/* Karo website. Copyright 2026 hubileg (Hubert Jankowski) */
:root {
  --bg: #f6f6f4; --fg: #141414; --muted: #5c5c5a; --card: #ffffff; --line: #e2e2de; --accent: #141414; --accent-fg: #ffffff;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0e0e0e; --fg: #f1f1ef; --muted: #a3a3a0; --card: #181818; --line: #2a2a28; --accent: #f1f1ef; --accent-fg: #0e0e0e; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; }
a { color: inherit; text-underline-offset: 3px; }
header.site { display: flex; align-items: center; justify-content: space-between; gap: 16px; max-width: 920px; margin: 0 auto; padding: 20px 24px; }
header.site .brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 20px; text-decoration: none; }
header.site .brand img { width: 36px; height: 36px; border-radius: 9px; }
header.site nav { display: flex; flex-wrap: wrap; gap: 4px 18px; font-size: 15px; }
header.site nav a { text-decoration: none; color: var(--muted); }
header.site nav a:hover, header.site nav a[aria-current] { color: var(--fg); }
.lang-switch { border: 1px solid var(--line); background: var(--card); color: var(--fg); border-radius: 999px; padding: 4px 10px; font: inherit; font-size: 14px; cursor: pointer; }
main { max-width: 920px; margin: 0 auto; padding: 8px 24px 64px; }
.hero { padding: 56px 0 32px; }
.hero h1 { font-size: clamp(34px, 6vw, 56px); line-height: 1.08; letter-spacing: -0.02em; margin: 0 0 16px; }
.hero p { font-size: 19px; color: var(--muted); max-width: 640px; margin: 0 0 28px; }
.button { display: inline-block; background: var(--accent); color: var(--accent-fg); padding: 12px 22px; border-radius: 12px; text-decoration: none; font-weight: 600; }
.button.secondary { background: transparent; color: var(--fg); border: 1px solid var(--line); }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 16px; margin: 32px 0; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 20px 22px; }
.card h3 { margin: 0 0 6px; font-size: 17px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
h1 { font-size: 34px; letter-spacing: -0.01em; margin: 32px 0 8px; }
h2 { font-size: 22px; margin: 36px 0 8px; scroll-margin-top: 16px; }
h3 { font-size: 17px; margin: 24px 0 4px; }
.lead { color: var(--muted); font-size: 18px; margin-top: 0; }
details { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 14px 18px; margin: 10px 0; }
details summary { cursor: pointer; font-weight: 600; }
details[open] summary { margin-bottom: 8px; }
.note { border-left: 3px solid var(--fg); padding: 2px 0 2px 14px; color: var(--muted); }
footer.site { max-width: 920px; margin: 0 auto; padding: 24px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; display: flex; flex-wrap: wrap; gap: 8px 20px; }
footer.site a { color: var(--muted); }
[data-lang]:not(.active) { display: none !important; }
.center { text-align: center; }
.pow { max-width: 460px; margin: 48px auto; text-align: center; }
.pow progress { width: 100%; height: 10px; margin: 18px 0; accent-color: var(--fg); }