/* ============================================
   首页样式 — index.html
   ============================================ */

/* ── 搜索模态框 ── */
.search-overlay {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: none;
    align-items: flex-start;
    justify-content: center;
    padding-top: 120px;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.search-overlay.active {
    display: flex;
}

.search-modal {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    width: 90%;
    max-width: 640px;
    overflow: hidden;
    animation: searchIn 0.2s ease;
}

@keyframes searchIn {
    from { opacity: 0; transform: translateY(-20px) scale(0.97); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.search-modal-input-wrap {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    border-bottom: 1px solid var(--gray-200);
}

.search-modal-input-wrap .search-icon {
    font-size: 20px;
    color: var(--gray-400);
}

.search-modal-input {
    flex: 1;
    border: none;
    background: none;
    font-size: 16px;
    color: var(--gray-800);
    outline: none;
    font-family: var(--font-sans);
}

.search-modal-input::placeholder {
    color: var(--gray-400);
}

.search-modal-hint {
    padding: 12px 20px;
    font-size: 12px;
    color: var(--gray-400);
    border-top: 1px solid var(--gray-100);
}

.search-results {
    max-height: 400px;
    overflow-y: auto;
    padding: 8px;
}

.search-results .tool-card {
    animation: none;
}

.search-empty {
    padding: 40px 20px;
    text-align: center;
    color: var(--gray-400);
    font-size: 14px;
}

/* ── 页面头部 ── */
.page-header {
    text-align: center;
    padding: 56px 24px 44px;
    background: white;
    border-bottom: 1px solid var(--gray-100);
}

.page-header h1 {
    font-size: 36px;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 10px;
    letter-spacing: -0.5px;
}

.page-header .header-subtitle {
    font-size: 16px;
    color: var(--gray-500);
    margin-bottom: 20px;
    line-height: 1.6;
}

.page-header .header-stats {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
}

.header-stat {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--gray-500);
}

.header-stat svg {
    width: 14px;
    height: 14px;
    color: var(--success-500);
}

/* ── 分类标签 ── */
.category-tabs {
    display: flex;
    gap: 6px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 36px;
    padding: 6px;
    background: var(--gray-100);
    border-radius: var(--radius-xl);
    max-width: 780px;
    margin-left: auto;
    margin-right: auto;
    border: 1px solid var(--gray-200);
}

.category-tab {
    padding: 10px 18px;
    font-size: 13px;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-lg);
    background: transparent;
    color: var(--gray-600);
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 6px;
}

.category-tab:hover {
    background: white;
    color: var(--gray-800);
}

.category-tab.active {
    background: white;
    color: var(--primary-600);
    box-shadow: var(--shadow-sm);
}

.category-tab[data-category="pdf"].active {
    color: var(--cat-pdf);
}

.category-tab[data-category="excel"].active {
    color: var(--cat-excel);
}

.category-tab[data-category="image"].active {
    color: var(--cat-image);
}

.category-tab[data-category="code"].active {
    color: var(--cat-code);
}

.category-tab[data-category="qrcode"].active {
    color: var(--cat-qr);
}

.category-tab-icon {
    font-size: 15px;
}

/* ── 工具网格 ── */
.tool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}

.tool-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 22px;
    text-decoration: none;
    color: inherit;
    transition: var(--transition-base);
    display: flex;
    flex-direction: column;
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
    animation: fadeInUp 0.4s ease forwards;
    opacity: 0;
}

.tool-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    opacity: 0;
    transition: var(--transition-base);
}

.tool-card:hover {
    border-color: transparent;
    box-shadow: var(--shadow-lg);
    transform: translateY(-3px);
}

.tool-card:hover::before {
    opacity: 1;
}

/* 类别颜色条 */
.tool-card[data-category="pdf"]::before { background: var(--cat-pdf); }
.tool-card[data-category="excel"]::before { background: var(--cat-excel); }
.tool-card[data-category="image"]::before { background: var(--cat-image); }
.tool-card[data-category="code"]::before { background: var(--cat-code); }
.tool-card[data-category="qrcode"]::before { background: var(--cat-qr); }

.tool-card-header {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    margin-bottom: 12px;
}

.tool-card:hover .tool-icon {
    transform: scale(1.08);
}

.tool-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
    transition: transform 0.2s ease;
}

.tool-info {
    flex: 1;
    min-width: 0;
}

.tool-name {
    font-size: 15px;
    font-weight: 700;
    color: var(--gray-800);
    margin-bottom: 4px;
    line-height: 1.3;
}

.tool-desc {
    font-size: 13px;
    color: var(--gray-500);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.tool-card-footer {
    margin-top: auto;
    padding-top: 14px;
    border-top: 1px solid var(--gray-100);
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 12px;
    color: var(--gray-400);
}

