body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #fafafa;
    color: #333;
}

header {
    background: #ff6600;
    color: white;
    padding: 20px;
    text-align: center;
}

#calendar-container {
    padding: 20px;
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 10px;
}

.day {
    background: white;
    border: 1px solid #ddd;
    padding: 15px;
    text-align: center;
    border-radius: 6px;
    cursor: pointer;
}

.day:hover {
    background: #ffe0cc;
}