/* ====== Base / Theme (spójne z Historia/Kontakt) ====== */
*{ box-sizing:border-box; }
html:focus-within{ scroll-behavior:smooth; }

/* Skala fontu sterowana JS */
html{ font-size: calc(16px * var(--font-scale, 1)); }

:root{
  --bg:#0b1020;
  --surface: rgba(255,255,255,.06);
  --surface-2: rgba(255,255,255,.09);
  --border: rgba(255,255,255,.14);
  --text: rgba(255,255,255,.92);
  --muted: rgba(255,255,255,.7);
  --brand:#7c3aed;
  --brand-2:#22c55e;
  --shadow: 0 12px 30px rgba(0,0,0,.3);
  --radius: 18px;
  --radius-2: 26px;
  --max: 1200px;
}

@media (prefers-color-scheme: light){
  :root{
    --bg:#f6f7fb;
    --surface: rgba(10,18,32,.04);
    --surface-2: rgba(10,18,32,.06);
    --border: rgba(10,18,32,.1);
    --text: rgba(10,18,32,.92);
    --muted: rgba(10,18,32,.66);
    --shadow: 0 18px 40px rgba(10,18,32,.12);
  }
}

[data-theme="dark"]{
  --bg:#0b1020;
  --surface: rgba(255,255,255,.06);
  --surface-2: rgba(255,255,255,.09);
  --border: rgba(255,255,255,.14);
  --text: rgba(255,255,255,.92);
  --muted: rgba(255,255,255,.7);
  --shadow: 0 12px 30px rgba(0,0,0,.3);
}
[data-theme="light"]{
  --bg:#f6f7fb;
  --surface: rgba(10,18,32,.04);
  --surface-2: rgba(10,18,32,.06);
  --border: rgba(10,18,32,.1);
  --text: rgba(10,18,32,.92);
  --muted: rgba(10,18,32,.66);
  --shadow: 0 18px 40px rgba(10,18,32,.12);
}

body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Noto Sans", "Liberation Sans", sans-serif;
  line-height:1.6;
  color: var(--text);
  background:
    radial-gradient(1200px 700px at 20% -10%, rgba(124,58,237,.35), transparent 55%),
    radial-gradient(900px 600px at 80% 0%, rgba(34,197,94,.22), transparent 50%),
    radial-gradient(700px 500px at 50% 110%, rgba(59,130,246,.18), transparent 55%),
    var(--bg);
  min-height:100dvh;
}

img{ max-width:100%; display:block; }
a{ color: inherit; }

.muted{ color: var(--muted); }

.skip-link{
  position:absolute;
  left:10px; top:10px;
  transform: translateY(-140%);
  background: var(--surface-2);
  border:1px solid var(--border);
  padding:10px 12px;
  border-radius:12px;
  text-decoration:none;
  box-shadow: var(--shadow);
}
.skip-link:focus{
  transform: translateY(0);
  outline: 2px solid rgba(124,58,237,.6);
}

/* ===== Header ===== */
.header{
  position: sticky;
  top:0;
  z-index:50;
  backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  border-bottom:1px solid var(--border);
}
.header__bar{
  max-width: var(--max);
  margin:0 auto;
  padding:14px 16px;
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap:12px;
}
.header__actions{
  display:flex;
  gap:10px;
  align-items:center;
}

/* Brand */
.brand{
  display:flex;
  gap:12px;
  align-items:center;
  min-width:220px;
  text-decoration:none;
}
.brand__mark{
  width:44px; height:44px;
  border-radius:14px;
  display:grid;
  place-items:center;
  font-weight:800;
  background: linear-gradient(135deg, rgba(124,58,237,.95), rgba(34,197,94,.85));
  box-shadow: 0 12px 25px rgba(124,58,237,.25);
}
.brand__title{ font-weight:800; letter-spacing:.2px; }
.brand__sub{ display:block; color: var(--muted); font-size:13px; margin-top:-2px; }

