*,:before,:after{--tw-border-spacing-x: 0;--tw-border-spacing-y: 0;--tw-translate-x: 0;--tw-translate-y: 0;--tw-rotate: 0;--tw-skew-x: 0;--tw-skew-y: 0;--tw-scale-x: 1;--tw-scale-y: 1;--tw-pan-x: ;--tw-pan-y: ;--tw-pinch-zoom: ;--tw-scroll-snap-strictness: proximity;--tw-gradient-from-position: ;--tw-gradient-via-position: ;--tw-gradient-to-position: ;--tw-ordinal: ;--tw-slashed-zero: ;--tw-numeric-figure: ;--tw-numeric-spacing: ;--tw-numeric-fraction: ;--tw-ring-inset: ;--tw-ring-offset-width: 0px;--tw-ring-offset-color: #fff;--tw-ring-color: rgb(59 130 246 / .5);--tw-ring-offset-shadow: 0 0 #0000;--tw-ring-shadow: 0 0 #0000;--tw-shadow: 0 0 #0000;--tw-shadow-colored: 0 0 #0000;--tw-blur: ;--tw-brightness: ;--tw-contrast: ;--tw-grayscale: ;--tw-hue-rotate: ;--tw-invert: ;--tw-saturate: ;--tw-sepia: ;--tw-drop-shadow: ;--tw-backdrop-blur: ;--tw-backdrop-brightness: ;--tw-backdrop-contrast: ;--tw-backdrop-grayscale: ;--tw-backdrop-hue-rotate: ;--tw-backdrop-invert: ;--tw-backdrop-opacity: ;--tw-backdrop-saturate: ;--tw-backdrop-sepia: ;--tw-contain-size: ;--tw-contain-layout: ;--tw-contain-paint: ;--tw-contain-style: }::backdrop{--tw-border-spacing-x: 0;--tw-border-spacing-y: 0;--tw-translate-x: 0;--tw-translate-y: 0;--tw-rotate: 0;--tw-skew-x: 0;--tw-skew-y: 0;--tw-scale-x: 1;--tw-scale-y: 1;--tw-pan-x: ;--tw-pan-y: ;--tw-pinch-zoom: ;--tw-scroll-snap-strictness: proximity;--tw-gradient-from-position: ;--tw-gradient-via-position: ;--tw-gradient-to-position: ;--tw-ordinal: ;--tw-slashed-zero: ;--tw-numeric-figure: ;--tw-numeric-spacing: ;--tw-numeric-fraction: ;--tw-ring-inset: ;--tw-ring-offset-width: 0px;--tw-ring-offset-color: #fff;--tw-ring-color: rgb(59 130 246 / .5);--tw-ring-offset-shadow: 0 0 #0000;--tw-ring-shadow: 0 0 #0000;--tw-shadow: 0 0 #0000;--tw-shadow-colored: 0 0 #0000;--tw-blur: ;--tw-brightness: ;--tw-contrast: ;--tw-grayscale: ;--tw-hue-rotate: ;--tw-invert: ;--tw-saturate: ;--tw-sepia: ;--tw-drop-shadow: ;--tw-backdrop-blur: ;--tw-backdrop-brightness: ;--tw-backdrop-contrast: ;--tw-backdrop-grayscale: ;--tw-backdrop-hue-rotate: ;--tw-backdrop-invert: ;--tw-backdrop-opacity: ;--tw-backdrop-saturate: ;--tw-backdrop-sepia: ;--tw-contain-size: ;--tw-contain-layout: ;--tw-contain-paint: ;--tw-contain-style: }*,:before,:after{box-sizing:border-box;border-width:0;border-style:solid;border-color:#e5e7eb}:before,:after{--tw-content: ""}html,:host{line-height:1.5;-webkit-text-size-adjust:100%;-moz-tab-size:4;-o-tab-size:4;tab-size:4;font-family:Inter,ui-sans-serif,system-ui,sans-serif;font-feature-settings:normal;font-variation-settings:normal;-webkit-tap-highlight-color:transparent}body{margin:0;line-height:inherit}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;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier New,monospace;font-feature-settings:normal;font-variation-settings:normal;font-size:1em}small{font-size:80%}sub,sup{font-size:75%;line-height:0;position:relative;vertical-align:baseline}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}button,input,optgroup,select,textarea{font-family:inherit;font-feature-settings:inherit;font-variation-settings:inherit;font-size:100%;font-weight:inherit;line-height:inherit;letter-spacing:inherit;color:inherit;margin:0;padding:0}button,select{text-transform:none}button,input