.tool-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 8px;
    background: var(--gray-100);
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 11px;
}

.tool-badge.hot {
    background: #fef2f2;
    color: #dc2626;
}

.tool-badge.new {
    background: #ecfdf5;
    color: #059669;
}

/* 搜索高亮 */
.tool-card .tool-name mark {
    background: #fef08a;
    color: inherit;
    padding: 0 2px;
    border-radius: 2px;
}

/* ── 响应式 ── */

/* ── 搜索模态框响应式 ── */
@media (max-width: 768px) {
    .search-modal {
        width: 95%;
        margin: 0 10px;
    }
}

@media (max-width: 768px) {
    .page-header {
        padding: 40px 16px 32px;
    }

    .page-header h1 {
        font-size: 26px;
    }

    .page-header .header-subtitle {
        font-size: 14px;
    }

    .header-stats {
        gap: 16px;
    }

    .category-tabs {
        gap: 4px;
        padding: 4px;
    }

    .category-tab {
        padding: 8px 14px;
        font-size: 12px;
    }

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

    .tool-card {
        padding: 18px;
    }
}

/* ── 夜间模式适配 ── */
[data-theme="dark"] .page-header {
    background: var(--bg-secondary);
    border-bottom-color: var(--border-color);
}

[data-theme="dark"] .page-header h1 {
    color: var(--text-primary);
}

[data-theme="dark"] .page-header .header-subtitle {
    color: var(--text-secondary);
}

[data-theme="dark"] .category-tabs {
    background: #1a1a1a;
    border-color: var(--border-color);
}

[data-theme="dark"] .category-tab {
    color: var(--text-secondary);
}

[data-theme="dark"] .category-tab:hover {
    background: #2a2a2a;
    color: var(--text-primary);
}

[data-theme="dark"] .category-tab.active {
    background: #2a2a2a;
}

[data-theme="dark"] .tool-card {
    background: var(--bg-card);
    border-color: var(--border-color);
}

[data-theme="dark"] .tool-card:hover {
    background: var(--bg-card-hover);
}

[data-theme="dark"] .tool-card-footer {
    border-top-color: var(--border-color);
}

[data-theme="dark"] .tool-name {
    color: var(--text-primary);
}

[data-theme="dark"] .tool-desc {
    color: var(--text-secondary);
}

[data-theme="dark"] .tool-badge {
    background: #2a2a2a;
}

[data-theme="dark"] .tool-badge.hot {
    background: #451a1a;
    color: #fca5a5;
}

[data-theme="dark"] .tool-badge.new {
    background: #064e3b;
    color: #6ee7b7;
}

[data-theme="dark"] .search-modal {
    background: var(--bg-card);
    border-color: var(--border-color);
}

[data-theme="dark"] .search-modal-input-wrap {
    border-bottom-color: var(--border-color);
}

[data-theme="dark"] .search-modal-input {
    color: var(--text-primary);
}

[data-theme="dark"] .search-modal-hint {
    border-top-color: var(--border-color);
}

[data-theme="dark"] .tool-card:nth-child(1) { animation-delay: 0.03s; }
[data-theme="dark"] .tool-card:nth-child(2) { animation-delay: 0.06s; }
[data-theme="dark"] .tool-card:nth-child(3) { animation-delay: 0.09s; }
[data-theme="dark"] .tool-card:nth-child(4) { animation-delay: 0.12s; }
[data-theme="dark"] .tool-card:nth-child(5) { animation-delay: 0.15s; }
[data-theme="dark"] .tool-card:nth-child(6) { animation-delay: 0.18s; }
[data-theme="dark"] .tool-card:nth-child(7) { animation-delay: 0.21s; }
[data-theme="dark"] .tool-card:nth-child(8) { animation-delay: 0.24s; }
[data-theme="dark"] .tool-card:nth-child(9) { animation-delay: 0.27s; }
[data-theme="dark"] .tool-card:nth-child(10) { animation-delay: 0.30s; }
[data-theme="dark"] .tool-card:nth-child(11) { animation-delay: 0.33s; }
[data-theme="dark"] .tool-card:nth-child(12) { animation-delay: 0.36s; }
[data-theme="dark"] .tool-card:nth-child(13) { animation-delay: 0.39s; }
[data-theme="dark"] .tool-card:nth-child(14) { animation-delay: 0.42s; }
[data-theme="dark"] .tool-card:nth-child(15) { animation-delay: 0.45s; }
[data-theme="dark"] .tool-card:nth-child(16) { animation-delay: 0.48s; }