/* EOSC Node Slovakia — Knowledge Base
   Minimal, dependency-free stylesheet. Light + dark theme. */

:root {
  --bg:        #ffffff;
  --bg-soft:   #f5f7fa;
  --bg-sink:   #eef2f7;
  --fg:        #16202e;
  --fg-soft:   #5a6a7e;
  --line:      #dde4ed;
  --brand:     #0b5fa5;
  --brand-2:   #0f9e8e;
  --accent:    #f0b429;
  --danger:    #c0392b;
  --radius:    12px;
  --radius-sm: 8px;
  --shadow:    0 1px 2px rgba(16,32,56,.06), 0 8px 24px rgba(16,32,56,.06);
  --maxw:      1180px;
  --font:      system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono:      ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}
/* Light theme only - the OS dark-mode preference is deliberately ignored. */
:root { --brand-ink: #084a80; color-scheme: light; }

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font-family: var(--font); font-size: 16px; line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; }
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { line-height: 1.25; margin: 0 0 .5em; font-weight: 650; letter-spacing: -.01em; }
h1 { font-size: clamp(1.7rem, 1.2rem + 2vw, 2.4rem); }
h2 { font-size: 1.35rem; }
h3 { font-size: 1.1rem; }
p  { margin: 0 0 1em; }
ul, ol { margin: 0 0 1em; padding-left: 1.3em; }
.muted { color: var(--fg-soft); }
.center { text-align: center; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
.section { padding: 34px 20px; }
.section-title { font-size: 1.05rem; text-transform: uppercase; letter-spacing: .08em; color: var(--fg-soft); margin-bottom: 16px; }
.plain { list-style: none; margin: 0; padding: 0; }

.skip { position: absolute; left: -9999px; }
.skip:focus { left: 12px; top: 12px; background: var(--brand); color: #fff; padding: 8px 14px; border-radius: var(--radius-sm); z-index: 100; }

/* ---------------------------------------------------------------- header */
.site-head {
  position: sticky; top: 0; z-index: 40;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.head-inner { display: flex; align-items: center; gap: 18px; min-height: 64px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 14px; color: inherit; }
.brand:hover { text-decoration: none; }
.brand-logo { height: 38px; width: auto; display: block; }
.brand .brand-text { padding-left: 14px; border-left: 1px solid var(--line); }
.brand .brand-text strong { font-weight: 600; color: var(--fg-soft); font-size: .95rem; white-space: nowrap; }
@media (max-width: 720px) { .brand-logo { height: 30px; } .brand .brand-text { display: none; } }
.brand-mark {
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  color: #fff; font-weight: 700; font-size: .72rem; letter-spacing: .06em;
  padding: 8px 9px; border-radius: 9px;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text small { color: var(--fg-soft); font-size: .76rem; }
.head-nav { margin-left: auto; display: flex; align-items: center; gap: 18px; }
.head-nav > a { color: var(--fg-soft); font-size: .93rem; }
.head-nav > a:hover { color: var(--fg); text-decoration: none; }
.lang-switch, .admin-link {
  border: 1px solid var(--line); padding: 5px 12px; border-radius: 999px; background: var(--bg-soft);
}
.nav-toggle { display: none; background: none; border: 1px solid var(--line); border-radius: var(--radius-sm);
  color: var(--fg); font-size: 1.1rem; padding: 6px 11px; cursor: pointer; margin-left: auto; }

.search-mini { display: flex; border: 1px solid var(--line); border-radius: 999px; overflow: hidden; background: var(--bg-soft); }
.search-mini input { border: 0; background: transparent; padding: 7px 14px; color: var(--fg); width: 210px; font: inherit; font-size: .9rem; }
.search-mini input:focus { outline: none; }
.search-mini button { border: 0; background: transparent; color: var(--fg-soft); padding: 0 12px; cursor: pointer; font-size: 1.1rem; }

/* ------------------------------------------------------------ breadcrumb */
.crumbs { border-bottom: 1px solid var(--line); background: var(--bg-soft); font-size: .85rem; }
.crumbs .wrap { padding-top: 9px; padding-bottom: 9px; display: flex; gap: 8px; flex-wrap: wrap; color: var(--fg-soft); }
.crumbs .sep { opacity: .5; }