:where([type=button]),input:where([type=reset]),input:where([type=submit]){-webkit-appearance:button;background-color:transparent;background-image:none}:-moz-focusring{outline:auto}:-moz-ui-invalid{box-shadow:none}progress{vertical-align:baseline}::-webkit-inner-spin-button,::-webkit-outer-spin-button{height:auto}[type=search]{-webkit-appearance:textfield;outline-offset:-2px}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-file-upload-button{-webkit-appearance:button;font:inherit}summary{display:list-item}blockquote,dl,dd,h1,h2,h3,h4,h5,h6,hr,figure,p,pre{margin:0}fieldset{margin:0;padding:0}legend{padding:0}ol,ul,menu{list-style:none;margin:0;padding:0}dialog{padding:0}textarea{resize:vertical}input::-moz-placeholder,textarea::-moz-placeholder{opacity:1;color:#9ca3af}input::placeholder,textarea::placeholder{opacity:1;color:#9ca3af}button,[role=button]{cursor:pointer}:disabled{cursor:default}img,svg,video,canvas,audio,iframe,embed,object{display:block;vertical-align:middle}img,video{max-width:100%;height:auto}[hidden]:where(:not([hidden=until-found])){display:none}.visible{visibility:visible}.fixed{position:fixed}.table{display:table}.grid{display:grid}.ring{--tw-ring-offset-shadow: var(--tw-ring-inset) 0 0 0 var(--tw-ring-offset-width) var(--tw-ring-offset-color);--tw-ring-shadow: var(--tw-ring-inset) 0 0 0 calc(3px + var(--tw-ring-offset-width)) var(--tw-ring-color);box-shadow:var(--tw-ring-offset-shadow),var(--tw-ring-shadow),var(--tw-shadow, 0 0 #0000)}.blur{--tw-blur: blur(8px);filter:var(--tw-blur) var(--tw-brightness) var(--tw-contrast) var(--tw-grayscale) var(--tw-hue-rotate) var(--tw-invert) var(--tw-saturate) var(--tw-sepia) var(--tw-drop-shadow)}.filter{filter:var(--tw-blur) var(--tw-brightness) var(--tw-contrast) var(--tw-grayscale) var(--tw-hue-rotate) var(--tw-invert) var(--tw-saturate) var(--tw-sepia) var(--tw-drop-shadow)}.transition{transition-property:color,background-color,border-color,text-decoration-color,fill,stroke,opacity,box-shadow,transform,filter,backdrop-filter;transition-timing-function:cubic-bezier(.4,0,.2,1);transition-duration:.15s}*{box-sizing:border-box}:root{color-scheme:dark;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:#111316;color:#f4f7f5}body{min-width:320px;margin:0}button,input{font:inherit}button{cursor:pointer}button:disabled{cursor:wait;opacity:.68}.app-shell{min-height:100vh;padding:18px;color:#f4f7f5;background:radial-gradient(circle at 18% 12%,rgba(20,184,166,.16),transparent 26%),radial-gradient(circle at 72% 18%,rgba(251,191,36,.11),transparent 24%),radial-gradient(circle at 82% 78%,rgba(244,63,94,.1),transparent 27%),linear-gradient(135deg,#121413,#191b1c 48%,#101411)}.app-shell.light{color:#18221e;background:radial-gradient(circle at 18% 12%,rgba(20,184,166,.13),transparent 26%),radial-gradient(circle at 72% 18%,rgba(234,179,8,.13),transparent 24%),radial-gradient(circle at 82% 78%,rgba(37,99,235,.09),transparent 27%),linear-gradient(135deg,#f6faf7,#edf4f0,#f8fbff)}.top-bar,.control-dock,.learning-panel,.info-card,.simulation-wrap{border:1px solid rgba(255,255,255,.11);border-radius:8px;background:#171919c7;box-shadow:0 22px 60px #00000052;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.app-shell.light .top-bar,.app-shell.light .control-dock,.app-shell.light .learning-panel,.app-shell.light .info-card,.app-shell.light .simulation-wrap{border-color:#18221e1f;background:#ffffffd1;box-shadow:0 22px 60px #1f293721}.top-bar{display:grid;grid-template-columns:minmax(260px,1fr) auto auto;align-items:center;gap:16px;width:min(1720px,100%);min-height:82px;margin:0 auto 16px;padding:14px 16px}.brand{display:flex;align-items:center;gap:12px}.brand>svg{color:#2dd4bf;filter:drop-shadow(0 0 12px rgba(45,212,191,.42))}.brand h1{margin:0;font-size:clamp(1.35rem,2vw,2.1rem);letter-spacing:0}.brand p,.muted{margin:3px 0 0;color:#a7b2ad;font-size:.9rem}.app-shell.light .brand p,.app-shell.light .muted{color:#61706a}.mode-tabs{display:flex;gap:6px;padding:4px;border:1px solid rgba(255,255,255,.09);border-radius:8px;background:#ffffff0a}.app-shell.light .mode-tabs{border-color:#18221e1a;background:#18221e0a}.mode-tabs button,.icon-button,.toggle,.spawn-button,.builder-button,.builder-result,.preset,.lesson{border:1px solid transparent;color:#eef5f1;background:transparent;transition:transform .16s ease,border-color .16s ease,background .16s ease}.app-shell.light .mode-tabs button,.app-shell.light .icon-button,.app-shell.light .toggle,.app-shell.light .spawn-button,.app-shell.light .builder-button,.app-shell.light .builder-result,.app-shell.light .preset,.app-shell.light .lesson{color:#20302a}.mode-tabs button{min-height:38px;padding:0 12px;border-radius:7px;color:#aeb9b4;font-size:.87rem;font-weight:800;white-space:nowrap}.app-shell.light .mode-tabs button{color:#61706a}.mode-tabs button.active{color:#071412;background:#5eead4}.top-actions{display:flex;gap:8px}.icon-button{display:grid;width:42px;height:42px;place-items:center;border-color:#ffffff1a;border-radius:8px;background:#ffffff0d}.app-shell.light .icon-button{border-color:#18221e1a;background:#18221e0b}.icon-button:hover,.toggle:hover,.spawn-button:hover,.builder-button:hover,.builder-result:hover,.preset:hover,.lesson:hover{border-color:#5eead46b;transform:translateY(-1px)}.workspace{display:grid;grid-template-columns:minmax(0,1fr) minmax(350px,420px);gap:16px;width:min(1720px,100%);margin:0 auto}.left-column,.right-column{display:flex;flex-direction:column;gap:16px;min-width:0}.simulation-wrap{position:relative;height:clamp(520px,calc(100vh - 250px),760px);min-height:520px;overflow:hidden;overscroll-behavior:contain;touch-action:none}.simulation-canvas{display:block;width:100%;height:100%;cursor:grab}.simulation-canvas:active{cursor:grabbing}.molecule-3d-wrap{touch-action:none}.molecule-3d-canvas{cursor:grab}.canvas-readout{position:absolute;left:14px;bottom:14px;display:flex;flex-wrap:wrap;gap:8px}.canvas-readout span{display:inline-flex;align-items:center;gap:5px;padding:7px 10px;border:1px solid rgba(255,255,255,.1);border-radius:999px;color:#d7e2de;background:#0a0c0c9e;font-size:.78rem;font-weight:800}.empty-canvas-hint{position:absolute;left:50%;top:50%;display:grid;width:min(360px,calc(100% - 40px));gap:6px;padding:16px;border:1px solid rgba(94,234,212,.18);border-radius:8px;color:#d7e2de;background:#0a0c0c94;text-align:center;transform:translate(-50%,-50%);pointer-events:none;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.empty-canvas-hint strong{color:#f4f7f5;font-size:1rem}.empty-canvas-hint span{color:#a7b2ad;font-size:.88rem;line-height:1.45}.app-shell.light .canvas-readout span,.app-shell.light .zoom-controls,.app-shell.light .empty-canvas-hint{border-color:#18221e1f;color:#20302a;background:#ffffffb8}.app-shell.light .empty-canvas-hint strong{color:#18221e}.app-shell.light .empty-canvas-hint span{color:#61706a}.zoom-controls{position:absolute;top:14px;right:14px;display:flex;align-items:center;gap:6px;padding:6px;border:1px solid rgba(255,255,255,.1);border-radius:8px;background:#0a0c0ca8;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.zoom-controls button{display:grid;width:34px;height:34px;place-items:center;border:1px solid rgba(255,255,255,.1);border-radius:7px;color:#eef5f1;background:#ffffff0f;transition:transform .16s ease,border-color .16s ease,background .16s ease}.app-shell.light .zoom-controls button{border-color:#18221e1c;color:#20302a;background:#18221e0b}.zoom-controls button:hover{border-color:#5eead475;background:#5eead41f;transform:translateY(-1px)}.zoom-controls span{min-width:48px;color:#d7e2de;font-size:.78rem;font-weight:900;text-align:center}.app-shell.light .zoom-controls span{color:#20302a}.control-dock,.learning-panel,.info-card{padding:14px}.control-dock{display:grid;gap:10px}.dock-title,.section-heading{display:flex;align-items:center;gap:8px;margin-bottom:8px}.dock-title h2,.section-heading h2,.info-card h2{margin:0;font-size:1rem}.dock-title svg,.section-heading svg{color:#5eead4}.control-section{display:grid;gap:8px;padding:10px;border:1px solid rgba(255,255,255,.07);border-radius:8px;background:#ffffff07}.app-shell.light .control-section{border-color:#18221e14;background:#18221e06}.control-section-title{color:#a7b2ad;font-size:.72rem;font-weight:950;text-transform:uppercase}.app-shell.light .control-section-title{color:#61706a}.control-section-inline{display:flex;flex-wrap:wrap;align-items:center;gap:8px}.control-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:10px 14px}.compact-grid{grid-template-columns:repeat(auto-fit,minmax(154px,1fr))}.slider{display:grid;gap:5px;min-width:0}.slider span{display:flex;justify-content:space-between;gap:10px;color:#d6dfdb;font-size:.82rem;font-weight:800}.app-shell.light .slider span{color:#33443d}.slider strong{color:#5eead4}.slider input{width:100%;accent-color:#5eead4}.element-board,.visual-row,.projection-row,.toggle-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:0}.element-board{display:grid;grid-template-columns:repeat(auto-fit,minmax(112px,1fr));align-items:stretch;gap:8px}.element-group{min-width:0;padding:7px;border:1px solid rgba(255,255,255,.08);border-radius:8px;background:#ffffff09}.element-group-title{margin-bottom:7px;color:#a7b2ad;font-size:.72rem;font-weight:900}.element-picker{display:flex;flex-wrap:wrap;gap:5px}.element-picker button{min-width:35px;min-height:31px;border:1px solid rgba(255,255,255,.1);border-radius:8px;color:#f8fafc;background:#ffffff0a;font-weight:900}.spawn-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:0}.element-picker button.selected{border-color:color-mix(in srgb,var(--atom-color) 74%,white 12%);background:color-mix(in srgb,var(--atom-color) 28%,transparent);box-shadow:0 0 20px color-mix(in srgb,var(--atom-color) 26%,transparent)}.spawn-button,.builder-button,.visual-choice,.toggle{display:inline-flex;align-items:center;justify-content:center;min-height:36px;gap:7px;padding:0 