@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.page-content {
    padding-top: 120px;
    padding-bottom: 80px;
}

/* 加载动画和消息样式 */
.loader-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    grid-column: 1 / -1; /* 占据整行 */
    color: var(--subtle-text-color, #64748b);
}
.loader {
    width: 48px;
    height: 48px;
    border: 5px solid rgba(59, 130, 246, 0.2);
    border-top-color: var(--primary-color, #3b82f6);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 16px;
}
.error-message, .empty-message {
    text-align: center;
    padding: 40px;
    grid-column: 1 / -1;
    color: #475569;
}
.error-message h3 {
    margin-bottom: 8px;
    color: var(--tertiary-color, #ef4444);
}


/* 工具网格布局 */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 35px;
    margin-top: 50px;
}

/* 卡片主样式 */
.tool-card {
    background: var(--content-bg, #fff);
    border: 1px solid var(--border-color, #e2e8f0);
    border-radius: 16px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
    transition: transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1), box-shadow 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    
    /* 入场动画 */
    opacity: 0;
    transform: translateY(20px);
    animation: fadeIn 0.5s cubic-bezier(0.25, 0.8, 0.25, 1) forwards;
}

.tool-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08), 0 5px 10px rgba(0,0,0,0.04);
}

/* 卡片顶部发光效果（悬停时） */
.tool-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color, #10b981));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}
.tool-card:hover::before {
    transform: scaleX(1);
}


/* 卡片内容区域 */
.tool-card-content {
    padding: 24px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

/* 卡片头部 */
.tool-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
}

.tool-logo-wrapper {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    background-color: #f8fafc;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid #f1f5f9;
}
.tool-logo {
    width: 36px;
    height: 36px;
    object-fit: contain;
}

.tool-title-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.tool-name {
    font-size: 22px;
    font-weight: 700;
    color: #1a202c;
    margin: 0;
    line-height: 1.2;
}
.tool-category {
    font-size: 14px;
    font-weight: 500;
    color: #475569;
}

/* 卡片描述 */
.tool-description {
    font-size: 15px;
    color: #475569;
    line-height: 1.7;
    margin: 0 0 24px 0;
    flex-grow: 1;
}

/* 卡片底部 */
.tool-footer {
    padding: 16px 24px;
    background-color: #f8fafc;
    border-top: 1px solid var(--border-color, #e2e8f0);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}

.tool-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}
.tag {
    font-size: 13px;
    background-color: #e2e8f0;
    color: #475569;
    padding: 4px 10px;
    border-radius: 16px;
}

.tool-link {
    display: inline-block;
    text-decoration: none;
    color: var(--primary-color, #3b82f6);
    font-weight: 600;
    transition: color 0.2s, transform 0.2s;
}
.tool-link:hover {
    color: #1d4ed8;
    transform: translateX(3px);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .page-content {
        padding-top: 100px;
        padding-bottom: 60px;
    }
    .tools-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }
}

/* --- 新增：站内/站外标记样式 --- */

/* 角标容器 */
.tool-type-badge {
    position: absolute;
    top: -1px;
    right: -1px;
    padding: 6px 12px 8px 16px;
    font-size: 12px;
    font-weight: 600;
    color: #fff;
    border-top-right-radius: 15px; 
    border-bottom-left-radius: 20px;
    box-shadow: -2px 2px 8px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    opacity: 0.9;
}

/* 外部链接标记颜色 (使用主色) */
.tool-type-external .tool-type-badge {
    background: var(--primary-color, #3b82f6);
}

/* 站内工具标记颜色 (使用次要色) */
.tool-type-internal .tool-type-badge {
    background: var(--secondary-color, #10b981);
}

/* 鼠标悬停时，角标稍微变亮 */
.tool-card:hover .tool-type-badge {
    opacity: 1;
    transform: translate(2px, -2px);
}

/* --- 微调链接样式以增强区分度 --- */

/* 外部链接的箭头稍微加粗 */
.tool-type-external .tool-link {
    font-weight: 600;
}

/* 站内工具的链接颜色更突出 */
.tool-type-internal .tool-link {
    color: var(--secondary-color, #10b981);
    font-weight: 700; /* 加粗以示强调 */
}

.tool-type-internal .tool-link:hover {
    color: #059669; /* 悬停时颜色变深 */
}