/* AI Tools Page Specific CSS */
.tools-page-container {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
}

.filters-sidebar {
    width: 250px;
    flex-shrink: 0;
    position: sticky;
    top: 90px; /* Header height + gap */
}

/* 移动端过滤器按钮 */
.filter-toggle-btn {
    display: none;
    width: 100%;
    padding: 0.75rem;
    font-size: 1rem;
    font-weight: 500;
    background-color: var(--white-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    text-align: left;
    margin-bottom: 1rem;
}
.filter-toggle-btn span { pointer-events: none; }
.filter-toggle-btn .filter-summary {
    font-size: 0.8rem;
    color: var(--light-text-color);
    margin-left: 8px;
}

.filters-content {
    background: var(--white-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    position: relative;
}

/* 移动端弹窗样式 */
.filter-popup-body { display: contents; } /* 在桌面端不起作用 */

.filter-popup-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}
.filter-popup-header h4 { margin: 0; border: none; }
.filter-ok-btn { display: none; } /* 在桌面端隐藏 */


.filter-group h5 {
    font-size: 1rem; margin-top: 1rem; margin-bottom: 0.75rem;
    padding-bottom: 0.5rem; border-bottom: 1px solid var(--border-color);
}
.filter-group:first-child h5 { margin-top: 0; }
.filter-list { list-style: none; }
.filter-list li { margin-bottom: 0.5rem; }
.filter-list label { display: flex; align-items: center; gap: 0.5rem; font-size: 0.9rem; cursor: pointer; }

.tools-main-content { flex-grow: 1; min-width: 0; }

.tools-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}
.tools-header h2 { border: none; margin: 0; }
.sort-options { display: flex; align-items: center; gap: 0.5rem; font-size: 0.9rem; }
.sort-options .sort-link {
    padding: 0.4rem 0.8rem; border-radius: 6px; text-decoration: none;
    color: var(--light-text-color); border: 1px solid transparent;
}
.sort-options .sort-link.active, .sort-options .sort-link:hover {
    background-color: #eef2ff; color: var(--primary-color);
}

.loading-spinner { display: flex; justify-content: center; padding: 2rem; }
.spinner {
    border: 4px solid rgba(0, 0, 0, 0.1); width: 36px; height: 36px;
    border-radius: 50%; border-left-color: var(--primary-color);
    animation: spin 1s ease infinite;
}
@keyframes spin { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Submit Page */
.submit-page-container {
    max-width: 700px;
    margin: 2rem auto;
}
.submit-form-wrapper {
    background: var(--white-color);
    padding: 2rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
}
.submit-intro { text-align: center; margin-bottom: 2rem; }
.submit-intro h1 { font-size: 2rem; }
.submit-intro p { color: var(--light-text-color); }
.form-group { margin-bottom: 1.5rem; }
.form-group label { display: block; font-weight: 500; margin-bottom: 0.5rem; }
.form-group input, .form-group textarea, .form-group select {
    width: 100%; padding: 0.75rem; border: 1px solid var(--border-color);
    border-radius: 6px; font-size: 1rem;
}
.submit-btn {
    width: 100%; padding: 0.8rem; background-color: var(--primary-color);
    color: var(--white-color); border: none; border-radius: 6px;
    font-size: 1rem; font-weight: bold; cursor: pointer; transition: background-color 0.2s;
}
.submit-btn:hover { background-color: #0b5ed7; }

.submit-message {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 6px;
    text-align: center;
}
.submit-message.success { background-color: #dcfce7; color: #166534; }
.submit-message.error { background-color: #fee2e2; color: #b91c1c; }

.what-happens-next {
    margin-top: 2rem; padding: 1.5rem; background-color: #eef2ff;
    border-radius: 8px; font-size: 0.9rem;
}
.what-happens-next h4 { margin-bottom: 1rem; }
.what-happens-next ul { list-style-position: inside; }

/* Tool Detail Page */
.tool-detail-container { max-width: 800px; margin: 2rem auto; }
.tool-detail-card {
    background-color: var(--white-color); border: 1px solid var(--border-color);
    border-radius: 8px; padding: 2rem;
}
.tool-detail-card .tool-body {
    padding: 2rem 0; border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color); margin: 1.5rem 0;
}
.tool-detail-card .tool-body h2 { font-size: 1.5rem; margin-bottom: 1rem; border: none; padding: 0; }
.tool-detail-card .visit-website-btn { padding: 0.8rem 1.5rem; font-size: 1rem; }

/* Responsive for tools page */
@media (max-width: 992px) {
    .tools-page-container { flex-direction: column; }
    .filters-sidebar { width: 100%; position: static; }
    .filter-toggle-btn { display: block; }
    .filters-content.collapsible {
        display: none;
        position: fixed; top: 0; left: 0; width: 100%; height: 100%;
        background-color: rgba(0,0,0,0.5); z-index: 1010;
        padding: 1rem; overflow-y: auto; align-items: flex-start; justify-content: center;
    }
    .filters-content.collapsible.open { display: flex; } /* Use flex for centering */
    
    .filter-popup-body {
        display: block; /* Override 'contents' */
        background-color: var(--white-color);
        padding: 1rem;
        border-radius: 8px;
        width: 100%;
        max-width: 500px;
        margin-top: 5vh;
    }
    
    .filter-popup-header {
        padding-bottom: 1rem;
        border-bottom: 1px solid var(--border-color);
    }

    .filter-ok-btn {
        display: inline-block;
        background-color: var(--primary-color);
        color: var(--white-color);
        border: none;
        padding: 0.5rem 1.2rem;
        border-radius: 6px;
        font-weight: 500;
        cursor: pointer;
    }

    /* 优化工具列表头部 */
    .tools-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
}

/* --- New Search Bar Styles --- */
.main-search-bar {
    margin-bottom: 2rem;
}

#main-search-input {
    width: 100%;
    padding: 1rem;
    font-size: 1.1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--white-color);
}
#main-search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.25);
}