12px;border:1px solid rgba(255,255,255,.1);border-radius:8px;background:#ffffff0d;font-size:.83rem;font-weight:850}.lighting-grid{grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}.color-slider{grid-template-columns:minmax(0,1fr) auto;align-items:center}.color-slider span{min-width:0}.color-slider input[type=color]{width:44px;height:30px;padding:2px;border:1px solid rgba(255,255,255,.14);border-radius:7px;background:#ffffff0f}.app-shell.light .color-slider input[type=color]{border-color:#18221e24;background:#18221e0b}.spawn-button.primary{color:#071412;border-color:transparent;background:#5eead4}.molecule-builder{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px;margin-bottom:10px}.builder-search{display:flex;align-items:center;gap:8px;min-width:0;min-height:40px;padding:0 11px;border:1px solid rgba(255,255,255,.1);border-radius:8px;color:#a7f3d0;background:#ffffff0b}.builder-search input{width:100%;min-width:0;border:0;outline:0;color:#eef5f1;background:transparent}.builder-search input::-moz-placeholder{color:#8c9a94}.builder-search input::placeholder{color:#8c9a94}.builder-button{color:#071412;border-color:transparent;background:#5eead4}.builder-message{grid-column:1 / -1;margin:-2px 0 0;color:#fbbf24;font-size:.8rem;font-weight:800}.builder-message.success{color:#99f6e4}.app-shell.light .builder-message.success{color:#047857}.builder-results{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin-bottom:10px}.builder-result{min-height:52px;padding:9px 10px;border-color:#5eead42e;border-radius:8px;text-align:left;background:#14b8a617}.builder-result.pubchem{border-color:#38bdf833;background:#38bdf814}.builder-result strong,.builder-result span{display:block}.builder-result strong{color:#f8fafc;font-size:.94rem;overflow-wrap:anywhere}.builder-result span{margin-top:2px;color:#a7b2ad;font-size:.76rem}.builder-result.active{border-color:#5eead49e;background:#14b8a62e}.builder-hint{grid-column:1 / -1;margin:0;color:#a7b2ad;font-size:.8rem;font-weight:800}.visual-row,.projection-row{align-items:center}.visual-choice{display:inline-flex;align-items:center;justify-content:center;min-height:38px;gap:7px;padding:0 12px;border:1px solid rgba(255,255,255,.1);border-radius:8px;color:#eef5f1;background:#ffffff0d;font-size:.83rem;font-weight:850;transition:transform .16s ease,border-color .16s ease,background .16s ease}.visual-choice:hover{border-color:#5eead46b;transform:translateY(-1px)}.visual-choice.active{color:#071412;border-color:transparent;background:#5eead4}.app-shell.light .visual-choice{border-color:#18221e1a;color:#20302a;background:#18221e0b}.app-shell.light .visual-choice.active{color:#06251f;background:#2dd4bf}.toggle.active{color:#071412;border-color:transparent;background:#a7f3d0}.app-shell.light .spawn-button,.app-shell.light .builder-search,.app-shell.light .builder-button,.app-shell.light .builder-result,.app-shell.light .toggle,.app-shell.light .element-picker button{border-color:#18221e1a;color:#20302a;background:#18221e0b}.app-shell.light .element-group{border-color:#18221e17;background:#18221e09}.app-shell.light .element-group-title{color:#61706a}.app-shell.light .element-picker button.selected{border-color:color-mix(in srgb,var(--atom-color) 72%,#18221e 12%);background:color-mix(in