/* ===== 工具导航页面样式 ===== */
.page-header {
    text-align: center;
    /*margin-bottom: 3rem;*/
    margin-top: 2rem;
}

.page-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.page-description {
    color: var(--secondary);
    max-width: 600px;
    margin: 0 auto 1rem;
}

/* 搜索框样式 */
.search-container {
    max-width: 500px;
    margin: 0 auto 1rem;
    position: relative;
}

.search-input {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    border: var(--border);
    border-radius: 50px;
    font-size: 1rem;
    transition: all 0.3s var(--ease);
}

.search-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(91, 203, 125, 0.2);
}

.search-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--secondary);
}

/* 分类筛选样式 */
.categories {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    justify-content: center;
    margin-bottom: 3rem;
}

.category-btn {
    padding: 0.6rem 1.2rem;
    border: var(--border);
    border-radius: 50px;
    background: transparent;
    cursor: pointer;
    transition: all 0.3s var(--ease);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.category-btn:hover {
    background: rgba(45,45,45,0.05);
}

.category-btn.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* 工具卡片网格 */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.tool-card {
    border: var(--border);
    border-radius: 12px;
    padding: 1.5rem;
    transition: all 0.3s var(--ease);
    position: relative;
    overflow: hidden;
}

.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--card-shadow);
    border-color: transparent;
}

.tool-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
}

.tool-card.doc-tool::before { background-color: var(--category-color-1); }
.tool-card.image-tool::before { background-color: var(--category-color-2); }
.tool-card.dev-tool::before { background-color: var(--category-color-3); }
.tool-card.media-tool::before { background-color: var(--category-color-4); }
.tool-card.network-tool::before { background-color: var(--category-color-5); }
.tool-card.other-tool::before { background-color: var(--category-color-6); }

.tool-header {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
}

.tool-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 1rem;
    font-size: 1.2rem;
}
.tool-icon img {
    width: 100%;
}

.tool-card.doc-tool .tool-icon { background-color: rgba(91, 203, 125, 0.1); color: var(--category-color-1); }
.tool-card.image-tool .tool-icon { background-color: rgba(255, 149, 0, 0.1); color: var(--category-color-2); }
.tool-card.dev-tool .tool-icon { background-color: rgba(0, 122, 255, 0.1); color: var(--category-color-3); }
.tool-card.media-tool .tool-icon { background-color: rgba(88, 86, 214, 0.1); color: var(--category-color-4); }
.tool-card.network-tool .tool-icon { background-color: rgba(255, 45, 85, 0.1); color: var(--category-color-5); }
.tool-card.other-tool .tool-icon { background-color: rgba(142, 142, 147, 0.1); color: var(--category-color-6); }

.tool-title {
    font-size: 1.2rem;
    font-weight: 600;
}

.tool-description {
    color: var(--secondary);
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
}

.tool-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent);
    font-weight: 500;
    font-size: 0.95rem;
    cursor: pointer;
}

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

/* 空状态样式 */
.empty-state {
    text-align: center;
    padding: 3rem;
    grid-column: 1 / -1;
    color: var(--secondary);
}

.empty-state-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

/* 加载指示器 */
.loader-container {
    display: flex;
    justify-content: center;
    padding: 20px;
    height: 60px;
    margin-bottom: 20px;
}
.loader {
    width: 20px;
    height: 20px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--secondary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}
.end-message {
    text-align: center;
    padding: 30px;
    color: #7f8c8d;
    font-style: italic;
}


/* 响应式设计 */
@media (max-width: 768px) {
    .page-title {
        font-size: 2rem;
    }
    .categories {
        justify-content: flex-start;
        overflow-x: auto;
        padding-bottom: 0.5rem;
    }
    .tools-grid {
        grid-template-columns: 1fr;
    }
}