/* Modern Sidebar Styling */
.sidebar-wrapper {
    position: sticky;
    top: 20px;
    height: calc(100vh - 120px);
    overflow-y: auto;
    padding-right: 10px;
}

.sidebar-wrapper::-webkit-scrollbar {
    width: 6px;
}

.sidebar-wrapper::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 10px;
}

.sidebar-wrapper::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 10px;
}

.sidebar-wrapper::-webkit-scrollbar-thumb:hover {
    background: #555;
}

.sidebar-nav {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar-nav .nav-item {
    margin-bottom: 4px;
}

.sidebar-nav .nav-item a,
.sidebar-nav .nav-item button {
    display: block;
    padding: 12px 16px;
    color: #4a5568;
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.2s ease;
    font-size: 14px;
    font-weight: 500;
    border: none;
    background: transparent;
    width: 100%;
    text-align: left;
    cursor: pointer;
}

.sidebar-nav .nav-item a:hover,
.sidebar-nav .nav-item button:hover {
    background: #f7fafc;
    color: #2d3748;
    transform: translateX(4px);
}

.sidebar-nav .nav-item a.active {
    background: #4299e1;
    color: white;
}

.sidebar-nav .nav-item a.active:hover {
    background: #3182ce;
    transform: translateX(0);
}

/* Kategorie oddělovače */
.sidebar-nav hr {
    margin: 16px 0;
    border: none;
    border-top: 2px solid #e2e8f0;
    opacity: 1;
}

/* Kategorie nadpisy */
.sidebar-category {
    padding: 8px 16px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    color: #a0aec0;
    letter-spacing: 0.5px;
    margin-top: 16px;
    margin-bottom: 8px;
}

/* Ikony (pokud budete chtít přidat) */
.sidebar-nav .nav-item a::before,
.sidebar-nav .nav-item button::before {
    content: "→";
    margin-right: 8px;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.sidebar-nav .nav-item a:hover::before,
.sidebar-nav .nav-item button:hover::before {
    opacity: 1;
}

.sidebar-nav .nav-item a.active::before {
    content: "●";
    opacity: 1;
}

/* Speciální styling pro tlačítka */
.sidebar-nav .nav-item button {
    font-family: inherit;
}

.sidebar-nav .nav-item button:focus {
    outline: 2px solid #4299e1;
    outline-offset: 2px;
}

/* Responsive */
@media (max-width: 767px) {
    .sidebar-wrapper {
        position: static;
        height: auto;
        margin-bottom: 20px;
    }
    
    .sidebar-nav .nav-item a,
    .sidebar-nav .nav-item button {
        padding: 10px 12px;
        font-size: 13px;
    }
}

/* Shadow variant */
.sidebar-nav .nav-item a,
.sidebar-nav .nav-item button {
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.sidebar-nav .nav-item a:hover,
.sidebar-nav .nav-item button:hover {
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.07);
}

/* Badge styling pro notifikace */
.sidebar-badge {
    display: inline-block;
    padding: 2px 8px;
    font-size: 11px;
    font-weight: 600;
    border-radius: 12px;
    background: #fc8181;
    color: white;
    margin-left: auto;
    float: right;
}