.teachin-main-content {
    background-color: #f5f7fa;
    min-height: calc(100vh - 200px);
    padding-bottom: 1rem;
}

.banner-section {
    align-items: center;
    background: var(--portal-accent-gradient-soft, linear-gradient(135deg, #667eea 0%, #764ba2 100%));
    display: flex;
    height: 200px;
    justify-content: center;
    margin-bottom: 2rem;
    width: 100%;
}

.banner-image {
    align-items: center;
    display: flex;
    height: 100%;
    justify-content: center;
    width: 100%;
}

.banner-placeholder {
    color: #fff;
    font-size: 48px;
    font-weight: 700;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.content-wrapper {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: 250px 1fr;
    margin-bottom: 2rem;
}

.sidebar {
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    height: fit-content;
    padding: 1.5rem;
}

.sidebar-nav h3 {
    border-bottom: 2px solid var(--portal-sidebar-title-border, var(--portal-accent-border, #0066cc));
    color: var(--portal-sidebar-title-color, #22314d);
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
}

.sidebar-nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.sidebar-nav .nav-item {
    margin-bottom: 0.5rem;
}

.sidebar-nav .nav-item a {
    background-color: var(--portal-sidebar-link-bg, transparent);
    border: 1px solid var(--portal-sidebar-link-border, transparent);
    border-radius: 6px;
    color: var(--portal-sidebar-link-color, #5a6677);
    display: block;
    padding: 0.8rem 1rem;
    text-decoration: none;
    transition: all 0.3s ease;
}

.sidebar-nav .nav-item a:hover {
    background-color: var(--portal-sidebar-link-hover-bg, var(--portal-accent-soft, #f0f8ff));
    border-color: var(--portal-sidebar-link-hover-border, var(--portal-accent-border-muted, #d9e5f7));
    color: var(--portal-sidebar-link-hover-color, var(--portal-accent-link, #0066cc));
}

.sidebar-nav .nav-item.active a {
    background-color: var(--portal-sidebar-link-active-bg, var(--portal-accent-primary, #0066cc));
    border-color: var(--portal-sidebar-link-active-border, var(--portal-accent-border, #0066cc));
    box-shadow: var(--portal-sidebar-link-active-shadow, 0 10px 22px rgba(15, 23, 42, 0.08));
    color: var(--portal-sidebar-link-active-color, var(--portal-accent-contrast, #ffffff));
}

.teachin-content-area {
    min-width: 0;
}

.search-section {
    background-color: #f8f9fa;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    padding: 1.5rem;
}

.search-box {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    grid-template-columns: 1.8fr 1fr 1fr 1fr auto;
}
.search-box input{
    flex: 1;
    min-width: 260px;
}

.teachin-filter-label {
    color: #475569;
    font-size: 14px;
    font-weight: 500;
    white-space: nowrap;
}
.search-box input,
.teachin-filter-select,
.teachin-date-input {
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    padding: 0.8rem 1rem;
    height: 46px;
    box-sizing: border-box;
}

.search-box input:focus,
.teachin-filter-select:focus,
.teachin-date-input:focus {
    border-color: var(--portal-accent-link, #0066cc);
    outline: none;
}

.search-btn {
    background-color: var(--portal-button-primary-bg, var(--portal-accent-primary, #0066cc));
    border: 1px solid var(--portal-button-primary-border, var(--portal-accent-border, #0066cc));
    border-radius: 4px;
    color: var(--portal-button-primary-text, var(--portal-accent-contrast, #ffffff));
    cursor: pointer;
    font-size: 14px;
    width: 65px;
    height: 32px;
    padding: 0;
    transition: background-color 0.3s ease;
}

.search-btn:hover {
    background-color: var(--portal-button-primary-hover-bg, var(--portal-accent-primary-hover, #0059b3));
    border-color: var(--portal-button-primary-hover-border, var(--portal-accent-primary-hover, #0059b3));
}

.filter-section {
    align-items: center;
    border-bottom: 1px solid #e9ecef;
    color: #666;
    display: flex;
    font-size: 14px;
    justify-content: space-between;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
}

.filter-options {
    align-items: center;
    display: flex;
    gap: 0.5rem;
}

.filter-options label {
    color: #666;
    font-size: 14px;
}

.filter-options select {
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    padding: 0.5rem;
}

.filter-tip {
    color: #999;
    font-size: 14px;
}

.teachin-list {
    background-color: #fff;
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
    overflow: hidden;
}

.teachin-list-header {
    background-color: #f8fafc;
    border-bottom: 2px solid var(--portal-accent-border, #0369a1);
    color: #334155;
    display: grid;
    font-size: 0.9rem;
    font-weight: 600;
    grid-template-columns: 1.8fr 1fr 1fr;
    padding: 0.85rem 0.75rem 0.85rem 1.5rem;
}

