/* ===========================================================================
   custom.css – projektove upravy nad Bootstrap 5
   (migrovane z povodneho theme.2019.css + Bootstrap 4 -> 5 zaplaty)
   =========================================================================== */


/* ---------------------------------------------------------------------------
   Zakladna typografia
   --------------------------------------------------------------------------- */
body {
    font-size: 1.4rem;
}


/* ---------------------------------------------------------------------------
   Obsah generovany z Markdownu
   Responzivne obrazky riesime v CSS (nie cez JS) – aplikuje sa uz pri
   parsovani, takze nedochadza k poskoceniu rozlozenia (CLS).
   --------------------------------------------------------------------------- */
#wrap img {
    max-width: 100%;
    height: auto;
}


/* ---------------------------------------------------------------------------
   Blokove "karty" na hlavnej stranke (<div class="row link-cards">)
   Cieli len na hlavny obrazok karty = odkaz priamo v stlpci (`.col-md-4 > a > img`).
   Obrazky vnorene v texte odseku (napr. App Store / Google Play odznaky v <p>)
   sa nemenia.
   Vsetky maju rovnaku vysku; pomer stran sa zachova (object-fit), obrazok sa
   neorezava ani nedeformuje, len sa vycentruje do ramca.
   Selektor zacina #wrap, aby prebil specificitu pravidla `#wrap img` vyssie.
   --------------------------------------------------------------------------- */
#wrap .link-cards .col-md-4 > a > img {
    display: block;
    width: 100%;
    height: 300px;
    margin: 0.5rem 0 1rem;
    object-fit: contain;
}


/* ---------------------------------------------------------------------------
   Bootstrap 4 `.jumbotron` – odstranene v Bootstrap 5, tu obnovene
   --------------------------------------------------------------------------- */
.jumbotron {
    padding: 4rem 2rem;
    margin-bottom: 2rem;
    background-color: #e9ecef;
    border-radius: 0.3rem;
}

@media (max-width: 575.98px) {
    .jumbotron {
        padding: 2rem 1rem;
    }
}


/* ---------------------------------------------------------------------------
   Sticky footer
   Body je flex kontajner na celu vysku okna, <main> vyplni volny priestor
   a odtlaci footer nadol. Footer je tak vzdy na spodku obrazovky pri kratkom
   obsahu a plynulo sa posunie nizsie pri dlhom obsahu.
   --------------------------------------------------------------------------- */
html {
    height: 100%;
}

body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    padding-top: 3.5rem; /* miesto pre .navbar.fixed-top */
}

main[role="main"] {
    flex: 1 0 auto;
}

.footer {
    flex-shrink: 0;
}


/* ---------------------------------------------------------------------------
   Vzhlad footera (povodne v theme.2019.css)
   --------------------------------------------------------------------------- */
.footer {
    width: 100%;
    font-size: 1rem;
    background-color: #f5f5f5;
}

.footer aside {
    font-size: 1rem;
}

.footer div.container {
    padding-top: 1rem;
    padding-bottom: 1rem;
}

.footer-title {
    font-size: 2.5rem;
    font-weight: bold;
}

.license-icons img {
    height: 2.5rem;
    margin-top: 12px;
    margin-bottom: 8px;
}

.footer-copyright {
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
    text-align: center;
    background-color: #d5d5d5;
}

.footer-copyright p {
    margin-top: 0;
    margin-bottom: 0;
}


/* ---------------------------------------------------------------------------
   Farebne "callout" bloky (povodne v theme.2019.css)
   Pouzivane ako <section class="alert alert-info theme-alert-info"> a pod.
   --------------------------------------------------------------------------- */
.theme-alert-info {
    margin-top: 20px;
    margin-bottom: 20px;
    border-left: 5px solid #0c5460;
    color: #0c5460;
}

.theme-alert-info p:first-of-type {
    margin-bottom: 13px;
    color: #0c5460;
}

.theme-alert-danger {
    margin-top: 20px;
    margin-bottom: 20px;
    border-left: 5px solid #d9534f;
    color: #444;
}

.theme-alert-danger p:first-of-type {
    margin-bottom: 13px;
    color: #d9534f;
}

.theme-alert-lecturer {
    margin-top: 20px;
    margin-bottom: 20px;
    border-left: 5px solid #f0ad4e;
    color: #444;
}

.theme-alert-lecturer p:first-of-type {
    margin-bottom: 13px;
    color: #f0ad4e;
}


/* ---------------------------------------------------------------------------
   Tmavy rezim
   Bootstrap 5.3 prepina cez atribut <html data-bs-theme="dark"> a sam
   upravi telo, karty, alerty atd. Tu dolaďujeme len vlastne prvky, ktore
   maju natvrdo zadane svetle farby.
   --------------------------------------------------------------------------- */
[data-bs-theme="dark"] .jumbotron {
    background-color: #2b3035;
}

[data-bs-theme="dark"] .footer {
    background-color: #2b3035;
}

[data-bs-theme="dark"] .footer-copyright {
    background-color: #1b1e21;
}

[data-bs-theme="dark"] .theme-alert-info,
[data-bs-theme="dark"] .theme-alert-info p:first-of-type {
    color: #6edff6;
}

[data-bs-theme="dark"] .theme-alert-danger,
[data-bs-theme="dark"] .theme-alert-lecturer {
    color: #dee2e6;
}

/* CC/BY/NC/SA su cierne kresby – na tmavom footeri by boli neviditelne */
[data-bs-theme="dark"] .license-icons img {
    filter: invert(1);
}