body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    background-color: #f0f0f0;
}

.calendar-container {
    width: 900px;
    height: 600px;
    background-image: url('pic/advent2025.jpg');
    background-size: cover;
    background-position: center;
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    grid-template-rows: repeat(5, 1fr);
    gap: 10px;
    padding: 10px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.door {
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #09e42d4b;
    cursor: pointer;
    border-radius: 8px;
    transition: transform 0.3s, background-color 0.3s;
    position: relative;
    color: white;
    font-size: 2em;
    font-weight: bold;
}

.door:hover {
    background-color: #e8ec0a57;
}

.door.disabled {
    cursor: not-allowed;
    background-color: #8f898923;
    opacity: 0.6;
    pointer-events: none;
}

.door.opened {
    background-color: #58555570;
    cursor: default;
    pointer-events: none;
}

.door-content {
    display: none;
    width: 100%;
    height: 100%;
    justify-content: center;
    align-items: center;
}

.door.opened .door-content {
    display: flex;
}

.door.opened .door-number {
    display: none;
}

.pine-icon {
    width: 50%;
    height: auto;
}

/* Mobilra optimalizálás */
@media (max-width: 920px) {
    .calendar-container {
        width: 100%;
        height: auto;
        aspect-ratio: 900 / 600;
        padding: 5px;
        gap: 2px;
    }
    .door {
        font-size: 1.5em;
    }
}