/*show*/
    :root {
        --primary-gradient: linear-gradient(135deg, #074973 0%, #1BA665 50%, #ADBF21 100%);
        --primary-color: #074973;
        --secondary-color: #1BA665;
        --accent-color: #ADBF21;
        --light-bg: #f0fdf4;
        --border-color: #a7d8a8;
    }

    body {
        background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
        min-height: 100vh;
    }

    .page-header {
        background: var(--primary-gradient);
        color: white;
        padding: 30px 0;
        margin-bottom: 20px;
        position: relative;
        overflow: hidden;
        box-shadow: 0 8px 30px rgba(7, 73, 115, 0.15);
    }

    .page-header::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: radial-gradient(circle at 20% 50%, rgba(255,255,255,0.1) 0%, transparent 50%);
        pointer-events: none;
    }

    .page-header-content {
        position: relative;
        z-index: 1;
        display: flex;
        justify-content: space-between;
        align-items: center;
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 20px;
    }

    .page-header h1 {
        font-size: 1.8rem;
        font-weight: 700;
        display: flex;
        align-items: center;
        gap: 12px;
        margin: 0;
    }

    .page-header-icon {
        width: 45px;
        height: 45px;
        background: rgba(255,255,255,0.2);
        border-radius: 10px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.3rem;
    }

    .breadcrumb-container {
        max-width: 1200px;
        margin: 0 auto 20px;
        padding: 0 20px;
    }

    .breadcrumb-modern {
        background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
        border-radius: 10px;
        padding: 12px 20px;
        border: 1px solid #e2e8f0;
    }

    .breadcrumb-modern .breadcrumb {
        margin: 0;
        display: flex;
        align-items: center;
        gap: 8px;
        flex-wrap: wrap;
        justify-content: center;
    }

    .breadcrumb-modern .breadcrumb-item {
        display: flex;
        align-items: center;
        gap: 6px;
        font-size: 0.85rem;
    }

    .breadcrumb-modern .breadcrumb-item a {
        color: var(--secondary-color);
        text-decoration: none;
        font-weight: 500;
        transition: color 0.3s ease;
    }

    .breadcrumb-modern .breadcrumb-item a:hover {
        color: var(--primary-color);
    }

    .breadcrumb-modern .breadcrumb-item.active {
        color: #64748b;
        font-weight: 600;
    }

    .breadcrumb-modern .breadcrumb-item + .breadcrumb-item::before {
        content: "›";
        color: #94a3b8;
        font-weight: bold;
    }

    .main-container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 20px;
    }

    .course-header-card {
        background: white;
        border-radius: 14px;
        box-shadow: 0 3px 5px rgba(0, 0, 0, 0.07);
        border: 1px solid #e2e8f0;
        overflow: hidden;
        margin-bottom: 30px;
    }

    .course-banner {
        height: 200px;
        background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
        position: relative;
        overflow: hidden;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .course-banner img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .course-banner-placeholder {
        width: 100%;
        height: 100%;
        display: flex;
        align-items: center;
        justify-content: center;
        color: white;
        font-size: 4rem;
        opacity: 0.8;
    }

    .course-header-content {
        padding: 30px;
    }

    .course-title {
        font-size: 1.8rem;
        font-weight: 700;
        color: #1e293b;
        text-align: center;
        margin-bottom: 10px;
    }

    .course-department {
        text-align: center;
        color: #64748b;
        font-size: 1rem;
        margin-bottom: 30px;
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
    }

    .info-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 20px;
        margin-bottom: 30px;
    }

    .info-section {
        background: #f8fafc;
        border-radius: 10px;
        padding: 20px;
        border: 1px solid #e2e8f0;
    }

    .info-section-title {
        font-size: 1rem;
        font-weight: 700;
        color: var(--primary-color);
        margin-bottom: 15px;
        display: flex;
        align-items: center;
        gap: 8px;
        padding-bottom: 8px;
        border-bottom: 2px solid var(--border-color);
    }

    .info-list {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 15px;
    }

    .info-item {
        background: white;
        border-radius: 8px;
        padding: 15px;
        border: 1px solid #e2e8f0;
        text-align: center;
        transition: all 0.3s ease;
    }

    .info-item:hover {
        border-color: var(--secondary-color);
        transform: translateY(-2px);
    }

    .info-icon {
        width: 40px;
        height: 40px;
        background: linear-gradient(135deg, var(--secondary-color) 0%, var(--accent-color) 100%);
        border-radius: 8px;
        display: flex;
        align-items: center;
        justify-content: center;
        color: white;
        margin: 0 auto 10px;
        font-size: 1.1rem;
    }

    .info-label {
        font-size: 0.8rem;
        color: #64748b;
        margin-bottom: 5px;
    }

    .info-value {
        font-size: 1rem;
        font-weight: 600;
        color: #1e293b;
    }

