body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: linear-gradient(45deg, #ffefd5, #ffcccc);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    color: #333;
}

.calendar-container {
    text-align: center;
    width: 90%;
    max-width: 800px;
}

h1 {
    font-size: 2.5em;
    margin-bottom: 20px;
    color: #b30000;
}

.calendar {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 10px;
}

.door {
    position: relative;
    width: 100px;
    height: 100px;
    background: #fff;
    border: 2px solid #b30000;
    border-radius: 10px;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5em;
    font-weight: bold;
    transition: transform 0.3s ease;
}

.door:hover {
    transform: scale(1.05);
}

.door.locked {
    background: #ddd;
    color: #aaa;
    cursor: not-allowed;
    border-color: #aaa;
}

.door span {
    pointer-events: none;
}