srgb,var(--atom-color) 22%,white);box-shadow:0 0 0 2px #18221e08}.app-shell.light .toggle.active{color:#06251f;background:#99f6e4}.app-shell.light .spawn-button.primary{color:#06251f;background:#2dd4bf}.app-shell.light .builder-search input{color:#20302a}.app-shell.light .builder-button{color:#06251f;background:#2dd4bf}.app-shell.light .builder-result{background:#14b8a614}.app-shell.light .builder-result.pubchem{background:#0ea5e914}.app-shell.light .builder-result strong{color:#18221e}.app-shell.light .builder-result span,.app-shell.light .builder-hint{color:#61706a}.preset-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.preset{min-height:64px;padding:10px;border-color:#ffffff17;border-radius:8px;text-align:left;background:#ffffff0b}.app-shell.light .preset,.app-shell.light .lesson{border-color:#18221e1a;background:#18221e0a}.preset strong{display:block;color:#f8fafc;font-size:1.1rem}.app-shell.light .preset strong,.app-shell.light .lesson span,.app-shell.light .event-list strong{color:#18221e}.preset span{color:#a7b2ad;font-size:.78rem}.app-shell.light .preset span,.app-shell.light .lesson strong,.app-shell.light .lesson-steps,.app-shell.light .plain-text,.app-shell.light .meter-block span,.app-shell.light .explanation p,.app-shell.light .event-list p,.app-shell.light .compact p,.app-shell.light .legend-grid span,.app-shell.light .empty-state,.app-shell.light .atom-title p{color:#61706a}.preset.active,.lesson.active{border-color:#5eead49e;background:#14b8a629}.lesson-list{display:grid;gap:8px}.lesson{position:relative;display:grid;grid-template-columns:1fr auto;align-items:center;gap:5px 8px;min-height:66px;padding:10px;border-color:#ffffff17;border-radius:8px;text-align:left;background:#ffffff0b}.lesson span,.lesson strong{grid-column:1}.lesson span{color:#f8fafc;font-weight:850}.lesson strong{color:#a7b2ad;font-size:.78rem}.lesson svg{grid-column:2;grid-row:1 / 3}.lesson-steps{margin:12px 0 0;padding-left:22px;color:#ccd7d2;font-size:.9rem;line-height:1.5}.lesson-steps li+li{margin-top:6px}.info-panel{display:flex;flex-direction:column;gap:16px}.primary-info{min-height:260px}.atom-title{display:flex;align-items:center;gap:12px;margin-bottom:14px}.atom-title>span{display:grid;width:56px;height:56px;place-items:center;border:1px solid color-mix(in srgb,var(--atom-color) 70%,white 12%);border-radius:50%;color:#f8fafc;background:color-mix(in srgb,var(--atom-color) 36%,#111316);box-shadow:0 0 24px color-mix(in srgb,var(--atom-color) 34%,transparent);font-size:1.35rem;font-weight:950}.atom-title h3{margin:0;font-size:1.3rem}.atom-title p{margin:3px 0 0;color:#a7b2ad}.fact-grid{display:grid;grid-template-columns:minmax(118px,.9fr) minmax(0,1fr);gap:8px 12px;margin:0 0 12px}.fact-grid dt{color:#99a7a1;font-size:.78rem}.app-shell.light .fact-grid dt{color:#66756f}.fact-grid dd{min-width:0;margin:0;color:#eef5f1;font-size:.86rem;font-weight:800;overflow-wrap:anywhere}.app-shell.light .fact-grid dd,.app-shell.light .explanation strong,.app-shell.light .meter-block strong{color:#20302a}.plain-text,.explanation p,.event-list p,.compact p{margin:0;color:#b7c3be;font-size:.9rem;line-height:1.55}.meter-block{display:grid;gap:8px;margin:0 0 12px;padding:10px;border:1px solid