    .badge-modern {
        display: inline-flex;
        align-items: center;
        gap: 4px;
        padding: 6px 12px;
        border-radius: 12px;
        font-size: 0.8rem;
        font-weight: 600;
        white-space: nowrap;
    }

    .badge-type {
        background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%);
        color: #0369a1;
    }

    .divider {
        height: 1px;
        background: linear-gradient(90deg, transparent 0%, #e2e8f0 50%, transparent 100%);
        margin: 30px 0;
    }

    .lectures-section {
        background: white;
        border-radius: 14px;
        box-shadow: 0 3px 5px rgba(0, 0, 0, 0.07);
        border: 1px solid #e2e8f0;
        padding: 30px;
        margin-bottom: 30px;
        text-align: center;
    }

    .section-title {
        font-size: 1.3rem;
        font-weight: 700;
        color: #1e293b;
        margin-bottom: 20px;
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 10px;
    }

    .section-icon {
        width: 32px;
        height: 32px;
        background: linear-gradient(135deg, var(--secondary-color) 0%, var(--accent-color) 100%);
        border-radius: 8px;
        display: flex;
        align-items: center;
        justify-content: center;
        color: white;
        font-size: 1rem;
    }

    .btn-manage {
        background: linear-gradient(135deg, var(--secondary-color) 0%, #16a34a 100%);
        color: white;
        padding: 12px 24px;
        border-radius: 8px;
        font-weight: 600;
        text-decoration: none;
        display: inline-flex;
        align-items: center;
        gap: 8px;
        transition: all 0.3s ease;
        border: none;
        cursor: pointer;
        font-size: 0.9rem;
    }

    .btn-manage:hover {
        transform: translateY(-2px);
        box-shadow: 0 5px 15px rgba(27, 166, 101, 0.3);
        color: white;
    }

    .description-section {
        background: white;
        border-radius: 14px;
        box-shadow: 0 3px 5px rgba(0, 0, 0, 0.07);
        border: 1px solid #e2e8f0;
        padding: 30px;
        margin-bottom: 30px;
    }

    .description-content {
        background: #f8fafc;
        border-radius: 8px;
        padding: 20px;
        border: 1px solid #e2e8f0;
        line-height: 1.6;
        color: #1e293b;
    }

    .empty-text {
        color: #64748b;
        font-style: italic;
        text-align: center;
        padding: 40px 20px;
    }

    @media (max-width: 768px) {
        .page-header-content {
            flex-direction: column;
            gap: 16px;
            text-align: center;
        }

        .page-header h1 {
            font-size: 1.5rem;
        }

        .course-title {
            font-size: 1.4rem;
        }

        .info-grid {
            grid-template-columns: 1fr;
        }

        .info-list {
            grid-template-columns: 1fr;
        }

        .breadcrumb-modern .breadcrumb {
            flex-direction: column;
            align-items: center;
            gap: 8px;
        }

        .breadcrumb-modern .breadcrumb-item + .breadcrumb-item::before {
            display: none;
        }
    }


/*index*/


    :root {
        --primary-gradient: linear-gradient(135deg, #074973 0%, #1BA665 50%, #ADBF21 100%);
        --primary-color: #074973;
        --secondary-color: #1BA665;
        --accent-color: #ADBF21;
        --light-bg: #f0fdf4;
        --border-color: #a7d8a8;
    }

    body {
        background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
        min-height: 100vh;
    }

    .page-header {
        background: var(--primary-gradient);
        color: white;
        padding: 30px 0;
        margin-bottom: 20px;
        position: relative;
        overflow: hidden;
        box-shadow: 0 8px 30px rgba(7, 73, 115, 0.15);
    }

    .page-header::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: radial-gradient(circle at 20% 50%, rgba(255,255,255,0.1) 0%, transparent 50%);
        pointer-events: none;
    }

    .page-header-content {
        position: relative;
        z-index: 1;
        display: flex;
        justify-content: space-between;
        align-items: center;
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 20px;
    }

    .page-header h1 {
        font-size: 1.8rem;
        font-weight: 700;
        display: flex;
        align-items: center;
        gap: 12px;
        margin: 0;
    }

    .page-header-icon {
        width: 45px;
        height: 45px;
        background: rgba(255,255,255,0.2);
        border-radius: 10px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.3rem;
    }

    .main-container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 20px;
    }

    .table-card {
        background: white;
        border-radius: 14px;
        box-shadow: 0 3px 5px rgba(0, 0, 0, 0.07);
        border: 1px solid #e2e8f0;
        overflow: hidden;
        margin-bottom: 30px;
    }

    .table-header {
        background: linear-gradient(135deg, #f0fdf4 0%, #f5f9e8 100%);
        padding: 20px;
        border-bottom: 1px solid #e2e8f0;
    }

    .table-header h2 {
        font-size: 1.3rem;
        font-weight: 700;
        color: #1e293b;
        margin: 0;
        display: flex;
        align-items: center;
        gap: 10px;
    }

