:root{--bg: #0f172a;--bg-secondary: #1e293b;--bg-tertiary: #334155;--text: #f1f5f9;--text-muted: #94a3b8;--primary: #3b82f6;--primary-hover: #2563eb;--accent: #10b981;--error: #ef4444;--muted: #64748b;--border: #475569;--focus-ring: #60a5fa}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif;background-color:var(--bg);color:var(--text);line-height:1.6}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--focus-ring);outline-offset:2px}.app{min-height:100vh;display:flex;flex-direction:column}.skip-link{position:absolute;top:-100%;left:50%;transform:translate(-50%);background-color:var(--primary);color:#fff;padding:.75rem 1.5rem;border-radius:0 0 8px 8px;text-decoration:none;font-weight:500;z-index:1000;transition:top .2s}.skip-link:focus{top:0;outline:none}.header{background-color:var(--bg-secondary);border-bottom:1px solid var(--border);padding:1rem 2rem;position:relative}.header-content{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center}.logo{display:flex;align-items:center;gap:.75rem;text-decoration:none;color:var(--text);font-weight:600;font-size:1.25rem}.logo-icon{width:32px;height:32px}.nav{display:flex;gap:1.5rem}.nav a{color:var(--text-muted);text-decoration:none;transition:color .2s}.nav a:hover{color:var(--primary)}.mobile-menu-btn{display:none;flex-direction:column;justify-content:space-between;width:28px;height:20px;background:transparent;border:none;cursor:pointer;padding:0;z-index:1001}.hamburger-line{display:block;width:100%;height:2px;background-color:var(--text);transition:transform .3s,opacity .3s}.mobile-menu-btn.open .hamburger-line:nth-child(1){transform:translateY(9px) rotate(45deg)}.mobile-menu-btn.open .hamburger-line:nth-child(2){opacity:0}.mobile-menu-btn.open .hamburger-line:nth-child(3){transform:translateY(-9px) rotate(-45deg)}@media(max-width:768px){.mobile-menu-btn{display:flex}.nav{position:fixed;top:0;left:0;right:0;bottom:0;background-color:var(--bg-secondary);flex-direction:column;align-items:center;justify-content:center;gap:2rem;transform:translate(100%);transition:transform .3s ease-in-out;z-index:1000}.nav.nav-open{transform:translate(0)}.nav a{font-size:1.25rem}}.main-content{flex:1;max-width:1200px;margin:0 auto;padding:2rem;width:100%}.footer{background-color:var(--bg-secondary);border-top:1px solid var(--border);padding:1.5rem 2rem;text-align:center;color:var(--text-muted);font-size:.875rem}.footer .version{margin-top:.5rem;font-size:.75rem;color:var(--muted)}.floating-feedback-btn{position:fixed;bottom:1.5rem;right:1.5rem;display:flex;align-items:center;justify-content:center;width:56px;height:56px;background:linear-gradient(135deg,#38bdf8,#3b82f6);color:#fff;border-radius:50%;text-decoration:none;box-shadow:0 4px 16px #3b82f666;transition:transform .2s,box-shadow .2s;z-index:100}.floating-feedback-btn:hover{transform:scale(1.05);box-shadow:0 6px 20px #3b82f680}.floating-feedback-btn:active{transform:scale(.98)}.landing-page{max-width:900px;margin:0 auto}.hero{text-align:center;padding:3rem 0}.version-badge{display:inline-block;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;padding:.25rem .75rem;border-radius:20px;font-size:.75rem;font-weight:600;margin-bottom:1rem}.hero h1{font-size:2.5rem;margin-bottom:1rem;background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.hero-subtitle{font-size:1.25rem;color:var(--text-muted);max-width:600px;margin:0 auto}.features{margin:3rem 0}.features h2{margin-bottom:1.5rem;font-size:1.5rem}.tool-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:1.5rem}@media(max-width:900px){.tool-cards{grid-template-columns:1fr}}.tool-card{background-color:var(--bg-secondary);border:1px solid var(--border);border-radius:12px;padding:1.5rem;text-decoration:none;color:var(--text);transition:border-color .2s,transform .2s,box-shadow .2s;display:flex;flex-direction:column}.tool-card:hover{border-color:var(--primary);transform:translateY(-2px);box-shadow:0 8px 24px #0000004d}.tool-illustration{background-color:var(--bg-tertiary);border-radius:8px;padding:1rem;margin-bottom:1.25rem;display:flex;align-items:center;justify-content:center;min-height:180px}.config-illustration{width:100%;max-width:200px;height:auto}.tool-info{flex:1;display:flex;flex-direction:column}.tool-card h3{font-size:1.25rem;margin-bottom:.5rem}.tool-card p{color:var(--text-muted);margin-bottom:1rem;font-size:.9rem;line-height:1.5}.tool-card ul{list-style:none;margin-bottom:1rem;flex:1}.tool-card li{color:var(--text-muted);font-size:.85rem;padding:.2rem 0}.tool-card li:before{content:"•";color:var(--accent);margin-right:.5rem}.tool-link{color:var(--primary);font-weight:500;font-size:.95rem;margin-top:auto}.how-it-works{margin:3rem 0}.how-it-works h2{margin-bottom:1.5rem;font-size:1.5rem}.