/* assets/css/style.css */
body {
    font-size: 0.9rem;
    background-color: #f8f9fa;
}

.sidebar {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    z-index: 100;
    padding: 48px 0 0;
    box-shadow: inset -1px 0 0 rgba(0, 0, 0, .1);
    overflow-y: auto;
}

.sidebar .nav-link {
    font-weight: 500;
    color: #333;
    padding: 0.5rem 1rem;
    border-radius: 0.25rem;
    margin: 0.2rem 0.5rem;
}

.sidebar .nav-link:hover {
    background-color: rgba(0, 0, 0, .05);
}

.sidebar .nav-link.active {
    color: #fff;
    background-color: #0d6efd;
}

main {
    padding-top: 20px;
}

.card {
    margin-bottom: 20px;
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
}

.card-header {
    background-color: rgba(0, 0, 0, 0.03);
}

.article-content h2 {
    font-size: 1.5rem;
    margin-top: 1.5rem;
    margin-bottom: 1rem;
    font-weight: 500;
    color: #343a40;
}

.article-content p {
    margin-bottom: 1rem;
    line-height: 1.6;
}

.progress {
    border-radius: 0.25rem;
    height: 20px;
}

.subheading-item, .title-item {
    position: relative;
}

.title-input, .subheading-input {
    padding-right: 40px;
}

#articleContent {
    white-space: pre-wrap;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    max-height: 500px;
    overflow-y: auto;
}

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}