/* ── Papers Page ── */

.papers-hero {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    padding: 5rem 0 2.5rem 0;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}

.papers-hero-title {
    font-size: 2.5rem;
    font-weight: normal;
    margin-bottom: 1rem;
    letter-spacing: 0.02em;
}

.papers-hero-subtitle {
    font-size: 1.05rem;
    max-width: 750px;
    margin: 0 auto 1.5rem auto;
    line-height: 1.9;
    color: var(--text-secondary);
}

.papers-repo-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    text-decoration: underline;
    text-decoration-color: var(--border-color);
    font-size: 0.95rem;
    transition: color 0.3s ease, text-decoration-color 0.3s ease;
}

.papers-repo-link:hover {
    color: var(--khaki);
    text-decoration-color: var(--khaki);
}

.papers-stats-bar {
    padding: 1.25rem 0;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
}

.papers-stats {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1.5rem;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.papers-stat strong {
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.1rem;
}

.papers-stat-divider {
    color: var(--border-color);
}

.papers-filter {
    padding: 2rem 0;
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
}

.papers-status-toggle {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.status-toggle-btn {
    padding: 0;
    background-color: transparent;
    color: var(--text-secondary);
    border: none;
    cursor: pointer;
    font-family: 'Georgia', serif;
    font-size: 0.95rem;
    transition: color 0.3s ease;
}

.status-toggle-btn:hover,
.status-toggle-btn.active {
    color: var(--accent-color);
}

.status-toggle-btn.active {
    text-decoration: underline;
    text-decoration-thickness: 2px;
    text-underline-offset: 4px;
}

.papers-content {
    padding: 3rem 0;
}

.papers-list {
    max-width: 850px;
    margin: 0 auto;
}

.papers-empty {
    text-align: center;
    color: var(--text-light);
    font-style: italic;
    padding: 3rem 0;
}

.paper-item {
    padding: 0 0 1.5rem 0;
    margin-bottom: 1.75rem;
    border-bottom: 1px solid var(--border-color);
}

.paper-item:last-child {
    border-bottom: none;
}

.paper-item-header {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
}

.paper-status {
    flex-shrink: 0;
    font-size: 1rem;
    line-height: 1.6;
    user-select: none;
}

.paper-item-meta {
    flex: 1;
    min-width: 0;
}

.paper-item-title {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.5;
    margin-bottom: 0.3rem;
}

.paper-item-info {
    display: flex;
    align-items: baseline;
    gap: 1rem;
    flex-wrap: wrap;
}

.paper-venue {
    color: var(--accent-color);
    font-size: 0.9rem;
    font-weight: 500;
    font-style: italic;
}

.paper-category-tag {
    color: var(--text-light);
    font-size: 0.85rem;
    font-style: italic;
}

.paper-takeaway {
    margin: 0.5rem 0 0.5rem 1.75rem;
    padding: 0.6rem 0.9rem;
    background-color: var(--bg-secondary);
    border-left: 3px solid var(--khaki-light);
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

.paper-takeaway i {
    color: var(--khaki);
    margin-right: 0.4rem;
    font-size: 0.9rem;
}

.paper-item-links {
    display: flex;
    gap: 1.25rem;
    margin-left: 1.75rem;
    margin-top: 0.4rem;
}

.paper-link {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    color: var(--text-secondary);
    text-decoration: underline;
    text-decoration-color: var(--border-color);
    text-underline-offset: 2px;
    font-size: 0.9rem;
    transition: color 0.3s ease, text-decoration-color 0.3s ease;
}

.paper-link:hover {
    color: var(--khaki);
    text-decoration-color: var(--khaki);
}

.paper-link i {
    font-size: 0.85rem;
    color: var(--text-light);
    transition: color 0.3s ease;
}

.paper-link:hover i {
    color: var(--khaki);
}

.papers-pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    max-width: 850px;
    margin-left: auto;
    margin-right: auto;
}

@media (max-width: 768px) {
    .papers-hero-title {
        font-size: 2rem;
    }

    .papers-hero-subtitle {
        font-size: 1rem;
    }

    .papers-stats {
        gap: 1rem;
        font-size: 0.9rem;
    }

    .paper-item-header {
        gap: 0.5rem;
    }

    .paper-takeaway {
        margin-left: 0;
    }

    .paper-item-links {
        margin-left: 0;
    }

    .papers-status-toggle {
        gap: 1rem;
    }

    .papers-pagination {
        flex-direction: column;
        gap: 1rem;
    }

    .papers-pagination .pagination-btn {
        width: 100%;
        justify-content: center;
    }
}