/* === Zmienne i baza kolorów === */
:root {
  --container: 980px;
  --radius: 14px;
  --gap: 16px;
  --bg: #ffffff;
  --fg: #0f172a;         /* slate-900 */
  --muted: #475569;      /* slate-600 */
  --border: #e5e7eb;     /* gray-200 */
  --card: #ffffff;
  --accent: #2563eb;     /* blue-600 */
  --accent-contrast: #ffffff;
  --hover-bg: rgba(0,0,0,0.05);
}
html.dark {
  --bg: #0b1220;         /* ciemne tło */
  --fg: #e5e7eb;         /* gray-200 */
  --muted: #94a3b8;      /* slate-400 */
  --border: #233048;     /* ciemna linia */
  --card: #121a2c;       /* panel/karta */
  --accent: #60a5fa;     /* blue-400 */
  --accent-contrast: #0b1220;
  --hover-bg-dark: rgba(255,255,255,0.06);
}

/* === Reset/normalizacja skrócona === */
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.6 system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden; /* zapobiega poziomemu scrollowi na mobile */
}
img { max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 2px; }

/* === Kontener i ogólny layout === */
.container {
  max-width: var(--container);
  padding: 0 16px;
  margin: 0 auto;
  width: 100%;
}
.content { padding: 24px 0; }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: 0 1px 2px rgba(0,0,0,0.04);
}

/* === Nagłówek/Menu === */
.site-header { padding-top: 16px; }
.site-header .nav {
  display: flex;
  align-items: center;
  gap: 16px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 10px;
}
.site-header .nav .spacer { flex: 1 1 auto; }
.site-header .brand {
  font-weight: 800;
  letter-spacing: -0.2px;
  white-space: nowrap;
}
.site-header .link {
  padding: 6px 8px;
  border-radius: 8px;
  text-decoration: none;
}
.site-header .link:hover { background: var(--hover-bg); }
html.dark .site-header .link:hover { background: var(--hover-bg-dark); }
.site-header .link.active {
  font-weight: 600;
  outline: 1px solid var(--border);
}

/* === Stopka === */
.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 24px;
  padding: 16px 0;
  color: var(--muted);
  font-size: 14px;
}

/* === Typografia prostych treści === */
h1,h2,h3 { line-height: 1.25; margin: 0.6em 0 0.4em; }
h1 { font-size: 28px; }
h2 { font-size: 22px; }
h3 { font-size: 18px; }
p { margin: 0.6em 0; }
ul { margin: 0.6em 0; padding-left: 1.2em; }
.prose p { color: var(--fg); }
.prose p.muted { color: var(--muted); }

/* === Przełącznik wersji strony === */
.theme-switcher {
  text-align: center;
  font-size: 14px;
  margin: 8px 0 0;
}
.theme-switcher .label {
  font-weight: 600;
  margin-bottom: 4px;
  text-transform: lowercase;
  letter-spacing: 0.2px;
}
.theme-switcher .options {
  display: flex;
  justify-content: center;
  gap: 12px;
}
.theme-switcher .option {
  cursor: pointer;
  padding: 4px 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: transparent;
  color: inherit;
}
.theme-switcher .option:hover {
  background: var(--hover-bg);
}
.theme-switcher .option.active {
  font-weight: 700;
  box-shadow: 0 1px 0 rgba(0,0,0,0.06);
}

/* Tryb ciemny — kontrast opcji */
html.dark .theme-switcher .option {
  color: #fff;
  border-color: rgba(255,255,255,0.3);
}
html.dark .theme-switcher .option:hover {
  background: var(--hover-bg-dark);
}
html.dark .theme-switcher .option.active {
  border-color: rgba(255,255,255,0.6);
  background: rgba(255,255,255,0.1);
}

/* === MOBILE MENU FIX === */
@media (max-width: 640px) {
  .site-header .nav {
    flex-wrap: wrap;             /* linki mogą zejść do 2. wiersza */
    gap: 8px 12px;               /* mniejszy odstęp na mobile */
  }
  .site-header .nav .spacer {
    flex-basis: 100%;            /* wymuś nowy wiersz po brandzie */
    height: 0;
  }
  .site-header .brand {
    font-size: 18px;
  }
  .site-header .link {
    padding: 8px 10px;
  }
  /* Dwa linki w wierszu (2 kolumny) */
  .site-header .nav a.link {
    flex: 1 1 calc(50% - 12px);
    text-align: center;
  }
}

@media (max-width: 360px) {
  /* Na bardzo wąskich ekranach — 1 link na wiersz */
  .site-header .nav a.link {
    flex: 1 1 100%;
  }
}
/* ——— koniec MOBILE MENU FIX ——— */

/* === Utility === */
.center { text-align: center; }
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 12px; }
.mt-4 { margin-top: 16px; }
.space-y > * + * { margin-top: var(--gap); }