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.5rem}.step{background-color:var(--bg-secondary);border-radius:8px;padding:1.5rem}.step-number{width:32px;height:32px;background:linear-gradient(135deg,var(--primary),var(--accent));border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:600;margin-bottom:1rem}.step h3{font-size:1rem;margin-bottom:.5rem}.step p{color:var(--text-muted);font-size:.875rem}.info{margin:3rem 0;padding:2rem;background-color:var(--bg-secondary);border-radius:12px}.info h2{margin-bottom:1rem;font-size:1.25rem}.info p{color:var(--text-muted);margin-bottom:1rem}.info p:last-child{margin-bottom:0}.feedback-page{max-width:700px;margin:0 auto}.feedback-page h1{font-size:2rem;margin-bottom:.5rem}.feedback-form{background-color:var(--bg-secondary);border-radius:12px;padding:2rem;margin-top:1.5rem}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem;margin-bottom:1.5rem}@media(max-width:600px){.form-row{grid-template-columns:1fr;gap:1rem}}.form-group{display:flex;flex-direction:column;gap:.5rem}.form-group:last-child{margin-bottom:1.5rem}.form-group label{font-weight:500;font-size:.9rem;color:var(--text)}.form-group .required{color:var(--error)}.form-group input,.form-group select,.form-group textarea{background-color:var(--bg-tertiary);border:1px solid var(--border);border-radius:6px;padding:.75rem 1rem;color:var(--text);font-size:.9rem;font-family:inherit;transition:border-color .2s,box-shadow .2s}.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #3b82f633}.form-group input::placeholder,.form-group textarea::placeholder{color:var(--muted)}.form-group textarea{resize:vertical;min-height:120px}.form-group select{cursor:pointer;-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394a3b8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 1rem center;padding-right:2.5rem}.form-hint{font-size:.75rem;color:var(--muted)}.form-actions{display:flex;gap:1rem;margin-top:.5rem}.feedback-success{background-color:var(--bg-secondary);border-radius:12px;padding:3rem 2rem;text-align:center;max-width:500px;margin:2rem auto}.feedback-success h1{color:var(--accent);margin-bottom:1rem}.feedback-success p{color:var(--text-muted);margin-bottom:1rem}.feedback-success .btn{margin-top:1rem}.not-found-page{max-width:600px;margin:0 auto;text-align:center;padding:3rem 1rem}.not-found-page h1{font-size:2.5rem;margin-bottom:1rem;color:var(--error)}.not-found-page>p{color:var(--text-muted);margin-bottom:2rem}.not-found-links{background-color:var(--bg-secondary);border-radius:12px;padding:2rem;margin-bottom:2rem;text-align:left}.not-found-links h2{font-size:1.25rem;margin-bottom:1rem}.not-found-links ul{list-style:none}.not-found-links li{margin-bottom:.75rem}.not-found-links a{color:var(--primary);text-decoration:none}.not-found-links a:hover{text-decoration:underline}.calculator-page{max-width:1000px;margin:0 auto}.calculator-page h1{font-size:2rem;margin-bottom:.5rem}.page-description{color:var(--text-muted);margin-bottom:1.5rem}.import-panel{background-color:var(--bg-secondary);border:1px solid var(--border);border-radius:12px;padding:1rem;margin-bottom:1.25rem}.import-panel h2{font-size:1.05rem;margin-bottom:.35rem}.import-description{color:var(--text-muted);font-size:.85rem;margin-bottom:.75rem}.import-textarea{width:100%;background-color:var(--bg-tertiary);border:1px solid var(--border);border-radius:8px;color:var(--text);padding:.75rem;font-family:SF