  .figure-detail { grid-column: 1 / span 7; }
  .detail-text { grid-column: 1 / -1; }
  .figure-main { padding: 64px 0; }
}

@media (max-width: 620px) {
  :root { --gap: 72px; }
  body { font-size: 17px; }
  .grid { padding: 0 20px; }
  .hero { min-height: 0; padding: 88px 0 64px; }
  .site-nav ul, .foot-nav ul { gap: 12px 22px; }
  .figure-detail { grid-column: 1 / -1; }
  .figure-main { padding: 48px 0; }
  .site-foot { padding: 80px 0; }
  .page-head { padding: 64px 0 48px; }
}