/* ============================================
   Library Page Styles
   ============================================ */

.library-header {
    padding-top: 120px;
    padding-bottom: 40px;
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.library-controls {
    display: flex;
    flex-direction: column;
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
}

.search-box {
    display: flex;
    align-items: center;
    gap: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 16px 24px;
    transition: var(--transition-fast);
}

.search-box:focus-within {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(0, 255, 136, 0.1);
}

.search-box svg {
    color: var(--text-muted);
    flex-shrink: 0;
}

.search-box input {
    flex: 1;
    background: transparent;
    border: none;
    font-size: 1.1rem;
    color: var(--text-primary);
    outline: none;
}

.search-box input::placeholder {
    color: var(--text-muted);
}

.category-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}

.filter-btn {
    padding: 10px 20px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-fast);
}

.filter-btn:hover {
    border-color: var(--text-muted);
    color: var(--text-primary);
}

.filter-btn.active {
    background: var(--gradient-primary);
    border-color: transparent;
    color: var(--bg-primary);
}

/* Library Main */
.library-main {
    background: var(--bg-secondary);
    min-height: 60vh;
}

.library-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: 24px;
}

/* Library Card */
.library-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 28px;
    transition: var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.library-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-glow);
}

.library-card.hidden {
    display: none;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 16px;
}

.card-icon {
    font-size: 2.5rem;
}

.card-meta {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.category-badge {
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.category-badge.validation {
    background: rgba(0, 255, 136, 0.15);
    color: var(--accent-primary);
}

.category-badge.format {
    background: rgba(0, 212, 255, 0.15);
    color: var(--accent-secondary);
}

.category-badge.security {
    background: rgba(255, 0, 170, 0.15);
    color: var(--accent-tertiary);
}

.category-badge.parsing {
    background: rgba(255, 170, 0, 0.15);
    color: var(--accent-warning);
}

.category-badge.web {
    background: rgba(189, 147, 249, 0.15);
    color: #bd93f9;
}

.tag {
    padding: 4px 10px;
    background: var(--bg-tertiary);
    border-radius: 50px;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.library-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.library-card > p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.pattern-box {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 16px;
    margin-bottom: 16px;
    overflow-x: auto;
}

.pattern-box code {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent-primary);
    word-break: break-all;
    white-space: pre-wrap;
}

.card-examples {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 20px;
    flex-grow: 1;
}

.example {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    padding: 6px 10px;
    background: var(--bg-tertiary);
    border-radius: 4px;
}

.example.valid {
    color: var(--accent-primary);
    border-left: 3px solid var(--accent-primary);
}

.example.invalid {
    color: #ff5555;
    border-left: 3px solid #ff5555;
}

.card-actions {
    display: flex;
    gap: 12px;
    margin-top: auto;
}

.action-btn {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition-fast);
}

.action-btn.copy {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.action-btn.copy:hover {
    border-color: var(--text-muted);
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

.action-btn.copy.copied {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: var(--bg-primary);
}

.action-btn.try {
    background: var(--gradient-primary);
    border: none;
    color: var(--bg-primary);
}

.action-btn.try:hover {
    opacity: 0.9;
    transform: translateX(2px);
}

/* Load More */
.load-more-container {
    text-align: center;
    padding: 40px 0;
}

.patterns-count {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.patterns-count span {
    color: var(--accent-primary);
    font-weight: 600;
}

/* No Results */
.no-results {
    grid-column: 1 / -1;
    text-align: center;
    padding: 80px 20px;
    color: var(--text-muted);
}

.no-results svg {
    margin-bottom: 20px;
    opacity: 0.5;
}

.no-results h3 {
    color: var(--text-primary);
    margin-bottom: 10px;
}

/* Active nav link */
.nav-link.active {
    color: var(--accent-primary);
}

.nav-link.active::after {
    width: 100%;
}

/* Responsive */
@media (max-width: 768px) {
    .library-grid {
        grid-template-columns: 1fr;
    }
    
    .category-filters {
        overflow-x: auto;
        justify-content: flex-start;
        padding-bottom: 10px;
    }
    
    .filter-btn {
        white-space: nowrap;
    }
}