/* =========================
   工具页面基础
========================= */

.tool-page {
    padding: 24px 0;
}

/* =========================
   顶部
========================= */

.tool-header {
    margin-bottom: 18px;
}

.tool-header h1 {
    margin: 0 0 10px 0;
    font-size: 28px;
    line-height: 1.35;
}

.tool-desc {
    margin: 0 0 18px 0;
    color: #666;
    line-height: 1.7;
    font-size: 15px;
}

/* =========================
   搜索
========================= */

.tool-search {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 12px;
    margin-bottom: 18px;
}

.tool-search .form-input {
    width: 100%;
    min-width: 0;
}

/* =========================
   分类
========================= */

.tool-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
}

.tool-categories .btn {
    white-space: nowrap;
}

.tool-categories .btn.active {
    background: #1f6feb;
    color: #fff;
    border-color: #1f6feb;
}

/* =========================
   工具网格
   PC：4列
========================= */

.tool-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
}

.tool-card {
    background: #fff;
    border: 1px solid #eee;
    border-radius: 8px;
    padding: 18px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.tool-card:hover {
    border-color: #1f6feb;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.08);
    transform: translateY(-2px);
}

.tool-card h3 {
    margin: 0 0 10px 0;
    font-size: 18px;
    line-height: 1.4;
    color: #222;
}

.tool-card p {
    margin: 0;
    min-height: 48px;
    line-height: 1.7;
    color: #666;
    font-size: 14px;
}

.tool-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
    margin-top: 18px;
    padding-top: 12px;
    border-top: 1px solid #f0f0f0;
    font-size: 13px;
}

.tool-card-footer span {
    color: #888;
}

.tool-card-footer a {
    color: #1f6feb;
    text-decoration: none;
    white-space: nowrap;
}

.tool-card-footer a:hover {
    text-decoration: underline;
}

/* =========================
   分页
========================= */

.pagination {
    display: flex;
    justify-content: center;
    margin-top: 25px;
    gap: 8px;
    flex-wrap: wrap;
}

.pagination button {
    padding: 6px 12px;
    border: 1px solid #ddd;
    background: #fff;
    cursor: pointer;
    border-radius: 4px;
}

.pagination button.active {
    background: #1677ff;
    color: #fff;
    border-color: #1677ff;
}

.pagination button:hover {
    opacity: 0.85;
}

/* =========================
   空状态
========================= */

.empty-box {
    padding: 40px 20px;
    text-align: center;
    color: #888;
    background: #fff;
    border: 1px dashed #ddd;
    border-radius: 8px;
}

/* =========================
   平板适配
   900px以下：2列
========================= */

@media (max-width: 900px) {

    .tool-page {
        padding: 20px 0;
    }

    .tool-grid {
        grid-template-columns: repeat(2, 1fr);
    }

}

/* =========================
   手机适配
   600px以下：1列
========================= */

@media (max-width: 600px) {

    .tool-page {
        padding: 14px 0;
    }

    .tool-header {
        margin-bottom: 14px;
    }

    .tool-header h1 {
        font-size: 24px;
    }

    .tool-desc {
        font-size: 14px;
        line-height: 1.7;
    }

    .tool-search {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .tool-search button,
    .tool-search .btn {
        width: 100%;
    }

    .tool-categories {
        gap: 8px;
        margin-bottom: 16px;
    }

    .tool-categories .btn {
        flex: 1 1 calc(50% - 8px);
        text-align: center;
        font-size: 13px;
        padding: 8px 6px;
    }

    .tool-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .tool-card {
        padding: 16px;
    }

    .tool-card h3 {
        font-size: 17px;
    }

    .tool-card p {
        min-height: auto;
        font-size: 14px;
    }

    .tool-card-footer {
        margin-top: 14px;
        font-size: 13px;
    }

    .pagination {
        gap: 6px;
        margin-top: 20px;
    }

    .pagination button {
        padding: 6px 10px;
        font-size: 13px;
    }

    .empty-box {
        padding: 28px 16px;
    }

}

/* =========================
   小屏手机优化
========================= */

@media (max-width: 380px) {

    .tool-categories .btn {
        flex: 1 1 100%;
    }

    .tool-card-footer {
        flex-direction: column;
        align-items: flex-start;
    }

}