/* Buttons */
.icon-btn, .menu-btn{
  border:1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius:14px;
  padding:10px 12px;
  display:inline-flex;
  align-items:center;
  gap:10px;
  cursor:pointer;
  box-shadow: 0 10px 25px rgba(0,0,0,.08);
}
.icon-btn:hover,.menu-btn:hover{ background: var(--surface-2); }
.icon-btn:focus-visible,.menu-btn:focus-visible{
  outline:2px solid rgba(124,58,237,.6);
  outline-offset:2px;
}
.icon-btn--font{
  font-weight:950;
  min-width:44px;
  justify-content:center;
  letter-spacing:.2px;
}
.menu-btn__label{ font-weight:700; font-size:14px; }
.menu-btn__lines{
  width:18px; height:12px;
  display:inline-block;
  position:relative;
}
.menu-btn__lines::before,.menu-btn__lines::after{
  content:"";
  position:absolute; left:0; right:0;
  height:2px; border-radius:2px;
  background: currentColor;
}
.menu-btn__lines::before{ top:0; }
.menu-btn__lines::after{ bottom:0; }

/* Top nav */
.topnav{
  max-width: var(--max);
  margin:0 auto;
  padding: 0 16px 14px;
  display:none;
  gap:8px;
  flex-wrap:wrap;
}
.topnav.is-open{ display:flex; }
.topnav__link{
  text-decoration:none;
  padding:10px 12px;
  border-radius:999px;
  background: var(--surface);
  border:1px solid var(--border);
  font-weight:700;
  font-size:14px;
}
.topnav__link:hover{ background: var(--surface-2); }
.topnav__link.is-active{
  background: color-mix(in srgb, var(--brand) 22%, var(--surface));
  border-color: color-mix(in srgb, var(--brand) 35%, var(--border));
}

/* ===== Layout ===== */
.layout{
  max-width: var(--max);
  margin:0 auto;
  padding:16px;
  display:grid;
  grid-template-columns: 320px 1fr;
  gap:16px;
}
@media (max-width:980px){
  .layout{ grid-template-columns: 1fr; }
  .sidebar{ order:2; }
  .content{ order:1; }
}

/* Panels */
.panel{
  border:1px solid var(--border);
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow:hidden;
}
.panel--soft{ background: color-mix(in srgb, var(--surface) 70%, transparent); }
.panel__head{
  padding:14px 14px 10px;
  border-bottom:1px solid var(--border);
}
.panel__title{ font-weight:800; }
.panel__meta{ color: var(--muted); font-size:13px; margin-top:2px; }

/* Sidebar groups (podmenu) */
.sidegroups{ padding:10px; display:grid; gap:10px; }
.sgrp{
  border:1px solid var(--border);
  background: color-mix(in srgb, var(--surface) 78%, transparent);
  border-radius:16px;
  overflow: clip;
}
.sgrp__sum{
  list-style:none;
  cursor:pointer;
  padding:12px 12px;
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap:10px;
  font-weight:900;
}
.sgrp__sum::-webkit-details-marker{ display:none; }
.sgrp__title{ font-size:13px; letter-spacing:.2px; }
.sgrp__chev{
  width:18px; height:18px;
  border-radius:999px;
  border:1px solid var(--border);
  display:grid;
  place-items:center;
  position:relative;
}
.sgrp__chev::before{
  content:"";
  width:8px; height:8px;
  border-right:2px solid currentColor;
  border-bottom:2px solid currentColor;
  transform: rotate(45deg);
  margin-top:-2px;
}
.sgrp[open] .sgrp__chev::before{
  transform: rotate(-135deg);
  margin-top:2px;
}
.sgrp__content{
  padding:6px 8px 10px;
  display:grid;
  gap:6px;
  border-top:1px solid var(--border);
}
.sidenav__link{
  text-decoration:none;
  padding:10px 10px;
  border-radius:14px;
  border:1px solid transparent;
  background: transparent;
  font-weight:800;
  font-size:14px;
}
.sidenav__link:hover{
  background: var(--surface-2);
  border-color: var(--border);
}
.sidebar__tip{
  padding: 12px 14px 14px;
  margin:0;
}

