:root {
        --primary-color: #2563eb;
        --secondary-color: #64748b;
        --accent-color: #f59e0b;
        --success-color: #059669;
        --gradient-bg: linear-gradient(135deg, rgb(105, 162, 202) 0%, rgba(62, 99, 146, 0.69) 100%);
    }

    body {
        font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
        line-height: 1.6;
    }

    /* Hero Banner */
    .hero-banner {
        position: relative;
        overflow: hidden;
        min-height: 600px;
        display: flex;
        align-items: center;
    }

    .hero-banner::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        z-index: 1;
    }

    .hero-content {
        position: relative;
        z-index: 2;
        color: white;
    }

    .hero-title {
        font-size: 3.5rem;
        font-weight: 800;
        margin-bottom: 1.5rem;
        text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    }

    .hero-subtitle {
        font-size: 1.4rem;
        margin-bottom: 2rem;
        opacity: 0.95;
    }

    .hero-cta {
        background: var(--accent-color);
        border: none;
        padding: 15px 35px;
        font-size: 1.1rem;
        font-weight: 600;
        border-radius: 50px;
        transition: all 0.3s ease;
        box-shadow: 0 4px 15px rgba(245, 158, 11, 0.3);
    }

    .hero-cta:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 25px rgba(245, 158, 11, 0.4);
    }

    /* Search Bar */
    .search-section {
        margin-top: -50px;
        position: relative;
        z-index: 3;
    }

    .search-card {
        background: white;
        border-radius: 15px;
        padding: 2rem;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    }

    .search-input {
        border: 2px solid #e2e8f0;
        border-radius: 50px;
        padding: 15px 25px;
        font-size: 1.1rem;
        transition: all 0.3s ease;
    }

    .search-input:focus {
        border-color: var(--primary-color);
        box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    }

    .search-btn {
        border-radius: 50px;
        padding: 15px 30px;
        background: var(--primary-color);
        border: none;
    }

    /* Statistics */
    .stats-section {
        background: #f8fafc;
        padding: 4rem 0;
    }

    .stat-card {
        background: white;
        border-radius: 15px;
        padding: 2rem;
        text-align: center;
        transition: all 0.3s ease;
        border: 1px solid #e2e8f0;
        height: 100%;
    }

    .stat-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    }

    .stat-number {
        font-size: 2.5rem;
        font-weight: 800;
        color: var(--primary-color);
        margin-bottom: 0.5rem;
    }

    .stat-label {
        color: var(--secondary-color);
        font-weight: 500;
    }

    /* Modules Section */
    .modules-section {
        padding: 5rem 0;
    }

    .section-title {
        font-size: 2.5rem;
        font-weight: 700;
        text-align: center;
        margin-bottom: 3rem;
        color: #1e293b;
    }

    .module-card {
        background: white;
        border-radius: 15px;
        padding: 2rem;
        text-align: center;
        transition: all 0.3s ease;
        border: 1px solid #e2e8f0;
        height: 100%;
        text-decoration: none;
        color: inherit;
    }

    .module-card:hover {
        transform: translateY(-10px);
        box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
        text-decoration: none;
        color: inherit;
    }

    .module-icon {
        font-size: 3rem;
        margin-bottom: 1.5rem;
        padding: 20px;
        border-radius: 50%;
        display: inline-block;
    }

    .module-title {
        font-size: 1.4rem;
        font-weight: 600;
        margin-bottom: 1rem;
    }

    .module-description {
        color: var(--secondary-color);
        font-size: 0.95rem;
    }

    /* Collections Section */
    .collections-section {
        background: #f8fafc;
        padding: 5rem 0;
    }

    .book-card {
        background: white;
        border-radius: 15px;
        overflow: hidden;
        transition: all 0.3s ease;
        border: 1px solid #e2e8f0;
        height: 100%;
    }

    .book-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    }

    .book-image {
        height: 200px;
        background: var(--gradient-bg);
        display: flex;
        align-items: center;
        justify-content: center;
        color: white;
        font-size: 3rem;
    }

