#calendar-container {
    text-align: center;
    max-width: 350px;
    margin: 0 auto;
    padding: 10px;
    box-sizing: border-box;
}

/* Navigačné šípky a mesiac */
.calendar-nav {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
}

.calendar-btn {
    background-color: #D32F2F;
    color: white;
    border: none;
    padding: 5px 10px;
    cursor: pointer;
    border-radius: 4px;
}

.calendar-btn:hover {
    background-color: #B71C1C;
}

/* Hlavička dní v týždni */
.calendar-header {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    font-weight: bold;
    margin-bottom: 5px;
    color: white;
}

/* Kalendárová mreža */
.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 5px;
}

/* Bežné dni */
.calendar-day {
    padding: 10px;
    text-align: center;
    border-radius: 5px;
    background-color: #444;
    color: white;
    cursor: pointer;
    transition: 0.3s;
}

.calendar-day.past {
    color: #888;
    background-color: #2D2D2D;
    pointer-events: none;
}

.calendar-day.selectable {
    background-color: #555;
    border: 1px solid #D32F2F;
}

.calendar-day.selectable:hover {
    background-color: #D32F2F;
    color: white;
}

.calendar-day.active {
    background-color: #D32F2F;
    color: white;
    font-weight: bold;
}

/* Responzivita */
@media (max-width: 600px) {
    .calendar-header,
    .calendar-grid {
        grid-template-columns: repeat(7, 1fr);
        font-size: 14px;
    }

    .calendar-day {
        padding: 8px;
    }
}