:root {
    --skolib-primary: #1d4ed8;
    --skolib-primary-hover: #0f2f88;
    --skolib-accent: #e6f7ff;
    --skolib-text: #333;
    --skolib-text-light: #666;
    --skolib-border: #e2e8f0;
    --skolib-white: #ffffff;
    --skolib-shadow: 0 4px 6px -1px androidx.core.graphics.ColorUtils.setAlphaComponent(#000, 25), 0 2px 4px -1px androidx.core.graphics.ColorUtils.setAlphaComponent(#000, 15);
}

.skolib-library-wrapper {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

/* --- Categories --- */
.skolib-library-categories {
    margin-bottom: 30px;
}
.skolib-library-categories h3 {
    font-size: 1.25rem;
    margin-bottom: 15px;
    color: var(--skolib-primary);
    border-bottom: 2px solid var(--skolib-accent);
    padding-bottom: 5px;
    display: inline-block;
}
.skolib-cat-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}
.skolib-cat-list li {
    margin: 0;
}
.skolib-cat-list li a {
    display: inline-block;
    padding: 8px 16px;
    background-color: var(--skolib-white);
    border: 1px solid var(--skolib-border);
    border-radius: 20px;
    text-decoration: none;
    color: var(--skolib-primary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.2s;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}
.skolib-cat-list li a:hover {
    background-color: var(--skolib-primary);
    color: white;
    border-color: var(--skolib-primary);
    transform: translateY(-2px);
}

/* --- Search Form --- */
.skolib-search-container {
    background: var(--skolib-white);
    padding: 25px;
    border-radius: 8px;
    border: 1px solid var(--skolib-border);
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    margin-bottom: 40px;
}

.skolib-simple-search {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    align-items: center;
}

.skolib-simple-search input[type="text"] {
    flex-grow: 1;
    padding: 12px 15px;
    border: 1px solid var(--skolib-border);
    border-radius: 6px;
    font-size: 1rem;
    min-width: 200px;
}

.skolib-simple-search button {
    padding: 12px 24px;
    border: none;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    font-size: 1rem;
    transition: background 0.2s;
}

.skolib-simple-search button[type="submit"] {
    background-color: var(--skolib-primary);
    color: white;
}
.skolib-simple-search button[type="submit"]:hover {
    background-color: var(--skolib-primary-hover);
}

#skolib-toggle-advanced {
    background-color: #f1f5f9;
    color: var(--skolib-text);
    border: 1px solid var(--skolib-border);
}
#skolib-toggle-advanced:hover {
    background-color: #e2e8f0;
}

/* Advanced Search */
.skolib-advanced-search {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid #eee;
    display: none; /* JS will toggle */
    animation: fadeIn 0.3s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.skolib-advanced-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.skolib-form-group {
    display: flex;
    flex-direction: column;
}

.skolib-form-group label {
    margin-bottom: 5px;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--skolib-text-light);
}

.skolib-form-group input,
.skolib-form-group select {
    padding: 10px;
    border: 1px solid var(--skolib-border);
    border-radius: 5px;
    font-size: 0.95rem;
    background-color: #fff;
    width: 100%;
    box-sizing: border-box; /* Fix width issues */
}

/* --- Results Grid --- */
.skolib-books-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 25px;
}

.skolib-book-card {
    background: #fff;
    border: 1px solid var(--skolib-border);
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
    display: flex;
    flex-direction: column;
}

.skolib-book-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.skolib-book-thumb {
    height: 280px;
    background: #f8fafc;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid #eee;
}

.skolib-type-badge {
    position: absolute;
    top: 10px;
    left: 10px;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: bold;
    z-index: 2;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.skolib-badge-book {
    background-color: var(--skolib-primary);
    color: #fff;
}
.skolib-badge-post {
    background-color: var(--skolib-success);
    color: #fff;
}
.skolib-article-card .skolib-book-thumb {
    height: 180px; /* Shorter thumb for articles */
}

.skolib-book-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

.skolib-book-card:hover .skolib-book-thumb img {
    transform: scale(1.05);
}

.skolib-no-thumb {
    color: #94a3b8;
    font-weight: 500;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 20px;
}

.skolib-book-details {
    padding: 15px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.skolib-book-title {
    margin: 0 0 10px 0;
    font-size: 0.8rem;
    line-height: 1.4;
}
.skolib-book-title a {
    color: var(--skolib-text);
    text-decoration: none;
    font-weight: 700;
}
.skolib-book-title a:hover {
    color: var(--skolib-primary);
}