    .book-content {
        padding: 1.5rem;
    }

    .book-title {
        font-size: 1.1rem;
        font-weight: 600;
        margin-bottom: 0.5rem;
        line-height: 1.4;
        height: 2.8rem;
        overflow: hidden;
    }

    .book-author {
        color: var(--secondary-color);
        font-size: 0.9rem;
        margin-bottom: 0.5rem;
    }

    .book-publisher {
        color: var(--secondary-color);
        font-size: 0.85rem;
    }

    /* News Section */
    /* Pastikan kartu mengisi tinggi kolom sepenuhnya */
    .news-card {
        background: #fff;
        border-radius: 12px;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
        overflow: hidden;
        height: 100%;
        /* Agar tinggi kartu sama rata dalam satu baris */
        display: flex;
        flex-direction: column;
        transition: transform 0.3s ease;
        border: 1px solid #eee;
    }

    .news-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    }

    /* Pengaturan Gambar */
    .news-image {
        width: 100%;
        height: 200px;
        /* Tinggi gambar fix agar seragam */
        background-size: cover;
        background-position: center;
        background-repeat: no-repeat;
    }

    /* Wrapper konten agar bisa diatur jaraknya */
    .news-content {
        padding: 20px;
        display: flex;
        flex-direction: column;
        flex-grow: 1;
        /* Mengisi sisa ruang agar footer ada di bawah */
    }

    /* Membatasi Judul (PENTING) */
    .news-title {
        font-size: 1.1rem;
        font-weight: 700;
        color: #333;
        margin-bottom: 10px;
        line-height: 1.4;

        /* Teknik memotong teks judul max 2 baris */
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        text-overflow: ellipsis;
        height: 2.8em;
        /* Menjaga tinggi area judul tetap konsisten */
    }

    /* Membatasi Cuplikan Teks (Excerpt) */
    .news-excerpt {
        font-size: 0.9rem;
        color: #666;
        margin-bottom: 20px;
        line-height: 1.6;

        /* Teknik memotong teks deskripsi max 3 baris */
        display: -webkit-box;
        -webkit-line-clamp: 3;
        -webkit-box-orient: vertical;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    /* Footer Card (User & Tanggal) */
    .news-meta {
        margin-top: auto;
        /* Mendorong meta ke paling bawah */
        padding-top: 15px;
        border-top: 1px solid #f0f0f0;
        display: flex;
        justify-content: space-between;
        font-size: 0.8rem;
        color: #999;
    }

    .news-meta i {
        color: #0d6efd;
        /* Warna icon primary */
    }

    /* Footer */
    .footer {
        background: #1e293b;
        color: white;
        padding: 3rem 0 1rem;
    }

    .footer-content {
        margin-bottom: 2rem;
    }

    .footer-title {
        font-size: 1.5rem;
        font-weight: 600;
        margin-bottom: 1rem;
    }

    .footer-text {
        color: #94a3b8;
        line-height: 1.6;
    }

    /* Responsive */
    @media (max-width: 768px) {
        .hero-title {
            font-size: 2.5rem;
        }

        .hero-subtitle {
            font-size: 1.2rem;
        }

        .section-title {
            font-size: 2rem;
        }
    }

    /* Color variants for modules */
    .bg-primary {
        background: rgba(37, 99, 235, 0.1);
        color: var(--primary-color);
    }

    .bg-success {
        background: rgba(5, 150, 105, 0.1);
        color: var(--success-color);
    }

    .bg-info {
        background: rgba(6, 182, 212, 0.1);
        color: #0891b2;
    }

    .bg-warning {
        background: rgba(245, 158, 11, 0.1);
        color: var(--accent-color);
    }

    .bg-danger {
        background: rgba(239, 68, 68, 0.1);
        color: #dc2626;
    }

    .bg-secondary {
        background: rgba(100, 116, 139, 0.1);
        color: var(--secondary-color);
    }