:root{--primary:#007bff;--primary-dark:#0056b3;--secondary:#6c757d;--success:#28a745;--danger:#dc3545;--warning:#ffc107;--info:#17a2b8;--light:#f8f9fa;--dark:#343a40;--white:#ffffff;--text-primary:#212529;--text-secondary:#6c757d;--text-muted:#9ca3af;--border-color:#dee2e6;--shadow:0 2px 8px rgba(0,0,0,0.1);--shadow-lg:0 10px 40px rgba(0,0,0,0.15);--radius:8px;--radius-lg:12px}*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}html{font-size:16px;scroll-behavior:smooth;scrollbar-gutter:stable}body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Oxygen,Ubuntu,sans-serif;line-height:1.6;color:var(--text-primary);background:var(--white);min-height:100vh;display:flex;flex-direction:column}h1,h2,h3,h4,h5,h6{font-weight:600;line-height:1.3;margin-bottom:1rem}h1{font-size:2.5rem}h2{font-size:2rem}h3{font-size:1.5rem}h4{font-size:1.25rem}p{margin-bottom:1rem}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}.skip-link{position:absolute;left:0;top:0;z-index:2000;transform:translateY(-120%);padding:0.75rem 1.25rem;background:var(--primary,#007bff);color:#fff;font-weight:600;border-radius:0 0 8px 0;transition:transform 0.15s ease}.skip-link:focus{transform:translateY(0);outline:3px solid #fff;outline-offset:-3px;text-decoration:none}a:focus-visible,button:focus-visible,[tabindex]:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid var(--primary,#007bff);outline-offset:2px;border-radius:2px}#site-main:focus,#site-main:focus-visible{outline:none}.theme-toggle-btn{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;padding:0;font-size:1.05rem;color:var(--text-primary,#212529);background:transparent;border:1px solid var(--border-color,#dee2e6);border-radius:var(--radius,8px);cursor:pointer;transition:background 0.2s ease,border-color 0.2s ease,color 0.2s ease}.theme-toggle-btn:hover{background:var(--light,#f1f3f5)}.nav-actions .language-btn,.nav-actions .theme-toggle-btn,.nav-actions .btn{height:42px;box-sizing:border-box}.container{max-width:1200px;margin:0 auto;padding:0 1.5rem}.container-narrow{max-width:800px}.site-main{flex:1}.site-header{background:var(--white);border-bottom:1px solid var(--border-color);position:sticky;top:0;z-index:100}.main-nav{display:flex;justify-content:space-between;align-items:center;padding:0.875rem 1.5rem;gap:1.5rem}.logo{display:flex;align-items:center;gap:0.5rem;font-weight:700;font-size:1.25rem;color:var(--text-primary);flex-shrink:0}.logo:hover{text-decoration:none;color:var(--primary)}.nav-spacer{flex:1}.nav-actions{display:flex;align-items:center;gap:1rem;flex-shrink:0}.language-selector{position:relative}.language-btn{display:inline-flex;align-items:center;gap:0.5rem;padding:0.625rem 0.9rem;background:transparent;border:1px solid var(--border-color);border-radius:var(--radius);color:var(--text-primary);font-size:1rem;font-weight:500;line-height:1;cursor:pointer;transition:all 0.2s ease}.nb-logo-svg{height:30px;width:auto;display:block}.nb-logo-svg .lg-blue{fill:#004efe}.nb-logo-svg .lg-grey{fill:#636363}.flag-icon{width:22px;height:16px;border-radius:3px;flex-shrink:0;box-shadow:0 0 0 1px rgba(0,0,0,0.12);object-fit:cover}.language-caret{opacity:0.6}.lang-flag-name{display:inline-flex;align-items:center;gap:0.6rem}.language-btn:hover{background:var(--light);border-color:var(--text-secondary)}.language-btn svg{flex-shrink:0}.language-code{font-weight:600}.language-dropdown{position:absolute;top:calc(100% + 0.5rem);right:0;width:280px;max-height:400px;background:var(--white);border:1px solid var(--border-color);border-radius:var(--radius);box-shadow:var(--shadow-lg);opacity:0;visibility:hidden;transform:translateY(-0.5rem);transition:all 0.2s ease;z-index:200;overflow:hidden}.language-dropdown.show{opacity:1;visibility:visible;transform:translateY(0)}.language-dropdown-header{padding:0.75rem 1rem;border-bottom:1px solid var(--border-color);font-weight:600;font-size:0.875rem;color:var(--text-secondary)}.language-dropdown-content{max-height:320px;overflow-y:auto;padding:0}.language-option{display:flex;justify-content:space-between;align-items:center;gap:0.75rem;width:100%;padding:0.8rem 1rem;border:0;border-radius:0;background:transparent;color:var(--text-primary);font-family:inherit;font-size:0.95rem;text-align:left;cursor:pointer;-webkit-appearance:none;appearance:none;transition:background 0.15s ease}.language-option-form{display:block;width:100%}.language-option-form + .language-option-form .language-option{border-top:1px solid var(--border-color)}.language-option:hover{background:var(--light);text-decoration:none}.language-option.active{background:var(--primary);color:var(--white)}.language-option.active .lang-code{opacity:0.85}.language-option .lang-name{font-weight:500}.language-option .lang-code{font-size:0.8rem;font-weight:600;opacity:0.6}.btn{display:inline-flex;align-items:center;justify-content:center;gap:0.5rem;padding:0.625rem 1.25rem;font-size:1rem;font-weight:500;border:none;border-radius:var(--radius);cursor:pointer;transition:all 0.2s