/* ------------------------------------------------------------------ hero */
.hero {
  background:
    radial-gradient(900px 320px at 12% -10%, color-mix(in srgb, var(--brand) 16%, transparent), transparent 70%),
    radial-gradient(700px 300px at 88% 0%, color-mix(in srgb, var(--brand-2) 14%, transparent), transparent 70%),
    var(--bg-soft);
  border-bottom: 1px solid var(--line);
  padding: 56px 0 48px;
}
.hero .eyebrow { text-transform: uppercase; letter-spacing: .12em; font-size: .74rem; color: var(--brand); font-weight: 600; margin-bottom: 10px; }
.hero h1 { max-width: 20ch; }
.lead { font-size: 1.08rem; color: var(--fg-soft); max-width: 68ch; }

.search-big { display: flex; gap: 10px; margin: 26px 0 20px; max-width: 620px; }
.search-big input {
  flex: 1; padding: 13px 18px; border-radius: 999px; border: 1px solid var(--line);
  background: var(--bg); color: var(--fg); font: inherit; box-shadow: var(--shadow);
}
.search-big input:focus { outline: 2px solid color-mix(in srgb, var(--brand) 55%, transparent); outline-offset: 1px; }
.search-big button {
  padding: 13px 24px; border-radius: 999px; border: 0; cursor: pointer;
  background: var(--brand); color: #fff; font: inherit; font-weight: 600;
}
.search-big button:hover { background: var(--brand-ink); }

.stat-row { list-style: none; display: flex; flex-wrap: wrap; gap: 28px; padding: 0; margin: 18px 0 0; color: var(--fg-soft); font-size: .92rem; }
.stat-row strong { display: block; font-size: 1.6rem; color: var(--fg); line-height: 1.1; }

/* ----------------------------------------------------------------- cards */
.card-grid { display: grid; gap: 18px; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
.card-grid.compact { grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); }
.card {
  background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px; display: block; color: inherit; transition: border-color .15s, transform .15s, box-shadow .15s;
}
.card:hover { border-color: color-mix(in srgb, var(--brand) 45%, var(--line)); box-shadow: var(--shadow); text-decoration: none; transform: translateY(-2px); }
.card h3 { margin-bottom: .35em; }
.card-head { display: block; color: inherit; }
.card-head:hover { text-decoration: none; }
.card p { margin-bottom: .6em; font-size: .93rem; }
.card-meta { font-size: .78rem; color: var(--fg-soft); text-transform: uppercase; letter-spacing: .06em; margin: 10px 0 0; }
.topic-icon { font-size: 1.4rem; display: inline-block; margin-bottom: 6px; }
.topic-icon.big { font-size: 2rem; }

.chip-list { list-style: none; display: flex; flex-wrap: wrap; gap: 7px; padding: 0; margin: 10px 0 0; }
.chip {
  display: inline-block; font-size: .8rem; padding: 3px 11px; border-radius: 999px;
  background: var(--bg-sink); color: var(--fg-soft); border: 1px solid transparent;
}
.chip:hover { text-decoration: none; color: var(--brand); border-color: var(--line); }

.list-grid { display: grid; gap: 12px; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); }
.list-item {
  display: flex; flex-direction: column; gap: 4px; padding: 16px 18px;
  border: 1px solid var(--line); border-left: 3px solid color-mix(in srgb, var(--brand) 60%, var(--line));
  border-radius: var(--radius-sm); background: var(--bg); color: inherit;
}
.list-item:hover { text-decoration: none; background: var(--bg-soft); border-left-color: var(--brand); }
.list-item span.muted { font-size: .88rem; }
.list-cat { font-size: .72rem; text-transform: uppercase; letter-spacing: .07em; color: var(--brand); }

.recent-list { list-style: none; padding: 0; margin: 0; }
.recent-list li { display: flex; gap: 12px; align-items: baseline; padding: 9px 0; border-bottom: 1px solid var(--line); font-size: .95rem; flex-wrap: wrap; }
.recent-list li .muted { margin-left: auto; font-size: .82rem; }