/* Hero */
.hero{
  display:grid;
  grid-template-columns: 1fr 320px;
  gap:14px;
  margin-bottom:16px;
}
@media (max-width:980px){ .hero{ grid-template-columns: 1fr; } }

.hero__text{
  border:1px solid var(--border);
  background: color-mix(in srgb, var(--surface) 75%, transparent);
  border-radius: var(--radius-2);
  box-shadow: var(--shadow);
  padding:18px;
}
.hero h1{
  margin:0 0 6px;
  font-size: clamp(22px, 2vw + 14px, 34px);
  letter-spacing:.2px;
}
.lead{ margin:0 0 12px; color: var(--muted); }

.hero__card{
  border:1px solid var(--border);
  background: linear-gradient(135deg, rgba(124,58,237,.18), rgba(34,197,94,.1));
  border-radius: var(--radius-2);
  box-shadow: var(--shadow);
  padding:16px;
  display:grid;
  gap:10px;
  align-content:start;
}
.badge{
  border:1px solid color-mix(in srgb, var(--brand) 35%, var(--border));
  background: color-mix(in srgb, var(--brand) 18%, transparent);
  padding:6px 10px;
  border-radius:999px;
  font-size:12px;
  font-weight:900;
  white-space:nowrap;
  width: fit-content;
}
.stat{
  border:1px solid color-mix(in srgb, var(--border) 70%, transparent);
  background: color-mix(in srgb, var(--surface) 72%, transparent);
  border-radius:16px;
  padding:10px 12px;
}
.stat__label{ color: var(--muted); font-size:12px; }
.stat__value{ font-weight:900; }

/* Chips */
.chips{
  display:flex;
  gap:8px;
  flex-wrap:wrap;
  margin-top: 10px;
}
.chip{
  border:1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius:999px;
  padding:8px 10px;
  font-weight:900;
  font-size:13px;
  text-decoration:none;
}
.chip:hover{ background: var(--surface-2); }

/* Buttons */
.btn{
  padding:12px 14px;
  border-radius:14px;
  border:1px solid var(--border);
  background: color-mix(in srgb, var(--brand) 22%, var(--surface));
  color: var(--text);
  font-weight:900;
  cursor:pointer;
  text-decoration:none;
  display:inline-flex;
  align-items:center;
  justify-content:center;
}
.btn:hover{ background: color-mix(in srgb, var(--brand) 28%, var(--surface-2)); }
.btn--ghost{ background: var(--surface); }
.btn--ghost:hover{ background: var(--surface-2); }

/* Accordion */
.accordion{ display:grid; gap:12px; }
.acc{
  border:1px solid var(--border);
  background: var(--surface);
  border-radius: var(--radius-2);
  box-shadow: var(--shadow);
  overflow: clip;
}
.acc__summary{
  list-style:none;
  cursor:pointer;
  padding:14px 16px;
  display:grid;
  gap:4px;
  border-bottom:1px solid var(--border);
}
.acc__summary::-webkit-details-marker{ display:none; }
.acc__title{ font-weight:950; letter-spacing:.2px; }
.acc__hint{ color: var(--muted); font-size:13px; }
.acc__content{ padding:16px; }

/* Prose */
.prose a{ text-decoration: underline; text-underline-offset: 2px; }
.prose .h2{ margin:0 0 10px; font-size:18px; }
.prose .h3{ margin:14px 0 8px; font-size:16px; }
.list{
  margin: 8px 0 12px;
  padding-left: 18px;
}
.list li{ margin: 6px 0; }

.info-grid{
  margin: 12px 0 10px;
  display:grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap:10px;
}
@media (max-width:740px){ .info-grid{ grid-template-columns: 1fr; } }
.info{
  border:1px solid color-mix(in srgb, var(--border) 70%, transparent);
  background: color-mix(in srgb, var(--surface-2) 70%, transparent);
  border-radius:18px;
  padding:12px 12px;
}
.info__k{ color: var(--muted); font-size:12px; font-weight:900; }
.info__v{ font-weight:950; margin-top:2px; }