Mono,Monaco,monospace;font-size:.8rem;resize:vertical;min-height:120px}.import-actions{margin-top:.75rem;display:flex;gap:.75rem}.import-success{margin-top:.75rem;color:#34d399;font-size:.85rem}.axis-selector,.unit-selector{background-color:var(--bg-secondary);border-radius:12px;padding:1.5rem;margin-bottom:1rem}.axis-selector>span,.unit-selector>span{display:block;font-weight:500;margin-bottom:.75rem}.axis-buttons,.unit-buttons{display:flex;gap:1rem}.axis-btn,.unit-btn{flex:1;padding:.75rem 1rem;border-radius:8px;border:2px solid var(--border);background-color:var(--bg-tertiary);color:var(--text-muted);font-size:.875rem;cursor:pointer;transition:all .2s}.axis-btn:hover,.unit-btn:hover{border-color:var(--primary);color:var(--text)}.axis-btn.active,.unit-btn.active{border-color:var(--primary);background-color:#3b82f626;color:var(--text)}@media(max-width:500px){.axis-buttons,.unit-buttons{flex-direction:column}}.calculator-layout{display:grid;grid-template-columns:1fr 1fr;gap:2rem}@media(max-width:768px){.calculator-layout{grid-template-columns:1fr}}.input-section{display:flex;flex-direction:column;gap:2rem}.axis-section{background-color:var(--bg-secondary);border-radius:12px;padding:1.5rem;border:1px solid var(--border)}.axis-section-legend{padding:0}.axis-section-legend h2,.axis-section h2{font-size:1.25rem;margin-bottom:.5rem}.axis-description{color:var(--text-muted);font-size:.875rem;margin-bottom:1rem}.point-input{margin-bottom:1rem;border:none;padding:0}.point-label{display:block;font-weight:500;margin-bottom:.5rem;color:var(--text-muted);font-size:.875rem;padding:0}.point-fields{display:grid;grid-template-columns:repeat(3,1fr);gap:.75rem}.field{display:flex;flex-direction:column;gap:.25rem}.field label{font-size:.75rem;color:var(--muted);font-weight:500}.field input{background-color:var(--bg-tertiary);border:1px solid var(--border);border-radius:6px;padding:.5rem .75rem;color:var(--text);font-size:.875rem;font-family:SF Mono,Monaco,monospace}.field input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #3b82f633}.field input::placeholder{color:var(--muted)}.button-group{display:flex;gap:1rem}.btn{padding:.75rem 1.5rem;border-radius:8px;font-weight:500;cursor:pointer;transition:all .2s;border:none;font-size:1rem}.btn:disabled{opacity:.6;cursor:not-allowed}.btn-primary{background-color:var(--primary);color:#fff}.btn-primary:hover:not(:disabled){background-color:var(--primary-hover)}.btn-secondary{background-color:var(--bg-tertiary);color:var(--text);border:1px solid var(--border)}.btn-secondary:hover:not(:disabled){background-color:var(--border)}.btn-sm{padding:.5rem 1rem;font-size:.875rem}.copy-btn{background-color:var(--bg-tertiary);border:1px solid var(--border);color:var(--text-muted);padding:.25rem .75rem;border-radius:4px;font-size:.75rem;cursor:pointer;transition:all .2s}.copy-btn:hover{border-color:var(--primary);color:var(--text)}.error-message{background-color:#ef44441a;border:1px solid var(--error);color:var(--error);padding:1rem;border-radius:8px;font-size:.875rem}.results-section{position:sticky;top:2rem}@media(max-width:768px){.results-section{position:static}}.results-display{background-color:var(--bg-secondary);border-radius:12px;padding:1.5rem}.results-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.5rem}.results-header h2,.results-header h3{font-size:1.25rem;margin:0}.results-display h3{font-size:1.25rem;margin-bottom:1.5rem}.results-grid{display:flex;flex-direction:column;gap:1.5rem}.result-section{background-color:var(--bg-tertiary);border-radius:8px;padding:1rem}.result-section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:.25rem}.result-section-header h3,.result-section-header h4{font-size:1rem;margin:0}.result-section h3,.result-section h4{font-size:1rem;margin-bottom:.25rem}.result-section>p{color:var(--text-muted);font-size:.75rem;margin-bottom:.75rem}.result-section.delta{background:linear-gradient(135deg,#3b82f61a,#10b9811a);border:1px solid var(--accent)}.result-section.quality{border:1px solid rgba(59,130,246,.35)}.result-values{display:flex;flex-direction:column;gap:.5rem}.result-row{display:flex;justify-content:space-between;font-family:SF Mono,Monaco,monospace;font-size:.875rem}.result-row .axis{color:var(--text-muted)}.result-row .value{color:var(--text);font-weight:500}.quality-badge{padding:.2rem .55rem;border-radius:999px;font-size:.72rem;font-weight:700;border:1px solid transparent}.quality-badge.excellent{background-color:#10b9812e;color:#34d399;border-color:#34d39980}.quality-badge.good{background-color:#3b82f62e;color:#93c5fd;border-color:#93c5fd80}.quality-badge.fair{background-color:#f59e0b33;color:#fcd34d;border-color:#fcd34d73}.quality-badge.warn{background-color:#ef444433;color:#fca5a5;border-color:#fca5a573}.results-placeholder{background-color:var(--bg-secondary);border:2px dashed var(--border);border-radius:12px;padding:3rem 2rem;text-align:center}.results-placeholder p{color:var(--text-muted)}.diagram-section{display:grid;grid-template-columns:1fr 1fr;gap:2rem;background-color:var(--bg-secondary);border-radius:12px;padding:1.5rem;margin-bottom:2rem}@media(max-width:768px){.diagram-section{grid-template-columns:1fr}}.setup-diagram{width:100%;max-width:400px;height:auto;margin:0 auto;border-radius:10px;background:radial-gradient(circle at 20% 10%,rgba(59,130,246,.08),transparent 45%),radial-gradient(circle at 80% 90%,rgba(16,185,129,.08),transparent 55%)}.diagram-instructions{display:flex;flex-direction:column;justify-content:center}.diagram-instructions h2,.diagram-instructions h3{font-size:1.1rem;margin-bottom:1rem;color:var(--text)}.diagram-instructions ol{margin:0 0 1rem 1.25rem;color:var(--text-muted);font-size:.9rem}.diagram-instructions li{margin-bottom:.5rem}.diagram-tip{background-color:var(--bg-tertiary);padding:.75rem 1rem;border-radius:8px;font-size:.85rem;color:var(--text-muted);border-left:3px solid var(--accent)}.diagram-tip strong{color:var(--accent)}.linuxcnc-install-page{max-width:900px;margin:0 auto}.linuxcnc-install-page h1{font-size:2rem;margin-bottom:.5rem}.install-card{background-color:var(--bg-secondary);border:1px solid var(--border);border-radius:12px;padding:1rem;margin-bottom:1rem}.install-card h2{font-size:1.05rem;margin-bottom:.5rem}.install-subtitle{margin-top:1rem;margin-bottom:.5rem;font-size:.95rem;color:var(--text)}.install-link{color:#93c5fd;word-break:break-all}.install-steps{margin-left:1.2rem;color:var(--text-muted);font-size:.9rem}.install-steps li{margin-bottom:.35rem}.command-list{display:flex;flex-direction:column;gap:.65rem}.command-row{background-color:var(--bg-tertiary);border:1px solid var(--border);border-radius:8px;padding:.65rem .75rem;display:flex;justify-content:space-between;align-items:center;gap:.75rem}.command-row code{color:var(--text);font-family:SF Mono,Monaco,monospace;font-size:.85rem}.install-pre{background-color:var(--bg-tertiary);border:1px solid var(--border);border-radius:8px;padding:.75rem;overflow-x:auto;color:var(--text);font-family:SF Mono,Monaco,monospace;font-size:.82rem}@media(max-width:640px){.command-row{flex-direction:column;align-items:stretch}}*:focus-visible{outline:2px solid var(--focus-ring);outline-offset:2px}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--focus-ring);outline-offset:2px}*:focus:not(:focus-visible){outline:none}@media print{.header,.footer,.skip-link,.mobile-menu-btn,.axis-selector,.unit-selector,.button-group,.diagram-section,.copy-btn,.btn,.floating-feedback-btn{display:none!important}body{background-color:#fff;color:#000}.app{min-height:auto}.main-content{max-width:none;padding:0}.calculator-page{max-width:none}.calculator-page h1{font-size:1.5rem;color:#000;-webkit-text-fill-color:black;background:none}.calculator-layout{display:block}.input-section{display:none}.results-section{position:static}.results-display{background-color:#fff;border:1px solid #ccc;padding:1rem;break-inside:avoid}.result-section{background-color:#f5f5f5;border:1px solid #ddd;break-inside:avoid}.result-section.delta{background:#f0f9ff;border-color:#10b981}.results-header{border-bottom:1px solid #ccc;padding-bottom:.5rem}.results-header h2,.results-header h3,.result-section h3,.result-section h4{color:#000}.result-section>p{color:#666}.result-row .axis{color:#666}.result-row .value{color:#000}.results-placeholder{display:none}}