body {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

.card {
    border: none;
    border-radius: 15px;
}

.card-header {
    border-radius: 15px 15px 0 0 !important;
    border-bottom: none;
}

.form-control, .input-group-text {
    border-radius: 10px;
}

.btn-primary {
    border-radius: 10px;
    padding: 12px;
    font-weight: 600;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,123,255,0.3);
}

.form-check-input:checked {
    background-color: #007bff;
    border-color: #007bff;
}

.form-check {
    padding: 15px;
    border: 2px solid #e9ecef;
    border-radius: 10px;
    margin-bottom: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.form-check:hover {
    border-color: #007bff;
    background-color: #f8f9fa;
}

.form-check-input:checked + .form-check-label {
    color: #007bff;
    font-weight: 600;
}

.progress {
    height: 25px;
    border-radius: 12px;
    overflow: hidden;
}

.progress-bar {
    border-radius: 12px;
    transition: width 0.6s ease;
}

.download-item {
    background: #f8f9fa;
    border-radius: 10px;
    padding: 15px;
    margin-bottom: 10px;
    border-left: 4px solid #007bff;
    transition: all 0.3s ease;
}

.download-item:hover {
    transform: translateX(5px);
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
}

.download-item .btn {
    border-radius: 8px;
    padding: 8px 15px;
}

.text-truncate {
    max-width: 200px;
}

.alert {
    border-radius: 10px;
}

.spinner-border {
    width: 1rem;
    height: 1rem;
}

@media (max-width: 768px) {
    .container {
        padding: 10px;
    }

    .card {
        border-radius: 10px;
    }

    .form-check {
        padding: 10px;
    }
}