    .table-header-icon {
        width: 32px;
        height: 32px;
        background: linear-gradient(135deg, var(--secondary-color) 0%, var(--accent-color) 100%);
        border-radius: 8px;
        display: flex;
        align-items: center;
        justify-content: center;
        color: white;
        font-size: 1rem;
    }

    .courses-grid {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
        gap: 24px;
        padding: 24px;
    }

    .course-card {
        background: white;
        border-radius: 12px;
        border: 1px solid #e2e8f0;
        overflow: hidden;
        transition: all 0.3s ease;
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    }

    .course-card:hover {
        transform: translateY(-4px);
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
        border-color: var(--border-color);
    }

    .course-image {
        height: 160px;
        background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
        position: relative;
        overflow: hidden;
    }

    .course-image img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .course-image-placeholder {
        width: 100%;
        height: 100%;
        display: flex;
        align-items: center;
        justify-content: center;
        color: white;
        font-size: 3rem;
        opacity: 0.8;
    }

    .course-status {
        position: absolute;
        top: 12px;
        left: 12px;
    }

    .badge-modern {
        display: inline-flex;
        align-items: center;
        gap: 4px;
        padding: 6px 12px;
        border-radius: 12px;
        font-size: 0.75rem;
        font-weight: 600;
        white-space: nowrap;
    }

    .badge-published {
        background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
        color: #1BA665;
    }

    .badge-draft {
        background: linear-gradient(135deg, #f3f4f6 0%, #e5e7eb 100%);
        color: #64748b;
    }

    .course-content {
        padding: 20px;
    }

    .course-title {
        font-size: 1.1rem;
        font-weight: 700;
        color: #1e293b;
        margin-bottom: 8px;
        line-height: 1.4;
    }

    .course-title a {
        color: inherit;
        text-decoration: none;
        transition: color 0.3s ease;
    }

    .course-title a:hover {
        color: var(--secondary-color);
    }

    .course-description {
        color: #64748b;
        font-size: 0.875rem;
        line-height: 1.5;
        margin-bottom: 16px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .course-meta {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 12px;
        margin-bottom: 16px;
    }

    .meta-item {
        display: flex;
        align-items: center;
        gap: 6px;
        font-size: 0.8rem;
        color: #64748b;
    }

    .meta-icon {
        width: 16px;
        height: 16px;
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--secondary-color);
    }

    .course-footer {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding-top: 16px;
        border-top: 1px solid #e2e8f0;
    }

    .course-type {
        background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%);
        color: #0369a1;
        padding: 4px 10px;
        border-radius: 8px;
        font-size: 0.75rem;
        font-weight: 600;
    }

    .btn-manage {
        background: linear-gradient(135deg, var(--secondary-color) 0%, #16a34a 100%);
        color: white;
        padding: 8px 16px;
        border-radius: 8px;
        font-weight: 600;
        text-decoration: none;
        display: inline-flex;
        align-items: center;
        gap: 6px;
        transition: all 0.3s ease;
        font-size: 0.8rem;
    }

    .btn-manage:hover {
        transform: translateY(-2px);
        box-shadow: 0 4px 12px rgba(27, 166, 101, 0.3);
        color: white;
    }

    .empty-state {
        text-align: center;
        padding: 60px 20px;
        color: #64748b;
    }

    .empty-state-icon {
        font-size: 4rem;
        margin-bottom: 16px;
        opacity: 0.5;
    }

    .empty-state-text {
        font-size: 1.125rem;
        font-weight: 500;
        margin-bottom: 8px;
    }

    .empty-state-subtext {
        font-size: 0.9rem;
        margin-bottom: 20px;
    }

    .pagination-container {
        display: flex;
        justify-content: center;
        margin-top: 30px;
        padding: 20px;
    }

    .pagination {
        display: flex;
        gap: 8px;
    }

    .pagination a,
    .pagination span {
        padding: 8px 12px;
        border-radius: 8px;
        border: 1px solid #e2e8f0;
        text-decoration: none;
        color: #1e293b;
        transition: all 0.3s ease;
    }

    .pagination a:hover {
        background: var(--light-bg);
        border-color: var(--secondary-color);
    }

    .pagination .active span {
        background: var(--primary-gradient);
        color: white;
        border-color: transparent;
    }

    @media (max-width: 768px) {
        .page-header-content {
            flex-direction: column;
            gap: 16px;
            text-align: center;
        }

        .page-header h1 {
            font-size: 1.5rem;
        }

        .courses-grid {
            grid-template-columns: 1fr;
            padding: 16px;
            gap: 16px;
        }

        .course-meta {
            grid-template-columns: 1fr;
            gap: 8px;
        }

        .course-footer {
            flex-direction: column;
            gap: 12px;
            align-items: stretch;
        }

        .btn-manage {
            width: 100%;
            justify-content: center;
        }
    }