/* Overview Detail Page Styles */
.overview-detail-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.overview-detail-title {
    font-size: 2rem;
    font-weight: bold;
    margin-bottom: 2rem;
    color: #000;
    border-bottom: 2px solid #000;
    padding-bottom: 0.5rem;
}

/* Concept Summary Section */
.concept-summary {
    margin-bottom: 3rem;
}

.origin-section h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: #000;
}

.origin-item {
    background: #fff;
    border: 1px solid #e5e5e5;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.origin-item h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #000;
}

.origin-description {
    line-height: 1.6;
    color: #333;
    margin-bottom: 1rem;
}

.sources {
    margin-top: 1rem;
}

.sources h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #666;
}

.sources ul {
    margin: 0;
    padding-left: 1.5rem;
}

.sources li {
    margin-bottom: 0.25rem;
}

.sources a {
    color: #0066cc;
    text-decoration: none;
    font-size: 0.9rem;
}

.sources a:hover {
    text-decoration: underline;
}

/* Monthly Items Section */
.monthly-items-section {
    margin-top: 3rem;
}

.monthly-items-section h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 2rem;
    color: #000;
}

.month-detail {
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid #e5e5e5;
}

.month-detail:last-child {
    border-bottom: none;
}

.month-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: #000;
    background: #f5f5f5;
    padding: 0.75rem 1rem;
}

.items-container {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.item-card {
    display: flex;
    gap: 1rem;
    background: #fff;
    border: 1px solid #ddd;
    padding: 1rem;
    align-items: flex-start;
}

.item-image {
    flex-shrink: 0;
    width: 120px;
    height: 120px;
}

.item-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    border: 1px solid #e5e5e5;
}

.item-content {
    flex: 1;
    padding-left: 0;
}

.item-name {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #000;
}

.item-description {
    font-size: 0.95rem;
    line-height: 1.5;
    color: #333;
    margin-bottom: 0.5rem;
}

.date-range {
    font-size: 0.9rem;
    color: #666;
    margin-top: 0.5rem;
}

.month-link {
    margin-top: 1rem;
    text-align: right;
}

.month-link a {
    color: #0066cc;
    text-decoration: none;
    font-weight: 500;
}

.month-link a:hover {
    text-decoration: underline;
}

/* Back Link */
.back-link {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid #e5e5e5;
}

.back-link a {
    color: #0066cc;
    text-decoration: none;
    font-size: 1.1rem;
}

.back-link a:hover {
    text-decoration: underline;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .overview-detail-container {
        padding: 1rem;
    }

    .overview-detail-title {
        font-size: 1.5rem;
    }

    .origin-section h2,
    .monthly-items-section h2 {
        font-size: 1.3rem;
    }

    .origin-item {
        padding: 1rem;
    }

    .month-title {
        font-size: 1.1rem;
        padding: 0.5rem 0.75rem;
    }

    .item-card {
        flex-direction: column;
        text-align: center;
        padding: 1rem;
    }

    .item-image {
        width: 150px;
        height: 150px;
        margin: 0 auto 0.5rem;
    }
    
    .item-content {
        padding-left: 0;
    }
}