/*
 * Biblio — biblio.brailcom.org
 * Sdílené styly pro homepage a privacy policy (CS + EN).
 * Jeden CSS soubor, žádné externí závislosti, dark mode přes prefers-color-scheme.
 */

:root {
    --color-bg: #ffffff;
    --color-text: #1a1a1a;
    --color-muted: #555555;
    --color-link: #0057a8;
    --color-link-hover: #003c80;
    --color-accent: #00a3b4;
    --color-divider: #e0e0e0;
    --color-lang-active-bg: #00a3b4;
    --color-lang-active-text: #ffffff;
    --max-width: 720px;
    --line-height: 1.6;
}

@media (prefers-color-scheme: dark) {
    :root {
        --color-bg: #121212;
        --color-text: #f0f0f0;
        --color-muted: #c0c0c0;
        --color-link: #6cb3ff;
        --color-link-hover: #a0d0ff;
        --color-divider: #333333;
    }
}

* { box-sizing: border-box; }

body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 18px;
    line-height: var(--line-height);
    color: var(--color-text);
    background-color: var(--color-bg);
}

.skip-to-main {
    position: absolute;
    left: -9999px;
    top: 0;
}
.skip-to-main:focus {
    left: 1rem;
    top: 1rem;
    padding: 0.75rem 1.25rem;
    background-color: var(--color-accent);
    color: #fff;
    font-weight: bold;
    text-decoration: none;
    border-radius: 4px;
    z-index: 1000;
}

.lang-nav {
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
    padding: 1rem 1.5rem 0;
    max-width: var(--max-width);
    margin: 0 auto;
    font-size: 0.95rem;
}
.lang-nav a, .lang-nav span {
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    text-decoration: none;
    border: 1px solid var(--color-divider);
}
.lang-nav a { color: var(--color-link); }
.lang-nav a:hover { background-color: var(--color-divider); }
.lang-nav span[aria-current="true"] {
    background-color: var(--color-lang-active-bg);
    color: var(--color-lang-active-text);
    border-color: var(--color-lang-active-bg);
    font-weight: 600;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 1rem 1.5rem 2rem;
}

header.page-header {
    text-align: center;
    padding-top: 1.5rem;
}

.logo {
    width: 128px;
    height: 128px;
    border-radius: 28px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

h1 {
    font-size: 2.5rem;
    margin: 1rem 0 0.5rem;
    color: var(--color-text);
}

.tagline {
    font-size: 1.2rem;
    color: var(--color-muted);
    margin: 0 0 2rem;
}

h2 {
    font-size: 1.5rem;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--color-accent);
}

h3 {
    font-size: 1.15rem;
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
}

p { margin: 0 0 1rem; }

ul { padding-left: 1.5rem; }
li { margin-bottom: 0.5rem; }

a {
    color: var(--color-link);
    text-decoration: underline;
    text-underline-offset: 2px;
}
a:hover { color: var(--color-link-hover); }
a:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 3px;
    border-radius: 2px;
}

.badge-list {
    list-style: none;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 1rem 0 0;
}
.badge-list li {
    background-color: var(--color-divider);
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.9rem;
    margin: 0;
}

.meta-note {
    font-size: 0.95rem;
    color: var(--color-muted);
    font-style: italic;
    margin-bottom: 1.5rem;
}

address {
    font-style: normal;
    margin: 0.5rem 0 1rem;
    padding: 0.75rem 1rem;
    background-color: var(--color-divider);
    border-radius: 8px;
    display: inline-block;
}

blockquote {
    margin: 1rem 0;
    padding: 0.75rem 1.25rem;
    border-left: 4px solid var(--color-accent);
    background-color: var(--color-divider);
    border-radius: 0 6px 6px 0;
}
blockquote p:last-child { margin-bottom: 0; }

footer {
    margin-top: 3rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--color-divider);
    font-size: 0.9rem;
    color: var(--color-muted);
}
footer p { margin: 0 0 0.5rem; }