.pill { font-size: .68rem; text-transform: uppercase; letter-spacing: .06em; padding: 2px 8px; border-radius: 999px; font-weight: 600; }
.pill-todo { background: color-mix(in srgb, var(--accent) 24%, transparent); color: #8a6100; }
.pill-draft { background: var(--bg-sink); color: var(--fg-soft); }
.pill-ok { background: color-mix(in srgb, var(--brand-2) 22%, transparent); color: #0b6c61; }

/* -------------------------------------------------------- page with side */
.page-grid { display: grid; grid-template-columns: 250px minmax(0, 1fr); gap: 42px; padding-top: 34px; padding-bottom: 50px; align-items: start; }
.side { position: sticky; top: 84px; font-size: .92rem; }
.side-title { text-transform: uppercase; letter-spacing: .08em; font-size: .72rem; color: var(--fg-soft); font-weight: 650; margin: 0 0 10px; }
.side-nav li a { display: block; padding: 5px 10px; border-radius: var(--radius-sm); color: var(--fg-soft); }
.side-nav li a:hover { background: var(--bg-soft); color: var(--fg); text-decoration: none; }
.side-nav li.is-active > a { color: var(--fg); font-weight: 600; }
.side-nav li.is-current > a { background: color-mix(in srgb, var(--brand) 12%, transparent); color: var(--brand); font-weight: 600; }
.side-nav ul { margin: 4px 0 8px; padding-left: 10px; border-left: 1px solid var(--line); }
.toc { margin-top: 26px; }
.toc li a { display: block; padding: 3px 0; color: var(--fg-soft); font-size: .88rem; }
.toc .toc-l3 { padding-left: 12px; }

.page-head { margin-bottom: 26px; padding-bottom: 18px; border-bottom: 1px solid var(--line); }
.article-meta { font-size: .85rem; margin: 0; }
.back-link { margin-top: 34px; font-size: .92rem; }

/* ----------------------------------------------------------------- prose */
.prose { font-size: 1.02rem; }
.prose h2 { margin-top: 1.8em; padding-top: .2em; }
.prose h3 { margin-top: 1.5em; }
.prose h4 { margin-top: 1.2em; font-size: 1rem; }
.prose li { margin-bottom: .3em; }
.prose blockquote {
  margin: 1.2em 0; padding: 12px 18px; border-left: 3px solid var(--brand-2);
  background: var(--bg-soft); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; color: var(--fg-soft);
}
.prose code { font-family: var(--mono); font-size: .88em; background: var(--bg-sink); padding: 1px 6px; border-radius: 5px; }
.kb-code { background: var(--bg-sink); padding: 14px 16px; border-radius: var(--radius-sm); overflow-x: auto; font-size: .88rem; border: 1px solid var(--line); }
.kb-code code { background: none; padding: 0; }
.kb-dl { margin: 1em 0; }
.kb-dl dt { font-weight: 650; margin-top: .8em; }
.kb-dl dd { margin: 0 0 .2em; color: var(--fg-soft); }
.kb-ext { font-size: .75em; opacity: .7; }

.kb-table-wrap { overflow-x: auto; margin: 1.3em 0; }
.kb-table { border-collapse: collapse; width: 100%; font-size: .93rem; }
.kb-table th, .kb-table td { border: 1px solid var(--line); padding: 9px 13px; text-align: left; vertical-align: top; }
.kb-table th { background: var(--bg-soft); font-weight: 650; }

.kb-callout { margin: 1.3em 0; padding: 14px 18px; border-radius: var(--radius-sm); border: 1px solid var(--line); background: var(--bg-soft); font-size: .95rem; }
.kb-callout-info { border-left: 4px solid var(--brand); }
.kb-callout-ok   { border-left: 4px solid var(--brand-2); }
.kb-callout-warn { border-left: 4px solid #e08a1e; }
.kb-callout-todo { border-left: 4px solid var(--accent); background: color-mix(in srgb, var(--accent) 10%, var(--bg-soft)); }