.teachin-item {
    align-items: flex-start;
    border-bottom: 1px solid #f1f5f9;
    color: inherit;
    display: grid;
    grid-template-columns: 1.8fr 1fr 1fr;
    padding: 1.25rem 0.75rem 1.25rem 1.5rem;
    text-decoration: none;
    transition: all 0.2s ease;
}

.teachin-item:hover {
    background-color: var(--portal-accent-soft, #f0f9ff);
    box-shadow: inset 3px 0 0 var(--portal-accent-border, #0369a1);
}

.teachin-item:hover .teachin-company h3 {
    color: var(--portal-list-link-hover-color, var(--portal-accent-link-hover, #0052a3));
}

.teachin-item:last-child {
    border-bottom: none;
}

.teachin-company {
    padding-right: 1rem;
}

.teachin-company h3 {
    color: var(--portal-list-link-color, #1e293b);
    display: block;
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.6;
    margin: 0 0 0.4rem;
}

.teachin-type-tag {
    align-items: center;
    border-radius: 4px;
    display: inline-flex;
    font-size: 0.75rem;
    font-weight: 600;
    gap: 4px;
    letter-spacing: 0.5px;
    line-height: 1.6;
    margin-right: 6px;
    padding: 2px 8px;
    vertical-align: middle;
}

.teachin-type-tag.type-online {
    background-color: #ecfdf5;
    border: 1px solid #a7f3d0;
    color: #059669;
}

.teachin-type-tag.type-offline {
    background-color: #eff6ff;
    border: 1px solid #bfdbfe;
    color: #2563eb;
}

.teachin-type-dot {
    border-radius: 50%;
    display: inline-block;
    height: 6px;
    width: 6px;
}

.teachin-type-tag.type-online .teachin-type-dot {
    background-color: #059669;
}

.teachin-type-tag.type-offline .teachin-type-dot {
    background-color: #2563eb;
}

.teachin-meta-line {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
}

.teachin-company-name {
    color: #64748b;
    font-size: 0.85rem;
}

.teachin-signup-count {
    align-items: center;
    background-color: #f0f9ff;
    border: 1px solid #bae6fd;
    border-radius: 10px;
    color: var(--portal-accent-link, #0369a1);
    display: inline-flex;
    font-size: 0.75rem;
    gap: 3px;
    padding: 1px 8px;
    white-space: nowrap;
}

.teachin-signup-icon {
    flex-shrink: 0;
    height: 12px;
    width: 12px;
}

.teachin-address,
.teachin-date {
    align-items: flex-start;
    color: #64748b;
    display: flex;
    font-size: 0.9rem;
}

.teachin-date {
    flex-direction: column;
    gap: 2px;
}

.teachin-date-line {
    align-items: center;
    display: flex;
    font-size: 0.85rem;
    white-space: nowrap;
}

.teachin-time-line {
    align-items: center;
    color: #94a3b8;
    display: flex;
    font-size: 0.85rem;
    padding-left: 22px;
}

.teachin-address-icon,
.teachin-date-icon {
    color: #94a3b8;
    flex-shrink: 0;
    height: 16px;
    margin-right: 6px;
    width: 16px;
}

.teachin-empty {
    color: #999;
    padding: 2rem;
    text-align: center;
}

.pagination {
    align-items: center;
    border-top: 1px solid #e9ecef;
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
    padding-top: 2rem;
}

.page-btn {
    background-color: var(--portal-pagination-bg, #ffffff);
    border: 1px solid var(--portal-pagination-border, #d6dde7);
    border-radius: 4px;
    color: var(--portal-pagination-text, #333333);
    cursor: pointer;
    font-size: 14px;
    padding: 0.6rem 1.2rem;
    text-decoration: none;
    transition: all 0.3s ease;
}

.page-btn:hover {
    background-color: var(--portal-pagination-hover-bg, var(--portal-accent-soft, #f0f8ff));
    border-color: var(--portal-pagination-hover-border, var(--portal-accent-border, #0066cc));
    color: var(--portal-pagination-hover-text, var(--portal-accent-link, #0066cc));
}

.page-btn.disabled,
.page-btn.disabled:hover {
    background-color: var(--portal-pagination-disabled-bg, #f5f5f5);
    border-color: var(--portal-pagination-disabled-border, #dddddd);
    color: var(--portal-pagination-disabled-text, #999999);
    cursor: not-allowed;
}

.page-info {
    color: #666;
    font-size: 14px;
}

@media (max-width: 1200px) {
    .search-box {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .content-wrapper {
        grid-template-columns: 1fr;
    }

    .banner-section {
        height: 150px;
    }

    .banner-placeholder {
        font-size: 20px;
    }

    .search-box {
        grid-template-columns: 1fr;
    }

    .filter-section {
        align-items: flex-start;
        flex-direction: column;
        gap: 0.5rem;
    }

    .teachin-list-header,
    .teachin-item {
        gap: 0.5rem;
        grid-template-columns: 1fr;
    }
}