.callout{
  border:1px solid color-mix(in srgb, var(--brand) 35%, var(--border));
  background: color-mix(in srgb, var(--brand) 14%, transparent);
  border-radius:18px;
  padding:12px 12px;
  margin: 10px 0 12px;
}
.callout__title{ font-weight:950; }
.callout__text{ margin-top:6px; }

.kbd-grid{
  margin-top: 12px;
  display:grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap:10px;
}
@media (max-width:740px){ .kbd-grid{ grid-template-columns: 1fr; } }
.kbd-card{
  border:1px solid color-mix(in srgb, var(--border) 70%, transparent);
  background: color-mix(in srgb, var(--surface-2) 70%, transparent);
  border-radius:18px;
  padding:12px 12px;
}
.kbd-card__k{ font-weight:950; }
.kbd-card__t{ color: var(--muted); font-weight:900; font-size: 13px; margin-top:6px; }

kbd{
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  border:1px solid var(--border);
  background: var(--surface);
  padding: 2px 6px;
  border-radius: 8px;
  box-shadow: 0 6px 14px rgba(0,0,0,.12);
}

.download{
  text-decoration:none;
  border:1px solid color-mix(in srgb, var(--brand-2) 28%, var(--border));
  background: color-mix(in srgb, var(--brand-2) 12%, transparent);
  border-radius: 18px;
  padding: 12px 12px;
  display:flex;
  gap: 12px;
  align-items:flex-start;
}
.download:hover{
  background: color-mix(in srgb, var(--brand-2) 18%, transparent);
}
.download__icon{
  width: 36px;
  height: 36px;
  border-radius: 14px;
  display:grid;
  place-items:center;
  font-weight: 950;
  border:1px solid color-mix(in srgb, var(--border) 70%, transparent);
  background: color-mix(in srgb, var(--surface) 80%, transparent);
}
.download__hint{
  display:block;
  margin-top: 4px;
  font-size: 13px;
}

/* Footer */
.footer{
  margin: 18px 0 10px;
  border:1px solid var(--border);
  background: var(--surface);
  border-radius: var(--radius-2);
  box-shadow: var(--shadow);
  padding: 14px 16px;
}
.footer__grid{
  display:flex;
  gap:14px;
  align-items:center;
  justify-content: space-between;
  flex-wrap: wrap;
}
.footer__title{ font-weight:950; }
.footer__links{ display:flex; gap:12px; flex-wrap:wrap; }
.footer__links a{
  color: var(--muted);
  text-decoration:none;
  font-weight:900;
}
.footer__links a:hover{ color: var(--text); text-decoration: underline; }

/* Cookie */
.cookie{
  position: fixed;
  left: 16px;
  right: 16px;
  bottom: 16px;
  max-width: var(--max);
  margin: 0 auto;
  border:1px solid var(--border);
  background: color-mix(in srgb, var(--surface) 88%, var(--bg));
  border-radius: var(--radius-2);
  box-shadow: var(--shadow);
  padding: 12px 12px;
  display:flex;
  gap:12px;
  align-items:center;
  justify-content: space-between;
}
.cookie__text{ display:grid; gap:4px; }
.cookie__text a{ color: var(--muted); font-weight:900; }
.cookie__text a:hover{ color: var(--text); }
.cookie__actions{ display:flex; gap:10px; }

/* To top */
.to-top{
  position: fixed;
  right: 16px;
  bottom: 86px;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  cursor:pointer;
  box-shadow: var(--shadow);
  opacity:0;
  pointer-events:none;
  transition: opacity .2s ease;
}
.to-top.is-visible{ opacity:1; pointer-events:auto; }
.to-top:hover{ background: var(--surface-2); }

/* SR only */
.sr-only{
  position:absolute !important;
  width:1px; height:1px;
  padding:0; margin:-1px;
  overflow:hidden;
  clip: rect(0,0,0,0);
  white-space:nowrap;
  border:0;
}