body {
    font-family: Arial, sans-serif;
    text-align: center;
    padding: 10px;
}

h1 {
    font-size: 2.5em;
    color: #333;
}

input, label, select, button {
    margin: 10px;
    font-size: 1.2em;
}

input#country-search {
    padding: 10px;
    font-size: 1.1em;
    width: 250px;
}

button.styled-button {
    padding: 12px 20px;
    cursor: pointer;
    background-color: #007BFF;
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 1.2em;
    transition: all 0.3s ease;
}

button.styled-button:hover {
    background-color: #0056b3;
    transform: scale(1.05);
}

#calendars {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
}

.calendar-container {
    border: 2px solid #000;
    padding: 15px;
    border-radius: 10px;
    background-color: #f9f9f9;
    width: 100%;
    max-width: 400px;
    box-shadow: 0px 4px 6px rgba(0,0,0,0.1);
}

.calendar {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 5px;
    max-width: 350px;
    margin: auto;
}

.day {
    padding: 12px;
    border: 1px solid #ddd;
    cursor: pointer;
    font-size: 1.1em;
}

.today {
    background-color: gold; 
    font-weight: bold;
}

.current-month { 
    border: 3px solid green;
}

.holiday {
    background-color: lightgreen;
    font-weight: bold;
    cursor: pointer;
}

.popup {
    display: none;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.3);
    z-index: 1000;
}

.popup.show {
    display: block;
}

.close {
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 20px;
    cursor: pointer;
}

@media (max-width: 600px) {
    .calendar-container {
        width: 90%;
    }
    .calendar {
        grid-template-columns: repeat(7, minmax(30px, 1fr));
    }
    .day {
        padding: 8px;
        font-size: 1em;
    }
}