@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');

:root {
    --lib-primary: #1E3A8A;
    --lib-secondary: #F59E0B;
    --lib-bg: #f4f7f6;
    --lib-text: #333;
    --lib-card-bg: #fff;
}

.library-body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--lib-bg);
    color: var(--lib-text);
    margin: 0;
    padding: 0;
}

.lib-header {
    background-color: var(--lib-primary);
    color: #fff;
    padding: 40px 0;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    background-image: linear-gradient(135deg, var(--lib-primary), #0a1f52);
}

.lib-header h1 {
    margin: 0;
    font-size: 2.5rem;
    font-weight: 600;
    color: white;
}

.lib-header p {
    color: #a3b8cc;
    margin-top: 10px;
}

.lib-search-container {
    max-width: 600px;
    margin: -25px auto 40px auto;
    padding: 0 20px;
    position: relative;
    z-index: 10;
}

.lib-search {
    width: 100%;
    padding: 15px 20px 15px 50px;
    border-radius: 30px;
    border: none;
    font-family: 'Poppins', sans-serif;
    font-size: 1.1rem;
    outline: none;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s;
}

.lib-search:focus {
    box-shadow: 0 5px 20px rgba(245, 158, 11, 0.4);
}

.lib-layout {
    display: flex;
    gap: 30px;
    max-width: 1300px;
    margin: 0 auto;
    padding: 20px;
    min-height: 60vh;
}

.lib-sidebar {
    width: 280px;
    flex-shrink: 0;
    background: white;
    border-radius: 12px;
    padding: 25px 20px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    height: fit-content;
    border-top: 4px solid var(--lib-primary);
}

.category-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.category-list li {
    margin-bottom: 8px;
}

.category-list a {
    display: flex;
    align-items: center;
    padding: 10px 15px;
    color: var(--lib-text);
    text-decoration: none;
    border-radius: 6px;
    transition: all 0.2s;
    font-weight: 500;
    font-size: 0.95rem;
}

.category-list a:hover,
.category-list a.active {
    background: rgba(30, 58, 138, 0.05);
    color: var(--lib-primary);
    border-left: 3px solid var(--lib-secondary);
}

.lib-main {
    flex-grow: 1;
}

.lib-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
}

.lib-card {
    background-color: var(--lib-card-bg);
    border-radius: 10px;
    padding: 20px;
    text-align: left;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s, box-shadow 0.3s;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    display: flex;
    align-items: flex-start;
    gap: 15px;
    border: 1px solid #eee;
    border-top: 4px solid transparent;
}

.lib-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.08);
    border-top: 4px solid var(--lib-secondary);
}

.lib-card-icon {
    font-size: 2.5rem;
    color: var(--lib-secondary);
    transition: transform 0.3s;
    margin-top: 2px;
}

.lib-card:hover .lib-card-icon {
    transform: scale(1.1);
}

.lib-card-details {
    flex-grow: 1;
    overflow: hidden;
}

.lib-card .lib-name {
    font-size: 1.05rem;
    font-weight: 600;
    margin-top: 0;
    margin-bottom: 8px;
    color: var(--lib-primary);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    word-wrap: break-word;
}

.lib-card .lib-folder {
    font-size: 0.8rem;
    color: #666;
    font-weight: 500;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

@media (max-width: 900px) {
    .lib-layout {
        flex-direction: column;
    }

    .lib-sidebar {
        width: 100%;
        margin-bottom: 20px;
    }
}

/* Viewer styles */
.viewer-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    background: #2a2a2a;
    font-family: 'Poppins', sans-serif;
}

.viewer-header {
    background: var(--lib-primary);
    color: white;
    padding: 12px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.5);
    z-index: 10;
}

.viewer-title {
    font-size: 1.1rem;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 400px;
}

.viewer-controls {
    display: flex;
    gap: 15px;
    align-items: center;
}

.viewer-btn {
    background: rgba(255, 255, 255, 0.15);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    padding: 6px 14px;
    cursor: pointer;
    font-family: 'Poppins', sans-serif;
    font-size: 0.9rem;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 5px;
}

.viewer-btn:hover {
    background: var(--lib-secondary);
    border-color: var(--lib-secondary);
}

.viewer-page-info {
    font-size: 0.9rem;
    font-weight: 500;
}

.viewer-body {
    flex-grow: 1;
    overflow: auto;
    display: flex;
    justify-content: center;
    padding: 20px;
    background: #525659;
}

#pdf-canvas {
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.5);
    margin-bottom: 40px;
}

/* Responsive */
@media (max-width: 768px) {
    .viewer-title {
        display: none;
    }

    .viewer-controls {
        flex-wrap: wrap;
        justify-content: center;
        width: 100%;
        gap: 10px;
    }

    .viewer-header {
        flex-direction: column;
        gap: 10px;
    }

    .lib-header h1 {
        font-size: 2rem;
    }
}