/* Gelatro — herbářová hřbetní úprava */

:root {
  --bg: #eef1e8;
  --bg-alt: #e2e7dc;
  --bg-dark: #2c3a2c;
  --ink: #1f2620;
  --ink-soft: #6d7468;
  --ink-invert: #eef1e8;
  --accent: #5f7a46;
  --accent-2: #b4655a;
  --serif: Georgia, 'Times New Roman', serif;
  --sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
  --rhythm: 76px;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.65;
  overflow-x: hidden;
}

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

a { color: var(--accent); text-underline-offset: 3px; }
a:hover { color: var(--accent-2); }

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

/* ---------- mřížka ---------- */

.wrap {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  column-gap: 24px;
}

/* první sloupec patří hřbetu a záhlaví sekcí */
.col-text { grid-column: 2 / 8; }
.col-lead { grid-column: 2 / 10; }
.col-wide { grid-column: 2 / 12; }
.col-img  { grid-column: 7 / 13; }

/* ---------- hřbet ---------- */

.spine {
  grid-column: 1 / 2;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 9px;
  padding-top: 14px;
}

.spine span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--accent);
}

.spine span:nth-child(3n) { width: 12px; background: var(--accent-2); }

/* ---------- hlavička ---------- */

.site-head {
  border-bottom: 1px solid rgba(31, 38, 32, 0.18);
  padding: 26px 0 18px;
}

.head-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px 28px;
}

.brand {
  font-family: var(--serif);
  font-size: 25px;
  letter-spacing: 0.04em;
  text-decoration: none;
  color: var(--ink);
}

.brand em {
  font-style: normal;
  color: var(--accent);
}

.site-nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  margin: 0;
  padding: 0;
}

.site-nav a {
  font-family: var(--sans);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  text-decoration: none;
  padding: 3px 0;
  border-bottom: 1px solid transparent;
}

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

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

.hero { padding: calc(var(--rhythm) * 0.8) 0 var(--rhythm); }

.hero h1 {
  grid-column: 2 / 10;
  font-size: 52px;
  line-height: 1.12;
  font-weight: 400;
  margin: 0 0 22px;
  letter-spacing: -0.01em;
}

.rule-double {
  grid-column: 2 / 10;
  border: 0;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid rgba(31, 38, 32, 0.3);
  height: 4px;
  margin: 0 0 22px;
}

.hero-lead {
  grid-column: 2 / 8;
  font-size: 20px;
  color: var(--ink);
  margin: 0;
}

.hero-meta {
  grid-column: 2 / 8;
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin: 26px 0 0;
}

/* ---------- obrázky ---------- */

.figure-main {
  margin: 0;
  padding-bottom: var(--rhythm);
}

.figure-main img { width: 100%; }

figcaption {
  font-family: var(--sans);
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--ink-soft);
  margin-top: 10px;
  max-width: 46ch;
}

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

.section { padding: var(--rhythm) 0; }
.section-alt { background: var(--bg-alt); }

.kicker {
  grid-column: 1 / 3;
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-soft);
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(31, 38, 32, 0.25);
  margin: 0 0 26px;
}

.kicker b {
  font-weight: 400;
  color: var(--accent-2);
  margin-right: 8px;
}

h2 {
  font-size: 31px;
  line-height: 1.25;
  font-weight: 400;
  margin: 0 0 18px;
}

h3 {
  font-size: 21px;
  font-style: italic;
  font-weight: 400;
  margin: 34px 0 10px;
}

p { margin: 0 0 20px; }
p + p { text-indent: 1.4em; }

.lead {
  font-size: 20.5px;
  line-height: 1.6;
}

ul.list, ol.list {
  margin: 0 0 22px;
  padding-left: 1.2em;
}

ul.list { list-style: none; padding-left: 0; }

ul.list li {
  position: relative;
  padding-left: 26px;
  margin-bottom: 11px;
}

ul.list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 14px;
  height: 2px;
  background: var(--accent);
}

ol.list li { margin-bottom: 11px; padding-left: 4px; }
ol.list li::marker { color: var(--accent-2); font-family: var(--sans); font-size: 14px; }

.divider {
  display: flex;
  justify-content: center;
  gap: 10px;
  padding: calc(var(--rhythm) * 0.5) 0;
}

.divider span {
  width: 20px;
  height: 2px;
  background: var(--accent-2);
}

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

.section-dark {
  background: var(--bg-dark);
  color: var(--ink-invert);
  padding: var(--rhythm) 0;
}

.section-dark .kicker {
  color: rgba(238, 241, 232, 0.7);
  border-bottom-color: rgba(238, 241, 232, 0.3);
}

.section-dark .kicker b { color: var(--accent-2); }
.section-dark figcaption { color: rgba(238, 241, 232, 0.66); }
.section-dark a { color: #b7cba0; }

.section-dark ul.list li::before { background: #b7cba0; }

.figure-detail {
  grid-column: 2 / 6;
  margin: 0;
}

.detail-text { grid-column: 7 / 12; }

/* ---------- stránkový obsah ---------- */

.page { padding: calc(var(--rhythm) * 0.7) 0 var(--rhythm); }

.page h1 {
  grid-column: 2 / 10;
  font-size: 42px;
  line-height: 1.16;
  font-weight: 400;
  margin: 0 0 18px;
}

.dropcap::first-letter {
  float: left;
  font-size: 62px;
  line-height: 0.86;
  padding: 6px 12px 0 0;
  color: var(--accent);
}

.legal h2 { font-size: 25px; margin-top: 40px; }
.legal h2:first-of-type { margin-top: 0; }

/* ---------- patička ---------- */

.site-foot {
  border-top: 1px solid rgba(31, 38, 32, 0.2);
  padding: 48px 0 56px;
  text-align: center;
}

.foot-brand {
  font-size: 22px;
  letter-spacing: 0.05em;
  margin: 0 0 16px;
}

.foot-nav ul {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
}

.foot-nav li + li {
  border-left: 1px solid rgba(31, 38, 32, 0.3);
}

.foot-nav a {
  display: inline-block;
  padding: 2px 14px;
  font-family: var(--sans);
  font-size: 13px;
  color: var(--ink-soft);
  text-decoration: none;
}

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

.foot-mail { margin: 0 0 10px; }

.foot-note {
  font-family: var(--sans);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--ink-soft);
  max-width: 54ch;
  margin: 0 auto;
}

/* ---------- responzivita ---------- */

@media (max-width: 900px) {
  :root { --rhythm: 46px; }
  body { font-size: 17.5px; }
  .wrap { padding: 0 18px; }
  .grid { grid-template-columns: 1fr; column-gap: 0; }
  .spine {
    grid-column: auto;
    flex-direction: row;
    gap: 7px;
    padding: 0 0 18px;
  }
  .spine span { width: 2px; height: 20px; }
  .spine span:nth-child(3n) { width: 2px; height: 11px; }
  .col-text, .col-lead, .col-wide, .col-img,
  .kicker, .hero h1, .hero-lead, .hero-meta, .rule-double,
  .figure-detail, .detail-text, .page h1 { grid-column: auto; }
  .hero h1 { font-size: 34px; }
  .page h1 { font-size: 30px; }
  h2 { font-size: 26px; }
  .lead, .hero-lead { font-size: 19px; }
  .figure-detail { margin-bottom: 28px; }
  .kicker { margin-bottom: 20px; }
  .dropcap::first-letter { font-size: 50px; }
}