:root {
    /* Firemní barvy */
    --color-o2-blue: #010066;
    --color-cetin-red: #F12D49;
    --color-odbory-yellow: #FDC700;
    
    /* Barvy rozhraní */
    --color-bg: #f5f6f8;
    --color-nav-bg: #f2f2f2;
    --color-white: #ffffff;
    --color-text: #333333;
    --color-border: #e1e4e8;
    
    /* Vizuální vlastnosti */
    --transition: all 0.2s ease;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    height: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    padding-top: 80px;
    display: flex;
    flex-direction: column;
    overflow-x: auto; /* Povolí scrollování celé stránky, pokud je tabulka obrovská */
}

/* --- HORNÍ NAVIGAČNÍ LIŠTA --- */
.top-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 80px;
    background-color: var(--color-nav-bg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 30px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    z-index: 1000;
    border-bottom: 1px solid #d0d0d0;
}

.nav-brand img {
    height: 60px;
    width: auto;
    display: block;
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 20px;
    color: var(--color-o2-blue);
    font-size: 0.9rem;
}

.nav-user strong {
    color: var(--color-o2-blue);
    font-weight: 800;
}

/* --- HLAVIČKY STRÁNEK --- */
.page-header {
    background-color: var(--color-white);
    padding: 30px;
    border-bottom: 1px solid var(--color-border);
    margin-bottom: 30px;
}

.page-header h1 {
    color: var(--color-o2-blue);
    font-size: 2rem;
    margin: 0;
}

/* Hlavička s menu v jedné linii */
.page-header-flex {
    background-color: var(--color-white);
    padding: 20px 30px;
    border-bottom: 1px solid var(--color-border);
    margin-bottom: 20px;
    display: flex;
    justify-content: flex-start;
    align-items: center;
    gap: 40px;
}

.page-header-flex h1 {
    color: var(--color-o2-blue);
    font-size: 1.6rem;
    margin: 0;
    white-space: nowrap;
}

.header-menu {
    display: flex;
    gap: 10px;
    align-items: center;
}

.header-menu .btn { 
    padding: 8px 15px; 
    font-size: 14px; 
    border: 1px solid #ccc; 
    background: #eef2f5; 
    color: var(--color-o2-blue); 
    white-space: nowrap;
}
.header-menu .btn.active { 
    background: var(--color-o2-blue); 
    color: #fff; 
    border-color: var(--color-o2-blue); 
}
.header-menu .btn.admin-btn { 
    border-color: var(--color-cetin-red); 
    color: var(--color-cetin-red); 
}

/* --- ROZVRŽENÍ A KARTY --- */
.container {
    /* TADY JE TO KOUZLO PRO ROZTAŽENÍ STRÁNKY PODLE TABULKY */
    width: max-content; 
    min-width: 100%; 
    margin: 0 auto;
    padding: 0 30px 40px 30px;
    flex: 1 0 auto;
}

.card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    padding: 25px;
    margin-bottom: 20px;
}

/* Kompaktní karta pro filtry */
.card-filters {
    background-color: #fcfcfc;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    padding: 15px 25px;
    margin-bottom: 20px;
}

.card h2 {
    color: var(--color-o2-blue);
    margin-bottom: 20px;
    font-size: 1.3rem;
}

.grid-menu {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.menu-item {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    padding: 25px;
    text-decoration: none;
    color: var(--color-text);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    border-top: 4px solid var(--color-o2-blue);
}

.menu-item:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    transform: translateY(-2px);
    border-color: var(--color-o2-blue);
}

/* --- TLAČÍTKA --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.btn-blue { background-color: var(--color-o2-blue); color: #ffffff; }
.btn-blue:hover { background-color: #020088; }
.btn-yellow { background-color: var(--color-odbory-yellow); color: var(--color-o2-blue); }
.btn-yellow:hover { background-color: #e5b400; }
.btn-red { background-color: var(--color-cetin-red); color: #ffffff; }
.btn-red:hover { background-color: #d1223d; }
.btn-small { padding: 6px 12px; font-size: 13px; }

