:root{--bg-primary: #0f172a;--bg-secondary: #1e293b;--bg-tertiary: #334155;--text-primary: #f8fafc;--text-secondary: #cbd5e1;--text-muted: #94a3b8;--accent-primary: #3b82f6;--accent-hover: #2563eb;--accent-success: #10b981;--accent-error: #ef4444;--accent-warning: #f59e0b;--border-subtle: #334155;--border-focus: #3b82f6;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--radius-sm: .25rem;--radius-md: .375rem;--radius-lg: .5rem;--radius-xl: .75rem;--font-sans: "Inter", system-ui, -apple-system, sans-serif;--font-mono: "Roboto Mono", monospace}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%;width:100%;background-color:var(--bg-primary);color:var(--text-primary);font-family:var(--font-sans);overflow-x:hidden}h1,h2,h3,h4,h5,h6{font-weight:600;letter-spacing:-.025em}.glass-panel{background:#1e293bb3;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-xl);box-shadow:var(--shadow-lg)}.app-container{display:flex;height:100vh;width:100vw;overflow:hidden}.controls-pane{flex:0 0 400px;max-width:400px;height:100%;overflow-y:auto;padding:1.5rem;border-right:1px solid var(--border-subtle);background-color:var(--bg-secondary);display:flex;flex-direction:column;gap:1.5rem;z-index:10}.visualizer-pane{flex:1;position:relative;height:100%;overflow:hidden;background-color:var(--bg-primary)}.input-group{display:flex;flex-direction:column;gap:.5rem}.input-label{font-size:.875rem;font-weight:500;color:var(--text-secondary)}.math-input{background-color:var(--bg-tertiary);border:1px solid var(--border-subtle);color:var(--text-primary);font-family:var(--font-mono);padding:.5rem .75rem;border-radius:var(--radius-md);font-size:1rem;transition:all .2s ease;width:100%;text-align:center}.math-input:focus{outline:none;border-color:var(--border-focus);box-shadow:0 0 0 2px #3b82f64d}.math-input.error{border-color:var(--accent-error);box-shadow:0 0 0 2px #ef444433}.matrix-grid{display:inline-grid;gap:.5rem;padding:.5rem .75rem;margin:0 .25rem;position:relative}.matrix-grid:before,.matrix-grid:after{content:"";position:absolute;top:0;bottom:0;width:10px;border:2px solid var(--text-muted)}.matrix-grid:before{left:0;border-right:none;border-radius:6px 0 0 6px}.matrix-grid:after{right:0;border-left:none;border-radius:0 6px 6px 0}.matrix-grid[data-size="2"]{grid-template-columns:repeat(2,60px)}.matrix-grid[data-size="3"]{grid-template-columns:repeat(3,60px)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.625rem 1rem;background-color:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border-subtle);border-radius:var(--radius-md);font-size:.875rem;font-weight:500;cursor:pointer;transition:all .2s ease}.btn:hover{background-color:var(--bg-secondary);border-color:var(--text-muted)}.btn-primary{background-color:var(--accent-primary);color:#fff;border-color:transparent}.btn-primary:hover{background-color:var(--accent-hover);border-color:transparent}.btn-icon{padding:.5rem}.select-input{-webkit-appearance:none;-moz-appearance:none;appearance:none;background-color:var(--bg-tertiary);border:1px solid var(--border-subtle);color:var(--text-primary);padding:.625rem 1rem;border-radius:var(--radius-md);font-size:.875rem;width:100%;cursor:pointer;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23cbd5e1' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 1rem center;background-size:16px}.select-input:focus{outline:none;border-color:var(--border-focus)}.segmented-control{display:flex;background-color:var(--bg-primary);padding:.25rem;border-radius:var(--radius-md);border:1px solid var(--border-subtle)}.segment-btn{flex:1;text-align:center;padding:.5rem;font-size:.875rem;cursor:pointer;border:none;background:transparent;color:var(--text-muted);border-radius:var(--radius-sm);transition:all .2s}.segment-btn.active{background-color:var(--bg-tertiary);color:var(--text-primary);box-shadow:var(--shadow-sm)}.math-breakdown{padding:1rem;background-color:var(--bg-primary);border-radius:var(--radius-lg);border:1px solid var(--border-subtle);font-family:var(--font-mono);font-size:.9rem;overflow-x:auto;line-height:1.6}.math-step{margin-bottom:.75rem;display:flex;align-items:center;gap:.75rem}.math-step:last-child{margin-bottom:0}.math-expression{display:inline-flex;align-items:center;gap:.5rem}.visualizer-overlay{position:absolute;top:1.5rem;left:1.5rem;z-index:20;display:flex;gap:1rem}.overlay-panel{padding:1rem;min-width:200px}@media (max-width: 768px){.app-container{flex-direction:column-reverse}.controls-pane{max-width:100%;height:50vh;border-right:none;border-top:1px solid var(--border-subtle)}.visualizer-pane{height:50vh}}