/* Panel przycisków w prawym dolnym rogu ekranu */
.font-size-controller {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: #2c3e50;
    padding: 10px 15px;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
    z-index: 9999;
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: Arial, sans-serif;
    color: #fff;
}

.font-size-label {
    font-size: 12px;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.font-btn {
    background: #34495e;
    color: white;
    border: 1px solid #455a64;
    padding: 6px 12px;
    font-size: 14px;
    font-weight: bold;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.2s;
}

.font-btn:hover {
    background: #415b76;
}

.font-btn:active {
    background: #1a252f;
}

/* Ukrywanie panelu podczas drukowania */
@media print {
    .font-size-controller, .font-size-controller * {
        display: none !important;
    }
}