.library-page {
    padding: 3rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
    animation: fadeIn 0.6s ease-out;
}

.library-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 3rem;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.header-title-section h1 {
    font-family: var(--nexus-font-serif);
    font-size: 2.8rem;
    font-weight: 700;
    margin: 0 0 0.5rem 0;
    background: linear-gradient(135deg, var(--nexus-text) 0%, rgba(255, 255, 255, 0.7) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.5px;
}

.header-title-section .subtitle {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.6);
    margin: 0;
}

.add-book-trigger {
    background: var(--nexus-neon) !important;
    color: #000000 !important;
    border: none !important;
    box-shadow: 0 4px 15px var(--nexus-primary-glow) !important;
    font-weight: 600 !important;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
    border-radius: var(--radius-md) !important;
}

.add-book-trigger:hover {
    transform: translateY(-2px) !important;
    box-shadow: 0 8px 20px rgba(0, 255, 153, 0.5) !important;
    filter: brightness(1.1);
}

.btn-icon {
    margin-right: 0.5rem;
    font-weight: bold;
}

/* Books Grid */
.books-grid, .loading-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
}

.book-card {
    cursor: pointer;
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
    border-radius: var(--radius-lg);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.book-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(800px circle at var(--x, 0) var(--y, 0), rgba(255, 255, 255, 0.06), transparent 40%);
    opacity: 0;
    transition: opacity 0.5s;
    pointer-events: none;
}

.book-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3), 0 0 2px rgba(255, 255, 255, 0.1) inset;
    border-color: rgba(0, 255, 153, 0.2);
}

.book-card:hover::before {
    opacity: 1;
}

.book-cover-container {
    position: relative;
    height: 380px;
    background: rgba(0, 0, 0, 0.2);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.book-cover {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.book-card:hover .book-cover {
    transform: scale(1.08);
}

.cover-overlay {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
    backdrop-filter: blur(4px);
}

.book-card:hover .cover-overlay {
    opacity: 1;
}

.read-action {
    color: #ffffff;
    font-weight: 600;
    font-size: 1.1rem;
    padding: 0.75rem 1.5rem;
    border: 2px solid #ffffff;
    border-radius: 30px;
    transform: translateY(10px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.book-card:hover .read-action {
    transform: translateY(0);
    background: #ffffff;
    color: #0f172a;
}

.book-details {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    background: rgba(15, 23, 42, 0.3);
}

.book-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0 0 0.5rem 0;
    color: var(--nexus-text);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-family: var(--nexus-font-sans);
}

.book-author {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.5);
    margin: 0 0 1rem 0;
}

.new-badge {
    align-self: flex-start;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--nexus-primary);
    background: rgba(0, 255, 153, 0.15);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    border: 1px solid rgba(0, 255, 153, 0.3);
}

/* Book Progress Bar */
.book-progress-section {
    margin-top: auto;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.progress-bar {
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--nexus-neon) 0%, #00ccff 100%);
    border-radius: 3px;
}

.progress-text {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.4);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Empty State */
.empty-state-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 5rem 2rem;
    text-align: center;
    border-radius: var(--radius-lg);
}

.empty-icon-pulse {
    margin-bottom: 2rem;
    color: rgba(255, 255, 255, 0.2);
    animation: pulse 3s infinite alternate;
}

.empty-state-container h3 {
    font-family: var(--nexus-font-serif);
    font-size: 1.8rem;
    margin: 0 0 0.5rem 0;
    color: var(--nexus-text);
}

.empty-state-container p {
    color: rgba(255, 255, 255, 0.5);
    max-width: 400px;
    margin: 0 0 2rem 0;
}

.restricted-info {
    font-size: 0.85rem;
    font-style: italic;
    color: rgba(255, 255, 255, 0.35) !important;
}

/* Skeleton Loading */
.skeleton-card {
    border-radius: var(--radius-lg);
    overflow: hidden;
    height: 480px;
    background: rgba(255, 255, 255, 0.02) !important;
    border: 1px solid rgba(255, 255, 255, 0.05) !important;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15) !important;
    opacity: 0.5;
}

.skeleton-cover {
    height: 380px;
    background: linear-gradient(90deg, rgba(255,255,255,0.04) 25%, rgba(255,255,255,0.12) 50%, rgba(255,255,255,0.04) 75%) !important;
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

.skeleton-details {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.skeleton-line {
    background: linear-gradient(90deg, rgba(255,255,255,0.04) 25%, rgba(255,255,255,0.12) 50%, rgba(255,255,255,0.04) 75%) !important;
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
    border-radius: 4px;
}

.skeleton-line.title {
    height: 20px;
    width: 80%;
}

.skeleton-line.author {
    height: 14px;
    width: 50%;
}

.skeleton-line.progress {
    height: 8px;
    width: 100%;
    margin-top: auto;
}

.library-loading-container {
    position: relative;
    width: 100%;
}

.library-loading-container .loader-card {
    position: absolute;
    top: 180px;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 10;
    display: flex;
    align-items: center;
    gap: 1.25rem;
    padding: 1.25rem 2.25rem;
    border-radius: 40px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4), 0 0 1px rgba(255, 255, 255, 0.15) inset;
    background: rgba(15, 23, 42, 0.75);
    backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    animation: scaleIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.spinner-glow {
    width: 60px;
    height: 60px;
    border: 3px solid rgba(0, 255, 153, 0.1);
    border-radius: 50%;
    border-top-color: var(--nexus-neon);
    animation: spin 1s cubic-bezier(0.55, 0.055, 0.675, 0.19) infinite;
    box-shadow: 0 0 15px rgba(0, 255, 153, 0.2);
}

.spinner-glow.small {
    width: 28px;
    height: 28px;
    border-width: 2px;
}

.loader-text {
    font-family: var(--nexus-font-sans);
    font-weight: 500;
    color: #ffffff;
    font-size: 0.95rem;
    letter-spacing: 0.2px;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
    0% { transform: scale(0.95); opacity: 0.6; }
    100% { transform: scale(1.05); opacity: 0.9; }
}

@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes scaleIn {
    from { transform: translate(-50%, -50%) scale(0.9); opacity: 0; }
    to { transform: translate(-50%, -50%) scale(1); opacity: 1; }
}
