body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: #F8F9FA;
}

.navbar-brand {
    font-weight: 600;
}

.hero {
    background: linear-gradient(135deg, #0D6EFD, #4D8BF2);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.hero h1 {
    font-weight: 700;
    font-size: 3rem;
}

.translation-box {
    background-color: #FFFFFF;
    border-radius: 0.5rem;
    padding: 2rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.form-label {
    font-weight: 500;
}

.btn-primary {
    background-color: #0D6EFD;
    border-color: #0D6EFD;
    padding: 0.75rem 1.5rem;
    font-weight: 500;
}

.btn-primary:hover {
    background-color: #0b5ed7;
    border-color: #0a58ca;
}

.custom-file-upload {
    border: 2px dashed #0D6EFD;
    border-radius: 0.375rem;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    background-color: #f8f9fa;
    transition: background-color 0.2s;
}

.custom-file-upload:hover {
    background-color: #e9ecef;
}

#file-upload-filename {
    margin-top: 1rem;
    font-style: italic;
    color: #6c757d;
}

#processing-message {
    display: none;
    margin-top: 1.5rem;
}