:root {
  --color-bg: #ffffff;
  --color-text: #1a1a1a;
  --color-accent: #2563eb;
  --color-muted: #6b7280;
  --color-header: #111827;
  --max-width: 900px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
}

/* ---- Společná hlavička (vkládá se přes assets/site.js) ---- */
.site-header {
  background: var(--color-header);
  color: #fff;
}

.site-header__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.site-header__logo {
  font-weight: 700;
  font-size: 1.25rem;
  color: #fff;
  text-decoration: none;
}

.site-nav {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.site-nav a {
  color: #d1d5db;
  text-decoration: none;
  font-size: 0.95rem;
}

.site-nav a:hover {
  color: #fff;
}

.site-nav a.is-active {
  color: #fff;
  font-weight: 600;
}

/* ---- Obsah ---- */
main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2.5rem 1.25rem;
}

h1 {
  margin-top: 0;
}

a {
  color: var(--color-accent);
}

.site-footer {
  max-width: var(--max-width);
  margin: 2rem auto 3rem;
  padding: 1.5rem 1.25rem 0;
  border-top: 1px solid #e5e7eb;
  color: var(--color-muted);
  font-size: 0.875rem;
}