style.css

:root {
    --primary-color: #0053a6;
    --secondary-color: #fc0000;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.card {
    border: none;
    border-radius: 15px;
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-primary:hover {
    background-color: #004285;
    border-color: #004285;
}

.btn-secondary {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
}

.btn-secondary:hover {
    background-color: #d60000;
    border-color: #d60000;
}

.flag-container {
    perspective: 1000px;
    width: 100px;
    height: 60px;
    margin: 0 auto 20px;
}

.flag {
    width: 100%;
    height: 100%;
    transition: transform 0.6s;
    transform-style: preserve-3d;
}

.flag-container:hover .flag {
    transform: rotateY(180deg);
}

#result {
    transition: all 0.3s ease;
}

#details {
    background-color: #f8f9fa;
    border-radius: 5px;
    padding: 15px;
    transition: all 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.fade-in {
    animation: fadeIn 0.5s ease-in-out;
}

#historyList {
    max-height: 200px;
    overflow-y: auto;
}

#historyList .list-group-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

#historyList .badge {
    font-size: 0.8em;
}