/* --- 2. WELCOME MODAL (Vyskakovací okno) --- */
.welcome-modal-overlay {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.7);
    display: none; /* JS to změní na flex */
    align-items: center;
    justify-content: center;
    z-index: 9999;
}
.welcome-modal-content {
    background: white;
    padding: 40px;
    border-radius: 8px;
    max-width: 600px;
    width: 90%;
    text-align: center;
    position: relative;
    box-shadow: 0 5px 25px rgba(0,0,0,0.5);
}
.close-modal-btn {
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 28px;
    cursor: pointer;
    color: #888;
    line-height: 1;
}
.close-modal-btn:hover { color: #000; }

/* --- 3. SYSTÉMOVÉ LIŠTY (Slovník) --- */
.alert-bar {
    width: 100%;
    padding: 10px;
    text-align: center;
    font-weight: bold;
    color: white;
    font-size: 14px;
}
.alert-info { background-color: #3498db; }
.alert-warning { background-color: #f1c40f; color: #333; }
.alert-danger { background-color: #e74c3c; }