/* Základní nastavení */
*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.5;
    background: #e6f4ff;           /* světle modré pozadí */
    color: #222;
}

/* Hlavička + navigace */
header {
    background: #0d47a1;            /* tmavě modrá */
    color: #fff;
    padding: 0.5rem 1rem 1rem;
    position: sticky;
    top: 0;
    z-index: 1000;
}

/* Tečky nahoře vpravo */
.wrapper {
    display: flex;
    gap: 0.4rem;
    justify-content: flex-end;
    margin-bottom: 0.5rem;
}

.dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #bbdefb;
    display: block;
}

/* Hlavní menu */
nav ul {
    list-style: none;
    margin: 0;
    padding: 0;

    display: flex;
    gap: 1rem;
    align-items: center;
    justify-content: flex-end;
    flex-wrap: wrap;
}

#navMain a {
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    padding: 0.4rem 0.8rem;
    border-radius: 999px;
    transition: background 0.2s ease, color 0.2s ease;
}

#navMain a:hover,
#navMain a:focus {
    background: #ffffff;
    color: #0d47a1;
}

/* Dropdown */
.dropdown {
    position: relative;
}

.dropdown-content {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;

    min-width: 140px;
    background: #ffffff;
    color: #0d47a1;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    border-radius: 0.5rem;
    padding: 0.5rem 0;
    z-index: 2000;
}

.dropdown-content a {
    display: block;
    color: #0d47a1;
    padding: 0.4rem 0.8rem;
    border-radius: 0;
}

.dropdown-content a:hover {
    background: #e3f2fd;
}

/* Zobrazení dropdownu na hover (desktop) */
.dropdown:hover .dropdown-content {
    display: block;
}

/* Hlavní obsah */
main {
    max-width: 900px;
    margin: 2rem auto;
    padding: 0 1rem;
    background: rgba(255, 255, 255, 0.7);
    border-radius: 1rem;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

h1, h2 {
    color: #0d47a1;
    margin-top: 0;
}

h1 {
    text-align: center;
    margin-bottom: 1.5rem;
}

section {
    margin-bottom: 2rem;
}

section ul {
    padding-left: 1.25rem;
    list-style: disc;
}

section ul li + li {
    margin-top: 0.25rem;
}

/* Odkazy v obsahu */
main a {
    color: #0d47a1;
    text-decoration: none;
}

main a:hover {
    text-decoration: underline;
}

/* Paticka */
footer {
    border-top: 1px solid #cfd8dc;
    margin-top: 3rem;
    padding: 1rem;
    text-align: center;
    font-size: 0.875rem;
    color: #607d8b;
    background: #fafafa;
}

/* Responzivita – mobilní obrazovky */
@media (max-width: 600px) {
    header {
        padding: 0.75rem;
    }

    nav ul {
        justify-content: center;
    }

    #navMain a {
        padding: 0.35rem 0.7rem;
        font-size: 0.9rem;
    }

    main {
        margin-top: 1.5rem;
        box-shadow: none;
        border-radius: 0;
    }
}