.skolib-book-meta {
    font-size: 0.9rem;
    color: var(--skolib-text-light);
    margin-bottom: 15px;
    flex-grow: 1;
}

.skolib-book-meta-item {
    margin-bottom: 4px;
    display: flex;
    align-items: baseline;
}
.skolib-book-meta-item strong {
    min-width: 60px;
    display: inline-block;
    color: var(--skolib-text);
    font-weight: 600;
}

/* Pagination */
.skolib-pagination {
    margin-top: 40px;
    text-align: center;
}
.skolib-pagination .page-numbers {
    display: inline-block;
    padding: 8px 12px;
    margin: 0 2px;
    border: 1px solid var(--skolib-border);
    border-radius: 4px;
    color: var(--skolib-primary);
    text-decoration: none;
    background: #fff;
}
.skolib-pagination .page-numbers.current,
.skolib-pagination .page-numbers:hover {
    background: var(--skolib-primary);
    color: #fff;
    border-color: var(--skolib-primary);
}

/* --- Single Book Page --- */
.skolib-single-book-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
    margin-top: 30px;
}

@media (min-width: 768px) {
    .skolib-single-book-container {
        grid-template-columns: 350px 1fr;
    }
}

.skolib-single-cover {
    background: #fff;
    padding: 10px;
    border: 1px solid var(--skolib-border);
    border-radius: 8px;
    box-shadow: var(--skolib-shadow);
    text-align: center;
}

.skolib-single-cover img {
    max-width: 100%;
    height: auto;
    border-radius: 4px;
}

.skolib-single-details h1 {
    font-size: 2rem;
    color: var(--skolib-primary);
    margin: 0 0 15px 0;
}

.skolib-single-meta {
    margin-bottom: 25px;
    font-size: 1.05rem;
}

.skolib-meta-row {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid #eee;
}
.skolib-meta-row:first-child {
    border-top: 1px solid #eee;
}
.skolib-meta-label {
    font-weight: 600;
    color: var(--skolib-text-light);
}
.skolib-meta-value {
    color: var(--skolib-text);
    text-align: right;
    font-weight: 500;
}

.skolib-single-actions {
    margin-top: 30px;
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.skolib-btn-lg {
    padding: 15px 30px;
    font-size: 1.1rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: transform 0.2s;
}
.skolib-btn-lg:hover {
    transform: translateY(-2px);
}

.skolib-btn-primary {
    background-color: var(--skolib-primary);
    color: #fff;
}
.skolib-btn-primary:hover {
    background-color: var(--skolib-primary-hover);
    color: #fff;
}

.skolib-single-description {
    margin-top: 40px;
    background: #fff;
    padding: 25px;
    border-radius: 8px;
    border: 1px solid var(--skolib-border);
}
.skolib-single-description h3 {
    margin-top: 0;
    margin-bottom: 15px;
    color: var(--skolib-primary);
    border-bottom: 2px solid var(--skolib-accent);
    padding-bottom: 5px;
    display: inline-block;
}

/* Reader */
.skolib-reader-wrapper {
    margin-top: 40px;
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    border: 1px solid var(--skolib-border);
    box-shadow: var(--skolib-shadow);
}
.skolib-reader-wrapper iframe {
    width: 100%;
    height: 800px;
    border: 1px solid #eee;
    border-radius: 4px;
}

/* login-reg-search */
.skolib-search-container{
    text-align: center; 
    padding: 40px; 
    background: #fff; 
    border: 1px solid #e2e8f0; 
    border-radius: 8px;
}
.dashicons dashicons-lock{
    font-size: 64px; 
    width: 64px; 
    height: 64px; 
    color: #cbd5e1;
}
.skolib-container-btn{
    margin-top: 30px; 
    display: flex; 
    justify-content: center; 
    gap: 15px;
}
.log-reg{
    padding: 10px 25px;
}
.ht-title{
    margin-top: 20px!important;
    color: #334155;
}
.pt-title{
    font-size: 1.1em; 
    color: #64748b; 
    max-width: 600px; 
    margin: 10px auto;
}

@media (max-width: 767px) {
    .skolib-library-wrapper {
        padding: 15px;
    }
    .skolib-search-container{
        padding: 15px;
    }
    .skolib-simple-search input[type="text"]{
        font-size: 0.9rem;
    }
    .skolib-cat-list{
        padding-left: 0em!important;
    }
    .pt-title {
        font-size: 0.9rem;
        color: #64748b;
        max-width: 600px;
        margin: 10px auto;
    }
    .log-reg {
    font-size: 14px !important;
    }
    .skolib-single-details h1 {
        font-size: 1.1rem;
    }
}