ease;text-decoration:none}.btn:hover{text-decoration:none}.btn-primary{background:var(--primary);color:var(--white)}.btn-primary:hover{background:var(--primary-dark)}.btn-success{background:var(--success);color:var(--white)}.btn-success:hover{background:#218838}.btn-outline{background:transparent;border:1px solid var(--border-color);color:var(--text-primary)}.btn-outline:hover{background:var(--light)}.btn-lg{padding:0.875rem 1.75rem;font-size:1.125rem}.btn-sm{padding:0.375rem 0.75rem;font-size:0.875rem}.btn-block{width:100%}.hero{padding:6rem 0;text-align:center;background:linear-gradient(135deg,var(--light) 0%,var(--white) 100%)}.hero h1{font-size:3rem;margin-bottom:1rem}.hero-subtitle{font-size:1.25rem;color:var(--text-secondary);margin-bottom:2rem}.hero-actions{display:flex;justify-content:center;gap:1rem;flex-wrap:wrap}.features{padding:4rem 0}.features h2{text-align:center;margin-bottom:3rem}.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:2rem}.feature-card{padding:2rem;background:var(--white);border:1px solid var(--border-color);border-radius:var(--radius);text-align:center;transition:box-shadow 0.2s ease}.feature-card:hover{box-shadow:var(--shadow)}.feature-icon{font-size:3rem;margin-bottom:1rem}.feature-card h3{margin-bottom:0.5rem}.feature-card p{color:var(--text-secondary);margin-bottom:0}.auth-section{padding:4rem 0;display:flex;align-items:center;justify-content:center;min-height:calc(100vh - 200px)}.auth-card{width:100%;max-width:420px;padding:2rem;background:var(--white);border:1px solid var(--border-color);border-radius:var(--radius);box-shadow:var(--shadow)}.auth-card h1{text-align:center;margin-bottom:2rem}.auth-form{display:flex;flex-direction:column;gap:1rem}.auth-links{text-align:center;margin-top:1.5rem;color:var(--text-secondary)}.form-group{display:flex;flex-direction:column;gap:0.375rem}.form-group label{font-weight:500;font-size:0.875rem}.form-group input,.form-group select,.form-group textarea{padding:0.75rem 1rem;border:1px solid var(--border-color);border-radius:var(--radius);font-size:1rem;transition:border-color 0.2s ease}.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:var(--primary)}.form-control{padding:0.75rem 1rem;border:1px solid var(--border-color);border-radius:var(--radius);font-size:1rem;width:100%;transition:border-color 0.2s ease}.form-control:focus{outline:none;border-color:var(--primary)}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.form-checkbox{flex-direction:row;align-items:center;gap:0.5rem}.form-checkbox input[type="checkbox"]{width:auto}.form-errors{padding:1rem;background:#fff5f5;border:1px solid var(--danger);border-radius:var(--radius)}.error{color:var(--danger);font-size:0.875rem}.messages-container{padding:1rem 0}.messages-container:empty{display:none;padding:0}.message{padding:1rem 1.5rem;border-radius:var(--radius);margin-bottom:0.5rem;display:flex;justify-content:space-between;align-items:center;animation:messageSlideIn 0.3s ease}@keyframes messageSlideIn{from{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.message-success{background:#d4edda;color:#155724}.message-error{background:#f8d7da;color:#721c24}.message-info{background:#d1ecf1;color:#0c5460}.message-warning{background:#fff3cd;color:#856404}.message-close{background:none;border:none;font-size:1.25rem;cursor:pointer;opacity:0.5}.message-close:hover{opacity:1}.legal-page{padding:4rem 0}.legal-page h1{margin-bottom:2rem}.legal-content h2{margin-top:2rem;margin-bottom:1rem;font-size:1.5rem}.legal-content h3{margin-top:1.5rem;margin-bottom:0.75rem;font-size:1.25rem}.legal-content h4{margin-top:1rem;margin-bottom:0.5rem;font-size:1.1rem}.legal-content ul{margin-left:1.5rem;margin-bottom:1rem}.last-updated{color:var(--text-secondary);font-style:italic;margin-bottom:2rem}.error-page{padding:6rem 0;text-align:center}.error-content h1{font-size:8rem;color:var(--danger);margin-bottom:1rem}.error-content h2{margin-bottom:1rem}.error-content p{color:var(--text-secondary);margin-bottom:2rem}.site-footer{background:var(--light);border-top:1px solid var(--border-color);padding:2rem 0;margin-top:auto}.footer-content{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1rem}.footer-info{color:var(--text-secondary)}.footer-links{display:flex;flex-wrap:wrap;gap:0.75rem 1.5rem}.footer-links a{color:var(--text-secondary)}.footer-links a:hover{color:var(--primary)}.text-success{color:var(--success)}.text-danger{color:var(--danger)}.text-muted{color:var(--text-secondary)}.text-center{text-align:center}@media (max-width:768px){.main-nav{padding:0.75rem 1rem;gap:0.75rem}.nav-actions{gap:0.5rem}.language-btn .language-code{display:none}.language-btn{padding:0.5rem}.language-dropdown{position:fixed;top:auto;bottom:0;left:0;right:0;width:100%;max-height:70vh;border-radius:var(--radius) var(--radius) 0 0;transform:translateY(100%)}.language-dropdown.show{transform:translateY(0)}.btn{padding:0.5rem 0.875rem;font-size:0.875rem}.hero h1{font-size:2rem}.hero{padding:4rem 0}.form-row{grid-template-columns:1fr}.footer-content{flex-direction:column;text-align:center}.footer-links{justify-content:center}.footer-links a{display:inline-block;padding:0.5rem 0.4rem}}