.highlights-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.highlights-grid {
    column-count: 3;
    column-gap: 2rem;
    margin-top: 2rem;
}

.highlight-card {
    background: var(--color-bg-light);
    padding: var(--spacing-3);
    transition: transform 0.2s;
    margin-bottom: 2rem;
    display: inline-block;
    width: 100%;
}

.highlight-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
}

.highlight-author {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--color-text-mid);
}

.highlight-date {
    font-size: 0.85rem;
    color: var(--color-text-mid);
}

.highlight-content {
    font-size: 1.1rem;
    line-height: 1.3;
    color: var(--color-text);
}

.highlight-mark {
    background: var(--color-accent-300);
    padding: 0.1em 0.2em;
    font-weight: 500;
}
.context-text {
    margin-bottom: 0.5rem;
    font-style: normal;
}

.highlight-footer {
    margin-top: 1rem;
    padding-top: 1rem;
}

.highlight-footer .article-preview {
    margin-top: 0.5rem;
}

.article-reference {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--color-accent-strong);
    text-decoration: none;
    transition: color 0.2s;
}

.article-reference:hover {
    color: var(--color-primary);
    text-decoration: underline;
}

.no-highlights {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--color-text-mid);
    font-size: 1.1rem;
}

.error-message {
    background: #fee;
    border: 1px solid #fcc;
    padding: 1rem;
    margin: 1rem 0;
    color: #c00;
}
.highlights-stats {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: var(--color-bg-light);
    margin-bottom: 1.5rem;
}

/* Article inline highlights */
.article-highlight {
    background: transparent;
    border-bottom: 2px solid transparent;
    padding: 0.1em 0;
    transition: all 0.3s ease;
    cursor: help;
}

.article-highlight.visible {
    background: var(--color-accent-300);
    border-bottom-color: var(--color-accent-300);
}

.article-highlight.visible:hover {
    background: var(--color-accent-300);
    border-bottom-color: var(--color-accent);
}

/* Toggle button active state */
.btn[aria-pressed="true"] {
    background-color: var(--color-accent-300);
    border-color: var(--color-accent-300);
}

.btn[aria-pressed="true"]:hover {
    color: var(--color-text);
    background-color: var(--color-accent-400);
}

/* Sidebar highlights - compact cards */
.highlights-sidebar {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.highlight-card-compact {
    background: var(--color-bg-light);
    padding: var(--spacing-2);
    transition: transform 0.2s, box-shadow 0.2s;
}

.highlight-card-compact:hover {
    transform: translateY(-2px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.highlight-header-compact {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
    font-size: 0.85rem;
    gap: 0.5rem;
}

.highlight-content-compact {
    font-size: 0.95rem;
    line-height: 1.4;
    color: var(--color-text);
}

.highlight-mark-compact {
    background: var(--color-accent-300);
    padding: 0.1em 0.2em;
    font-weight: 500;
    border-radius: 2px;
}

.context-text-compact {
    margin-bottom: 0.5rem;
    font-style: normal;
    color: var(--color-text-mid);
}

.sidebar-section {
    margin-bottom: 2rem;
}

.sidebar-heading {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

/* Mobile highlights - hidden by default, shown when sidebar is not visible */
.highlights-mobile-section {
    display: none;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 2px solid var(--color-border);
}

.highlights-mobile-heading {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--color-text);
}

.highlights-mobile-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

/* Show mobile highlights when sidebar is hidden (1200px and below) */
@media (max-width: 1200px) {
    .highlights-mobile-section {
        display: block;
    }
}

@media (max-width: 768px) {
    .highlights-grid {
        column-count: 1;
    }

    .highlight-card {
        margin-bottom: 1.5rem;
    }

    .highlights-mobile-grid {
        grid-template-columns: 1fr;
    }
}

@media (min-width: 769px) and (max-width: 1400px) {
    .highlights-grid {
        column-count: 2;
    }
}