.wordcloud-banner {
    text-align: center;
    margin: 0 0 20px 0;
}

.wordcloud-img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
}

.badges {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
}

.badges img {
    height: 20px;
    border-radius: 3px;
}

.search-section {
    text-align: center;
    margin: 20px 0 30px 0;
}

.search-container {
    position: relative;
    display: inline-block;
    width: 100%;
    max-width: 800px;
}

.search-input {
    width: 100%;
    padding: 12px 40px 12px 20px;
    font-size: 1em;
    border: 1px solid var(--search-border);
    border-radius: 4px;
    outline: none;
    box-sizing: border-box;
    background-color: var(--search-bg);
    color: var(--text-color);
    transition: border-color 0.3s ease, background-color 0.3s ease;
}

.search-input:focus {
    border-color: var(--link-color);
}

.clear-button {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    font-size: 18px;
    color: var(--muted-color);
    cursor: pointer;
    padding: 4px;
    line-height: 1;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.clear-button:hover {
    background-color: var(--border-color);
    color: var(--text-color);
}

.hidden {
    display: none !important;
}

.categories-grid {
    display: grid;
    gap: 15px;
    grid-template-columns: 1fr;
}

.category-card {
    background: var(--card-bg);
    overflow: hidden;
    transition: background-color 0.3s ease;
    margin-bottom: 15px;
}

.category-header {
    background: var(--card-header-bg);
    padding: 4px 8px;
    transition: background-color 0.3s ease;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.category-title {
    font-size: 1.1em;
    font-weight: 700;
    color: var(--text-color);
    margin: 0;
}

.category-count {
    color: var(--muted-color);
    font-size: 0.9em;
}

.issues-list {
    padding: 15px;
}

.issue-item {
    display: flex;
    align-items: center;
    padding: 2px 0;
}

.issue-date {
    color: var(--muted-color);
    font-size: 0.9em;
    min-width: 80px;
    margin-right: 15px;
}

.issue-link {
    color: var(--link-color);
    text-decoration: none;
    flex: 1;
    transition: color 0.3s ease;
}

.issue-link:hover {
    text-decoration: underline;
}

/* 响应式设计 */
@media (max-width: 767px) {
    .container {
        padding: 15px;
    }
    
    .badges {
        gap: 5px;
    }
    
    .badges img {
        height: 18px;
    }
    
    .search-input {
        padding: 10px 35px 10px 15px;
        font-size: 0.9em;
    }
    
    .clear-button {
        right: 6px;
        font-size: 16px;
        width: 22px;
        height: 22px;
    }
    
    .categories-grid {
        gap: 10px;
    }
    
    .issue-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 5px;
    }
    
    .issue-date {
        min-width: auto;
        margin-right: 0;
    }
}

@media (min-width: 768px) and (max-width: 1023px) {
    .categories-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .categories-grid {
        grid-template-columns: 1fr;
    }
    
    .category-card {
        margin-bottom: 0px;
    }
}