/* =========================================================
   SULAN — Běh kolem Otavy
   Design language: riverside trail race.
   The course runs out-and-back along the Otava riverbank,
   so a meandering river line is used as the recurring motif.
   Quick facts are styled like a paper race bib — torn edge,
   stamped numerals — since every edition IS a numbered ročník.
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Oswald:wght@500;600;700&family=Source+Sans+3:wght@400;600;700&family=IBM+Plex+Mono:wght@500;600&display=swap');

:root{
  /* River + gravel-path palette, pulled from the course itself */
  --river-deep:   #163B3F;   /* deep shaded water under the trees */
  --river-mid:    #2E7C82;   /* open water, links, secondary accent */
  --gravel:       #E7DDC2;   /* šotolina — the gravel half of the course */
  --paper:        #FBF8F1;   /* page background, warm off-white */
  --sunrise:      #DD5B27;   /* 10:00 summer start, the CTA colour */
  --sunrise-dark: #B8451B;
  --ink:          #1E2622;
  --ink-soft:     #4A544F;
  --line:         #D9CFB0;

  --font-display: 'Oswald', sans-serif;
  --font-body: 'Source Sans 3', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  --max-w: 880px;
  --radius: 10px;
}

*{ box-sizing: border-box; }
html{ padding:0; margin:0; -webkit-text-size-adjust: 100%; }

body{
  background: var(--paper);
  color: var(--ink);
  font: 400 17px/1.6 var(--font-body);
  margin:0;
}

a{ color: var(--river-mid); font-weight: 600; text-decoration: none; }
a:hover{ color: var(--sunrise-dark); text-decoration: underline; }
img{ max-width: 100%; height: auto; display:block; border:0; border-radius: 6px; }
hr{ border:0; border-top: 1px solid var(--line); margin: 32px 0; }

h1,h2,h3,h4{
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--river-deep);
  margin: 0 0 12px;
  line-height: 1.15;
}
h2{ font-size: 28px; text-transform: uppercase; letter-spacing: .5px; }
h3{ font-size: 21px; }

.container{ width: 100%; max-width: var(--max-w); margin: 0 auto; padding: 0 20px; }

/* ---------- skip link / focus ---------- */
.skip-link{
  position: absolute; left: -999px; top: auto;
  background: var(--river-deep); color:#fff; padding: 10px 16px; z-index: 100;
  border-radius: 0 0 6px 0;
}
.skip-link:focus{ left: 0; top: 0; }
a:focus-visible, summary:focus-visible, button:focus-visible{
  outline: 3px solid var(--sunrise); outline-offset: 2px;
}

/* ---------- header / hero ---------- */
header.hero{
  position: relative;
  background: linear-gradient(180deg, rgba(22,59,63,.55), rgba(22,59,63,.78)),
              url('../img/banner_bg.jpg') center 30%/cover no-repeat;
  color: #fff;
  padding: 56px 0 76px;
}
.hero .container{ position: relative; z-index: 2; }
.eyebrow{
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--gravel);
  opacity: .9;
  margin-bottom: 10px;
}
.hero h1{
  color:#fff;
  font-size: clamp(40px, 11vw, 72px);
  text-transform: uppercase;
  letter-spacing: .5px;
  margin: 0;
}
.hero .tagline{
  font-size: clamp(16px, 4vw, 19px);
  color: var(--gravel);
  margin-top: 10px;
  max-width: 46ch;
}
nav.site-nav{
  margin-top: 28px;
  display:flex; gap: 18px; flex-wrap: wrap;
  font-family: var(--font-mono); font-size: 14px; text-transform: uppercase; letter-spacing: 1px;
}
nav.site-nav a{ color: #fff; border-bottom: 1px solid rgba(255,255,255,.4); padding-bottom: 2px; }
nav.site-nav a:hover{ color: var(--sunrise); border-color: var(--sunrise); text-decoration:none; }
nav.site-nav a[aria-current="page"]{ color: var(--sunrise); border-color: var(--sunrise); }

/* river divider between hero and content */
.river-divider{ display:block; width:100%; height: 30px; margin-top: -1px; }
.river-divider path{ fill: var(--paper); }

/* ---------- bib strip: quick facts ---------- */
.bib-strip{
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: -54px 0 36px;
  position: relative;
  z-index: 3;
}
@media(min-width: 640px){
  .bib-strip{ grid-template-columns: repeat(4, 1fr); }
}
.bib{
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
  box-shadow: 0 10px 24px rgba(22,59,63,.12);
  position: relative;
}
.bib::before, .bib::after{
  content:"";
  position:absolute; top:50%; transform: translateY(-50%);
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--paper);
  border: 1px solid var(--line);
}
.bib::before{ left: -8px; }
.bib::after{ right: -8px; }
.bib .bib-label{
  font-family: var(--font-mono);
  font-size: 12px; letter-spacing: 1.5px; text-transform: uppercase;
  color: var(--ink-soft);
}
.bib .bib-value{
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 20px;
  color: var(--river-deep);
  margin-top: 4px;
}
.bib.accent .bib-value{ color: var(--sunrise-dark); }

