:root {
  --outer: #e9edf4;
  --bg: #ffffff;
  --ink: #1c2230;
  --muted: #5c667a;
  --line: #c3cbdb;
  --blue: #1f4fa8;      /* pasek menu, nagłówki */
  --link: #1a4fb8;
  --visited: #5a3fa0;
  --hover-bg: #dfe9ff;
  --zebra: #f3f6fb;
  --on-blue: #ffffff;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) { --outer:#0b0f18; --bg:#141a26; --ink:#dde3f0; --muted:#97a2ba; --line:#2b3550; --blue:#27468a; --link:#86aaff; --visited:#b39cf0; --hover-bg:#1f2d52; --zebra:#182030; }
}
:root[data-theme="dark"] { --outer:#0b0f18; --bg:#141a26; --ink:#dde3f0; --muted:#97a2ba; --line:#2b3550; --blue:#27468a; --link:#86aaff; --visited:#b39cf0; --hover-bg:#1f2d52; --zebra:#182030; }

* { box-sizing: border-box; }
body { margin: 0; padding: 16px 8px; font: 14px/1.5 Verdana, Tahoma, Geneva, sans-serif; color: var(--ink); background: var(--outer); }
#page { max-width: 1240px; margin: 0 auto; background: var(--bg); border: 1px solid var(--line); }
a { color: var(--link); }
a:visited { color: var(--visited); }
a:hover { background: var(--hover-bg); }
code { font-family: "Courier New", monospace; font-size: 13px; }

#head { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 14px 20px; border-bottom: 1px solid var(--line); }
#head a:hover { background: none; }
#head img { display: block; width: 100%; max-width: 380px; height: auto; }
#theme { flex: none; padding: 4px 10px; font: 12px Verdana, Tahoma, sans-serif; color: var(--link); background: none; border: 1px solid var(--line); cursor: pointer; }
#theme:hover { background: var(--hover-bg); }

#menu { display: flex; flex-wrap: wrap; margin: 0; padding: 0; list-style: none; background: var(--blue); }
#menu li { border-right: 1px solid rgba(255,255,255,.25); }
#menu a, #menu a:visited { display: block; padding: 6px 14px; font-size: 13px; font-weight: bold; color: var(--on-blue); text-decoration: none; }
#menu a:hover { background: rgba(255,255,255,.18); }

#cols { display: flex; align-items: flex-start; }
#side { position: sticky; top: 0; flex: 0 0 250px; padding: 16px 18px; border-right: 1px solid var(--line); font-size: 13px; }
#side h3 { margin: 0 0 8px; padding-bottom: 2px; font-size: 14px; color: var(--blue); border-bottom: 1px solid var(--line); }
#side p { margin: 0 0 12px; }
.small { color: var(--muted); font-size: 12px; }
#main { flex: 1; min-width: 0; padding: 16px 28px 24px; }
#main > :first-child { margin-top: 0; }

h2 { margin: 24px 0 8px; padding-bottom: 2px; font-size: 17px; color: var(--blue); border-bottom: 1px solid var(--line); }
html[data-theme="dark"] h2, html[data-theme="dark"] #side h3 { color: var(--link); }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) h2, :root:not([data-theme="light"]) #side h3 { color: var(--link); } }

.news { margin: 0; padding-left: 18px; }
.news li { margin-bottom: 6px; }
ol { padding-left: 24px; }
li { margin-bottom: 4px; }

table { width: 100%; border-collapse: collapse; }
th, td { padding: 5px 8px; text-align: left; vertical-align: top; border: 1px solid var(--line); }
th { width: 150px; white-space: nowrap; }
tr:nth-child(even) { background: var(--zebra); }

#foot { padding: 10px 16px; text-align: center; font-size: 12px; color: var(--muted); border-top: 1px solid var(--line); }

@media (min-width: 1000px) {
  body { padding: 24px 16px; font-size: 15px; }
  #menu a, #menu a:visited { padding: 9px 18px; font-size: 14px; }
  #side { font-size: 14px; }
  h2 { font-size: 19px; }
  code { font-size: 14px; }
}

@media (max-width: 640px) {
  body { padding: 0; font-size: 15px; line-height: 1.6; }
  #page { border: 0; }
  #head { padding: 12px 16px; }
  #head img { max-width: 220px; }
  #theme { padding: 8px 10px; }
  #menu { display: grid; grid-template-columns: repeat(3, 1fr); }
  #menu li { margin: 0; border-right: 0; border-bottom: 1px solid rgba(255,255,255,.2); text-align: center; }
  #menu li:not(:nth-child(3n)) { border-right: 1px solid rgba(255,255,255,.2); }
  #menu a, #menu a:visited { padding: 12px 4px; }
  #cols { flex-direction: column; align-items: stretch; }
  #side { position: static; flex: none; width: 100%; padding: 14px 16px; border-right: 0; border-bottom: 1px solid var(--line); font-size: 15px; }
  #side a, #main a { display: inline-block; padding: 4px 0; }
  #main { padding: 4px 16px 20px; }
  h2 { font-size: 18px; scroll-margin-top: 8px; }
  ol { padding-left: 20px; }
  li { margin-bottom: 8px; }
  table, tbody, tr, th, td { display: block; width: auto; }
  tr { margin-bottom: 8px; border: 1px solid var(--line); }
  th { white-space: normal; border: 0; border-bottom: 1px solid var(--line); background: var(--zebra); }
  td { border: 0; }
  tr:nth-child(even) { background: none; }
  code { word-break: break-all; }
}