:root{--bs-primary:#2563eb;--bs-primary-rgb:37, 99, 235;--bs-secondary:#475569;--bs-success:#059669;--bs-info:#0ea5e9;--bs-warning:#d97706;--bs-danger:#dc2626;--bs-light:#f8fafc;--bs-dark:#1e293b;--bs-purple:#7c3aed;--bs-gray-100:#f1f5f9;--bs-gray-200:#e2e8f0;--bs-gray-300:#cbd5e1;--bs-gray-400:#94a3b8;--bs-gray-500:#64748b;--bs-gray-600:#475569;--bs-gray-700:#334155;--bs-gray-800:#1e293b;--bs-gray-900:#0f172a;--table-border:var(--bs-gray-200);--table-bg-light:var(--bs-gray-100);--table-bg-lighter:#f8fafc;--table-text:var(--bs-gray-800);--text-xs:.75rem;--text-sm:.875rem;--text-base:1rem;--text-lg:1.125rem;--text-xl:1.25rem;--text-2xl:1.5rem;--text-3xl:1.875rem;--space-1:.25rem;--space-2:.5rem;--space-3:.75rem;--space-4:1rem;--space-5:1.25rem;--space-6:1.5rem;--space-8:2rem;--space-10:2.5rem;--space-12:3rem;--space-16:4rem;--radius-sm:.375rem;--radius-md:.5rem;--radius-lg:.75rem;--radius-xl:1rem;--shadow-sm:0 1px 2px rgba(0,0,0,.05);--shadow-md:0 4px 6px -1px rgba(0,0,0,.1), 0 2px 4px 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var(--ease-in-out)}.navbar-brand{font-weight:700;font-size:1.5rem;display:flex;align-items:center;gap:var(--space-2);background:linear-gradient(135deg,var(--bs-primary),var(--bs-purple));-webkit-background-clip:text;-webkit-text-fill-color:#fff0;background-clip:text}.navbar-brand::before{content:"📚";font-size:1.75rem;-webkit-text-fill-color:initial}.navbar .form-control{border-radius:var(--radius-lg);border:1px solid var(--bs-gray-300);padding:var(--space-3)}.navbar .form-control:focus{border-color:var(--bs-primary);box-shadow:0 0 0 3px rgb(37 99 235/.15)}.breadcrumb{background:rgb(255 255 255/.9);backdrop-filter:blur(10px);border-radius:var(--radius-xl);padding:var(--space-3) var(--space-5);box-shadow:2px 1px 0 2px rgb(0 0 0/.05);margin-bottom:var(--space-8);border:1px solid rgb(255 255 255/.8)}.breadcrumb-item+.breadcrumb-item::before{content:"›";color:var(--bs-primary);font-weight:700;font-size:1.1em}.breadcrumb a,.btn{font-weight:500;text-decoration:none}.breadcrumb a{color:var(--bs-gray-600);padding:var(--space-1) var(--space-2);border-radius:var(--radius-sm);transition:all .2s var(--ease-in-out)}.breadcrumb a:hover{color:var(--bs-primary);background:rgba(var(--bs-primary-rgb),.08)}.btn{border-radius:var(--radius-lg);padding:var(--space-3) var(--space-5);display:inline-flex;align-items:center;gap:var(--space-2);border:0;position:relative;overflow:hidden;transition:all .3s var(--ease-in-out)}.btn::before{content:"";position:absolute;top:50%;left:50%;width:0;height:0;background:rgb(255 255 255/.2);border-radius:50%;transform:translate(-50%,-50%);transition:all .6s}.btn:hover::before{width:260px;height:260px}.navigation.post-navigation .nav-links{display:flex!important;justify-content:space-between!important;align-items:center;flex-wrap:nowrap!important;gap:2rem;width:100%}.navigation.post-navigation .nav-links>*{white-space:nowrap!important;flex-shrink:1}.footer-bottom,.text-center{text-align:center}footer,footer 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