/* ---------- generic section ---------- */
section{ padding: 8px 0 44px; }
.lede{ font-size: 19px; color: var(--ink-soft); max-width: 60ch; }

/* ---------- results callout ---------- */
.results-box{
  background: var(--river-deep);
  color: #fff;
  border-radius: var(--radius);
  padding: 26px 24px;
  margin-bottom: 8px;
}
.results-box h2{ color:#fff; font-size: 22px; margin-bottom: 4px;}
.results-box .results-date{ font-family: var(--font-mono); color: var(--gravel); font-size: 14px; margin-bottom: 18px; }
.results-links{ display:flex; flex-wrap: wrap; gap: 12px; }
.btn{
  display:inline-block;
  background: var(--sunrise);
  color: #fff;
  font-weight: 700;
  padding: 12px 20px;
  border-radius: 8px;
  border: 0;
  font-size: 15px;
}
.btn:hover{ background: var(--sunrise-dark); color:#fff; text-decoration:none; }
.btn.ghost{
  background: transparent;
  border: 1.5px solid rgba(255,255,255,.6);
}
.btn.ghost:hover{ background: rgba(255,255,255,.12); border-color:#fff; }

/* ---------- info grid ---------- */
.info-grid{
  display:grid; grid-template-columns: 1fr; gap: 28px;
}
@media(min-width: 700px){
  .info-grid{ grid-template-columns: 1fr 1fr; }
}
.cat-list{ list-style:none; margin:0; padding:0; }
.cat-list li{
  display:flex; justify-content: space-between; gap: 12px;
  padding: 9px 0; border-bottom: 1px dashed var(--line);
  font-size: 16px;
}
.cat-list li span.code{
  font-family: var(--font-mono); font-weight: 600; color: var(--sunrise-dark);
  min-width: 22px;
}
dl.facts{ margin:0; }
dl.facts dt{ font-family: var(--font-mono); font-size: 13px; text-transform: uppercase; letter-spacing: 1px; color: var(--ink-soft); margin-top: 14px; }
dl.facts dd{ margin: 2px 0 0; font-size: 16.5px; }

/* ---------- course / map ---------- */
.course-photos{ display:grid; grid-template-columns: 1fr; gap: 16px; margin-top: 18px; }
@media(min-width: 700px){ .course-photos{ grid-template-columns: 1.3fr 1fr; } }
figure{ margin:0; }
figcaption{ font-size: 13.5px; color: var(--ink-soft); margin-top: 6px; font-family: var(--font-mono); }

/* ---------- sponsors ---------- */
.sponsor-tier{ margin-bottom: 18px; }
.sponsor-tier h4{ font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 1px; font-size: 13px; color: var(--ink-soft); margin-bottom: 8px; font-weight: 600;}
.sponsor-list{ list-style:none; margin:0; padding:0; display:flex; flex-wrap:wrap; gap: 8px 18px; }
.sponsor-list li{ font-size: 15.5px; }
.sponsor-logo{ max-width: 220px; margin-bottom: 14px; border-radius: 6px; }

/* ---------- archive / accordion ---------- */
.archive-item{
  background:#fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin-bottom: 14px;
  overflow: hidden;
}
.archive-item summary{
  list-style: none;
  cursor: pointer;
  padding: 16px 20px;
  display:flex; align-items:center; gap: 16px;
  font-family: var(--font-display);
}
.archive-item summary::-webkit-details-marker{ display:none; }
.archive-item summary .num{
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 15px;
  color: var(--sunrise-dark);
  background: var(--gravel);
  border-radius: 6px;
  padding: 4px 9px;
  flex-shrink: 0;
}
.archive-item summary .yr-title{ font-size: 19px; color: var(--river-deep); flex: 1; }
.archive-item summary .yr-date{ font-family: var(--font-mono); font-size: 13px; color: var(--ink-soft); }
.archive-item summary .chev{ transition: transform .2s ease; color: var(--ink-soft); flex-shrink:0; }
.archive-item[open] summary .chev{ transform: rotate(90deg); }
.archive-item .archive-body{
  padding: 0 20px 22px;
  border-top: 1px solid var(--line);
  padding-top: 16px;
}
.archive-body .links{ display:flex; flex-wrap:wrap; gap: 10px 18px; margin: 6px 0 14px; }
.archive-body .meta{ font-size: 15px; color: var(--ink-soft); margin: 4px 0; }
.archive-body .sponsor-list{ margin-top: 4px; }

/* ---------- footer ---------- */
footer{
  background: var(--river-deep);
  color: var(--gravel);
  padding: 36px 0 30px;
  margin-top: 40px;
  font-size: 15px;
}
footer a{ color: #fff; }
footer .organizer{ font-family: var(--font-display); font-size: 20px; color: #fff; margin-bottom: 8px; }
footer .foot-grid{ display:flex; flex-wrap:wrap; justify-content: space-between; gap: 18px; align-items:flex-end; }

.spacer{ height: 4px; }