@import"https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap";/*! tailwindcss v4.2.1 | MIT License | https://tailwindcss.com */@layer properties{@supports (((-webkit-hyphens:none)) and (not (margin-trim:inline))) or ((-moz-orient:inline) and (not (color:rgb(from red r g b)))){*,:before,:after,::backdrop{--tw-border-style:solid}}}@layer theme{:root,:host{--font-sans:ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--spacing:.25rem;--radius-sm:.25rem;--radius-md:.375rem;--radius-lg:.5rem;--radius-xl:.75rem;--shadow-lg:0 10px 15px -3px #0000001a, 0 4px 6px -4px #0000001a;--default-transition-duration:.15s;--default-transition-timing-function:cubic-bezier(.4, 0, .2, 1);--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:var(--default-mono-font-family,ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace);font-feature-settings:var(--default-mono-font-feature-settings,normal);font-variation-settings:var(--default-mono-font-variation-settings,normal);font-size:1em}small{font-size:80%}sub,sup{vertical-align:baseline;font-size:75%;line-height:0;position:relative}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}:-moz-focusring{outline:auto}progress{vertical-align:baseline}summary{display:list-item}ol,ul,menu{list-style:none}img,svg,video,canvas,audio,iframe,embed,object{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}button,input,select,optgroup,textarea{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}::file-selector-button{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}:where(select:is([multiple],[size])) optgroup{font-weight:bolder}:where(select:is([multiple],[size])) optgroup option{padding-inline-start:20px}::file-selector-button{margin-inline-end:4px}::placeholder{opacity:1}@supports (not ((-webkit-appearance:-apple-pay-button))) or (contain-intrinsic-size:1px){::placeholder{color:currentColor}@supports (color:color-mix(in lab,red,red)){::placeholder{color:color-mix(in oklab,currentcolor 50%,transparent)}}}textarea{resize:vertical}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-date-and-time-value{min-height:1lh;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-datetime-edit{padding-block:0}::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-day-field{padding-block:0}::-webkit-datetime-edit-hour-field{padding-block:0}::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-millisecond-field{padding-block:0}::-webkit-datetime-edit-meridiem-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}button,input:where([type=button],[type=reset],[type=submit]){appearance:button}::file-selector-button{appearance:button}::-webkit-inner-spin-button{height:auto}::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}}@layer components;@layer utilities{.invisible{visibility:hidden}.visible{visibility:visible}.absolute{position:absolute}.fixed{position:fixed}.relative{position:relative}.static{position:static}.start{inset-inline-start:var(--spacing)}.end{inset-inline-end:var(--spacing)}.block{display:block}.contents{display:contents}.flex{display:flex}.hidden{display:none}.inline-block{display:inline-block}.resize{resize:both}.justify-center{justify-content:center}.border{border-style:var(--tw-border-style);border-width:1px}.break-all{word-break:break-all}.uppercase{text-transform:uppercase}.transition{transition-property:color,background-color,border-color,outline-color,text-decoration-color,fill,stroke,--tw-gradient-from,--tw-gradient-via,--tw-gradient-to,opacity,box-shadow,transform,translate,scale,rotate,filter,-webkit-backdrop-filter,backdrop-filter,display,content-visibility,overlay,pointer-events;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration))}}:root{--bg-primary:#0f1117;--bg-secondary:#161922;--bg-surface:#1c1f2e;--bg-elevated:#242838;--text-primary:#e8eaed;--text-secondary:#9aa0a6;--text-muted:#5f6368;--accent-primary:#4db6ac;--accent-secondary:#ffb74d;--accent-glow:#4db6ac26;--nb-mechanics:#4db6ac;--nb-mechanics-accent:#ffb74d;--nb-thermo:#ff7043;--nb-thermo-accent:#90a4ae;--nb-em:#5c6bc0;--nb-em-accent:#ffee58;--nb-waves:#26c6da;--nb-waves-accent:#ef5350;--nb-quantum:#ab47bc;--nb-quantum-accent:#c6ff00;--border-subtle:#ffffff0f;--border-default:#ffffff1a;--radius-sm:6px;--radius-md:10px;--radius-lg:16px;--radius-xl:24px;--shadow-sm:0 