html {
    position: relative;
    min-height: 100%;
}

body {
    margin-bottom: 60px;
}

.footer {
    position: absolute;
    bottom: 0;
    width: 100%;
    white-space: nowrap;
    line-height: 60px;
}

/* Card hover effects */
.card {
    transition: transform 0.2s, box-shadow 0.2s;
}

    .card:hover {
        transform: translateY(-5px);
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
    }

/* Custom styles for file upload */
.custom-file-input:lang(en) ~ .custom-file-label::after {
    content: "Browse";
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .display-4 {
        font-size: 2rem;
    }

    .footer {
        line-height: 40px;
        font-size: 0.9rem;
    }
}

/* Loading spinner */
.spinner {
    border: 3px solid #f3f3f3;
    border-top: 3px solid #3498db;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}