/* Converter Wrapper */
.converter-wrapper {
    background: #fff;
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

/* Tabs */
.nav-tabs .nav-link {
    color: #555;
    font-weight: 600;
    border: none;
    padding: 12px 24px;
    border-radius: 30px 30px 0 0;
    transition: all 0.2s;
}
.nav-tabs .nav-link.active {
    color: #007bff;
    background: #f8f9fa;
    border-bottom: 3px solid #007bff;
}
.nav-tabs .nav-link:hover {
    background: #f1f3f5;
}

/* Drop Zone */
.drop-zone {
    border: 3px dashed #ddd;
    border-radius: 16px;
    padding: 40px 20px;
    text-align: center;
    transition: all 0.3s;
    background: #fafbfc;
    cursor: pointer;
}
.drop-zone.dragover {
    border-color: #007bff;
    background: #f0f7ff;
}
.drop-zone-content i {
    color: #6c757d;
}
.drop-zone-content p {
    margin: 10px 0 5px;
}
.drop-zone .btn-outline-primary {
    border-radius: 30px;
    padding: 6px 24px;
}

/* File list */
.file-list {
    min-height: 24px;
}

/* Progress */
.progress {
    height: 10px;
    border-radius: 30px;
    background: #e9ecef;
}
.progress-bar {
    background: #007bff;
}

/* Results */
.results-section .card {
    border: none;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
    transition: transform 0.2s;
}
.results-section .card:hover {
    transform: translateY(-5px);
}
.results-section .card-img-top {
    height: 200px;
    object-fit: contain;
    background: #f8f9fa;
    padding: 10px;
}
.results-section .card-body {
    padding: 12px;
}

/* Mobile adjustments */
@media (max-width: 768px) {
    .converter-wrapper {
        padding: 15px;
    }
    .drop-zone {
        padding: 20px;
    }
    .nav-tabs .nav-link {
        padding: 8px 16px;
        font-size: 14px;
    }
}