1px 3px #0000004d;--shadow-md:0 4px 12px #0006;--shadow-lg:0 8px 32px #00000080}*{box-sizing:border-box;margin:0;padding:0}html{background:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;font-family:Inter,system-ui,-apple-system,sans-serif;line-height:1.6}body{min-height:100vh}code,pre,.mono{font-family:JetBrains Mono,monospace}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--text-muted);border-radius:3px}a{color:var(--accent-primary);text-decoration:none;transition:color .2s}a:hover{color:var(--accent-secondary)}.katex-display{background:var(--bg-elevated);border-radius:var(--radius-md);border:1px solid var(--border-subtle);margin:1rem 0;padding:1rem 1.5rem;overflow-x:auto}.katex{color:var(--text-primary);font-size:1.15em}.nav{background:var(--bg-secondary);border-bottom:1px solid var(--border-subtle);z-index:100;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);justify-content:space-between;align-items:center;padding:1rem 2rem;display:flex;position:sticky;top:0}.nav-brand{color:var(--text-primary);align-items:center;gap:.75rem;font-size:1.15rem;font-weight:700;display:flex}.nav-brand span{background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary));-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text}.nav-links{gap:.25rem;display:flex}.nav-link{border-radius:var(--radius-sm);color:var(--text-secondary);padding:.5rem 1rem;font-size:.9rem;font-weight:500;transition:all .2s}.nav-link:hover,.nav-link.active{background:var(--accent-glow);color:var(--accent-primary)}.auth-dropdown{align-items:center;display:inline-flex;position:relative}.auth-profile-trigger{cursor:pointer;background:0 0;border:none;justify-content:center;align-items:center;margin:0;padding:0;line-height:1;display:flex}.auth-avatar{aspect-ratio:1;border:2px solid var(--border-default);object-fit:cover;min-width:32px;max-width:32px;min-height:32px;max-height:32px;transition:border-color .2s,box-shadow .2s;display:block;border-radius:50%!important;width:32px!important;height:32px!important}.auth-avatar:hover{border-color:var(--accent-primary);box-shadow:0 0 0 2px #4db6ac33}.auth-avatar-fallback{aspect-ratio:1;background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary));border:2px solid var(--border-default);color:#fff;justify-content:center;align-items:center;min-width:32px;max-width:32px;min-height:32px;max-height:32px;font-size:.85rem;font-weight:700;line-height:1;display:flex;border-radius:50%!important;width:32px!important;height:32px!important}.auth-dropdown-menu{background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);z-index:200;min-width:220px;animation:.15s ease-out fadeIn;position:absolute;top:calc(100% + 8px);right:0;overflow:hidden}.auth-dropdown-header{border-bottom:1px solid var(--border-subtle);flex-direction:column;gap:.15rem;padding:.85rem 1rem;display:flex}.auth-dropdown-header strong{color:var(--text-primary);font-size:.85rem}.auth-dropdown-header span{color:var(--text-secondary);word-break:break-all;font-size:.75rem}.auth-dropdown-item{text-align:left;width:100%;color:var(--text-primary);cursor:pointer;background:0 0;border:none;padding:.65rem 1rem;font-family:inherit;font-size:.85rem;transition:background .2s;display:block}.auth-dropdown-item:hover{background:var(--bg-elevated)}.auth-dropdown-item.sign-out{color:#ef5350}.auth-dropdown-item.sign-out:hover{background:#ef53501a}.page-container{max-width:960px;margin:0 auto;padding:2rem 1.5rem}.page-container.wide{max-width:100%;padding:0}.card{background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);padding:1.5rem;transition:border-color .2s,box-shadow .2s}.card:hover{border-color:var(--border-default)}.upload-zone{border:2px dashed var(--border-default);border-radius:var(--radius-xl);text-align:center;cursor:pointer;background:var(--bg-surface);padding:3rem 2rem;transition:all .3s;position:relative}.upload-zone.drag-over{border-color:var(--accent-primary);background:var(--accent-glow);transform:scale(1.01)}.upload-zone:hover{border-color:var(--accent-primary);background:#4db6ac0d}.upload-zone .icon{opacity:.6;margin-bottom:1rem;font-size:3rem}.upload-zone