rgba(20,184,166,.16);border-radius:8px;background:#14b8a612}.meter-block>div:first-child{display:flex;align-items:center;justify-content:space-between;gap:10px}.meter-block span{color:#99a7a1;font-size:.78rem;font-weight:800}.meter-block strong{color:#dffcf5;font-size:.78rem}.meter{height:8px;overflow:hidden;border-radius:999px;background:#ffffff14}.meter i{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,#2dd4bf,#a7f3d0)}.meter-block.danger{border-color:#fb923c33;background:#fb923c14}.meter-block.danger i{background:linear-gradient(90deg,#22c55e,#f59e0b,#ef4444)}.app-shell.light .meter-block{border-color:#14b8a62e;background:#14b8a614}.app-shell.light .meter{background:#18221e17}.explanation{display:grid;gap:6px;padding:12px;border:1px solid rgba(94,234,212,.15);border-radius:8px;background:#14b8a612}.app-shell.light .explanation{border-color:#14b8a633;background:#14b8a614}.explanation strong{color:#eafff9;font-size:.83rem}.event-list,.composition-list{display:grid;gap:8px}.composition-list article{display:grid;gap:3px;padding:10px;border:1px solid rgba(255,255,255,.08);border-radius:8px;background:#ffffff0a}.composition-list strong{color:#f8fafc;font-size:1rem}.composition-list span,.composition-list p,.composition-total{margin:0;color:#b7c3be;font-size:.82rem;line-height:1.45}.composition-total{margin-top:10px;color:#99a7a1;font-weight:800}.event-list article{padding:10px;border:1px solid rgba(255,255,255,.08);border-radius:8px;background:#ffffff0a}.app-shell.light .event-list article{border-color:#18221e17;background:#18221e09}.app-shell.light .composition-list article{border-color:#18221e17;background:#18221e09}.app-shell.light .composition-list strong{color:#18221e}.app-shell.light .composition-list span,.app-shell.light .composition-list p,.app-shell.light .composition-total{color:#61706a}.event-list strong{display:block;margin-bottom:4px;color:#f8fafc;font-size:.86rem}.empty-state{display:grid;min-height:176px;place-items:center;color:#a7b2ad;text-align:center}.empty-state p{max-width:250px}.legend-grid{display:grid;grid-template-columns:1fr 1fr;gap:9px}.legend-grid span{display:flex;align-items:center;gap:8px;color:#b7c3be;font-size:.8rem;font-weight:800}.legend-grid i{width:12px;height:12px;border-radius:999px}.legend-electron{background:#a7f3d0;box-shadow:0 0 12px #a7f3d0}.legend-covalent{background:#e5e7eb}.legend-ionic{background:#f59e0b}.legend-polar{background:linear-gradient(90deg,#38bdf8,#fb7185)}.legend-metal{background:#67e8f9;box-shadow:0 0 12px #67e8f9}.legend-hbond{background:repeating-linear-gradient(90deg,#38bdf8 0 4px,transparent 4px 8px);border-radius:4px}.legend-shell{border:1px solid rgba(255,255,255,.5)}.app-shell.light .legend-shell{border-color:#18221e80}.compact{background:#fbbf2412}.compact h2{margin-bottom:8px}@media(max-width:1240px){.top-bar,.workspace{grid-template-columns:1fr}.mode-tabs,.top-actions{justify-self:start}.right-column{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr)}.info-panel{grid-column:span 1}}@media(max-width:860px){.app-shell{padding:10px}.mode-tabs{width:100%;overflow-x:auto}.control-grid,.right-column{grid-template-columns:1fr}.simulation-wrap{height:clamp(460px,62vh,620px);min-height:460px}.zoom-controls{top:10px;right:10px;gap:4px}.zoom-controls button{width:32px;height:32px}.builder-results,.preset-grid,.legend-grid{grid-template-columns:1fr}}