.kb-embed { margin: 1.6em 0; }
.kb-embed figcaption { font-size: .85rem; color: var(--fg-soft); margin-top: 8px; text-align: center; }
.kb-video-frame { position: relative; padding-top: 56.25%; border-radius: var(--radius); overflow: hidden; background: #000; }
.kb-video-frame iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.kb-figure img { border-radius: var(--radius); border: 1px solid var(--line); display: block; margin: 0 auto; }
.kb-pdf { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.kb-pdf-bar { display: flex; align-items: center; gap: 10px; padding: 10px 14px; background: var(--bg-soft); border-bottom: 1px solid var(--line); font-size: .9rem; }
.kb-pdf-bar a { margin-left: auto; }
.kb-pdf-object { width: 100%; height: 620px; display: block; background: var(--bg-sink); }
.kb-badge { font-size: .68rem; font-weight: 700; letter-spacing: .05em; background: var(--brand); color: #fff; padding: 2px 7px; border-radius: 4px; }
.kb-file-card {
  display: flex; align-items: center; gap: 12px; padding: 12px 16px; margin: 1em 0;
  border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--bg-soft); color: inherit;
}
.kb-file-card:hover { text-decoration: none; border-color: var(--brand); }
.kb-file-name { font-weight: 550; }
.kb-file-dl { margin-left: auto; color: var(--fg-soft); }

.sources { margin-top: 2.4em; padding-top: 20px; border-top: 1px solid var(--line); }
.sources h2 { font-size: 1rem; text-transform: uppercase; letter-spacing: .07em; color: var(--fg-soft); }
.sources ul { padding-left: 1.1em; font-size: .93rem; }
.tags-row { margin-top: 22px; }

/* ------------------------------------------------------------- structure */
.structure-block { padding: 22px 0; border-bottom: 1px solid var(--line); }
.structure-block h2 { display: flex; align-items: center; gap: 10px; }
.structure-block h3 { margin-top: 1.1em; font-size: .98rem; color: var(--fg-soft); }
.structure-list { list-style: none; padding: 0; margin: 8px 0 0; display: grid; gap: 4px; grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); }
.structure-list li { display: flex; align-items: center; gap: 8px; font-size: .94rem; padding: 3px 0; }

/* ---------------------------------------------------------------- footer */
.site-foot { border-top: 1px solid var(--line); background: var(--bg-soft); margin-top: 40px; padding: 38px 0 22px; font-size: .92rem; }
.foot-grid { display: grid; gap: 26px; grid-template-columns: 2fr 1fr 1fr 1fr; }
.foot-grid strong { display: block; margin-bottom: 8px; }
.foot-grid .plain li { padding: 2px 0; }
.foot-grid .muted { font-size: .88rem; }
.foot-bottom { padding-top: 22px; margin-top: 22px; border-top: 1px solid var(--line); font-size: .84rem; }

/* --------------------------------------------------------------- buttons */
.kb-btn {
  display: inline-block; padding: 9px 18px; border-radius: var(--radius-sm); border: 1px solid transparent;
  background: var(--brand); color: #fff; font: inherit; font-weight: 550; cursor: pointer; text-align: center;
}
.kb-btn:hover { background: var(--brand-ink); text-decoration: none; }
.kb-btn-sm { padding: 3px 10px; font-size: .84rem; }
.kb-btn-ghost { background: var(--bg); color: var(--fg); border-color: var(--line); }
.kb-btn-ghost:hover { background: var(--bg-soft); color: var(--fg); }
.kb-btn-danger { background: var(--danger); }
.kb-btn-danger:hover { background: #96271b; }

/* -------------------------------------------------------------- responsive */
@media (max-width: 900px) {
  .page-grid { grid-template-columns: 1fr; gap: 24px; }
  .side { position: static; order: 2; border-top: 1px solid var(--line); padding-top: 18px; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .nav-toggle { display: block; }
  .head-nav { display: none; width: 100%; flex-direction: column; align-items: stretch; gap: 10px; padding: 12px 0 16px; }
  .head-nav.is-open { display: flex; }
  .search-mini input { width: 100%; }
  .lang-switch, .admin-link { text-align: center; }
  .hero { padding: 38px 0 32px; }
  .search-big { flex-direction: column; }
  .foot-grid { grid-template-columns: 1fr; }
}