h3{margin-bottom:.5rem;font-size:1.1rem;font-weight:600}.upload-zone p{color:var(--text-secondary);font-size:.85rem}.image-preview{border-radius:var(--radius-md);object-fit:contain;max-height:300px;margin:1rem auto;display:block}.btn{border-radius:var(--radius-md);cursor:pointer;border:none;align-items:center;gap:.5rem;padding:.65rem 1.5rem;font-family:inherit;font-size:.9rem;font-weight:600;transition:all .2s;display:inline-flex}.btn-primary{background:linear-gradient(135deg,var(--accent-primary),#3d9e94);color:#fff;box-shadow:0 2px 8px #4db6ac4d}.btn-primary:hover{transform:translateY(-1px);box-shadow:0 4px 16px #4db6ac66}.btn-primary:disabled{opacity:.5;cursor:not-allowed;transform:none}.btn-secondary{background:var(--bg-elevated);color:var(--text-primary);border:1px solid var(--border-default)}.btn-secondary:hover{background:var(--bg-surface);border-color:var(--accent-primary)}.tabs{gap:.25rem;margin-bottom:1.5rem;padding-bottom:2px;display:flex;overflow-x:auto}.tab{border-radius:var(--radius-sm);cursor:pointer;white-space:nowrap;color:var(--text-secondary);background:0 0;border:1px solid #0000;padding:.6rem 1rem;font-family:inherit;font-size:.85rem;font-weight:500;transition:all .2s}.tab:hover{background:var(--bg-elevated);color:var(--text-primary)}.tab.active{background:var(--accent-glow);color:var(--accent-primary);border-color:#4db6ac4d}.tab-content{animation:.3s fadeIn}@keyframes fadeIn{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}.level-text{color:var(--text-primary);font-size:.95rem;line-height:1.75}.level-transcript{background:var(--bg-elevated);border-radius:var(--radius-md);border-left:3px solid var(--accent-primary);color:var(--text-secondary);margin-top:1rem;padding:1rem;font-size:.85rem;font-style:italic}.var-table{border-collapse:collapse;width:100%;margin:1rem 0;font-size:.85rem}.var-table th{text-align:left;background:var(--bg-elevated);color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em;padding:.6rem 1rem;font-size:.7rem;font-weight:600}.var-table th:first-child{border-radius:var(--radius-sm) 0 0 var(--radius-sm)}.var-table th:last-child{border-radius:0 var(--radius-sm) var(--radius-sm) 0}.var-table td{border-bottom:1px solid var(--border-subtle);color:var(--text-primary);padding:.6rem 1rem}.var-table .symbol{color:var(--accent-primary);font-family:JetBrains Mono,monospace;font-weight:600}.tag-pill{background:var(--bg-elevated);color:var(--text-secondary);border:1px solid var(--border-subtle);border-radius:100px;align-items:center;gap:.25rem;padding:.25rem .65rem;font-size:.75rem;font-weight:500;transition:all .2s;display:inline-flex}.spinner{border:3px solid var(--border-default);border-top-color:var(--accent-primary);border-radius:50%;width:40px;height:40px;margin:0 auto;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.loading-state{text-align:center;padding:3rem 2rem}.loading-state p{color:var(--text-secondary);margin-top:1rem;font-size:.9rem}.modal-overlay{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:200;background:#000000b3;justify-content:center;align-items:center;padding:2rem;animation:.2s fadeIn;display:flex;position:fixed;inset:0}.modal-content{background:var(--bg-secondary);border:1px solid var(--border-subtle);border-radius:var(--radius-xl);width:100%;max-width:800px;max-height:85vh;box-shadow:var(--shadow-lg);padding:2rem;position:relative;overflow-y:auto}.modal-close{background:var(--bg-elevated);border:1px solid var(--border-subtle);width:36px;height:36px;color:var(--text-secondary);cursor:pointer;border-radius:50%;justify-content:center;align-items:center;font-size:1.1rem;transition:all .2s;display:flex;position:absolute;top:1rem;right:1rem}.modal-close:hover{background:var(--bg-surface);color:var(--text-primary)}.result-header{align-items:center;gap:1rem;margin-bottom:1.5rem;display:flex}.result-icon{border-radius:var(--radius-md);background:var(--bg-elevated);border:1px solid var(--border-subtle);object-fit:contain;width:64px;height:64px}.result-header h2{font-size:1.4rem;font-weight:700;line-height:1.3}.result-header .observed-object{color:var(--text-secondary);font-size:.9rem}.formula-section{background:var(--bg-elevated);border-radius:var(--radius-md);border:1px