/* --- DYNAMICKÉ A RESPONZIVNÍ TABULKY --- */

/* Tabulky se musí chovat volně a nerozbíjet kontejner vnitřním posuvníkem */
div[style*="overflow-x: auto;"] {
    overflow-x: visible !important;
    width: 100%;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 10px 15px;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
    white-space: nowrap; /* TOTO ZABRÁNÍ USEKNUTÍ E-MAILU/JMÉNA DO DVOU ŘÁDKŮ */
    font-size: 0.95rem;
}

th {
    background-color: #f8f9fa;
    color: var(--color-o2-blue);
    font-weight: 600;
}

tr:hover { background-color: #f4f7f6; }

/* --- FORMULÁŘE A FILTRY --- */
.form-group { margin-bottom: 15px; }
.form-group label { display: block; margin-bottom: 5px; font-weight: 600; color: #444; font-size: 0.85rem; }
.form-control {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 14px;
    font-family: inherit;
}
.form-control:focus { outline: none; border-color: var(--color-o2-blue); }

.form-row { display: flex; gap: 20px; flex-wrap: wrap; }
.form-group.half-width { flex: 1; min-width: 250px; }

/* --- MODÁLNÍ OKNO (Nastavení sloupců) --- */
.modal-overlay {
    display: none;
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 2000;
    justify-content: center; align-items: center;
}
.modal-overlay.active { display: flex; }

.modal-content {
    background: #fff; padding: 25px; border-radius: 8px; width: 100%; max-width: 500px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.column-list { 
    list-style: none; padding: 0; margin: 15px 0; 
    border: 1px solid #ddd; border-radius: 4px; 
    max-height: 350px; overflow-y: auto; 
}
.column-item {
    display: flex; justify-content: space-between; align-items: center;
    padding: 10px 15px; border-bottom: 1px solid #eee; background: #fafafa;
}
.column-item:last-child { border-bottom: none; }
.column-item label { display: flex; align-items: center; gap: 10px; cursor: pointer; flex-grow: 1; font-weight: 600; }
.column-controls { display: flex; gap: 5px; }
.column-controls button {
    background: #ddd; border: none; border-radius: 4px; padding: 5px 10px; cursor: pointer; color: #333; font-weight: bold;
}
.column-controls button:hover { background: var(--color-o2-blue); color: #fff; }

/* --- PATIČKA --- */
.main-footer {
    flex-shrink: 0;
    background-color: var(--color-white);
    border-top: 3px solid var(--color-cetin-red);
    padding: 30px 20px;
    margin-top: 50px;
    text-align: center;
    /* Pokud se tabulka roztáhne, patička se roztáhne s ní */
    width: 100%; 
}

.footer-warning {
    color: var(--color-cetin-red);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.70rem;
    max-width: 95%;
    margin: 0 auto 15px auto;
    letter-spacing: 0.5px;
    line-height: 1.4;
}

.footer-copyright {
    color: #888;
    font-size: 0.8rem;
}

/* --- RESPONZIVITA (Mobily a tablety) --- */
@media (max-width: 768px) {
    body { padding-top: 100px; }
    
    .top-nav {
        flex-direction: column;
        height: auto;
        padding: 10px 20px;
        gap: 10px;
    }
    
    .nav-brand img { height: 45px; }
    
    .page-header-flex { 
        flex-direction: column; 
        align-items: flex-start; 
        gap: 15px; 
    }
    .header-menu { flex-wrap: wrap; }
    
    .container { 
        padding: 0 15px 20px 15px; 
        width: 100%; /* Na úzkém displeji vrátíme šířku, ať mobil neujede mimo */
    }
    
    /* Na mobilu vrátíme vnitřní scrollování tabulce, aby nerozštípala celý telefon do šířky */
    div[style*="overflow-x: auto;"] {
        overflow-x: auto !important;
    }
    
    .card-filters form { flex-direction: column; align-items: stretch !important; }
    .card-filters form .form-group { width: 100%; min-width: 100% !important; }
    .card-filters form .btn { width: 100%; margin-top: 5px; }
    
    .grid-menu { grid-template-columns: 1fr !important; }
}