solid var(--border-subtle);margin:1.5rem 0;padding:1.25rem}.formula-section .formula-label{text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);margin-bottom:.75rem;font-size:.75rem;font-weight:600}.formula-section .formula-display{text-align:center;padding:.5rem 0}.related-examples{margin-top:1.5rem}.related-examples h4{text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);margin-bottom:.75rem;font-size:.8rem}.related-examples ul{flex-wrap:wrap;gap:.5rem;list-style:none;display:flex}.related-examples li{background:var(--bg-elevated);color:var(--text-secondary);border:1px solid var(--border-subtle);border-radius:100px;padding:.35rem .85rem;font-size:.8rem}.graph-container{background:var(--bg-primary);width:100vw;height:calc(100vh - 57px);position:relative}.graph-legend{background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-md);z-index:10;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);padding:1rem;position:absolute;bottom:1.5rem;left:1.5rem}.graph-legend h4{text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);margin-bottom:.5rem;font-size:.7rem}.graph-legend-item{color:var(--text-secondary);align-items:center;gap:.5rem;padding:.2rem 0;font-size:.75rem;display:flex}.graph-legend-dot{border-radius:50%;flex-shrink:0;width:10px;height:10px}.empty-state{text-align:center;color:var(--text-secondary);padding:4rem 2rem}.empty-state .icon{opacity:.4;margin-bottom:1rem;font-size:3rem}.empty-state h3{color:var(--text-primary);margin-bottom:.5rem;font-size:1.1rem;font-weight:600}.tts-controls{align-items:center;gap:.5rem;margin-top:.75rem;display:flex}.tts-btn{cursor:pointer;background:var(--bg-elevated);color:var(--text-secondary);border:1px solid var(--border-subtle);border-radius:100px;align-items:center;gap:.4rem;padding:.45rem 1rem;font-family:inherit;font-size:.8rem;font-weight:600;transition:all .2s;display:inline-flex}.tts-btn:hover{background:var(--bg-surface);color:var(--text-primary);border-color:var(--tts-accent,var(--accent-primary))}.tts-btn--active{background:var(--tts-accent,var(--accent-primary))}@supports (color:color-mix(in lab,red,red)){.tts-btn--active{background:color-mix(in srgb,var(--tts-accent,var(--accent-primary)) 15%,transparent)}}.tts-btn--active{color:var(--tts-accent,var(--accent-primary));border-color:var(--tts-accent,var(--accent-primary))}@supports (color:color-mix(in lab,red,red)){.tts-btn--active{border-color:color-mix(in srgb,var(--tts-accent,var(--accent-primary)) 40%,transparent)}}.tts-btn-label{font-size:.78rem}.tts-stop-btn{background:var(--bg-elevated);border:1px solid var(--border-subtle);width:28px;height:28px;color:var(--text-muted);cursor:pointer;border-radius:50%;justify-content:center;align-items:center;font-size:.7rem;transition:all .2s;display:inline-flex}.tts-stop-btn:hover{color:#ef5350;background:#ef535026;border-color:#ef535066}.waveform-bars{align-items:center;gap:2px;height:20px;display:flex}.waveform-bars span{background:var(--accent-primary);border-radius:2px;width:3px;height:4px;animation:.6s ease-in-out infinite alternate waveform;display:block}.waveform-bars--paused span{animation-play-state:paused}@keyframes waveform{0%{opacity:.4;height:4px}to{opacity:1;height:16px}}@media(max-width:768px){.nav{flex-wrap:wrap;justify-content:space-between;gap:1rem;padding:.75rem 1rem}.nav-brand{flex-shrink:0;order:1}.auth-container{order:2;margin-left:auto}.nav-links{flex-wrap:wrap;order:3;justify-content:center;width:100%;margin-top:.5rem}.nav-link{padding:.4rem .75rem;font-size:.85rem}.page-container,.card{padding:1rem}.upload-zone{padding:2rem 1rem}.result-header{text-align:center;flex-direction:column;gap:.75rem}.result-icon{width:80px;height:80px;margin:0 auto}.var-table{white-space:nowrap;display:block;overflow-x:auto}.tts-controls{flex-wrap:wrap;justify-content:center}.tabs{padding-bottom:6px}.tab{padding:.5rem .75rem;font-size:.8rem}.modal-content{max-height:90vh;margin:1rem;padding:1.5rem 1rem}.modal-close{top:.5rem;right:.5rem}.katex-display{padding:1rem .5rem;font-size:.9em}.graph-legend{padding:.75rem;bottom:1rem;left:1rem;right:1rem}}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}